CN111739448A

CN111739448A - Intelligent building demonstrates and uses 3D projection arrangement with adjustable sand table

Info

Publication number: CN111739448A
Application number: CN202010746786.7A
Authority: CN
Inventors: 黄功桥; 朱雅叶
Original assignee: Shenzhen Hongwei Time Automatic Control Co ltd
Current assignee: Shenzhen Hongwei Time Automatic Control Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-10-02

Abstract

The invention discloses a 3D projection device with an adjustable sand table for intelligent building display, and belongs to the field of 3D projection. A3D projection device with an adjustable sand table for intelligent building display comprises a base, a projection plate and a first display frame, wherein a projection table is arranged at the top of the base, a slide rail is arranged on the side of the projection table, a first slide rod is arranged inside the slide rail, a connecting belt is arranged on the side of the first slide rod, a winding shaft is arranged at the end part of the connecting belt, a first spring is arranged on the other side of the first slide rod, a rotating shaft is arranged at the end part of the first slide rod, a sliding block is arranged on the outer side of the rotating shaft, and the side of the sliding block is connected with a sliding groove; the holographic projection device is arranged, the three-dimensional projection of the corresponding building can be carried out through operating the control equipment, so that the comprehensive demonstration and exhibition are facilitated, the adjustable sand table is arranged on the side of the equipment, the building model can be flexibly adjusted and disassembled as required, and the building model can be visually displayed in cooperation with the corresponding projection.

Description

Intelligent building demonstrates and uses 3D projection arrangement with adjustable sand table

Technical Field

The invention relates to the technical field of 3D projection, in particular to a 3D projection device with an adjustable sand table for intelligent building display.

Background

With the development of science and technology, compared with the prior art that explanation demonstration is carried out through a fixed simulation building, people can carry out 360-degree panoramic exhibition through controlling a large screen in the production and sales of the house at the present stage, and can also carry out simulation demonstration through a sand table and projection to display a real scene in a three-dimensional mode, so that people can feel the completion state of the building and the environment more intuitively; with the guidance of science fiction movies and commercial propaganda, the concept of holographic projection is gradually extended to commercial activities such as stage performance, exhibition and exhibition, and the like, and the explanation and display effects of buildings are effectively improved by combining the concepts.

Through the retrieval, chinese patent is granted No. CN 201920744642.0's patent, discloses a concatenation assembled building show model device, including the toughened glass cover, the front side rotation of toughened glass cover is connected with toughened glass cover door, and the bottom fixedly connected with show platform of toughened glass cover, the show platform recess has been seted up to the inboard of show platform's upper surface, and four bracing pieces of show platform's lower fixed surface are connected with, four mount pad recesses are no less than offered on the surface of show platform recess, the inside embedding of mount pad recess is provided with the mount pad. One of the assembled building show model device of concatenation in the above-mentioned patent has following not enough: the bandwagon has the advantages that the display effect is single, the bandwagon is mostly a single building model, the conditions of displaying different angles and the inside cannot be flexibly adjusted, the building model is adjusted and disassembled, and the bandwagon has certain limitation and has certain influence on the display effect of equipment.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the display effect is single, most of the display effects are single building models, the conditions of displaying different angles and interiors cannot be flexibly adjusted, the adjustment and disassembly and assembly of the building models have certain limitations, and the display effect of equipment is influenced, and provides a 3D projection device with an adjustable sand table for intelligent building display.

In order to achieve the purpose, the invention adopts the following technical scheme:

1. A3D projection device with an adjustable sand table for intelligent building display comprises a base, a projection plate and a first display frame, wherein the top of the base is provided with a projection table, the side of the projection table is provided with a slide rail, a first slide rod is arranged inside the slide rail, the side of the first slide rod is provided with a connecting belt, the end of the connecting belt is provided with a winding shaft, the other side of the first slide rod is provided with a first spring, the end of the first slide rod is provided with a rotating shaft, the outer side of the rotating shaft is provided with a slide block, the side of the slide block is connected with a slide groove, the projection plate is arranged at the side of the slide groove, a fixed connection is arranged between the slide groove and the projection plate, a hydraulic rod is arranged at the side of the base, the end of the hydraulic rod is connected with a lifting frame, the side of the lifting frame is, the bottom of the lifting block is provided with a second spring, and the side of the lifting block is provided with a projection frame.

Preferably, the below of projection frame is provided with the fixed slot, first show shelf is installed in the top of fixed slot, and the top of first show shelf has seted up the regulation rail, the inside of regulation rail is provided with the slide, and the end connection of slide has the pulley, the avris of regulation rail is provided with the third spring, and the tip of third spring is provided with the bullet and detains, the avris of regulation rail has the constant head tank in advance, the avris of first show shelf is fixed with the second slide bar, and the outside of second slide bar runs through there is the slide cartridge to the avris of slide cartridge is provided with the connecting axle, the outside of connecting axle is provided with the second show shelf, and the outside of second show shelf is provided with spacing rail, the avris of spacing rail is provided with the buckle, and the outside of buckle is provided with the rubber spare, the avris of first show shelf is provided with the spread.

Preferably, the first sliding rod forms a sliding structure through a connecting belt and the sliding rail, the first sliding rod and the winding shaft form a transmission structure through the connecting belt, and the central line of the connecting belt and the central line of the first spring are overlapped.

Preferably, the sliding block and the first sliding rod form a rotating structure through a rotating shaft, and the sliding block and the sliding groove are arranged in parallel.

Preferably, the lifting block forms a lifting structure with the fixed rod through the second spring, and the fixed rod is perpendicular to the lifting frame.

Preferably, the sliding seat and the adjusting rail form a sliding structure through a pulley, and the sliding seat and the pulley are arranged perpendicularly to each other.

Preferably, the elastic buckle forms a lifting structure through the third spring and the adjusting rail, and the elastic buckle is symmetrically arranged relative to the central axis of the positioning groove.

Preferably, the second display frame forms a rotating structure through the connecting shaft and the sliding cylinder, the second display frame forms a sliding structure through the sliding cylinder and the second sliding rod, and the moving range of the connecting shaft is 0-180 degrees.

Preferably, the second display frame is clamped with the connecting groove through a clamping structure, and the second display frame and the connecting groove are arranged in parallel.

Compared with the prior art, the invention provides the intelligent building 3D projection device with the adjustable sand table for display, which has the following beneficial effects:

1. the rolling shaft in the equipment is operated and controlled to rotate, so that the rolling shaft drives the connecting band on the outer side to be folded and unfolded, the first sliding rod at the end part can smoothly reciprocate in the sliding rail, and the first spring arranged at the other end can ensure that the first sliding rod can move reversely when the rolling shaft loosens the connecting band, so that the equipment can realize reciprocating motion, and the lifting and falling of the projection plate above the equipment are convenient to adjust;

2. the lifting frame of the equipment can be lifted along with the operation of the hydraulic rod on the side to adjust the height of the projection according to the requirement when the equipment is used, the projection height can be adjusted according to the requirement by matching with a pure-color sand table below, the lifting frame on the side of the equipment can be flexibly adjusted and adapted to the requirements of different projections, the display effect of the equipment can be more flexibly enriched, then the sliding seat is installed and slides into the adjusting rail through the end opening of the adjusting rail, the sliding seat can slide in the adjusting rail to adjust the use position, a display model is arranged above the sliding seat, the plain building models on the first display frame are arranged according to the requirement by dismounting and adjusting, the equipment can be arranged according to the requirement and can be installed and adjusted with specific building models, products can be directly and visually displayed by matching with the top projection, when the sliding seat slides to a proper position, the sliding seat can be directly pushed into the positioning groove on the, the display model can be flexibly adjusted and fixed at a proper position by the stretching of the elastic buckle and the third spring, and is convenient to disassemble, assemble and move flexibly;

3. the lower second showing stand can be pulled outwards along the second sliding rod through the sliding cylinder, and the second showing stand is adjusted in a rotating mode through the connecting shaft, so that the inverted second showing stand is rotated, flattened and erected at the top of the first showing stand, the second showing stand can be conveniently stored and opened, different showing stands required by showing can be replaced, space occupation is reduced, after the second showing stand is opened, the second showing stand is pushed inwards to enable buckles at the end part of the second showing stand to be mutually aligned and occluded with connecting grooves above the fixed grooves, the internal rubber pieces can be effectively fixedly occluded, the use stability of the equipment is favorably ensured while the second showing stand of the equipment is opened, the guide rail arranged above the second showing stand is an annular rail in the same form as that of the first showing stand, different showing stands can be flexibly selected to carry out building arranging and showing according to needs, and the application range of the equipment is increased, the display effect is improved, the operation is simple and the use is convenient.

The part which is not involved in the device is the same as the prior art or can be realized by adopting the prior art, the invention can be conveniently communicated with other operators through communication equipment, and the internal near-electricity alarm device can be conveniently disassembled and assembled for use, thereby being beneficial to the maintenance and detection of the equipment, effectively improving the safety protection effect and reducing the probability of danger.

Drawings

Fig. 1 is a schematic side view of a 3D projection apparatus for intelligent building display with an adjustable sand table according to the present invention;

fig. 2 is a schematic top view of a projection plate of the 3D projection device for intelligent building exhibition with an adjustable sand table according to the present invention;

FIG. 3 is a schematic side view of the internal structure of a projection plate of the 3D projection device with an adjustable sand table for intelligent building exhibition, according to the present invention;

fig. 4 is a schematic view of a connection structure of a projection plate lifting frame and a fixing rod of the 3D projection device for intelligent building exhibition with an adjustable sand table provided by the invention;

fig. 5 is a schematic top view of a first display rack of the 3D projection apparatus for displaying an intelligent building with an adjustable sand table according to the present invention;

FIG. 6 is a schematic diagram of a side view of an internal structure of an adjusting rail of the 3D projection device with an adjustable sand table for intelligent building exhibition, according to the present invention;

fig. 7 is a schematic view of a connection structure of a buckle and a connection groove of the 3D projection device for displaying an intelligent building with an adjustable sand table according to the present invention.

In the figure: 1. a base; 2. a projection table; 3. a slide rail; 4. a first slide bar; 5. a connecting belt; 6. a winding shaft; 7. a first spring; 8. a rotating shaft; 9. a slider; 10. a chute; 11. a projection plate; 12. a hydraulic lever; 13. a lifting frame; 14. a lifting block; 15. fixing the rod; 16. a second spring; 17. a projection frame; 18. fixing grooves; 19. a first display shelf; 20. adjusting the rail; 21. a slide base; 22. a pulley; 23. a third spring; 24. snapping; 25. positioning a groove; 26. a second slide bar; 27. a slide cylinder; 28. a connecting shaft; 29. a second display shelf; 30. a limit rail; 31. buckling; 32. a rubber member; 33. and connecting the grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

2. Referring to fig. 1-7, a 3D projection device for intelligent building exhibition with an adjustable sand table comprises a base 1, a projection table 2, a slide rail 3, a first slide bar 4, a connection belt 5, a winding shaft 6, a first spring 7, a rotating shaft 8, a slide block 9, a slide groove 10, a projection plate 11, a hydraulic rod 12, a lifting frame 13, a lifting block 14, a fixing rod 15, a second spring 16, a projection frame 17, a fixing groove 18, a first exhibition frame 19, an adjusting rail 20, a slide carriage 21, a pulley 22, a third spring 23, a snap fastener 24, a positioning groove 25, a second slide bar 26, a slide cylinder 27, a connection shaft 28, a second exhibition frame 29, a limiting rail 30, a snap 31, a rubber piece 32 and a connection groove 33, wherein the projection table 2 is arranged on the top of the base 1, the slide rail 3 is arranged on the side of the projection table 2, the first slide bar 4 is arranged inside the slide rail 3, the connection belt 5 is arranged on, and the tip of connecting band 5 is provided with rolling shaft 6, the opposite side of first slide bar 4 is provided with first spring 7, the tip of first slide bar 4 is provided with pivot 8, and the outside of pivot 8 is provided with slider 9, and the avris of slider 9 is connected with spout 10, projection board 11 is installed in the avris of spout 10, and be fixed connection between spout 10 and the projection board 11, hydraulic stem 12 sets up in the avris of base 1, and the end connection of hydraulic stem 12 has crane 13, the avris of crane 13 is provided with elevator 14, and the inside of elevator 14 has run through dead lever 15, the bottom of elevator 14 is provided with second spring 16, the avris of elevator 14 is provided with projection frame 17.

Further, a fixing groove 18 is provided below the projection frame 17, a first display frame 19 is installed on the top of the fixing groove 18, and the top of the first display rack 19 is provided with an adjusting rail 20, the inside of the adjusting rail 20 is provided with a slide seat 21, and the end of the sliding base 21 is connected with a pulley 22, the side of the adjusting rail 20 is provided with a third spring 23, and the end of the third spring 23 is provided with a spring buckle 24, the side of the adjusting rail 20 is reserved with a positioning slot 25, the side of the first display rack 19 is fixed with a second slide bar 26, the outer side of the second slide bar 26 is penetrated with a slide cylinder 27, and a connecting shaft 28 is provided at the side of the slide cylinder 27, a second display frame 29 is provided at the outside of the connecting shaft 28, and the outer side of the second showing stand 29 is provided with a limit rail 30, the side of the limit rail 30 is provided with a buckle 31, and the outer side of the buckle 31 is provided with a rubber 32, and the side of the first display frame 19 is provided with a connecting groove 33.

Furthermore, the first sliding rod 4 forms a sliding structure with the sliding rail 3 through a connecting belt 5, the first sliding rod 4 and the winding shaft 6 form a transmission structure through the connecting belt 5, and the central line of the connecting belt 5 and the central line of the first spring 7 coincide with each other, so that the equipment can realize reciprocating motion, and the lifting and the falling of the upper projection plate 11 can be conveniently adjusted.

Furthermore, the sliding block 9 and the first sliding rod 4 form a rotating structure through the rotating shaft 8, and the sliding block 9 and the sliding groove 10 are arranged in parallel, so that the angle of the projection plate 11 can be adjusted according to the situation and the projection space on the lower projection table 2, the equipment can effectively perform holographic projection of buildings, and people can feel and visit more intuitively.

Furthermore, the lifting block 14 forms a lifting structure with the fixing rod 15 through the second spring 16, and the fixing rod 15 is perpendicular to the lifting frame 13.

Furthermore, the sliding base 21 and the adjusting rail 20 form a sliding structure through the pulley 22, and the sliding base 21 and the pulley 22 are perpendicular to each other, so that the equipment can be used for arranging the buildings and installing and adjusting specific building models as required, and directly and visually displaying products by matching with top projection.

Furthermore, the elastic buckle 24 forms a lifting structure with the adjusting rail 20 through the third spring 23, and the elastic buckle 24 is symmetrically arranged about the central axis of the positioning groove 25, so that the display model can be flexibly adjusted and fixed at a proper position, and the display model is convenient and fast to disassemble and assemble and is flexible to move.

Furthermore, the second display frame 29 forms a rotating structure through the connecting shaft 28 and the sliding cylinder 27, the second display frame 29 forms a sliding structure through the sliding cylinder 27 and the second sliding rod 26, the moving range of the connecting shaft 28 is 0-180 degrees, different display frames can be flexibly selected to be used for arranging and displaying buildings according to needs, the application range of the equipment is enlarged, the display effect is improved, and the operation is simple and the use is convenient.

Furthermore, the second display rack 29 forms a clamping structure through the buckle 31 and the connecting groove 33, and the second display rack 29 and the connecting groove 33 are arranged in parallel, so that the second display rack 29 of the equipment can be opened and the use stability of the equipment can be guaranteed.

In the invention, as shown in fig. 1-3, a winding shaft 6 in the control device is operated to rotate to drive the connecting band 5 at the outer side to be wound and unwound, so that a first slide bar 4 at the end can smoothly reciprocate in a slide rail 3, and a first spring 7 arranged at the other end can ensure that the first slide bar 4 can move reversely when the winding shaft 6 releases the connecting band 5, so that the device can reciprocate to adjust the rising and falling of an upper projection plate 11, when the first slide bar 4 at the bottom slides and adjusts, a slide block 9 at the top can synchronously slide along a slide groove 10, the top projection plate 11 can be effectively driven and controlled through the sliding position adjustment of the first slide bar 4, so that the angle of the projection plate 11 can be adjusted according to the projection space on a lower projection table 2, and the holographic projection of a building can be effectively performed by the device, people can feel and visit more intuitively;

according to the drawings of fig. 1, 4, 5 and 6, the lifting frame 13 of the equipment is lifted along with the operation of the hydraulic rod 12 on the side of the equipment, and at the moment, the projection frame 17 on the side of the equipment is lifted and lowered to adjust the projection height according to the requirement when the equipment is used, so that the projection height can be adjusted according to the requirement by matching with a pure-color sand table below, the projection height can be adjusted flexibly and adapted to the requirements of different projections, and the display effect of the equipment can be more flexible and richer; then, the slide base 21 is installed through an opening at the end part of the adjusting rail 20 and slides into the adjusting rail 20, so that the slide base 21 can slide in the adjusting rail 20 to adjust the use position, a display model is arranged above the slide base 21, plain building models on the first display rack 19 are disassembled, assembled and adjusted as required, equipment can be arranged and installed and adjusted with specific building models as required, direct and visual display products are directly displayed by matching with top projection, when the slide base 21 slides to a proper position, the slide base 21 can be directly pushed into the positioning groove 25 at the side, and positioning is carried out through the extension and contraction of the elastic buckle 24 and the third spring 23, so that the display model can be flexibly adjusted and fixed at the proper position, and the disassembly, the assembly and the disassembly are convenient and the movement are;

according to fig. 1, 5 and 7, the second display rack 29 below can be pulled outwards along the second sliding rod 26 through the sliding cylinder 27, and the second display rack 29 is adjusted to rotate through the connecting shaft 28, so that the second display rack 29 which is inverted is flattened in a rotating manner and erected on the top of the first display rack 19, the second display rack 29 can be conveniently stored and opened, so that different display racks required for displaying can be replaced, the space occupation is reduced, after the second display rack 29 is opened, the second display rack 29 is pushed inwards to enable the buckle 31 at the end part of the second display rack 29 to be aligned and meshed with the connecting groove 33 above the fixed groove 18, the internal rubber piece 32 can be effectively fixedly meshed, the opening operation of the second display rack 29 of the equipment is completed, the use stability of the equipment is ensured, the guide rail arranged above the second display rack 29 is an annular rail in the same form as that on the first display rack 19, different showing shelves can be flexibly selected as required to carry out the arrangement and the showing of the building, so that the application range of the equipment is increased, the showing effect is improved, and the operation is simple and the use is convenient.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an intelligent building demonstrates uses 3D projection arrangement with adjustable sand table, includes base (1), projection board (11) and first show shelf (19), its characterized in that, the top of base (1) is provided with projection platform (2), and the avris of projection platform (2) is provided with slide rail (3), and the inside of slide rail (3) is provided with first slide bar (4), the avris of first slide bar (4) is provided with connecting band (5), and the tip of connecting band (5) is provided with wind-up shaft (6), the opposite side of first slide bar (4) is provided with first spring (7), the tip of first slide bar (4) is provided with pivot (8), and the outside of pivot (8) is provided with slider (9), and the avris of slider (9) is connected with spout (10), projection board (11) are installed in the avris of spout (10), and be fixed connection between spout (10) and projection board (11), hydraulic stem (12) set up in the avris of base (1), and the end connection of hydraulic stem (12) has crane (13), the avris of crane (13) is provided with elevator (14), and the inside of elevator (14) runs through has dead lever (15), the bottom of elevator (14) is provided with second spring (16), the avris of elevator (14) is provided with projection frame (17).

2. The 3D projection device with the adjustable sand table for the intelligent building display is characterized in that a fixing groove (18) is formed below the projection frame (17), the first display frame (19) is installed at the top of the fixing groove (18), an adjusting rail (20) is arranged at the top of the first display frame (19), a sliding seat (21) is arranged inside the adjusting rail (20), a pulley (22) is connected to the end of the sliding seat (21), a third spring (23) is arranged on the side of the adjusting rail (20), a snap fastener (24) is arranged at the end of the third spring (23), a positioning groove (25) is reserved on the side of the adjusting rail (20), a second sliding rod (26) is fixed on the side of the first display frame (19), a sliding barrel (27) penetrates through the outer side of the second sliding rod (26), and a connecting shaft (28) is arranged on the side of the sliding barrel (27), the outside of connecting axle (28) is provided with second show shelf (29), and the outside of second show shelf (29) is provided with spacing rail (30), the avris of spacing rail (30) is provided with buckle (31), and the outside of buckle (31) is provided with rubber spare (32), the avris of first show shelf (19) is provided with spread groove (33).

3. The intelligent building exhibition 3D projection apparatus with adjustable sand table as claimed in claim 1, wherein the first sliding rod (4) and the sliding rail (3) form a sliding structure through the connecting belt (5), the first sliding rod (4) and the winding shaft (6) form a transmission structure through the connecting belt (5), and the center line of the connecting belt (5) and the center line of the first spring (7) coincide with each other.

4. The intelligent building 3D projection device with the adjustable sand table as claimed in claim 1, wherein the sliding block (9) and the first sliding rod (4) form a rotating structure through the rotating shaft (8), and the sliding block (9) and the sliding groove (10) are arranged in parallel.

5. The intelligent building 3D projection device with the adjustable sand table as claimed in claim 1, wherein the lifting block (14) and the fixing rod (15) form a lifting structure through a second spring (16), and the fixing rod (15) and the lifting frame (13) are perpendicular to each other.

6. The 3D projection device with the adjustable sand table for intelligent building exhibition as claimed in claim 2, wherein the sliding base (21) and the adjusting rail (20) form a sliding structure through the pulley (22), and the sliding base (21) and the pulley (22) are arranged perpendicular to each other.

7. The intelligent building 3D projection device with the adjustable sand table as claimed in claim 2, wherein the elastic buckle (24) forms a lifting structure with the adjusting rail (20) through a third spring (23), and the elastic buckle (24) is symmetrically arranged about the central axis of the positioning groove (25).

8. The 3D projection device with the adjustable sand table for intelligent building exhibition as claimed in claim 2, wherein the second exhibition frame (29) forms a rotation structure with the sliding cylinder (27) through the connecting shaft (28), the second exhibition frame (29) forms a sliding structure with the sliding cylinder (27) and the second sliding rod (26), and the movable range of the connecting shaft (28) is 0-180 °.

9. The 3D projection device with the adjustable sand table for intelligent building display as claimed in claim 2, wherein the second display rack (29) is clamped with the connecting groove (33) through a clamping structure formed between a clamping buckle (31), and the second display rack (29) and the connecting groove (33) are arranged in parallel.

10. The 3D projection device with adjustable sand table for intelligent building exhibition as claimed in claim 1, characterized by comprising the following steps:

s1, the winding shaft (6) in the equipment is operated and controlled to rotate, so that the winding shaft drives the connecting band (5) on the outer side to be wound and unwound, the first sliding rod (4) at the end part can smoothly reciprocate in the sliding rail (3), and the first spring (7) arranged at the other end can ensure that the first sliding rod (4) can move reversely when the winding shaft (6) releases the connecting band (5), so that the equipment can realize reciprocating motion, so as to conveniently adjust the lifting and falling of the upper projection plate (11), when the first sliding rod (4) at the bottom is adjusted in a sliding way, the sliding block (9) at the top can synchronously slide along the sliding groove (10), the top projection plate (11) can be effectively driven and controlled through the adjustment of the sliding position of the first sliding rod (4), so as to conveniently adjust the angle of the projection plate (11) according to the condition and the projection space on the lower projection table (2), the equipment can effectively perform holographic projection of the building, so that people can feel and visit more intuitively;

s2, a lifting frame (13) of the equipment is lifted along with the operation of a hydraulic rod (12) on the side of the equipment, and at the moment, a projection frame (17) on the side of the equipment can be lifted and lowered to adjust the projection height according to the requirement when the equipment is used, so that the projection height can be adjusted as required, and the lower pure-color sand table is matched, so that the projection requirements can be flexibly adjusted and adapted, and the display effect of the equipment can be more flexible and richer;

s3, the sliding seat (21) is installed through an opening at the end part of the adjusting rail (20) and slides into the adjusting rail (20), the sliding seat (21) can slide in the adjusting rail (20) to adjust the use position, a display model is arranged above the sliding seat (21), plain building models on the first display rack (19) are disassembled, assembled and adjusted as required, equipment can be arranged and installed and adjusted with specific building models as required, direct and visual display products are directly displayed by matching with top projection, when the sliding seat (21) slides to a proper position, the sliding seat (21) can be directly pushed into the positioning groove (25) at the side, and positioning is carried out through the extension and retraction of the elastic buckle (24) and the third spring (23), so that the display model can be flexibly adjusted and fixed at the proper position, and the disassembly, the assembly and the assembly are convenient and the movement are flexible;

s4, the second display rack (29) below can be pulled outwards along the second sliding rod (26) through the sliding barrel (27), the second display rack (29) is adjusted in a rotating mode through the connecting shaft (28), the inverted second display rack (29) is enabled to be flattened in a rotating mode and is erected on the top of the first display rack (19), the second display rack (29) can be conveniently stored and opened, different display racks required by display can be replaced, space occupation is reduced, after the second display rack (29) is opened, the second display rack (29) is pushed inwards to enable the buckle (31) at the end portion of the second display rack to be aligned and meshed with the connecting groove (33) above the fixing groove (18), the internal rubber piece (32) can be effectively fixed and meshed, opening operation of the second display rack (29) of the device is achieved, meanwhile, use stability of the device is guaranteed, the guide rail arranged above the second display rack (29) is an annular rail in the same form as that of the first display rack (19), different showing shelves can be flexibly selected as required to carry out the arrangement and the showing of the building, so that the application range of the equipment is increased, the showing effect is improved, and the operation is simple and the use is convenient.