Building curtain wall wind resistance detection device

Abstract

The application relates to the field of building curtain wall detection, in particular to a building curtain wall wind resistance detection device, which comprises a detection mechanism and a wind supply mechanism. The detection mechanism comprises an operation table, the operation table is provided with a first end face, a plurality of clamping assemblies for clamping curtain wall panels are fixedly installed on the first end face, each clamping assembly comprises two clamping plates for clamping the curtain wall panels and a clamping cylinder for driving the two clamping plates to slide towards or away from each other, a pressure sensor for monitoring the pressure between the curtain wall panels and the clamping plates is fixedly arranged on the end face of the side close to the other clamping plate, a driving assembly for driving the clamping assembly to move towards or away from the first end face is arranged on the operation table, the pressure sensor is used to reflect the pressure borne by the curtain wall panels when the curtain wall panels bear the wind pressure, so as to reflect the pressure required to be borne by the supporting structure connected with the curtain wall panels, the wind pressure resistance of the curtain wall panels is not only detected, the wind pressure resistance of the curtain wall panels is detected from the strength of the supporting structure, and the accuracy of the detection result is improved.

Description

Technical Field

[0001] This application relates to the field of building curtain wall testing, and in particular to a device for testing the wind resistance of building curtain walls. Background Technology

[0002] Building curtain walls generally refer to the non-load-bearing exterior wall cladding of buildings. They are usually composed of panels (glass, metal panels, stone panels, ceramic panels, etc.) and the supporting structure behind them (aluminum beams and columns, steel structures, glass ribs, etc.). They are widely used in ordinary buildings and high-rise buildings. Therefore, the wind pressure resistance performance of building curtain walls needs to meet the requirements of high-rise buildings to prevent falling objects from heights. Thus, the wind pressure resistance performance of building curtain walls needs to be tested before installation.

[0003] Existing testing devices generally test the wind pressure resistance of building curtain wall panels before they break, resulting in a single testing dimension and poor accuracy in the wind pressure resistance test results. Summary of the Invention

[0004] To address the issue of poor accuracy in testing results due to a single testing dimension, this application provides a device for testing the wind resistance of building curtain walls.

[0005] The wind resistance testing device for building curtain walls provided in this application adopts the following technical solution:

[0006] A wind resistance testing device for building curtain walls is provided to test the wind pressure resistance performance of curtain wall panels. The device includes a testing mechanism for installing curtain wall panels and an air supply mechanism for blowing air onto the curtain wall panels. The testing mechanism includes an operating table with a first end face. Several sets of clamping components for clamping the curtain wall panels are fixedly installed on the first end face. Each clamping component includes two clamping plates for clamping the curtain wall panels and a clamping cylinder for driving the two clamping plates to slide closer or further away from each other. A pressure sensor for monitoring the pressure between the curtain wall panels and the clamping plates is fixedly provided on the end face of the clamping plates that are closer to each other. A driving component for moving the clamping components closer or further away from the first end face is provided on the operating table.

[0007] By adopting the above technical solution, pressure sensors are installed on the clamping plate, and air is blown onto the curtain wall panel through the air supply mechanism to simulate wind pressure. This makes the squeezing force between the curtain wall panel and the clamping plate simulate the force borne by the supporting structure. The pressure sensor provides numerical feedback of the force, and the wind pressure resistance performance of the building curtain wall is tested from the perspective of the connection strength of the supporting structure. This not only tests the performance of the curtain wall panel itself, but also improves the accuracy of the test results.

[0008] Further preferably, the air supply mechanism includes a fan, a power supply box for driving the fan to rotate, a mounting platform for mounting the power supply box, a lifting machine fixed on the mounting platform, and a base mounted on the side of the lifting machine away from the mounting platform.

[0009] By adopting the above technical solution, the installation platform, power supply box, and fan are driven to move up and down under the action of the jacking machine. This can change the position of the fan blowing towards the curtain wall panel. When the fan blows air between the curtain wall panel and the first end face, the air velocity between the curtain wall panel and the first end face is high and the air pressure is low. At this time, the wind pressure borne by the curtain wall panel is towards the first end face. When the fan blows air towards the side of the curtain wall panel away from the first end face, the air velocity on the side of the curtain wall panel away from the first end face is high and the air pressure is low. At this time, the wind pressure borne by the curtain wall panel is away from the first end face. This allows for the testing of the wind pressure resistance performance of the curtain wall panel under various wind conditions.

[0010] Further preferably, the first end face is a plane.

[0011] By adopting the above technical solution, the first end face is set as a plane, which reduces the impact of the first end face on wind force, thereby reducing the impact of the first end face on the accuracy of the wind pressure resistance performance test results of the curtain wall panel.

[0012] Further preferably, the first end face is a convex surface, a concave surface, or a corrugated surface.

[0013] By adopting the above technical solution, the first end face is set as a non-planar surface such as a convex, concave, or corrugated surface. This can be used to detect the influence of different first end faces on the wind pressure resistance of the curtain wall panel under the same wind pressure. Thus, the strength of the curtain wall panel and the supporting structure can be increased accordingly based on the building's exterior wall surface during actual installation. For example, under the same wind pressure, when the first end face is concave, the pressure detected by the pressure sensor is less than when the first end face is convex. That is, when the first end face is convex, the load borne by the supporting structure on the curtain wall panel is relatively larger under the same wind pressure. Therefore, if the building's exterior wall surface is convex during actual installation, the strength of the curtain wall panel and the supporting structure need to be appropriately increased to ensure safety.

[0014] Further preferably, the clamping assembly also includes a mounting block for fixing the clamping cylinder, and a lifting rod fixedly connected to the mounting block, the lifting rod being connected to the output end of the drive assembly.

[0015] By adopting the above technical solution and setting up a lifting rod connecting installation block, the clamping component can be driven by the driving component to move closer to or further away from the first end face, thereby adjusting the distance between the curtain wall panel and the first end face, and the wind pressure resistance performance of the curtain wall panel under different installation distances from the first end face can be detected.

[0016] Further preferably, the clamping assembly also includes a telescopic cylinder fixedly connected to the lifting rod, a telescopic rod connected to the telescopic cylinder, and a mounting block fixedly connected to the end of the telescopic rod away from the telescopic cylinder.

[0017] By adopting the above technical solution, the telescopic cylinder can drive the installation block to move and adjust the position of the clamping plate on the curtain wall panel. It can be used to test the wind pressure resistance performance of the supporting structure when it is connected to the curtain wall panel at different positions.

[0018] Further preferably, the end of the lifting rod away from the drive assembly is fixedly connected to a support platform capable of supporting the curtain wall panel.

[0019] By adopting the above technical solution, the support platform can support the curtain wall panel when the clamping component adjusts the clamping position.

[0020] Further preferably, a slot is provided on the support platform.

[0021] By adopting the above technical solution, the slot is used to engage the curtain wall panel and prevent the curtain wall panel from detaching from the support platform.

[0022] Further preferably, the drive assembly includes a belt drive assembly and a drive motor that drives the belt drive assembly. The belt drive assembly includes pulleys of the same number as the clamping assembly and a drive belt connected to the pulleys. A drive shaft is fixedly connected to the pulleys. A threaded hole is opened at the end of the lifting rod facing the drive assembly. A thread is machined on the drive shaft to connect with the threaded hole.

[0023] By adopting the above technical solution, all transmission shafts are rotated under the drive of the drive motor and through the transmission of the belt transmission component, thereby realizing the lifting of the lifting rod through the screw transmission.

[0024] Further preferably, the transmission ratio of the belt drive assembly is 1.

[0025] By adopting the above technical solution, the belt drive component has a transmission ratio of 1, which enables all clamping components to be adjusted in a synchronous manner.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. In this application, a pressure sensor is used to reflect the pressure borne by the curtain wall panel when it is subjected to wind pressure, thereby reflecting the pressure that the supporting structure connected to the curtain wall panel needs to bear. This not only detects the wind pressure resistance performance of the curtain wall panel itself, but also detects the wind pressure resistance performance of the building curtain wall from the strength of the supporting structure, thus improving the accuracy of the test results.

[0028] 2. In a further embodiment of this application, the distance between the curtain wall panel and the first end face can be adjusted, as can the wind force and direction of the fan, so that the curtain wall panel can be tested under multiple wind pressure conditions, ensuring the comprehensiveness of the test.

[0029] 3. In a further embodiment of this application, the first end face is simulated as a building surface and is designed as a convex, concave, or corrugated surface to test the wind pressure resistance performance of the curtain wall panel when it is used as an enclosure for the exterior walls of different buildings, thereby enabling the testing of the applicability of the curtain wall panel. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of a wind resistance testing device for building curtain walls;

[0031] Figure 2 This is a three-dimensional cross-sectional view of the control panel;

[0032] Figure 3 This is a frontal sectional view of the control panel;

[0033] Figure 4 This is a three-dimensional structural diagram of the testing organization;

[0034] Figure 5 yes Figure 4 Enlarged diagram of A in the middle;

[0035] Figure 6 This is a structural schematic diagram of the second embodiment of the first end face;

[0036] Figure 7 This is a structural schematic diagram of the third embodiment of the first end face;

[0037] Figure 8 This is a structural schematic diagram of the fourth embodiment of the first end face.

[0038] Explanation of reference numerals in the attached drawings: 1. Detection mechanism; 11. Operating table; 111. Cavity; 112. Transmission belt; 113. Transmission shaft; 114. Pulley; 115. Through hole; 116. Drive motor; 12. Clamping assembly; 120. Threaded hole; 121. Column; 122. Lifting rod; 123. Telescopic cylinder; 124. Support platform; 125. Slot; 126. Clamping plate; 1261. Pressure sensor; 127. Clamping cylinder; 128. Mounting block; 129. Telescopic rod; 13. First end face; 2. Air supply mechanism; 21. Base; 22. Lifting machine; 23. Mounting platform; 24. Power supply box; 25. Fan; 3. Curtain wall panel. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1 -Appendix Figure 8 This application will be described in further detail.

[0040] This application discloses a device for testing the wind resistance of building curtain walls, as shown in the attached document. Figure 1 It is used to test the wind pressure resistance performance of curtain wall panel 3.

[0041] Example 1

[0042] The testing device includes a testing mechanism 1 for installing curtain wall panels 3 and an air supply mechanism 2 for blowing air onto the curtain wall panels 3, which can simulate the wind pressure that the curtain wall panels 3 are subjected to in actual use. The testing mechanism 1 includes an operating table 11, the bottom of which is fixedly installed on the ground to prevent it from being blown away by the air supply mechanism 2. The upper surface of the operating table 11 is a first end face 13 that simulates the exterior wall of a building. The first end face 13 is flat, and several sets of clamping components 12 for clamping the curtain wall panels 3 are fixedly installed on the first end face 13. The operating table 11 is provided with a driving component that drives the clamping components 12 to move closer to or away from the first end face 13.

[0043] In this embodiment, four sets of clamping components 12 are provided. The four sets of clamping components 12 are arranged in a rectangular array on the first end face 13. The curtain wall panel 3 is also a rectangular panel. Two sets of clamping components 12 are clamped on the left and right sides of the curtain wall panel 3 respectively. The curtain wall panel 3 is parallel to the first end face 13.

[0044] The air supply mechanism 2 includes a fan 25, a power supply box 24, a mounting platform 23, a lifting machine 22, and a base 21. The power supply box 24 is used to supply power to the fan 25 to drive the fan 25 to rotate. The power supply box 24 is fixedly installed on the mounting platform 23, and the lifting machine 22 is installed between the mounting platform 23 and the base 21. The air supply mechanism 2 is installed according to the wind force and wind direction requirements during the test.

[0045] Specifically, the wind force is controlled by the power supply voltage of the power supply box 24, while the wind direction is adjusted by the installation position of the air supply mechanism 2. When the base 21 of the air supply mechanism 2 is fixed on the ground, the wind direction blown by the fan 25 is horizontal, that is, the wind direction is parallel to the curtain wall panel 3; when the base 21 of the air supply mechanism 2 is hoisted to directly above the curtain wall panel 3 by a crane, the wind direction blown by the fan 25 is vertical, that is, the wind direction is perpendicular to the curtain wall panel 3. When hoisting the air supply mechanism 2 by a crane, the hoisting angle can be adjusted so that the wind direction blown by the fan 25 is not perpendicular to the curtain wall panel 3 but at a certain angle.

[0046] Furthermore, when the wind direction is parallel to the curtain wall panel 3, the lifting machine 22 can lift the mounting platform 23, power supply box 24, and fan 25, allowing the air blown by the fan 25 to be positioned above or below the curtain wall panel 3. When the fan 25 blows air towards the lower side of the curtain wall panel 3, i.e., between the curtain wall panel 3 and the first end face 13, the air velocity between the curtain wall panel 3 and the first end face 13 is high and the air pressure is low, at which point the wind pressure borne by the curtain wall panel 3 is downward. When the fan 25 blows air towards the upper side of the curtain wall panel 3, the air velocity away from the upper side of the curtain wall panel 3 is high and the air pressure is low, at which point the wind pressure borne by the curtain wall panel 3 is upward. This allows for the testing of the wind pressure resistance performance of the curtain wall panel 3 under various wind force and direction conditions, ensuring the comprehensiveness of the testing. In this embodiment, the air supply mechanism 2 is located behind the operating platform 11, providing airflow to the curtain wall panel 3 in both the front and rear directions.

[0047] For driver components, see attached Figure 2 Appendix Figure 3 As shown, the system includes a belt drive assembly with a transmission ratio of 1, a drive motor 116 driving the belt drive assembly, and a belt drive assembly including pulleys 114 (the same number as the clamping assembly 12) and a drive belt 112 connected to the pulleys 114. In this embodiment, four pulleys 114 are provided, arranged in a rectangular pattern with vertical axes. One pulley 114 is connected to the output shaft of the drive motor 116. A drive shaft 113 is fixedly connected to the upper end of each of the four pulleys 114, and the drive shaft 113 is threaded for connection with the clamping assembly 12. Specifically, a cavity 111 is formed in the operating table 11, and the pulleys 114 and drive belt 112 are all disposed in the cavity 111. The drive motor 116 is fixed to the lower side wall of the cavity 111.

[0048] As for clamping component 12, see attached... Figure 4 Appendix Figure 5As shown, the device includes a lifting rod 122. A threaded hole 120 is provided at the lower end of the lifting rod 122 for threaded connection with the drive shaft 113. A telescopic cylinder 123 is fixedly connected to the lifting rod 122. A telescopic rod 129 is connected to the telescopic cylinder 123. An installation block 128 is fixedly connected to the end of the telescopic rod 129 away from the telescopic cylinder 123. A clamping cylinder 127 is fixedly installed on the installation block 128. Two clamping plates 126 are connected to the clamping cylinder 127. A pressure sensor 1261 for monitoring the pressure between the curtain wall panel 3 and the clamping plate 126 is fixedly provided on the relatively close end face of the two clamping plates 126. In this embodiment, in order to maintain the stability of the lifting rod 122 during the lifting process, a column 121 is fixedly provided on the top of the operating table 11. A through hole 115 is provided in the column 121, which is vertically open. The lifting rod 122 passes through the through hole 115. The column 121 and the through hole 115 support and guide the lifting rod 122. The column 121 can be integrally formed with the operating table 11.

[0049] In addition, the clamping cylinder 127 is fixedly installed on the mounting block 128 in the vertical direction, and the two clamping plates 126 move up and down and can clamp on the upper and lower end faces of the curtain wall panel 3 respectively. When the clamping plate 126 clamps the curtain wall panel 3 and the air supply mechanism 2 is not started, the pressure detection value of the pressure sensor 1261 is set to zero. The clamping plate 126 can simulate the connection of the curtain wall panel 3 as a support structure.

[0050] Regarding the telescopic cylinder 123, in this embodiment, the telescopic rod 129 connected to the telescopic cylinder 123 is horizontally arranged. Under the drive of the telescopic cylinder 123, the telescopic rod 129 extends and retracts, thereby driving the mounting block 128, the clamping cylinder 127, and the clamping plate 126 to move, adjusting the position of the clamping plate 126 on the curtain wall panel 3, which is used to detect the influence of the connection position of the support structure on the curtain wall panel 3 on the wind pressure resistance performance.

[0051] When the clamping position of the clamping plate 126 is adjusted, the supporting effect of the curtain wall panel 3 is reduced. To prevent the curtain wall panel 3 from falling, a support platform 124 is fixedly connected to the top of the lifting rod 122. The support platform 124 has slots 125. When the position of the clamping plate 126 needs to be adjusted, the clamping cylinder 127 drives the two clamping plates 126 to move down synchronously until the four corners of the curtain wall panel 3 are engaged in the slots 125 on the four support platforms 124. At this time, the clamping plates 126 are released for position adjustment. After the clamping plate 126 re-clamps the curtain wall panel 3, the clamping cylinder 127 needs to drive the two clamping plates 126 to move up synchronously, thereby causing the curtain wall panel 3 to move upward and disengage from the slots 125.

[0052] Example 2

[0053] As attached Figure 6As shown, the difference from Embodiment 1 is that the first end face 13 is an upwardly convex surface, which is used to simulate the wind pressure on the curtain wall panel 3 when the exterior wall of the building is convex.

[0054] Example 3

[0055] As attached Figure 7 As shown, the difference from Embodiment 1 is that the first end face 13 is a concave surface that is recessed downwards, which is used to simulate the wind pressure on the curtain wall panel 3 when the exterior wall of the building is concave.

[0056] Example 4

[0057] As attached Figure 8 As shown, the difference from Embodiment 1 is that the first end face 13 is an uneven corrugated surface, which is used to simulate the wind pressure on the curtain wall panel 3 when the exterior wall of the building is corrugated.

[0058] The implementation principle of a building curtain wall wind resistance testing device disclosed in this application is as follows:

[0059] First, according to the actual installation requirements, select an operating table 11 with a suitable first end face 13 shape, place the curtain wall panel 3 to be tested into the slot 125 of the support table 124, start the clamping cylinder 127 and clamp the curtain wall panel 3 through the clamping plate 126, and reset the pressure value of the pressure sensor 1261 to zero.

[0060] Next, start the air supply mechanism 2 to blow air onto the curtain wall panel 3. After the value monitored by the pressure sensor 1261 stabilizes, record the corresponding reading. Change the air force and direction of the air supply mechanism 2, and record the reading after the value monitored by the pressure sensor 1261 stabilizes each time the air pressure is changed.

[0061] Then, start the drive motor 116 and drive the drive shaft 113 to rotate through the belt drive assembly, thereby driving the four lifting rods 122 to rise and fall synchronously, changing the distance between the curtain wall panel 3 and the first end face 13, and then blowing air pressure to the curtain wall panel 3 through the air supply mechanism 2; the distance adjustment can be performed multiple times and the corresponding distance and the reading after the pressure sensor 1261 monitors the value to be stable are recorded.

[0062] Next, the clamping cylinder 127 drives the two clamping plates 126 to move down synchronously until the four corners of the curtain wall panel 3 are engaged in the slots 125 on the four support platforms 124. At this point, the clamping plates 126 are released for position adjustment. After the clamping plates 126 re-clamp the curtain wall panel 3, the clamping cylinder 127 needs to drive the two clamping plates 126 to move up synchronously, thereby causing the curtain wall panel 3 to move upward and disengage from the slots 125, completing the adjustment of the clamping position of the clamping plates 126. Then, the air supply mechanism 2 blows air to the curtain wall panel 3 to provide air pressure. The clamping position adjustment can be performed multiple times, and the corresponding clamping positions and the readings of the pressure sensor 1261 after they stabilize are recorded.

[0063] Finally, based on the recorded pressure sensor 1261 readings, the distance and clamping position between the curtain wall panel 3 and the first end face 13 with the smallest value are selected as the distance between the curtain wall panel 3 and the building exterior wall and the installation position of the supporting structure during the actual installation of the curtain wall panel 3.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wind resistance testing device for building curtain walls, used to test the wind pressure resistance performance of curtain wall panels (3), characterized in that, The device includes a detection mechanism (1) for installing a curtain wall panel (3) and an air supply mechanism (2) for blowing air onto the curtain wall panel (3). The detection mechanism (1) includes an operating table (11) with a first end face (13). Several sets of clamping components (12) for clamping the curtain wall panel (3) are fixedly installed on the first end face (13). The clamping components (12) include two clamping plates (126) for clamping the curtain wall panel (3) and a clamping cylinder (127) for driving the two clamping plates (126) to slide closer or further away from each other. A pressure sensor (1261) for monitoring the pressure between the curtain wall panel (3) and the clamping plate (126) is fixedly provided on the end face of the clamping plate (126) that is closer to each other. The operating table (11) is provided with a driving component for driving the clamping components (12) to move closer or further away from the first end face (13). The first end face (13) is a plane, a convex surface, a concave surface, or a corrugated surface; The clamping assembly (12) further includes a mounting block (128) for fixing the clamping cylinder (127) and a lifting rod (122) fixedly connected to the mounting block (128), the lifting rod (122) being connected to the output end of the drive assembly; The clamping assembly (12) further includes a telescopic cylinder (123) fixedly connected to the lifting rod (122), a telescopic rod (129) connected to the telescopic cylinder (123), and the mounting block (128) fixedly connected to the end of the telescopic rod (129) away from the telescopic cylinder (123).

2. The wind resistance testing device for building curtain walls according to claim 1, characterized in that, The air supply mechanism (2) includes a fan (25), a power supply box (24) for driving the fan (25) to rotate, a mounting platform (23) for mounting the power supply box (24), a lifting machine (22) fixed on the mounting platform (23), and a base (21) mounted on the side of the lifting machine (22) away from the mounting platform (23).

3. The wind resistance testing device for building curtain walls according to claim 1, characterized in that, The lifting rod (122) is fixedly connected to a support platform (124) that can support the curtain wall panel (3) at the end away from the drive assembly.

4. The wind resistance testing device for building curtain walls according to claim 3, characterized in that, The support platform (124) is provided with a slot (125).

5. The wind resistance testing device for building curtain walls according to claim 1, characterized in that, The drive assembly includes a belt drive assembly and a drive motor (116) for driving the belt drive assembly. The belt drive assembly includes pulleys (114) of the same number as the clamping assembly (12) and a drive belt (112) connected to the pulleys (114). A drive shaft (113) is fixedly connected to the pulleys (114). The lifting rod (122) has a threaded hole (120) at one end facing the drive assembly. The drive shaft (113) has a thread that is threaded to engage with the threaded hole (120).

6. The wind resistance testing device for building curtain walls according to claim 5, characterized in that, The transmission ratio of the belt drive assembly is 1.

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