A pull-out resistance testing device for building curtain wall connection

Abstract

The present invention discloses a pull-out resistance testing device for building curtain wall connection, which specifically relates to the field of curtain wall detection technology, including a positioning frame, the positioning frame including a main bracket, telescopic frames are slidably installed at both ends of the main bracket, a positioning extrusion plate is arranged on the telescopic frame, a telescopic driving member for driving the telescopic frame to move is arranged on the main bracket, a sub-bracket is arranged on the main bracket, and pressure units are arranged at both ends of the sub-bracket and at the position of the curtain wall panel in the middle of the main bracket. The present invention adjusts the relative expansion and contraction of the telescopic frame and the main bracket so that the positioning extrusion plate forms an extrusion on the building structure, and can provide stable support for the positioning frame with the help of the building structure. Since the installation point of the positioning frame is not on the curtain wall structure, and the building structure as the structure of the building itself also has high rigidity, therefore, during detection, the positioning frame will not be deformed by the force point structure to affect the test parameters, thereby improving the accuracy of the device test.

Description

Technical Field

[0001] The invention relates to the technical field of curtain wall detection, and more particularly to a pull-out resistance testing device for building curtain wall connections. Background Art

[0002] The building curtain wall is composed of panels and supporting structure systems. It has the specified bearing capacity, deformation capacity and the ability to adapt to the displacement of the main structure. It has bearing function, aesthetics and architectural function. As an indispensable component of modern architecture, the building curtain wall plays an important role in the construction of modern buildings. At present, when manufacturing and using curtain wall panels, the performance of curtain wall panels is particularly valued. The performance of building curtain walls directly affects many aspects of the building, such as safety, aesthetics, energy saving and environmental protection.

[0003] As the service life of curtain wall structures continues to increase, the connection structure between the curtain wall mechanism and the main building will also age, and some parts will be damaged, affecting the installation stability of the curtain wall panels. Under the influence of the curtain wall structure's own gravity and external wind loads, the curtain wall panels will be at risk of falling off, especially the curtain wall structure of high-rise buildings. Once the curtain wall panels fall off and fall from a high altitude, it will cause an irreversible major accident. Therefore, the curtain wall structure after installation needs to be inspected regularly, and the curtain wall panels must be tested for tensile strength. Especially with the increase in the number of years of use, the inspection frequency also needs to be gradually increased to ensure the safety performance of the curtain wall panels, promptly detect and deal with problematic curtain wall units, and avoid accidents.

[0004] In the prior art, an external testing device is usually used, that is, without dismantling the existing curtain wall structure, the test is carried out with the help of a reaction frame and a tension structure, wherein the reaction frame needs to be installed on the exposed frame of the curtain wall or the gas curtain wall panel around the curtain wall panel to be tested, and then the center of the thorny curtain wall panel is adsorbed by a suction cup, and a tension is applied to the suction cup with the help of the tension structure to simulate the pulling of the curtain wall panel, thereby realizing the pull-out resistance test of the curtain wall panel. However, in the above method, while the reaction frame applies a pull-out force to the curtain wall panel to be tested, it will also form a reaction pressure on the exposed frame of the curtain wall or other curtain wall panels acted by the reaction frame. If the pull-out resistance requirement for the curtain wall structure is high, the pulling force required to be applied during the test is large, and the exposed frame of the curtain wall or other curtain wall panels acted by the reaction frame will form a deformation in the opposite direction to the curtain wall panel to be tested, making it difficult to stably test the parameter value of the pull-out limit of the curtain wall panel, thereby affecting the test accuracy of the curtain wall panel to be tested. Summary of the invention

[0005] The present invention provides a pull-out resistance testing device for building curtain wall connections, and aims to solve the problem that when the existing testing device is testing, the curtain wall exposed frame or other curtain wall panels acted by the reaction frame form a deformation in the opposite direction to the curtain wall panel to be tested, thereby affecting the testing accuracy of the curtain wall panel to be tested.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pull-out resistance test device for building curtain wall connection, comprising a positioning frame, the positioning frame comprising a main bracket, telescopic frames are slidably mounted on both ends of the main bracket, a positioning extrusion plate is arranged on the telescopic frame, and a telescopic driving member for driving the telescopic frame to move is arranged on the main bracket, the telescopic driving member drives the telescopic frame to extend, so that the positioning extrusion plate contacts with the building structure to form extrusion and fix the positioning frame;

[0007] A secondary bracket is arranged on the main bracket, and pressure units are arranged at both ends of the secondary bracket and at the position of the curtain wall panel in the middle of the main bracket;

[0008] The pressure unit includes a support plate and a pressure airbag. The pressure airbag is fixedly installed on the support plate. A hard layer is provided on the side of the pressure airbag close to the curtain wall panel. The pressure airbag is connected to the inflation device. A pressure sensor is installed in the hard layer. The pressure sensor is used to detect the pressure between the hard layer of the pressure airbag and the curtain wall panel. A displacement sensor is installed on the support plate. The displacement sensor is used to measure the displacement of the hard layer relative to the support plate.

[0009] In a preferred embodiment, the telescopic drive member is a threaded rod structure, the telescopic drive member is threadedly installed on the main bracket, the output end of the telescopic drive member is rotatably connected to the positioning extrusion plate, the end of the telescopic drive member away from the positioning extrusion plate is the rotation control end, and a rubber pad is installed on the positioning extrusion plate.

[0010] In a preferred embodiment, the auxiliary bracket includes a horizontal frame and a vertical guide frame. The vertical guide frame is vertically arranged. The main bracket is provided with a guide sleeve structure adapted to the vertical guide frame. The vertical guide frame is vertically slidably installed in the guide sleeve structure. The horizontal frame includes a fixed frame and a sliding frame. The sliding frames in each group of horizontal frames are arranged in two groups. The fixed frame is horizontally arranged. The sliding frame is horizontally slidably installed on the fixed frame. The two pressure units on each group of auxiliary brackets are respectively installed on the two sliding frames.

[0011] In a preferred embodiment, positioning structures are provided between the guide sleeve and the vertical guide frame and between the fixed frame and the sliding frame, and the positioning structures are used to position the vertical guide frame and the sliding frame after adjusting their positions.

[0012] In a preferred embodiment, a negative pressure adsorption hole is opened on one side of the hard layer close to the curtain wall panel, and a negative pressure piston is slidably installed in the negative pressure adsorption hole. An elastic member for driving the negative pressure piston to reset is arranged between the negative pressure piston and the negative pressure adsorption hole, and a pulling structure is arranged on the support plate. When the pulling structure pulls the negative pressure piston away from the curtain wall panel, negative pressure is formed in the negative pressure adsorption hole to adsorb the curtain wall panel, and a flexible rubber structure is arranged at the position of the negative pressure adsorption hole facing the curtain wall panel.

[0013] In a preferred embodiment, the pulling and pulling structure is a piston block, a piston cavity is provided in the support plate, the piston block is slidably installed in the piston cavity, the end of the piston cavity away from the pressure airbag and the end of the negative pressure adsorption hole close to the pressure airbag are both provided with air holes connected to the outside world, a guide rod is fixedly connected to the negative pressure piston, the guide rod passes through the hard layer and extends into the pressure airbag, and the guide rod slides with the hard layer, the piston block and the guide rod are connected by a connecting rope, the end of the piston cavity close to the pressure airbag is connected to the inner cavity of the pressure airbag, and a limiting structure for limiting the movement of the piston block is provided inside the end of the piston cavity close to the pressure airbag.

[0014] In a preferred embodiment, the testing device also includes a shielding cover, a flexible sealing body is provided on the shielding cover, a negative pressure groove is provided in the flexible sealing body, and the negative pressure groove is connected to a vacuum extraction device. During the test, the shielding cover covers the outside of the curtain wall panel to be tested, the flexible sealing body is used to seal the curtain wall structure, and the negative pressure groove vacuum adsorbs the curtain wall structure through vacuum extraction.

[0015] In a preferred embodiment, a first adsorption plate is fixedly installed on the outside of the pressure airbag, a second adsorption plate is arranged inside the shielding cover at a position corresponding to the first adsorption plate, the second adsorption plate is connected to the shielding cover through a flexible structure, an electromagnet is fixedly installed on the inside of the first adsorption plate, and an adsorption magnet is fixedly installed on the inside of the second adsorption plate.

[0016] In a preferred embodiment, an active magnet is provided inside the first adsorption disk, an active cavity is provided inside the first adsorption disk, the active magnet is slidably installed in the active cavity, a positioning column is fixedly connected to the active magnet, and a socket corresponding to the positioning column is provided on the second adsorption disk. When the electromagnet is started, the active magnet approaches the electromagnet, driving the positioning column to move out.

[0017] In a preferred embodiment, a limited sliding cavity is provided in the second adsorption disk, and the adsorption magnet is slidably installed in the limited sliding cavity. A locking pin is slidably installed at a position corresponding to the insertion hole in the second adsorption disk, and a slot adapted for the locking pin is provided on the positioning column. An inclined surface is provided at the position of the adsorption magnet corresponding to the locking pin, and one end of the locking pin slides in cooperation with the inclined surface.

[0018] The beneficial effects of the present invention are as follows: the present invention adjusts the relative expansion and contraction of the telescopic frame and the main support so that the positioning extrusion plate forms an extrusion on the building structure, and can use the building structure to provide stable support for the positioning frame. Moreover, since the installation point of the positioning frame is not on the curtain wall structure, and the building structure, as the structure of the building itself, also has high rigidity, therefore, during detection, the positioning frame will not be deformed by the force point structure and affect the test parameters, thereby greatly improving the accuracy of the device test. When the pressure of the pressure unit acts on the curtain wall panel, it will also act on the curtain wall frame. Therefore, during detection, not only the pull-out resistance of the connection between the curtain wall panel and the curtain wall frame is tested, but also the pull-out resistance of the curtain wall frame itself and the connection between the curtain wall frame and the building structure is tested, thereby ensuring that the curtain wall structure has stable connection performance and sufficient safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a usage scenario diagram of the present invention.

[0020] Figure 2 It is a side view of the usage scenario of the present invention.

[0021] Figure 3 It is a schematic diagram of the overall structure of the testing device of the present invention.

[0022] Figure 4 This is a schematic diagram of the distribution of the various groups of pressure air bags on the back of the curtain wall panel of the present invention.

[0023] Figure 5 This is a state diagram of the present invention in which all the pressure airbags simultaneously apply pressure to simulate the global pulling of the curtain wall panel.

[0024] Figure 6 This is a schematic diagram of a state in which only the upper group of pressure airbags simulates the pulling of a partial area of ​​a curtain wall panel according to the present invention.

[0025] Figure 7 It is a schematic diagram of the overall structure of the pressure applying unit of the present invention.

[0026] Figure 8 The overall structural diagram of the pressure unit after adding the synchronous adsorption structure of the present invention.

[0027] Fig. 9 For the present invention Figure 8 A magnified view of the local structure.

[0028] Fig.10 It is a schematic diagram of the influence of external wind force on the curtain wall panel of the present invention when a partial protruding displacement is generated after pressure is applied.

[0029] Fig.11 This is a schematic diagram of the structure of applying a shielding cover to the periphery of the curtain wall panel to be tested during the test of the present invention.

[0030] Fig.12 This is a side view of the test state after applying a shielding cover to the present invention.

[0031] Fig.13 For the present invention Fig.12 A-section structure enlarged view.

[0032] Fig.14 It is a schematic diagram of the cooperation of the shielding cover installed inside the exposed part frame when the frame structure of the curtain wall is exposed (non-hidden frame curtain wall) according to the present invention.

[0033] Fig.15 This is a schematic diagram of the structure of the magnetic adsorption component added to the present invention.

[0034] Fig.16 This is a schematic diagram of a state in which the first adsorption plate and the second adsorption plate are in direct contact and locked by a locking assembly after the curtain wall panel is removed according to the present invention.

[0035] The accompanying drawings are marked as follows: 1. positioning frame; 11. main frame; 12. telescopic frame; 13. positioning extrusion plate; 14. telescopic driving member; 2. auxiliary frame; 21. horizontal frame; 211. fixed frame; 212. sliding frame; 22. vertical guide frame; 3. pressure unit; 31. support plate; 311. displacement sensor; 312. piston chamber; 313. piston block; 32. pressure airbag; 33. hard layer; 331. pressure sensor Device; 332, negative pressure adsorption hole; 333, negative pressure piston; 334, connecting rope; 34, first adsorption disk; 341, movable magnet; 342, positioning column; 35, electromagnet; 4, building structure; 5, curtain wall structure; 51, curtain wall frame; 52, curtain wall panel; 6, shielding cover; 61, flexible sealing body; 62, negative pressure groove; 63, second adsorption disk; 631, locking pin; 64, adsorption magnet; 641, inclined plane. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0037] Refer to the instruction manual Figures 1 to 16, a pull-out force test device for building curtain wall connection, comprising a positioning frame 1, the positioning frame 1 is used to be fixed in a building structure 4 in an installation area of ​​a curtain wall structure 5, wherein the curtain wall structure 5 comprises a curtain wall frame 51 and a curtain wall panel 52, the curtain wall frame 51 is built on the building structure 4, and the curtain wall panel 52 is installed on the curtain wall frame 51, the positioning frame 1 comprises a main bracket 11, both ends of the main bracket 11 are slidably mounted with a telescopic frame 12, the telescopic frame 12 is provided with a positioning extrusion plate 13, and the main bracket 11 is provided with a telescopic driving member 14 for driving the telescopic frame 12 to move. When the positioning frame 1 is installed, the telescopic driving member 14 drives the telescopic frame 12 to extend, and makes the positioning extrusion plate 13 contact with the building structure 4 to form an extrusion to fix the positioning frame 1. For example, the positioning frame 1 can be set between two parallel walls of the building structure 4, between upper and lower layer plate structures of the building structure 4, or between parallel structural beams, and the positioning frame 1 is fixed by controlling the extension of the telescopic frame 12;

[0038] The main support 11 is provided with a sub-support 2, and pressure units 3 are provided at both ends of the sub-support 2 and at the position of the curtain wall panel 52 in the middle of the main support 11. Figure 4 The five pressure units 3 are respectively arranged at the four corners and the center of a single curtain wall panel 52, and refer to the attached manual. Figure 5 and attached Figure 6 By controlling all the pressure units 3 to apply pressure to the curtain wall panel 52 synchronously or controlling the corresponding number and position of the pressure units 3 to apply pressure to the curtain wall panel 52 individually, it is possible to simulate the pull-out resistance simulation and test of the entire region (uniform pressure on the whole) or a local region (pressure on a single corner region or a single side region) of the curtain wall panel 52, thereby obtaining simulation test parameters for a variety of different scenarios;

[0039] The pressure unit 3 includes a support plate 31 and a pressure airbag 32. The pressure airbag 32 is fixedly mounted on the support plate 31. A hard layer 33 is provided on the side of the pressure airbag 32 close to the curtain wall panel 52. The pressure airbag 32 is connected to the inflatable device through a pipeline and a control valve. The inflatable device inflates the pressure airbag 32 to expand it, contacts the curtain wall panel 52 on the inner side of the curtain wall panel 52 and applies pressure to the curtain wall panel 52 to simulate the external pulling of the curtain wall panel 52. A pressure sensor 331 is installed in the hard layer 33. The pressure sensor 331 is used to detect the expansion of the pressure airbag 32. The pressure between the hard layer 33 and the curtain wall panel 52 during expansion is measured to obtain the pressure parameters, and a displacement sensor 311 is installed on the support plate 31. The displacement sensor 311 is used to measure the displacement change parameters of the hard layer 33 relative to the support plate 31 to obtain the displacement change parameters of the curtain wall panel 52 after pressure is applied during the test (if the curtain wall panel 52 is displaced, the hard layer 33 will also produce corresponding displacement). Among them, the displacement sensor 311 can be a wire displacement sensor, and its output end is connected to the hard layer 33 through a wire, or other displacement sensors such as a resistive sensor.

[0040] For further information, please refer to the attached manual. Figure 2 The telescopic driving member 14 is a threaded rod structure, and the telescopic driving member 14 is threadedly installed on the main bracket 11. The output end of the telescopic driving member 14 is rotatably connected to the positioning extrusion plate 13. The end of the telescopic driving member 14 away from the positioning extrusion plate 13 is a rotation control end. The rotation control end serves as an input end, and a control structure such as a hexagonal block and a crank can be installed to control the rotation of the telescopic driving member 14, thereby realizing the mobile drive of the telescopic frame 12, so that the positioning extrusion plate 13 is pressed against the building structure 4, and the positioning frame 1 is firmly installed between the two adjacent building structures 4. In order to improve the stability after installation and the uniformity of the extrusion of the positioning extrusion plate 13 during installation, a rubber cushion layer is also installed on the positioning extrusion plate 13 to improve the friction and adaptability of the positioning extrusion plate 13 after extrusion of the building structure 4.

[0041] It should be noted that, with the help of the threaded self-locking of the threaded rod structure, it can be ensured that the positioning frame 1 has a stable supporting force after installation, and can provide a stable pressure on the curtain wall panel 52. The device adjusts the relative expansion and contraction of the telescopic frame 12 and the main bracket 11, so that the positioning extrusion plate 13 squeezes the building structure 4, thereby transferring the actual installation force point of the device to the building structure 4, and using the building structure 4 to provide stable support for the positioning frame 1. In actual testing, when the pressure of the pressure unit 3 acts on the curtain wall panel 52, it will also act on the curtain wall frame 51. Therefore, during the inspection, not only the pressure of the pressure unit 3 is tested. The pull-out resistance of the connection between the curtain wall panel 52 and the curtain wall frame 51 is tested, and the pull-out resistance of the curtain wall frame 51 itself and the connection between the curtain wall frame 51 and the building structure 4 is also tested. Then, the curtain wall panel 52 and the curtain wall frame 51 are tested as a whole to ensure that the curtain wall structure 5 has stable connection performance and sufficient safety. Since the installation point of the positioning frame 1 is not on the curtain wall structure 5, and the building structure 4, as the structure of the building itself, also has high rigidity, therefore, during the detection, the positioning frame 1 will not be deformed by the force point structure and affect the test parameters, which greatly improves the accuracy of the device test.

[0042] For further information, please refer to the attached manual. Figures 1 to 3 The auxiliary bracket 2 includes a horizontal frame 21 and a vertical guide frame 22. The vertical guide frame 22 is vertically arranged. The main bracket 11 is provided with a guide sleeve structure adapted to the vertical guide frame 22. The vertical guide frame 22 is vertically slidably installed in the guide sleeve structure, so that the heights of the two groups of auxiliary brackets 2 can be adjusted to adapt to curtain wall panels 52 of different heights and positions. At the same time, the horizontal frame 21 includes a fixed frame 211 and a sliding frame 212. The sliding frame 212 in each group of horizontal frames 21 is set to two groups, and the fixed frame 2 11 is horizontally arranged, the sliding frame 212 is horizontally slidably installed on the fixed frame 211, and the two pressure units 3 on each group of auxiliary brackets 2 are respectively installed on the two sliding frames 212. Specifically, the support plate 31 of the pressure unit 3 on the auxiliary bracket 2 is fixedly installed on the sliding frame 212 (the support plate 31 of the pressure unit 3 on the main bracket 11 is directly fixedly installed on the main bracket 11), so that the lateral span of the two pressure units 3 on each group of auxiliary brackets 2 can be adjusted to adapt to curtain wall panels 52 of different widths.

[0043] When the device is actually used, the position of the pressure unit 3 on the main bracket 11 can be controlled by adjusting the position of the positioning frame 1 and the telescopic length of each telescopic frame 12, so that it corresponds to the center of the curtain wall panel 52 to be tested, and then the sliding degree of the vertical guide frame 22 in the upper and lower groups of auxiliary brackets 2 is adjusted to adjust the upper and lower heights of the two groups of horizontal frames 21, so that the pressure units 3 on the two groups of auxiliary brackets 2 correspond to the top and bottom positions of the curtain wall panel 52 respectively, and then by adjusting the sliding of the sliding frame 212 in each group of auxiliary brackets 2, the position of the two pressure units 3 on each group of auxiliary brackets 2 can be adjusted to correspond to the top angle position of the curtain wall panel 52.

[0044] It should be noted that, in the above-mentioned embodiment, the sliding of the vertical guide frame 22 relative to the guide sleeve and the sliding of the sliding frame 212 relative to the fixed frame 211 can be controlled automatically or manually. Regardless of the control method, a corresponding positioning structure is provided. For example, when a hydraulic cylinder, a screw rod and other structures are used as a driving source for automatic control, the hydraulic cylinder and the screw rod themselves serve as positioning structures, and the mechanism is automatically positioned after adjustment. If manual control is adopted, a bolt tightening structure or a positioning pin structure can be provided between the guide sleeve and the vertical guide frame 22 and between the fixed frame 211 and the sliding frame 212, and the positioning of the mobile structure can be realized, thereby ensuring the overall stability of the positioning frame 1 after adjustment.

[0045] In the above embodiment, attention should be paid to the situation where the curtain wall panel 52 fails to meet the test standards and falls off. Therefore, while applying pressure to the curtain wall panel 52, it is also necessary to protect the curtain wall panel 52. For example, a vacuum suction cup is provided to vacuum adsorb the curtain wall panel 52, and a safety rope is connected to protect the curtain wall panel 52. However, since the safety rope cannot provide tension to the curtain wall panel 52 during the test phase and affect the test parameters, the safety rope needs to be kept in a loose state. If the colloid or connecting parts of the curtain wall panel 52 are damaged and the curtain wall panel 52 begins to fall off, the curtain wall panel 52 will first move outward under the pressure of the pressure airbag 32 until the safety rope is straightened for protection. In this process, the curtain wall panel 52 has a high kinetic energy, and then it is easy to break free from the suction cup or cause the safety rope to break due to inertia during emergency stop, and the protection effect is not high enough. Therefore, this embodiment also provides the following technical solutions. For details, refer to the attached manual. Figure 8 and Figure 7A negative pressure adsorption hole 332 is provided on the side of the hard layer 33 close to the curtain wall panel 52, and a negative pressure piston 333 is slidably installed in the negative pressure adsorption hole 332. An elastic member for driving the negative pressure piston 333 to reset is provided between the negative pressure piston 333 and the negative pressure adsorption hole 332, and a pulling structure is provided on the support plate 31. When the pulling structure pulls the negative pressure piston 333 in a direction away from the curtain wall panel 52, negative pressure is formed in the negative pressure adsorption hole 332 to adsorb the curtain wall panel 52, and in order to improve the adsorption effect, a flexible rubber structure is provided at the position of the negative pressure adsorption hole 332 facing the curtain wall panel 52 to improve the sealing between the negative pressure adsorption hole 332 and the curtain wall panel 52.

[0046] For further information, please refer to the attached manual. Fig. 9 The pull-out structure is a piston block 313, a piston chamber 312 is provided in the support plate 31, and the piston block 313 is slidably installed in the piston chamber 312. The end of the piston chamber 312 away from the pressure airbag 32 and the end of the negative pressure adsorption hole 332 close to the pressure airbag 32 are both provided with air holes connected to the outside world, and the negative pressure piston 333 is fixedly connected with a guide rod, which passes through the hard layer 33 and extends into the pressure airbag 32 (ensuring that the inner cavity of the pressure airbag 32 is not connected to the inner cavity of the negative pressure adsorption hole 332), and the guide rod is slidably matched with the hard layer 33, and the piston block 313 is connected to the guide rod by a connecting rope 334, and the end of the piston chamber 312 close to the pressure airbag 32 is connected to the inner cavity of the pressure airbag 32, and a limiting structure for limiting the movement of the piston block 313 is provided inside the end of the piston chamber 312 close to the pressure airbag 32

[0047] It should be noted that, in actual use, the pressure airbag 32 is first attached to the curtain wall panel 52, and then pressure is gradually added to the pressure airbag 32 to expand the pressure airbag 32 and apply pressure to the curtain wall panel 52. During this process, the air pressure inside the pressure airbag 32 can push the piston block 313 to move, and then the negative pressure piston 333 is pulled to move with the help of the connecting rope 334, so that negative pressure is formed in the negative pressure adsorption hole 332, and the curtain wall panel 52 is initially adsorbed. As the air pressure in the pressure airbag 32 increases, the negative pressure of the negative pressure adsorption hole 332 also gradually increases, and the adsorption of the curtain wall panel 52 becomes more firm. If the curtain wall panel 52 is separated, the pressure bag 32 will always fit the curtain wall panel 52 under the action of the internal pressure of the pressure bag 32, that is, the negative pressure adsorption hole 332 can always lift the curtain wall panel 52 and provide adsorption force to the curtain wall panel 52, ensuring that the curtain wall panel 52 can be adsorbed on the pressure bag 32 in time at the moment of separation, thereby reducing the separation kinetic energy of the curtain wall panel 52 and improving the protection effect of the curtain wall panel 52. In the process of the curtain wall panel 52 separating and popping out, the pressure bag 32 itself is adsorbed and fit with the curtain wall panel 52. Therefore, the deformation of the pressure bag 32 gradually changes from longitudinal deformation to longitudinal deformation. The negative pressure piston 333 is pulled back by the connecting rope 334 during the process of the curtain wall panel 52 detaching and moving outwards, and as the detachment distance of the curtain wall panel 52 increases, the hard layer 33 is moved away from the supporting plate 31. As the distance from the support plate 31 increases, the relative movement distance of the negative pressure piston 333 in the negative pressure adsorption hole 332 also increases, and the negative pressure formed in the negative pressure adsorption hole 332 will also be greater, thereby providing a greater adsorption force to the curtain wall panel 52 during the subsequent detachment of the curtain wall panel 52. The structure of the pressure airbag 32 itself is limited and will not allow the curtain wall panel 52 to detach for a large distance. Therefore, the technical curtain wall panel 52 becomes loose, and it is also necessary to maintain the fit between the pressure airbag 32 and the curtain wall panel 52 at the moment of loosening and provide strong and timely adsorption to the curtain wall panel 52 when it loosens and falls off.

[0048] Since the present embodiment has a variety of simulation detection methods, for curtain wall panels 52 with a larger area, when performing local simulation detection, the curtain wall panels 52 may produce local outward deformation or displacement. For curtain wall panels 52 of high-altitude buildings, the wind volume outside the building is large and cannot be controlled. The ultimate purpose of the test of this equipment is to detect the performance of the curtain wall panels 52 in resisting external wind loads. Once the curtain wall panels 52 produce displacement or prominent deformation, refer to the attached manual. Fig.10The external wind force will have an uncontrollable impact on the curtain wall panel 52, thereby affecting the test accuracy. Therefore, in order to improve the test accuracy, it is necessary to eliminate the impact of the external wind force on the curtain wall panel 52 to be tested. For details, refer to the attached manual. Fig.11 and Fig.12 The testing device also includes a shielding cover 6, on which a flexible sealing body 61 is provided, and a negative pressure groove 62 is provided in the flexible sealing body 61, and the negative pressure groove 62 is connected to a vacuum pumping device. During the test, the shielding cover 6 covers the outside of the curtain wall panel 52 to be tested, and the flexible sealing body 61 is used to seal the curtain wall structure 5. The negative pressure groove 62 vacuum absorbs the curtain wall structure 5 by vacuuming, thereby pre-fixing the shielding cover 6, thereby eliminating the influence of the external wind volume on the curtain wall panel 52 to be tested, and improving the test accuracy. At the same time, since the external wind volume is blocked, even if the curtain wall panel 52 to be tested is detached, the detached curtain wall panel 52 is in a windless environment and will not fall off due to the influence of the wind volume, thereby reducing the risk.

[0049] It should be noted that a lifting device can be provided on the shielding cover 6, and the shielding cover 6 can be lifted and installed by a crane on the top of the building. For the hidden frame curtain wall structure 5, since there is no exposed curtain wall frame 51 outside the curtain wall panel 52, the shielding cover 6 is relatively large and can contact several curtain wall panels 52 around the curtain wall panel 52 to be tested, and the flexible sealing body 61 and the negative pressure groove 62 are arranged on the side of the shielding cover 6 directly corresponding to the curtain wall panel 52. Fig.13 , the flexible sealing body 61 and the negative pressure groove 62 are fixed to the surrounding curtain wall panels 52 by vacuum adsorption, and for the non-hidden frame curtain wall structure 5, the curtain wall panels 52 are also exposed by the curtain wall frame 51 outside. At this time, the shielding cover 6 can be set to be the same size as the frame formed between the exposed curtain wall frames 51. During installation, the shielding cover 6 is directly installed in the frame formed by the curtain wall frame 51, and the flexible sealing body 61 and the negative pressure groove 62 are arranged around the shielding cover 6. Fig.14 The flexible sealing body 61 and the negative pressure groove 62 are vacuum-adsorbed with the curtain wall frame 51 exposed on the outside of the curtain wall panel 52 .

[0050] Furthermore, since the shielding cover 6 is located outside the curtain wall structure 5, it is not easy to locate it during actual installation. Therefore, this embodiment also provides a magnetic adsorption component. For details, refer to the attached manual. Fig.15The first adsorption disk 34 is fixedly installed on the outside of the pressure airbag 32, and the second adsorption disk 63 is arranged at the position corresponding to the first adsorption disk 34 inside the shielding cover 6. The second adsorption disk 63 is connected to the shielding cover 6 through a flexible structure (such as a rubber strip, a rope structure, etc.). The electromagnet 35 is fixedly installed inside the first adsorption disk 34, and the adsorption magnet 64 is fixedly installed inside the second adsorption disk 63. When the shielding cover 6 is installed, the electromagnet 35 is energized to generate magnetic force to adsorb the adsorption magnet 64, thereby facilitating the positioning of the shielding cover 6. After the shielding cover 6 is installed, under the adsorption action of the electromagnet 35, the flexible structure between the second adsorption disk 63 and the shielding cover 6 is In the straightened state, there is no pressure between the shielding cover 6 and the second adsorption plate 63, so it does not affect the outward displacement of the curtain wall panel 52. Since the cycle of re-customizing and installing the corresponding curtain wall panel 52 is relatively long, during the test, if the curtain wall panel 52 is detached or damaged, the shielding cover 6 can be used as a temporary structure to block the curtain wall panel 52 at that position to form a temporary curtain wall. At this time, in addition to the vacuum adsorption of the negative pressure groove 62 itself, the magnetic adsorption of the electromagnet 35 and the adsorption magnet 64 will also strengthen the installation adsorption of the shielding cover 6 to ensure the stable use of the shielding cover 6. At the same time, the shielding cover 6 can also protect the curtain wall panel 52 to prevent the curtain wall panel 52 from breaking and falling.

[0051] If the curtain wall panel 52 is cracked, it is necessary to remove the curtain wall panel 52 in time, and then wait for the new curtain wall panel 52 to arrive and be installed. In this process, after the curtain wall panel 52 is removed, the first adsorption plate 34 and the second adsorption plate 63 are in direct contact, and the two can be directly locked at this time. For details, refer to the attached manual. Fig.16The first adsorption disk 34 is provided with an active magnet 341 inside, and an active cavity is provided inside the first adsorption disk 34. The active magnet 341 is slidably installed in the active cavity. The active magnet 341 is fixedly connected with a positioning column 342. The second adsorption disk 63 is provided with a socket corresponding to the positioning column 342. When the electromagnet 35 is started, the active magnet 341 approaches the electromagnet 35, thereby driving the positioning column 342 to be inserted into the socket in the second adsorption disk 63 for positioning. A limited sliding cavity is provided in the second adsorption disk 63, and the adsorption magnet 64 is slidably installed in the limited sliding cavity. A locking pin 631 is slidably installed at the position corresponding to the socket in the second adsorption disk 63. A card groove adapted to the locking pin 631 is provided on the positioning column 342. An inclined surface 641 is provided at the position of the adsorption magnet 64 corresponding to the locking pin 631, and one end of the locking pin 631 is slidably matched with the inclined surface 641. When in use, first start the electromagnet 35 in advance to extend the positioning column 342, then close the electromagnet 35, and then the first adsorption disk 34 is attached to the second adsorption disk 63. After the positioning column 342 enters the socket, turn on the electromagnet 35 again to make the adsorption magnet 64 approach the electromagnet 35 and reach the limit position in the limit slide cavity and cannot move anymore, so that the first adsorption disk 34 forms an adsorption force on the second adsorption disk 63. During the process, the movement of the adsorption magnet 64 causes the inclined surface 641 to push out the locking pin 631, and the locking pin 631 is engaged and locked with the slot on the positioning column 342 to form a locking assembly, thereby connecting the first adsorption disk 34 and the second adsorption disk 63 together. At this time, the pressure airbag 32 can be connected to the vacuum equipment to form a negative pressure on the pressure airbag 32, so that the connection stability of the shielding cover 6 can be improved when the curtain wall panel 52 is cleared, thereby improving the temporary protection performance of the shielding cover 6.

[0052] It should be noted that after use, the electromagnet 35 can be energized in the reverse direction to reverse its magnetic poles, thereby resetting each locking component.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A pull-out resistance testing device for building curtain wall connections, characterized in that: The invention comprises a positioning frame (1), wherein the positioning frame (1) comprises a main frame (11), telescopic frames (12) are slidably mounted on both ends of the main frame (11), a positioning extrusion plate (13) is arranged on the telescopic frame (12), and a telescopic driving member (14) for driving the telescopic frame (12) to move is arranged on the main frame (11), wherein the telescopic driving member (14) drives the telescopic frame (12) to extend, so that the positioning extrusion plate (13) contacts with the building structure (4) to form an extrusion and fix the positioning frame (1); The main support (11) is provided with a secondary support (2), and pressure units (3) are provided at both ends of the secondary support (2) and at a position in the middle of the main support (11) corresponding to the curtain wall panel (52); The pressure unit (3) comprises a support plate (31) and a pressure airbag (32), wherein the pressure airbag (32) is fixedly mounted on the support plate (31), a hard layer (33) is provided on a side of the pressure airbag (32) close to the curtain wall panel (52), the pressure airbag (32) is connected to an inflation device, a pressure sensor (331) is installed in the hard layer (33), and the pressure sensor (331) is used to detect the pressure between the hard layer (33) of the pressure airbag (32) and the curtain wall panel (52), and a displacement sensor (311) is installed on the support plate (31), and the displacement sensor (311) is used to measure the displacement of the hard layer (33) relative to the support plate (31).

2. The pull-out resistance testing device for building curtain wall connection according to claim 1, characterized in that: The telescopic drive member (14) is a threaded rod structure, the telescopic drive member (14) is threadedly mounted on the main bracket (11), the output end of the telescopic drive member (14) is rotationally connected to the positioning extrusion plate (13), the end of the telescopic drive member (14) away from the positioning extrusion plate (13) is a rotation control end, and a rubber cushion layer is mounted on the positioning extrusion plate (13).

3. The pull-out resistance testing device for building curtain wall connection according to claim 2, characterized in that: The auxiliary support (2) comprises a horizontal frame (21) and a vertical guide frame (22), the vertical guide frame (22) being arranged vertically, the main support (11) being provided with a guide sleeve structure adapted to the vertical guide frame (22), the vertical guide frame (22) being vertically slidably mounted in the guide sleeve structure, the horizontal frame (21) comprising a fixed frame (211) and a sliding frame (212), the sliding frames (212) in each group of horizontal frames (21) being arranged in two groups, the fixed frame (211) being arranged horizontally, the sliding frame (212) being horizontally slidably mounted on the fixed frame (211), and the two pressure units (3) on each group of auxiliary supports (2) being respectively mounted on the two sliding frames (212).

4. The pull-out resistance testing device for building curtain wall connection according to claim 3, characterized in that: Positioning structures are provided between the guide sleeve and the vertical guide frame (22) and between the fixed frame (211) and the sliding frame (212), and the positioning structures are used to position the vertical guide frame (22) and the sliding frame (212) after adjusting the positions of the vertical guide frame (22) and the sliding frame (212).

5. The pull-out resistance testing device for building curtain wall connection according to claim 4, characterized in that: A negative pressure adsorption hole (332) is provided on a side of the hard layer (33) close to the curtain wall panel (52), a negative pressure piston (333) is slidably mounted in the negative pressure adsorption hole (332), an elastic member for driving the negative pressure piston (333) to reset is provided between the negative pressure piston (333) and the negative pressure adsorption hole (332), a pulling structure is provided on the support plate (31), when the pulling structure pulls the negative pressure piston (333) in a direction away from the curtain wall panel (52), negative pressure is formed in the negative pressure adsorption hole (332) to adsorb the curtain wall panel (52), and a flexible rubber structure is provided at the position of the negative pressure adsorption hole (332) facing the curtain wall panel (52).

6. The pull-out resistance testing device for building curtain wall connection according to claim 5, characterized in that: The pulling structure is a piston block (313), a piston cavity (312) is provided in the support plate (31), the piston block (313) is slidably mounted in the piston cavity (312), an end of the piston cavity (312) away from the pressure airbag (32) and an end of the negative pressure adsorption hole (332) close to the pressure airbag (32) are both provided with air holes connected to the outside, and a guide rod is fixedly connected to the negative pressure piston (333), and the guide rod penetrates the hard layer (33) and extends into the pressure airbag (32), and the guide rod is slidably matched with the hard layer (33), the piston block (313) and the guide rod are connected by a connecting rope (334), the end of the piston cavity (312) close to the pressure airbag (32) is connected to the inner cavity of the pressure airbag (32), and the end of the piston cavity (312) close to the pressure airbag (32) is provided with a limiting structure for limiting the movement of the piston block (313).

7. The pull-out resistance testing device for building curtain wall connection according to claim 6, characterized in that: The testing device further comprises a shielding cover (6), wherein a flexible sealing body (61) is arranged on the shielding cover (6), wherein a negative pressure groove (62) is arranged in the flexible sealing body (61), and wherein the negative pressure groove (62) is connected to a vacuum extraction device. During testing, the shielding cover (6) covers the outside of the curtain wall panel (52) to be tested, wherein the flexible sealing body (61) is used to seal the curtain wall structure (5), and wherein the negative pressure groove (62) performs vacuum adsorption on the curtain wall structure (5) by vacuum extraction.

8. The pull-out resistance testing device for building curtain wall connection according to claim 7, characterized in that: A first adsorption disk (34) is fixedly mounted on the outside of the pressure airbag (32); a second adsorption disk (63) is arranged inside the shielding cover (6) at a position corresponding to the first adsorption disk (34); the second adsorption disk (63) is connected to the shielding cover (6) via a flexible structure; an electromagnet (35) is fixedly mounted on the inside of the first adsorption disk (34); and an adsorption magnet (64) is fixedly mounted on the inside of the second adsorption disk (63).

9. The pull-out resistance testing device for building curtain wall connection according to claim 8, characterized in that: An active magnet (341) is disposed inside the first adsorption disk (34), an active cavity is disposed inside the first adsorption disk (34), the active magnet (341) is slidably mounted in the active cavity, a positioning column (342) is fixedly connected to the active magnet (341), and a socket corresponding to the positioning column (342) is disposed on the second adsorption disk (63). When the electromagnet (35) is started, the active magnet (341) approaches the electromagnet (35).

10. The pull-out resistance testing device for building curtain wall connection according to claim 9, characterized in that: A limited sliding cavity is provided in the second adsorption disk (63), the adsorption magnet (64) is slidably mounted in the limited sliding cavity, a locking pin (631) is slidably mounted at a position corresponding to the insertion hole in the second adsorption disk (63), a slot adapted to the locking pin (631) is provided on the positioning column (342), an inclined surface (641) is provided at a position of the adsorption magnet (64) corresponding to the locking pin (631), and one end of the locking pin (631) is slidably matched with the inclined surface (641).

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