External hanging curtain wall pulling resistance testing device

Abstract

The invention relates to the technical field of external curtain wall detection, in particular to an external curtain wall pulling resistance testing device which comprises a base, fixing rods are arranged on the front side and the rear side of the upper end of the base, the upper ends of the fixing rods are slidably connected with sliding holes correspondingly formed in the lower end of a placement table, and a pressure detector is arranged in the middle of the upper end of the base. A probe arranged at the upper end of the pressure detector makes contact with the lower end of the containing table, a mounting plate is arranged at the upper end of the base, a transverse plate is arranged at the lower end of the mounting plate, and a punching head is arranged in the middle of the lower end of the transverse plate. The driving mechanism comprises a mounting groove and a transmission plate. According to the device for testing the pulling resistance of the externally-hung curtain wall, the pressure applied to the externally-hung curtain wall can be accurately controlled, the safety of operators and equipment is protected, the stress of the externally-hung curtain wall is more uniform in the pulling resistance testing process, and the problem that the externally-hung curtain wall is deformed or damaged due to the fact that local stress is too large is solved.

Description

Technical Field

[0001] The invention relates to the technical field of external curtain wall detection, in particular to a pull-out resistance testing device for an external curtain wall. Background Art

[0002] Pull-out resistance refers to the ability of a curtain wall system to resist external forces (such as wind loads, earthquake loads, etc.) in the vertical direction. The pull-out resistance test device is used to measure the stability and safety of the external curtain wall system under the action of these external forces. Through the pull-out resistance test, the ability of the curtain wall system to resist wind or earthquakes in actual use can be evaluated to ensure the safety of the external curtain wall under extreme conditions.

[0003] During the use of the existing external curtain wall pull-out force testing device, a clamp is usually used to fix the external curtain wall first, and then the punch head is driven to move by a jack, so that the punch head applies pressure to the external curtain wall to simulate wind load or earthquake load. The pressure detector is used to measure the size of the applied load. Finally, based on the data obtained from the pull-out test, the pull-out performance of the curtain wall system is analyzed to evaluate its strength and stability.

[0004] During the use of the existing external curtain wall pull-out force testing device, although it can apply pressure through the jack, the adjustment accuracy of the jack is relatively low, especially when a small and stable force needs to be applied, the hydraulic system of the jack may have certain fluctuations, and the jack's adaptability to the environment is relatively poor. There are often problems with the hydraulic system failing due to the influence of temperature on the hydraulic oil. When the external curtain wall is fixed by a clamp, since the clamp usually applies force through a few clamping points, the contact area between the clamp and the external curtain wall is small, it is easy to cause local stress concentration, and finally the external curtain wall will be deformed or damaged due to excessive force. The subsequent external curtain wall pull-out force test will generate debris, dust or liquid leakage during the pull-out force test, which will also cause harm to operators and equipment. For this reason, we propose an external curtain wall pull-out force testing device. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide an external curtain wall pull-out resistance testing device, which can accurately control the pressure applied to the external curtain wall, can work normally in a wide temperature range and under different humidity conditions, prevent the leakage of debris, dust or liquid generated during the external curtain wall pull-out resistance testing process, protect the safety of operators and equipment, make the external curtain wall more evenly stressed during the pull-out resistance testing process, solve the problem of deformation or damage of the external curtain wall caused by excessive local stress, ensure the accuracy of the pull-out resistance test results, and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an external curtain wall pull-out resistance testing device, comprising a base, a fixing rod is arranged on both the front and rear sides of the upper end of the base, the upper ends of the fixing rods are respectively slidably connected with the sliding holes arranged correspondingly at the lower end of the placing table, a pressure detector is arranged in the middle of the upper end of the base, a probe arranged at the upper end of the pressure detector contacts the lower end of the placing table, a mounting plate is arranged at the upper end of the base, a horizontal plate is arranged at the lower end of the mounting plate, a punch head is arranged in the middle of the lower end of the horizontal plate, and also comprises a driving mechanism, a protective mechanism and a fixing mechanism;

[0007] The driving mechanism includes a mounting groove and a transmission plate, wherein the mounting groove is arranged in the middle of the top wall of the mounting plate, and the transmission plate is arranged inside the mounting groove, and the lower end of the transmission plate contacts the upper end of the horizontal plate;

[0008] The protection mechanism is arranged at the upper end of the base;

[0009] The fixing mechanism is arranged inside the placing table, and can accurately control the pressure applied to the external curtain wall. It can work normally in a wide temperature range and under different humidity conditions, prevent the leakage of debris, dust or liquid generated during the pull-out test of the external curtain wall, protect the safety of operators and equipment, and make the external curtain wall more evenly stressed during the pull-out test, thus solving the problem of deformation or damage of the external curtain wall caused by excessive local stress and ensuring the accuracy of the pull-out test results.

[0010] Furthermore, it also includes a single-chip microcomputer, which is arranged at the right end of the mounting plate, the signal controlled end of the single-chip microcomputer is electrically connected to the external power supply, and the pressure detector is bidirectionally electrically connected to the single-chip microcomputer, so as to be able to regulate the electrical components inside the equipment.

[0011] Furthermore, the driving mechanism also includes a mounting rod, a worm and a worm wheel. The mounting rod is rotatably connected to the right side inside the mounting groove, a transmission plate is fixedly connected to the middle part of the outer arc surface of the mounting rod, the worm wheel is arranged on the rear side of the outer arc surface of the mounting rod, the worm is rotatably connected to the rear side of the right wall of the mounting groove, and the worm is meshingly connected with the worm wheel, so as to drive the transmission plate to rotate.

[0012] Furthermore, the driving mechanism also includes a driving motor, which is arranged on the rear side of the right end of the mounting plate, the left end of the driving motor output shaft is fixedly connected to the right end of the worm, and the signal controlled end of the driving motor is electrically connected to the signal control end of the single-chip computer, so that the worm wheel can be driven to rotate through the worm.

[0013] Further, the protection mechanism includes a fixing plate, a mounting frame, a protective cover, a guiding sliding column, a connecting plate and toughened glass. The fixing plates are respectively arranged at the left and right ends of the cross plate. At one end of each fixing plate away from the center inside the base, a mounting frame is provided. The protective cover is located above the base. Connecting grooves are respectively arranged on the front and rear sides of the left and right walls of the protective cover. The guiding sliding columns are all arranged inside the connecting grooves. The middle parts of the outer arc surfaces of the guiding sliding columns are all slidably connected with the connecting plates. One end of two longitudinally adjacent connecting plates close to the center inside the base is fixedly connected with one end of a mounting frame away from the center inside the base. The toughened glass is arranged above the front end of the protective cover to prevent debris, dust or liquid leakage during the anti-pulling force test of the external wall curtain, and protect the safety of operators and equipment.

[0014] Further, the protection mechanism further includes a return spring. The return springs are respectively arranged between the upper ends of the connecting plates and the top walls of the connecting grooves. The return springs are all sleeved on the outer sides of the upper sides of the guiding sliding columns. During the contraction process of the return springs, a downward thrust will be given to the protective cover, so that the protective cover is closely attached to the base to prevent the protective cover from loosening.

[0015] Further, vertical rods are respectively arranged at the four corners of the upper end of the base. The upper ends of the vertical rods are fixedly connected with the lower end of the mounting plate. Two longitudinally adjacent vertical rods are respectively slidably connected with the avoidance grooves correspondingly arranged at the lower ends of a mounting frame. Springs are respectively arranged between the lower end of the mounting plate and the upper end of the mounting frame. The springs are all sleeved on the outer sides of the upper sides of the vertical rods. The pulling force generated by the contraction of the springs can drive the punching head to move back to its original position through the mounting frame.

[0016] Further, the fixing mechanism includes a cross bar, a vertical plate, a limiting plate, a pushing plate, an adjusting plate, a connecting seat and a vertical column. The cross bars are respectively arranged in the middle of the left and right ends of the placing table. The middle parts of the outer arc surfaces of the cross bars are all slidably connected with the vertical plates. Limiting plates are respectively arranged on the upper sides of one ends of the vertical plates close to the center inside the base. The limiting plates are all located above the placing table. Chute grooves are respectively arranged on the left and right sides of the top wall of the placing table. The lower ends of the two vertical plates are respectively slidably connected with the vertically adjacent chute grooves. Connecting seats are respectively arranged on the lower sides of one ends of the vertical plates close to the center inside the base. Vertical columns are arranged at the upper ends of the connecting seats. The pushing plate is slidably connected with the top wall of the placing table. Adjusting plates are respectively arranged on the left and right sides of the rear end of the pushing plate. Limiting grooves are respectively arranged in the middle of the upper ends of the adjusting plates. The upper ends of the vertical columns are respectively located inside the vertically adjacent limiting grooves, and can limit and fix the external wall curtain.

[0017] Further, the fixing mechanism further includes a screw rod. The screw rod is rotatably connected to the lower side of the rear wall of the placing table. The pushing plate is threadedly connected to the front side of the outer arc surface of the screw rod through the middle part arranged at its front end, and can drive the adjusting plate to move through the pushing plate.

[0018] Furthermore, a servo motor is provided on the lower side of the front end of the placement table, the rear end of the servo motor output shaft is fixedly connected to the front end of the screw output shaft, the signal controlled end of the servo motor is electrically connected to the signal control end of the single chip microcomputer, and the push plate can be driven to move through the screw.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Through the coordinated setting of the worm structure and the transmission plate, the pressure applied to the external curtain wall can be accurately controlled, and it can work normally in a wide temperature range and under different humidity conditions, solving the problem of jack failure caused by environmental factors, and further improving the adaptability of the external curtain wall pull-out force test device to the environment.

[0021] 2. The protective cover can cover the placement table to prevent the leakage of debris, dust or liquid generated during the pull-out test of the external curtain wall, and protect the safety of operators and equipment. The protective cover fits tightly to the base and will not loosen or shift during use, further improving the protection effect.

[0022] 3. The use of limiting plates to limit and fix the external curtain wall can increase the contact area between the fixed components and the external curtain wall, avoid local stress concentration, and make the external curtain wall more evenly stressed during the pull-out test. This solves the problem of deformation or damage of the external curtain wall caused by excessive local stress and ensures the accuracy of the pull-out test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper side of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the front side cross-sectional plan structure of the present invention;

[0027] Figure 5 This is an enlarged structural schematic diagram of location A of the present invention;

[0028] Figure 6 It is a schematic diagram of the enlarged structure of point B of the present invention.

[0029] In the figure: 1 - base, 2 - fixing rod, 3 - placing table, 4 - pressure detector, 5 - vertical rod, 6 - mounting plate, 7 - driving mechanism, 71 - mounting groove, 72 - mounting rod, 73 - transmission plate, 74 - worm, 75 - driving motor, 76 - worm gear, 8 - protection mechanism, 81 - fixing plate, 82 - mounting frame, 83 - protective cover, 84 - guiding slide post, 85 - connecting plate, 86 - return spring, 87 - toughened glass, 9 - fixing mechanism, 91 - cross bar, 92 - vertical plate, 93 - limiting plate, 94 - pushing plate, 95 - adjusting plate, 96 - connecting seat, 97 - column, 98 - screw rod, 10 - servo motor, 11 - single-chip microcomputer, 12 - spring, 13 - cross plate, 14 - stamping head. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-6 , this embodiment provides an external wall curtain wall uplift force test device, including a base 1. Fixing rods 2 are arranged on the front and rear sides of the upper end of the base 1. The upper ends of the fixing rods 2 are respectively slidably connected to the sliding holes correspondingly arranged at the lower end of the placing table 3. A pressure detector 4 is arranged in the middle of the upper end of the base 1. The probe arranged at the upper end of the pressure detector 4 is in contact with the lower end of the placing table 3. A mounting plate 6 is arranged at the upper end of the base 1. A single-chip microcomputer 11 is arranged at the right end of the mounting plate 6. The pressure detector 4 is electrically connected to the single-chip microcomputer 11 in a two-way manner. A cross plate 13 is arranged at the lower end of the mounting plate 6. A stamping head 14 is arranged in the middle of the lower end of the cross plate 13. It also includes a driving mechanism 7, a protection mechanism 8 and a fixing mechanism 9.

[0032] The driving mechanism 7 includes an installation groove 71 and a transmission plate 73. The installation groove 71 is arranged in the middle of the top wall of the installation plate 6. The transmission plate 73 is arranged inside the installation groove 71. The lower end of the transmission plate 73 contacts the upper end of the cross plate 13. The driving mechanism 7 further includes an installation rod 72, a worm 74 and a worm gear 76. The installation rod 72 is rotatably connected to the right side inside the installation groove 71. The middle of the outer arc surface of the installation rod 72 is fixedly connected with the transmission plate 73. The worm gear 76 is arranged at the rear side of the outer arc surface of the installation rod 72. The worm 74 is rotatably connected to the rear side of the right wall of the installation groove 71. The worm 74 is meshed and connected with the worm gear 76. The driving mechanism 7 further includes a driving motor 75. The driving motor 75 is arranged at the rear side of the right end of the installation plate 6. The left end of the output shaft of the driving motor 75 is fixedly connected with the right end of the worm 74. The signal control end of the driving motor 75 is electrically connected with the signal control end of the single-chip microcomputer 11. Through the cooperative setting of the worm structure and the transmission plate 73, the magnitude of the pressure applied to the external wall curtain can be controlled very precisely, and it can work normally in a relatively wide temperature range and different humidity conditions, solving the problem that the jack fails due to environmental factors, and further improving the environmental adaptability of the external wall curtain uplift force test device.

[0033] The protection mechanism 8 is arranged at the upper end of the base 1. The protection mechanism 8 includes a fixing plate 81, an installation frame 82, a protective cover 83, a guiding sliding column 84, a connecting plate 85 and a toughened glass 87. The fixing plates 81 are respectively arranged at the left and right ends of the cross plate 13. One end of each fixing plate 81 far away from the center inside the base 1 is provided with an installation frame 82. The protective cover 83 is located above the base 1. Connecting grooves are respectively arranged on the front and rear sides of the left and right walls of the protective cover 83. The guiding sliding columns 84 are all arranged inside the connecting grooves. The middle of the outer arc surface of each guiding sliding column 84 is slidably connected with a connecting plate 85. One end of two longitudinally adjacent connecting plates 85 close to the center inside the base 1 is fixedly connected with one end of an installation frame 82 far away from the center inside the base 1. The toughened glass 87 is arranged on the upper side of the front end of the protective cover 83. The protection mechanism 8 further includes a return spring 86. The return springs 86 are respectively arranged between the upper ends of the connecting plates 85 and the top walls of the connecting grooves. The return springs 86 are all sleeved on the outer sides of the upper sides of the guiding sliding columns 84. The protective cover 83 can cover the placing table 3, preventing debris, dust or liquid leakage generated during the external wall curtain uplift force test, protecting the safety of the operators and equipment. The protective cover 83 fits tightly with the base 1 and will not loosen or shift during use, further improving the protection effect.

[0034] The fixing mechanism 9 is arranged inside the placing table 3. The fixing mechanism 9 includes a cross bar 91, vertical plates 92, limiting plates 93, a pushing plate 94, an adjusting plate 95, a connecting seat 96 and columns 97. The cross bar 91 is respectively arranged in the middle of the left and right ends of the placing table 3. The middle parts of the outer arc surfaces of the cross bar 91 are both slidably connected with the vertical plates 92. The upper sides of the ends of the vertical plates 92 close to the center inside the base 1 are both provided with limiting plates 93. The limiting plates 93 are both located above the placing table 3. Slide grooves are arranged on the left and right sides of the top wall of the placing table 3. The lower ends of the two vertical plates 92 are respectively slidably connected with the vertically adjacent slide grooves. The lower sides of the ends of the vertical plates 92 close to the center inside the base 1 are both provided with connecting seats 96. Columns 97 are arranged at the upper ends of the connecting seats 96. The pushing plate 94 is slidably connected with the top wall of the placing table 3. The left and right sides of the rear end of the pushing plate 94 are both provided with adjusting plates 95. Limiting grooves are arranged in the middle of the upper ends of the adjusting plates 95. The upper ends of the columns 97 are respectively located inside the vertically adjacent limiting grooves. The fixing mechanism 9 further includes a screw rod 98. The screw rod 98 is rotatably connected to the lower side of the rear wall of the placing table 3. The pushing plate 94 is threadedly connected to the front side of the outer arc surface of the screw rod 98 through the middle part arranged at its front end. The hanging curtain wall is limited and fixed through the limiting plates 93, which can increase the contact area between the fixing component and the hanging curtain wall, avoid local stress concentration, make the hanging curtain wall more evenly stressed during the uplift force test, solve the problem of deformation or damage of the hanging curtain wall caused by excessive local force, and ensure the accuracy of the uplift force test result.

[0035] As a preferred embodiment of this embodiment, vertical rods 5 are respectively arranged at the four corners of the upper end of the base 1. The upper ends of the vertical rods 5 are fixedly connected to the lower end of the mounting plate 6. The vertically adjacent two vertical rods 5 are respectively slidably connected with the avoidance grooves arranged at the lower end of a mounting frame 82. Springs 12 are respectively arranged between the lower end of the mounting plate 6 and the upper end of the mounting frame 82. The springs 12 are all sleeved on the outside of the upper sides of the vertical rods 5. The pulling force generated by the contraction of the springs 12 can drive the punching head 14 to move and reset through the mounting frame 82.

[0036] As a preferred embodiment of this embodiment, a servo motor 10 is arranged at the lower side of the front end of the placing table 3. The rear end of the output shaft of the servo motor 10 is fixedly connected to the front end of the output shaft of the screw rod 98. The signal controlled end of the servo motor 10 is electrically connected to the signal control end of the single-chip microcomputer 11. Through the regulation of the single-chip microcomputer 11, the servo motor 10 starts to operate. The output shaft of the servo motor 10 drives the screw rod 98 to rotate. During the rotation of the screw rod 98, it will drive the pushing plate 94 to move backward through threaded connection.

[0037] The working principle of the hanging curtain wall uplift force test device provided by the present invention is as follows:

[0038] When the external wall curtain wall uplift force test device is in use, first place the external wall curtain wall to be tested for uplift force on the upper end of the placement table 3. Then, through the regulation of the single-chip microcomputer 11, the servo motor 10 starts to operate. The output shaft of the servo motor 10 drives the screw rod 98 to rotate. During the rotation of the screw rod 98, it drives the push plate 94 to move backward through threaded connection. At this time, the column 97 slides and rotates relative to the limiting groove inside the limiting groove, so that the adjusting plate 95 drives the connecting seat 96 to move through the column 97. The connecting seat 96 drives the limiting plate 93 to move along the cross bar 91 through the vertical plate 92. At this time, the distance between the two limiting plates 93 gradually decreases, and finally the limiting plate 93 limits and fixes the external wall curtain wall. Then, the pressure detector 4 weighs and records the weights of the placement table 3, the fixing mechanism 9, and the external wall curtain wall. After that, through the regulation of the single-chip microcomputer 11, the driving motor 75 starts to operate. The output shaft of the driving motor 75 drives the worm 74 to rotate. During the rotation of the worm 74, it drives the worm wheel 76 to rotate through meshing connection. During the rotation of the worm wheel 76, it drives the transmission plate 73 to rotate through the mounting rod 72. During the rotation of the transmission plate 73, it gives a downward pressure to the cross plate 13, so that the cross plate 13 drives the punching head 14 to move downward, and the spring 12 extends. Then, the lower end of the punching head 14 contacts the upper surface of the external wall curtain wall, and then applies pressure to the external wall curtain wall through the punching head 14, thereby simulating wind load or seismic load. During the process of applying pressure, the placement table 3 starts to move downward under the pressure of the punching head 14. The pressure detector 4 detects the pressure received by the external wall curtain wall through the probe, so as to test the uplift force of the external wall curtain wall. The pressure detector 4 can transmit the detected data to the single-chip microcomputer 11 in real time. Then, the operator subtracts the weights of the placement table 3, the fixing mechanism 9, and the external wall curtain wall from the obtained data, and thus can obtain the uplift force of the external wall curtain wall. Finally, according to the calculated data, analyze the uplift performance of the curtain wall system and evaluate its strength and stability. During the movement of the cross plate 13, the cross plate 13 drives the mounting frame 82 to move downward through the fixing plate 81. The mounting frame 82 drives the connecting plate 85 to move downward. The connecting plate 85 drives the protective cover 83 to move downward through the return spring 86, so as to cover the placement table 3. When the lower end of the protective cover 83 contacts the upper end of the base 1, the connecting plate 85 continues to press the return spring 86, and the return spring 86 contracts. During the contraction of the return spring 86, it gives a downward thrust to the protective cover 83, so that the protective cover 83 is tightly attached to the base 1 to prevent the protective cover 83 from loosening.

[0039] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. External wall curtain wall uplift force testing device, including a base (1), fixed rods (2) are arranged on both the front and rear sides of the upper end of the base (1), the upper ends of the fixed rods (2) are respectively slidably connected with sliding holes correspondingly arranged at the lower end of a placement table (3), a pressure detector (4) is arranged in the middle of the upper end of the base (1), a probe arranged at the upper end of the pressure detector (4) is in contact with the lower end of the placement table (3), a mounting plate (6) is arranged at the upper end of the base (1), a cross plate (13) is arranged at the lower end of the mounting plate (6), and a punching head (14) is arranged in the middle of the lower end of the cross plate (13), characterized in that: It also includes a driving mechanism (7), a protection mechanism (8) and a fixing mechanism (9); The driving mechanism (7) includes an installation groove (71) and a transmission plate (73). The installation groove (71) is arranged in the middle of the top wall of the installation plate (6). A transmission plate (73) is arranged inside the installation groove (71), and the lower end of the transmission plate (73) contacts the upper end of the cross plate (13); The protection mechanism (8) is arranged at the upper end of the base (1); The fixing mechanism (9) is arranged inside the placing table (3).

2. The external wall curtain wall uplift force testing device according to claim 1, wherein: It also includes a single-chip microcomputer (11). The single-chip microcomputer (11) is arranged at the right end of the installation plate (6), and the pressure detector (4) is electrically connected to the single-chip microcomputer (11) in a two-way manner.

3. The external wall curtain wall uplift force testing device according to claim 2, characterized in that: The driving mechanism (7) also includes an installation rod (72), a worm (74) and a worm gear (76). The installation rod (72) is rotatably connected to the right side inside the installation groove (71). The middle of the outer arc surface of the installation rod (72) is fixedly connected with a transmission plate (73). The worm gear (76) is arranged at the rear side of the outer arc surface of the installation rod (72). The worm (74) is rotatably connected to the rear side of the right wall of the installation groove (71), and the worm (74) is meshed with the worm gear (76).

4. The external wall curtain wall uplift force test device according to claim 3, characterized in that: The driving mechanism (7) also includes a driving motor (75). The driving motor (75) is arranged at the rear side of the right end of the installation plate (6). The left end of the output shaft of the driving motor (75) is fixedly connected with the right end of the worm (74), and the signal control end of the driving motor (75) is electrically connected to the signal control end of the single-chip microcomputer (11).

5. The external wall curtain wall uplift force testing device according to claim 1, characterized in that: The protection mechanism (8) includes a fixing plate (81), an installation frame (82), a protective cover (83), a guiding sliding column (84), a connecting plate (85) and a toughened glass (87). The fixing plates (81) are respectively arranged at the left and right ends of the cross plate (13). Installation frames (82) are arranged at the ends of the fixing plates (81) far away from the center inside the base (1). The protective cover (83) is located above the base (1). Connecting grooves are respectively arranged at the front and rear sides of the left and right walls of the protective cover (83). Guiding sliding columns (84) are arranged inside the connecting grooves. The middle of the outer arc surface of the guiding sliding columns (84) is slidably connected with a connecting plate (85). The ends of two longitudinally adjacent connecting plates (85) close to the center inside the base (1) are fixedly connected with the ends of an installation frame (82) far away from the center inside the base (1). The toughened glass (87) is arranged at the upper side of the front end of the protective cover (83).

6. The external wall curtain wall uplift force testing device according to claim 5, characterized in that: The protection mechanism (8) also includes a return spring (86). The return springs (86) are respectively arranged between the upper ends of the connecting plates (85) and the top walls of the connecting grooves, and the return springs (86) are sleeved on the outer sides of the upper sides of the guiding sliding columns (84).

7. The external wall curtain wall uplift force testing device according to claim 5, characterized in that: Vertical rods (5) are respectively arranged at the four corners of the upper end of the base (1). The upper ends of the vertical rods (5) are fixedly connected with the lower end of the installation plate (6). The two longitudinally adjacent vertical rods (5) are respectively slidably connected with the avoidance grooves arranged corresponding to the lower ends of an installation frame (82). Springs (12) are respectively arranged between the lower end of the installation plate (6) and the upper end of the installation frame (82), and the springs (12) are sleeved on the outer sides of the upper sides of the vertical rods (5).

8. The external wall curtain wall uplift force test device according to claim 2, characterized in that: The fixing mechanism (9) includes a cross bar (91), vertical plates (92), limiting plates (93), a pushing plate (94), adjusting plates (95), connecting seats (96) and columns (97). The cross bar (91) is respectively arranged in the middle of the left and right ends of the placing table (3). Vertical plates (92) are slidably connected to the middle of the outer arc surfaces of the cross bar (91). Limiting plates (93) are arranged on the upper sides of the ends of the vertical plates (92) close to the center inside the base (1). The limiting plates (93) are all located above the placing table (3). Chutes are arranged on the left and right sides of the top wall of the placing table (3). The lower ends of the two vertical plates (92) are respectively slidably connected to the vertically adjacent chutes. Connecting seats (96) are arranged on the lower sides of the ends of the vertical plates (92) close to the center inside the base (1). Columns (97) are arranged on the upper ends of the connecting seats (96). The pushing plate (94) is slidably connected to the top wall of the placing table (3). Adjusting plates (95) are arranged on the left and right sides of the rear end of the pushing plate (94). Limiting grooves are arranged in the middle of the upper ends of the adjusting plates (95). The upper ends of the columns (97) are respectively located inside the vertically adjacent limiting grooves.

9. The external wall curtain wall uplift force test device according to claim 8, characterized in that: The fixing mechanism (9) further includes a screw rod (98). The screw rod (98) is rotatably connected to the lower side of the rear wall of the placing table (3). The pushing plate (94) is threadedly connected to the front side of the outer arc surface of the screw rod (98) through the middle of its front end.

10. The external wall curtain wall uplift force test device according to claim 9, characterized in that: A servo motor (10) is arranged on the lower side of the front end of the placing table (3). The rear end of the output shaft of the servo motor (10) is fixedly connected to the front end of the output shaft of the screw rod (98). The signal controlled end of the servo motor (10) is electrically connected to the signal control end of the single-chip microcomputer (11).

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