Semicircular frame body for setting off special-effect fireworks

Abstract

The semicircular frame body comprises a semicircular frame body and a base fixed to the lower end of the semicircular frame body, supporting plates are arranged on the front side and the rear side of the base respectively, one end of each supporting plate is fixedly connected with a supporting block, the other end of each supporting plate is fixedly connected with a fixing block, a containing groove is formed in the base, and the fixing block is fixedly connected with the containing groove. Openings communicating with the storage groove are formed in the positions, close to the fixing blocks, of the front side and the rear side of the base correspondingly, one ends of the fixing blocks extend into the openings and are fixedly connected with worm wheels, connecting rods are rotationally connected into the worm wheels, and the upper ends and the lower ends of the connecting rods penetrate through the worm wheels correspondingly and are fixedly connected with the inner side walls of the openings. A part of the worm gear extends into the storage groove, and a worm meshed with the worm gear is arranged in the storage groove. Through the arrangement of the supporting blocks and the supporting plates, the two sides of the semicircular frame body for setting off the special-effect fireworks are supported, the semicircular frame body is prevented from toppling due to the influence of external force, and therefore the using safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brackets, in particular to a semicircular bracket for setting off special-effect fireworks. Background Art

[0002] In order to increase the visual effect of fireworks and create a festive and joyful atmosphere, the technical requirements for auxiliary equipment are becoming higher and higher, and the design is becoming more and more diverse. At present, large-scale fireworks usually use safe and advanced ignition methods such as electronic remote control ignition. Ignition through electronic ignition is safer and has a high ignition success rate.

[0003] The existing utility model patent with application number: CN202221047270.4 proposes a semicircular frame for setting off special-effect fireworks, including an arc frame and a base. The arc frame includes a first arc plate, a second arc plate and an arc connecting plate...;

[0004] Although the comparative document has the following advantages: it is stable during ignition and increases the effect of ignition, and is highly practical, however, the semicircular frame is easily overturned by external forces such as strong winds during actual use, and its reliability needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to solve the problems raised in the above-mentioned background technology, and to propose a semicircular frame for setting off special-effect fireworks.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A semicircular frame for setting off special-effect fireworks comprises a semicircular frame body and a base fixed at the lower end thereof, support plates are provided on the front and rear sides of the base, one end of the support plate is fixedly connected to a support block, and the other end of the support plate is fixedly connected to a fixing block, a storage groove is provided in the base, and openings communicating with the storage groove are provided on the front and rear sides of the base and near the fixing block, one end of the fixing block extends into the opening and is fixedly connected to a worm gear, a connecting rod is rotatably connected in the worm gear, the upper and lower ends of the connecting rod respectively penetrate the worm gear and are fixedly connected to the inner side wall of the opening, a part of the worm gear extends into the storage groove, a worm engaged with the worm gear is provided in the storage groove, the left and right ends of the worm gear are rotatably connected to the inner side wall of the storage groove respectively, a second gear is fixedly sleeved on one end of the worm gear, a first gear engaged with the second gear is provided in the storage groove, an end of the first gear away from the second gear is fixedly connected to a rotating rod, one end of the rotating rod penetrates the base, and the rotating rod and the base are rotatably connected.

[0008] Preferably, a groove is provided at the lower end of the support block, and a universal wheel is rotatably connected to the inner top of the groove, and the lower end of the universal wheel passes through the groove.

[0009] Preferably, a connecting block is rotatably sleeved on the worm, and the outer side wall of the connecting block is fixedly connected to the inner side wall of the storage groove.

[0010] Preferably, the outer side walls of the support plate and the support block are coated with anti-rust paint.

[0011] Preferably, one end of the rotating rod passing through the base is fixedly connected with a knob.

[0012] Preferably, a rubber pad is fixedly connected to the outer side wall of the knob.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, the support plate and the support block are provided to support the front and rear sides of the semicircular frame body, thereby preventing the semicircular frame body from tipping over due to external forces, thereby improving safety and reliability;

[0015] 2. The support plate can be rotated by setting the knob, the rotating rod, the first gear, the second gear, the worm, the worm wheel and the fixed block, so that the user can unfold and fold the support plate conveniently. In the utility model, the support block and the support plate can be set to support the semicircular frame for setting off special effect fireworks on both sides to prevent it from tipping over due to external force, thereby improving safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a semicircular frame for setting off special-effect fireworks proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the base of a semicircular frame for setting off special-effect fireworks proposed by the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the structure of the semicircular frame at position A for setting off special-effect fireworks.

[0019] In the figure: 1-base, 2-semicircle frame body, 3-support block, 4-support plate, 5-fixed block, 6-knob, 7-connecting rod, 8-worm gear, 9-worm, 10-connecting block, 11-rotating rod, 12-first gear, 13-second gear, 14-universal wheel. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 A semicircular frame for setting off special-effect fireworks, comprising a semicircular frame body 2 and a base 1 fixed at the lower end thereof, a support plate 4 is provided on both the front and rear sides of the base 1, and is used to cooperate with the support plate 4 to support the semicircular frame body 2, one end of the support plate 4 is fixedly connected with a support block 3, and is used to support the support plate 4, and a groove is provided at the lower end of the support block 3, and a universal wheel 14 is rotatably connected to the inner top of the groove, and is used to reduce the friction between the support block 3 and the ground when the support block 3 rotates, and the lower end of the universal wheel 14 passes through the groove, and the outer side walls of the support plate 4 and the support block 3 are coated with anti-rust paint, which is used to play a certain anti-rust role;

[0022] In this embodiment, the other end of the support plate 4 is fixedly connected to a fixing block 5, which is used to drive the support plate 4 to rotate. A storage groove is provided in the base 1. Openings communicating with the storage groove are provided on the front and rear sides of the base 1 and near the fixing block 5. One end of the fixing block 5 extends into the opening and is fixedly connected to a worm gear 8, which is used to drive the fixing block 5 to rotate. A connecting rod 7 is rotatably connected in the worm gear 8 to support the worm gear 8. The upper and lower ends of the connecting rod 7 respectively penetrate the worm gear 8 and are fixedly connected to the inner side wall of the opening. A part of the worm gear 8 extends into the storage groove. A worm 9 meshing with the worm gear 8 is provided in the storage groove to drive the worm gear 8 to rotate. The left and right ends of the worm gear 9 are respectively rotatably connected to the inner side wall of the storage groove. A connecting block 10 is rotatably sleeved on the worm gear 9 to support the worm gear 9 and prevent the worm gear 9 from shaking. The outer side wall of the connecting block 10 is fixedly connected to the inner side wall of the storage groove.

[0023] In this embodiment, a second gear 13 is fixedly sleeved at one end of the worm 9 for driving the worm 9 to rotate. A first gear 12 meshing with the second gear 13 is provided in the storage slot for driving the second gear 13 to rotate. The first gear 12 and the second gear 13 are both helical gears. An end of the first gear 12 away from the second gear 13 is fixedly connected to a rotating rod 11 for driving the first gear 12 to rotate. One end of the rotating rod 11 passes through the base 1, and the rotating rod 11 and the base 1 are rotatably connected. One end of the rotating rod 11 passing through the base 1 is fixedly connected to a knob 6 for facilitating the user to manually rotate the rotating rod 11. A rubber pad is fixedly connected to the outer wall of the knob 6 for preventing slipping during rotation.

[0024] In this embodiment, first manually rotate the knob 6 to drive the rotating rod 11 to rotate, and the rotating rod 11 drives the first gear 12 to rotate, and the meshing effect of the first gear 12 and the second gear 13 drives the worm 9 to rotate, and the meshing effect of the worm 9 and the worm wheel 8 drives the fixed block 5 to rotate, and the fixed block 5 drives the support plate 4 and the support block 3 to rotate, so as to realize the rotation folding or unfolding of the support plate 4 (the support plate 4 is close to and fits the base 1 when it is folded, and the support plate 4 is away from the base 1 when it is unfolded). After unfolding, it can support the front and rear sides of the semicircular frame body 2 to prevent it from tipping over. After folding, it can reduce the overall footprint and facilitate transportation and storage.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A semicircular frame for setting off special-effect fireworks, comprising a semicircular frame body (2) and a base (1) fixed at the lower end thereof, characterized in that: The base (1) is provided with a support plate (4) on both the front and rear sides, one end of the support plate (4) is fixedly connected to a support block (3), and the other end of the support plate (4) is fixedly connected to a fixing block (5). A storage groove is provided in the base (1), and openings communicating with the storage groove are provided on both the front and rear sides of the base (1) and near the fixing block (5). One end of the fixing block (5) extends into the opening and is fixedly connected to a worm gear (8). A connecting rod (7) is rotatably connected in the worm gear (8), and the upper and lower ends of the connecting rod (7) respectively penetrate the worm gear (8) and are fixedly connected to the inner side wall of the opening. A portion of the worm wheel (8) extends into the storage groove, a worm (9) meshing with the worm wheel (8) is provided in the storage groove, the left and right ends of the worm (9) are respectively rotatably connected to the inner side wall of the storage groove, one end of the worm (9) is fixedly sleeved with a second gear (13), the storage groove is provided with a first gear (12) meshing with the second gear (13), one end of the first gear (12) away from the second gear (13) is fixedly connected to a rotating rod (11), one end of the rotating rod (11) passes through the base (1), and the rotating rod (11) and the base (1) are rotatably connected.

2. A semicircular frame for setting off special-effect fireworks according to claim 1, characterized in that: The lower end of the support block (3) is provided with a groove, the inner top of the groove is rotatably connected to a universal wheel (14), and the lower end of the universal wheel (14) passes through the groove.

3. The semicircular frame for setting off special-effect fireworks according to claim 1, characterized in that: A connecting block (10) is rotatably sleeved on the worm (9), and the outer side wall of the connecting block (10) is fixedly connected to the inner side wall of the storage groove.

4. The semicircular frame for setting off special-effect fireworks according to claim 1, characterized in that: The outer side walls of the support plate (4) and the support block (3) are coated with anti-rust paint.

5. The semicircular frame for setting off special-effect fireworks according to claim 1, characterized in that: One end of the rotating rod (11) passing through the base (1) is fixedly connected to a knob (6).

6. A semicircular frame for setting off special-effect fireworks according to claim 5, characterized in that: A rubber pad is fixedly connected to the outer side wall of the knob (6).

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