WO2023103839A1

WO2023103839A1 - Main steel structure, steel structure and dome screen

Info

Publication number: WO2023103839A1
Application number: PCT/CN2022/135009
Authority: WO
Inventors: 朱斌; 姜玲玲; 陈雷; 韩德玉; 沈飞; 王伟琪
Original assignee: 南京洛普股份有限公司; 南京洛普科技有限公司
Priority date: 2021-12-09
Filing date: 2022-11-29
Publication date: 2023-06-15
Also published as: CN218346994U

Abstract

The utility model relates to the technical field of display screens, and in particular, to a main steel structure, a steel structure, and a dome screen. The main steel structure comprises a plurality of racks, each rack is formed by splicing an upper rack and a lower rack, the plurality of racks are arranged at equal intervals, and every two adjacent racks are detachably connected by means of a transverse connecting rod and a diagonal draw bar. The steel structure comprises: a main steel structure; a secondary steel structure detachably assembled on the inner circumference of the main steel structure; and a connecting plate mounting steel frame provided between the main steel structure and the secondary steel structure. The connecting plate mounting steel frame is detachably connected to the main steel structure. The dome screen comprises a steel structure. LED unit modules are mounted on the inner circumferential surface of the steel structure, and a hanging ladder can be hung on the steel structure. The technical problems in the prior art that an overall rack adopted by the main steel structure is large in size, high in integrality and not easy to disassemble and adjust are solved.

Description

A main steel structure, steel structure and dome

technical field

The utility model relates to the technical field of display screens, in particular to a main steel structure, a steel structure and a dome screen.

Background technique

Immersive display products are sought after by the market. As a new type of LED display application, LED dome display has the advantages of high brightness and high contrast. It is gradually replacing passive light-emitting display technologies such as projection or LCD splicing. LED dome can be Applied to various immersive scenes such as flight theaters, planetariums or flight simulations.

Usually, the diameter of the LED dome display screen is several meters, tens of meters, or even tens of meters. Therefore, a larger space is required for installation and debugging. Therefore, some places that have been built with a small space have special volume and weight requirements for the LED dome display.

The steel structure in the prior art has strong integrity and is difficult to disassemble and adjust. For example, the application document with the application number CN201810281639.X discloses a steel structure for large-scale curved LED screens and its layout method, and specifically discloses: a steel structure for large-scale curved LED screens, including sequential connections The main steel structure, secondary steel structure, tertiary steel structure and adjustment layer, as well as the first adjustment device for connecting the main steel structure and the secondary steel structure, and the second adjustment device for connecting the secondary steel structure and the tertiary steel structure The device, the main steel structure includes a plurality of uniformly spaced overall frame, each integral frame includes upright square steel pipes, horizontal square steel pipes, oblique square steel pipes and arc square steel pipes fixed by mutual welding connection or bolt connection ; The secondary steel structure includes a plurality of parallel round steel pipes distributed in latitude, and the tertiary steel structure includes a plurality of square steel pipes distributed in warp. From the above, it can be seen that the main steel structure includes multiple integral frames, there is no connection structure between the integral frames, and the integral frame cannot be disassembled, so it can only form a steel structure of a specific size, and cannot be adjusted according to needs. It is also inconvenient to disassemble and transport.

Utility model content

In order to solve the technical problems in the prior art that the main steel structure adopts an integral frame with strong integrity and is difficult to disassemble and adjust, the utility model provides a main steel structure, a steel structure and a dome screen, which solve the above technical problems. The technical scheme of the utility model is as follows:

A main steel structure, the main steel structure includes a plurality of racks, each of the racks is spliced by an upper rack and a lower rack, a plurality of racks are arranged at equal intervals, and two adjacent racks The frames are detachably connected by horizontal connecting rods and diagonal stay rods.

The main steel structure of the present application, the film frame adopts the structure spliced by the upper film frame and the lower film frame, which can be easily disassembled into a smaller structure, which is convenient for transportation and installation; at the same time, adjacent film frames are connected by horizontal connecting rods, inclined The connecting rod connection can make the assembled main steel structure an integral structure and enhance the overall strength of the main steel structure, that is, it can meet the strength requirements and detachable requirements of the main steel structure at the same time.

According to an embodiment of the present invention, the upper film frame and the lower film frame are plugged together and clamped by a clamping assembly, and the ends connected between the upper film frame and the lower film frame are formed with As for the end plate, the two end plates are inserted through the convex groove structure, and the clamping component wraps and clamps the edges of the two end plates.

According to an embodiment of the present invention, the two ends of the horizontal connecting rod cooperate with the two adjacent film racks through the plug sockets, and the horizontal connecting rod moves from up to down to realize the connection with the two adjacent film racks. The plug-in between, the cross-connecting rod after plug-in is supported by two adjacent racks, and the opening in the horizontal direction of the jack is set as a constriction to prevent the plug from coming out.

According to an embodiment of the present invention, a connecting plate is fixed on the film frame, and several limit seats are formed on the connecting plate, and the connecting plates on two adjacent film frames are horizontally dislocated, and the diagonal stay rod The two ends are respectively limited by the limit seat.

According to an embodiment of the present invention, the diagonal stay rod includes a turnbuckle screw, and two ends of the turnbuckle screw are respectively connected with rod heads, and the outer ends of the two rod heads extend to limit flanges, and the rod heads pass through the The limit seat, the limit flange can abut against the limit seat to realize the limit, and the diagonal tie rod is tightened by tightening the turnbuckle screw.

According to an embodiment of the present invention, the inner and outer ends of two adjacent film racks are connected by horizontal connecting rods, the outer ends of two adjacent film racks are connected by diagonal tie rods, and the pole of the main steel structure is located at the top.

A steel structure comprising:

main steel structure;

a secondary steel structure, the secondary steel structure is detachably assembled on the inner circumference of the primary steel structure;

The connecting plate installation steel frame is arranged between the main steel structure and the secondary steel structure, and the connecting plate installation steel frame is detachably connected with the main steel structure.

According to an embodiment of the present invention, the secondary steel structure includes a plurality of longitudinal bars extending in the warp direction, two adjacent longitudinal bars are connected by cross bars, and the longitudinal bars are connected to the sheets of the primary steel structure. between racks.

According to an embodiment of the present invention, the connecting plate installation steel frame includes a plurality of arc-shaped rods extending in the direction of the warp, the outer surface of the arc-shaped rods extends to limit the limit plate, and the horizontal connecting rods are rotatably connected by screws. There is an eccentric member, the limiting plate can extend between the horizontal connecting rod and the eccentric member, and the eccentric member can rotate and press the limiting plate.

A dome, comprising a steel structure, LED unit modules are installed on the inner peripheral surface of the steel structure, the LED unit modules are used to display picture information, a number of through holes are formed on the LED unit modules, the steel structure A hanging ladder can also be hung on the top. The light-emitting surface of the LED unit module faces the center of the sphere and is used to play the display screen. Considering that the sound of the audience will be reflected by the concave dome, each LED display module is equipped with several through holes to avoid sound reflection. . When the sound is installed on the back (periphery) of the LED unit module, the through hole can also play the role of sound transmission to ensure that the picture and sound are synchronized.

Based on the above-mentioned technical scheme, the technical effect that the utility model can realize is:

1. The main steel structure of the utility model, the film frame adopts the structure spliced by the upper film frame and the lower film frame, which can be easily disassembled into a smaller structure, which is convenient for transportation and installation; at the same time, the adjacent film frames are connected by horizontal The connection of rods and oblique connecting rods can make the assembled main steel structure an integral structure instead of a discrete structure, which can enhance the overall strength of the main steel structure, that is, meet the strength requirements and detachable requirements of the main steel structure at the same time; in addition, the sheet The rack can be further divided into multiple upper film racks and multiple lower film racks according to the needs for flexible division;

2. In the main steel structure of the present utility model, the upper film frame and the lower film frame are plugged together to prevent the relative movement of the two in the horizontal direction, and then the edge of the end plate is clamped by the clamping assembly to prevent the upper film frame from Relatively moving with the lower film frame in the vertical direction, the connection structure of the plug-in and clamping components can be used to realize the detachable connection between the upper film frame and the lower film frame, and the connection between the two is stable; the horizontal connection The rod and the film frame are matched through the plug socket, and when the horizontal connecting rod moves from top to bottom to realize the insertion with the film frame, the film frame can support the horizontal connecting rod, and the shrinking setting of the socket can also prevent the plug from coming out Plug, so that there is no need to set up another connecting structure between the horizontal connecting rod and the frame, the assembly process is very convenient; the two ends of the diagonal rod are limited, and the quick disassembly of the diagonal rod can also be realized; in addition, the diagonal rod includes a flower basket The screw rod can adjust the length of the diagonal rod, which has strong applicability;

3. The steel structure of the present utility model adopts the aforementioned detachable main steel structure, secondary steel structure and connecting plate to install the steel frame, and a detachable connection method is adopted between the main steel structure and the secondary steel structure. The steel structure includes longitudinal bars and cross bars, the longitudinal bars are connected by cross bars, and the secondary steel structure is an integral structure, so it can be inserted into the main steel structure; there is a circumferential The steel frame for connecting plate installation is located in the circumferential gap, which can realize the limit of the steel frame for connecting plate installation, and the steel frame for connecting plate installation is connected with the horizontal connecting rod of the main steel structure, and the steel frame for connecting plate can be installed The specific position is limited; the specific setting is to rotate and compress the limit plate extended on the arc rod through the rotation of the eccentric member, which is convenient for disassembly and assembly; in addition, the longitudinal rod of the secondary steel structure and/or the arc rod of the connecting plate installation steel frame can also be It can be flexibly divided into multiple rod bodies and then spliced together.

4. The dome of the present utility model adopts the aforementioned steel structure, and the size of the steel structure can be adjusted according to the needs to obtain the required dome. In addition, the inner surface of the steel structure is a display surface, which can be hung on the outer surface of the steel structure. An arc-shaped hanging ladder is set up to facilitate the staff to repair the steel structure and LED unit modules at the corresponding position;

5. In the dome of the present utility model, audio equipment can be hung on the back of the steel structure or on the back building, and the sound is transmitted to the audience in the built-in space of the dome through the through hole on the LED unit module. In order to ensure the synchronization of images and sounds, the following two measures can be further taken. The first is to adopt a unified time axis in the front-end video processing stage; the second is to set up scattered sound holes on the LED unit module. The sound holes can be Ensure that the sound spreads quickly to the audience position, avoiding the delay of sound transmission.

Description of drawings

Fig. 1 is the structural representation of main steel structure of the present utility model;

Fig. 2 is the structural representation of sheet holder;

Fig. 3 is an enlarged view of part A of Fig. 2;

Figure 4 is an exploded view of the connection between the upper film frame and the lower film frame;

Fig. 5 is a schematic structural diagram of adjacent film racks connected by horizontal connecting rods;

Fig. 6 is an enlarged view of part B of Fig. 5;

Fig. 7 is a perspective view of a part provided with a jack;

Fig. 8 is a front view of a part provided with a jack;

Fig. 9 is a top view of a portion provided with a jack;

Figure 10 is a schematic structural view of the end of the tie rod;

Figure 11 is a top view of the end of the tie rod;

Fig. 12 is a schematic structural diagram of adjacent film racks connected by diagonal stays;

Fig. 13 is a structural schematic diagram of a position-limiting seat;

Fig. 14 is the structural representation of the steel structure of the present utility model;

Fig. 15 is an enlarged view of part C of Fig. 14;

Fig. 16 is the structural representation of secondary steel structure;

Fig. 17 is a structural schematic diagram of the connection between adjacent longitudinal bars and cross bars in the secondary steel structure;

Fig. 18 is an enlarged view of part D of Fig. 17;

Figure 19 is a structural schematic diagram of the connection between the main steel structure and the secondary steel structure;

Figure 20 is a partially enlarged view of Figure 19;

Fig. 21 is a schematic structural view of the connecting plate installation steel frame;

Fig. 22 is a schematic diagram of the connection between the connecting plate installation steel frame and the main steel structure;

Fig. 23 is an enlarged view of part E of Fig. 22;

Figure 24 is an exploded view of the connection between the connecting plate installation steel frame and the main steel structure;

Figure 25 is a perspective view of the eccentric;

Figure 26 is the front view of the eccentric;

Fig. 27 is a schematic structural diagram of an adjustment layer;

Fig. 28 is an enlarged view of part F of Fig. 27;

Figure 29 is an exploded view of the dome of the present utility model;

Fig. 30 is the structural representation of hanging ladder;

In the figure: 1-main steel structure; 11-film frame; 111-upper frame; 1111-upper end plate; ;113-clamping assembly; 1131-U-shaped piece; 1132-locking piece; 114-jack; 115-hanging groove; Diagonal tie rod; 131-turnbuckle screw; 132-rod head; 1321-limit flange; 14-connecting plate; 15-limit seat; 151-fixed seat; 152-movable seat; 153-tightening piece; Steel structure; 21-longitudinal bar; 211-fixing pin; 212-hook; 22-cross bar; 221-bolt; 3111-avoidance groove; 4-adjustment layer; 41-adjustment steel plate; 5-LED display layer; 6-hanging ladder; 61-hook.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work, all belong to the protection scope of the utility model.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present utility model, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate The orientation or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the referred device Or components must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as limiting the protection scope of the present utility model; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations”. Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the scope of protection of the utility model.

As shown in Figures 1-30, this embodiment provides a main steel structure 1, including a plurality of sheet racks 11, which are arranged equidistantly in the circumferential direction, and two adjacent sheet racks 11 are separated by a horizontal The connecting rod 12 and the diagonal stay rod 13 are detachably connected to form an integral structure.

The main steel structure 1 includes a plurality of racks 11, and the plurality of racks 11 are equidistantly arranged in the circumferential direction. The inner ends of all the racks 11 are located on the same surface. In this embodiment, the inner ends of all the racks 11 are arranged on the same spherical surface. superior. In order to facilitate disassembly and assembly, the film holder 11 is set as a split structure. The film holder 11 includes an upper film holder 111 and a lower film holder 112. The upper film holder 111 and the lower film holder 112 are detachably spliced. The upper film holder 111 includes two Parallel arc-shaped steel pipes, two arc-shaped steel pipes are welded together by radial steel pipes and oblique steel pipes; The steel pipes are welded together.

The lower end of the upper film holder 111 is detachably connected to the upper end of the lower film holder 112 . In this embodiment, the upper film holder 111 and the lower film holder 112 are inserted and fitted and clamped by the clamping assembly 113 . Specifically, the lower ends of the two arc-shaped steel pipes of the upper frame 111 are formed with an upper end plate 1111, and the upper ends of the arc-shaped steel pipes and the upright steel pipes of the lower frame 112 are formed with a lower end plate 1121, and both the upper end plate 1111 and the lower end plate 1121 extend horizontally. , the lower surface of the upper end plate 1111 is formed with at least one protrusion 1112, and the upper surface of the lower end plate 1121 is correspondingly formed with a groove 1122, and the two upper end plates 1111 are respectively plugged with the corresponding ones on the two lower end plates 1121; the upper end plate 1111 and the outer edges of the lower end plate 1112 protrude horizontally relative to the steel pipe where they are located, and the clamping assembly 113 can clamp the outer edges of the upper end plate 1111 and the lower end plate 1112 . In this embodiment, two protrusions 1112 are formed on the lower surface of the upper end plate 1111, and two grooves 1122 are correspondingly formed on the upper surface of the lower end plate 1121, and the protrusions 1112 can be arranged as square protrusions. In addition, a protrusion can be formed on the upper surface of the lower end plate 1121 , and a groove 1122 can be formed on the lower surface of the upper end plate 1111 , so as to realize the insertion between the upper film rack 111 and the lower film rack 112 .

As a preferred technical solution of this embodiment, the clamping assembly 113 includes a U-shaped piece 1131 and a locking piece 1132, the U-shaped piece 1131 encloses the edges of the upper end plate 1111 and the lower end plate 1112, and the locking piece 1132 passes through the U-shaped piece 1131 One side wall of the U-shaped piece 1131 is used to lock the edges of the upper end plate 1111 and the lower end plate 1112 on the other side wall of the U-shaped piece 1131 . Preferably, at least two locking pieces 1132 are correspondingly arranged on each U-shaped piece 1131.

As a preferred technical solution of this embodiment, a long groove 1113 is formed on the upper surface of the upper end plate 1111 away from the lower end plate 1112, and the locking piece 1132 passes through the upper side wall of the U-shaped piece 1131 and extends into the long groove 1113 Internally locking the upper and lower end plates can function as a position-limiting locking member 1132 .

Two adjacent film racks 11 are detachably connected by a horizontal connecting rod 12 . In this embodiment, both ends of the horizontal connecting rod 12 are connected to two adjacent film racks 11 by plugging. In this embodiment, plugs 121 are formed at the two ends of the horizontal connecting rod 12, plugs are formed on the opposite surfaces of two adjacent film racks 11, and jacks 114 are formed in the plugs. The plugs at the two ends of the horizontal connecting rod 12 After the plug 121 slides into the socket 114 from top to bottom, the socket 114 can support the horizontal connecting rod 12 upwards, and at the same time prevent the plug 121 from going out of the socket 114 horizontally.

As a preferred technical solution of this embodiment, as shown in Figure 7-11, the jack 114 is set as a through hole with openings on three sides, the size of the jack 114 gradually decreases from top to bottom, and the horizontal opening of the jack 114 is set as Shrink structure; the plug 121 is adapted to the shape of the jack 114. When the plug 121 slides into the jack 114 from top to bottom, the jack 114 can support the plug 121 upwards, and the horizontal shrinkage of the jack 114 can prevent the plug 121 from being horizontal. Pull out the socket 114. Specifically, the socket 114 and the plug 121 may be set to be correspondingly trapezoidal.

As an alternative structure for jacks and plugs, the plugs can be arranged on the sheet holder 11, the jacks are formed at the end of the horizontal connecting rod 12, the size of the jacks gradually increases from top to bottom, and the plugs are set corresponding to the jacks, so When the horizontal connecting rod 12 moves from top to bottom, when the socket slides on the outside of the plug, the plug can play the role of supporting the socket, and then the sheet frame 11 can support the horizontal connecting rod 12, and the horizontal connecting rod 12 can be connected to the adjacent socket. Two racks 11 are connected together.

Two adjacent film racks 11 are also connected by diagonal stay rods 13 , and the diagonal stay rods 13 obliquely connect two adjacent film racks 11 . Specifically, a connecting plate 14 is fixed on the arc-shaped steel pipe of the sheet frame 11, and a limit seat 15 is arranged on the connecting plate 14. The connecting plates 14 on two adjacent sheet frames 11 are horizontally dislocated, and the two ends of the diagonal stays 13 are respectively It is limited by the limit seats 15 on two adjacent film racks 11 to realize the connection of two adjacent film racks 11 . In this embodiment, the four corners of the connecting plate 14 are provided with limit seats 15, and the two ends of the diagonal stay rod 13 form limit flanges 1321, and the two ends of the diagonal stay rod 13 can pass through the limit seats 15, and the limit protrusions The edge 1321 abuts against the limit seat 15 to realize the limit connection to the diagonal stay rod 13 .

As a preferred technical solution of this embodiment, the diagonal tie rod 13 includes a turnbuckle 131 , two ends of the turnbuckle 131 are respectively connected with rod heads 132 , and the outer ends of the two rod heads 132 away from the turnbuckle 131 extend to limit flanges 1321 . By setting the turnbuckle 131, the overall length of the diagonal stay rod 13 can be adjusted to adapt to the main steel structure 1 of different sizes.

As a preferred technical solution of this embodiment, the limit seat 15 includes a fixed seat 151, a movable seat 152 and a tightening member 153, the fixed seat 151 is fixed on the connecting plate 14, one end of the movable seat 152 is movably matched with the fixed seat 151, and the tightening member 153 passes through the movable seat 152 and is connected with the fixed seat 151, and a limiting hole is formed between the fixed seat 151 and the movable seat 152, and the size of the limiting hole can be adjusted by twisting the tightening member 153. Preferably, the movable seat 152 is in sliding fit with the fixed seat 151 . During assembly, the tightening member 153 can be screwed earlier so that the two ends of the diagonal stay rod 13 can pass through the limit hole, and then the tightening member 153 can be screwed to make the movable seat 152 slide towards the fixed seat 151, and the limit hole is reduced, and the movable seat 152 can cooperate with the fixing seat 151 to press the rod head 132, and the limit flange 1321 can lean against the limit seat 15 to realize the limit connection to the diagonal tie rod 13.

As a preferred technical solution of this embodiment, the radially inner and outer ends of two adjacent film holders 11 are connected by a transverse connecting rod 12, and the radially outer ends of two adjacent film holders 11 are also connected by a diagonal tie rod 13. The pole of the assembled main steel structure 1 is located at the top, and the lower end of the main steel structure 1 is open and can be stood upright.

This embodiment also provides a steel structure, including the above-mentioned main steel structure 1, and also includes a secondary steel structure 2 and a connecting plate installation steel frame 3, the secondary steel structure 2 is arranged on the inner peripheral surface of the main steel structure 1, The connecting plate mounting steel frame 3 is arranged between the main steel structure 1 and the secondary steel structure 2, and both the secondary steel structure 2 and the connecting plate mounting steel frame 3 are detachably connected with the primary steel structure 1.

The secondary steel structure 2 includes a plurality of longitudinal rods 21 extending in the warp direction, and the plurality of longitudinal rods 21 are arranged equidistantly in the circumferential direction, and two adjacent longitudinal rods 21 are connected by cross rods 22 . Specifically, the longitudinal bar 21 is horizontally connected with a fixed pin 211, and a slot is formed on the fixed pin 211, and a latch 221 is formed at both ends of the cross bar 22, and the latch 221 at the two ends of the cross bar 22 can be respectively inserted into the slot to prevent falling off. The piece 23 passes through the bolt 221 and the fixing pin 211 to connect the cross bar 22 and the longitudinal bar 21 together.

As a preferred technical solution of this embodiment, the secondary steel structure 2 is inserted into the primary steel structure 1 . Specifically, a hook 212 is formed on the outer peripheral surface of the longitudinal bar 21 of the secondary steel structure 2. Correspondingly, a hanging groove 115 is formed on the inner peripheral surface of the rack 11 of the primary steel structure 1. During assembly, the hook 212 It can be inserted into the hanging groove 115 from top to bottom. Preferably, each longitudinal rod 21 is formed with a multi-gag insertion hook 212, which can form multiple insertion points and ensure the stability of the connection.

As a preferred technical solution of this embodiment, the connecting plate installation steel frame 3 is arranged between the main steel structure 1 and the secondary steel structure 2, and the connecting plate installation steel frame 3 includes a plurality of arc-shaped rods 31 extending in the warp direction. The rod 31 is detachably connected to the transverse connecting rod 12 of the main steel structure 1 . Specifically, the limit plate 311 is extended on the outer peripheral surface of the arc rod 31, the upper surface of the transverse connecting rod 12 of the main steel structure 1 is provided with a screw 122, the screw 122 is connected with an eccentric member 123, and an avoidance plate 311 is formed on the limit plate 311. Slot 3111, so that the limiting plate 311 can extend between the upper surface of the transverse connecting rod 12 and the eccentric piece 123, and the eccentric piece 123 rotates to compress the limiting plate 311, so that the connecting plate installation steel frame 3 and the main steel The detachable connection of structure 1. The connecting plate installation steel frame 3 is located between the main steel structure 1 and the secondary steel structure 2. On the one hand, it supports part of the weight of the main steel structure 1 to further reduce the error of the main steel structure 1. On the other hand, it is used to install the LED dome display Screen control adapter board.

As a preferred technical solution of this embodiment, there is a circumferential gap between the assembled main steel structure 1 and the secondary steel structure 2, and the connecting plate installation steel frame 3 is located in the circumferential gap, and the main steel structure 1 and the secondary steel structure The structure 2 can cooperate with the limit connecting plate to install the steel frame 3.

This embodiment also provides a dome, which includes the aforementioned steel structure. The inner peripheral surface of the steel structure is equipped with an LED display layer 5 , and the LED display layer 5 is spliced by a plurality of LED unit modules.

As a preferred technical solution of this embodiment, an adjustment layer 4 is installed on the inner peripheral surface of the steel structure, and the LED unit modules are assembled on the adjustment layer 4 . The adjustment layer 4 is spliced by a plurality of adjustment steel plates 41. The adjustment steel plates 41 are assembled on the secondary steel structure 2. The adjustment steel plates 41 are formed with assembly through holes. When assembling, the LED unit module can be adsorbed on the adjustment steel plates by the magnetic steel group. 41, the assembly through hole is used to pass through the power line and the signal line, in addition, it can also realize the functions of sound transmission and heat dissipation.

As a preferred technical solution of this embodiment, the LED unit module includes a PCB board, on which LED lamp beads are arranged in an array, and there are through holes between the LED lamp beads and the LED lamp beads, which can play the role of sound transmission and heat dissipation . The sound can be hung on the main steel structure 1, and the sound passes through the through hole on the LED unit module, which can give the audience a sense of immersion. The light-emitting surface of the LED unit module faces the center of the sphere and is used to play the display screen. The audience's sound will be reflected by the concave dome. Therefore, each LED display module is provided with several through holes to avoid sound reflection. When the sound is installed on the back (periphery) of the LED unit module, the through hole can also play the role of sound transmission to ensure that the picture and sound are synchronized.

As a preferred technical solution of this embodiment, a hanging ladder 6 is also provided. The hanging ladder 6 is arc-shaped. At least two hooks 61 are formed on the top of the hanging ladder 6. The hanging ladder 6 can be hung on the main steel structure 1 through the hooks 61. On the outer surface of the dome, maintenance personnel can climb the hanging ladder 6 to carry out maintenance on the dome, which is very convenient.

The dome of this embodiment adopts a floor-standing installation method, and its back occupies a small space, which is suitable for places with small spaces. Its steel structure can be disassembled into smaller units to facilitate adjustment and transportation. After the assembly of the dome, the pole is located at the top, so that the LED display layer 5 is not easy to fall dust, and will not be damaged by falling objects from high altitude. In addition, the expansion of the horizontal field of view can also be realized, and a 360° panoramic field of view can be realized .

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments. Various changes are made.

Claims

A kind of main steel structure (1), it is characterized in that, described main steel structure (1) comprises a plurality of sheet racks (11), and each described sheet rack (11) is made of upper sheet rack (111) and lower sheet rack (112) are spliced together, a plurality of film holders (11) are arranged at equal intervals, and two adjacent film holders (11) are detachably connected by horizontal connecting rods (12) and diagonal stay rods (13).
A main steel structure (1) according to claim 1, characterized in that the upper frame (111) and the lower frame (112) are plugged and fitted and clamped by a clamping assembly (113) , the connected ends of the upper film holder (111) and the lower film holder (112) are formed with end plates, and the two end plates are inserted through the raised groove structure, and the clamping assembly (113) Wrap and clamp the edges of the two end panels.
A main steel structure (1) according to claim 1, characterized in that, the two ends of the horizontal connecting rod (12) are matched with two adjacent sheet frames (11) through plug sockets, so The horizontal connecting rod (12) moves from up to down to realize the insertion between the adjacent two film holders (11), and the inserted horizontal connecting rod (12) is connected by the adjacent two film holders (11). ) support, the opening in the horizontal direction of the jack (114) is set as a constriction to prevent the plug (121) from coming out.
A main steel structure (1) according to claim 1, characterized in that, a connection plate (14) is fixed on the sheet frame (11), and several limit positions are formed on the connection plate (14). The seat (15), the connecting plates (14) on two adjacent film racks (11) are horizontally dislocated, and the two ends of the diagonal stay rod (13) are respectively limited by the limit seat (15).
A kind of main steel structure (1) according to claim 1, it is characterized in that, described diagonal stay rod (13) comprises turnbuckle screw (131), and the two ends of described turnbuckle screw (131) are respectively connected with bar head ( 132), the outer ends of the two rod heads (132) extend a limit flange (1321), the rod head (132) passes through the limit seat (15), and the limit flange (1321) can The limit is realized by leaning against the limit seat (15), and the diagonal tie rod (13) is tightened by tightening the turnbuckle screw (131).
A main steel structure (1) according to claim 1, characterized in that the inner and outer ends of two adjacent sheet frames (11) are connected by transverse connecting rods (12), and the two adjacent sheet frames (11) ) is connected by a diagonal tie rod (13), and the pole of the main steel structure (1) is at the top.
A steel structure, characterized in that it comprises:

The main steel structure (1) described in any one of claims 1-6;

a secondary steel structure (2), the secondary steel structure (2) is detachably assembled on the inner periphery of the primary steel structure (1);

The connecting plate is installed with a steel frame (3), and the connecting plate is installed with a steel frame (3) arranged between the main steel structure (1) and the secondary steel structure (2), and the connecting plate is installed with a steel frame ( 3) It is detachably connected with the main steel structure (1).
The steel structure according to claim 7, characterized in that, the secondary steel structure (2) comprises a plurality of longitudinal rods (21) extending in the meridian direction, and passing between two adjacent longitudinal rods (21) The horizontal bar (22) is connected, and the longitudinal bar (21) is inserted into the frame (11) of the main steel structure (1).
The steel structure according to claim 7, characterized in that, the connecting plate installation steel frame (3) includes a plurality of arc-shaped rods (31) extending in the meridian direction, and the outer surfaces of the arc-shaped rods (31) The limit plate (311) is extended on the surface, and the eccentric member (123) is connected to the horizontal connecting rod (12) through the rotation of the screw (122), and the limiting plate (311) can extend to the horizontal connecting rod (12). ) and the eccentric member (123), the eccentric member (123) can rotate and press the limiting plate (311).
A dome, characterized in that it comprises the steel structure described in any one of claims 7-9, an LED unit module is installed on the inner peripheral surface of the steel structure, and the LED unit module is used to display picture information, so A plurality of through holes are formed on the LED unit module, and hanging ladders (6) can also be hung on the steel structure.