CN113160722B

CN113160722B - Large-scale bill-board in high altitude

Info

Publication number: CN113160722B
Application number: CN202110317878.8A
Authority: CN
Inventors: 郭丽; 王冠; 刘竹; 许嘉琛; 李言兮
Original assignee: Henan Polytechnic Institute
Current assignee: Henan Polytechnic Institute
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2022-08-26
Anticipated expiration: 2041-03-25
Also published as: CN113160722A

Abstract

The invention relates to a high-altitude large billboard, which effectively solves the problem that the large high-altitude billboard has poor wind resistance; the technical scheme includes that the wind power generator comprises a plurality of fixed plates and a plurality of rotating plates, wherein a rotating plate is arranged between every two fixed plates, a vertical arc-shaped plate is arranged on the rear surface of each rotating plate, wind perpendicular to the rotating plates blows on the arc-shaped plates and can be changed into wind which faces left or right and is parallel to the rotating plates along the arc-shaped plates, a wind power driven rotating unit is mounted at the upper end of a rotating shaft of each rotating plate, wind shields are arranged on the left side, the right side and the rear side of each rotating unit, and three wind shields surround three sides of a fan blade and a rotating drum except the front side, so that only the incoming wind on the front side can blow through the rotating units; the invention has strong wind resistance, complete layout, simple installation, low construction cost and strong practicability.

Description

High-altitude large-scale billboard

Technical Field

The invention relates to the field of advertising equipment, in particular to a high-altitude large-scale advertising board.

Background

The billboard is the most common and effective propaganda form, a large-sized high-altitude billboard is often built in open fields such as squares and highways, the wind resistance of the billboard is extremely important due to large wind at high altitude and huge area of the billboard, and the current wind-resistant billboard is generally divided into several forms of auxiliary support, wind release hole forming, rotation with wind or deformation; the high-altitude advertising board is positioned at high altitude and has no supporting point, so that the auxiliary support cannot be erected; although a certain impact force can be reduced by arranging the air leakage holes, the air leakage effect is related to the number of the air leakage holes, the number of the air leakage holes is small, the area is small, and the number and the area are large, so that the integrity of the advertising surface is seriously damaged, the display effect is greatly reduced, and the air leakage holes are arranged to bring great difficulty to the design, manufacture and installation of the advertising cloth; and deformation and rotation along with the wind obviously too idealize to large-scale steel structure bill-board, unrealistic, can reduce the security and the stability of bill-board, make design build the degree of difficulty and cost simultaneously and all promote at double, hardly have using value.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the high-altitude large-scale billboard, which effectively solves the problem of poor wind resistance of the large-scale high-altitude billboard.

The technical scheme includes that the high-altitude large-scale advertising board comprises a plurality of vertical rectangular fixed plates and a plurality of vertical rectangular rotating plates, the plurality of fixed plates are arranged at intervals from left to right, one rotating plate is arranged between every two fixed plates, the plurality of fixed plates and the plurality of rotating plates form a complete advertising surface, each rotating plate is rotatably arranged between the two fixed plates through a vertical rotating shaft, a first torsion spring is arranged on the rotating shaft, a vertical arc-shaped plate is arranged on the rear surface of each rotating plate, and wind perpendicular to the rotating plates blows the arc-shaped plates and becomes wind which faces to the left or the right and is parallel to the rotating plates along the arc-shaped plates; the upper end of a rotating shaft of each rotating plate is provided with a rotating unit, the rotating unit comprises a rotating drum coaxially fixed at the upper end of the rotating shaft, a plurality of arc-shaped fan blades are uniformly distributed on the circumference of the outer wall of the rotating drum, the concave surfaces of all the fan blades face the direction of a pointer or face the anticlockwise direction, when wind blows over the fan blades, the stress of the fan blades facing the wind is larger, the torque difference on two sides of an axis drives the rotating drum and the rotating shaft to rotate, if the concave surfaces of the fan blades face the clockwise direction, the rotating drum rotates anticlockwise, and if the concave surfaces of the fan blades face the anticlockwise direction, the rotating drum rotates along the pointer; the left side, the right side and the rear side of the rotary drum are respectively provided with a wind shield, and the three wind shields surround the fan blade and the rotary drum except the front side, so that only the incoming wind on the front side can blow the fan blade.

And a space is arranged between the wind shield at the rear side and the other two wind shields.

The inner side of each fan blade is hinged to the rotary drum through a vertical hinged shaft, a second torsion spring is mounted on the hinged shaft, the outer end of each fan blade is close to the rotary drum under the action of the second torsion springs, and the fan blades are in a furled state.

The fixed plates are all steel structure frames, the upper and lower ends of two adjacent fixed plates are fixedly connected through a connecting plate respectively, the upper and lower ends of the rotating shaft are rotatably arranged on the connecting plate,

the three wind shields are fixed on the connecting plate.

The rotating shaft is provided with a limiting unit, the limiting unit comprises a radial rod fixed on the rotating shaft and a vertical limiting rod fixed on the connecting plate, and when the first torsion spring is in a natural state, the rotating plate rotates 180 degrees to enable the radial rod to be in contact with the limiting rod.

The arc-shaped plate and the surface of the rotating plate are provided with intervals.

The invention has strong wind resistance, complete layout, simple installation, low construction cost and strong practicability.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a front view of the present invention after installing the advertisement cloth, in which a is the advertisement cloth block on the fixed plate and b is the advertisement cloth block on the rotating plate.

Fig. 3 is a top view of the invention from the rear, not shown rotated to the unit.

Fig. 4 is a top view of the invention from the front, not shown rotated to the unit.

Fig. 5 is a top view of the rotating unit when the fan blades are folded.

Fig. 6 is a top view of the rotating unit when the fan blades are opened in strong wind.

Fig. 7 is an enlarged view of the position a in fig. 3.

Fig. 8 is an enlarged view of the position B in fig. 4.

Fig. 9 is an enlarged view of the position C in fig. 1.

Detailed Description

The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings.

As shown in fig. 1 to 9, the advertisement board comprises a plurality of vertical rectangular fixed plates 1 and a plurality of vertical rectangular rotating plates 2, wherein the plurality of fixed plates 1 are arranged at intervals from left to right, one rotating plate 2 is arranged between every two fixed plates 1, the plurality of fixed plates 1 and the plurality of rotating plates 2 form a complete advertisement surface, each rotating plate 2 is rotatably installed between the two fixed plates 1 through a vertical rotating shaft 3, a first torsion spring 4 is installed on the rotating shaft 3, a vertical arc-shaped plate 5 is arranged on the rear surface of each rotating plate 2, and wind perpendicular to the rotating plates 2 blows on the arc-shaped plate 5 and becomes wind towards the left or the right and parallel to the rotating plates 2 along the arc-shaped plate 5; a rotating unit is mounted at the upper end of a rotating shaft 3 of each rotating plate 2 and comprises a rotating drum 6 coaxially fixed at the upper end of the rotating shaft 3, a plurality of arc-shaped fan blades 7 are uniformly distributed on the outer wall of the rotating drum 6 in the circumferential direction, concave surfaces of all the fan blades 7 face the clockwise direction or the anticlockwise direction, when wind blows over the fan blades 7, the fan blades 7 with the windward concave surfaces are stressed more, torque difference on two sides of an axis drives the rotating drum 6 and the rotating shaft 3 to rotate, if the concave surfaces of the fan blades 7 face the clockwise direction, the rotating drum 6 rotates anticlockwise, and if the concave surfaces of the fan blades 7 face the anticlockwise direction, the rotating drum 6 rotates along the pointer; the left side, the right side and the rear side of the rotary drum 6 are respectively provided with a wind shield 8, and the three wind shields 8 surround the fan blades 7 and the rotary drum 6 except the front side, so that only the incoming wind on the front side can blow over the fan blades 7.

And a space is arranged between the wind shield 8 at the rear side and the other two wind shields 8, and the wind blown in from the front side can be blown out from the space, so that airflow is formed at the fan blades 7 to push the rotary drum 6 to rotate.

The inner side of each fan blade 7 is hinged on the rotary drum 6 through a vertical hinged shaft, a second torsion spring 9 is arranged on the hinged shaft, the outer end of each fan blade 7 is close to the rotary drum 6 under the action of the second torsion spring 9, and the fan blades 7 are in a furled state; when the wind power is small, the fan blades 7 can not be opened, the torque received by the rotating unit is small, the rotating plate 2 is kept stable under the action of the first torsion spring 4, so that the completeness of the advertising surface is ensured, when the wind power is large, strong wind blows into a gap between the fan blades 7 with the concave surface facing the wind and the rotating drum 6, the fan blades 7 on the side are opened under the action of the second torsion spring 9, the windward area is increased, the torque received by the rotating unit is greatly increased, the rotating unit drives the rotating plate 2 to rotate 180 degrees, and the arc-shaped plate 5 on the back of the rotating plate 2 faces the wind.

The fixed plates 1 are all steel structure frames, the upper and lower ends of two adjacent fixed plates 1 are fixedly connected through a connecting plate 10 respectively, the upper and lower ends of the rotating shaft 3 are rotatably arranged on the connecting plate 10,

the three wind deflectors 8 are fixed to the connecting plate 10.

The limiting unit is mounted on the rotating shaft 3 and comprises a radial rod 11 fixed on the rotating shaft 3 and a vertical limiting rod 12 fixed on the connecting plate 10, and when the first torsion spring 4 is in a natural state, the rotating plate 2 rotates 180 degrees to enable the radial rod 11 to be in contact with the limiting rod 12, so that the rotating plate 2 can only rotate 180 degrees.

The arc-shaped plate 5 and the surface of the rotating plate 2 are provided with a space, and the wind can pass through the space when flowing along the surfaces of the fixed plate 1 and the rotating plate 2 after turning.

When the invention is used, the billboard composed of a plurality of fixed plates 1 and a plurality of rotating plates 2 is erected at high altitude through the vertical rod, when the billboard is provided with advertisements, the advertisement surface is divided into a plurality of blocks with the same size as the fixed plates 1 and the rotating plates 2, and then the blocks are respectively and correspondingly arranged in front of the fixed plates 1 and on the surface of the rotating plates 2 without the arc-shaped plates 5; when no wind exists, under the action of the first torsion spring 4, the side, attached with the advertisement, of the rotating plate 2 is located in front, so that the rotating plate and the advertisement on the fixed plate 1 form a complete advertisement propaganda surface, and the arc-shaped plate 5 is located behind the advertisement plate.

When wind blows from the back of the billboard, the wind shield 8 at the back side prevents the wind from blowing through the rotating unit, so the rotating unit and the rotating plate 2 do not rotate, at the moment, the wind blows on the arc plate 5 and is guided by the arc surface to be converted into the airflow which is parallel to the surface of the billboard and flows along the back surface of the billboard, the guiding function of the arc plate 5 can reduce certain impact force on one hand, more importantly, the airflow which flows along the back surface of the billboard after being turned by the arc plate 5 makes the airflow flow speed of the back surface of the billboard far larger than that of the front surface of the billboard, according to Bernoulli principle, the faster the flow speed is lower the pressure, therefore, the air pressure at the back surface of the billboard is lower than that at the front surface of the billboard, the air pressure difference between the front and the back can form a backward pressure on the billboard, which is equivalent to apply a supporting force on the front surface of the billboard for balancing the impact force of the wind from the back surface, and the supporting force is increased along with the increase of wind power, so that the wind resistance of the billboard is effectively improved.

The wind blowing from the left and right sides is parallel to the signboard, so that it does not cause a large impact force to the signboard, and the wind shields 8 on the left and right sides prevent the left and right wind from blowing through the rotation unit, so that the rotation plate 2 does not operate.

When wind blows from the front side of the billboard, the wind can blow through the rotating unit, if the wind power is small, the fan blades 7 are not opened, the torque of the wind on the rotating unit is small, and the rotating plate 2 is kept stable under the action of the first torsion spring 4, so that the billboard can keep a finished advertising surface when the wind power is small; if the wind power is large, strong wind blows into a gap between the fan blade 7 facing the wind with the concave surface and the rotary drum 6, so that the fan blade 7 on the side is opened under the action of the second torsion spring 9, the windward area is increased, the torque borne by the rotary unit is greatly increased, the rotary unit drives the rotary plate 2 to rotate 180 degrees under the action of the first torsion spring 4, the arc-shaped plate 5 on the back of the rotary plate 2 rotates to the front side to face the wind, and therefore facing airflow is formed on the front surface of the billboard, forward pressure difference is formed on the front side and the rear side of the billboard, and the front side incoming wind is balanced; after the wind power is reduced, the fan blades 7 and the rotating plate 2 return under the action of the first torsion springs 4 and the second torsion springs 9, and the advertising surface is completely restored.

The invention has the remarkable advantages that:

1. according to the invention, the Bernoulli principle is utilized, the front-side pressure difference and the rear-side pressure difference are generated by the wall-attached airflow generated by the arc-shaped plate 5 to counteract the impact force of wind, and the larger the wind force is, the larger the supporting force provided by the pressure difference is, so that the wind resistance of the billboard can be effectively improved.

2. The invention does not need to be provided with a large number of force release holes, can ensure the completeness of the advertising surface in non-strong wind weather, ensures good advertising effect, and is simpler in design, manufacture and installation of the advertising cloth because the advertising board surface is more complete.

3. The invention does not need the whole billboard to deform or rotate, has strong safety and stability and low construction cost, and is more suitable for the practice of large billboards compared with unrealistic deformable or rotatable billboards.

Claims

1. The high-altitude large-scale billboard is characterized by comprising a plurality of vertical rectangular fixed plates (1) and a plurality of vertical rectangular rotating plates (2), the plurality of fixed plates (1) are arranged at left and right intervals, one rotating plate (2) is arranged between every two fixed plates (1), the plurality of fixed plates (1) and the plurality of rotating plates (2) form a complete advertising surface, each rotating plate (2) is rotatably installed between the two fixed plates (1) through one vertical rotating shaft (3), a first torsion spring (4) is installed on the rotating shaft (3), the rear surface of each rotating plate (2) is provided with one vertical arc-shaped plate (5), and wind perpendicular to the rotating plates (2) blown onto the arc-shaped plates (5) can turn to the left or right along the arc-shaped plates (5) and is parallel to the rotating plates (2); the upper end of a rotating shaft (3) of each rotating plate (2) is provided with a rotating unit, each rotating unit comprises a rotating drum (6) coaxially fixed at the upper end of the corresponding rotating shaft (3), a plurality of arc-shaped fan blades (7) are uniformly distributed on the outer wall of each rotating drum (6) in the circumferential direction, the concave surfaces of all the fan blades (7) face the direction of a pointer or face the anticlockwise direction, when wind blows over the fan blades (7), the fan blades (7) with the concave surfaces facing the wind are stressed more, and the rotating drums (6) and the rotating shafts (3) are driven to rotate by the torque difference of the two sides of the axis; the left side, the right side and the rear side of the rotary drum (6) are respectively provided with a wind shield (8), and the three wind shields (8) surround the fan blade (7) and the rotary drum (6) except the front side, so that only the incoming wind on the front side can blow through the fan blade (7);

the rotating shaft (3) is provided with a limiting unit, the limiting unit comprises a radial rod (11) fixed on the rotating shaft (3) and a vertical limiting rod (12) fixed on the connecting plate (10), and when the first torsion spring (4) is in a natural state, the rotating plate (2) rotates 180 degrees to enable the radial rod (11) to be in contact with the limiting rod (12).

2. Large high-altitude advertising board according to claim 1, wherein a space is arranged between the wind deflector (8) at the rear side and the other two wind deflectors (8).

3. The high-altitude large-scale advertising board as claimed in claim 1, wherein the inner side of each fan blade (7) is hinged to the rotary drum (6) through a vertical hinged shaft, a second torsion spring (9) is mounted on the hinged shaft, the outer ends of the fan blades (7) are close to the rotary drum (6) under the action of the second torsion spring (9), and the fan blades (7) are in a furled state.

4. The high-altitude large-scale advertising board as claimed in claim 1, wherein the fixed plates (1) are all steel structure frames, the upper and lower ends of two adjacent fixed plates (1) are fixedly connected through a connecting plate (10), and the upper and lower ends of the rotating shaft (3) are rotatably mounted on the connecting plate (10).

5. A high-altitude large billboard according to claim 4, characterized in that the three wind deflectors (8) are fixed on the connecting plate (10).

6. The high-altitude large-scale advertising board as claimed in claim 1, wherein the arc-shaped plate (5) is spaced from the surface of the rotating plate (2).