Self-locking balance type glass curtain wall bearing performance detection device and monitoring system

Abstract

The utility model relates to a self-locking balance type glass curtain wall bearing performance detection device and a monitoring system. The self-locking balance type glass curtain wall bearing performance detection device comprises a first balance frame; a transmission assembly is arranged on the first balancing frame; the transmission assembly drives the transmission rod to move close to or away from the first balance frame. The side, away from the first balancing frame, of the transmission rod is connected with a second balancing frame. The second balancing frame is connected with a first connecting rod for applying load to the glass curtain wall; a self-locking clamp connected with a keel on the side of the glass curtain wall is arranged at the end part of the first balancing frame; at least one first connecting rod is provided with a first limiting piece and another pre-tightening device which are arranged on the two sides of the second balancing frame respectively. Load is applied in a pulling force mode, force application stability is guaranteed, and the problem that equipment is prone to instability under the action of pushing force is solved. And bending stress can be avoided through cooperation of the pre-tightening device, so that the first connecting rod and the second connecting rod are only subjected to axial force.

Description

Technical Field

[0001] The utility model relates to the field of glass curtain wall detection, in particular to a self-locking balance type glass curtain wall bearing performance detection device and a monitoring system. Background Art

[0002] Glass curtain walls are widely used in the external decoration projects of urban buildings. Over time, the aging of the structural glue of the glass curtain wall and the loosening of the fasteners of the semi-hidden frame glass curtain wall have caused frequent occurrence of high-altitude falling and injury incidents of the curtain wall. The state has also paid more and more attention to the safety issues of the curtain wall.

[0003] The patent document of the glass curtain wall connection strength on-site detector with the patent publication number of CN103091172A discloses a device for testing the connection strength of the glass curtain wall. The glass curtain wall is pressurized through a reaction frame and a push rod, and the bearing strength is measured through a pressure gauge. However, the installation and use process of the above equipment is relatively cumbersome. During the process of applying the load, the deformation of the cross-link will cause pulling on the aluminum alloy column or beam frame, that is, the deformation of the cross-link during the application of the load cannot be automatically adjusted, and this pulling will cause uneven stress at the connection between the bayonet fixing seat and the aluminum alloy column or beam frame, resulting in the inclination of the load that should be perpendicular to the surface of the glass curtain wall. At the same time, the force application device in this patent is a hydraulic jack for applying the load by thrust. In the case of the inclination of the applied load direction combined with the application of the load by thrust, the problem of equipment instability may occur. In addition, the inclination of the applied load direction is not conducive to accurately monitoring the deformation amount of the glass curtain wall.

[0004] In addition, the curtain wall glass bears an outward pushing load. When the silicone structural glue between the glass and the keel is cracked, the glass has a risk of high-altitude falling, posing a safety hazard to the flow of people in the corresponding area downstairs. Therefore, if the initial cracking of the silicone structural glue can be monitored, the loading can be stopped in time or the loading value can be reduced according to needs to prevent the further expansion of the cracked state and avoid the high-altitude falling risk of the glass, which can effectively ensure the safety of the detection. Content of the Utility Model

[0005] In order to solve the above problems of the prior art, the utility model provides a self-locking balance type glass curtain wall bearing performance detection device and a monitoring system.

[0006] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0007] A self-locking balanced glass curtain wall bearing performance detection device comprises a first balancing frame; a transmission assembly is arranged on the first balancing frame; the transmission assembly drives a transmission rod to move close to or away from the first balancing frame; a second balancing frame is connected to the side of the transmission rod away from the first balancing frame; a first connecting rod for applying a load to the glass curtain wall is connected to the second balancing frame; a self-locking clamp connected to a keel on the side of the glass curtain wall is arranged at the end of the first balancing frame; when the transmission assembly moves the second balancing frame toward the first balancing frame through the transmission rod, the second balancing frame applies a load to the glass curtain wall through the first connecting rod The self-locking clamp further clamps the keel under the action of the first balance frame; the self-locking clamp is connected to the first balance frame through a second connecting rod; at least one of the second connecting rods is provided with a second limit member and a pre-tightening device which are respectively arranged on both sides of the first balance frame; at least one of the first connecting rods is provided with a first limit member and another pre-tightening device which are respectively arranged on both sides of the second balance frame; the pre-tightening device includes a plurality of abutting portions which can apply load to pre-tighten the abutted component; when the abutted component is deformed, the abutting portion follows the displacement of the deformation end face and always abuts against the abutted component to keep the first connecting rod and the second connecting rod only subjected to axial force.

[0008] Furthermore, the transmission assembly includes a motor; the motor drives the transmission rod to move axially through a worm gear assembly.

[0009] Furthermore, the transmission rod is connected to the second balancing frame through a force sensor.

[0010] Furthermore, one end of the force sensor away from the transmission rod is connected to a first lifting ring; the first lifting ring is connected to the second balancing frame through a second lifting ring.

[0011] Furthermore, two self-locking clamps are arranged opposite to each other; the self-locking clamps include clamps arranged opposite to each other for clamping the keel; each of the clamps is rotatably connected to a vertical rod; the middle of the two vertical rods is rotatably connected to a second horizontal rod; the ends of the two vertical rods away from the clamps are each rotatably connected to an oblique rod; the two oblique rods are respectively rotatably connected to the two ends of the first horizontal rod; the first horizontal rod is connected to the second connecting rod; and the second connecting rod is moved under force to achieve control of the spacing between the clamps.

[0012] Furthermore, a pre-tensioning rod is provided between the first horizontal rod and the second horizontal rod; a first spring is sleeved on the pre-tensioning rod so that the clamping plate can pre-tighten the keel; one end of the pre-tensioning rod extends out of the second horizontal rod and is provided with a limit block to prevent the pre-tensioning rod from detaching from the second horizontal rod; the other end of the pre-tensioning rod is fixedly connected to the first horizontal rod.

[0013] Further, the pre-tightening device includes a fixed guide block; several top blocks are arranged below the guide block; several guide rods connected to the top blocks are slidably connected in the guide block; a second spring is sleeved on the part of the guide rod between the guide block and the top block; a limiting part is provided at one end of the guide rod away from the top block to prevent the guide rod from detaching from the guide block; a contact part is provided at the bottom of the top block; the contact part cooperates with the first balance frame and the second balance frame.

[0014] Further, three top blocks are provided; the contact part is any one of a ball, a bearing, a spherical protrusion, and a columnar protrusion.

[0015] Further, the first connecting rod is connected to the glass curtain wall through a suction cup.

[0016] A monitoring system includes the above self-locking balance type glass curtain wall bearing performance detection device and a control module; the detection device is arranged at the center position of the glass curtain wall to apply a load to the glass curtain wall; several monitoring points are provided on the glass curtain wall, and several same-condition points are included in the monitoring points; the same-condition points are two monitoring points arranged symmetrically along the glass central axis; a displacement meter and a strain gauge are provided at the monitoring points; the control module receives and processes the displacement, strain, and load data collected from each monitoring point.

[0017] When the secant tangent value of a certain monitoring point is compared with another monitoring point that forms a same-condition point, and the tangent value of one monitoring point is significantly smaller than that of the other monitoring point, or even drops steeply, this is described as trigger condition 1; when the strain in the direction along the glue of a certain monitoring point near the glue is significantly greater than that of another monitoring point that forms a same-condition point, or the strain in the direction along the glue of the monitoring point is greater than the strain in the direction along the glue of the mid-span section, this is described as trigger condition 2; when trigger condition 1 or trigger condition 2 is satisfied alone, the control module gives an alarm, pauses the load application of the detection device, and manually inspects the abnormal monitoring points; when both trigger condition 1 and trigger condition 2 are satisfied, the control module gives an alarm, pauses the load application of the detection device, and manually inspects the abnormal monitoring points.

[0018] The beneficial effects of the present utility model are:

[0019] 1. By applying the load in the form of tension, the stability of the force application is ensured, and the problem that the equipment is prone to instability under the action of thrust is solved; the suction cup is used to ensure the connection stability with the glass curtain wall during the load application process to avoid sliding.

[0020] 2. The second balance frame applies a load to the glass curtain wall through the first connecting rod. During the process of applying the load, on the one hand, the first balance frame is subjected to the tensile force transmitted by the transmission component, and on the other hand, it is subjected to the pressure transmitted by the second connecting rod to achieve balance. The force exerted by the first balance frame on the second connecting rod drives the self-locking fixture to tightly clamp the keel to achieve balance. The greater the load applied by the transmission component, the tighter the self-locking fixture clamps, realizing self-balancing, effectively reducing the process of fixing the keel in the early stage, and improving the detection efficiency.

[0021] 3. Since the first balance frame and the second balance frame will inevitably deform during the process of applying the load, and their deformation is usually a bending deformation. When the two ends of the second balance frame are fixedly connected to the first connecting rod, the deformation of the second balance frame will cause the first connecting rod to also be subjected to bending stress, resulting in shear force and bending moment on the rod. It is very difficult to apply the load completely perpendicular to the glass curtain wall, which is not conducive to the precise control of the load size. However, through the cooperation of the pre-tightening device, the bending stress can be avoided, so that the first connecting rod and the second connecting rod are only subjected to axial forces, and the loading of the load is more accurate, which not only ensures the overall stability of the equipment, but also meets the displacement required by the balance frame during the installation and load application process of the equipment, and has a self-balancing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 It is the structural diagram of the detection device of the present invention;

[0024] Figure 2 It is the structural diagram of the self-locking fixture of the present invention;

[0025] Figure 3 It is the schematic structural diagram of the pre-tightening device of the present invention;

[0026] Figure 4 It is the schematic diagram of the layout position of the monitoring points of the present invention;

[0027] Figure 5 It is the load-deformation curve of the structural glue of the glass curtain wall of the present invention and the secant tangent value curve of the deformation curve points;

[0028] Figure 6 It is the secant tangent value curve of the load-deformation curve points of different monitoring points of the structural glue of the glass curtain wall of the present invention;

[0029] Figure 7 Schematic diagram of the colloid failure part in the middle of the long side of the glass curtain wall of the present utility model;

[0030] Figure 8 is Figure 7 Stress diagrams of points 2 left, 2 middle, and 2 right corresponding to the vertical colloid direction;

[0031] Figure 9 is Figure 7 Stress diagrams of points 2 left, 2 middle, and 2 right corresponding to the direction along the colloid;

[0032] Figure 10 Schematic diagram of the colloid failure part at the edge of the long side of the glass curtain wall of the present utility model;

[0033] Figure 11 is Figure 10 Stress diagrams of points 2 left, 2 middle, and 2 right corresponding to the direction along the colloid;

[0034] Figure 12 Schematic diagram of the colloid failure part in the middle of the short side of the glass curtain wall of the present utility model;

[0035] Figure 13 is Figure 12 Stress diagrams of points 2 left, 2 middle, and 2 right corresponding to the direction along the colloid;

[0036] Explanation of reference numerals:

[0037] 100, transmission assembly; 110, motor; 120, worm and worm gear assembly; 130, transmission rod; 140, force value sensor; 141, first hanging ring; 142, second hanging ring; 150, first balance frame; 160, second balance frame; 170, first connecting rod; 171, first limiting member; 172, suction cup; 200, self-locking fixture; 210, second connecting rod; 211, second limiting member; 220, clamping plate; 230, vertical rod; 240, inclined rod; 250, first horizontal rod; 260, second horizontal rod; 270, pre-tightening rod; 271, first spring; 272, limiting block; 300, pre-tightening device; 310, guide block; 320, guide rod; 321, limiting portion; 330, top block; 340, second spring; 350, abutting portion; 360, guide block fixing nail; 400, glass curtain wall; 410, keel; 510, displacement gauge; 520, strain gauge. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] Embodiment:

[0042] Such as Figures 1-3As described above, a self-locking balance type glass curtain wall bearing performance detection device includes a first balance frame 150; a transmission assembly 100 is provided on the first balance frame 150; the transmission assembly 100 drives the transmission rod 130 to move closer to or away from the first balance frame 150; that is, the transmission rod 130 moves axially; in one embodiment, the transmission assembly 100 includes a motor 110; the motor 110 drives the transmission rod 130 to move axially through a worm and worm gear assembly 120. In this structure, the transmission rod 130 is equivalent to a lead screw, and the worm gear in the worm and worm gear assembly 120 is sleeved on the transmission rod 130. When the worm gear rotates, it drives the transmission rod 130 to perform a linear motion; in one embodiment, the output shaft of the motor 110 can be directly set as a worm; in one embodiment, the output shaft of the motor 110 can drive the worm and worm gear assembly 120 through a gear set, a sprocket set or a pulley set, which can achieve a deceleration effect and ensure the low-speed and stable movement of the transmission rod 130;

[0043] A second balance frame 160 is connected to the side of the transmission rod 130 away from the first balance frame 150; the first balance frame 150 and the second balance frame 160 are preferably arranged in parallel; a first connecting rod 170 for applying a load to the glass curtain wall 400 is connected to the second balance frame 160; the first connecting rod 170 is connected to the glass curtain wall 400 through a suction cup 172; the transmission assembly 100 pulls the second balance frame 160 towards the glass curtain wall 400 by applying a pulling force, and then converts it into a load applied to the glass curtain wall 400 through the first connecting rod 170; in this embodiment, by using the method of pulling force to apply the load, the stability of the force application is ensured, and the problem that the equipment is prone to instability under the action of thrust is solved; the suction cup 172 is used to ensure the stability of the connection with the glass curtain wall 400 during the load application process and prevent sliding;

[0044] A self-locking clamp 200 connected to the keel 410 on the side of the glass curtain wall 400 is provided at the end of the first balance frame 150; when the transmission assembly 100 moves the second balance frame 160 towards the first balance frame 150 through the transmission rod 130, the second balance frame 160 applies a load to the glass curtain wall 400 through the first connecting rod 170, and the self-locking clamp 200 further clamps the keel 410 under the action of the first balance frame 150; that is, during the process of applying the load by the transmission assembly 100, the first balance frame 150 is on the one hand subjected to the pulling force transmitted by the transmission assembly 100, and on the other hand is subjected to the pressure transmitted by the second connecting rod 210 to achieve balance. The force exerted by the first balance frame 150 on the second connecting rod 210 drives the self-locking clamp 200 to tightly clamp the keel 410 to achieve balance. The greater the load applied by the transmission assembly 100, the tighter the self-locking clamp 200 clamps, realizing self-balancing, effectively reducing the process of fixing the keel 410 in the early stage, and improving the detection efficiency;

[0045] The self-locking fixture 200 is connected to the first balance frame 150 through the second connecting rod 210; a pre-tightening device 300 is provided between the second connecting rod 210 and the first balance frame 150 to achieve a stable connection with the first balance frame 150 while ensuring that the second connecting rod 210 only bears axial force; a pre-tightening device 300 is provided between the first connecting rod 170 and the second balance frame 160 to achieve a stable connection with the second balance frame 160 while ensuring that the first connecting rod 170 only bears axial force; the second connecting rod 210 is provided with a second limiting member 211 and a pre-tightening device 300 respectively arranged on both sides of the first balance frame 150; the first connecting rod 170 is provided with a first limiting member 171 and another pre-tightening device 300 respectively arranged on both sides of the second balance frame 160; the pre-tightening device 300 includes a plurality of abutting portions 350 that can apply a load to pre-tighten the abutted member; the abutting portion 350 follows the displacement of the deformed end face when the abutted member deforms and always abuts against the abutted member to ensure that the first connecting rod 170 and the second connecting rod 210 only receive axial force; in this embodiment, the abutted members are the first balance frame 150 and the second balance frame 160; since the first balance frame 150 and the second balance frame 160 will inevitably deform during the loading process, and their deformation is usually a bending deformation. When the two ends of the second balance frame 160 are fixedly connected to the first connecting rod 170, the deformation of the second balance frame 160 will cause the first connecting rod 170 to also receive a bending force, resulting in shear force and bending moment on the rod, making it difficult to apply the load completely perpendicular to the glass curtain wall 400, which is not conducive to the precise control of the load magnitude; while through the cooperation of the pre-tightening device 300, the bending force can be avoided, so that the first connecting rod 170 and the second connecting rod 210 only receive axial force, the loading of the load is more accurate, which not only ensures the overall stability of the equipment, but also meets the displacement required by the balance frame during the installation and load application process of the equipment, and has a self-balancing effect;

[0046] In one embodiment, the transmission rod 130 is connected to the second balance frame 160 through a force sensor 140; in one embodiment, a first lifting ring 141 is connected to the end of the force sensor 140 away from the transmission rod 130; the first lifting ring 141 is connected to the second balance frame 160 through a second lifting ring 142; using two lifting rings for connection can facilitate disassembly and assembly. At the same time, during the loading process, the balance point can be automatically found, which is convenient to use; the force sensor 140 is used to monitor the magnitude of the applied load in real time;

[0047] In one embodiment, two self-locking clamps 200 are oppositely arranged; the self-locking clamp 200 includes clamping plates 220 oppositely arranged for clamping the keel 410; each of the clamping plates 220 is rotatably connected with a vertical rod 230; the middle parts of the two vertical rods 230 are rotatably connected with a second horizontal rod 260; one end of each of the two vertical rods 230 far from the clamping plate 220 is rotatably connected with an inclined rod 240; the two inclined rods 240 are respectively rotatably connected at both ends of the first horizontal rod 250; the first horizontal rod 250 is connected with the second connecting rod 210; when the second connecting rod 210 moves under force, the distance between the clamping plates 220 is controlled; as Figure 1 shown, when the second connecting rod 210 moves downward, it drives the first horizontal rod 250 to move downward. During the rotation of the inclined rod 240, the distance between the lower ends of the vertical rods 230 will be increased, so that the vertical rods 230 rotate around the connection with the second horizontal rod 260, and the clamping plates 220 move towards each other, thereby clamping the keel 410; when the second connecting rod 210 moves upward, the movement process is opposite, and the clamping plates 220 loosen the keel 410, which is convenient for disassembly;

[0048] In one embodiment, a pre-tightening rod 270 is arranged between the first horizontal rod 250 and the second horizontal rod 260; a first spring 271 is sleeved on the pre-tightening rod 270 so that the clamping plates 220 can pre-clamp the keel 410; one end of the pre-tightening rod 270 extends out of the second horizontal rod 260 and is provided with a limiting block 272 to prevent the pre-tightening rod 270 from detaching from the second horizontal rod 260; the other end of the pre-tightening rod 270 is fixedly connected with the first horizontal rod 250; the first spring 271 is usually set to be always in a compressed state, so that the distance between the clamping plates 220 at rest is smaller than the width of the keel 410, and when the clamping plates 220 are installed on the keel 410, the keel 410 can be pre-clamped; in one embodiment, the first spring 271 can also be directly arranged between the first horizontal rod 250 and the second horizontal rod 260, and the pre-tightening effect can also be achieved;

[0049] In one embodiment, the pre-tightening device 300 includes a fixedly arranged guide block 310; several jack blocks 330 are arranged below the guide block 310; several guide rods 320 connected to the jack blocks 330 are slidably connected in the guide block 310; a second spring 340 is sleeved on a part of the guide rod 320 between the guide block 310 and the jack block 330; a limiting part 321 is arranged at one end of the guide rod 320 away from the jack block 330 to prevent the guide rod 320 from detaching from the guide block 310; a contact part 350 is arranged at the bottom of the jack block 330; the contact part 350 cooperates with the first balance frame 150 and the second balance frame 160; three jack blocks 330 are arranged; the contact part 350 is any one of a ball, a bearing, a spherical protrusion, and a columnar protrusion; in one embodiment, the guide block 310 can be directly connected to the jack block 330 through the second spring 340; the guide block 310 is fixedly connected to the first connecting rod 170 through a guide block fixing nail 360, or fixedly connected to the first connecting rod 170 through a bolt, or welded to the first connecting rod 170; similarly, the guide block 310 is fixedly connected to the second connecting rod 210 through a guide block fixing nail 360, or fixedly connected to the second connecting rod 210 through a bolt, or welded to the second connecting rod 210;

[0050] In one embodiment, two first connecting rods 170 are arranged, symmetrically arranged on both sides of the transmission rod 130, and two self-locking clamps 200 are also arranged, connected to both ends of the first balance frame 150; the transmission assembly 100 is arranged on one side of the first balance frame 150 close to the glass curtain wall 400; the first connecting rod 170 is sleeved on the first balance frame 150, that is, the first balance frame 150 penetrates through the first connecting rod 170, and the through hole on the first connecting rod 170 only contacts the first balance frame 150 without transmitting pressure or tension; refer to Figure 1 , when the transmission assembly 100 works to drive the transmission rod 130 to move upward, the transmission rod 130 drives the second balance frame 160 to move upward, and the second balance frame 160 drives the first connecting rod 170 to apply a load to the glass curtain wall 400 under the action of the first limiting member 171; at the same time, the first balance frame 150 is stressed and moves downward, and the first balance frame 150 drives the second connecting rod 210 to move downward under the action of the second limiting member 211, and the downward movement of the second connecting rod 210 makes the self-locking clamp 200 further clamp the keel 410, so that the entire detection device achieves dynamic balance and can stably apply a load to the glass curtain wall 400;

[0051] During the working process, the first limiting member 171 and the second limiting member 211 are preferably limited by a screw or a cylindrical member. Or it can be understood that the part where the first limiting member 171 abuts against the second balance frame 160 is a low-friction part, and the shape of this low-friction part can be arc-shaped. For example, the first limiting member 171 cooperates with the pre-tightening device 300 located below the second balance frame 160 to clamp the second balance frame 160. However, the first limiting member 171 is the main force-bearing point, and the pre-tightening device 300 provides a pre-tightening force to prevent the second balance frame 160 from moving randomly. At the same time, during the application of the load, when the second balance frame 160 undergoes a bending deformation, under the action of the first limiting member 171 and the pre-tightening device 300, it can slide slightly relative to the first limiting member 171, so that the first connecting rod 170 is only subjected to an axial force. Since the pre-tightening device 300 is provided with a plurality of abutting parts 350, when the second balance frame 160 is stressed and deformed, the abutting parts 350 can always abut against the bent end face and will not force the second balance frame 160 to apply a bending force to the first connecting rod 170 (it means that the direction of the force does not coincide with the axis of the first connecting rod 170).

[0052] In one embodiment, the first limiting member 171 can also be a limiting member of any other shape. The function of the first limiting member 171 is to limit the second balance frame 160 by abutting, so as to transmit the force to the first connecting rod 170. When the first limiting member 171 is a cylindrical structure, the contact between the first limiting member 171 and the second balance frame 160 is a line contact, which can facilitate the second balance frame 160 to slide relative to the first limiting member 171 more easily when deforming. When the first limiting member 171 is other structures, such as a square or other geometric shapes, the contact between the first limiting member 171 and the second balance frame 160 is a surface contact, and it is not easy for the first limiting member 171 and the second balance frame 160 to slide relative to each other. Therefore, one of the first limiting members 171 can be set as a cylinder, and the other can be set as a square. When the second balance frame 160 is stressed and deformed, the second balance frame 160 slides relative to the cylindrical first limiting member 171 to offset the displacement caused by the bending deformation, and the other side acts as a rotation point. Therefore, in another embodiment, one of the first connecting rods 170 can be rotatably connected to the second balance frame 160, and the other first connecting rod 170 is connected to the second balance frame 160 through the first limiting member 171 and the pre-tightening device 300.

[0053] Similarly, the first balance frame 150 and the second connecting rod 210 can be connected through the second limiting member 211 and the pre-tightening device 300. The second limiting members 211 can all be set as cylinders, or one can be set as a cylinder and the other as a square, or one end of the first balance frame 150 is rotatably connected to the second connecting member, and the other end is connected to another second connecting rod 210 through the second limiting member 211 and the pre-tightening device 300.

[0054] Through the cooperation of the first limiting member 171 and the pre-tightening device 300, the cooperation between the second limiting member 211 and the pre-tightening device 300 can also achieve the effect of automatic centering and returning to the position; since the end of the first connecting rod 170 is connected to the glass curtain wall 400 through the suction cup 172; usually, it is very difficult to always ensure that the first connecting rod 170 is perpendicular to the glass curtain wall 400 during the installation process. In the structure of the present utility model, since the second balance frame 160 can slide relative to the first limiting member 171 and the pre-tightening device 300, and during the force application process, the first connecting rod 170 will actively move towards the position where the force is balanced, that is, the direction perpendicular to the glass curtain wall 400, thus achieving the effect of automatic centering and returning to the position, and reducing the installation and positioning difficulty; the same applies to the first balance frame 150 and the second limiting member 211;

[0055] In one embodiment, pre-tightening devices 300 are provided on the first connecting rod 170 on both sides of the first balance frame 150. Through the pre-tightening devices 300, the installation is convenient and the random sliding between the first balance frame 150 and the first connecting rod 170 is avoided.

[0056] A monitoring system includes the above-mentioned self-locking balance type glass curtain wall bearing performance detection device and a control module; the detection device is arranged at the central position of the glass curtain wall 400 to apply a load to the glass curtain wall 400; a plurality of monitoring points are provided on the glass curtain wall 400, and the monitoring points include a plurality of same-condition points; the same-condition points are two monitoring points arranged symmetrically along the glass central axis; displacement gauges 510 and strain gauges 520 are provided at the monitoring points; the control module receives and processes the displacement, strain, and load data of each monitoring point collected;

[0057] When the secant tangent value of a certain monitoring point is compared with another monitoring point that constitutes the same-condition point, and the tangent value of one monitoring point is significantly smaller than that of the other monitoring point, or even drops steeply, this is described as trigger condition 1;

[0058] When the strain in the direction along the glue of a certain monitoring point near the glue is significantly greater than the strain of another monitoring point that constitutes the same-condition point, or the strain in the direction along the glue of the monitoring point is greater than the strain in the direction along the glue of the mid-span section, this is described as trigger condition 2;

[0059] When trigger condition 1 or trigger condition 2 is satisfied alone, the control module gives an alarm, pauses the load application of the detection device, and manually inspects the situation of the abnormal monitoring point;

[0060] When both trigger condition 1 and trigger condition 2 are satisfied simultaneously, the control module gives an alarm, pauses the load application of the detection device, and manually inspects the situation of the abnormal monitoring point.

[0061] See Figure 4, Point 1 left and Point 1 right, Point 2 left and Point 2 right, Point 3 left and Point 3 right belong to the same-condition points with the same boundary conditions.

[0062] Point 1 middle and Point 3 middle belong to the same-condition points with the same boundary conditions;

[0063] Point 4 upper and Point 4 lower belong to the same-condition points with the same boundary conditions;

[0064] Usually, a displacement gauge 510 is set at one monitoring point, but multiple strain gauges 520 can be set; for example, two mutually perpendicular strain gauges 520 are set at Point 3 left. Among them, the horizontally set strain gauge 520 is used to monitor the stress in the direction perpendicular to the glue, and the vertically set strain gauge 520 is used to monitor the stress in the direction along the glue. The "glue" refers to the structural glue between the glass curtain wall and the keel;

[0065] According to the formula of material mechanics, the tensile deformation of the structural glue is:

[0066]

[0067] Where: Δl represents the elongation of the structural glue under the load operation; N represents the load; l represents the thickness of the structural glue; E represents the elastic modulus of the structural glue; A represents the area of the structural glue;

[0068] It can be seen that the tensile deformation of the structural glue is proportional to the load and the glue thickness, and inversely proportional to the elastic modulus of the glue and the area of the glue; when the load, glue thickness, elastic modulus of the glue, and area of the glue are the same, the deformations of the same-condition points are approximately the same;

[0069] See Figure 5 , According to the load-deformation curve of the structural glue, it shows that in the initial stage of loading, the glue is in an elastic state, and the load-deformation is in a linear relationship. As the load further increases, the colloid gradually enters the plastic state. At this time, the slope of the load-deformation curve gradually decreases. When the load reaches the peak value, the colloid gradually fails, the load decreases, and the deformation increases. At this time, the slope of the load-deformation curve gradually turns negative.

[0070] See Figure 6 , Monitor the tangent value of the tangent line of the load-deformation curve point. Since the tangent line of a certain point is approximately the same as the secant line of that point, the secant line tangent value of the load-deformation curve point can be monitored. The specific method is that during the detection process, take the load N i and the deformation Δl i of a certain point on the curve, the load N i-1 and the deformation Δl i-1 of the previous point, and calculate the tangent value of the secant line corresponding to that point

[0071]

[0072] According to the above rules, when the tangent value of the secant line of a certain monitoring point is compared with the point with the same condition (equivalent to using the point with the same condition as the reference system), when the tangent value of the abnormal point is significantly smaller than that of the point with the same condition, or even drops sharply, this is described as trigger condition 1; Figure 6 It can be seen that during the load loading process, there will be a large difference between the tangent value of the secant line corresponding to the same condition point and the abnormal point;

[0073] The analysis of glass strain law is as follows:

[0074] The small deflection theory of elastic thin plate is used to calculate the strain variation law of the control section before and after the colloid cracking. The variation law of the internal force (bending moment) of the glass control section is calculated first. Because the section modulus of the glass is a constant, the section strain law is the same as the internal force variation law.

[0075] According to Kirchhoff's assumptions and the assumption that the normal stress perpendicular to the mid-plane is much smaller than the stress component parallel to the mid-plane and can be ignored:

[0076] u z＝0 =0

[0077] v z＝0 =0

[0078] ω=ω(x,y)

[0079] The basic differential equation of the thin plate bending problem in the elastic thin plate small deflection theory is obtained:

[0080]

[0081] The bending stiffness of the plate is expressed as:

[0082] In actual engineering, numerical methods are usually used for approximate solutions, retaining enough series expansion terms, and the error between the solution and the theoretical solution is controlled within the allowable range to meet engineering needs. To solve this basic differential equation, two corresponding boundary conditions must be given for each boundary.

[0083] When the silicone structural adhesive has not failed, the boundary is a simply supported edge and the boundary conditions are:

[0084] (ω) y＝0 =0, (M y ) y＝0 =0

[0085] When the silicone structural adhesive fails, the boundary is a free edge and the boundary conditions are:

[0086] (M y ) y＝b =0, (M yx ) y＝b =0, (Q y )y＝b = 0;

[0087] According to the above theory, a finite element model of the glass is established, and the calculation parameters are as follows: the glass thickness is 8 mm, the glass length is 1.5 m, the width is 1.0 m, the elastic modulus is 70000000000 Pa, the Poisson's ratio is 0.24, the boundary condition of the non-failed part of the structural adhesive is a simply supported edge, and the boundary condition of the failed part is a free edge;

[0088] Figure 8 It shows that when the middle part of the long side fails, the stress in the direction perpendicular to the adhesive of the abnormal point 2 on the left is less than the stress of the point 2 on the right under the same conditions. Figure 8 Only the stress values of the points under the same conditions and their adjacent areas are shown, Figure 9 , Figure 11 , Figure 13 The situation is the same.

[0089] Figure 9 It shows that when the middle part of the long side fails, the stress in the direction along the adhesive of the abnormal point 2 on the left is much greater than the stress of the point 2 on the right under the same conditions, and even the stress in the direction along the adhesive of the abnormal point 2 on the left is greater than the stress in the direction along the adhesive of the point 2 in the mid-span section.

[0090] Figure 11 It shows that when the edge of the long side fails, the stress in the direction along the adhesive of the abnormal point 1 on the left is much greater than the stress of the point 1 on the right under the same conditions.

[0091] Figure 13 It shows that when the middle part of the short side fails, the stress in the direction along the adhesive of the abnormal point 4 above is much greater than the stress of the point 4 below under the same conditions.

[0092] According to the monitored strain law, when the strain in the direction along the adhesive of a certain strain monitoring point near the adhesive is significantly greater than the strain of the point under the same conditions, or the strain in the direction along the adhesive of the abnormal point is greater than the strain in the direction along the adhesive of the mid-span section, this is described as trigger condition 2,

[0093] When either trigger condition 1 or 2 is met alone, the control system is triggered to pause the loading and manually inspect the abnormal points;

[0094] When both trigger condition 1 and 2 are met simultaneously, the control system is triggered to pause the loading and unload, and manually inspect the abnormal points; thus, the initial debonding of the structural adhesive can be pre-warned in advance, and the loading can be stopped in time or the loading value can be reduced as needed to prevent the further expansion of the debonded state and avoid the risk of the glass falling from a height.

[0095] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in the related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A self-locking and balanced glass curtain wall bearing performance detection device, characterized in that: It includes a first balance frame (150); a transmission assembly (100) is provided on the first balance frame (150); the transmission assembly (100) drives the transmission rod (130) to move closer to or away from the first balance frame (150); a second balance frame (160) is connected to the side of the transmission rod (130) away from the first balance frame (150); a first connecting rod (170) for applying a load to the glass curtain wall (400) is connected to the second balance frame (160); a self-locking fixture (200) connected to the keel (410) on the side of the glass curtain wall (400) is provided at the end of the first balance frame (150); when the transmission assembly (100) moves the second balance frame (160) closer to the first balance frame (150) through the transmission rod (130), the second balance frame (160) applies a load to the glass curtain wall (400) through the first connecting rod (170), and the self-locking fixture (200) further clamps the keel (410) under the action of the first balance frame (150); the self-locking fixture (200) is connected to the first balance frame (150) through a second connecting rod (210); at least one of the second connecting rods (210) is provided with a second limiting member (211) and a pre-tightening device (300) respectively arranged on both sides of the first balance frame (150); at least one of the first connecting rods (170) is provided with a first limiting member (171) and another pre-tightening device (300) respectively arranged on both sides of the second balance frame (160); the pre-tightening device (300) includes a number of abutting portions (350) that can apply a load to pre-tighten the abutted components; the abutting portions (350) follow the displacement of the deformed end face when the abutted components are deformed and always abut against the abutted components to keep the first connecting rod (170) and the second connecting rod (210) only subject to axial forces.

2. The self-locking and balanced glass curtain wall bearing performance detection device according to claim 1, characterized in that: The transmission assembly (100) includes a motor (110); the motor (110) drives the transmission rod (130) to move axially through a worm and worm gear assembly (120).

3. A self-locking and balanced glass curtain wall bearing performance detection device according to claim 1, characterized in that: The transmission rod (130) is connected to the second balance frame (160) through a force value sensor (140).

4. A self-locking and balanced glass curtain wall bearing performance detection device according to claim 3, characterized in that: One end of the force value sensor (140) away from the transmission rod (130) is connected to a first lifting ring (141); the first lifting ring (141) is connected to the second balance frame (160) through a second lifting ring (142).

5. The self-locking and balanced glass curtain wall bearing performance detection device according to claim 1, characterized in that: There are two relatively arranged self-locking fixtures (200); the self-locking fixtures (200) include relatively arranged clamping plates (220) for clamping the keel (410); each of the clamping plates (220) is rotatably connected with a vertical rod (230); the middle parts of the two vertical rods (230) are rotatably connected with a second horizontal rod (260); one end of each of the two vertical rods (230) far from the clamping plate (220) is rotatably connected with an inclined rod (240); the two inclined rods (240) are respectively rotatably connected to both ends of the first horizontal rod (250); the first horizontal rod (250) is connected to the second connecting rod (210); when the second connecting rod (210) moves under force, the distance between the clamping plates (220) is controlled.

6. The self-locking and balanced glass curtain wall bearing performance detection device according to claim 5, wherein: A pre-tightening rod (270) is arranged between the first horizontal rod (250) and the second horizontal rod (260); a first spring (271) is sleeved on the pre-tightening rod (270) so that the clamping plates (220) can pre-clamp the keel (410); one end of the pre-tightening rod (270) extends out of the second horizontal rod (260) and is provided with a limit block (272) to prevent the pre-tightening rod (270) from detaching from the second horizontal rod (260); the other end of the pre-tightening rod (270) is fixedly connected to the first horizontal rod (250).

7. A self-locking and balanced glass curtain wall bearing performance detection device according to claim 1, characterized in that: The pre-tightening device (300) includes a fixedly arranged guide block (310); several top blocks (330) are arranged below the guide block (310); several guide rods (320) connected to the top blocks (330) are slidably connected in the guide block (310); a second spring (340) is sleeved on a part of the guide rods (320) between the guide block (310) and the top blocks (330); one end of the guide rod (320) far from the top block (330) extends out of the guide block (310) and is provided with a limiting part (321) to prevent the guide rod (320) from detaching from the guide block (310); a contact part (350) is arranged at the bottom of the top block (330); the contact part (350) cooperates with the first balance frame (150) and the second balance frame (160).

8. A self-locking and balanced glass curtain wall bearing performance detection device according to claim 7, characterized in that: There are three top blocks (330); the contact part (350) is any one of a ball, a bearing, a spherical protrusion, and a columnar protrusion.

9. The self-locking and balanced glass curtain wall bearing performance detection device according to claim 1, characterized in that: The first connecting rod (170) is connected to the glass curtain wall (400) through a suction cup (172).

10. A monitoring system, characterized in that: It includes a self-locking balance type glass curtain wall bearing performance detection device and a control module according to any one of claims 1-9; the detection device is arranged at the center position of the glass curtain wall (400) to apply a load to the glass curtain wall (400); several monitoring points are arranged on the glass curtain wall (400), and several same-condition points are included in the monitoring points; the same-condition points are two monitoring points arranged symmetrically along the glass central axis; a displacement gauge (510) and a strain gauge (520) are arranged at the monitoring points; the control module receives the displacement, strain, and load data collected at each monitoring point for processing.

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