Angle-adjustable curtain wall glass installation positioning aid

By designing an adjustable-angle curtain wall glass installation positioning auxiliary device, the problem of difficult angle and height adjustment in traditional installation was solved, achieving stable support and precise positioning of the glass, and improving construction efficiency and safety.

CN224495846UActive Publication Date: 2026-07-14河北建工雄安建设发展有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
河北建工雄安建设发展有限公司
Filing Date
2025-08-07
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional curtain wall glass installation suffers from difficulties in angle adjustment, inconvenience in height adjustment, and poor support stability, resulting in low installation accuracy, time-consuming and labor-intensive installation, and potential safety hazards.

Method used

An adjustable-angle curtain wall glass installation positioning auxiliary device is provided, including components such as a base, column, rotating shaft, dial and support rod. It can be easily moved by casters, the height adjustment mechanism can adapt to different installation heights, the support frame can stably fix the glass, and rubber pads can be used to prevent scratches.

Benefits of technology

It enables precise adjustment of the glass installation angle and height, improves installation accuracy and safety, simplifies the operation process, and enhances the versatility and service life of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses adjustable angle's curtain wall glass installation positioning auxiliary device relates to curtain wall glass installation technical field. This adjustable angle's curtain wall glass installation positioning auxiliary device, including base, the base upper surface is perpendicularly welded with two stands, be equipped with height adjusting mechanism on the stand, two lifting sleeve inboard rotatory connection has the rotating shaft, two lifting sleeve inboard rotatory connection has the rotating shaft, and one end fixedly connected with the dial of rotating shaft, and the dial is screw -threaded with locking bolt, and the lifting sleeve is along the stand and is fixed through the positioning pin, can adapt to the glass of different installation height, need not to replace the device to satisfy multiple construction scene, the versatility of reinforcing device, the cooperation of rotating shaft, dial and pointer, can intuitively and accurately adjust glass installation angle, satisfy the angle demand of different curtain wall design, solve the problem that angle is difficult to control in traditional installation, improve installation accuracy.
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Description

Technical Field

[0001] This utility model relates to the field of curtain wall glass installation technology, and in particular to an adjustable-angle curtain wall glass installation positioning auxiliary device. Background Technology

[0002] In the construction of building curtain walls, the installation and positioning of curtain wall glass is a critical step, and its accuracy directly affects the appearance quality and structural safety of the curtain wall. Traditional curtain wall glass installation mostly relies on manual labor with simple supports, which has many problems.

[0003] First, angle adjustment is difficult, making it hard to precisely control the tilt angle of the glass, resulting in an uneven surface on the curtain wall after installation, affecting aesthetics and sealing performance; second, height adjustment is inconvenient, as the installation height varies on different floors or in different locations, requiring frequent erection or adjustment of supports, which is time-consuming and labor-intensive; third, support stability is poor, as simple supports cannot stably fix the glass, making it prone to shaking, increasing construction safety hazards, and potentially causing collision damage to the glass edges.

[0004] As building curtain walls become more diversified and personalized, the requirements for glass installation angle and precision are becoming increasingly stringent. Traditional installation methods can no longer meet these needs. Although there are some positioning devices on the market, they suffer from problems such as complex structure, cumbersome operation, and limited adjustment range.

[0005] Therefore, developing an installation and positioning auxiliary device that can flexibly adjust the angle and height, stably support the glass, and is easy to operate has become an urgent need to improve the efficiency and quality of curtain wall construction. Utility Model Content

[0006] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an adjustable-angle curtain wall glass installation and positioning auxiliary device that can solve the above-mentioned problem.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable-angle curtain wall glass installation and positioning auxiliary device, including a base, a support leg fixedly connected to the bottom of the base, a caster wheel fixedly connected to the bottom of the support leg, two columns vertically welded to the upper surface of the base, and a horizontal connecting rod provided at the top of the two columns and welded and fixed.

[0008] The column is equipped with a height adjustment mechanism, including a lifting sleeve and a positioning pin. The column has a pin hole linearly opened along the height direction. The lifting sleeve has a through hole of the same diameter at the corresponding position. The positioning pin is inserted into the through hole and cooperates with the pin hole. The positioning pin is equipped with a pull ring.

[0009] The two lifting sleeves are rotatably connected to a rotating shaft, and a scale is fixedly connected to one end of the rotating shaft. A locking bolt is threaded onto the scale.

[0010] A transverse support rod is fixedly connected to the center of the rotating shaft. There are three transverse support rods, and longitudinal support rods are fixedly connected to one side of both ends of the transverse support rods.

[0011] The longitudinal support rod is made of aluminum alloy square tube, and a sliding groove is opened on the inner side along the length direction, and a slider is slidably connected in the sliding groove.

[0012] A threaded sleeve is fixedly connected to the slider, a threaded rod is threadedly connected to the threaded sleeve, a clamping plate is fixedly connected to the threaded rod, and a support plate is fixedly connected to the bottom of the bottom horizontal support rod.

[0013] Preferably, the caster wheel is equipped with a braking device, and the upright is a square steel pipe.

[0014] Preferably, the lifting sleeve is a square steel pipe, which is sleeved on the outside of the column and can slide up and down along the column.

[0015] Preferably, the dial is a circular steel plate with graduations engraved along its circumference, and a pointer is provided at the corresponding position of the column.

[0016] Preferably, the support plates are evenly distributed in four groups along the length of the transverse support rod.

[0017] Preferably, the pin holes on the column are evenly distributed along the height, and the diameter of the positioning pin is adapted to the inner diameter of the pin hole.

[0018] Preferably, the longitudinal support rods and the transverse support rods form a support frame, which is rectangular in shape.

[0019] Preferably, the clamping plate is fitted with a rubber pad, the support plate is an L-shaped steel plate, and the upper surface of the horizontal edge is fitted with an anti-slip rubber strip.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This adjustable-angle curtain wall glass installation positioning auxiliary device, through the cooperation of a rotating shaft, a dial, and a pointer, can intuitively and accurately adjust the glass installation angle to meet the angle requirements of different curtain wall designs, solve the problem of difficult angle control in traditional installation, and improve installation accuracy.

[0022] This adjustable-angle curtain wall glass installation and positioning auxiliary device, in its height adjustment mechanism, has a lifting sleeve that slides along the column and is fixed by a positioning pin, which can adapt to glass of different installation heights. It can meet various construction scenarios without replacing the device, thus enhancing the versatility of the device.

[0023] This adjustable-angle curtain wall glass installation positioning auxiliary device has a support frame consisting of a rectangular structure made up of horizontal and vertical support rods. Combined with the fixing method of "bottom support plate + two side clamping plates", it can stably support the glass, prevent the glass from shaking or tipping over during installation, and ensure construction safety. The rubber pads on the inside of the clamping plates and the anti-slip rubber strips on the support plates can avoid direct rigid contact between the glass and metal parts, prevent the glass surface from being scratched or broken, and protect the integrity of the glass. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the adjustable-angle curtain wall glass installation positioning auxiliary device of this utility model;

[0026] Figure 2 This is a schematic diagram of the adjustable-angle curtain wall glass installation positioning auxiliary device of this utility model;

[0027] Figure 3 This is a cross-sectional schematic diagram of the adjustable-angle curtain wall glass installation and positioning auxiliary device of this utility model;

[0028] Figure 4 This is a cross-sectional schematic diagram of the adjustable-angle curtain wall glass installation and positioning auxiliary device of this utility model.

[0029] Reference numerals: 1. Base; 2. Support leg; 3. Caster wheel; 4. Column; 5. Horizontal connecting rod; 6. Pin hole; 7. Lifting sleeve; 8. Positioning pin; 9. Pull ring; 10. Rotating shaft; 11. Dial; 12. Locking bolt; 13. Horizontal support rod; 14. Longitudinal support rod; 15. Slide groove; 16. Slider; 17. Threaded sleeve; 18. Threaded rod; 19. Clamping plate; 20. Support plate. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Please see Figure 1-4 This utility model provides a technical solution: an adjustable-angle curtain wall glass installation and positioning auxiliary device, including a base 1, a support leg 2 fixedly connected to the bottom of the base 1, a caster wheel 3 fixedly connected to the bottom of the support leg 2, the caster wheel 3 having a braking device, which can move flexibly when pushed, and can be fixed by stepping on the brake after positioning, which is convenient for adjusting the position on the construction site. Two columns 4 are vertically welded on the upper surface of the base 1. The columns 4 are square steel pipes, and the top of the two columns 4 are provided with a horizontal connecting rod 5 welded and fixed to enhance the overall stability.

[0035] The column 4 is equipped with a height adjustment mechanism, including a lifting sleeve 7 and a positioning pin 8. The lifting sleeve 7 is a square steel tube that is sleeved on the outside of the column 4 and can slide up and down along the column 4. The column 4 has a pin hole 6 linearly opened along the height direction. The lifting sleeve 7 has a through hole of the same diameter at the corresponding position. The positioning pin 8 is inserted and a pull ring 9 is provided on the positioning pin 8 to fix the height of the lifting sleeve 7, which can adapt to glass with different installation heights.

[0036] Two lifting sleeves 7 are rotatably connected to a rotating shaft 10. One end of the rotating shaft 10 is fixedly connected to a dial 11. A locking bolt 12 is threaded onto the dial 11. The dial 11 is a circular steel plate with graduations engraved along its circumference. A pointer is provided at the corresponding position on the column 4 to visually display the rotation angle. Rotating the locking bolt 12 can press the lifting sleeve 7 to fix the angle of the rotating shaft 10.

[0037] A horizontal support rod 13 is fixedly connected to the center of the rotating shaft 10. Three horizontal support rods 13 are provided. A longitudinal support rod 14 is fixedly connected to one side of both ends of the horizontal support rod 13. The longitudinal support rod 14 and the horizontal support rod 13 form a support frame. The whole frame is rectangular. The longitudinal support rod 14 is made of aluminum alloy square tube. A sliding groove 15 is opened on the inner side along the length direction. A slider 16 is slidably connected in the sliding groove 15. A threaded sleeve 17 is fixedly connected to the slider 16. A threaded rod 18 is threadedly connected to the threaded sleeve 17. A clamping plate 19 is fixedly connected to the threaded rod 18. A rubber pad is glued to the clamping plate 19.

[0038] The bottom horizontal support rod 13 is fixedly connected to a support plate 20. The support plate 20 is an L-shaped steel plate with anti-slip rubber strips pasted on the upper surface of the horizontal edge to support the bottom of the glass. It forms a three-point support with the clamping assembly. There are four sets of support plates 20 evenly distributed along the length of the horizontal support rod 13.

[0039] Working principle: When this adjustable-angle curtain wall glass installation positioning auxiliary device is working, first push the device according to the construction requirements, and use the universal wheels 3 on the bottom support legs 2 of the base 1 to move to the installation position, and step on the brake device of the universal wheels 3 to fix the device; then, according to the installation height of the curtain wall glass, adjust the position of the lifting sleeve 7 on the column 4: pull out the positioning pin 8, slide the lifting sleeve 7 up and down along the column 4, and when the appropriate height is reached, align the through hole of the lifting sleeve 7 with the corresponding pin hole 6 on the column 4, insert the positioning pin 8 with the pull ring 9, and complete the height fixation;

[0040] Next, the curtain wall glass is placed on the support frame. The bottom of the glass is supported by the L-shaped support plate 20 on the bottom horizontal support rod 13. The anti-slip rubber strip of the support plate 20 increases friction to prevent the glass from sliding. The slider 16 in the inner groove 15 of the sliding longitudinal support rod 14 is slidable. The position of the clamping plate 19 is adjusted according to the width of the glass. The threaded rod 18 is rotated, and the clamping plate 19 is driven to move closer to the glass through the threaded sleeve 17 until the rubber pad on the inner side of the clamping plate 19 is in close contact with the side of the glass, thereby clamping and fixing the glass on both sides, forming a stable support of "bottom support + side clamping".

[0041] According to the installation angle designed for the curtain wall, loosen the locking bolts 12 on the dial 11, rotate the rotating shaft 10, and precisely adjust the angle of the support frame by matching the scale on the dial 11 with the pointer at the corresponding position of the column 4; after reaching the required angle, tighten the locking bolts 12 to press the lifting sleeve 7, fix the angle of the rotating shaft 10, and ensure that the glass is kept at the set angle; at this time, the construction personnel can install and fix the glass. After the installation is completed, reverse the operation to loosen the clamping plate 19, remove the glass, and complete one installation and positioning operation;

[0042] By using the rotating shaft 10, the scale 11 and the pointer, the glass installation angle can be adjusted intuitively and precisely to meet the angle requirements of different curtain wall designs, solve the problem of difficult angle control in traditional installation, and improve installation accuracy.

[0043] In the height adjustment mechanism, the lifting sleeve 7 slides along the column 4 and is fixed by the positioning pin 8, which can adapt to glass of different installation heights and meet various construction scenarios without replacing the device, thus enhancing the versatility of the device;

[0044] The support frame consists of a rectangular structure formed by horizontal support rods 13 and longitudinal support rods 14. Combined with the fixing method of "bottom support plate 20 + two side clamping plates 19", it can stably support the glass, prevent the glass from shaking or tipping over during installation, and ensure construction safety.

[0045] The 3 casters are equipped with brakes for easy movement and fixation of the device; height and angle adjustments are achieved through simple operations such as inserting and removing positioning pins and rotating bolts; the glass clamping is driven by a threaded rod 18, which is labor-saving, greatly shortens positioning time, and improves construction efficiency.

[0046] The rubber pads on the inside of the clamping plate 19 and the anti-slip rubber strips on the support plate 20 can prevent the glass from directly and rigidly contacting the metal parts, prevent the glass surface from being scratched or broken, and protect the integrity of the glass.

[0047] The column 4 is made of square steel pipe, and the horizontal connecting rod 5 enhances the overall stability. All components are fixed by welding, threaded connection and other methods. The structure has high strength and can withstand the weight of the glass and external forces during construction, and has a long service life.

[0048] Structural Description:

[0049] Base 1: The basic structure of the device. Two columns 4 are vertically welded to the upper surface to support the upper structure of the entire device, providing stable bottom support and ensuring the stability of the overall structure's center of gravity.

[0050] Support leg 2: It is fixedly connected to the bottom of the base 1, and its lower end is connected to the caster wheel 3. It supports the base 1 and raises its height so that the caster wheel 3 can contact the ground and enable the device to move. At the same time, through the connection with the base 1 and the caster wheel 3, a force transmission path of "base-support leg-caster wheel" is formed to distribute the weight of the device.

[0051] Casters 3: Fixed to the bottom of support legs 2, equipped with a braking device, the device can be moved flexibly through rolling characteristics, making it easy to adjust the position on the construction site; the braking device can lock the wheels after positioning to prevent the device from slipping and ensure stability during construction.

[0052] Column 4: Made of square steel pipe, vertically welded to the upper surface of base 1, with two symmetrically arranged columns, serving as the vertical support structure of the device, bearing the weight of lifting sleeve 7 and upper support frame; the cross-sectional characteristics of square steel pipe can enhance bending resistance and ensure the strength and stability of the vertical structure.

[0053] Horizontal connecting rod 5: welded and fixed to the top of the two columns 4, connecting the two columns 4 to form a "portal" frame structure, enhancing the lateral stability of the columns 4, preventing the columns 4 from tilting to both sides when under force, and improving the rigidity of the overall structure.

[0054] Pin hole 6: It is linearly opened along the height direction of column 4 and has the same diameter as the through hole of lifting sleeve 7. It provides an insertion position for positioning pin 8. By cooperating with the through hole of lifting sleeve 7, the lifting sleeve 7 can be fixed at different heights to meet the adjustment needs of different glass installation heights.

[0055] Lifting sleeve 7: A square steel tube that fits around the outside of the column 4 and can slide up and down along the column. It has a through hole at the position corresponding to the pin hole 6. The height can be adjusted by sliding along the column 4, which drives the upper rotating shaft 10 and the support frame to rise and fall synchronously, adapting to glass installation at different heights. The square steel tube cooperates with the column 4 to prevent rotation during sliding and ensure adjustment stability.

[0056] Positioning pin 8: Inserted into the through hole of pin hole 6 and lifting sleeve 7, with pull ring 9. By inserting it into the through hole and pin hole 6, the relative position of lifting sleeve 7 and column 4 is locked, and the height of the support frame is fixed. Pull ring 9 facilitates insertion and removal operation and improves adjustment efficiency.

[0057] Pull ring 9: Fixed to the positioning pin 8, providing a gripping point for the positioning pin 8, making it easy for construction personnel to quickly insert and remove the positioning pin 8, simplifying the height adjustment operation process.

[0058] Rotating shaft 10: Rotatably connected to the inside of the two lifting sleeves 7, with a scale 11 fixed at one end and a horizontal support rod 13 fixed in the center, serving as the rotation center of the support frame. By rotating, the horizontal support rod 13 and the glass rotate synchronously, thereby adjusting the glass installation angle; the rotating connection design ensures the flexibility of angle adjustment.

[0059] Dial 11: A circular steel plate fixed to one end of the rotating shaft 10. The dial is engraved with graduations along the circumference. It is used in conjunction with the pointer at the corresponding position of the column 4. Through the cooperation of the graduations and the pointer, the rotation angle of the rotating shaft 10 is displayed intuitively, making the adjustment of the glass installation angle more precise and solving the problem of difficult angle control in traditional installation.

[0060] Locking bolt 12: Threaded onto the dial 11, when tightened it presses against the lifting sleeve 7, locking the position of the rotating shaft 10 through friction, ensuring the glass angle is fixed and preventing angle deviation during construction.

[0061] Horizontal support rods 13: There are 3 in total, fixed in the center of the rotating shaft 10 and connected to the longitudinal support rods 14 to form the horizontal skeleton of the support frame and bear the weight of the glass; the 3 rods are set to enhance the horizontal support strength and prevent the frame from deforming.

[0062] Longitudinal support rod 14: aluminum alloy square tube, fixed to one side of both ends of the transverse support rod 13, forming a rectangular support frame with the transverse support rod 13. A sliding groove 15 is provided on the inner side along the length direction, which cooperates with the transverse support rod 13 to form a rectangular stable structure and improve the overall rigidity of the support frame. The aluminum alloy square tube is lightweight and has sufficient strength. The sliding groove 15 provides a sliding track for the slider 16.

[0063] Slide 15: It is opened inside the longitudinal support rod 14 and extends along the length direction to provide a sliding path for the slider 16, so that the slider 16 drives the clamping plate 19 to move longitudinally to adapt to the clamping requirements of glass of different widths.

[0064] Slider 16: Slidably connected in the slide groove 15, with a fixed threaded sleeve 17 on top. It slides along the slide groove 15, driving the threaded sleeve 17 and clamping plate 19 to adjust their lateral position, ensuring that the clamping plate 19 can contact the glass side of different widths.

[0065] Threaded sleeve 17: Fixed on slider 16 and threadedly connected to threaded rod 18. Through the threaded engagement with threaded rod 18, the rotational motion of threaded rod 18 is converted into the linear motion of clamping plate 19, so as to realize the clamping plate moving closer or further away.

[0066] Threaded rod 18: threadedly connected to threaded sleeve 17, with clamping plate 19 fixed at one end. When rotated, it drives clamping plate 19 to move laterally. Through threaded transmission, it achieves labor-saving operation and facilitates construction personnel to quickly clamp or release the glass.

[0067] Clamping plate 19: Fixed to the threaded rod 18, with a rubber pad adhered to the inside. Driven by the threaded rod 18, it contacts the side of the glass to achieve clamping and fixing of both sides of the glass. The rubber pad prevents the glass from direct contact with the metal and prevents the glass surface from being scratched or broken.

[0068] Support plate 20: L-shaped steel plate, fixed to the bottom of the bottom horizontal support rod 13, with anti-slip rubber strips pasted on the upper surface of the horizontal edge, and 4 sets evenly distributed along the length of the horizontal support rod 13 to support the bottom of the glass. Together with the clamping plates 19 on both sides, it forms a three-point support structure of "bottom support + side clamping" to prevent the glass from shaking or tipping over. The anti-slip rubber strips increase friction and prevent the glass from sliding. The distribution of 4 sets can adapt to the bottom support needs of glass of different widths.

[0069] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An adjustable-angle curtain wall glass installation and positioning auxiliary device, including a base (1), characterized in that: The base (1) is fixedly connected to a support leg (2), and the support leg (2) is fixedly connected to a caster wheel (3). Two columns (4) are vertically welded to the upper surface of the base (1), and a horizontal connecting rod (5) is provided at the top of the two columns (4) and welded and fixed. The column (4) is provided with a height adjustment mechanism, including a lifting sleeve (7) and a positioning pin (8). The column (4) is provided with a pin hole (6) in a linear manner along the height direction. The lifting sleeve (7) is provided with a through hole of the same diameter at the corresponding position. The positioning pin (8) is inserted into the through hole and cooperates with the pin hole (6). A pull ring (9) is provided on the positioning pin (8). The two lifting sleeves (7) are rotatably connected to a rotating shaft (10) on their inner sides. A dial (11) is fixedly connected to one end of the rotating shaft (10), and a locking bolt (12) is threaded onto the dial (11).

2. The adjustable-angle curtain wall glass installation and positioning auxiliary device according to claim 1, characterized in that: The rotating shaft (10) is fixedly connected to a transverse support rod (13) in the center. There are three transverse support rods (13), and longitudinal support rods (14) are fixedly connected to one side of both ends of the transverse support rods (13).

3. The adjustable-angle curtain wall glass installation positioning auxiliary device according to claim 2, characterized in that: The longitudinal support rod (14) is made of aluminum alloy square tube, and a groove (15) is provided on the inner side along the length direction. A slider (16) is slidably connected in the groove (15).

4. The adjustable-angle curtain wall glass installation and positioning auxiliary device according to claim 3, characterized in that: A threaded sleeve (17) is fixedly connected to the slider (16), a threaded rod (18) is threadedly connected to the threaded sleeve (17), a clamping plate (19) is fixedly connected to the threaded rod (18), and a support plate (20) is fixedly connected to the bottom of the bottom horizontal support rod (13).

5. The adjustable-angle curtain wall glass installation positioning auxiliary device according to claim 4, characterized in that: The support plate (20) is evenly distributed in four groups along the length of the transverse support rod (13); The dial (11) is a circular steel plate with graduations engraved along the circumference, and the corresponding position of the column (4) is provided with a pointer.

6. The adjustable-angle curtain wall glass installation positioning auxiliary device according to claim 5, characterized in that: The pin holes (6) on the column (4) are evenly distributed along the height, and the diameter of the positioning pin (8) is matched with the inner diameter of the pin hole (6).

7. The adjustable-angle curtain wall glass installation positioning auxiliary device according to claim 6, characterized in that: The longitudinal support rod (14) and the transverse support rod (13) constitute a support frame, which is rectangular in shape.