CN108648659B - A prevent down tripod for bill-board - Google Patents
A prevent down tripod for bill-board Download PDFInfo
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- CN108648659B CN108648659B CN201810446607.0A CN201810446607A CN108648659B CN 108648659 B CN108648659 B CN 108648659B CN 201810446607 A CN201810446607 A CN 201810446607A CN 108648659 B CN108648659 B CN 108648659B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/0068—Modular articulated structures, e.g. stands, and articulation means therefor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/0087—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like including movable parts, e.g. movable by the wind
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/02—Bills, posters, or the like therefor
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Pivots And Pivotal Connections (AREA)
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Abstract
The invention belongs to the technical field of tripods, and particularly relates to an anti-falling tripod for a billboard, which comprises the billboard, a support plate, a rotating shaft, an actuating mechanism, a first ring and a slot, wherein the billboard generates certain swing by the power of wind blowing, and the swinging billboard drives a series of gears to rotate by the rotating shaft to amplify the transmission ratio until a fourth gear can enable two first telescopic plates to generate telescopic motion; the telescopic motion of the two first telescopic plates enables the gravity center of the tripod to move in the direction away from the wind; before the gravity center of the tripod is not shifted, the tripod with the shifted gravity center can be blown down by larger wind power. The invention has simple structure and better use effect.
Description
Technical Field
The invention belongs to the technical field of tripods, and particularly relates to a tilting prevention tripod for a billboard.
Background
At present, for many merchants, advertisements of products or activity information of the merchants often need to be publicized and promoted externally, and in the publicizing and promoting, the advertisements or the activity information are pasted on a wall or made into a billboard to be hung on the wall for publicizing and promoting; but in order to bring and move the advertising boards, the advertising boards are often mounted on a tripod, so that the advertising boards are moved at any time on one hand, and are erected on the ground by using the stability of the tripod on the other hand; however, when the billboard is blown by a large wind, the billboard and the tripod are easily blown down by the large wind because the billboard has a large wind-blown area. In order to prevent the billboard and the tripod from being blown down by large wind, a tripod type advertisement support capable of preventing the billboard from being blown down by wind needs to be designed.
The invention designs an anti-falling tripod for a billboard to solve the problems.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses an anti-falling tripod for a billboard, which is realized by adopting the following technical scheme.
The utility model provides a prevent down tripod for bill-board which characterized in that: the advertising board comprises an advertising board, a support plate, a rotating shaft, actuating mechanisms, a first ring and slots, wherein two actuating mechanisms are symmetrically arranged at two ends of the rotating shaft; the two support plates are symmetrically arranged on the rotating shaft through the first ring, and are positioned on the two executing mechanism supports; each support plate is matched with a corresponding actuating mechanism; the opposite side surfaces of the two support plates are provided with slots; the billboard is inserted into the slots of the two bracket plates.
The executing mechanism comprises a volute spiral spring, a first connecting block, a second connecting block, a shaft sleeve, a T-shaped guide block, a base, an arc-shaped plate, a first fixing plate, a first gear, a fourth gear, a first rack, a U-shaped plate, an L-shaped plate, an arc-shaped through groove, a T-shaped guide groove, a second gear, a first shaft, a third gear, a notch and a first telescopic plate, wherein the arc-shaped plate is arranged on the base; the two U-shaped plates are symmetrically arranged on the base; an arc through groove is formed in the side face of the arc plate; t-shaped guide grooves are formed in the outer circular surface and the inner circular surface of the arc-shaped through groove; the shaft sleeve is nested on the rotating shaft; two T-shaped guide blocks are symmetrically arranged on the outer circular surface of the shaft sleeve; the shaft sleeve is positioned in the arc-shaped through groove, and the two T-shaped guide blocks are respectively positioned in the corresponding T-shaped guide grooves; the shaft sleeve slides in the arc-shaped through groove through the two T-shaped guide blocks; the volute spiral spring is nested on the rotating shaft, one end of the volute spiral spring is arranged on the side face of the shaft sleeve through the first connecting block, and the other end of the volute spiral spring is arranged on the corresponding support plate through the second connecting block; the first expansion plate consists of an expansion outer sleeve and an expansion inner plate; one end of the telescopic inner plate, which is far away from the telescopic outer sleeve, is provided with a notch; the telescopic outer sleeves in the two first telescopic plates are arranged in the corresponding U-shaped plates in a hinged mode, and one ends, provided with notches, of the telescopic inner plates in the two first telescopic plates are arranged on the outer circular surface of the rotating shaft; the two first racks are respectively arranged on the telescopic outer sleeves of the two first telescopic plates through the L-shaped plates; the central line of the first rack is parallel to the central line of the corresponding telescopic outer sleeve; the two first racks are both positioned on the outer side of a triangle formed by the two first expansion plates and the base; the first gear is arranged on the outer circular surface of the rotating shaft and is positioned between the shaft sleeve and the first expansion plate; a first fixing plate is arranged on the outer circular surface of one end of the shaft sleeve, which is far away from the support plate; the two second gears are symmetrically arranged on the plate surface of the first fixing plate far away from the T-shaped guide groove through an axis; the two first shafts are symmetrically arranged on the plate surface of the first fixing plate far away from the T-shaped guide groove; one end of each first shaft, which is far away from the first fixing plate, is provided with a fourth gear; the two third gears are respectively arranged on the corresponding first shafts, and the third gears are positioned between the fourth gears and the first fixing plate; the second gear is respectively meshed with the first gear and the third gear; the fourth gear is meshed with the first rack.
As a further improvement of the technology, the length of the billboard is larger than that of the slot.
As a further improvement of the present technology, the diameter of the second gear is the same as that of the third gear, and the diameter of the first gear is larger than that of the second gear.
As a further improvement of the present technology, the diameter of the fourth gear is larger than the diameter of the third gear.
As a further improvement of the technology, the point where the hinge point of the first expansion plate and the U-shaped plate projects to the plane where the arc-shaped through groove is located is a point A, and the sum of the distances from any point of the arc-shaped center line of the arc-shaped through groove to the two points A is equal to the sum of the lengths of the two first expansion plates in any state.
As a further improvement of the technology, when the billboard is not swung, the scroll spring is not compressed, and the lengths of the two first expansion plates are the same.
The swing of the billboard can be transmitted to the rotating shaft through the first ring, and then the rotating shaft can rotate; the slot is formed in the support plate, the advertising board is inserted into the slot, and when the advertising board is blown by wind, the top of the high board can swing around the axis of the rotating shaft along the wind blowing direction; the length of the billboard is larger than that of the slot, so that the billboard can better receive the energy of wind, and the amplitude of the swing of the billboard is larger.
For the actuator: install two T type guide blocks on the axle sleeve, the axle sleeve is arranged in the arc and leads to the groove, and two T type guide blocks are arranged in corresponding T type guide slot respectively, so under the limiting displacement of T type guide slot, the axle sleeve will be unable rotatory around the axis of self for the axle sleeve can only slide along the arc leads to the groove. The one end of volute spiral spring is installed on the side of axle sleeve through first connecting block, and the other end passes through the second connecting block to be installed on corresponding mounting panel, and because the unable rotation of axle sleeve, so when the mounting panel was along with the bill-board swing, volute spiral spring just can compress the energy storage, and volute spiral spring also enables the mounting panel removal in addition and resets. The third gear and the fourth gear are both mounted on the first shaft, and the third gear can drive the fourth gear to rotate through the first shaft. The diameter of the fourth gear is larger than that of the third gear, the diameters of the two gears are the same as that of the third gear, and the diameter of the first gear is larger than that of the second gear. The fourth gear is meshed with the first rack, so that the fourth gear which rotates greatly can drive the first rack to move greatly. The two fourth gears are meshed with the corresponding first racks, the rotating directions of the two fourth gears are the same, the two first racks are both arranged on the telescopic outer sleeves of the corresponding first telescopic plates through the L-shaped plates, and then the first telescopic plates, the L-shaped plates, the first racks and the fourth gears which are positioned on the same side of the rotating shaft are classified into movement combinations; for one motion combination, when the fourth gear gives a motion trend to the corresponding first rack towards the corresponding telescopic outer sleeve, the telescopic outer sleeve cannot be deformed, and the telescopic inner plate in the first telescopic plate relatively extends out of the telescopic outer sleeve; for another movement combination, when the fourth gear gives a movement tendency to the corresponding first rack toward the corresponding telescopic inner plate, the telescopic inner plate of the first telescopic plate enters into the telescopic outer sleeve relatively because the telescopic outer sleeve cannot be deformed. When the first expansion plate in one motion combination compresses, after the first expansion plate in another motion combination stretches out, the rotating shaft moves along the arc-shaped through groove in the direction away from the wind-blowing direction, the advertising board also moves along the direction away from the wind-blowing direction along the rotating shaft, the design is that after the rotating shaft moves along the arc-shaped through groove in the direction away from the wind-blowing direction along the rotating shaft, the gravity centers of the advertising board and the whole tripod shift in the direction away from the wind-blowing direction, the distance from the gravity center after the shift to the fulcrum of the tripod is increased, and the advertising board is not easy to blow down.
First expansion plate and U template pin joint project the point on the arc leads to groove place plane for A point, and the arc leads to the arbitrary point department of groove arc central line to reach the distance sum between two A points and equals two first expansion plates length sum under arbitrary state, and such design just can be guaranteed, and when the first expansion plate compression in two first expansion plates in the actuating mechanism, when another extension, the pivot can lead to the groove along the arc and slide.
When the advertising board is not blown by wind, the advertising board does not swing, the spiral spring is not compressed, and the lengths of the two first expansion plates are the same; the center of gravity of the tripod is positioned at the center of the tripod.
When the billboard is blown by wind, the tail end of the base of the tripod along the blowing direction is named as an N point; when the signboard is not swung, the distance from the center of gravity to the point N at this time is S1. When the billboard is continuously blown by wind and swings around the axis of the rotating shaft in the wind blowing direction, the volute spiral spring is compressed, and the billboard drives the rotating shaft to rotate through the support plate and the first ring; the rotating shaft drives the first gear to rotate, the first gear rotates through the second gear, the third gear and the fourth gear, and the rotating direction of the fourth gear is the same as that of the first gear; in the process that the two fourth gears rotate, when the fourth gear in the motion combination positioned at the tail end of the blowing direction in the two motion combinations in the blowing direction gives a motion trend to the corresponding first rack towards the direction of the corresponding telescopic outer sleeve, the telescopic outer sleeve cannot deform, so that the telescopic inner plate in the first telescopic plate enters the telescopic outer sleeve relatively; when the fourth gear in the movement combination at the head end in the blowing direction gives a movement trend to the corresponding first rack towards the corresponding telescopic inner plate, the telescopic inner plate in the first telescopic plate relatively extends out of the telescopic outer sleeve because the telescopic outer sleeve cannot deform. When the first expansion plate in the head end motion combination is compressed and the first expansion plate in the tail end motion combination extends out, the rotating shaft moves along the arc-shaped through groove in the direction away from the wind blowing direction, and the advertising board also moves along the direction away from the wind blowing direction along with the rotating shaft; after the rotary shaft moves along the arc-shaped through groove in the direction deviating from the wind blowing direction, the center of gravity of the advertising board and the whole tripod shifts in the direction deviating from the wind blowing direction, so that the distance from the shifted center of gravity to the point N is S2, and S2 is larger than S1; therefore, before the gravity center of the tripod is not shifted, the tripod with the shifted gravity center can be blown down by larger wind power; the phenomenon that the advertising board is easily blown down by large wind is avoided, so that the advertising board can still stand on the ground to continuously propagate under severe conditions.
After wind blowing stops, the advertising board is restored to the original position under the restoring action of the volute spiral spring, the two first expansion plates are also restored to the state when the two first expansion plates are not deformed in the restoring process of the advertising board, and finally the gravity center of the whole tripod is restored to the original position again.
Compared with the traditional tripod technology, the advertising board swings to a certain extent by utilizing the power of wind blowing, and the swinging advertising board drives the rotating shaft to drive the series of gears to rotate so as to amplify the transmission ratio until the fourth gear can enable the two first expansion plates to perform telescopic motion; the telescopic motion of the two first telescopic plates enables the gravity center of the tripod to move in the direction away from the wind; before the gravity center of the tripod is not shifted, the tripod with the shifted gravity center can be blown down by larger wind power. The invention has simple structure and better use effect.
Drawings
Figure 1 is a general schematic view of a tripod.
Fig. 2 is a schematic view of a mounting plate.
FIG. 3 is a schematic view of a scroll spring installation.
Fig. 4 is a schematic diagram of an actuator.
Fig. 5 is a cross-sectional (first) side view of the actuator.
Fig. 6 is a schematic sectional (second) front view of the actuator.
Fig. 7 is a schematic sectional (third) front view of the actuator.
Fig. 8 is a schematic view of an arc plate structure.
Fig. 9 is a schematic cross-sectional view of an arcuate plate.
Fig. 10 is a first gear mounting schematic.
Fig. 11 is a schematic view of the first rack mounting.
Fig. 12 is a schematic diagram of a first telescoping plate structure.
Number designation in the figures: 1. a billboard; 2. a mounting plate; 3. a rotating shaft; 4. an actuator; 5. a first ring; 6. a slot; 7. a volute spiral spring; 8. a first connection block; 9. a second connecting block; 10. a shaft sleeve; 12. a T-shaped guide block; 13. a base; 14. an arc-shaped plate; 15. a first fixing plate; 16. a first gear; 17. a fourth gear; 18. a first rack; 19. a U-shaped plate; 20. an L-shaped plate; 21. an arc-shaped through groove; 22. a T-shaped guide groove; 23. a second gear; 24. a first shaft; 25. a third gear; 26. a telescopic outer sleeve; 27. a telescopic inner plate; 28. cutting; 30. a first expansion plate.
Detailed Description
As shown in fig. 1, it comprises a billboard 1, a support plate 2, a rotating shaft 3, an actuating mechanism 4, a first ring 5 and a slot 6, as shown in fig. 1, wherein two actuating mechanisms 4 are symmetrically installed at two ends of the rotating shaft 3; as shown in fig. 2, two support plates 2 are symmetrically mounted on the rotating shaft 3 through a first ring 5, and the two support plates 2 are located on two supports of the actuator 4; each support plate 2 is matched with a corresponding actuating mechanism 4; the opposite side surfaces of the two support plates 2 are provided with slots 6; the signboard 1 is inserted into the slots 6 of the two support plates 2.
As shown in fig. 4, the actuator 4 includes a volute spiral spring 7, a first connecting block 8, a second connecting block 9, a shaft sleeve 10, a T-shaped guide block 12, a base 13, an arc-shaped plate 14, a first fixed plate 15, a first gear 16, a fourth gear 17, a first rack 18, a U-shaped plate 19, an L-shaped plate 20, an arc-shaped through slot 21, a T-shaped guide slot 22, a second gear 23, a first shaft 24, a third gear 25, a notch 28, and a first expansion plate 30, as shown in fig. 4 and 6, wherein the arc-shaped plate 14 is mounted on the base 13; the two U-shaped plates 19 are symmetrically arranged on the base 13; as shown in fig. 8 and 9, an arc through slot 21 is opened on the side surface of the arc plate 14; t-shaped guide grooves 22 are formed in the outer circular surface and the inner circular surface of the arc-shaped through groove 21; as shown in fig. 3, the shaft sleeve 10 is nested on the rotating shaft 3; two T-shaped guide blocks 12 are symmetrically arranged on the outer circular surface of the shaft sleeve 10; as shown in fig. 5 and 6, the shaft sleeve 10 is located in the arc-shaped through slot 21, and the two T-shaped guide blocks 12 are respectively located in the corresponding T-shaped guide slots 22; the shaft sleeve 10 slides in the arc-shaped through groove 21 through the two T-shaped guide blocks 12; as shown in fig. 3, the spiral spring 7 is nested on the rotating shaft 3, one end of the spiral spring 7 is mounted on the side surface of the shaft sleeve 10 through a first connecting block 8, and the other end is mounted on the corresponding support plate 2 through a second connecting block 9; as shown in fig. 12, the first expansion plate 30 is composed of an expansion outer jacket 26 and an expansion inner plate 27; one end of the telescopic inner plate 27 far away from the telescopic outer sleeve 26 is provided with a notch 28; as shown in fig. 7 and 11, the telescopic outer sleeves 26 of the two first telescopic plates 30 are mounted in the corresponding U-shaped plates 19 in a hinged manner, and one ends of the telescopic inner plates 27 of the two first telescopic plates 30, which are provided with the notches 28, are mounted on the outer circumferential surface of the rotating shaft 3; the two first racks 18 are respectively arranged on the telescopic outer sleeves 26 of the two first telescopic plates 30 through the L-shaped plates 20; the centre line of the first rack 18 is parallel to the centre line of the corresponding telescopic jacket 26; the two first racks 18 are both positioned at the outer side of the triangle formed by the two first expansion plates 30 and the base 13; as shown in fig. 10, the first gear 16 is installed on the outer circumferential surface of the rotating shaft 3, and the first gear 16 is located between the shaft sleeve 10 and the first expansion plate 30; a first fixing plate 15 is arranged on the outer circular surface of one end of the shaft sleeve 10 far away from the support plate 2; two second gears 23 are axially symmetrically arranged on the plate surface of the first fixing plate 15 far away from the T-shaped guide groove 22; two first shafts 24 are symmetrically arranged on the plate surface of the first fixing plate 15 far away from the T-shaped guide groove 22; one end of each first shaft 24 far away from the first fixing plate 15 is provided with a fourth gear 17; two third gears 25 are mounted on the respective first shafts 24, and the third gears 25 are located between the fourth gear 17 and the first fixed plate 15; the second gear 23 is meshed with the first gear 16 and the third gear 25 respectively; as shown in fig. 11, the fourth gear 17 is engaged with the first rack 18.
The length of the billboard 1 is longer than that of the slot 6.
As shown in fig. 10, the second gear 23 and the third gear 25 have the same diameter, and the first gear 16 has a larger diameter than the second gear 23.
As shown in fig. 10, the diameter of the fourth gear 17 is larger than the diameter of the third gear 25.
The point where the hinge point of the first expansion plate 30 and the U-shaped plate 19 projects on the plane where the arc-shaped through groove 21 is a point a, and the sum of the distances from any point of the arc-shaped center line of the arc-shaped through groove 21 to the two points a is equal to the sum of the lengths of the two first expansion plates 30 in any state.
When the signboard 1 is not swung, the spiral spring 7 is not compressed, and the lengths of the two first expansion plates 30 are the same.
In the invention, the swing of the billboard 1 can be transmitted to the rotating shaft 3 through the first ring 5, and then the rotating shaft 3 can rotate; the slot 6 is formed in the support plate 2, the advertising board 1 is inserted into the slot 6, and when the advertising board 1 is blown by wind, the top of the high and wide board can swing around the axis of the rotating shaft 3 along the blowing direction; the length of the billboard 1 is larger than that of the slot 6, so that the billboard 1 can better receive the wind energy, and the amplitude of the swing of the billboard 1 is larger.
For the actuator 4: two T-shaped guide blocks 12 are mounted on the shaft sleeve 10, the shaft sleeve 10 is located in the arc-shaped through groove 21, the two T-shaped guide blocks 12 are respectively located in the corresponding T-shaped guide grooves 22, and under the limiting effect of the T-shaped guide grooves 22, the shaft sleeve 10 cannot rotate around the axis of the shaft sleeve 10, so that the shaft sleeve 10 can only slide along the arc-shaped through groove 21. One end of the scroll spring 7 is installed on the side surface of the shaft sleeve 10 through the first connecting block 8, the other end is installed on the corresponding support plate 2 through the second connecting block 9, and the shaft sleeve 10 cannot rotate, so that when the support plate 2 swings along with the advertising board 1, the scroll spring 7 can compress energy storage, and in addition, the scroll spring 7 can also enable the support plate 2 to move and reset. Third gear 25 and fourth gear 17 are both mounted on first shaft 24, and third gear 25 may then rotate fourth gear 17 via first shaft 24. The diameter of the fourth gear 17 is larger than that of the third gear 25, the diameters of the second gear and the third gear 25 are the same, and the diameter of the first gear 16 is larger than that of the second gear 23, so as to enlarge the transmission ratio between the gears, so that when the rotating shaft 3 rotates in a small range, the rotating shaft 3 can drive the fourth gear 17 to rotate in a large range through the first gear 16, the second gear 23, the third gear 25 and the first shaft 24. The fourth gear 17 is engaged with the first rack 18, so that the fourth gear 17 rotating by a large amplitude can drive the first rack 18 to have a large displacement. The two fourth gears 17 are meshed with the corresponding first racks 18, the rotating directions of the two fourth gears 17 are the same, and the two first racks 18 are both mounted on the telescopic jackets 26 of the corresponding first telescopic plates 30 through the L-shaped plates 20, so that the first telescopic plates 30, the L-shaped plates 20, the first racks 18 and the fourth gears 17 which are positioned on the same side of the rotating shaft 3 are classified into a movement combination; for one of the movement combinations, when the fourth gear 17 gives the corresponding first rack 18 a tendency to move in the direction of the corresponding telescopic jacket 26, the telescopic inner plate 27 of the first telescopic plate 30 relatively protrudes from the telescopic jacket 26 because the telescopic jacket 26 cannot be deformed; in another movement combination, when the fourth gear 17 gives the respective first toothed rack 18 a tendency to move in the direction of the respective telescopic inner plate 27, the telescopic inner plate 27 of the first telescopic plate 30 enters into the telescopic outer sleeve 26 relatively, since the telescopic outer sleeve 26 cannot be deformed. When the first expansion plate 30 in one motion combination is compressed and the first expansion plate 30 in the other motion combination is extended, the rotating shaft 3 moves along the arc-shaped through groove 21 in the direction away from the wind blowing direction, and the advertising board 1 also moves along the rotating shaft 3 in the direction away from the wind blowing direction.
The point that first expansion plate 30 and U template 19 pin joint project on the plane that the logical groove 21 of arc is located is the A point, and the logical groove 21 of arc arbitrary point department of arc central line of groove is equal to two first expansion plates 30 length sums under arbitrary state of two first expansion plates 30 to the distance sum between two A points, and such design just can be guaranteed, and when the first expansion plate 30 compression of two first expansion plates 30 in actuating mechanism 4, when another extension, pivot 3 can slide along the logical groove 21 of arc.
The specific implementation mode is as follows: when the advertising board 1 is not blown by wind, the advertising board 1 does not swing, the scroll spring 7 is not compressed, and the two first expansion plates 30 have the same length; the center of gravity of the tripod is positioned at the center of the tripod.
When the advertising board 1 is blown by wind, the tail end of the base 13 of the tripod along the blowing direction is named as N point; when the signboard 1 is not swung, the distance from the center of gravity to the point N at this time is S1. When the advertising board 1 is continuously blown by wind and swings around the axis of the rotating shaft 3 in the wind blowing direction, the volute spiral spring 7 is compressed, and the advertising board 1 drives the rotating shaft 3 to rotate through the support plate 2 and the first ring 5; the rotating shaft 3 drives the first gear 16 to rotate, the first gear 16 rotates through the second gear 23, the third gear 25 and the fourth gear 17, and the fourth gear 17 and the first gear 16 rotate in the same direction; in the process of rotating the two fourth gears 17, when the fourth gear 17 in the motion combination at the end of the blowing direction gives a tendency to move the corresponding first rack 18 toward the corresponding telescopic outer sleeve 26 in the two motion combinations in the blowing direction, because the telescopic outer sleeve 26 cannot be deformed, the telescopic inner plate 27 in the first telescopic plate 30 enters into the telescopic outer sleeve 26 relatively; when the fourth gear 17 in the movement combination located at the head end in the blowing direction gives a tendency to move the corresponding first rack 18 toward the corresponding inner telescopic plate 27, the inner telescopic plate 27 of the first telescopic plate 30 relatively extends out of the outer telescopic sleeve 26 because the outer telescopic sleeve 26 cannot be deformed. When the first expansion plate 30 in the head end movement combination is compressed and the first expansion plate 30 in the tail end movement combination is extended, the rotating shaft 3 moves along the arc-shaped through groove 21 in the direction away from the wind blowing direction, and the advertising board 1 also moves in the direction away from the wind blowing direction along with the rotating shaft 3; after the rotating shaft 3 moves along the arc-shaped through groove 21 in the direction away from the wind, the center of gravity of the advertising board 1 and the whole tripod shifts in the direction away from the wind, so that the distance from the shifted center of gravity to the point N is S2, and S2 is larger than S1; therefore, before the gravity center of the tripod is not shifted, the tripod with the shifted gravity center can be blown down by larger wind power; the phenomenon that the advertising board 1 is easily blown down by large wind is avoided, so that the advertising board 1 can still stand on the ground to continuously propagate under severe conditions.
After the blowing is stopped, the advertising board 1 is restored to the original position under the restoring action of the spiral spring 7, the two first expansion plates 30 are also restored to the state without deformation in the process of restoring the advertising board 1, and finally the gravity center of the whole tripod is restored to the original position again.
In conclusion, the invention has the main beneficial effects that: the billboard 1 is driven by the wind to swing to a certain extent, the swinging billboard 1 drives the rotating shaft 3 to drive a series of gears to rotate so as to amplify the transmission ratio until the fourth gear 17 can drive the two first expansion plates 30 to perform telescopic motion; the telescopic motion of the two first telescopic plates 30 causes the gravity center of the tripod to move in the direction away from the wind; before the gravity center of the tripod is not shifted, the tripod with the shifted gravity center can be blown down by larger wind power. The invention has simple structure and better use effect.
Claims (6)
1. The utility model provides a prevent down tripod for bill-board which characterized in that: the advertising board comprises an advertising board, a support plate, a rotating shaft, actuating mechanisms, a first ring and slots, wherein two actuating mechanisms are symmetrically arranged at two ends of the rotating shaft; the two support plates are symmetrically arranged on the rotating shaft through the first ring, and are positioned on the two executing mechanism supports; each support plate is matched with a corresponding actuating mechanism; the opposite side surfaces of the two support plates are provided with slots; the advertising board is inserted into the slots of the two bracket plates;
the executing mechanism comprises a volute spiral spring, a first connecting block, a second connecting block, a shaft sleeve, a T-shaped guide block, a base, an arc-shaped plate, a first fixing plate, a first gear, a fourth gear, a first rack, a U-shaped plate, an L-shaped plate, an arc-shaped through groove, a T-shaped guide groove, a second gear, a first shaft, a third gear, a notch and a first telescopic plate, wherein the arc-shaped plate is arranged on the base; the two U-shaped plates are symmetrically arranged on the base; an arc through groove is formed in the side face of the arc plate; t-shaped guide grooves are formed in the outer circular surface and the inner circular surface of the arc-shaped through groove; the shaft sleeve is nested on the rotating shaft; two T-shaped guide blocks are symmetrically arranged on the outer circular surface of the shaft sleeve; the shaft sleeve is positioned in the arc-shaped through groove, and the two T-shaped guide blocks are respectively positioned in the corresponding T-shaped guide grooves; the shaft sleeve slides in the arc-shaped through groove through the two T-shaped guide blocks; the volute spiral spring is nested on the rotating shaft, one end of the volute spiral spring is arranged on the side face of the shaft sleeve through the first connecting block, and the other end of the volute spiral spring is arranged on the corresponding support plate through the second connecting block; the first expansion plate consists of an expansion outer sleeve and an expansion inner plate; one end of the telescopic inner plate, which is far away from the telescopic outer sleeve, is provided with a notch; the telescopic outer sleeves in the two first telescopic plates are arranged in the corresponding U-shaped plates in a hinged mode, and one ends, provided with notches, of the telescopic inner plates in the two first telescopic plates are arranged on the outer circular surface of the rotating shaft; the two first racks are respectively arranged on the telescopic outer sleeves of the two first telescopic plates through the L-shaped plates; the central line of the first rack is parallel to the central line of the corresponding telescopic outer sleeve; the two first racks are both positioned on the outer side of a triangle formed by the two first expansion plates and the base; the first gear is arranged on the outer circular surface of the rotating shaft and is positioned between the shaft sleeve and the first expansion plate; a first fixing plate is arranged on the outer circular surface of one end of the shaft sleeve, which is far away from the support plate; the two second gears are symmetrically arranged on the plate surface of the first fixing plate far away from the T-shaped guide groove through an axis; the two first shafts are symmetrically arranged on the plate surface of the first fixing plate far away from the T-shaped guide groove; one end of each first shaft, which is far away from the first fixing plate, is provided with a fourth gear; the two third gears are respectively arranged on the corresponding first shafts, and the third gears are positioned between the fourth gears and the first fixing plate; the second gear is respectively meshed with the first gear and the third gear; the fourth gear is meshed with the first rack.
2. The anti-falling tripod for the advertising board as claimed in claim 1, wherein: the length of the billboard is longer than that of the slot.
3. The anti-falling tripod for the advertising board as claimed in claim 1, wherein: the diameters of the second gear and the third gear are the same, and the diameter of the first gear is larger than that of the second gear.
4. The anti-falling tripod for the advertising board as claimed in claim 1, wherein: the diameter of the fourth gear is larger than that of the third gear.
5. The anti-falling tripod for the advertising board as claimed in claim 1, wherein: the point of the hinge point of the first expansion plate and the U-shaped plate projected to the plane where the arc-shaped through groove is located is a point A, and the sum of the distances from any point of the arc-shaped center line of the arc-shaped through groove to the two points A is equal to the sum of the lengths of the two first expansion plates in any state.
6. The anti-falling tripod for the advertising board as claimed in claim 1, wherein: when the billboard is not swung, the scroll spring is not compressed, and the lengths of the two first expansion plates are the same.
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| CN201810446607.0A CN108648659B (en) | 2018-05-11 | 2018-05-11 | A prevent down tripod for bill-board |
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| CN201810446607.0A CN108648659B (en) | 2018-05-11 | 2018-05-11 | A prevent down tripod for bill-board |
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| CN108648659A CN108648659A (en) | 2018-10-12 |
| CN108648659B true CN108648659B (en) | 2020-06-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102658877B1 (en) * | 2018-12-24 | 2024-04-17 | 엘지디스플레이 주식회사 | Display device |
| CN110428752A (en) * | 2019-07-02 | 2019-11-08 | 徐州金时利广告有限公司 | A kind of advertising framework has the assembly apparatus of flexible storage winding |
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| CN101615365A (en) * | 2008-06-26 | 2009-12-30 | 上海理工大学 | Windshielding anti-fall device for billboard |
| CN201853425U (en) * | 2010-09-28 | 2011-06-01 | 南通盛利重工机械制造有限公司 | Windproof advertisement board |
| CN205140478U (en) * | 2015-11-29 | 2016-04-06 | 凌御佼 | Advertisement media is with propaganda frame |
| CN107170395A (en) * | 2017-07-17 | 2017-09-15 | 合肥师范学院 | A kind of advertising display board with wind-shielding function |
| CN107804431A (en) * | 2017-10-16 | 2018-03-16 | 西北工业大学 | A kind of wind-force is anti-to topple over marine communication buoy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8028448B2 (en) * | 2008-08-25 | 2011-10-04 | Allal Amrani | Portable sign for real estate and small businesses |
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|---|---|---|---|---|
| CN101615365A (en) * | 2008-06-26 | 2009-12-30 | 上海理工大学 | Windshielding anti-fall device for billboard |
| CN201853425U (en) * | 2010-09-28 | 2011-06-01 | 南通盛利重工机械制造有限公司 | Windproof advertisement board |
| CN205140478U (en) * | 2015-11-29 | 2016-04-06 | 凌御佼 | Advertisement media is with propaganda frame |
| CN107170395A (en) * | 2017-07-17 | 2017-09-15 | 合肥师范学院 | A kind of advertising display board with wind-shielding function |
| CN107804431A (en) * | 2017-10-16 | 2018-03-16 | 西北工业大学 | A kind of wind-force is anti-to topple over marine communication buoy |
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| CN108648659A (en) | 2018-10-12 |
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Effective date of registration: 20200528 Address after: 317100 room 1-310, Sanmen culture and Tourism Industrial Park, No. 32, Huancheng Middle Road, Haiyou street, Sanmen County, Taizhou City, Zhejiang Province Applicant after: Zhejiang Liyuan Culture Communication Co., Ltd Address before: 523000 Dongguan Songshan Lake High-tech Zone, Guangdong Province, 201D, 2nd floor, Building 11, Innovation Science and Technology Park Applicant before: DONGGUAN SONGYAN ZHIDA INDUSTRIAL DESIGN Co.,Ltd. |
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