Friction energy consumption connecting piece based on gravity self-resetting

Abstract

The utility model relates to a friction energy consumption connecting piece based on gravity self-resetting, which belongs to the technical field of assembly type buildings and comprises a connecting support, a friction energy consumption connecting piece and a friction energy consumption connecting piece, the mounting shell is mounted on the external wall panel; one end of the energy dissipation reset assembly is connected with the connecting support, and the other end of the energy dissipation reset assembly is installed in the shell; the energy consumption friction assembly comprises a sliding friction pair composed of inclined faces making contact with each other. Friction energy consumption is provided, and meanwhile the horizontal displacement generated by the installation shell and the outer wall plate relative to the connecting support is converted into the horizontal displacement between the energy consumption reset assembly and the installation shell and the height change of the outer wall plate. And a spring is arranged between the upper and lower sliding friction pairs, and the outer wall panel is self-reset after the height is changed through the spring and the dead weight of the outer wall panel. Stable connection of the external wall panels can be achieved, and the problems of energy consumption and self-resetting of connection of the external wall panels under the action of earthquakes are solved.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, and in particular relates to a friction energy dissipation connector based on gravity self-resetting. Background Technology

[0002] In modern steel structure buildings, exterior wall panels (such as precast wall panels and curtain wall panels) are typically fixed to the main structure using connectors. However, traditional exterior wall panel connections are mostly rigid connections or simple supports, lacking energy dissipation and displacement adjustment capabilities. During an earthquake, significant relative displacement and vibration occur between the main structure and the exterior wall panels, and stress cannot be effectively released. Rigid connections are highly susceptible to damage: at best, connecting bolts loosen and wall panels crack; at worst, connectors break, causing wall panels to detach, seriously affecting structural and personnel safety. To avoid brittle failure of rigid connections, some exterior wall connection designs employ measures such as elongated circular hole grooves to allow moderate sliding of wall panels. However, these designs lack energy dissipation and vibration reduction mechanisms, and seismic energy is directly transferred to the main structure and wall panels, potentially causing component damage. Furthermore, the lack of a reset device after sliding can lead to relative displacement of the exterior wall panels after an earthquake, resulting in permanent residual deformation that requires manual correction or repair.

[0003] Existing connectors are difficult to simultaneously meet the requirements of energy dissipation and shock absorption as well as post-earthquake self-resetting, and the rapid functional recovery of the external wall cladding system after an earthquake also faces challenges. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a gravity-based self-resetting friction energy-dissipating connector to achieve stable connection of exterior wall panels and solve the energy dissipation and self-resetting problems of exterior wall panel connections under seismic action.

[0005] A gravity-based self-resetting friction energy-dissipating connector, comprising:

[0006] Connecting brackets are installed on the main structural components;

[0007] The housing is installed on the exterior wall panel;

[0008] The energy-dissipating reset component is connected at one end to the connecting bracket and at the other end inside the mounting housing. The energy-dissipating friction component includes a sliding friction pair formed by contacting inclined surfaces. While providing frictional energy dissipation, it converts the horizontal displacement of the mounting housing and the outer wall panel relative to the connecting bracket into the horizontal displacement between the energy-dissipating reset component and the mounting housing, as well as the change in the height of the outer wall panel. A spring is provided between the upper and lower sliding friction pairs, and the outer wall panel self-resets after the height change through the spring and the weight of the outer wall panel.

[0009] The connecting bracket is an L-shaped angle steel plate component, with its horizontal side connected to the main structural component and its vertical side connected to the energy-dissipating friction component.

[0010] The energy-consuming reset assembly includes an energy-consuming friction plate, an intermediate friction block, and a reset spring. One end of the energy-consuming friction plate is mounted on the connecting bracket, and the other end extends horizontally into the interior of the mounting housing. The intermediate friction block is sleeved on the outside of the energy-consuming friction plate from both the upper and lower ends, located between the mounting housing and the energy-consuming friction plate, and cooperates with the energy-consuming friction plate.

[0011] The energy-dissipating friction plate is an I-shaped component with two flanges of unequal lengths. The shorter flange is the connecting end, which is connected to the vertical side of the connecting bracket. The web extends horizontally into the interior of the mounting housing along with the longer flange. The longer flange is the friction energy-dissipating end, which is set vertically inside the mounting housing. Intermediate friction blocks are set at the upper and lower ends of the longer flange of the energy-dissipating friction plate. The contact surface between the energy-dissipating friction plate and the intermediate friction blocks is an inclined surface, forming a sliding friction pair.

[0012] The friction energy dissipation end is an inclined plate-shaped body with an inclination angle of 10° to 30° with the horizontal plane.

[0013] The intermediate friction block includes two friction blocks arranged opposite each other. The top surface of the friction block is an arc-shaped convex surface or an inclined surface, which is adapted to the inner surface of the mounting housing. The bottom surface of the friction block is provided with a sliding friction groove, which matches the energy-consuming friction plate.

[0014] The cross-section of the sliding friction groove is larger than the thickness of the friction energy-consuming end of the energy-consuming friction plate, so as to allow relative sliding between the two.

[0015] A return spring is provided between the two friction blocks. The return spring is arranged in the vertical direction so that the inner wall of the sliding friction groove of the middle friction block and the surface of the energy-consuming friction plate maintain the clamping force provided by the return spring.

[0016] The width of the intermediate friction block is smaller than the inner cavity width of the mounting housing, and a gap is left between the intermediate friction block and the two side walls of the mounting housing; an elongated hole is opened on the mounting housing along the height direction, and the elongated hole is located at the gap between the intermediate friction block and the mounting housing. The bolt passes through the elongated hole to fix the mounting housing to the outer wall, and the bolt can move along its length direction within the elongated hole; at the same time, the bolt is installed at the top of the elongated hole, so that the outer wall panel and the mounting housing can only move upward along the elongated hole.

[0017] The mounting housing includes two identical half-shells arranged opposite each other, with the openings of the two half-shells facing each other to provide a closed or semi-closed cavity.

[0018] By employing the above technical solution, this utility model application has at least the following beneficial effects:

[0019] 1. Simple assembly and clear force transmission: This utility model has a simple structure, with each component mainly connected by bolts. On-site installation is a dry operation, with simple procedures and fast construction speed. The energy-dissipating friction plate, intermediate friction block, mounting shell, and return spring can all be prefabricated on the outer wall panel and connected to the connecting bracket by bolts, ensuring the efficiency and convenience of on-site construction. At the same time, the force transmission path of the connecting parts is clear and well-defined: the horizontal displacement of the connecting bracket caused by the earthquake through the main structural components is borne by the friction pair composed of the energy-dissipating friction plate and the intermediate friction block and the return spring, reducing the displacement of the outer wall panel due to stress and thus preventing damage. Then, through the spring and the self-realignment of the outer wall panel, the entire connection node is reasonably and reliably stressed, without causing adverse stress concentration on the wall panel body and the main structure.

[0020] 2. Concentrated Energy Dissipation and Controllable Wear: This invention concentrates the relative deformation and damage caused by earthquakes within the connector through a sliding friction pair. When an earthquake occurs, the displacement of the exterior wall panel relative to the main structure is mainly absorbed by the frictional sliding between the friction blocks in the middle of the energy-dissipating friction plate, thereby significantly reducing the impact energy transmitted to the main structure and wall panel, protecting the main structural components from entering the plastic stage. Because the energy dissipation is concentrated in the connector, the friction pair of the connector undergoes controllable sliding and wear, while the exterior wall panel and the main steel frame remain essentially elastic and do not require replacement. Even in the event of a rare earthquake, the connector bears the main energy dissipation role, avoiding serious damage such as wall panel cracking or detachment.

[0021] This invention effectively converts the relative motion energy generated during an earthquake into frictional heat energy for dissipation, reducing the direct impact of seismic forces on the main structure and exterior wall panels, and significantly mitigating the impact of earthquakes on buildings.

[0022] 3. Strong self-resetting ability and rapid post-earthquake recovery: This utility model utilizes the synergistic effect of the self-weight of the exterior wall panel and the return spring to achieve the automatic reset function of the connecting parts. After the earthquake load is removed, the slippage between the friction pairs will automatically recover due to the gravity of the exterior wall panel. At the same time, the return spring provides additional restoring force, allowing the exterior wall panel to quickly return to its initial installation position with virtually no residual displacement. The wall panel can be restored to its original state without manual intervention, ensuring the integrity and functionality of the building facade after an earthquake, avoiding permanent displacement or deformation of the exterior wall panel after an earthquake, reducing maintenance workload, and improving the building's seismic recovery capability.

[0023] 4. Convenient Maintenance and Replacement: The energy-consuming friction plate, intermediate friction block, and return spring of this utility model are all replaceable independent units. Furthermore, the energy-consuming friction plate, intermediate friction block, and mounting housing are all made of high-strength steel, ensuring high reliability and durability during long-term use and meeting the needs of high-intensity earthquake zones. After an earthquake, if local components such as the energy-consuming friction plate or intermediate friction block of the connector show wear or yielding deformation, only the corresponding components need to be replaced to restore the overall performance of the connector. Large-scale removal of exterior wall panels is unnecessary, making maintenance quick and efficient, which is beneficial for the rapid repair and restoration of the building's functionality after an earthquake. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the gravity self-resetting friction energy dissipation connector of this utility model.

[0025] Figure 2 This is a front view of the friction energy dissipation connector based on gravity self-resetting according to this utility model;

[0026] Figure 3 This is a schematic cross-sectional view of the friction energy dissipation connector based on gravity self-resetting according to this utility model.

[0027] Figure 4 This is an exploded view of the gravity-based self-resetting friction energy-dissipating connector of this utility model.

[0028] Figure 5 This is a schematic diagram of the connecting bracket structure in this utility model;

[0029] Figure 6 This is a schematic diagram of the energy-consuming friction plate in this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the intermediate friction block in this utility model;

[0031] Figure 8 This is a schematic diagram of the mounting housing in this utility model;

[0032] in:

[0033] 1 Connecting bracket, 2 Energy-consuming friction plate, 3 Intermediate friction block, 4 Mounting housing, 5 Return spring. Detailed Implementation

[0034] To better explain and facilitate understanding of this utility model, the technical solution and effects of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1-8As shown, a gravity-based self-resetting friction energy-dissipating connector includes a connecting bracket 1, an energy-dissipating friction plate 2, an intermediate friction block 3, a mounting housing 4, and a return spring 5. The connecting bracket 1 is fixedly installed on the main structural component by expansion bolts or high-strength bolts. One end of the energy-dissipating friction plate 2 is installed on the connecting bracket 1, and the other end extends horizontally into the interior of the mounting housing 4, which is installed on the outer wall panel. The intermediate friction block 3 is sleeved on the outside of the energy-dissipating friction plate 2 from both the upper and lower ends, located between the mounting housing 4 and the energy-dissipating friction plate 2, and cooperates with the energy-dissipating friction plate 2. The contact surface between the energy-dissipating friction plate 2 and the intermediate friction block 3 is an inclined surface. The return spring 5 is installed between the intermediate friction block 3 and the mounting housing 4. The width of the intermediate friction block 3 is smaller than the inner cavity width of the mounting housing 4. A gap is left between the intermediate friction block 3 and the two side walls of the mounting housing 4. An elongated hole is formed along the height direction on the mounting housing 4. The elongated hole is located at the distance between the intermediate friction block 3 and the mounting housing 4, and does not interfere with the intermediate friction block 3. Bolts pass through the elongated hole to fix the mounting housing 4 to the outer wall, and the bolts can move along the length of the elongated hole. The bolts are installed at the top of the elongated hole, so that the outer wall panel and the mounting housing 4 can only move upwards along the elongated hole.

[0036] In this embodiment, a gravity-based self-resetting friction energy-dissipating connector includes a connecting bracket 1, which is an L-shaped angle steel plate component. Its horizontal side is connected to the main structural component, such as a steel column or floor, and its vertical side is connected to an energy-dissipating friction plate 2. The connecting bracket 1 has several elongated oval mounting holes. Its horizontal side is fixed to the column side or floor edge of the main structure using expansion bolts or high-strength bolts. Similarly, its vertical side has several elongated oval holes for connecting to the energy-dissipating friction plate 2 and locking it with high-strength bolts. The elongated oval holes facilitate adjustment of the connecting bracket 1 during construction, improving installation accuracy. The connecting bracket 1 is made of high-rigidity and high-strength steel to withstand the weight of the exterior wall panel and seismic shear force. Its dimensions and thickness are determined by structural calculations based on the load of the exterior wall panel. Specifically, the connecting bracket 1 uses steel with a yield strength of not less than 345MPa (e.g., Q345) and a thickness ≥2mm; if applied in coastal, high-rise, or high-wind-pressure areas, the thickness ≥2.5mm. The specific dimensions and thickness need to be calculated according to the "Code for Design of Steel Structures" (GB 50017) to ensure that it can withstand the static load, seismic shear force and wind load of the exterior wall panel, and meet the anti-corrosion requirements (such as hot-dip galvanized layer thickness ≥65μm). After installation, the vertical plate surface of the connecting bracket 1 faces the exterior wall panel, serving as the support base for the energy-dissipating friction plate 2.

[0037] Furthermore, the energy-dissipating friction plate 2 is a key component for providing frictional energy dissipation, and is made of a thick steel plate with a thickness of ≥2mm. The energy-dissipating friction plate 2 is an I-shaped component with two flanges of unequal length. The shorter flange is the connecting end, connected to the vertical side of the connecting bracket 1. A through hole corresponding to the elongated hole on the vertical side of the connecting bracket 1 is opened on the shorter flange, and it is securely connected to the connecting bracket 1 by bolts. This bolted connection method facilitates replacement and installation. The web of the energy-dissipating friction plate 2, along with the longer flange, extends horizontally into the interior of the mounting housing 4. The longer flange of the energy-dissipating friction plate 2 is the friction energy-dissipating end, vertically positioned inside the mounting housing 4. Intermediate friction blocks 3 are provided at the upper and lower ends of the longer flange of the energy-dissipating friction plate 2. The contact surface between the energy-dissipating friction plate 2 and the intermediate friction blocks 3 is an inclined surface, with the larger end facing away from the connecting bracket 1. That is, as the intermediate friction blocks 3 move away from the connecting bracket 1, they also move towards the edge of the outer wall panel.

[0038] In this embodiment, the friction energy dissipation end is an inclined plate-shaped body, forming an angle of 10° to 30° with the horizontal plane. The two end faces of the plate-shaped body are inclined surfaces, tilting towards the two ends of the plate-shaped body, that is, the upper end of the plate-shaped body tilts upward and the lower end of the plate-shaped body tilts downward. The inclined surfaces are smooth and flat, serving as the friction sliding surface.

[0039] The material and surface treatment of the energy-dissipating friction plate 2 should ensure sufficient wear resistance and fatigue resistance to withstand multiple cycles of slip without performance degradation. Specifically, the fatigue strength of the energy-dissipating friction plate 2 should reach 40%-50% of the material's yield strength. If the yield strength of the steel is σs, the fatigue strength σa should satisfy σa≥0.4σs to ensure that it will not fail due to fatigue under repeated loading.

[0040] The intermediate friction block 3 is an intermediate energy-dissipating unit disposed between the energy-dissipating friction plate 2 and the mounting housing 4. It includes two opposing friction blocks, which are rectangular block structures. The top surface of each friction block is an arc-shaped convex surface or an inclined surface, adapted to the inner surface of the mounting housing 4. The bottom surface of each friction block has a sliding friction groove that matches the shape of the energy-dissipating friction plate 2, i.e., the bottom surface of the sliding friction groove is an inclined surface that contacts the inclined surface of the energy-dissipating friction plate 2. The friction block is fitted onto the outside of the friction-dissipating end of the energy-dissipating friction plate 2 through the sliding friction groove, so that the friction-dissipating end is inserted into its internal cavity. The surfaces of the friction-dissipating end and the friction block are in close contact, and the two move relative to each other along the inclined surface to achieve frictional energy dissipation. The cross-section of the sliding friction groove is larger than the thickness of the friction-dissipating end of the energy-dissipating friction plate 2 to allow relative sliding between the two.

[0041] During installation, the sliding friction groove of the intermediate friction block 3 is aligned with the friction energy-consuming end of the energy-consuming friction plate 2, and the friction energy-consuming end is inserted into the sliding friction groove, allowing the intermediate friction block 3 to slide along the length of the energy-consuming friction plate 2. To increase frictional resistance, a return spring 5 is provided between the two friction blocks. The return spring 5 is arranged vertically, so that the inner wall of the sliding friction groove of the intermediate friction block 3 and the surface of the energy-consuming friction plate 2 maintain a certain clamping force provided by the return spring 5. Several spring mounting holes are opened on the intermediate friction block 3 to accommodate the return spring 5 and position the spring. To further improve friction, a wear-resistant lining with a high coefficient of friction, ≥0.5, preferably 0.6-0.8, is attached to the contact surface between the intermediate friction block 3 and the energy-consuming friction plate 2.

[0042] The material of the intermediate friction block 3 should have high strength and wear resistance, and should be made of medium carbon steel or alloy steel in an integral process.

[0043] When the outer wall panel undergoes relative displacement, the friction-dissipating end of the energy-dissipating friction plate 2 slides and rubs within the sliding friction groove of the intermediate friction block 3, generating damped energy dissipation. Since the contact surface between the friction-dissipating end and the friction block is inclined, the sliding process is accompanied by longitudinal relative displacement between the intermediate friction block 3 and the friction-dissipating end of the energy-dissipating friction plate 2. Due to the presence of the elongated hole on the mounting housing 4, the mounting housing 4, connected to the outer wall panel, can only move upwards, thus converting horizontal displacement into vertical lifting. That is, when the intermediate friction block 3 moves with the outer wall panel, its top surface rolls or slides within the mounting housing 4, causing the mounting housing 4, the outer wall panel, and the center of the friction block 3 to rise. The arc-shaped convex surface contact structure makes the sliding of the friction block inevitably accompanied by lifting motion, requiring overcoming the weight of the outer wall panel, thus converting some kinetic energy into gravitational potential energy to achieve a self-resetting function.

[0044] The return spring 5 is an elastic element that provides self-resetting restoring force. In this embodiment, two parallel cylindrical helical compression springs (or disc spring groups or other elastic elements can be used as needed) are vertically placed in the spring mounting holes opened on the intermediate friction block 3. Due to the seismic action, the intermediate friction block 3 will slide laterally with the mounting housing 4 along their arc-shaped convex surfaces or inclined surfaces. Due to the presence of the arc-shaped convex surfaces or inclined surfaces, during the movement of the intermediate friction block 3, the two friction blocks approach each other and generate horizontal displacement relative to the mounting housing 4, reducing the distance between them. As a result, the return spring 5 between them is compressed and stores elastic potential energy. When the external force is released, the elastic potential energy of the spring is released, assisting the two friction blocks of the intermediate friction block 3 to return to their initial positions. In addition to providing vertical restoring force, the return spring 5 also enhances the contact pressure between the intermediate friction block 3 and the energy-dissipating friction plate 2 by applying pre-pressure to the intermediate friction block 3, so that the friction pair has a certain frictional resistance at the beginning of the movement, ensuring that it can play an energy-dissipating and vibration-damping role even under small earthquake conditions. The stiffness and pre-compression of the reset spring 5 are selected according to design requirements to adjust the self-resetting stiffness and friction level of the entire connection to meet the performance requirements under earthquakes of different intensities.

[0045] The mounting housing 4 comprises two identical semi-shells, arranged opposite each other, and securely connected to the back structure of the exterior wall panel via embedded parts or anchors. The semi-shells are semi-enclosed, with their openings facing each other to form a rectangular box-shaped steel structure, providing a closed or semi-enclosed cavity for the installation and relative movement of the energy-dissipating friction plate 2 and the intermediate friction block 3. The dimensions of the mounting housing 4 are sufficient to accommodate the energy-dissipating friction plate 2, the intermediate friction block 3, and the return spring 5. The openings of the semi-shells allow the energy-dissipating friction plate 2 to extend freely. The intermediate friction block 3 is positioned within a guide groove inside the mounting housing 4, ensuring that the intermediate friction block 3 can only move in a predetermined direction.

[0046] Furthermore, the mounting housing 4 has a connecting groove on its side, facing the connecting bracket 1, serving as a front side plate, allowing the energy-dissipating friction plate 2 to extend into the housing and engage with the friction block 3. The mounting housing 4 is fixedly connected to the outer wall panel via its rear side plate, using pre-embedded steel plate welding or expansion bolt connection, enabling the mounting housing 4 to reliably withstand the self-weight of the outer wall panel and seismic forces. The inner bottom surface of the mounting housing 4 is an arc-shaped concave or inclined surface adapted to the top surface of the intermediate friction block 3, serving as the bearing surface of the intermediate friction block 3. When the intermediate friction block 3 slides relative to the energy-dissipating friction plate 2, the top surface of the intermediate friction block 3 will roll or slide on the inner bottom surface of the mounting housing 4, providing upward support and motion constraint to the friction block. Through the protection and constraint of the mounting housing 4, key components such as the friction block 3 and spring 5 are protected from external environmental influences, ensuring the overall aesthetics and flatness of the outer wall panel connectors.

[0047] Furthermore, the mounting housing 4 is provided with inspection holes or observation windows while meeting the rigidity requirements, so as to check the wear of the friction pair formed by the internal intermediate friction block 3 and the energy-consuming friction plate 2 or to replace internal components.

[0048] The exterior wall panel is connected to the main structure as a whole through the aforementioned connectors. When the main structure and the exterior wall panel undergo relative displacement, the energy-dissipating friction plate 2 and the intermediate friction block 3 inside the connector slide relative to each other through the inclined surface, thereby playing a role in energy dissipation and deformation adjustment; at the same time, under the action of the return spring 5 and the gravity of the exterior wall panel, the slidable part can be automatically reset and returned to its original position.

[0049] The working principle of the above-mentioned gravity-based self-resetting friction energy-dissipating connector is as follows:

[0050] Under normal use, the exterior wall panel is reliably fixed to the main structure via the gravity-based self-resetting friction energy-dissipating connector provided in this embodiment, and the entire connector is in its initial equilibrium position. During an earthquake, the main structure experiences lateral vibration, and the exterior wall panel connected to it lags behind due to inertia. At this time, the mounting housing 4, along with the exterior wall panel, undergoes horizontal displacement relative to the connecting bracket 1 fixed to the main structure. This horizontal displacement first causes sliding friction between the energy-dissipating friction plate 2 and the intermediate friction block 3: the intermediate friction block 3 slides within the mounting housing 4 along the inclined direction of the friction energy-dissipating end, and the frictional force generated between the friction pairs dampens the movement, dissipating a large amount of seismic energy. Simultaneously, the sliding process is accompanied by longitudinal relative displacement between the intermediate friction block 3 and the friction energy-dissipating end of the energy-dissipating friction plate 2. Due to the presence of the elongated hole on the mounting housing 4, the mounting housing 4 can only move upwards, slightly raising the exterior wall panel. This compresses the reset spring 5 while raising the height of the exterior wall panel's center of gravity, thereby converting the kinetic energy of the horizontal displacement into elastic potential energy and gravitational potential energy stored in the system. After the seismic effect weakens or disappears, the intermediate friction block 3 automatically slides back to its initial position along the inclined surface under the elastic force of the reset spring 5 and the gravity of the outer wall panel, bringing the outer wall panel back to its original installation position and achieving self-reset.

[0051] Throughout the process, the relative displacement between the exterior wall panel and the main structure is released through the sliding of the connectors, and the vibration energy is dissipated as heat energy through friction, which greatly reduces the impact transmitted to the exterior wall panel and protects its integrity. This cycle repeats continuously, so that when the structure is subjected to an earthquake, the deformation and energy dissipation are concentrated inside the connectors, and there is no obvious residual deformation of the exterior wall panel after the earthquake, which can maintain the original installation position and facade flatness.

[0052] After an earthquake, the exterior wall panels can be realigned due to the repositioning effect of this connector, leaving almost no residual displacement or deformation, thus ensuring the integrity of the building facade. If the performance of the friction energy dissipation component of the connector deteriorates after multiple strong earthquakes, its energy dissipation and connection functions can be restored simply by replacing the intermediate friction block 3 or the energy dissipation friction plate 2, the return spring 5, and other components, making maintenance very convenient.

[0053] The connector provided by this utility model has a simple structure, clear force distribution, high energy efficiency and self-resetting capability, which can significantly improve the seismic safety and post-earthquake functional recovery performance of the steel structure building exterior wall enclosure system. It effectively solves the problem of energy consumption and reset of the exterior wall panel connection under earthquake, while also having good seismic energy consumption capacity and self-resetting performance.

Claims

1. A friction-dissipating connector based on gravity self-resetting, characterized in that, include: Connecting brackets are installed on the main structural components; The housing is installed on the exterior wall panel; The energy-consuming reset component has one end connected to the connecting bracket and the other end inside the mounting housing; The energy-dissipating friction component includes a sliding friction pair composed of contacting inclined surfaces. While providing frictional energy dissipation, it converts the horizontal displacement of the mounting housing and the outer wall panel relative to the connecting bracket into the horizontal displacement between the energy-dissipating reset component and the mounting housing, as well as the change in the height of the outer wall panel. A spring is provided between the upper and lower sliding friction pairs, and the outer wall panel self-resets after the height change through the spring and the weight of the outer wall panel.

2. The friction energy dissipation connector based on gravity self-resetting according to claim 1, characterized in that: The connecting bracket is an L-shaped angle steel plate component, with its horizontal side connected to the main structural component and its vertical side connected to the energy-dissipating friction component.

3. The friction energy dissipation connector based on gravity self-resetting according to claim 1, characterized in that: The energy-consuming reset assembly includes an energy-consuming friction plate, an intermediate friction block, and a reset spring. One end of the energy-consuming friction plate is mounted on the connecting bracket, and the other end extends horizontally into the interior of the mounting housing. The intermediate friction block is sleeved on the outside of the energy-consuming friction plate from both the upper and lower ends, located between the mounting housing and the energy-consuming friction plate, and cooperates with the energy-consuming friction plate.

4. A gravity-based self-resetting friction energy-dissipating connector according to claim 3, characterized in that: The energy-dissipating friction plate is an I-shaped component with two flanges of unequal lengths. The shorter flange is the connecting end, which is connected to the vertical side of the connecting bracket. The web extends horizontally into the interior of the mounting housing along with the longer flange. The longer flange is the friction energy-dissipating end, which is set vertically inside the mounting housing. Intermediate friction blocks are set at the upper and lower ends of the longer flange of the energy-dissipating friction plate. The contact surface between the energy-dissipating friction plate and the intermediate friction blocks is an inclined surface, forming a sliding friction pair.

5. A gravity-based self-resetting friction energy-dissipating connector according to claim 4, characterized in that: The friction energy dissipation end is an inclined plate-shaped body with an inclination angle of 10° to 30° with the horizontal plane.

6. A gravity-based self-resetting friction energy-dissipating connector according to claim 3, characterized in that: The intermediate friction block includes two friction blocks arranged opposite each other. The top surface of the friction block is an arc-shaped convex surface or an inclined surface, which is adapted to the inner surface of the mounting housing. The bottom surface of the friction block is provided with a sliding friction groove, which matches the energy-consuming friction plate.

7. A gravity-based self-resetting friction energy-dissipating connector according to claim 6, characterized in that: The cross-section of the sliding friction groove is larger than the thickness of the friction energy-consuming end of the energy-consuming friction plate, so as to allow relative sliding between the two.

8. A gravity-based self-resetting friction energy-dissipating connector according to claim 6, characterized in that: A return spring is provided between the two friction blocks. The return spring is arranged in the vertical direction so that the inner wall of the sliding friction groove of the middle friction block and the surface of the energy-consuming friction plate maintain the clamping force provided by the return spring.

9. A gravity-based self-resetting friction energy-dissipating connector according to claim 3, characterized in that: The width of the intermediate friction block is smaller than the inner cavity width of the mounting housing, and a gap is left between the intermediate friction block and the two side walls of the mounting housing; an elongated hole is opened on the mounting housing along the height direction, and the elongated hole is located at the gap between the intermediate friction block and the mounting housing. The bolt passes through the elongated hole to fix the mounting housing to the outer wall, and the bolt can move along its length direction within the elongated hole; at the same time, the bolt is installed at the top of the elongated hole, so that the outer wall panel and the mounting housing can only move upward along the elongated hole.

10. A gravity-based self-resetting friction energy-dissipating connector according to claim 1, characterized in that: The mounting housing includes two identical half-shells arranged opposite each other, with the openings of the two half-shells facing each other to provide a closed or semi-closed cavity.

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