Device and method for locating the position of the secondary keel of a curved curtain wall

Abstract

The present invention discloses a device and method for locating the position of the secondary keel of a curved curtain wall. The device is provided with a fan-shaped positioning blade composed of a plurality of positioning blade units and having the same curvature as the curved curtain wall, an arc-shaped steel support guide rail having the same curvature as the fan-shaped positioning blade, a plurality of Y-direction telescopic rods, and a plurality of positioning blade telescopic rods in the center direction. The main connection point between the secondary keel and the back bolt is determined according to the curtain wall keel layout drawing. The X, Y, and Z dimensions are adjusted by the Y-direction telescopic rod, the positioning blade telescopic rod, and the fan-shaped positioning blade to determine the main connection point between the secondary keel and the back bolt and the position of the secondary connection point. The present invention accurately and quickly determines the position of the secondary keel, is easy to operate, has high precision, is easy to operate, is simple and flexible, is easy to construct, is convenient to fix, saves costs, ensures quality, has a wide range of uses, is simple in structure, and is easy to operate, greatly improving construction efficiency.

Description

Technical Field

[0001] The invention relates to the field of stone curtain wall installation, and in particular to a device and method for locating the position of a secondary keel of a curved curtain wall. Background Art

[0002] Traditional curved curtain wall installation holes are scattered and distributed in an arc. This requires determining spatial coordinate data during installation, making positioning complex. Curtain wall installation is performed at height, with limited operating space, making it extremely difficult to determine three-dimensional points using instruments. Furthermore, accurately locating the back bolt connection points on the secondary purlin is complex. Currently, curved curtain wall secondary purlin positioning uses disposable wooden molds or 3D instruments. Disposable wooden molds cannot be reused, and wooden molds cannot be accurately determined in three dimensions. They lack dimensional adjustment, requiring only marking and positioning by drawing lines on the wooden molds. Dimensioning errors are easily generated, and wooden molds are difficult to secure in space during installation. The installation is prone to movement, which can easily lead to installation errors and affect installation accuracy. Using 3D instruments for positioning prevents single-point spatial identification. Instead, the 3D instrument must be used to repeatedly lay out the points, first using the secondary purlin instrument and then using a total station to determine the positioning points on the secondary purlin. This requires repeated operations. Furthermore, secondary purlins are typically located in complex spatial locations with close spacing, making 3D positioning difficult and inefficient. Summary of the Invention

[0003] The object of the present invention is to overcome the deficiencies of the prior art and to provide a device and method for locating the position of the secondary keel of a curved curtain wall.

[0004] The technical solution provided by the present invention is as follows: a device for locating the position of the secondary keel of a curved curtain wall, characterized in that it includes a fan-shaped positioning blade consistent with the curvature of the curved curtain wall, an arc-shaped steel support guide rail consistent with the curvature of the fan-shaped positioning blade, a plurality of Y-direction telescopic rods, and a plurality of positioning blade telescopic rods in the center direction of the circle, the arc-shaped steel support guide rail is provided with an arc-shaped guide rail groove consistent with the curvature of the fan-shaped positioning blade, the lower end of each positioning blade unit is connected to a positioning blade telescopic rod through a button-type connector, the end of each positioning blade telescopic rod is connected to a Y-direction telescopic rod, and the other end of each Y-direction telescopic rod is respectively slidably connected to the arc-shaped steel support guide rail through the arc-shaped guide rail groove; the lower end of the arc-shaped steel support guide rail is connected to a magnetic control component, and the magnetic control component is used to connect to the main keel;

[0005] The fan-shaped positioning blade is composed of a number of positioning blade units, and there is a gap between the positioning blade units. Each positioning blade unit is provided with a conventional scale line of the positioning blade curtain wall, and each positioning blade unit is provided with four cross-shaped long positioning holes, and each cross-shaped long positioning hole is provided with a positioning hole adjustment control scale line; along the curvature direction of the fan-shaped positioning blade curve, the Y-direction telescopic rod slides in the arc-shaped guide rail groove, driving the positioning blade telescopic rod to move, and adjusting the stacking size of the positioning blade unit.

[0006] Furthermore, the positioning blade telescopic rod adopts aluminum alloy square tubes as inner and outer rods, and is provided with a locking hoop assembly to prevent the inner rod from falling off during telescopic adjustment.

[0007] Furthermore, the Y-direction telescopic rod includes two sets of threaded internal thread sleeves, external thread screws and ring nuts; the arc-shaped guide rail grooves provided on the arc-shaped steel support guide rails are two concentric through grooves; the Y-direction telescopic rod passes through the two concentric through grooves and is fixed by threading the external thread screw with the ring nut.

[0008] Furthermore, the positioning blade telescopic rod and the fan-shaped positioning blade are fixedly connected via a button-type connector.

[0009] A positioning method for a device for positioning a secondary keel of a curved curtain wall, characterized by comprising the following steps:

[0010] 1) Determine the center of the curved curtain wall to be installed according to the curtain wall keel layout drawing, and use the center of the circle as the O point of the Cartesian coordinate system;

[0011] 2) Determine the coordinates of the main connection points of each auxiliary keel and back bolt in the X, Y, and Z directions in the Cartesian coordinate system according to the curtain wall keel layout drawing:

[0012] The X coordinate of the main positioning point is the horizontal distance from the main connection point of the auxiliary keel and the back bolt to the Z axis. The Y coordinate of the main positioning point is the distance from the main connection point of the auxiliary keel and the back bolt to the curtain wall structure. The Z coordinate of the main positioning point is the horizontal distance from the main connection point of the auxiliary keel and the back bolt to the X axis.

[0013] The coordinates of the main connection point between the ith auxiliary keel and the back bolt are (X i , Y i , Z i ), the horizontal distance from the main connection point of the ith auxiliary keel and the back bolt to the Z axis is a i The distance between the main connection point of the i-th auxiliary keel and the back bolt and the curtain wall structure is b i The horizontal distance from the main connection point of the ith auxiliary keel and the back bolt to the X axis is c i , X i =a i , Y i =bi , Z i = c i According to the curtain wall keel layout drawing, the coordinates of the three directions of the main connection points of each auxiliary keel and back bolt are X1=a1, Y1=b1, Z1=c1; X2=a2, Y2=b2, Z2=c 2，…… And so on, where b1=b2= …… =b i ;

[0014] 3) First, draw the XOZ plane coordinate system on the ground. Place the device on the XOZ plane coordinate system on the ground, aligning the leftmost edge of the fan-shaped positioning blade with the X-axis.

[0015] In the XOZ plane coordinate system, mark the point on the ground according to X1=a1 and Z1=c1, which is the location of the main connection point between the first auxiliary keel and the back bolt:

[0016] By adjusting the telescopic rod of the positioning blade, the positioning blade unit is adjusted in the curved direction by sliding the telescopic rod in the Y direction, and the relative overlap of each positioning blade unit is adjusted so that the distance from the cross-shaped positioning hole in the upper left corner of the first positioning blade unit to the Z axis is a1, and the distance from the X axis is c1. The position of the cross-shaped positioning hole is the X and Z position of the main connection point between the first secondary keel and the back bolt. The positions of the other three cross-shaped positioning holes are the positions of the three secondary connection points of the first secondary keel and the back bolt. The connecting line of the upper and lower cross-shaped positioning holes is the position and direction of the secondary keel 11.

[0017] After determining the X and Z positions of the first auxiliary keel and the main connection point of the back bolt, determine the X and Z positions of the remaining i-th auxiliary keel and the main connection point of the back bolt in the same way. The distance between the cross-shaped positioning hole in the upper left corner of the i-th positioning blade unit and the Z axis is a. i , the distance from the X axis is c i The position of the cross-shaped positioning hole in the upper left corner of the i-th positioning blade unit is the position of the main connection point between the i-th auxiliary keel and the back bolt in the X and Z directions; at the same time, the positions of the other three auxiliary connection points between the i-th auxiliary keel and the back bolt are determined;

[0018] After the positions in the two directions are determined, the fan-shaped positioning blade is fixed by the button-type connector on the upper part of the fan-shaped positioning blade; the inner rod of the positioning blade telescopic rod is fixed by the locking hoop assembly;

[0019] 4) Based on Y1=b1, determine the Y-direction distance on the device, adjust the Y-direction telescopic rod in the device so that the length of the Y-direction telescopic rod is equal to b1, and tighten the ring nut;

[0020] 5) After completing the positioning of the secondary keels and back bolt main connection points and the secondary connection points on all curves, align the leftmost edge of the fan-shaped positioning blade of the device with the existing horizontal control line of the building wall where the curtain wall is to be installed; fix it to the main keel through the magnetic control part of the device to complete the entire positioning.

[0021] The beneficial effects of the present invention are as follows: the present invention is provided with a fan-shaped positioning blade composed of a number of positioning blade units, which is consistent with the curvature of the curved curtain wall, an arc-shaped steel support guide rail consistent with the curvature of the fan-shaped positioning blade, a number of Y-direction telescopic rods, and a number of positioning blade telescopic rods in the center direction. The main connection point of the secondary keel and the back bolt is determined according to the curtain wall keel layout drawing, and the three dimensions of X, Y, and Z are adjusted through the Y-direction telescopic rod, the positioning blade telescopic rod, and the fan-shaped positioning blade to determine the relative position in space, and then determine the main connection point of the secondary keel and the back bolt and the position of the secondary connection point. The fan-shaped positioning blade and the cross-shaped positioning hole thereon are provided with scale lines, which can not only accurately and quickly determine the installation position point of the secondary keel, but also have the characteristics of accurate position, easy operation, and high precision. At the same time, a Y-direction telescopic rod, a positioning blade telescopic rod, and a magnetic control component are provided to facilitate combination adjustment and fixation. This invention utilizes magnetic control elements to effectively solve the problem of rapid spatial fixation and installation. This not only facilitates fixation but also facilitates adjustment of fixation errors, improving accuracy. This eliminates the complexity and difficulty of adjusting precision and errors associated with traditional devices and main keel components using bolts or welding. The invention is easy to operate, simple and flexible, and offers convenient construction, fast fixation, cost savings, and guaranteed quality. It achieves positioning in three dimensions, with adjustable arc length, a wide range of applications, and a simple structure, easy operation, and significantly improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the side elevation structure of the present invention;

[0024] Figure 3 for Figure 1 Schematic diagram of installation positioning;

[0025] Figure 4 for Figure 2 Schematic diagram of installation positioning;

[0026] Figure 5 This is a schematic structural diagram of the positioning blade telescopic rod, Y-direction telescopic rod and steel support rail portion of the present invention;

[0027] Figure 6 This is a structural diagram of the positioning blade telescopic rod, magnetic control component and main keel part of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the positioning blade unit and the positioning blade telescopic rod part of the present invention.

[0029] Among them: 1- fan-shaped positioning blade, 2- positioning blade adjustment control scale line, 3- cross long positioning hole, 4- positioning hole adjustment control scale line, 5- button-type connector, 6- arc-shaped steel support rail, 7- arc-shaped guide rail groove, 8- Y-direction telescopic rod, 9- positioning blade telescopic rod, 10- magnetic control component, 11- secondary keel, 12- locking hoop assembly, 13- main keel. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0031] like Figure 1-Figure 7 As shown, a device for locating the position of the secondary purlin of a curved curtain wall includes a fan-shaped positioning blade 1 composed of several positioning blade units, which is consistent with the curvature of the curved curtain wall; an arc-shaped steel support rail 6, which is consistent with the curvature of the fan-shaped positioning blade 1; several Y-axis telescopic rods 8; and several positioning blade telescopic rods 9 in the center direction. The arc-shaped steel support rail 6 is provided with an arc-shaped guide rail groove 7, which is consistent with the curvature of the fan-shaped positioning blade 1. The lower end of each positioning blade unit is connected to a positioning blade telescopic rod 9 via a button-type connector 5. The end of each positioning blade telescopic rod 9 is connected to a Y-axis telescopic rod 8. The other end of each Y-axis telescopic rod 8 is slidably connected to the arc-shaped steel support rail 6 via the arc-shaped guide rail groove 7. The lower end of the arc-shaped steel support rail 6 is connected to a magnetic control member 10. When in use, the magnetic control member 10 is connected to the main purlin 13, so that the entire device can be quickly and conveniently fixed to the main purlin 13 of the curved curtain wall. The magnetic control component 10 can be flexibly arranged according to the different positions of the main keel, which is easy to adjust, effectively avoiding the overall fixing error of the device and ensuring the installation accuracy of the secondary keel. The magnetic component is reusable, easy to disassemble, and effectively prevents the device from falling off.

[0032] The fan-shaped positioning blade 1 is composed of a number of positioning blade units, with gaps between the positioning blade units. Each positioning blade unit is provided with a conventional scale line 2 for the positioning blade curtain wall, which is convenient for adjustment and use. Each positioning blade unit is provided with four cross-shaped long positioning holes 3, and each cross-shaped long positioning hole 3 is provided with a positioning hole adjustment control scale line 4. Along the arc direction of the fan-shaped positioning blade 1, the Y-shaped telescopic rod 8 slides in the arc guide groove 7, driving the positioning blade telescopic rod 9 to move, adjusting the stacking size of the positioning blade units, and then determining the arc length of the fan-shaped positioning blade 1, completing the adjustment of the fan-shaped positioning blade 1 in the curved direction. After the adjustment of the fan-shaped positioning blade 1 is completed, the position of the secondary keel is accurately determined by the positioning hole adjustment control scale line 4 on the cross-shaped long positioning hole 3.

[0033] The positioning blade telescopic rod 9 and the fan-shaped positioning blade 1 are fixedly connected via a button-type connector 5, which is easy to operate and adjust, and can effectively improve the installation and adjustment speed.

[0034] The positioning blade telescopic rod 9 utilizes aluminum alloy square tubes for its inner and outer members and features a locking clamp assembly 12, effectively preventing the inner member from falling out during telescopic adjustment. The outer member is 1000mm long, while the inner member is 2000mm long. Through telescopic adjustment, the positioning blade telescopic rod 9 can be used to position the secondary keel in an arc with a radius of 1000-3000mm. The arc and radius of the fan-shaped positioning blade 1 are adjusted by the telescopic movement of the positioning blade telescopic rod 9. The positioning blade telescopic rod 9 is equipped with graduated lines for determining the radius with millimeter accuracy.

[0035] The Y-direction telescopic rod 8 comprises two sets of threadedly connected inner thread sleeves, outer thread screws and ring nuts, and the length is adjusted according to the distance between the curtain wall and the wall surface.

[0036] The curved steel support rail 6 is constructed from an aluminum alloy square tube, with two concentric through-slots 7 formed within it. A Y-axis telescopic rod 8 passes through these two concentric through-slots and is secured by a ring nut threaded with an external screw. The Y-axis telescopic rod 8 moves within the curved guide rail 7. Once the rod is precisely sized, the ring nut is tightened to secure the Y-axis telescopic rod 8 to the curved steel support rail 6, preventing slippage during installation.

[0037] A method for locating the position of a secondary keel of a curved curtain wall, comprising the following steps:

[0038] 1) Determine the center of the curved curtain wall to be installed according to the curtain wall keel layout drawing, and use the center of the circle as the O point of the Cartesian coordinate system.

[0039] 2) According to the curtain wall keel layout drawing, determine the coordinates of the main connection points (i.e., main positioning points) of each secondary keel and back bolt in the X, Y, and Z directions in the Cartesian coordinate system.

[0040] The X coordinate of the main positioning point is the horizontal distance from the main connection point of the secondary keel and the back bolt to the Z axis. The Y coordinate of the main positioning point is the distance from the main connection point of the secondary keel and the back bolt to the curtain wall structure. The Z coordinate of the main positioning point is the horizontal distance from the main connection point of the secondary keel and the back bolt to the X axis.

[0041] The coordinates of the main connection point between the ith auxiliary keel and the back bolt are (X i , Y i , Z i ), the horizontal distance from the main connection point of the ith auxiliary keel and the back bolt to the Z axis is a i The distance between the main connection point of the i-th auxiliary keel and the back bolt and the curtain wall structure is b i The horizontal distance from the main connection point of the ith auxiliary keel and the back bolt to the X axis is c i, X i =a i , Y i =b i , Z i = c i According to the curtain wall keel layout drawing, the coordinates of the three directions of the main connection points of each auxiliary keel and back bolt are X1=a1, Y1=b1, Z1=c1; X2=a2, Y2=b2, Z2=c 2，…… And so on, where b1=b2= …… =b i .

[0042] 3) First, draw the XOZ plane coordinate system on the ground. Place the unfolded device on the XOZ plane coordinate system on the ground, and align the leftmost edge of the fan-shaped positioning blade with the X-axis.

[0043] Take the first secondary keel and back bolt main connection point as an example:

[0044] In the XOZ plane coordinate system, mark the point on the ground according to X1=a1 and Z1=c1, which is the location of the main connection point between the first auxiliary keel and the back bolt:

[0045] By adjusting the telescopic rod of the positioning blade, the positioning blade unit is adjusted in the curved direction by sliding the telescopic rod in the Y direction, and the relative overlap of each positioning blade unit is adjusted so that the distance from the cross-shaped positioning hole in the upper left corner of the first positioning blade unit to the Z axis is a1, and the distance from the X axis is c1. According to the curtain wall conventional scale lines and the scale lines of the cross-shaped holes set on the positioning blade, the accuracy is adjusted to the millimeter level. The position of the cross-shaped positioning hole is the X and Z direction position of the main connection point between the first secondary keel and the back bolt. The positions of the other three cross-shaped positioning holes on the first positioning blade unit are determined at the same time, that is, the positions of the three first secondary keels and the back bolt secondary connection points are determined. The connection line of the upper and lower cross-shaped positioning holes determines the position and direction of the secondary keel 11, that is, each positioning blade unit is provided with a secondary keel 11 along the direction of the connection line of the upper and lower cross-shaped positioning holes.

[0046] According to X1=a 1， Z1=c1 After determining the X and Z positions of the first positioning point, i.e., the first auxiliary keel and the main connection point of the back bolt, the X and Z positions of the remaining i-th auxiliary keel and the main connection point of the back bolt are determined by analogy. The distance between the cross-shaped positioning hole in the upper left corner of the i-th positioning blade unit and the Z axis is a. i , the distance from the X axis is c iThe position of the cross-shaped positioning hole in the upper left corner of the i-th positioning blade unit is the X and Z position of the main connection point between the i-th secondary keel and the back bolt. The positions of the other three secondary connection points of the i-th secondary keel and the back bolt are also determined.

[0047] After the positions in the two directions are determined, the fan-shaped positioning blade is fixed by the button-type connector on the upper part of the fan-shaped positioning blade. The inner rod of the positioning blade telescopic rod is fixed by the locking hoop assembly to prevent the inner rod from falling off.

[0048] 4) According to Y1=b 1， Determine the Y distance on the device and adjust the Y telescopic rod. Fine-tune the rod until its length equals b1, the distance between the primary and secondary connection points of all secondary keels and backbolts and the curtain wall structure. Once the dimensions are fixed, tighten the ring nut to secure the Y telescopic rod and curved guide rail, preventing slippage during installation.

[0049] 5) After locating the primary and secondary connection points of the secondary keels and backbolts on all curves using the above method, align the leftmost edge of the device's fan-shaped positioning blade with the existing horizontal control line on the building where the curtain wall will be installed. Secure the device's magnetic control element to the main keel to complete the spatial positioning.

[0050] It should be understood that any portion not elaborated in detail in this specification belongs to the prior art. The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made by ordinary engineers and technicians in this field to the technical solution of the present invention should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A device for locating the position of the secondary keel of a curved curtain wall, characterized in that It comprises a fan-shaped positioning blade (1) having a curvature consistent with the curvature of the curved curtain wall, an arc-shaped steel support guide rail (6) having a curvature consistent with the curvature of the fan-shaped positioning blade (1), a plurality of Y-direction telescopic rods (8), and a plurality of positioning blade telescopic rods (9) in the center direction. The arc-shaped steel support guide rail (6) is provided with an arc-shaped guide rail groove (7) having a curvature consistent with the curvature of the fan-shaped positioning blade (1). The lower end of each positioning blade unit is connected to a positioning blade telescopic rod (9) through a button-type connector (5). The end of each positioning blade telescopic rod (9) is connected to a Y-direction telescopic rod (8). The other end of each Y-direction telescopic rod (8) is slidably connected to the arc-shaped steel support guide rail (6) through the arc-shaped guide rail groove (7). The lower end of the arc-shaped steel support guide rail (6) is connected to a magnetic control component (10), and the magnetic control component (10) is used to connect to the main keel (13). The fan-shaped positioning blade (1) is composed of a plurality of positioning blade units, and there are gaps between the positioning blade units. Each positioning blade unit is provided with a positioning blade curtain wall conventional scale line (2), each positioning blade unit is provided with four cross-shaped long positioning holes (3), and each cross-shaped long positioning hole (3) is provided with a positioning hole adjustment control scale line (4); along the curvature direction of the fan-shaped positioning blade (1), the Y-direction telescopic rod (8) slides in the arc-shaped guide groove (7), driving the positioning blade telescopic rod (9) to move, thereby adjusting the stacking size of the positioning blade units.

2. The device for locating the secondary keel position of a curved curtain wall according to claim 1, characterized in that The positioning blade telescopic rod (9) uses aluminum alloy square tubes as inner and outer rods, and is provided with a locking hoop assembly (12) to prevent the inner rod from falling off during telescopic adjustment.

3. The device for locating the secondary keel position of a curved curtain wall according to claim 1, characterized in that The Y-direction telescopic rod (8) comprises two sets of threadedly connected inner thread sleeves, outer thread screws and ring nuts; the arc-shaped guide rail groove (7) provided on the arc-shaped steel support guide rail (6) is two concentric through grooves; the Y-direction telescopic rod (8) passes through the two concentric through grooves and is fixed by the outer thread screw threadedly connected to the ring nut.

4. The device for locating the position of the secondary keel of a curved curtain wall according to claim 1, characterized in that The positioning blade telescopic rod (9) and the fan-shaped positioning blade (1) are fixedly connected via a button-type connector (5).

5. A method for positioning the device for positioning the secondary keel of a curved curtain wall according to claim 1, characterized in that The specific steps include: 1) Determine the center of the curved curtain wall to be installed according to the curtain wall keel layout drawing, and use the center of the circle as the O point of the Cartesian coordinate system; 2) Determine the coordinates of the main connection points of each auxiliary keel and back bolt in the X, Y, and Z directions in the Cartesian coordinate system according to the curtain wall keel layout drawing: The X coordinate of the main positioning point is the horizontal distance from the main connection point of the auxiliary keel and the back bolt to the Z axis. The Y coordinate of the main positioning point is the distance from the main connection point of the auxiliary keel and the back bolt to the curtain wall structure. The Z coordinate of the main positioning point is the horizontal distance from the main connection point of the auxiliary keel and the back bolt to the X axis. The coordinates of the main connection point between the ith auxiliary keel and the back bolt are (X i , Y i , Z i ), the horizontal distance from the main connection point of the ith auxiliary keel and the back bolt to the Z axis is a i The distance between the main connection point of the ith auxiliary keel and the back bolt and the curtain wall structure is b i The horizontal distance from the main connection point of the ith auxiliary keel and the back bolt to the X axis is c i , X i =a i , Y i =b i , Z i = c i According to the curtain wall keel layout drawing, the coordinates of the three directions of the main connection points of each auxiliary keel and back bolt are X1=a1, Y1=b1, Z1=c1; X2=a2, Y2=b2, Z2=c 2，…… And so on, where b1=b2= …… =b i ; 3) First, draw the XOZ plane coordinate system on the ground. Place the device on the XOZ plane coordinate system on the ground, aligning the leftmost edge of the fan-shaped positioning blade with the X-axis. In the XOZ plane coordinate system, mark the point on the ground according to X1=a1 and Z1=c1, which is the location of the main connection point between the first auxiliary keel and the back bolt: By adjusting the telescopic rod of the positioning blade, the positioning blade unit is adjusted in the curved direction by sliding the telescopic rod in the Y direction, and the relative overlap amount of each positioning blade unit is adjusted so that the distance from the cross strip positioning hole in the upper left corner of the first positioning blade unit to the Z axis is a1, and the distance from the X axis is c1. The position of the cross strip positioning hole is the position of the first auxiliary keel and the main connection point of the back bolt in the X and Z directions. The positions of the other three cross strip positioning holes are the positions of the three first auxiliary keels and the back bolt auxiliary connection points. The connection line of the upper and lower cross strip positioning holes is the position and direction of the auxiliary keel (11); After determining the X and Z positions of the first auxiliary keel and the main connection point of the back bolt, determine the X and Z positions of the remaining i-th auxiliary keel and the main connection point of the back bolt in the same way. The distance between the cross-shaped positioning hole in the upper left corner of the i-th positioning blade unit and the Z axis is a. i , the distance from the X axis is c i The position of the cross-shaped positioning hole in the upper left corner of the i-th positioning blade unit is the position of the main connection point between the i-th auxiliary keel and the back bolt in the X and Z directions; at the same time, the positions of the other three auxiliary connection points between the i-th auxiliary keel and the back bolt are determined; After the positions in the two directions are determined, the fan-shaped positioning blade is fixed by the button-type connector on the upper part of the fan-shaped positioning blade; the inner rod of the positioning blade telescopic rod is fixed by the locking hoop assembly; 4) Based on Y1=b1, determine the Y-direction distance on the device, adjust the Y-direction telescopic rod in the device so that the length of the Y-direction telescopic rod is equal to b1, and tighten the ring nut; 5) After completing the positioning of the secondary keels and back bolt main connection points and the secondary connection points on all curves, align the leftmost edge of the fan-shaped positioning blade of the device with the existing horizontal control line of the building wall where the curtain wall is to be installed; fix it to the main keel through the magnetic control part of the device to complete the entire positioning.

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