CN111115287A

CN111115287A - Rapid Assembly formula fireworks net curtain device of collapsible transportation

Info

Publication number: CN111115287A
Application number: CN201911372072.8A
Authority: CN
Inventors: 贺虎成; 刘占卿; 王铁龙; 尹续峰; 姜初伟; 刘丹; 白文静; 黄伟; 李志强; 杨垚
Original assignee: 63921 Troops of PLA
Current assignee: 63921 Troops of PLA
Priority date: 2019-09-30
Filing date: 2019-12-27
Publication date: 2020-05-08
Anticipated expiration: 2039-12-27
Also published as: CN111115287B

Abstract

The invention discloses a quickly assembled firework net curtain device capable of being folded and transported, and belongs to the technical field of civil engineering building structures. The device is formed by coplanar splicing of a plurality of module units, wherein each module unit comprises a crane, a lifting mechanism, a net cage, a net curtain and a truss girder; the net curtain is folded and stored in the net box, the upper end of the net curtain is installed on the truss girder through the lifting mechanism, the truss girder is lifted by the crane, the truss girder drives the net curtain to be unfolded from the net box while being lifted, and the lifting mechanism installed on the net box realizes the lifting and the lowering of the net curtain after the truss girder is lifted in place. The invention can realize the rapid lifting switching and integral hoisting of a plurality of firework net curtains and LED net curtains, reduces the field installation workload, and breaks through the limitation of short operation time.

Description

Rapid Assembly formula fireworks net curtain device of collapsible transportation

Technical Field

The invention belongs to the technical field of civil engineering building structures, and particularly relates to a folding and transporting quick-assembly firework screen device.

Background

The steel wire mesh of conventional net curtain fireworks (namely, frame fireworks) is bound on the fixed support, the fireworks are bound on the steel wire mesh, and the steel wire mesh is suspended to bear the fireworks by building the fixed support. The large conventional net curtain fireworks have to build a bearing platform of a steel wire net in a setting-off place in advance to hang the steel wire net, then bind the fireworks on the steel wire net, and set off the fireworks at a preset time after all the fireworks are debugged.

The largest conventional screen fireworks currently set off on a scale of 40m x 30 m. The steel wire mesh fireworks have the following defects: firstly, the device occupies a field, a fixed platform must be built at a burning point before the implementation of the net curtain fireworks, and the device can not move during field construction; secondly, the preparation time is long, the building of a fixed platform, the hanging of a net, the binding of fireworks, the connection of wires, the detection and debugging and the like must be implemented at a burning point, and the installation, detection and debugging time of the 40m 30m net screen fireworks is about seven days; thirdly, the function is single, only one fixed steel wire mesh can be built on the spot generally, and the fireworks can be set off only once. Fourthly, the dismantling and the evacuation time are long. Because the fixed support is built on site, the dismounting and evacuation time is about 1 day. The method forms a great technical problem for some special sites which are short in field installation time, need to be transferred and cannot be occupied in advance, is large in scale and needs to be set off for multiple times, and fireworks display performances with complex display functions are limited.

Disclosure of Invention

In view of the above, the invention provides a foldable and transportable fast-assembly firework net curtain device, which can realize fast lifting switching and integral hoisting of a plurality of firework net curtains and LED net curtains, reduce field installation workload, and break through the limitation of short operation time.

A fast-assembly firework net curtain device capable of being transported in a foldable mode is formed by splicing a plurality of module units in a coplanar mode, and each module unit comprises a crane, a lifting mechanism, a net cage, a net curtain and a truss girder; the net curtain is folded and stored in the net box, the upper end of the net curtain is installed on the truss girder through the lifting mechanism, the truss girder is lifted by the crane, the truss girder drives the net curtain to be unfolded from the net box while being lifted, and the lifting mechanism installed on the net box realizes lifting and lowering of the net curtain after the truss girder is lifted in place.

Further, the net curtain comprises an LED curtain and a flame curtain, the net box comprises an LED box and a net curtain box, and the LED curtain and the flame curtain are correspondingly folded in the LED box and the net curtain box.

Furthermore, the module unit comprises an LED screen and a plurality of flame and fire screens, and the LED screen and the plurality of flame and fire screens are arranged at equal intervals in a front-back sequence.

Furthermore, the hoisting mechanism comprises a winch, a steel wire rope and a pulley block, the winch is fixedly installed on the net cage, the pulley block is fixed on the truss girder, one end of the steel wire rope is fixed on a winding drum of the winch, the other end of the steel wire rope is fixedly connected with the net curtain after bypassing the fixed pulley block, and the steel wire rope drives the net curtain to be folded and unfolded through forward and reverse rotation of the winch.

Furthermore, the flame and fire curtains are composed of steel wire ropes and wire meshes, and the front-to-back distance between the suspension of the adjacent flame and fire curtains is more than 1360 mm; the LED screen is woven by steel strands, and polyurethane is sealed outside the steel strands.

Has the advantages that:

1. the invention divides the complete firework net curtain into a plurality of module units, each module unit can form the firework net curtain with the required area by making the net curtains coplanar after being arranged in parallel, the module units can be folded, transported and integrally lifted, the time required by site construction and withdrawing is saved, and the requirement for site occupation is saved.

2. The net curtain comprises the LED curtain and the multiple flame and fire curtains, the LED curtain and the multiple flame and fire curtains can be lifted and lowered independently, and each flame and fire curtain can be provided with the flame combination with different patterns according to artistic design, so that the set-off performance of various flames can be realized, and the expression diversity of the flame and fire net curtain device is improved.

Drawings

FIG. 1 is a front view of a collapsible, transportable, quick-mount pyrotechnic screen assembly of the present invention;

FIG. 2 is a side view of the collapsible ready-assembled pyrotechnic screen assembly of the present invention;

FIG. 3 is a front view of a screen in the collapsible ready-to-transport pyrotechnic screen assembly of the present invention;

FIG. 4 is a side view of the collapsible transport of the ready-to-assemble pyrotechnic net screen assembly of the present invention in a collapsed transport position;

FIG. 5 is a side view of the collapsible transport quick-mount pyrotechnic screen assembly of the present invention in a suspended condition;

FIG. 6 is a side view of the collapsible ready-assembled pyrotechnic screen assembly of the present invention in a raised position;

fig. 7 is a side view of the first screen of fireworks folded into boxes.

The system comprises a crane 1, a truss beam 2, an LED screen 3, an LED box 4, a net screen box 5, a flame screen 6, a steel wire rope 7 and a winch 8.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

As shown in the attached figure 1, the invention provides a foldable and transportable fast-assembly firework net curtain device, the net curtain device adopts a structural form that three unit truss beams and a net curtain are hung by six cranes, the whole net curtain device is divided into three module units, and each module unit is hoisted by two 250-ton cranes 1. Each unit is 29.9m wide and 25m high, and the three units are hoisted on site simultaneously. After integral hoisting, a firework net curtain with the width of 90m and the height of 25m is formed.

As shown in the attached figure 2, one module unit comprises a crane 1, a lifting mechanism, an LED box 4, a net curtain box 5, a net curtain and a truss girder 2, wherein the net curtain comprises a flame curtain 6 and an LED curtain 3, the flame curtain 6 is composed of a steel wire rope with the diameter of 2mm and 6mm and a No. 22 steel wire net with the mesh spacing of 25 multiplied by 25mm, the flame curtain is used for binding flames and can be folded, the folding width is about 0.6m, the folding height of the net curtain with the height of 25m is about 1.1m, and the distance between the front and the rear of the suspension of the flame curtain is 1360 mm. The LED screen adopts a steel strand with the diameter of 0.7mm, polyurethane is sealed outside the steel strand, and the mesh specification is 40 multiplied by 60mm, and the LED screen can also be folded.

The truss girder 2 is a trapezoid section, the length of the truss girder 2 is 29.8m, the height is 1.0m, the width of the lower bottom is 4.0m, the width of the upper bottom is 2.94m, and the total weight of the three truss girders 2 is 22.5 tons. The Q235 square steel tube is adopted for manufacturing, and the truss girder 2 is used for suspending the flame fire curtain 6, the LED curtain 3 and the lifting mechanism.

The screen box 5 is 29.7m long, 5.1m wide, 1.885m high and weighs 50 tons, and the total weight of the three module units is 150 tons. The net curtain box 5 is composed of an H-shaped steel base and a railing, the net curtain box 5 is used for transporting a folding flame fire curtain and an LED curtain, and the integrated transportation of the net curtain box, the truss girder 2 and the lifting mechanism and the quick integral lifting of the flame fire curtain are realized. During transportation and standby, the net curtain with the height of 25m can be folded to be 0.6m wide and 1.1m high and stored in the net curtain box 5; the net curtain box 5 is also used as a ground counterweight to straighten the net curtain and prevent the net curtain from shaking under the action of wind load.

The lifting mechanism comprises winches 8 and 156 groups of pulley blocks and a steel wire rope 7 of about 2250m, the winches 8 comprise a manual winch and an electric winch, and the pulley blocks are mounted on the truss girder 8. The lifting mechanism is used for lifting the LED curtain and putting down the flame and fire curtain after the flame and fire are set off, and the LED curtain falls back into the net curtain box 5.

The working process is as follows:

the folding transportation process is as shown in the attached figure 4, the flame curtain 6 and the LED curtain 3 are folded according to the preset width (about 0.6m) and placed in the net curtain box 5 and the LED box 4, the flame curtain 6 and the LED curtain 3 are integrally connected with the truss girder 2 and the net curtain box 5 to be transported and hoisted, the hoisting frequency is reduced, and the installation time is saved.

The whole lifting process is shown in figure 5, after the three module units are integrally transported in place, the truss girder of each module unit and the four net curtains are lifted by two cranes. Six cranes 1 of the three units are synchronously lifted.

The lifting and positioning process is shown in figure 6, and in the lifting process, the LED and the firework device are simultaneously checked, and the firework net connection among the units is carried out. After the height of the net curtain reaches 25m, the bottom of the net curtain is connected and tensioned with the net curtain box 5 and the LED box 4, and the net curtain is prevented from shaking under wind load.

The process of retracting and releasing the screen is shown in the attached figure 7, and the LED screen 3 is lowered by an electric winch before the flame-off fire screen is set off each time. After the LED screen 3 is set off, the LED screen is lifted by the electric winch, and the lifting time is about 2 minutes. After being sequentially set off, the three fireworks screens 6 are manually put down, folded and dropped back to the net screen box 5, and the dropping time is about 3 minutes. In special cases, the lifting can be carried out by hand.

The fireworks and the LED screen with the height of 25m are folded in the screen box and are directly transported to a performance site from a manufacturing site, and the positioning, the integral lifting, the detection and the debugging of the LED and the fireworks of the screen device on a square can be realized within 2 hours.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fast-assembly firework net curtain device capable of being transported in a foldable mode is characterized in that the device is formed by splicing a plurality of module units in a coplanar mode, and each module unit comprises a crane, a lifting mechanism, a net cage, a net curtain and a truss girder; the net curtain is folded and stored in the net box, the upper end of the net curtain is installed on the truss girder through the lifting mechanism, the truss girder is lifted by the crane, the truss girder drives the net curtain to be unfolded from the net box while being lifted, and the lifting mechanism installed on the net box realizes lifting and lowering of the net curtain after the truss girder is lifted in place.

2. The foldably transportable quickly assembled firework screen device as claimed in claim 1, wherein the screen comprises an LED screen and a firework screen, and the net box comprises an LED box and a screen box, and the LED screen and the firework screen are correspondingly folded in the LED box and the screen box.

3. The collapsible transportable quick-fit pyrotechnic net curtain device of claim 1 or 2, wherein the modular unit includes one LED curtain and a plurality of pyrotechnic curtains, the LED curtain and the plurality of pyrotechnic curtains being arranged at equal intervals in a front-to-back sequence.

4. The rapidly assembled fireworks screen device of collapsible transportation of claim 3, wherein the lifting mechanism comprises a winch, a wire rope and a pulley block, the winch is fixedly installed on the screen box, the pulley block is fixed on the truss girder, one end of the wire rope is fixed on a winding drum of the winch, the other end of the wire rope is fixedly connected with the screen after passing around the pulley block, and the wire rope drives the screen to be folded and unfolded by the forward and reverse rotation of the winch.

5. The collapsible transportable ready-to-assemble firework screen apparatus of claim 4, wherein the firework screen is made of wire rope and wire mesh, and the distance between the front and rear of the adjacent firework screen is more than 1360 mm; the LED screen is woven by steel strands, and polyurethane is sealed outside the steel strands.