CN114622729B - Lifting method of special-shaped steel structure - Google Patents
Lifting method of special-shaped steel structure Download PDFInfo
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- CN114622729B CN114622729B CN202210347718.2A CN202210347718A CN114622729B CN 114622729 B CN114622729 B CN 114622729B CN 202210347718 A CN202210347718 A CN 202210347718A CN 114622729 B CN114622729 B CN 114622729B
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- shaped steel
- offset
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 135
- 239000010959 steel Substances 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 206010066054 Dysmorphism Diseases 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 14
- 238000009434 installation Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
- B66D1/74—Capstans
- B66D1/7442—Capstans having a horizontal rotation axis
- B66D1/7447—Capstans having a horizontal rotation axis driven by motor only
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
Abstract
The application provides a lifting method of a special-shaped steel structure, which comprises the following steps: setting a plurality of lifting points on the special-shaped steel structure; the sensor is arranged between the special-shaped steel structure and the ground; acquiring a first offset angle of a lifting point relative to a horizontal plane of the special-shaped steel structure through a sensor; calculating a first offset value of the lifting point relative to the horizontal plane through the first offset angle; comparing the first offset value with an offset threshold value; and adjusting the lifting speed of the lifting point according to the comparison result until the first offset value is smaller than the offset threshold value. In the lifting method of the special-shaped steel structure, the special-shaped steel structure is not easily influenced by external environment, the application range is wider, the horizontal detection precision of the whole special-shaped steel structure is effectively improved, and the lifting safety of the special-shaped steel structure is ensured; the process does not need to pause the lifting process of the special-shaped steel structure, so that the lifting efficiency of the special-shaped steel structure is effectively improved, the overall automation degree is high, and the lifting cost of the special-shaped steel structure is effectively reduced.
Description
Technical Field
The application relates to the technical field of special-shaped steel structures, in particular to a lifting method of a special-shaped steel structure.
Background
The special-shaped steel structure needs to ensure the whole level in the lifting process so as to improve the lifting safety and the high efficiency of the special-shaped steel structure, but the existing adopted special-shaped steel structure level detection method is easily influenced by external factors such as fields, weather and the like, so that the detection result is inaccurate, the levelness of the special-shaped steel structure in the lifting process is poor, the whole method is time-consuming and labor-consuming, the lifting efficiency of the special-shaped steel structure is reduced, and the lifting cost of the special-shaped steel structure is increased.
Disclosure of Invention
The present application aims to solve, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of the application is to provide a lifting method of a special-shaped steel structure.
In order to achieve the above object, the present application provides a method for lifting a profiled steel structure, the method comprising: setting a plurality of lifting points on the special-shaped steel structure; the sensor is arranged between the special-shaped steel structure and the ground; acquiring a first offset angle of the lifting point relative to the horizontal plane of the special-shaped steel structure through the sensor; calculating a first offset value of the lifting point relative to the horizontal plane through the first offset angle; comparing the first offset value with an offset threshold; and adjusting the lifting speed of the lifting point according to the comparison result until the first offset value is smaller than the offset threshold value.
Optionally, the disposing a sensor between the profiled steel structure and the ground comprises: lifting the special-shaped steel structure to a first height; arranging a transmitting end of a laser displacement sensor at one side of the special-shaped steel structure close to the ground; the receiving end of the laser displacement sensor is arranged on the ground, and the transmitting end is aligned with the receiving end.
Optionally, the laser displacement sensor is provided with a plurality of laser displacement sensors, and the transmitting end of at least one laser displacement sensor is arranged on the center point of the special-shaped steel structure.
Optionally, the acquiring, by the sensor, the first offset angle of the lifting point relative to the horizontal plane of the profiled steel structure includes: transmitting a laser signal to the receiving end through the transmitting end; acquiring a first distance between the transmitting end and the receiving end through the laser signal received by the receiving end; acquiring a second offset value of the transmitting end relative to the receiving end through the laser signal received by the receiving end; calculating a second offset angle of the transmitting end relative to the receiving end through the first distance and the second offset value; the first offset angle is obtained by the second offset angle.
Optionally, the calculating the second offset angle of the transmitting end relative to the receiving end through the first distance and the second offset value includes: calculating a ratio of the second offset value to the first distance; calculating an arctangent value of the ratio to obtain the second offset angle.
Optionally, the calculating the first offset value of the lifting point relative to the horizontal plane through the first offset angle includes: calculating a tangent value of the first offset angle; measuring a second distance from the lifting point to the transmitting end on the horizontal plane; the tangent value is multiplied by the second distance to obtain the first offset value.
Optionally, the lifting method further includes: setting the interval height; acquiring the relative height of the lifting points through a total station at intervals of height; comparing the relative heights of a plurality of said lifting points; and adjusting the heights of lifting points of the special-shaped steel structure according to the comparison result until the relative heights of a plurality of lifting points are the same.
Optionally, the lifting method further includes: lifting the special-shaped steel structure to a second height; acquiring the relative height of the lifting point through the total station; comparing the relative heights of a plurality of said lifting points; adjusting the heights of lifting points of the special-shaped steel structure according to the comparison result until the relative heights of a plurality of lifting points are the same; and lifting the special-shaped steel structure to a third height and installing the special-shaped steel structure.
Optionally, the acquiring the relative height of the lifting point by the total station includes: disposing a reflective sheet on the lifting point; acquiring the initial height of the lifting point through the total station; acquiring the actual height of the lifting point through the total station; and subtracting the initial height from the actual height to obtain the relative height of the lifting point.
Optionally, the special-shaped steel structure is lifted by a hydraulic system, and the lifting speed of the lifting point is adjusted by controlling the flow of the hydraulic system.
The technical scheme that this application provided can include following beneficial effect:
the sensor is used for acquiring the first offset value of the lifting point, so that the lifting point is not easily influenced by external environment, the application range is wider, the horizontal detection precision of the whole special-shaped steel structure is effectively improved, and the lifting safety of the special-shaped steel structure is ensured;
the lifting speed of the lifting point is adjusted through the comparison of the first offset value and the offset threshold value so as to keep the level of the special-shaped steel structure, the lifting process of the special-shaped steel structure is not required to be suspended in the process, the lifting efficiency of the special-shaped steel structure is effectively improved, the whole automation degree is high, and the lifting cost of the special-shaped steel structure is effectively reduced.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic flow chart of a method for lifting a profiled steel structure according to an embodiment of the present application;
FIG. 2 is a schematic view of a profiled steel structure according to an embodiment of the present application when tilted;
fig. 3 is a schematic structural diagram of a hydraulic system in a method for lifting a profiled steel structure according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a guide wheel in a lifting method of a profiled steel structure according to an embodiment of the present application;
as shown in the figure: 1. the special-shaped steel structure comprises 2, lifting points, 3, a transmitting end, 4, a receiving end, 5, a lifting frame, 6, a reel, 7, a steel wire rope, 8, a hydraulic motor, 9, a hydraulic station, 10, a regulating valve, 11, a guide ring, 12, a stand column, 13, a guide rod, 14, a wheel frame, 15, a guide wheel, 16 and a long bolt.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all alternatives, modifications, and equivalents as may be included within the spirit and scope of the appended claims.
In the related embodiment, when the special-shaped steel structure 1 detects the level, the lifting process needs to be suspended, the level condition of the special-shaped steel structure 1 is detected through the total station, and if the inclination condition occurs, the lifting point 2 of the special-shaped steel structure 1 needs to be manually adjusted until the special-shaped steel structure 1 reaches the level state.
The method of detecting the level by the total station is easily influenced by external environments such as sites, weather and the like, has small application range and low detection precision, and cannot ensure the lifting safety of the special-shaped steel structure 1;
meanwhile, the lifting process of the special-shaped steel structure 1 needs to be suspended when the horizontal detection is performed, and the longer the span of the special-shaped steel structure 1 is, the longer the detection time is, so that the lifting efficiency of the special-shaped steel structure 1 is lower;
in addition, the special-shaped steel structure 1 needs manual operation during adjustment, and is high in labor cost and low in adjustment efficiency.
As shown in fig. 1, an embodiment of the present application proposes a method for lifting a special-shaped steel structure 1, where the lifting method includes:
s1: a plurality of lifting points 2 are arranged on the special-shaped steel structure 1;
s2: the sensor is arranged between the special-shaped steel structure 1 and the ground;
s3: acquiring a first offset angle of the lifting point 2 relative to the horizontal plane of the special-shaped steel structure 1 through a sensor;
s4: calculating a first offset value of the lifting point 2 relative to the horizontal plane through a first offset angle;
s5: comparing the first offset value with an offset threshold value;
s6: and adjusting the lifting speed of the lifting point 2 according to the comparison result until the first offset value is smaller than the offset threshold value.
It can be understood that the sensor is used for obtaining the first offset value of the lifting point 2, so that the sensor is not easy to be influenced by external environment, the application range is wider, the horizontal detection precision of the whole special-shaped steel structure 1 is effectively improved, and the lifting safety of the special-shaped steel structure 1 is ensured;
the lifting speed of the lifting point 2 is adjusted through the comparison of the first offset value and the offset threshold value so as to keep the level of the special-shaped steel structure 1, the lifting process of the special-shaped steel structure 1 is not required to be suspended in the process, the lifting efficiency of the special-shaped steel structure 1 is effectively improved, the overall automation degree is high, and the lifting cost of the special-shaped steel structure 1 is effectively reduced.
It should be noted that, the plurality of lifting points 2 may be uniformly distributed around the profiled steel structure 1, and may also be uniformly distributed at two ends of the profiled steel structure 1.
In some embodiments, the offset threshold may be 0.05m.
As shown in fig. 2, in some embodiments, S2: the arrangement of the sensor between the profiled steel structure 1 and the ground comprises:
s21: lifting the special-shaped steel structure 1 to a first height;
s22: the transmitting end 3 of the laser displacement sensor is arranged at one side of the special-shaped steel structure 1 close to the ground;
s23: the receiving end 4 of the laser displacement sensor is placed on the ground and the transmitting end 3 is aligned with the receiving end 4.
It can be understood that the laser displacement sensor is used for detecting the first offset angle, so that the stability is higher, the influence of external environment is not easy to happen, and the horizontal detection precision of the whole special-shaped steel structure 1 is ensured;
through the setting of first height, be convenient for the setting of transmitting end 3 and receiving end 4, guarantee the installation of laser displacement sensor between dysmorphism steel construction 1 and ground.
It should be noted that the first height should be not less than 0.5m, for example: 0.5m, 0.6m, etc.;
the ground should be a solid structure, such as: concrete, steel plate, etc.
In some embodiments, the transmitting direction of the transmitting end 3 and the receiving direction of the receiving end 4 are both located in the vertical direction, and the alignment accuracy of the transmitting end 3 and the receiving end 4 is less than 0.001m.
In some embodiments, if the lifting height of the profiled steel structure 1 is high, a repeater may be disposed on the input path of the transmitting end 3 to ensure stable signal transmission.
In some embodiments, the laser displacement sensor is provided in plurality, and the emitting end 3 of at least one laser displacement sensor is provided on the center point of the profiled steel structure 1.
It can be understood that the detection of the first offset angle can be realized through the laser displacement sensor arranged on the center point of the special-shaped steel structure 1, so that the horizontal detection of the special-shaped steel structure 1 is ensured;
through the cooperation of a plurality of laser displacement sensors, can adapt to complicated, the great dysmorphism steel construction 1 of span of molding, guarantee wholly to the horizontal detection precision of dysmorphism steel construction 1.
In some embodiments, the emitting end 3 of one laser displacement sensor may be disposed at the center point of the profiled steel structure 1, and the emitting ends 3 of a plurality of laser displacement sensors may also be disposed.
In some embodiments, S3: acquiring a first offset angle of the lifting point 2 relative to the horizontal plane of the special-shaped steel structure 1 through a sensor comprises:
s31: transmitting a laser signal to a receiving end 4 through a transmitting end 3;
s32: acquiring a first distance between the transmitting end 3 and the receiving end 4 through the laser signal received by the receiving end 4;
s33: acquiring a second offset value of the transmitting end 3 relative to the receiving end 4 through the laser signal received by the receiving end 4;
s34: calculating a second offset angle of the transmitting end 3 relative to the receiving end 4 through the first distance and the second offset value;
s35: the first offset angle is obtained by the second offset angle.
It can be understood that, because the transmitting end 3 rotates synchronously with the profiled steel structure 1, the offset angle of the transmitting end 3 relative to the receiving end 4 is equal to the offset angle of the lifting point 2 relative to the horizontal plane, i.e. the second offset angle is equal to the first offset angle, so that the first offset angle is obtained after the second offset angle is obtained through the first distance and the second offset value.
It should be noted that, the horizontal plane of the special-shaped steel structure 1 refers to the horizontal plane of the transmitting end 3 on the special-shaped steel structure 1 in the lifting process; the first offset value refers to a distance value from the lifting point 2 to the horizontal plane of the special-shaped steel structure 1, and the first offset angle refers to an included angle between the special-shaped steel structure 1 and the horizontal plane of the special-shaped steel structure 1; the second offset value refers to a length value in a transmitting direction from the receiving end 4 to the transmitting end 3 along a direction perpendicular to the receiving direction of the receiving end 4; the second offset angle refers to the included angle between the receiving direction of the receiving end 4 and the transmitting direction of the transmitting end 3.
In some embodiments, S34: the calculating the second offset angle of the transmitting end 3 relative to the receiving end 4 by the first distance and the second offset value includes:
s341: calculating the ratio of the second offset value to the first distance;
s342: calculating the arctangent of the ratio results in a second offset angle.
It will be appreciated that, as shown in fig. 2, the first distance is a first right-angle side length in the right triangle, the second offset value is a second right-angle side length in the right triangle, and the second offset angle is an angle between a hypotenuse and the first right-angle side in the right triangle, so that the tangent value of the second offset angle is equal to the ratio of the second offset value to the first distance, and the second offset angle is obtained by arctangent the ratio of the second offset value to the first distance.
The second offset angle C 2 The tangent value of (a) is equal to the ratio of the second offset value B to the first distance H:
thus, the second offset angle C 2 The method comprises the following steps:
in some embodiments, S4: calculating a first offset value of the lifting point 2 from the horizontal plane by the first offset angle comprises:
s41: calculating a tangent value of the first offset angle;
s42: measuring a second distance from the lifting point 2 to the transmitting end 3 on the horizontal plane;
s43: the tangent value is multiplied by the second distance to obtain a first offset value.
It will be appreciated that, as shown in fig. 2, the second distance is the length of a first right-angle side in the right triangle, the first offset value is the length of a second right-angle side in the right triangle, and the first offset angle is the angle between the hypotenuse and the first right-angle side in the right triangle, so that the tangent value of the first offset angle is equal to the ratio of the first offset value to the second distance, and the first offset value is obtained by multiplying the tangent value by the second distance.
The first offset angle C 1 The tangent value of (a) is equal to the ratio of the first offset value A to the second distance L:
thus, the first offset angle C 1 The method comprises the following steps:
A＝LtanC 1 ；
due to C 1 Equal to C 2 Therefore, the method can be used for manufacturing the optical fiber,from this, a second offset value B can be derived as:
the maximum value of the second offset value B can be deduced from the offset threshold value, and therefore the lifting speed of the lifting point 2 can be controlled by judging the magnitude of the second offset value.
In some embodiments, the lifting method further comprises:
s7: setting the interval height;
s8: acquiring the relative height of the lifting points 2 through a total station at intervals of height;
s9: comparing the relative heights of the plurality of lifting points 2;
s10: and adjusting the heights of the lifting points 2 of the special-shaped steel structure 1 according to the comparison result until the relative heights of the lifting points 2 are the same.
It can be understood that by adding the horizontal detection method of the total station, the overall detection precision is higher, and the lifting reliability of the special-shaped steel structure 1 is effectively improved.
In some embodiments, the spacing height may be 20m.
In some embodiments, the lifting method further comprises:
s11: lifting the special-shaped steel structure 1 to a second height;
s12: acquiring the relative height of the lifting point 2 through a total station;
s13: comparing the relative heights of the plurality of lifting points 2;
s14: according to the comparison result, the height of the lifting points 2 of the special-shaped steel structure 1 is adjusted until the relative heights of the lifting points 2 are the same;
s15: and lifting the special-shaped steel structure 1 to a third height and installing the special-shaped steel structure 1.
It can be understood that the level of the special-shaped steel structure 1 is detected at the second height by the total station, so that stable installation of the special-shaped steel structure 1 after lifting is ensured, and the installation efficiency and the installation quality of the special-shaped steel structure 1 are effectively improved.
It should be noted that, the second height is smaller than the third height and larger than the first height, and meanwhile, the second height is close to the third height, and a specific value of the second height may be set according to actual needs, which is not limited herein.
In some embodiments, the acquiring the relative height of the lifting point 2 by the total station in S8 and S12 comprises:
s81: the reflector plate is arranged on the lifting point 2;
s82: acquiring the initial height of the lifting point 2 through a total station;
s83: acquiring the actual height of the lifting point 2 through a total station;
s84: the actual height is subtracted from the initial height to obtain the relative height of the lifting point 2.
It can be understood that the total station obtains the initial height and the actual height of the lifting points 2 through the reflecting sheet, so that the relative height of the lifting points 2 is obtained through calculation, and a plurality of lifting points 2 are conveniently adjusted, so that the relative heights of the lifting points 2 are the same.
In some embodiments, the profiled steel structure 1 is lifted by a hydraulic system and the lifting speed of the lifting point 2 is adjusted by controlling the flow of the hydraulic system.
It can be understood that the lifting speed of the lifting point 2 is adjusted by utilizing the flow control of the hydraulic system, so that the overlarge adjustment range of the lifting speed can be avoided, the stable speed regulation of the whole lifting process of the special-shaped steel structure 1 is ensured, and the operation is simple and convenient.
The hydraulic system may include the hydraulic motor 8 and may also include a hydraulic cylinder.
As shown in fig. 3, in some embodiments, the hydraulic system includes a lifting frame 5, a reel 6, a wire rope 7, a hydraulic motor 8 and a hydraulic station 9, the lifting frame 5 is disposed at a side portion of the installation position of the profiled steel structure 1, the reel 6 is rotatably disposed on the lifting frame 5, one end of the wire rope 7 is connected to the reel 6, the other end of the wire rope 7 is connected to the lifting point 2 of the profiled steel structure 1, the hydraulic motor 8 is disposed on the lifting frame 5, and an output end of the hydraulic motor 8 is connected to a rotating shaft of the reel 6, and an output end of the hydraulic station 9 is connected to an input end of the hydraulic motor 8.
It can be understood that the hydraulic station 9 transmits hydraulic oil to the hydraulic motor 8, and the output shaft of the hydraulic motor 8 rotates along with the hydraulic oil to drive the reel 6 to rotate, and the reel 6 rotates and winds the steel wire rope 7, so that the profiled steel structure 1 is lifted.
As shown in fig. 3, in some embodiments, an adjusting valve 10 is arranged between the hydraulic station 9 and the hydraulic motor 8, and the flow of hydraulic oil between the hydraulic station 9 and the hydraulic motor 8 is adjusted by the adjusting valve 10, so that the lifting speed of the lifting point 2 is adjusted.
In some embodiments, the end of the wire rope 7 remote from the reel 6 is provided with a hook which is snapped onto the lifting point 2 of the profiled steel structure 1.
As shown in fig. 3, in some embodiments, the lifting frame 5 is provided with a guide ring 11, and the wire rope 7 is connected to the lifting point 2 after passing through the guide ring 11.
It can be appreciated that the steel wire rope 7 is fixed to the lifting direction of the lifting point 2 through the arrangement of the guide ring 11, so that the deviation is avoided, and the first deviation value of the lifting point 2 is reduced while the lifting stability of the special-shaped steel structure 1 is improved.
As shown in fig. 4, in some embodiments, a column 12 is arranged at a side part of the installation position of the special-shaped steel structure 1, the column 12 is arranged on the ground, a guide rod 13 is arranged on the special-shaped steel structure 1 near the column 12, a wheel frame 14 is arranged on the guide rod 13, a guide wheel 15 is rotatably arranged on the wheel frame 14, and the guide wheel 15 is in rolling connection with the column 12.
It can be appreciated that the profiled steel structure 1 is more stable during lifting by the arrangement of the guide rods 13 and the guide wheels 15, and the first offset value of the lifting point 2 is further reduced.
In some embodiments, as shown in fig. 4, the wheel frames 14 are slidably disposed on the guide rods 13, two wheel frames 14 and guide wheels 15 are disposed, two wheel frames 14 are symmetrically disposed on two sides of the upright 12, and the two wheel frames 14 are connected by long bolts 16.
It can be understood that the two guide wheels 15 are clamped on the upright post 12, so that the connection between the guide rod 13 and the upright post 12 is more stable, the lifting stability of the special-shaped steel structure 1 is further improved, and the first offset value of the lifting point 2 is further reduced;
meanwhile, the distance between the two wheel frames 14 can be adjusted through the long bolts 16, so that the device is convenient to assemble and disassemble, can adapt to the upright posts 12 with different diameters, and is high in universality.
In some embodiments, the guide rod 13 is screwed with a connecting ball of the profiled steel structure 1.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (8)
1. The lifting method of the special-shaped steel structure is characterized by comprising the following steps of:
setting a plurality of lifting points on the special-shaped steel structure;
the sensor is arranged between the special-shaped steel structure and the ground;
acquiring a first offset angle of the lifting point relative to the horizontal plane of the special-shaped steel structure through the sensor;
calculating a first offset value of the lifting point relative to the horizontal plane through the first offset angle;
comparing the first offset value with an offset threshold;
adjusting the lifting speed of the lifting point according to the comparison result until the first offset value is smaller than the offset threshold value;
wherein, set up the sensor between dysmorphism steel construction and the ground includes: lifting the special-shaped steel structure to a first height; arranging a transmitting end of a laser displacement sensor at one side of the special-shaped steel structure close to the ground; setting a receiving end of the laser displacement sensor on the ground, and aligning the transmitting end with the receiving end;
the step of obtaining the first offset angle of the lifting point relative to the horizontal plane of the special-shaped steel structure through the sensor comprises the following steps: transmitting a laser signal to the receiving end through the transmitting end; acquiring a first distance between the transmitting end and the receiving end through the laser signal received by the receiving end; acquiring a second offset value of the transmitting end relative to the receiving end through the laser signal received by the receiving end; calculating a second offset angle of the transmitting end relative to the receiving end through the first distance and the second offset value; the first offset angle is obtained by the second offset angle.
2. The method for lifting a profiled steel structure according to claim 1, wherein a plurality of laser displacement sensors are provided, and the emitting end of at least one of the laser displacement sensors is disposed on the center point of the profiled steel structure.
3. The method for lifting a profiled steel structure according to claim 1, wherein calculating the second offset angle of the transmitting end relative to the receiving end by the first distance and the second offset value comprises:
calculating a ratio of the second offset value to the first distance;
calculating an arctangent value of the ratio to obtain the second offset angle.
4. The method of lifting a profiled steel structure according to claim 1, wherein calculating a first offset value of the lifting point from the horizontal plane by the first offset angle comprises:
calculating a tangent value of the first offset angle;
measuring a second distance from the lifting point to the transmitting end on the horizontal plane;
the tangent value is multiplied by the second distance to obtain the first offset value.
5. The method for lifting a profiled steel structure according to any one of claims 1 to 4, characterized in that the lifting method further comprises:
setting the interval height;
acquiring the relative height of the lifting points through a total station at intervals of height;
comparing the relative heights of a plurality of said lifting points;
and adjusting the heights of lifting points of the special-shaped steel structure according to the comparison result until the relative heights of a plurality of lifting points are the same.
6. The method of lifting a profiled steel structure according to claim 5, further comprising:
lifting the special-shaped steel structure to a second height;
acquiring the relative height of the lifting point through the total station;
comparing the relative heights of a plurality of said lifting points;
adjusting the heights of lifting points of the special-shaped steel structure according to the comparison result until the relative heights of a plurality of lifting points are the same;
and lifting the special-shaped steel structure to a third height and installing the special-shaped steel structure.
7. The method of lifting a profiled steel structure according to claim 6, wherein the obtaining the relative height of the lifting point by a total station comprises:
disposing a reflective sheet on the lifting point;
acquiring the initial height of the lifting point through the total station;
acquiring the actual height of the lifting point through the total station;
and subtracting the initial height from the actual height to obtain the relative height of the lifting point.
8. The method of lifting a profiled steel structure according to any one of claims 1 to 4, characterized in that the profiled steel structure is lifted by means of a hydraulic system and the lifting speed of the lifting point is adjusted by controlling the flow of the hydraulic system.
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