CN107643647B

CN107643647B - Wind pressure resistant device applied to urban canopy

Info

Publication number: CN107643647B
Application number: CN201710829823.9A
Authority: CN
Inventors: 彭泽巍; 李志雄; 袁奇麒; 李雯
Original assignee: Guangzhou Leafun Culture Science and Technology Co Ltd
Current assignee: Guangzhou Leafun Culture Science and Technology Co Ltd
Priority date: 2017-09-13
Filing date: 2017-09-13
Publication date: 2020-06-05
Anticipated expiration: 2037-09-13
Also published as: CN107643647A

Abstract

The invention discloses an anti-wind pressure device applied to an urban canopy, which comprises a limiting sleeve, at least one connecting assembly and a vertical shaft. One end of the limiting sleeve is provided with an accommodating cavity with an upward opening, and the other end of the limiting sleeve is fixedly arranged on the ground. Each coupling assembling all locates this and accepts the intracavity, and each coupling assembling all includes elastic component and compresses tightly the piece with this elastic component is connected. The vertical shaft comprises a first end and a second end which are oppositely arranged, the first end is used for connecting a curtain, the second end can be connected with the containing cavity in a sliding mode, and when the second end is located in the containing cavity in a sliding mode, the pressing piece is abutted to the second end. When the wind power value that this curtain received is greater than the biggest stress value of this first end, the vertical scroll breaks away from and accepts the chamber, and the traction force that the curtain received reduces, and the wind pressure that receives also reduces. The wind pressure resistant device provided by the invention has good wind pressure resistance, so that the curtain is not easy to break under strong wind pressure, the integral visual effect of performance is ensured, and safety accidents are avoided.

Description

Wind pressure resistant device applied to urban canopy

Technical Field

The invention relates to the technical field of urban canopy curtains, in particular to an anti-wind pressure device applied to an urban canopy curtain.

Background

With the improvement of living standard of people, many large-scale performances (such as large-scale singing and dancing performances, light shows and the like) are often held to enrich the lives of people. These large performances often use a curtain as a background of the performance, usually a specific background picture is displayed by projecting slides or lights on the curtain, and the curtain serving as the background of the performance and the rack on which the curtain is set up are called city sky curtains.

Because most current large-scale performance all is held in the open air, consequently need consider special weather condition, for example when strong wind weather appears, if not in time pack up the curtain, probably cause the curtain damaged, more even probably cause the whole support body that supports the curtain to empty to cause serious incident. Therefore, in order to avoid the occurrence of safety accidents, most of the related technical personnel can form a plurality of holes on the curtain when designing the curtain, and the holes are utilized to reduce the wind pressure acting on the curtain, thereby enhancing the wind-proof capability of the curtain. However, when the screen is subjected to light projection or picture projection, the hole part on the screen cannot present an image or a light effect, so that the overall visual effect of the performance is seriously affected.

Disclosure of Invention

The embodiment of the invention discloses a wind pressure resistant device applied to an urban canopy, which has good wind pressure resistant capability and can effectively prevent the condition that a curtain is damaged or a frame body collapses.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a wind pressure resistant device applied to urban canopy is characterized by comprising

One end of the limiting sleeve is provided with an accommodating cavity with an upward opening, and the other end of the limiting sleeve is fixedly arranged on the ground;

the connecting components are arranged in the accommodating cavity and comprise elastic pieces and pressing pieces connected with one ends of the elastic pieces, the other ends of the elastic pieces are connected to the inner wall surface of the accommodating cavity, and the pressing pieces are arranged towards the center of the accommodating cavity;

the vertical shaft comprises a first end and a second end which are oppositely arranged, the first end is used for being connected with a curtain, the second end can be connected with the accommodating cavity in a sliding mode, and when the second end is located in the accommodating cavity in a sliding mode, the pressing piece abuts against the second end;

when the wind power value of the curtain is larger than the maximum stress value of the first end, the second end extrudes the pressing piece under the action of the first end, so that the pressing piece extrudes the elastic piece and is separated from the second end, and at the moment, the second end can be separated from the accommodating cavity in a sliding mode.

The maximum stress value of the first end is the maximum tension value of the first end to the curtain when the curtain is subjected to strong wind pressure.

As an optional implementation manner, in an embodiment of the present invention, the connection assembly further includes a hollow connection sleeve, the elastic member is fixedly disposed in the connection sleeve, the compressing member is slidably connected to the connection sleeve, and when the second end is located in the receiving cavity, the compressing member can slide to a position partially outside the connection sleeve and abut against the second end; when the second end presses the pressing piece under the action of the first end, the pressing piece presses the elastic piece and is separated from the second end, and at the moment, the second end can be separated from the containing cavity in a sliding mode.

As an optional implementation manner, in an embodiment of the present invention, one end of the connecting sleeve is fixedly connected to an inner wall surface of the accommodating cavity, the other end of the connecting sleeve is obliquely contracted toward a center of the accommodating cavity and forms a contraction opening, and when the second end is located in the accommodating cavity, the pressing member can slide to a position partially located outside the contraction opening and abut against the second end; when the second end presses the pressing piece under the action of the first end, the pressing piece slides into the contraction opening and presses the elastic piece, and at the moment, the second end can slide and be separated from the accommodating cavity.

As an optional implementation manner, in an embodiment of the present invention, the pressing member is a sphere or a wedge, the elastic member is a spring, and the pressing member and the elastic member are connected by a connecting plate.

As an optional implementation manner, in an embodiment of the present invention, a groove corresponding to the pressing member is disposed on the vertical shaft, and when the second end is slidably located in the accommodating cavity, the pressing member is engaged with the groove.

As an optional implementation manner, in an embodiment of the present invention, the curtain is provided with a plurality of windproof holes and a plurality of shielding members corresponding to the windproof holes, each shielding member includes a connecting portion and a covering portion fixedly connected to the connecting portion, each connecting portion is fixedly connected to the curtain, each covering portion is used for covering each corresponding windproof hole, and when the curtain is subjected to a wind pressure, each covering portion can swing back and forth relative to the plane of the curtain to expose each corresponding windproof hole.

As an optional implementation manner, in an embodiment of the present invention, the curtain is cut along a preset track to form the covering portion, and an area between the preset track and the connecting portion forms the windproof hole.

The curtain can be applied to the urban canopy, and for example, the curtain can be hung and fixed on a truss of the urban canopy. Because city sky curtain sets up in the open air mostly, like seaside, lake limit, river limit etc, consequently, the curtain will probably receive the wind pressure effect that comes from different directions, works as the curtain receives when the wind pressure is used, it is relative to cover portion the curtain plane swing back and forth to expose prevent wind hole to make wind pass through prevent wind hole reduces the wind pressure that the curtain bore, and then the reinforcing the emergence of incident is avoided to the stretching resistance of curtain.

Wherein, cover portion can be relative the curtain plane back and forth movement mainly means, acts on when wind during the curtain, because cover portion is through connecting portion with the curtain rigid coupling, consequently, cover portion can receive with the equal wind pressure effect of curtain to make cover portion swing along with the wind direction. When the curtain is subjected to forward wind pressure from front to back, the covering part swings backwards relative to the curtain in the windproof hole, so that the windproof hole is exposed; and when the wind pressure is reduced or the curtain is subjected to reverse wind pressure from back to front, the covering part swings forwards relative to the curtain in the windproof hole. In addition, when the curtain is subjected to lateral wind pressure, the covering part can be rolled up along with the wind direction to expose the wind-proof hole.

As an optional implementation manner, in an embodiment of the present invention, the curtain includes a top end and a bottom end that are disposed opposite to each other, a distance from at least a highest point of a position where the connecting portion is connected to the curtain to the top end is smaller than a distance from the covering portion to the top end, and when the curtain is subjected to a wind pressure, the covering portion can swing back and forth relative to the connecting portion.

As an optional implementation manner, in an embodiment of the present invention, the curtain includes a first polyvinyl chloride layer, a fiber layer, and a second polyvinyl chloride layer stacked in sequence, where a plurality of fibers in the fiber layer are orthogonally arranged to form a warp-weft structure, the windproof holes are sequentially arranged at equal intervals according to weft in the warp-weft structure in the length extending direction of the curtain, and are sequentially arranged at equal intervals according to warp in the warp-weft structure in the width extending direction of the curtain, and the center of each windproof hole is located at an intersection of the weft and the warp.

As an optional implementation manner, in the embodiment of the present invention, the sum of the areas of each of the windproof holes on the curtain is 60% to 80% of the planar area of the curtain.

As an optional implementation manner, in an embodiment of the present invention, an end plate is disposed on the first end, a through hole is disposed on the curtain, a steel wire rope is disposed through the through hole, and the through hole is connected to the end plate through the steel wire rope.

As an optional implementation manner, in an embodiment of the present invention, the wind pressure resistant apparatus further includes a pool bottom embedded plate, the pool bottom embedded plate is fixed on the ground, and the pool bottom embedded plate is fixedly connected to the other end of the position limiting sleeve.

As an optional implementation manner, in an embodiment of the present invention, an extension plate is disposed at the other end of the position limiting sleeve, and the extension plate is fixedly connected to the pool bottom embedded plate.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

according to the wind-resistant device applied to the urban canopy, the curtain is fixed to the first end of the vertical shaft, then the second end of the vertical shaft is connected with the pressing piece arranged in the containing cavity of the limiting sleeve, and the vertical shaft is fixed in the containing cavity of the limiting sleeve. When the wind pressure that the curtain bore is greater than the maximum value that the curtain can bear the wind pressure, the curtain receives the wind pressure effect and pulls the first end of vertical scroll to make first end pull the second end extrusion that drives the vertical scroll and compress tightly the piece, make and compress tightly the second end that the piece slided and keeps away from the vertical scroll, thereby realize that the vertical scroll breaks away from the stop collar, at this moment, the one end that the vertical scroll was connected to the curtain is in the free state of waving, thereby effectively reduce the wind pressure that the curtain received, avoid appearing the curtain damage or the support body condition of empting.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a wind pressure resisting device (omitting a vertical shaft) applied to an urban canopy according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a wind pressure resisting device (wind holes on the curtain are not shown) applied to an urban canopy according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an anti-wind device (wind-proof holes on a curtain are not shown) at the moment of disengaging a vertical shaft according to an embodiment of the present invention;

fig. 4 is a partial schematic view of a connecting assembly (a pressing member is a ball) disclosed in the embodiment of the invention;

fig. 5 is a partial schematic view of a connecting assembly (the pressing member is a wedge) disclosed in the embodiment of the invention;

FIG. 6 is a schematic structural diagram of a curtain (not subjected to wind pressure) according to an embodiment of the present invention;

FIG. 7 is a schematic view of a stack of layers of a curtain as disclosed in an embodiment of the invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

FIG. 9 is a schematic structural diagram of a connection track between a connection portion and a curtain according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a tear-resistant structure according to an embodiment of the present invention;

FIG. 11 is a schematic illustration of an alternative tear resistant feature in accordance with an embodiment of the present invention;

FIG. 12 is a schematic view of the covering portions and the wind-proof holes when wind pressure is applied to the curtain according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The following detailed description is made with reference to the accompanying drawings.

Fig. 1 to fig. 3 are schematic structural diagrams of an anti-wind pressure device applied to an urban canopy according to an embodiment of the present invention. The wind pressure resisting device applied to the urban canopy comprises a limiting sleeve 1, at least one connecting assembly and a vertical shaft 3. One end of the position limiting sleeve 1 is provided with an accommodating cavity 11 with an upward opening, and the other end of the position limiting sleeve 1 is fixedly arranged on the ground. Each connecting component is arranged in the containing cavity 11, each connecting component comprises an elastic piece 22 and a pressing piece 23 connected with one end of the elastic piece 22, the other end of the elastic piece 22 is connected to the inner wall surface of the containing cavity 11, and each pressing piece 23 faces the center of the containing cavity 11. The vertical shaft 3 includes a first end 31 and a second end 32, which are oppositely disposed, the first end 31 is used for connecting the curtain 5, the second end 32 is slidably connected to the accommodating cavity 11, and when the second end 32 is slidably located in the accommodating cavity 11, the pressing member 23 abuts against the second end 32.

When the wind force value of the curtain 5 is greater than the maximum force value of the first end 31, the second end 32 presses the pressing member 23 under the action of the first end 31, so that the pressing member 23 presses the elastic member 22 and is separated from the second end 32, and at this time, the second end 32 can be separated from the accommodating cavity 11 in a sliding manner.

Wherein, this city canopy can include the truss and the aforesaid curtain that are used for setting up above-mentioned curtain.

The maximum stress value of the first end 31 is the maximum tension value of the first end 31 to the curtain 5 when the curtain 5 is subjected to strong wind pressure.

Specifically, when the vertical shaft 3 is located in the receiving cavity 11 of the position limiting sleeve 1, the curtain 5 is in an unfolded state at this time because the lower end of the curtain 5 is connected with the first end 31 of the vertical shaft 3 and the upper end of the curtain 5 is connected with the frame body. When wind blows towards the curtain 5 and the curtain 5 is subjected to wind pressure, the two sides of the curtain 5 can be tightened, and when the wind pressure is increased, the traction force on the two sides of the curtain 5 is increased, so that the traction force of the vertical shaft 3 connected with the lower end of the curtain 5 facing upwards vertically is provided, and the vertical shaft 3 tends to move upwards. When the wind pressure reaches the maximum wind pressure value which can be borne by the curtain 5, under the action of the upward movement tendency of the vertical shaft 3, the pressing piece 23 is extruded and compresses the elastic piece 22, the pressing piece 23 displaces in the direction departing from the center of the accommodating cavity 11 and is separated from the vertical shaft 3, at the moment, the vertical shaft 3 can slide to be separated from the accommodating cavity 11, and then the vertical shaft 3 is separated from the limiting sleeve 1.

In this embodiment, the other end of the limiting sleeve 1 is provided with an extension plate 12, and the wind pressure resisting device further comprises a pool bottom embedded plate 4, the pool bottom embedded plate 4 is fixed on the ground, and the extension plate 12 is fixedly connected with the pool bottom embedded plate 4. Specifically, the extension plate 12 is provided with two screw holes, and bolts are inserted into the two screw holes to fixedly connect the extension plate 12 with the pool bottom embedded plate 4 so as to fix the position-limiting sleeve 1 on the ground.

The design that the extension plate 12 is arranged on the limiting sleeve 1 is adopted, the limiting sleeve 1 can be fixedly connected with the embedded plate 4 at the bottom of the pool through the extension plate 12, and therefore the limiting sleeve 1 is fixed on the ground.

In this embodiment, the connecting assembly further includes a hollow connecting sleeve 21, the elastic member 22 is fixedly disposed in the connecting sleeve 21, the pressing member 23 is slidably connected to the connecting sleeve 21, when the second end 32 is located in the accommodating cavity 11, the pressing member 23 can be slid to be partially located outside the connecting sleeve 21 and abut against the second end 32, at this time, the second end 32 can be firmly located in the accommodating cavity 11 due to the abutting action of the pressing member 23, so as to fix the lower end of the curtain 5.

When the curtain 5 receives the wind pressure effect and is greater than the biggest wind pressure that its self can bear, the first end 31 of being connected with the curtain 5 lower extreme receives the effect of curtain 5 traction force that makes progress, drives second end 32 upward movement for second end 32 extrudes pressing member 23 under the effect of first end 31, thereby makes pressing member 23 extrusion elastic component 22 and with the separation of second end 32, at this moment, second end 32 slidable breaks away from and accepts chamber 11. Specifically, the pressing member 23 is pulled upward by the second end 32, the pressing member 23 is pressed and displaced in a direction away from the center of the accommodating cavity 11, the elastic member 22 is compressed, the pressing member 23 is separated from the second end 32, and the second end 32 is separated from the accommodating cavity 11 by the upward pulling force.

By adopting the design, the pressing piece 23 is used for extruding the elastic piece 22, and the pressing piece 23 can slide in the connecting sleeve 21 through the elastic deformation of the elastic piece 22, so that the connection between the pressing piece 23 and the vertical shaft 3 is realized, and the connection between the vertical shaft 3 and the limiting sleeve 1 is further realized; or the pressing piece 23 is separated from the vertical shaft 3, and further the vertical shaft 3 is separated from the limiting sleeve 1.

Preferably, the wind pressure resistant device is provided with six connecting components, each connecting component is arranged in the accommodating cavity 11 in a circular arrangement at the center of the accommodating cavity 11, and the included angle between two adjacent connecting components and the center of the accommodating cavity 11 is 60 degrees. The maximum traction force value born by the curtain 5 is 2940-3920N, and the six connecting assemblies are adopted to respectively abut against the second end 32 of the vertical shaft 3 from six directions, so that when the vertical shaft 3 is positioned in the limiting sleeve 1, the vertical shaft can be firmly fixed in the limiting sleeve 1.

In this embodiment, one end of the connecting sleeve 21 is fixed to the inner wall surface of the accommodating cavity 11, the other end of the connecting sleeve 21 is inclined and contracted towards the center of the accommodating cavity 11 to form a contraction port 21a, and when the second end 32 is located in the accommodating cavity 11, the pressing member 23 can slide to be partially located outside the contraction port 21a and abut against the second end 32; when the second end 32 presses the pressing member 23 by the first end 31, the pressing member 23 slides into the contraction port 21a and presses the elastic member 22, and at this time, the second end 32 can slide out of the accommodation chamber 11.

In this embodiment, the pressing member 23 is a ball or a wedge. When the pressing member 23 is a sphere, taking the opening shape of the constricting orifice 21a as a circle as an example, the diameter h1 of the constricting orifice 21a is smaller than the sphere diameter h2 of the pressing member 23 (as shown in fig. 4). Adopt above-mentioned design, shrink mouth 21a can play limiting displacement to pressing piece 23, even when elastic component 22 and pressing piece 23 set up for the components of a whole that can function independently, elastic component 22 extension compression pressing piece 23 for when pressing piece 23 and popping out toward the center direction of acceping chamber 11, also can be because shrink mouth 21 a's limiting displacement makes pressing piece 23 can not whole stretch out shrink mouth 21a, and then avoids pressing piece 23 whole to pop out outside adapter sleeve 21.

When the pressing member 23 is a wedge, taking the opening of the constricting orifice 21a as a square as an example, the pressing member 23 has a first end surface 23a and a second end surface 23b which are oppositely arranged, the side length h3 of the first end surface 23a is greater than the side length h1 of the opening section of the constricting orifice 21a, and the side length h4 of the opening section of the constricting orifice 21a is greater than the side length h4 of the second end surface 23b, so as to ensure that the constricting orifice 21a can limit the pressing member (as shown in fig. 5).

In the embodiment, the elastic member 22 is a spring, and the pressing member 23 and the elastic member 22 are connected by a connecting plate 22a, so that the interaction force between the pressing member 23 and the elastic member 22 is more uniform.

In this embodiment, the vertical shaft 3 is provided with a groove 33 corresponding to the pressing piece 23, and when the second end 32 is slidably located in the accommodating cavity 11, the pressing piece 23 is engaged with the groove 33.

In particular, the shape of the groove 33 corresponds to the shape of the pressing piece 23, such as: when the pressing piece 23 is a sphere, the groove 33 is an arc-shaped groove, so that the pressing piece 23 and the groove 33 can be tightly attached when in butt joint, and the fixing of the vertical shaft 3 by the pressing piece 23 through the clamping groove 33 is facilitated. Of course, the groove 33 may also be a dovetail groove, in which case the pressing member 23 is a wedge-shaped block, and the second end surface 23b of the pressing member 23 completely fits the groove 33.

In this embodiment, the end plate 34 is disposed on the first end 31, the curtain 5 is disposed with a through hole 51, a steel cable 52 is disposed through the through hole 51, and the through hole 51 is connected to the end plate 34 through the steel cable 52.

Specifically, a frame body 34b is disposed on the end plate 34, a bearing (not shown) is disposed on the frame body 34b, the pulley 34a passes through the bearing and is erected on the frame body 34b, the wire rope 52 passes around the pulley 34a and is disposed on the curtain 5, and the pulley 34a rotates to drive the wire rope 52 to slide up and down.

Referring to fig. 6 to 9, a curtain according to an embodiment of the present invention includes a curtain 5, the curtain 5 is provided with a plurality of windproof holes 55 and a plurality of shielding members 54 corresponding to the windproof holes, each shielding member 54 includes a connecting portion 541 and a covering portion 542 fixedly connected to the connecting portion 541, the connecting portion 541 is fixedly connected to the curtain 5, the covering portion 542 is used for covering the windproof holes 55, and when the curtain is subjected to wind pressure, the covering portion 542 can swing back and forth relative to a plane of the curtain 5 to expose the windproof holes 55.

In this embodiment, the curtain can be applied to an urban canopy, for example, the curtain can be suspended and fixed on a truss of the urban canopy. Because city sky curtain sets up in the open air mostly, like seaside, lake limit, river limit etc, consequently, this curtain will probably receive the wind pressure effect that comes from different directions, when this curtain received the wind pressure effect, should cover the relative plane back and forth swing of this curtain 5 of portion 542 to expose this hole 55 of preventing wind, thereby make wind can be through this hole 55 of preventing wind, reduce the wind pressure that this curtain bore, and then the stretching resistance of reinforcing curtain, avoid incident's emergence.

In this embodiment, the curtain 5 may be composed of a first pvc layer 50a, a fiber layer 50b and a second pvc layer 50c, which are sequentially stacked, and a plurality of fibers in the fiber layer 50b are orthogonally arranged to form a warp and weft structure, so as to effectively enhance the tension of the curtain 5 and ensure that the curtain has a good anti-tearing effect. As shown in fig. 8, in order to avoid the situation that the warp and weft structures in the fiber layer 50b are damaged when the wind-proof holes 55 are formed in the curtain 5, and the tension of the curtain 5 is reduced, when the wind-proof holes 55 are formed, the wind-proof holes 55 may be sequentially and equidistantly arranged according to the weft lines L1 in the warp and weft structures in the length extending direction of the curtain 5, and the wind-proof holes 55 may be sequentially and equidistantly arranged according to the warp lines L2 in the width extending direction of the curtain 5, and the centers of the wind-proof holes 55 are located at the intersections 50d of the weft lines L1 and the warp lines L2, so as to effectively avoid the damage to the warp and weft structures in the fiber layer 50b, thereby ensuring the tensile strength of the curtain, and further enhancing the wind pressure resistance of the curtain.

In this embodiment, the curtain 5 includes a top end 58 and a bottom end 59, which are oppositely disposed, that is, when the curtain 5 is hung on a frame (or a truss), the top end of the curtain 5 is the end fixedly connected to the frame, and the bottom end of the curtain 5 is the end hanging from the ground. The connecting portion 541 can be integrally formed with the curtain 5, for example, when the connecting portion 541 is integrally formed with the curtain 5, the connecting track 541a between the connecting portion 541 and the curtain 5 can be a straight line, an arc line, a wavy line or a sawtooth line (as shown in fig. 9). It is understood that the connection portion 541 can be detachably connected to the curtain 5 in other embodiments. For example, the connection portion 541 may be adhered to the curtain 5 by means of an adhesive, or the connection portion 541 may be sewn to the curtain 5 by means of a sewing thread.

Further, when this connecting portion 541 connects on this curtain 5, this connecting portion 541 and the position department that this curtain 5 is connected have at least a peak to this top 58 distance to be less than this cover portion 542 to this top 58 distance, thereby when the curtain expandes (the curtain hangs on the support body promptly), this cover portion 542 can cover this hole 55 of preventing wind under the action of gravity, that is to say, when the curtain that is applied to outdoor city canopy does not receive the wind pressure effect or receives less wind pressure effect, this cover portion 542 can cover this hole 55 of preventing wind, thereby make the curtain can be the biggest assurance its self roughness, and then can present the image display effect of preferred on the curtain when carrying out the performance. In addition, when the curtain receives a large wind pressure, the covering portion 542 swings back and forth in the wind-proof hole 55 relative to the connecting portion 541, so that the wind can pass through the wind-proof hole 55, the wind pressure borne by the curtain is reduced, the tensile resistance of the curtain is enhanced, and the occurrence of safety accidents is reduced.

Referring to fig. 6 and 12, in the present embodiment, in order to facilitate the formation of the wind-proof hole 55 and the covering of the wind-proof hole 55 by the covering portion 542, the curtain 5 may be cut along a predetermined track to form the covering portion 542, and the wind-proof hole 55 is formed in an area between the predetermined track and the connecting portion 541. It should be noted that the pattern of the preset track must be adapted to the shape of the covering portion 542, that is, when designing the covering portion 542, a preset track matching the shape of the covering portion 542 can be designed on the curtain 5 in advance, and then the covering portion 542 is cut and formed on the curtain 5 according to the preset track. Since the covering portion 542 is formed by cutting on the curtain and the covering portion 542 is used for covering the windproof hole 55, the area between the predetermined track and the connecting portion 541 is the area of the windproof hole 55, that is, the area between the predetermined track and the connecting portion 541 forms the windproof hole 55. It can be appreciated that the cover portion 542 is shaped and sized in conformity with the shape and size of the windproof opening 55.

Further, in order to ensure that the imaging effect and the wind pressure resistance effect of the curtain 5 can be effectively ensured after the wind-proof hole 55 is formed in the curtain 5, the wind-proof hole 55 may be in an inverted trapezoid shape, a U shape, an approximate bowl-shaped structure or an approximate feather ball-shaped structure (not shown), and since the shape and the size of the covering portion and the wind-proof hole are the same, the covering portion is also in an inverted trapezoid shape, a U shape, an approximate bowl-shaped structure or an approximate feather ball-shaped structure.

Preferably, in order to ensure the flatness of the curtain when not subjected to wind pressure or when the wind pressure is small, so as to have a good image forming effect, the wind-proof holes may preferably be inverted isosceles trapezoid-shaped holes, that is, the cross-sectional shape of the wind-proof holes along a plane parallel to the curtain is inverted isosceles trapezoid. Since the shape of the wind shielding hole 55 is identical to that of the covering portion 542, the cross-sectional shape of the covering portion 542 parallel to the curtain is also an inverted isosceles trapezoid.

Wherein, should prevent wind hole 55 and adopt the mode of setting in the shape of the isosceles trapezoid of falling, can guarantee on curtain 5 behind the trompil, the curtain of hole edge department can not produce great deformation to be favorable to guaranteeing the roughness of curtain, and then be favorable to the formation of image effect of curtain.

It is understood that in other embodiments, the windproof apertures 55 may be round, triangular or square apertures.

Furthermore, the inverted isosceles trapezoid is formed by enclosing an upper base a, a first side b, a lower base c and a second side d in sequence. Since the covering portion 542 is cut on the curtain 5 according to a predetermined track, and the wind-proof hole 55 is formed in the area between the predetermined track and the connecting portion 541 after cutting, that is, the predetermined track is the track formed by the second side d, the upper bottom a and the first side b, the connecting track 541a between the connecting portion 541 and the curtain 5 is the lower bottom c of the inverted isosceles trapezoid. In addition, in order to enhance the tearing resistance at the joint of the lower base c and the first side b and the joint of the lower base c and the second side d, a first tearing-prevention structure is arranged between the first side b and the lower base c, and a second tearing-prevention structure is arranged between the second side d and the lower base c.

Furthermore, the first anti-tear structure and the second anti-tear structure can be both convex arc structures. As shown in fig. 10, the one end of this first anti-tear structure is connected with this first side b, the other end of this first anti-tear structure is connected with this c of going to the bottom, thereby form first arc transition structure 56 between this first side b and this c of going to the bottom, the one end of this second anti-tear structure is connected with this second side d, the other end of this second anti-tear structure is connected with this c of going to the bottom, thereby form second arc transition structure 57 between this second side d and this c of going to the bottom, and then when the curtain received great wind pressure and acts on, can strengthen the anti ability of tearing of the connecting portion 541 tip that is connected with curtain 5 in this shielding piece 54, thereby effectively reduce the probability that the damage condition appears tearing when receiving strong wind pressure in the curtain.

Preferably, the first anti-tear structure and the second anti-tear structure may also be circular through holes, as shown in fig. 11, the first side b is connected to the first anti-tear structure, and the lower bottom c is connected to the first anti-tear structure, so that a first concave arc-shaped gap 56a can be formed between the first side b and the lower bottom c; this second side d and this second prevent tearing the structural connection, this go to the bottom c and this second prevent tearing the structural connection, thereby can form second concave arc shape breach 57b between this second side d and this go to the bottom c, and then when the curtain receives great wind pressure to act on, connecting portion 541 connected with curtain 5 will receive equal wind pressure effect, and this circular through-hole dispersible acts on the wind pressure of this connecting portion 541 tip, thereby reduced the tearing of wind to this connecting portion 541 tip, the anti ability of tearing of this connecting portion 541 tip has been strengthened.

Further, the sum of the areas of all the windproof holes 55 on the curtain 5 is 60-80% of the plane area of the curtain 5. That is, when the wind-proof holes 55 are inverse trapezoidal holes provided on the curtain 5, the sum of the areas of all the inverse trapezoidal holes is 60% to 80% of the planar area of the curtain 5. Adopt this kind of design, not only can effectively ensure the air volume of crossing in the wind-proof hole on the curtain 5, ensure its anti-wind pressure effect, can also effectively guarantee the tension of curtain 5 self simultaneously, when performing the formation of image, also can effectively guarantee its formation of image effect.

Preferably, the sum of the areas of all the windproof holes 55 on the curtain 5 is 68% of the planar area of the curtain 5. It is understood that in other embodiments, the sum of the areas of all of the louvers 55 in the curtain 5 can also be 60%, 65%, 70%, 72%, 75%, 78%, or 80%, etc. of the planar area of the curtain 5.

In this embodiment, as shown in fig. 12, when the curtain is subjected to wind pressure, the covering portion 542 connected to the curtain 5 swings back and forth along with the wind direction due to the wind pressure equal to that of the curtain, and at this time, the wind-proof hole 55 covered by the covering portion 542 is exposed 6 due to the swing of the covering portion 542, so that the wind can pass through the wind-proof hole 55, the wind pressure borne by the curtain is reduced, and the wind pressure resistance of the curtain is enhanced.

Referring to fig. 6, in the present embodiment, the curtain 5 is provided with a plurality of connecting rods 53 disposed at intervals along the length extending direction of the curtain 5, each connecting rod 53 extends along the width direction of the curtain 5, a plurality of wind-proof holes 55 are disposed between two adjacent connecting rods 53, and two adjacent wind-proof holes 55 are disposed at equal intervals along the length extending direction and the width extending direction of the curtain 5. That is, the connecting rods 53 divide the curtain 5 into a plurality of regions having equal areas, the wind-proof holes 55 are formed in each region, and the number of wind-proof holes in each region, the distance between two adjacent wind-proof holes, and the distance between two adjacent wind-proof holes in the same straight line from each region to the region adjacent thereto are all equal.

Further, this curtain still includes a plurality of sewing structures (not shown) that equidistantly arrange the setting along the length extending direction of this curtain 5, each this sewing structure all extends the setting along the width direction of this curtain 5, each this sewing structure all is connected with this curtain 5 and forms hollow column hole (not shown), this connecting rod 53 wears to locate in this column hole to can solve connecting rod 53 and directly be connected with the curtain surface and make connecting rod 53 easily follow the problem that the curtain drops, adopt foretell mode can also be convenient for the equipment and the dismantlement of connecting rod and curtain simultaneously.

Further, the sewing structure may be formed by sewing the curtain 5 with a cloth of the same material as the curtain 5 at equal intervals, that is, a plurality of cloth pieces are sewn at equal intervals in the length extending direction of the curtain 5, and each cloth piece extends and is sewn along the width direction of the curtain 5, so that a hollow cylindrical hole is formed between the curtain 5 and the cloth pieces.

In the embodiment, through set up windproof hole 55 and correspond windproof hole on curtain 5 and set up a plurality of shielding pieces 54, utilize the connecting portion 541 of shielding piece 54 to connect curtain 5, shielding piece 54's the portion 542 that hides windproof hole 55, thereby when the curtain receives the wind pressure effect, the portion 542 that hides can swing back and forth relative connecting portion 541, thereby make wind pass through windproof hole 55, and then reduce the wind pressure that the curtain bore, avoid strong wind pressure to cause the damage to the curtain. In addition, when the curtain does not receive the wind pressure or receives the wind pressure less, this wind hole 55 is shielded completely to this portion 542 that covers to can effectively ensure the formation of image effect of curtain.

The wind pressure resisting device applied to the urban canopy disclosed by the embodiment of the invention is described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the wind pressure resisting device applied to the urban canopy and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a be applied to wind-pressure resistant device of city canopy which characterized in that includes:

2. The wind pressure resistant device applied to the urban canopy according to claim 1, wherein the connecting assembly further comprises a hollow connecting sleeve, the elastic member is fixedly arranged in the connecting sleeve, the pressing member is slidably connected to the connecting sleeve, and when the second end is located in the accommodating cavity, the pressing member can slide to be partially located outside the connecting sleeve and abut against the second end; when the second end presses the pressing piece under the action of the first end, the pressing piece can slide into the connecting sleeve and press the elastic piece, and at the moment, the second end can slide out of the accommodating cavity.

3. The wind-resistant device applied to the urban canopy according to claim 2, wherein one end of the connecting sleeve is fixedly connected to the inner wall surface of the accommodating cavity, the other end of the connecting sleeve is obliquely contracted towards the center of the accommodating cavity to form a contraction opening, and when the second end is located in the accommodating cavity, the pressing member can slide to be partially located outside the contraction opening and abut against the second end; when the second end presses the pressing piece under the action of the first end, the pressing piece slides into the contraction opening and presses the elastic piece, and at the moment, the second end can slide and be separated from the accommodating cavity.

4. The wind-resistant device applied to the urban canopy according to any one of claims 1 to 3, wherein the pressing member is a sphere or a wedge, the elastic member is a spring, and the pressing member and the elastic member are connected through a connecting plate.

5. The wind-resistant device applied to the urban canopy according to any one of claims 1 to 3, wherein a groove corresponding to the pressing member is formed on the vertical shaft, and when the second end is slidably located in the accommodating cavity, the pressing member is clamped in the groove.

6. The wind pressure resistant device applied to the urban awning of claim 1, wherein the curtain is provided with a plurality of wind-proof holes and a plurality of shielding members corresponding to the plurality of wind-proof holes, each shielding member comprises a connecting portion and a covering portion fixedly connected with the connecting portion, the connecting portion is fixedly connected to the curtain, the covering portion is used for covering the wind-proof holes, and when the curtain is under the action of wind pressure, the covering portion can swing back and forth relative to the plane of the curtain to expose the wind-proof holes.

7. The wind resistance device applied to the urban canopy according to claim 6, wherein the curtain is cut along a preset track to form the covering portion, and an area between the preset track and the connecting portion forms the wind-proof hole.

8. The wind pressure resistant device of claim 6 or 7, wherein the curtain comprises a top end and a bottom end which are arranged oppositely, the distance from at least one highest point to the top end at the position where the connecting part is connected with the curtain is less than the distance from the covering part to the top end, and when the curtain is subjected to wind pressure, the covering part can swing back and forth relative to the connecting part.

9. The wind pressure resistant device applied to urban awning as claimed in claim 8, wherein the curtain comprises a first polyvinyl chloride layer, a fiber layer and a second polyvinyl chloride layer which are sequentially stacked, a plurality of fibers in the fiber layer are orthogonally arranged to form a longitude and latitude structure, and are arranged along the length extending direction of the curtain, the wind-proof holes are arranged according to the weft in the longitude and latitude structure in an equidistant mode in sequence, and are arranged along the width extending direction of the curtain, the wind-proof holes are arranged according to the warp in the longitude and latitude structure in an equidistant mode in sequence, and each wind-proof hole center is located at the intersection of the weft and the warp.

10. The wind pressure resistant device applied to the urban canopy according to claim 9, wherein the sum of the areas of each wind-proof hole on the curtain is 60-80% of the plane area of the curtain.