Wind load detector and local wind direction guiding device for portal frame building

Abstract

The present application relates to a kind of wind load detector and local wind direction flow guide device of portal frame building, the core design is in the detection force block and guide vane of a group of setting per bay, these guide vanes can be self-adaptively swing under the action of wind force, through complex mechanical structure linkage, adjust own position to reduce the horizontal thrust of building, to effectively reduce the damage of wind force to building.The device is also equipped with wireless transmission module, which provides real-time, accurate wind load data for building operation and maintenance personnel, so that they can respond more quickly and accurately, in addition, by coating the surface of guide vane with materials that enhance wind resistance, and setting buffer device, sensor and special elastic rubber pad, the practicality and durability of this technical solution are enhanced, ensuring its long-term stable operation in severe weather conditions.

Description

Technical Field

[0001] This invention belongs to the field of building inspection technology, and in particular to wind load detection for portal frame buildings and local wind direction diversion devices during strong winds. Background Technology

[0002] Portal frame buildings, due to their design feature of not requiring intermediate supporting columns, are suitable for many scenarios that require large-span spaces. For example, industrial manufacturing and warehousing require large-span spaces to accommodate production lines, equipment, and goods; logistics and distribution centers require large spaces to store, sort, and transport goods; and indoor stadiums and sports venues require large-span spaces to accommodate spectator seating and playing areas.

[0003] Buildings face risks such as natural disasters, chemical corrosion, and accidental collisions after being put into use, which may jeopardize their stability and safety. Regarding natural disasters, typhoons in coastal areas and heavy snow in the northeast can threaten the structure. Portal frame buildings, lacking internal columns, are particularly sensitive to these natural disasters. This is why their frame structures require large cross-sections and thicknesses.

[0004] To ensure the safe and reliable operation of portal frame buildings, load testing is required after completion. Currently, a common method is to use a scaled-down model to simulate load conditions under actual use. However, while this method has advantages, it also has the following drawbacks:

[0005] 1. The mechanical behavior of a structure may differ at different scales, and errors may occur when inferring the performance of a real-size structure from the results of scaled-down model tests.

[0006] 2. Large portal frame structures may exhibit multiple deformation modes, nonlinear behaviors, and multidirectional loads, but scaled-down model tests are insufficient to accurately simulate these factors.

[0007] 3. In scaled-down model tests, material scale effects may affect the results. The mechanical properties of some materials may change at different scales, thus affecting the accuracy of the test.

[0008] In addition, actual load testing is also a load testing method. For example, in the authorization announcement of CN 103115791 B, a performance field testing device for steel portal frame structures is disclosed. However, this testing method needs to be carried out while the factory is vacant, and therefore is no longer applicable after it is put into use.

[0009] Especially in coastal areas, the threat of typhoons is unpredictable. Often, when a super typhoon strikes, temporary reinforcement of the factory's structural framework is required. This places enormous pressure on both workload and personal safety.

[0010] Therefore, it is recommended to strengthen load testing after steel-framed buildings are put into use, and to develop alternative temporary reinforcement measures for sudden typhoon events. Summary of the Invention

[0011] To address the aforementioned problems, this invention provides a real-time, intelligent, and adaptive wind load detection and local wind guidance solution, which greatly improves the stability and safety of buildings in harsh wind environments.

[0012] The objective of this invention is achieved through the following technical solution: a wind load detector and a local wind guidance device for a portal frame building, wherein a set of two first detection force blocks are set in each bay, one end of which is fixed to the tie beam of the portal frame building, and the other end passes through the enclosure and is exposed, and the whole is located at the highest position of the enclosure.

[0013] The deflector plate has one end pivotally connected to two first detection force blocks in the same group, and the other end is a free end;

[0014] A fan-shaped rotating arm is fixed to the pivot mounting point of each guide vane;

[0015] The transmission belt has one end fixed to the fan-shaped rotating arm, and the other end is rotated via a pulley block and fixed to the free end of the guide plate.

[0016] The connecting bar is located on the transmission belt and is fixed between the fan-shaped swing arm and the pulley block;

[0017] The second detection force block is fixed to the free end of the fan-shaped rotating arm of each guide plate;

[0018] The stop device is fixed to each of the second detection force blocks and can be unlocked when the deflector is subjected to wind force.

[0019] When the deflector swings under the action of wind, the deflector is linked with the transmission belt through the connecting strip, which unlocks the stop device and adjusts the position of the deflector to reduce the horizontal thrust on the building. By analyzing the force of the first or second detection force block, the impact of wind load can be assessed and the overall portal frame building can be protected.

[0020] Preferably, the pulley block structure includes at least two traveling tracks with limiting positions at the top; a pulley frame with rollers inside for rolling engagement with the traveling tracks; at least two pulleys rotatably mounted on the pulley frame with parallel axes; of the at least two pulleys, one is used for transition and the other for steering, wherein a spring is radially provided on the mounting shaft of the steering pulley. Technical benefits: The rolling engagement design allows for smoother and more precise adjustment of the deflector, ensuring a rapid and effective response of the deflector and improving system stability.

[0021] Preferably, a device body is detachably fixed to the second detection force block. The device body is long and cylindrical in shape and has a threaded connection to the second detection force block. The device body has a cavity inside to accommodate corresponding accessories.

[0022] The stop latch has one part exposed radially as a free end of the device body, and the other part hidden in the device body. It is hinged to the device body near the middle position by a mounting shaft, and the stop latch has a bevel as an unlocking surface.

[0023] The abutment notch on the connecting bar is used to press down on the exposed locking tongue;

[0024] A locking and releasing assembly, which is elastically slidable up and down within the device body, includes: a slide rod with one end exposed outside the device body and the other end extending upward; an actuator fixed to the slide rod, having an inclined surface matching the unlocking action surface and a telescopically elastic return hook; and an abutting wedge fixed to the pulley frame, the inclined surface of which contacts the lower part of the slide rod. This stopping device structure can be used to lock and unlock the deflector through interaction with the connecting strip when wind loads act on it, thereby adjusting the position of the deflector. Technical effect: It provides an adaptive stopping mechanism for the deflector, enabling it to automatically adjust its position under wind loads, thus improving the building's wind resistance.

[0025] Preferably, the mounting hole in the device body that hinges to the locking bolt is designed as a slotted hole, and an elastic rubber pad is embedded in the slotted hole on the side biased towards the slide bar. Simultaneously, an avoidance notch is provided on the side of the locking bolt near the unlocking surface. Technical effect: Ensures the locking bolt has sufficient elasticity and reliability, avoiding instantaneous impacts caused by strong winds.

[0026] Preferably, a fixed counterweight frame is installed at the lower part of the connecting bar. Technical benefit: This provides a stable weight to ensure the deflector is always in the optimal position, further enhancing system stability.

[0027] Preferably, the surface of the deflector is coated with a material that enhances wind resistance, thereby increasing the deflector's durability and wind resistance. Technical effect: Enhanced durability and wind resistance of the deflector, extending its service life.

[0028] Preferably, a buffer device is installed on the running track to reduce the impact of wind on the pulley block. Technical effect: This provides a buffer mechanism, reduces the impact of wind load, and improves the stability and durability of the entire system.

[0029] Preferably, a sensor is installed between the reset hook and the unlocking surface. When the unlocking surface contacts the reset hook, the sensor emits a signal. Technical benefits: This ensures the system remains in optimal operating condition under wind loads and provides a method for real-time monitoring of the system's operating status.

[0030] Preferably, the elastic pad is made of silicone rubber, which is designed to provide excellent aging resistance and shock absorption. Technical benefit: It provides a highly durable and effective shock-absorbing material, ensuring the long-term stability of the stopping device.

[0031] Preferably, both the first and second wind load detection blocks are equipped with wireless transmission modules to transmit wind load data to the central control system in real time. Technical benefit: This provides a method for real-time monitoring of wind loads in portal frame buildings, ensuring the safety of the building.

[0032] In summary, the present invention has the following advantages compared with the prior art:

[0033] For existing portal frame buildings, traditional wind load detection and adjustment technologies are often passive, fixed, or slow to respond. However, the device of this invention provides a more intelligent, adaptive, and real-time responsive method for wind load detection and adjustment.

[0034] Dynamic wind direction adjustment: Traditional steel-framed buildings often rely on passive protection or fixed wind deflection measures when facing strong wind loads. However, the wind load detectors and localized wind deflection devices mentioned here can monitor wind direction and speed in real time and dynamically adjust the position of the deflectors. This adjustment method can reduce the lateral impact of wind on the building, thereby lowering the risk to the building structure, and effectively improve the building's wind resistance performance.

[0035] Enhanced pulley design: By employing a specific pulley block structure, the movement of the deflector becomes more flexible and smooth. This not only accelerates the deflector's response speed but also ensures its continuous and stable operation in complex wind environments.

[0036] Adaptive stop device: This design ensures that the deflector can be quickly and accurately locked or adjusted in the face of sudden strong winds, thereby greatly enhancing the stability and reliability of the system.

[0037] Enhanced durability: By coating the surface of the deflector with a material that enhances wind resistance, the durability and windproof performance of the deflector are further improved, making it more adaptable to various harsh climatic conditions.

[0038] Real-time data transmission and monitoring: By equipping the system with a wireless transmission module, wind load data can be transmitted to the central control system in real time. This not only facilitates real-time monitoring but also provides building managers with real-time feedback on the building's wind load status, enabling timely intervention or maintenance.

[0039] Optimized mechanical response and damping: By introducing specific elastic pads and other related structural designs, the device's ability to absorb and dampen sudden wind loads is enhanced, further ensuring the stability and safety of the building.

[0040] In summary, this novel wind load detector and local wind guidance device provides a more efficient, intelligent, and adaptive wind resistance solution for portal frame buildings. Compared to traditional methods, this technology better ensures the stability and safety of buildings in harsh wind environments, reducing structural risks caused by wind loads. Attached Figure Description

[0041] Figure 1 A structural schematic diagram of a portal frame building using existing technology;

[0042] Figure 2 A schematic diagram of the structure after installing wind load detectors and local wind guidance devices on both sides of a portal frame building;

[0043] Figure 3 This is a partial structural diagram of a portal frame building after wind load detectors and local wind guidance devices have been installed on both sides.

[0044] Figure 4 yes Figure 2 A magnified view of a section at point A in the middle;

[0045] Figure 5 yes Figure 3 A magnified view of a section at point B in the middle;

[0046] Figure 6 These are exploded views of the components of a local wind deflector device;

[0047] Figure 7 These are exploded views of some components of the stop device;

[0048] Figure 8 This is one of the state diagrams of the stop device during operation;

[0049] Figure 9 This is a schematic diagram of the pulley system.

[0050] Marked in the image:

[0051] Top plate 001, perimeter wall 002, ground 003, skirt wall 01, main frame 02, portal unit 021, tie rod 022, span beam 023, column 024, tie beam 025, first detection force block 10, guide plate 20, fan-shaped swing arm 21, transmission belt 22, connecting strip 23, pulley block 30, walking track 31, pulley frame 32, pulley 33, second detection force block 40, stop device 50, device body 51, stop lock tongue 52, unlocking action surface 53, locking and releasing assembly 54, slide rod 541, actuator 542, reset hook 543, contact notch 55, contact inclined block 56, elastic rubber pad 60, avoidance notch 70, counterweight frame 80. Detailed Implementation

[0052] The present invention will now be further described with reference to the embodiments illustrated in all the accompanying drawings:

[0053] Example 1

[0054] like Figure 1 The diagram illustrates the general outline of a standard portal frame building. For clarity, the roof slab 001 and surrounding walls 002 (including doors and windows) that form the external enclosure are omitted. The building primarily consists of a skirt wall 01 erected on the ground 003 and a main frame 02 mounted on it. The main frame 02 comprises several portal units 021, with each pair of adjacent units forming a bay, with standard dimensions ranging from 3 to 6 meters. Each pair of portal units 021 is stably connected by tie rods 022. Each portal unit 021 includes span beams 023, columns 024, and tie beams 025 connecting them.

[0055] See Figure 2 It depicts the condition after wind load detectors and local wind deflectors are installed on both sides of a portal frame building. For simplicity, the main frame 02 is omitted from the figure. The wind load and deflector devices include:

[0056] Each bay is equipped with a set of two first detection force-bearing blocks 10, wherein one end of each force-bearing block 10 is fixed to the tie beam 025, and the other end passes through the enclosure 002 and is exposed. The entire first detection force-bearing block 10 is located at the highest position of the enclosure 002.

[0057] One end is pivotally mounted on two first detection force-bearing blocks 10 in the same group, and the other end is a free downward guide plate 20;

[0058] A fan-shaped rotating arm 21 is fixedly connected to each pivot mounting point of each guide vane 20;

[0059] One end is fixed to the fan-shaped rotating arm 21, and the other end extends downward and is wound around and turned by a pulley block 30 before being fixed to the free end of the guide plate 20.

[0060] A connecting strip 23 is fixed on each drive belt 22 and located between the fan-shaped swing arm 21 and the pulley block 30;

[0061] A second detection force block 40 is fixedly connected to the free end of each fan-shaped rotating arm 21 corresponding to each guide plate 20;

[0062] A stop device 50 is fixedly connected to each of the second detection force blocks 40;

[0063] refer to Figure 4 and Figure 5 Under normal circumstances, the deflector 20 has a small space on one side that rests against the surrounding panel, and the end of the connecting strip 23 is at or near the skirt wall 01 and suspends a weight. The stop device 50 can be similar to an umbrella structure, which can be opened and locked, so that the stop device 50 can be engaged and unlocked by the downward gravity of the weight suspended on the connecting strip 23. When the deflector 20 swings under the action of wind, it will trigger the stop device 50 to unlock.

[0064] When strong winds arrive, the deflector 20 is affected by the wind force and unlocks the stop device 50. The connecting bar 23 drives the transmission belt 22 downward, and the transmission belt 22 drives the fan-shaped swing arm 21 to swing and move the pulley block 30 upward. The deflector 20 changes from a vertical plane against the enclosure to a sloped state with its lower part open. In this way, the strong wind is guided by the slope to reduce the horizontal thrust and protect the overall portal frame building.

[0065] When conducting wind load testing, equipment such as total stations, strain gauges, and digital cameras are installed inside the portal frame building. The stop device 50 fixed to the second test force block 40 is removed, and a measurable thrust is applied externally to the first test force block 10 or the second test force block 40. The internal instruments measure the displacement values ​​to perform force analysis and calculation in order to obtain the safety assessment results.

[0066] The pulley block 30 can be any of the known technologies; in this embodiment, reference is made to... Figure 6 and Figure 9 The specific configuration includes: at least two travel tracks 31 with upper limits; a pulley frame 32 for mounting pulleys with rollers rolling into the travel tracks 31; at least two pulleys 33 with parallel axes and rotatably mounted on the pulley frame 32; one of the two pulleys 33 is used for transition and the other for steering; the pulley used for steering has a spring in the radial direction of its mounting axis for the purpose of providing cushioning.

[0067] Similarly, the stop device 50 can be any of the known technologies; preferably, in this embodiment, refer to... Figure 6 and Figure 7 The stop device is specifically configured to include:

[0068] The device body 51 is detachably fixed to the second detection force block 40; the device body 51 is cylindrical in shape, and the connection between the device body 51 and the second detection force block 40 is a threaded connection. After the connection is made, the device body 51 and the second detection force block 40 are at a certain angle. This angle is from... Figure 4 When the deflector 20 is in the retracted state, that is, when the deflector 20 is basically parallel to the enclosure, the unconnected end of the device body 51 points to the pulley frame 32. This design helps to set the trigger of the stop device 50. In addition, the device body 51 has a cavity inside to accommodate the corresponding accessories. The size and shape of the cavity are set according to the space requirements of the corresponding action parts.

[0069] One part is exposed radially as a free end of the device body 51, while the other part is hidden in the device body 51 by the stop latch 52. The stop latch 52 is connected to the device body 51 via a mounting shaft near its middle position as a hinge point; see reference. Figure 7 Overall, the stop latch 52 is hinged to the device body 51 at a certain angle. This angle makes the upward side of the stop latch 52 become an inclined surface and the section of the inclined surface near the highest position is used as the unlocking surface 53.

[0070] The abutment notch 55 is provided on the connecting bar 23. When the weight is applied downwards, the abutment notch 55 is used to press down on the exposed locking tongue 52.

[0071] With reference to the hinge point of the stop latch 52, a locking and releasing assembly 54 is provided in the device body 51 on the side near the unlocking action surface 53, which can be elastically slid up and down. The locking and releasing assembly 54 includes a slide rod 541 with one end exposed outside the device body 51 and the other end extending upward and exceeding the height of the unlocking action surface 53, and an actuator 542 with another action surface located above the unlocking action surface 53, which is partially fixed on the slide rod 541. The actuator 542 has an inclined surface that matches the unlocking action surface 53, and the end of the actuator 542 is provided as a reset hook 543 with telescopic elasticity.

[0072] An abutting inclined block 56 is fixedly installed on the pulley frame 32. The inclined surface of the abutting inclined block 56 contacts the lower part of the slide rod 541, and the height direction of the inclined surface is towards the travel track 31.

[0073] Operating principle of the local wind diversion device: Under normal conditions, the actuator 542 rests against the unlocking surface 53 under the elastic pressure of the slide rod 541. Under this contact, the exposed end of the stop tongue 52 will not rotate due to the downward pressure. When the wind force on the guide plate 20 is greater than the friction between the contact notch 55 and the contact surface of the stop tongue 52, the guide plate 20 will move inward. The displacement of the guide plate 20 will cause the entire stop device 50 to move. As a result, the lower part of the slide rod 541 will contact the inclined surface of the contact block 56, and the slide rod 541 will be pushed upward. The actuator 542 will gradually move upward away from the unlocking surface 53 until the reset hook 543 on the actuator 542 contacts the unlocking surface 53. 3. With elastic extension and retraction, under the downward pressure of the exposed end of the stop latch 52, the stop latch 52 will rotate downwards while pushing the reset hook 543 to move, thus disengaging the stop latch 52 from the contact notch 55. The connecting strip 23 will fall rapidly under the action of the suspended weight. Simultaneously, the transmission belt 22 will move downwards and drive the fan-shaped rotating arm 21 to rotate. The movement of the transmission belt 22 will also cause the pulley block 30 to move upwards, and the guide plate 20 will change from a vertical plane against the enclosure to an inclined state with its lower part open. In this way, the strong wind is guided by the inclined plane, reducing the horizontal thrust and protecting the overall portal frame structure.

[0074] When the downward pressure of the stop latch 52 is released, the elastic extension of the reset hook 543 will rotate the stop latch 52 back to its original position, and at the same time the slide bar 541 will also be reset under the pressure of the elastic extension.

[0075] Given that the load suspended by the connecting strip 23 is relatively heavy in actual use, to optimize the sensitivity of the guide plate 20 to displacement caused by wind force, a movable space is also provided between the device body 51 and the stop latch 52. The wind force is designed to overcome the resistance between the device body 51 and the stop latch 52 less than the friction force between the stop latch 52 and the contact notch 55. Specifically, the mounting hole in the device body 51 that hinges to the stop latch 52 is designed as a waist hole, and an elastic pad 60 is embedded in the waist hole on the side biased towards the slide rod 541. Simultaneously, an avoidance notch 70 is provided on the side of the stop latch 52 near the unlocking surface 53. With this design, the wind force only needs to overcome the elasticity of the elastic pad 60 before the local wind direction guiding device can be unlocked.

[0076] Preferably, the lower part of the connecting strip 23 is detachably fixed to the counterweight frame 80, so that the counterweight frame 80 can flexibly place the required heavy objects, such as water, stones, or be used as a flower bed.

[0077] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A wind load detection and local wind guidance device for portal frame buildings, characterized in that: Each bay is equipped with a set of two first detection force blocks (10), one end of which is fixed to the tie beam (025) of the portal frame building, and the other end passes through the enclosure (002) and is exposed, and the whole is located at the highest position of the enclosure (002). The guide plate (20) has one end pivotally connected to two first detection force blocks (10) in the same group, and the other end is a free end; A fan-shaped swing arm (21) is fixed to the pivot mounting point of each guide vane (20); The transmission belt (22) has one end fixed to the fan-shaped rotating arm (21) and the other end rotated via the pulley block (30) and fixed to the free end of the guide plate (20); The connecting bar (23) is located on the transmission belt (22) and fixed between the fan-shaped rotating arm (21) and the pulley block (30); The second detection force block (40) is fixed to the free end of the fan-shaped rotating arm (21) of each guide plate (20); The stop device (50) is fixed to each second detection force block (40) and can be unlocked when the guide plate (20) is subjected to wind force; When the deflector (20) swings under the action of wind, the deflector (20) is linked with the transmission belt (22) through the connecting strip (23) to unlock the stop device (50), thereby adjusting the position of the deflector (20) to reduce the horizontal thrust on the building. By analyzing the force on the first detection force block (10) or the second detection force block (40), the impact of wind load can be assessed and the overall portal frame building can be protected.

2. The wind load detection and local wind guidance device for portal frame buildings according to claim 1, characterized in that, The pulley block (30) structure includes at least two traveling tracks (31) with limiting at the upper part; a pulley frame (32) with rollers inside for rolling engagement with the traveling tracks (31); at least two pulleys (33) are rotatably mounted on the pulley frame (32) with parallel axes; of the at least two pulleys (33), one pulley is used for transition and the other pulley is used for steering, wherein a spring is provided radially on the mounting shaft of the pulley used for steering.

3. The wind load detection and local wind guidance device for portal frame buildings according to claim 2, characterized in that, A device body (51) is detachably connected to the second detection force block (40). The device body (51) is long cylindrical in shape and has a threaded connection to the second detection force block (40). The device body (51) has a cavity inside to accommodate corresponding accessories. The stop latch (52) has a portion of its free end exposed radially to the device body (51), and another portion is hidden in the device body (51). It is hinged to the device body (51) via a mounting shaft near its middle position, and the stop latch (52) has a bevel as an unlocking surface (53). An abutment notch (55) is provided on the connecting bar (23) for pressing down on the exposed locking tongue (52); The locking and releasing assembly (54), which is elastically slidably disposed in the device body (51), includes: a slide rod (541) with one end exposed outside the device body (51) and the other end extending upward; an actuator (542) fixed on the slide rod (541), which has an inclined surface matching the unlocking action surface (53) and is provided with a telescopically elastic reset hook (543); and an abutting inclined block (56) fixed on the pulley frame (32), the inclined surface of which contacts the lower part of the slide rod (541). The structure of the stop device (50) can be used to lock and unlock the deflector (20) by interacting with the connecting strip (23) when the wind load acts on the deflector (20), thereby adjusting the position of the deflector (20).

4. According to the claims 3 The wind load detection and local wind guidance device for portal frame buildings is characterized in that, The mounting hole in the device body (51) that is hinged to the stop lock tongue (52) is set as a waist hole, and an elastic rubber pad (60) is embedded in the waist hole on the side biased towards the slide bar (541). At the same time, an avoidance notch (70) is set on the side of the stop lock tongue (52) near the unlocking action surface (53).

5. The wind load detection and local wind guidance device for portal frame buildings according to claim 1, characterized in that, The lower part of the connecting strip (23) is detachably connected to a counterweight frame (80).

6. The wind load detection and local wind guidance device for portal frame buildings according to claim 1, characterized in that, The surface of the deflector (20) is coated with a material that enhances wind resistance to increase the durability and wind resistance of the deflector (20).

7. The wind load detection and local wind guidance device for portal frame buildings according to claim 2, characterized in that, The walking track (31) is equipped with a buffer device to reduce the impact of the pulley block (30) on the wind.

8. The wind load detection and local wind guidance device for portal frame buildings according to claim 3, characterized in that, A sensor is provided between the reset hook (543) and the unlocking surface (53). When the unlocking surface (53) contacts the reset hook (543), the sensor sends a signal.

9. The wind load detection and local wind guidance device for portal frame buildings according to claim 4, characterized in that, The elastic pad (60) is made of silicone rubber and is designed to provide excellent aging resistance and shock absorption.

10. The wind load detection and local wind guidance device for portal frame buildings according to claim 1, characterized in that, The first and second force-sensing blocks (10 and 40) are both equipped with wireless transmission modules for transmitting wind load data to the central control system in real time.

Images