Energy absorbing curtain wall system for high-rise buildings

Abstract

The application relates to a high-rise building energy-absorbing curtain wall system, which comprises a fixed mounting upper frame fixed to the outer wall of a building, a fixed shaft and a stop piece, and is characterized in that: the system further comprises minimum energy-absorbing units arranged in a matrix array in the fixed mounting upper frame, the stop piece and the fixed shaft; the minimum energy-absorbing units comprise first and second half energy-absorbing components which are different in structure, the first and second half energy-absorbing components are changed from a static state to a movable state driven by wind force when the wind force reaches a set intensity and perform inconsistent movements, the first and second half energy-absorbing components have a contact surface, and in the movable state, the first and second half energy-absorbing components consume the kinetic energy of the wind force through the friction force of the contact surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building engineering material components, in particular to a high-rise building energy-absorbing curtain wall system. BACKGROUND

[0002] The curtain wall is a commonly used outer facade structure of high-rise buildings. The original curtain wall is mainly for decoration and aesthetic function. In recent years, with the gradual increase of high-rise buildings, the wind resistance, earthquake resistance and energy saving performance of the curtain wall have gradually been valued.

[0003] Some curtain wall systems with energy-absorbing devices have already appeared, such as document 1, a double-layer curtain wall damping system developed by Tongji University, China, authorized patent CN108643406B, which is composed of an inner curtain wall, an outer curtain wall, connecting rods, a track, a sliding block, a spring, a buffer material, a fixing part and a screw. The inner curtain wall is fixed to the main building, the outer curtain wall is divided according to the building floor, and the upper and lower curtain walls are fixedly connected by the fixing part. A track is arranged between the upper and lower outer curtain walls, and an elastic buffer material is pasted at the end of the track. Two sliding blocks connected by a spring are slidingly arranged on the track. The tail of the two connecting rods is connected with the two sliding blocks by a connecting part, and the head of the connecting part is connected with the inner curtain wall, so as to connect the inner and outer curtain walls to form a double-layer curtain wall system. Under the action of wind or / and earthquake, the system switches to the structural control state, and with the sliding of the sliding block on the track, the opening angle of the two connecting rods changes, the distance between the cavities of the inner and outer curtain walls changes, and the outer curtain wall acts as a mass damper to transfer and dissipate the kinetic energy of the structure. At the same time, the introduction of the spring and the buffer material between the sliding blocks further increases the energy dissipation capacity.

[0004] For example, document 2, an authorized patent CN111779165B developed by Hangzhou Aiman Environmental Technology Co., Ltd., China, is a wind-resistant curtain wall, which is a double-layer curtain wall, including an inner curtain wall fixed to the floor, and an outer curtain wall unit supported by the inner curtain wall and fixedly installed. Its features are as follows: an upper baffle is fixedly installed on the inner curtain wall or the floor; a rotating shaft is fixedly installed on the inner curtain wall or the floor; a lower baffle is fixedly installed on the inner curtain wall or the floor; a rotating plate can rotate around the rotating shaft; the upper baffle and the lower baffle limit the rotating range of the rotating plate 5 around the rotating shaft 3 in the clockwise direction respectively; the rotating plate can be rotated to a normal state in which the outer wall surface of the rotating plate is parallel to the lower baffle, and in this state, the outer wall surface of the rotating plate and the lower baffle together form a uniform outer facade; a torsional spring is installed on the rotating shaft to limit the counterclockwise rotation of the rotating plate; and a magnet is installed on the lower baffle to attract the steel structure on the rotating plate to keep it in the normal state.

[0005] Other novel curtain wall systems also employ movable structures. When strong winds or severe convective weather occur at high altitudes, some curtain wall components can move, enhancing ventilation and reducing the pressure of wind energy on the curtain wall structure. However, these systems generally use elastic components as reset devices for the movable structure (e.g., reference 2). These components cannot convert the kinetic energy of the components themselves brought by strong winds. This kinetic energy is converted back and forth within the elastic system, causing the components to bounce in the opposite direction, accelerating aging and causing noise problems. Other solutions use damping materials, but only for the buffering function of the movable components (e.g., reference 1). The kinetic energy of the movable components themselves remains within the elastic body (in this reference, a spring-slider mechanism). Only the top-pressure damping block absorbs a small amount of energy. The entire device still involves the conversion between kinetic energy and elastic potential energy. The kinetic energy that cannot be quickly absorbed will keep the device in a state of simple harmonic vibration or long-term damped vibration, which is not conducive to long-term use. Summary of the Invention

[0006] (a) Technical issues

[0007] In view of the current state of technology, an energy-absorbing curtain wall system is proposed.

[0008] (II) Technical Solution

[0009] A high-rise building energy-absorbing curtain wall system, comprising a fixed installation upper frame, a fixed shaft, and a stopper fixed to the exterior wall of the building, characterized in that: it further comprises minimum energy-absorbing units installed in a matrix array in the fixed installation upper frame, the stopper, and the fixed shaft;

[0010] The minimum energy-absorbing unit includes a first half-energy-absorbing component and a second half-energy-absorbing component with different structures. When the wind force reaches a set intensity, the first half-energy-absorbing component and the second half-energy-absorbing component change from a static state to a wind-driven movable state and perform inconsistent movements. There is a contact surface between the first half-energy-absorbing component and the second half-energy-absorbing component. In the above-mentioned movable state, the first half-energy-absorbing component and the second half-energy-absorbing component consume wind kinetic energy through the friction of the contact surface.

[0011] Further, the first half energy absorption component comprises a first opening plate rotatably mounted on the fixed mounting upper frame, and an inner toothed arc is fixedly arranged on the first opening plate, the inner toothed arc is an arc element with a center on a rotation shaft of the first opening plate, and an inner side of the arc is a partial gear; the first half energy absorption component further comprises a first gear sleeve mounted on a fixed shaft, and a gear is formed on the first gear sleeve and engaged with the inner toothed arc; the second half energy absorption component comprises a second opening plate rotatably mounted on the fixed mounting upper frame, and an outer toothed arc is fixedly arranged on the second opening plate, the outer toothed arc is an arc element with a center on a rotation shaft of the second opening plate, and an outer side of the arc is a partial gear; the second half energy absorption component further comprises a second gear sleeve mounted on a fixed shaft, and a gear is formed on the second gear sleeve and engaged with the outer toothed arc; an inner friction sleeve is further arranged on the first gear sleeve, and an outer friction sleeve is further arranged on the second gear sleeve, the inner friction sleeve and the outer friction sleeve are sleeved and form a frictional contact surface.

[0012] Further, the first opening plate and the second opening plate are attached to the stop piece by magnetic force or elastic force, and the opening plate is opened only when the wind reaches a set magnetic force or elastic force; the first opening plate and the second opening plate are rotatably arranged on the fixed mounting upper frame by a damping hinge.

[0013] Further, the gears on the first gear sleeve and the second gear sleeve are mounted on the inner friction sleeve and the outer friction sleeve through a one-way bearing 11, and the one-way bearing is selected to transmit torque when the first opening plate and the second opening plate are rotated to open, and not to transmit torque when the first opening plate and the second opening plate are reset.

[0014] (Three) beneficial effects

[0015] The present scheme has three beneficial effects, 1) the friction energy absorption structure is designed, so that the wind drives the two half energy absorption units to rub each other, and the energy is absorbed through friction loss; 2) through the use of a one-way bearing, torque is transmitted during energy absorption, and is not affected by the friction sleeve during reset; 3) using almost the same elements, the smallest energy absorption unit with different damping sizes is composed, only the intermediate wear parts are different, and other elements with different magnetic forces or different elastic forces are not needed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a system assembly drawing according to the present application;

[0017] Figure 2 It is an independent schematic diagram of the smallest energy absorption unit;

[0018] Figure 3 It is Figure 2 Front view from the side, showing the rotatable opening action, the double-dot-dash line shows the normal state of the curtain wall closed, and the solid line shows the rotated state when opened due to wind force and the like;

[0019] Figure 4 for Figure 2 View from the outside of the building walls Figure 2 Appearance drawing; note that the dimensions in the drawing are for illustrative purposes only. In actual customized curtain wall components, the upper and lower parts may not be exposed.

[0020] Figure 5 for Figure 2 Another angle diagram;

[0021] Figure 6 for Figure 2 Front view viewed from the inside of the building;

[0022] Figure 7 for Figure 6 Another viewpoint; the curtain wall components are in the open state, and the degree of opening is for illustrative purposes only;

[0023] Figure 8 for Figure 6 Viewing the view from another angle reveals the various supporting structures more clearly;

[0024] Figure 9 To conceal most of the components, only a side view and partial exploded view of the energy-absorbing mechanism are shown;

[0025] Figure 10 for Figure 9 Another schematic diagram and partial exploded view; note that although there are two fixed axes 3 in the diagram, they are actually the same element, presented separately according to the conventions of exploded views, and are not different elements;

[0026] Figure 11 for Figure 9 The frontal view in the image.

[0027] Figure Labels

[0028] 1. Minimum energy-absorbing unit

[0029] 2. Securely install the upper frame.

[0030] 3. Fixed shaft

[0031] 4. Stopping component

[0032] 5. First half-energy absorption component

[0033] 6. Second half-energy absorption component

[0034] 7. First opening plate

[0035] 8. Internal tooth arc

[0036] 9. First hinge

[0037] 10. First gear sleeve

[0038] 11. One-way bearing

[0039] 12. Internal friction sleeve

[0040] 13. Second opening plate

[0041] 14. External tooth arc

[0042] 15. Second hinge

[0043] 16. Second gear sleeve

[0044] 17. External friction sleeve

[0045] 18. Water barrier

[0046] 19. Fixed shaft support

[0047] 20. Reinforcing bar

[0048] 21. Reinforcing bar Detailed Implementation

[0049] The present invention will be further described below with reference to the embodiments.

[0050] like Figure 1 As shown, the high-rise building energy-absorbing curtain wall system according to this application includes a fixed installation upper frame 2, a fixed shaft 3 and a stop 4 fixed to the exterior wall of the building, characterized in that: it also includes a minimum energy-absorbing unit 1 installed in a matrix array in the fixed installation upper frame, the stop and the fixed shaft;

[0051] The minimum energy-absorbing unit includes a first half-energy-absorbing component 5 and a second half-energy-absorbing component 6 with different structures. When the wind force reaches a set intensity, the first half-energy-absorbing component and the second half-energy-absorbing component change from a static state to a wind-driven movable state and perform inconsistent movements. There is a contact surface between the first half-energy-absorbing component and the second half-energy-absorbing component. In the above-mentioned movable state, the first half-energy-absorbing component and the second half-energy-absorbing component consume wind kinetic energy through the friction of the contact surface.

[0052] In the cited references 1 and 2, there is generally only one movable minimum wind-driven device. In reference 1, under the action of wind, the kinetic energy of the wind-driven device is converted between the kinetic energy of the device being blown by the wind and the elastic potential energy of the spring. In reference 2, the wind-driven device opens after being blown, allowing ventilation in the curtain wall and reducing the pressure on the curtain wall itself. However, the kinetic energy of the movable device itself remains within the system, and the wind impact on the entire device is not reduced.

[0053] In this application, two movable wind-driven devices are designed as a group, in close contact with each other, and move inconsistently under the action of wind, so as to generate friction and consume the kinetic energy of the wind, thereby achieving the effect of energy absorption.

[0054] The above movement mechanism can be implemented in the following manner:

[0055] Further, the first half energy-absorbing component includes a first opening plate 7 rotatably mounted on the fixed mounting upper frame, and an inner toothed arc 8 is fixedly arranged on the first opening plate 7. The inner toothed arc is an arc-shaped element with the center at the rotation shaft of the first opening plate, and the inner side of the arc is a partial gear. The first half energy-absorbing component further includes a first gear sleeve 9 mounted on a fixed shaft, and a gear is formed on the first gear sleeve to engage with the inner toothed arc. The second half energy-absorbing component includes a second opening plate 13 rotatably mounted on the fixed mounting upper frame, and an outer toothed arc 14 is fixedly arranged on the second opening plate. The outer toothed arc is an arc-shaped element with the center at the rotation shaft of the second opening plate, and the outer side of the arc is a partial gear. The second half energy-absorbing component further includes a second gear sleeve 16 mounted on a fixed shaft, and a gear is formed on the second gear sleeve to engage with the outer toothed arc. An inner friction sleeve 12 is further arranged on the first gear sleeve, and an outer friction sleeve 17 is further arranged on the second gear sleeve. The inner friction sleeve and the outer friction sleeve are sleeved and form a frictional contact surface.

[0056] For details, please refer to Figures 2-5 which schematically shows the mechanical principle and movement relationship of the first and second energy-absorbing units. Without considering their frictional contact surfaces, they are independently movable, and the opening degree of each other is random under wind force, but when opened, they will drive the gear sleeve mounted on the fixed shaft to rotate through the arc gear. Here, the excessive wind force (reaching the opening requirement) is first converted into kinetic energy, and the sleeve pipes arranged on the gear sleeves are sleeved with each other, thereby generating friction. Because the wind movement of the first and second energy-absorbing units is not synchronized, and they are set to move in opposite directions from the mechanical principle level, the friction force reaches the maximum, and the kinetic energy is absorbed as internal energy consumption due to frictional heating.

[0057] In addition to the above core movement relationship, first of all, it is necessary to ensure that the opening plate will not open under a small wind force. Here, the method in document 2 and similar existing technologies can be used:

[0058] Further, the first opening plate and the second opening plate are attached to the stop piece by magnetic force or elastic force, and will only open when the wind force reaches the set magnetic force or clamping elastic force. The first opening plate and the second opening plate are rotatably arranged on the fixed mounting upper frame by a damping hinge.

[0059] The above arrangement allows the movable part not to open frequently under a small wind force, and the opening plate opens under a large wind force, thereby reducing the wind pressure on the curtain wall. In the rotating process, the amplitude of rotation is controlled by the damping hinge to reduce collision and wear.

[0060] After the wind stops, the opening plate needs to be reset as soon as possible, so

[0061] Furthermore, the gears on the first gear sleeve and the second gear sleeve are mounted with an inner friction sleeve and an outer friction sleeve via a one-way bearing 11, and the one-way bearing is selected to transmit torque when the first opening plate and the second opening plate are rotated open, and not to transmit torque when they are reset.

[0062] A one-way bearing is a type of bearing that can rotate freely in one direction but locks in the other. It's also called an overrunning clutch, a name derived from different industries and functions. The metal housing of a one-way bearing contains many rollers, needle rollers, or balls, and the shape of its rolling seats (cavities) allows it to roll only in one direction, while generating significant resistance in the other (hence the term "one-way").

[0063] Therefore, when the gear and friction sleeve are opened under wind force, the transmitted torque causes the two friction tubes to rotate, generating frictional damping; while when resetting, the gear does not drive the friction tubes to rotate, that is, it does not generate damping, allowing the arc teeth and opening plate to reset freely.

[0064] Instruction manual attached Figures 7-11 The diagram shows the assembly relationship of the fixed shaft, gear sleeve, gear, one-way bearing, and friction sleeve. The one-way bearing is longer than usual, resembling a tube. This is because it needs to cover the length of the friction sleeve, and coupled friction sleeves can also be installed between adjacent minimum energy-absorbing units, thus requiring a longer length.

[0065] Friction sleeves should ideally be made of low-cost, easily replaceable materials.

[0066] Furthermore, the outer wall of the inner friction sleeve and the inner wall of the outer friction sleeve are wrapped with a flexible material such as felt, and the flexible material inside the inner friction sleeve and the outer friction sleeve are in close contact.

[0067] The fixed shaft in this design is actually the spindle of each energy-absorbing component. It is subjected to the bending moment of the arc teeth, and a mechanism should be installed to maintain its rigidity during use.

[0068] Furthermore, it also includes multiple fixed shaft supports 19 fixedly installed on the exterior wall of the building to support the fixed shaft.

[0069] Furthermore, a reinforcing rod 20 is provided on the inner arc tooth, and a reinforcing rod 21 is provided on the outer arc tooth.

[0070] The above scheme describes the structure of a minimum energy-absorbing unit. However, the energy-absorbing system in this scheme consists of a matrix of multiple minimum energy-absorbing units. When implementing this system in high-rise buildings, it is necessary to consider that different heights and orientations generally result in significantly different wind forces. The opening force and friction of the components at different locations should be adapted to the relative magnitude of the wind forces commonly encountered at those locations.

[0071] Further, the contact area of the inner and outer friction sleeves in the minimum energy absorption unit at different height positions is different.

[0072] Further, the length of the flexible material in the inner and outer friction sleeves in the minimum energy absorption unit at different height positions is different.

[0073] That is, by cutting the flexible material (felt), the energy absorption unit with different damping amounts can be made to be applied to different positions.

[0074] In order to prevent wind and rain from corroding the transmission mechanism,

[0075] Further, the fixed installation upper frame is further provided with a water blocking edge.

[0076] The water blocking edge is shown in the drawings, and the size is only schematic for convenient observation.

[0077] The above has described one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered to limit the implementation range of the present application. Any equivalent changes and improvements made according to the application scope of the present application should still belong to the patent coverage range of the present application.

Claims

1. A high-rise building energy-absorbing curtain wall system, comprising a fixed installation upper frame, a fixing shaft, and a stopper fixed to the exterior wall of the building, characterized in that: It also includes the smallest energy-absorbing units that are installed in a matrix array in the fixed mounting frame, stops and fixed shaft; The minimum energy-absorbing unit includes a first half-energy-absorbing component and a second half-energy-absorbing component with different structures. When the wind force reaches a set intensity, the first half-energy-absorbing component and the second half-energy-absorbing component change from a static state to a wind-driven movable state and perform inconsistent movements. There is a contact surface between the first half-energy-absorbing component and the second half-energy-absorbing component. In the above-mentioned movable state, the first half-energy-absorbing component and the second half-energy-absorbing component consume wind kinetic energy through the friction of the contact surface. The first semi-energy-absorbing assembly includes a first opening plate rotatably mounted on a fixed mounting frame. An internal toothed arc is fixedly disposed on the first opening plate; the internal toothed arc is an arc-shaped element centered on the rotation axis of the first opening plate, with a portion of a gear on the inner side of the arc. The first semi-energy-absorbing assembly also includes a first gear sleeve mounted on a fixed shaft, with a gear formed on the first gear sleeve that meshes with the internal toothed arc. The second semi-energy-absorbing assembly includes a second opening plate rotatably mounted on a fixed mounting frame. An external toothed arc is fixedly disposed on the second opening plate; the external toothed arc is an arc-shaped element centered on the rotation axis of the second opening plate, with a portion of a gear on the outer side of the arc. The second semi-energy-absorbing assembly also includes a second gear sleeve mounted on a fixed shaft, with a gear formed on the second gear sleeve that meshes with the external toothed arc. An inner friction sleeve is also disposed on the first gear sleeve, and an outer friction sleeve is also disposed on the second gear sleeve; the inner and outer friction sleeves are joined together to form a friction contact surface.

2. The high-rise building energy-absorbing curtain wall system according to claim 1, characterized in that: The first and second opening plates are attached to the stop by magnetic attraction or elastic engagement, and will only open when the wind force reaches the set magnetic force or engagement elastic force; the first and second opening plates are rotatably mounted on the fixed installation frame by damping hinges.

3. The high-rise building energy-absorbing curtain wall system according to claim 1, characterized in that: The gears on the first gear sleeve and the second gear sleeve are mounted on the inner friction sleeve and the outer friction sleeve through one-way bearings. The one-way bearings are selected to transmit torque when the first opening plate and the second opening plate are rotated open, and not to transmit torque when they are reset.

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