A digital sand table with a lifting structure

Abstract

This invention discloses a digital sand table with a lifting structure, belonging to the technical field of digital sand table devices. It includes a base plate, a pedestal, a lifting platform, an underground physical model, a ground physical model, a lifting mechanism, and a buffer mechanism. By setting up the lifting and buffer mechanisms, an air pump operates, drawing air from above the moving plate into the area below it through a vent pipe. The increased airflow below the moving plate causes the lifting platform to move upwards. The moving plate moves and compresses an air bladder. The air inside the air bladder enters the interior of a fixed column through an air inlet pipe. The air then passes through a groove in a sliding plate and a second fixed plate, entering the area below the second fixed plate. The gas compresses an expansion membrane to both ends of a protruding sealing box and engages with the inner wall of the sliding groove of the moving plate. This structure facilitates buffering the moving plate after movement, making the lifting platform stop more smoothly. The lifting of the platform allows for multi-view displays of the digital sand table.

Description

Technical Field

[0001] This invention relates to the field of digital sand table devices, specifically a digital sand table with a lifting structure. Background Technology

[0002] Digital sand tables are a revolutionary innovation. Based on traditional solid sand tables, they incorporate various multimedia sound and light technologies, primarily dynamic projection, breaking people's monotonous and rigid impressions of sand tables. In urban planning museums, the sand table is indispensable. The sand table is a miniature of a city, providing visitors with a bird's-eye view of the city and a comprehensive overview. However, traditional sand table models can only represent a city in one time dimension, which is far from sufficient for urban planning spanning several years or even decades. Digital sand tables can dynamically display the entire picture of a city, jumping and changing across different time dimensions, making them the best tool for explaining urban planning.

[0003] Currently, most digital sand table displays are fixed on a support base, which is generally at a fixed height. This means that guides and visitors can only view the surface building model from above, and can only view the underground building model from above. This not only affects the guides' ability to explain and operate the digital sand table from multiple perspectives, but also prevents visitors from clearly judging and understanding the buildings displayed on the digital sand table, thus reducing the effectiveness of using the digital sand table. Summary of the Invention

[0004] The purpose of this invention is to provide a digital sand table with a lifting structure in order to solve the problem that the fixed height of the digital sand table affects the display effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a digital sand table with a lifting structure, comprising a base plate, a base fixed to the top of the base plate by bolts, a lifting platform sleeved inside the base plate at the top of the base plate, an underground physical model fixed to the top of the lifting platform by adhesive, a ground physical model fixed to the top of the underground physical model by adhesive, and a lifting mechanism extending into the base plate at the bottom of the outer wall of the lifting platform;

[0006] The lifting mechanism includes a fixed column fixed inside the base. A movable plate, which is fixedly connected to the bottom of the outer wall of the lifting platform, is sleeved on the outer wall of the fixed column. An air pump is installed inside the fixed column. Connecting pipes are installed at the top and bottom of the air pump. A sealing box, which is fixed to the inner wall of the fixed column, is installed at the top of the connecting pipe. A first piston is slidably connected inside the sealing box. A movable rod is installed at the top of the first piston. A first fixed plate, which is fixedly connected to the inner wall of the fixed column, is sleeved on the outer wall of the movable rod. A first spring, located at the bottom of the first fixed plate, is sleeved on the outer wall of the movable rod. An airbag is installed at the top and bottom of the inner wall of the base. A connecting conduit extending into the airbag is sleeved at one end of the sealing box. A second fixed plate, which is fixedly connected to the inner wall of the fixed column, is installed at the top of the sealing box. A vent pipe extending into the fixed column is installed on one side of the fixed column. A buffer mechanism extending into one end of the airbag is installed at the top of the second fixed plate for buffering the moving movable plate.

[0007] As a further embodiment of the present invention: the contact portion between the movable plate and the fixed column, the contact position between the base and the lifting platform, and the contact position between the outer wall of the movable plate and the base are all provided with sealing elements, and the movable rod and the second fixed plate are slidably connected.

[0008] As a further embodiment of the present invention: a sealing element is provided at the connection between the connecting pipe and the fixing column, and multiple through grooves for gas to pass through are provided inside the first fixing plate and the second fixing plate, and the through grooves are evenly distributed on the outer walls of the first fixing plate and the second fixing plate.

[0009] As a further embodiment of the present invention: a sealing element is provided at the connection between the connecting conduit and the sealing box, a sealing element is provided at the connection between the connecting conduit and the fixing column, and a sealing element is provided at the connection between the connecting conduit and the airbag.

[0010] As a further embodiment of the present invention: two fixed columns are provided and symmetrically distributed at both ends of the lifting platform; two ventilation pipes are provided and located at the top and bottom of one side of the fixed column, respectively; and two air pumps are provided and respectively located inside the two fixed columns.

[0011] As a further embodiment of the present invention: the buffer mechanism includes an air inlet pipe disposed at one end of the airbag and extending into the interior of the fixed column, a second piston disposed at the bottom end of the air inlet pipe, the bottom end of the second piston being fixedly connected to a moving rod, a sliding plate being fixedly sleeved on the outer wall of the moving rod, and a first one-way valve disposed at one end of the fixed column.

[0012] As a further embodiment of the present invention: the buffer mechanism further includes a second spring fixedly connected to the bottom end of the sliding plate and sleeved on the outer wall of the moving rod, the outer wall of the fixed column is provided with an expansion membrane, and a second one-way valve is provided on one side of the airbag.

[0013] As a further embodiment of the present invention: the sliding plate is slidably connected to the inner wall of the sealing box through a limiting slider, and the interior of the sliding plate is provided with a plurality of evenly distributed through grooves.

[0014] As a further embodiment of the present invention: multiple expansion films are provided, and they are evenly distributed at both ends of the sealing box, and located at the upper and lower ends of the sealing box.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By incorporating a lifting and buffering mechanism, the air pump operates, drawing air from above the moving platform into the area below it through a ventilation pipe. This increased airflow below the moving platform causes it to move upwards. This structure facilitates lifting operations. As the moving platform moves, it compresses the airbag, allowing the air inside to enter the fixed column through the air inlet pipe. The air then passes through the slots of the sliding plate and the second fixed plate, entering the area below the second fixed plate. The air compresses the expansion membrane to both ends of the protruding sealing box and engages with the inner wall of the sliding groove of the moving platform. This structure provides a buffering effect after the moving platform has moved, ensuring a more stable stop for both the ground and underground models at the top of the lifting platform. The lifting and lowering of the platform enables multi-view displays of the digital sand table. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is an exploded view of the structure of the present invention;

[0019] Figure 3 This is a cross-sectional schematic diagram of the base structure of the present invention;

[0020] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the diagram;

[0021] Figure 5 This is a cross-sectional view of the structure above the second fixing plate of the present invention;

[0022] Figure 6 This is a cross-sectional schematic diagram of the fixed column structure of the present invention.

[0023] In the diagram: 1. Base plate; 2. Base; 3. Underground physical model; 4. Ground physical model; 5. Lifting platform; 6. Lifting mechanism; 601. Moving plate; 602. Fixed column; 603. Air pump; 604. Connecting pipe; 605. Sealing box; 606. First piston; 607. Moving rod; 608. First spring; 609. First fixed plate; 610. Connecting conduit; 611. Second fixed plate; 612. Airbag; 613. Ventilation pipe; 7. Buffer mechanism; 701. Air inlet pipe; 702. Second piston; 703. Sliding plate; 704. First one-way valve; 705. Second spring; 706. Expansion diaphragm; 707. Second one-way valve. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art of digital sand table devices without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art of this digital sand table device can understand the specific meaning of the above terms in this invention according to the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0026] Please see Figures 1-6In this embodiment of the invention, a digital sand table with a lifting structure includes a base plate 1, a base 2 fixed to the top of the base plate 1 by bolts, a lifting platform 5 sleeved inside the base 2 at the top of the base 2, an underground physical model 3 fixed to the top of the lifting platform 5 by adhesive, a ground physical model 4 fixed to the top of the underground physical model 3 by adhesive, and a lifting mechanism 6 extending into the base 2 at the bottom of the outer wall of the lifting platform 5.

[0027] The lifting mechanism 6 includes a fixed column 602 fixed inside the base 2. A movable plate 601, which is fixedly connected to the bottom of the outer wall of the lifting platform 5, is sleeved on the outer wall of the fixed column 602. An air pump 603 is installed inside the fixed column 602. A connecting pipe 604 is installed at the top and bottom of the air pump 603. A sealing box 605, which is fixed to the inner wall of the fixed column 602, is installed at the top of the connecting pipe 604. A first piston 606 is slidably connected inside the sealing box 605. A movable rod 607 is installed at the top of the first piston 606. A first fixed plate 609, which is fixedly connected to the inner wall of the fixed column 602, is sleeved on the outer wall of the movable rod 607. The outer wall of the moving rod 607 is fitted with a first spring 608 located at the bottom of the first fixed plate 609. The top and bottom of the inner wall of the base 2 are provided with airbags 612. One end of the sealing box 605 is fitted with a connecting conduit 610 extending into the airbag 612. The top of the sealing box 605 is provided with a second fixed plate 611 fixedly connected to the inner wall of the fixed column 602. One side of the fixed column 602 is provided with a vent pipe 613 extending into the fixed column 602. The top of the second fixed plate 611 is provided with a buffer mechanism 7 extending to one end of the airbag 612, which is used to buffer the moving plate 601.

[0028] In this embodiment: an electrically conductive glass is installed between the ground physical model 4 and the underground physical model 3. When the electrically conductive glass is not powered, it is opaque, thus separating the ground physical model 4 and the underground physical model 3 into two spaces, allowing visitors to focus more intently on viewing the ground physical model 4. When the electrically conductive glass is powered, it becomes transparent, allowing visitors to look down at the underground physical model 3 and gain a direct understanding of its overall structure. An OLED transparent screen is also installed on the side of the underground physical model 3, which further enhances the structural advantages of the underground physical model 3 through its image content. The lifting mechanism 6 facilitates the raising and lowering of the lifting platform 5, thereby adjusting the positions of the underground physical model 3 and the ground physical model 4, and enabling guides to provide multi-angle explanations of the entire structure. The buffer mechanism 7 buffers the movement of the moving plate 601, ensuring a smoother stop for the ground physical model 4 and the underground physical model 3 at the top of the lifting platform 5.

[0029] Please refer to this carefully. Figures 2-6 Sealing elements are provided at the contact points between the movable plate 601 and the fixed column 602, the contact points between the base 2 and the lifting platform 5, and the contact points between the outer wall of the movable plate 601 and the base 2. The movable rod 607 and the second fixed plate 611 are slidably sleeved. A sealing element is provided at the connection between the connecting pipe 604 and the fixed column 602. Multiple gas passages are provided inside the first fixed plate 609 and the second fixed plate 611, and the passages are evenly distributed on the outer walls of the first fixed plate 609 and the second fixed plate 611. A seal is provided at the connection between the connecting conduit 610 and the sealing box 605, and a seal is provided at the connection between the connecting conduit 610 and the fixed column 602, and a seal is provided at the connection between the connecting conduit 610 and the airbag 612; there are two fixed columns 602, which are symmetrically distributed at both ends of the lifting platform 5; there are two ventilation pipes 613, which are located at the top and bottom of one side of the fixed column 602, respectively; there are two air pumps 603, which are respectively installed inside the two fixed columns 602.

[0030] In this embodiment: When the lifting platform 5 needs to be raised, the air pump 603 operates, drawing gas from above the moving plate 601 through the vent pipe 613 at the top of one side of the fixed column 602 and into the area below the moving plate 601 via the connecting pipe 604. The increased air volume below the moving plate 601 causes it to move upwards, which in turn moves the lifting platform 5 upwards. When the moving plate 601 is in contact with the bottom of the airbag 612, it moves and compresses the airbag 612. This structure facilitates the lifting operation of the lifting platform 5. When the lifting platform 5 needs to be lowered, another air pump 603 operates, and the connecting pipe 604 delivers gas from below the moving plate 601 into the interior of the sealed box 605. The gas entering the sealed box 605 compresses the first piston 606, causing it to move. The movement of the first piston 606 drives the moving rod 607 to move upward, compressing the first spring 608. The movement of the moving rod 607 then drives the sliding plate 703 to move upward. The sliding plate 703 moves to above the first one-way valve 704, thus releasing the blockage of the first one-way valve 704. At this time, the gas inside the fixed column 602 enters above the moving plate 601 through the first one-way valve 704. Simultaneously, the gas in the sealed box 605 enters the airbag 612 through the connecting conduit 610. The gas entering the airbag 612 is then sent into the space above the moving plate 601 through the second one-way valve 707. This structure facilitates the lowering operation of the lifting platform 5.

[0031] Please refer to this carefully. Figures 2-6The buffer mechanism 7 includes an air inlet pipe 701 disposed at one end of the airbag 612 and extending into the interior of the fixed post 602. A second piston 702 is disposed at the bottom end of the air inlet pipe 701. The bottom end of the second piston 702 is fixedly connected to the moving rod 607. A sliding plate 703 is fixedly sleeved on the outer wall of the moving rod 607. A first one-way valve 704 is disposed at one end of the fixed post 602. The buffer mechanism 7 also includes a second spring 705 fixedly connected to the bottom end of the sliding plate 703 and sleeved on the outer wall of the moving rod 607. An expansion membrane 706 is disposed on the outer wall of the fixed post 602. A second one-way valve 707 is disposed on one side of the airbag 612. The sliding plate 703 is slidably connected to the inner wall of the sealing box 605 through a limiting slider. Multiple evenly distributed through grooves are disposed inside the sliding plate 703. Multiple expansion membranes 706 are disposed and evenly distributed at both ends of the sealing box 605, and located at the upper and lower ends of the sealing box 605.

[0032] In this embodiment: The airbag 612 initially contains a certain amount of gas. When the moving plate 601 compresses the airbag 612, the gas inside the airbag 612 enters the interior of the fixed column 602 through the air inlet pipe 701. Simultaneously, the gas in the airbag 612 also enters the sealing box 605 through the connecting conduit 610. The gas through the air inlet pipe 701 compresses the second piston 702, causing it to move downwards. The movement of the second piston 702 drives the moving rod 607 to move downwards, which in turn drives the sliding plate 703. The sliding plate 703 moves to one end of the first one-way valve 704 and blocks it. The second spring 705 is compressed, and the gas inside the fixed column 602 enters the space below the second fixed plate 611 through the through groove inside the sliding plate 703 and the second fixed plate 611. The moving plate 601 continues to compress the airbag 612, that is, the gas below the second fixed plate 611 increases, and the expansion membrane 706 is deformed, causing the expansion membrane 706 to protrude from the sealing box 6. The two ends of 05 are attached to the inner wall of the sliding groove of the moving plate 601, which increases the moving friction of the moving plate 601 and then performs a secondary buffering operation on the moving plate 601, thereby ensuring that the ground model 4 and the underground model 3 at the top of the lifting platform 5 are more stable when they stop. When the lifting platform 5 starts to lift, the air pump 603 works to deliver gas to the inside of the sealing box 605 through the connecting pipe 604 and squeeze the first piston 606 to move. The movement of the first piston 606 drives the moving rod 607 to move upward. The first spring 608 is squeezed by force. The movement of the moving rod 607 drives the sliding plate 703 to move upward. The sliding plate 703 moves to the top of the first one-way valve 704, which releases the blockage of the first one-way valve 704. At this time, the high pressure gas inside the fixed column 602 is discharged through the first one-way valve 704, thereby causing the expansion membranes 706 attached to the moving plate 601 to reset and contract. The expansion membranes 706 separate from the moving plate 601, thereby making the moving plate 601 easier to lift and move.

[0033] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art of digital sand table devices within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A digital sand table with a lifting structure, comprising a base plate (1), the top of the base plate (1) being fixed to a base (2) by bolts, the top of the base (2) being provided with a lifting platform (5) sleeved inside the base (2), the top of the lifting platform (5) being fixed to an underground physical model (3) by adhesive, and the top of the underground physical model (3) being fixed to a ground physical model (4) by adhesive, characterized in that, The bottom of the outer wall of the lifting platform (5) is provided with a lifting mechanism (6) that extends into the base (2). The lifting mechanism (6) includes a fixed column (602) fixed inside the base (2). The outer wall of the fixed column (602) is fitted with a movable plate (601) fixedly connected to the bottom of the outer wall of the lifting platform (5). An air pump (603) is installed inside the fixed column (602). A connecting pipe (604) is installed at the top and bottom of the air pump (603). A sealing box (605) fixed to the inner wall of the fixed column (602) is installed at the top of the connecting pipe (604). A first piston (606) is slidably connected inside the sealing box (605). A movable rod (607) is installed at the top of the first piston (606). The outer wall of the movable rod (607) is fitted with a first fixed plate fixedly connected to the inner wall of the fixed column (602). 609), the outer wall of the moving rod (607) is sleeved with a first spring (608) located at the bottom end of the first fixed plate (609), the top and bottom ends of the inner wall of the base (2) are provided with airbags (612), one end of the sealing box (605) is sleeved with a connecting conduit (610) extending into the airbag (612), the top end of the sealing box (605) is provided with a second fixed plate (611) fixedly connected to the inner wall of the fixed column (602), one side of the fixed column (602) is provided with a vent pipe (613) extending into the fixed column (602), the top end of the second fixed plate (611) is provided with a buffer mechanism (7) extending into one end of the airbag (612), which is used to buffer the moving moving plate (601); The buffer mechanism (7) includes an air inlet pipe (701) disposed at one end of the airbag (612) and extending into the fixed post (602). A second piston (702) is disposed at the bottom end of the air inlet pipe (701). The bottom end of the second piston (702) is fixedly connected to the moving rod (607). A sliding plate (703) is fixedly sleeved on the outer wall of the moving rod (607). A first one-way valve (704) is disposed at one end of the fixed post (602). The buffer mechanism (7) further includes a second spring (705) fixedly connected to the bottom end of the sliding plate (703) and sleeved on the outer wall of the moving rod (607), an expansion membrane (706) is provided on the outer wall of the fixed column (602), and a second one-way valve (707) is provided on one side of the airbag (612). The sliding plate (703) is slidably connected to the inner wall of the sealing box (605) through a limiting slider, and the interior of the sliding plate (703) is provided with a plurality of evenly distributed through grooves. Multiple expansion films (706) are provided and are distributed at both ends of the sealing box (605), and are located at the upper and lower ends of the sealing box (605).

2. A digital sand table with a lifting structure according to claim 1, characterized in that, Sealing elements are provided at the contact parts of the movable plate (601) and the fixed column (602), the contact position of the base (2) and the lifting platform (5), and the contact position of the outer wall of the movable plate (601) and the base (2). The movable rod (607) and the second fixed plate (611) are slidably connected.

3. A digital sand table with a lifting structure according to claim 1, characterized in that, A sealing element is provided at the connection between the connecting pipe (604) and the fixing column (602). The first fixing plate (609) and the second fixing plate (611) are provided with multiple through grooves for gas to pass through. The through grooves are evenly distributed on the outer walls of the first fixing plate (609) and the second fixing plate (611).

4. A digital sand table with a lifting structure according to claim 1, characterized in that, A sealing element is provided at the connection between the connecting conduit (610) and the sealing box (605), and a sealing element is provided at the connection between the connecting conduit (610) and the fixing column (602), and a sealing element is provided at the connection between the connecting conduit (610) and the airbag (612).

5. A digital sand table with a lifting structure according to claim 1, characterized in that, Two fixed columns (602) are provided and symmetrically distributed at both ends of the lifting platform (5). Two ventilation pipes (613) are provided and located at the top and bottom of one side of the fixed column (602) respectively. Two air pumps (603) are provided and are respectively located inside the two fixed columns (602).

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