Simulation sand table for land planning and use method thereof

Abstract

The invention discloses a simulation sand table for land planning and a use method thereof.The simulation sand table comprises two stand column assemblies, a driving mechanism, a first display mechanism and a second display mechanism, the two stand column assemblies are arranged oppositely, and each stand column assembly comprises a hollow stand column, a driving lead screw, a lead screw nut, a sliding rail, a fixing plate and a connecting column; the driving lead screw vertically penetrates through the hollow stand column and is rotationally connected with the hollow stand column. The lead screw nut is arranged in the hollow stand column and is in threaded connection with the driving lead screw. The sand table model display device has the advantages that the stand column assembly, the driving mechanism and the second display mechanism are arranged to be matched, the sand table model can be horizontally displayed, the sand table model can be vertically displayed, and the second display mechanism and the stand column assembly are arranged to be matched, so that the device can display a planning scheme through the sand table model; and the plane planning scheme can be displayed through the display curtain.

Description

Technical Field

[0001] The present invention relates to the technical field of sand tables, and in particular to a simulated sand table for land planning and a use method thereof. Background Art

[0002] The land planning sand table is a three-dimensional model used to display and simulate land use planning. Through the land planning sand table, the audience can understand the planning scheme more intuitively, which helps the audience better understand the planning design principles and spatial layout relationships.

[0003] At present, there are two types of land planning sand tables: flat display type and wall-mounted display type. The flat display method is conducive to the audience observing the sand table from multiple angles, while the wall-mounted display method is conducive to the audience observing the sand table from the whole perspective. Both have their own advantages and disadvantages, but usually the flat sand table can only be displayed flat, and the wall-mounted sand table can only be displayed on the wall, which lacks variability and is difficult to take into account the coordination between the sand table model and the display needs. Therefore, a simulation sand table for land planning and a method of using the same are proposed. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] The present invention has been proposed in view of the above-mentioned problems.

[0006] Therefore, the purpose of the present invention is to provide a simulation sand table for land planning and a method of using the same, which is used to solve the problem that traditional sand table models lack variability and it is difficult to balance the coordination between the sand table models and display needs.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a simulation sand table for land planning, comprising:

[0008] The support rail is vertically arranged in the hollow column and is fixedly connected to the inner wall of the hollow column away from the other group of column assemblies. The support rail is vertically arranged in the hollow column and is fixedly connected to the inner wall of the hollow column on one side away from the other group of column assemblies. The support rail is slidably connected to the slide rail. A first slide groove and a second slide groove are vertically provided on a side of the hollow column facing the other group of column assemblies. The first slide groove is located opposite to the screw nut. A protrusion passing through the first slide groove is provided on a side of the screw nut close to the first slide groove. The fixing plate is fixedly connected to a side of the protrusion away from the screw nut, and the connecting column is fixedly connected to a side of the fixing plate facing away from the screw nut.

[0009] A driving mechanism, which is fixedly connected to the top of the two sets of hollow columns and is used to drive the two sets of driving screws to rotate;

[0010] The first display mechanism comprises a linkage assembly, a first fixed rod, a second fixed rod, a roller and a display curtain, the linkage assembly is provided with two groups, the two groups of linkage assemblies are respectively mounted on the inner sides of the two groups of hollow columns, and include a mounting seat, a pulley, a belt and a sliding block, the mounting seat and the pulley are provided with two groups, the two groups of mounting seats are fixedly connected to the inner wall of the hollow column, the two groups of pulleys are rotatably connected to the two groups of mounting seats, the belt sleeves are arranged on the outer sides of the two groups of pulleys, the sliding block is slidably connected to the hollow column through the second sliding groove, the belt bodies on both sides of the belt are respectively fixedly connected to the sliding block and the screw nut, the first fixed rod is horizontally arranged and the two ends are respectively fixedly connected to the two groups of sliding blocks, the second fixed rod is horizontally arranged and the two ends are respectively fixedly connected to the two groups of fixed plates, the roller is horizontally arranged between the two groups of hollow columns and the two ends are respectively rotatably connected to the two groups of hollow columns, one end of the display curtain is fixedly connected to the second fixed rod, and the other end is fixedly connected to the first fixed rod after passing around the roller;

[0011] The second display mechanism includes a C-shaped guide rail, a model table, a mounting plate and track wheels. The C-shaped guide rail, the mounting plate and the track wheels are each provided with two groups. The two groups of the C-shaped guide rails are arranged between the two groups of hollow columns. The two groups of the C-shaped guide rails are respectively fixedly connected to the two groups of hollow columns. The model table is arranged above the two groups of C-shaped guide rails. The two groups of the connecting columns are respectively rotatably connected to the two sides of the model table. The two groups of the mounting plates are respectively fixedly connected to the two sides of the bottom of the model table. The two groups of the track wheels are respectively rotatably connected to the two groups of the mounting plates. The two groups of the track wheels are respectively slidably connected to the two groups of the C-shaped guide rails.

[0012] As a preferred solution of a simulation sand table for land planning described in the present invention, the driving mechanism comprises a hollow connecting column, a driving motor, a first bevel gear, a bearing seat, a rotating rod and a second bevel gear, the hollow connecting column is fixedly connected to the top of two groups of hollow columns, the driving motor is fixedly connected to the top of the hollow column and is located opposite to one of the driving screws, the two groups of driving screws both pass through the hollow connecting column and are rotatably connected to the hollow connecting column, the driving motor shaft passes through the hollow connecting column and is rotatably connected to the hollow connecting column, the end of the driving motor shaft is fixedly connected to the adjacent driving screw, the first bevel gear, the bearing seat and the second bevel gear are arranged in two groups in the hollow connecting column, the two groups of the first bevel gears are respectively fixedly connected to the two groups of driving screws, the two groups of the bearing seats are fixedly connected to the inner wall of the hollow connecting column and are located opposite to each other, the rotating rod is rotatably connected to the two groups of bearing seats and passes through the two groups of bearing seats, the two groups of the second bevel gears are respectively fixedly connected to the two ends of the rotating rod, and the two groups of the second bevel gears are respectively meshed with the two groups of the first bevel gears.

[0013] As a preferred solution of the simulated sand table for land planning described in the present invention, the first display mechanism also includes a brush plate, which is fixedly connected to the bottom of the hollow connecting column, the brush plate is located opposite to the rotating roller, and the bottom of the brush plate has bristles that are long enough to touch the display curtain.

[0014] As a preferred solution of the simulation sand table for land planning described in the present invention, the transmission ratio of the second bevel gear to the first bevel gear is 1:1, the two groups of the first bevel gears are respectively arranged to coincide with the axes of the two groups of driving screws, and the two groups of the second bevel gears are both arranged to coincide with the axes of the rotating rod.

[0015] As a preferred solution of the simulated sand table for land planning described in the present invention, the hollow connecting column and the two groups of hollow columns are both made of stainless steel, and the surfaces of the hollow connecting column and the two groups of hollow columns are also coated with anti-corrosion coatings.

[0016] As a preferred solution of the simulation sand table for land planning described in the present invention, two groups of rib plates are arranged between the two groups of C-shaped guide rails and adjacent hollow columns, and the two sides of each group of rib plates are fixedly connected to the adjacent C-shaped guide rails and hollow columns respectively.

[0017] As a preferred solution of the simulation sand table for land planning described in the present invention, a sliding groove matching with the sliding rail is opened on the side of the lead screw nut close to the sliding rail, and the lead screw nut is slidably connected with the sliding rail through the sliding groove.

[0018] As a preferred solution of the simulation sand table for land planning described in the present invention, the height of the C-shaped guide rail is greater than the distance from the side of the model table away from the hollow column to the mounting plate in a horizontal state, and the length of the first slide groove is greater than the length of the model table.

[0019] As a preferred solution of the simulated sand table for land planning described in the present invention, when the lead screw nut moves to the middle position on one side of the belt, the sliding block just moves to the middle position on the other side of the belt.

[0020] Based on the above-mentioned land planning simulation sand table, the present invention additionally provides a method for using the land planning simulation sand table, which specifically includes the following steps:

[0021] S1, fixing the land planning model on the top of the model table, and printing the plan view of the model on the surface of the display curtain;

[0022] S2, the driving motor drives the corresponding driving screw to rotate. When the driving screw rotates, the screw nut is driven to move upward or downward along the slide rail according to the rotation direction. At the same time, the screw nut drives the corresponding first bevel gear to rotate. Under the transmission of the rotating rod, the two sets of second bevel gears and the other set of first bevel gears, the two sets of driving screws rotate synchronously, and then the two sets of screw nuts move synchronously. When the two sets of screw nuts move, they respectively drive the two sets of fixed plates to move. When the two sets of fixed plates move, they drive the model stage to rotate, and then the model stage can be adjusted to a horizontal or vertical state. When the two sets of screw nuts move, they also drive the two sets of belts to rotate. When the two sets of belts rotate, they respectively drive the two sets of sliding blocks to slide along the corresponding second sliding grooves. The two sets of sliding blocks have the same moving speed as the two sets of screw nuts but move in opposite directions. The two sets of sliding blocks pull the display curtain through the first fixed rod. When the model stage is horizontal, the surface of the display curtain faces the side where the model stage is located. When the model stage is vertical, the surface of the display curtain faces away from the model stage.

[0023] S3, when it is necessary to observe the sand table model from multiple angles, adjust the model table to a horizontal state, then the model can be observed from multiple angles, and the global plane information of the model can be obtained through the display curtain. When it is necessary to observe the model globally, adjust the model table to a vertical state, then a clear global perspective can be obtained, and personnel can also obtain the global information of the model from the back through the display curtain.

[0024] Beneficial effects of the present invention:

[0025] 1. By arranging the column assembly, the driving mechanism and the second display mechanism, the device can display the sand table model horizontally and vertically, and the display method is flexible and changeable, which is conducive to improving the display effect.

[0026] 2. By setting up the second display mechanism in cooperation with the column assembly, the device can display the planning scheme through the sand table model and the plane planning scheme through the display curtain. The combination of the two is conducive to further improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0028] Figure 1 The present invention is a three-dimensional structural schematic diagram of a simulated sand table for land planning.

[0029] Figure 2 This is a schematic diagram of the internal structure of hollow columns and hollow connecting columns of a simulation sand table for land planning according to the present invention.

[0030] Figure 3 For the present invention Figure 2 A magnified view of the structure of area A.

[0031] Figure 4 For the present invention Figure 2 Figure 1. Structural method diagram for region B in the middle.

[0032] Figure 5 This is a partial structural schematic diagram of the first display mechanism of a simulated sand table for land planning according to the present invention.

[0033] Figure 6 This is a schematic diagram of the structure of the lead screw and nut part of a simulation sand table for land planning according to the present invention.

[0034] Figure 7 This is a partial structural schematic diagram of the second display mechanism of a simulated sand table for land planning according to the present invention.

[0035] Figure 8 The present invention is a schematic diagram of the front side three-dimensional structure of a model table of a simulation sand table for land planning in a vertical state.

[0036] Fig. 9 The present invention is a schematic diagram of the rear three-dimensional structure of a model table of a simulated sand table for land planning in a vertical state.

[0037] Description of the drawings: 100, column assembly; 101a, first slide; 101b, second slide; 101, hollow column; 102, driving screw; 103, screw nut; 104, slide rail; 105, fixing plate; 106, connecting column; 200, driving mechanism; 201, hollow connecting column; 202, driving motor; 203, first bevel gear; 204, bearing seat; 205, rotating rod; 206, second bevel gear; 300, first display mechanism; 301, linkage assembly; 3011, mounting seat; 3012, pulley; 3013, belt; 3014, sliding block; 302, first fixed rod; 303, second fixed rod; 304, roller; 305, display curtain; 306, brush plate; 400, second display mechanism; 401, C-type guide rail; 402, model table; 403, mounting plate; 404, track wheel; 405, rib plate. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0042] Example 1

[0043] A simulation sand table for land planning, comprising:

[0044] The column assembly 100 is provided with two groups, and the two groups of column assemblies 100 are arranged opposite to each other, and include a hollow column 101, a driving screw 102, a screw nut 103, a slide rail 104, a fixing plate 105 and a connecting column 106, the driving screw 102 vertically penetrates the hollow column 101 and is rotatably connected with the hollow column 101, the screw nut 103 is arranged in the hollow column 101 and is threadedly connected with the driving screw 102, and the slide rail 104 is vertically arranged in the hollow column 101 and is away from the hollow column 101. One side of the inner wall is fixedly connected, the lead screw nut 103 is slidably connected with the slide rail 104, and a first slide groove 101a and a second slide groove 101b are provided in the vertical direction on a side of the hollow column 101 facing the other group of column assemblies 100, the first slide groove 101a is located facing the lead screw nut 103, and a protrusion passing through the first slide groove 101a is provided on the side of the lead screw nut 103 close to the first slide groove 101a, the fixing plate 105 is fixedly connected to the side of the protrusion away from the lead screw nut 103, and the connecting column 106 is fixedly connected to the side of the fixing plate 105 facing away from the lead screw nut 103;

[0045] The driving mechanism 200 is fixedly connected to the top of the two groups of hollow columns 101, and is used to drive the two groups of driving screws 102 to rotate. The driving mechanism 200 includes a hollow connecting column 201, a driving motor 202, a first bevel gear 203, a bearing seat 204, a rotating rod 205 and a second bevel gear 206. The hollow connecting column 201 is fixedly connected to the top of the two groups of hollow columns 101. The driving motor 202 is fixedly connected to the top of the hollow column 101 and is located opposite to one of the driving screws 102. Both groups of driving screws 102 pass through the hollow connecting column 201 and are rotatably connected to the hollow connecting column 201. The rotating shaft of the driving motor 202 passes through the hollow connecting column 201. And it is rotatably connected with the hollow connecting column 201, the end of the rotating shaft of the driving motor 202 is fixedly connected with the adjacent driving screw 102, and two groups of first bevel gears 203, bearing seats 204 and second bevel gears 206 are arranged in the hollow connecting column 201. The two groups of first bevel gears 203 are respectively fixedly connected with the two groups of driving screws 102, and the two groups of bearing seats 204 are fixedly connected with the inner wall of the hollow connecting column 201 and are arranged in a position facing each other. The rotating rod 205 is rotatably connected with the two groups of bearing seats 204 and passes through the two groups of bearing seats 204. The two groups of second bevel gears 206 are respectively fixedly connected at both ends of the rotating rod 205, and the two groups of second bevel gears 206 are respectively meshed with the two groups of first bevel gears 203. ;

[0046] The first display mechanism 300 includes a linkage assembly 301, a first fixed rod 302, a second fixed rod 303, a roller 304 and a display curtain 305. The linkage assembly 301 is provided with two groups, and the two groups of linkage assemblies 301 are respectively installed on the inner sides of the two groups of hollow columns 101, and include a mounting seat 3011, a pulley 3012, a belt 3013 and a sliding block 3014. The mounting seat 3011 and the pulley 3012 are provided with two groups, and the two groups of mounting seats 3011 are fixedly connected to the inner wall of the hollow column 101, and the two groups of pulleys 3012 are respectively rotatably connected to the two groups of mounting seats 3011. The belt 3013 is sleeved on the two groups of pulleys 30 12 outside, the sliding block 3014 is slidably connected to the hollow column 101 through the second sliding groove 101b, the belt bodies on both sides of the belt 3013 are fixedly connected to the sliding block 3014 and the lead screw nut 103 respectively, the first fixed rod 302 is horizontally arranged and the two ends are respectively fixedly connected to the two groups of sliding blocks 3014, the second fixed rod 303 is horizontally arranged and the two ends are respectively fixedly connected to the two groups of fixed plates 105, the roller 304 is horizontally arranged between the two groups of hollow columns 101 and the two ends are respectively rotatably connected to the two groups of hollow columns 101, one end of the display curtain 305 is fixedly connected to the second fixed rod 303, and the other end is fixedly connected to the first fixed rod 302 after passing the roller 304;

[0047] The second display mechanism 400 includes a C-shaped guide rail 401, a model table 402, a mounting plate 403 and a track wheel 404. The C-shaped guide rail 401, the mounting plate 403 and the track wheel 404 are each provided with two groups. The two groups of C-shaped guide rails 401 are arranged between the two groups of hollow columns 101. The two groups of C-shaped guide rails 401 are respectively fixedly connected to the two groups of hollow columns 101. The model table 402 is arranged above the two groups of C-shaped guide rails 401. The two groups of connecting columns 106 are respectively rotatably connected to the two sides of the model table 402. The two groups of mounting plates 403 are respectively fixedly connected to the two sides of the bottom of the model table 402. The two groups of track wheels 404 are respectively rotatably connected to the two groups of mounting plates 403. The two groups of track wheels 404 are respectively slidably connected to the two groups of C-shaped guide rails 401.

[0048] Among them, the first display mechanism 300 also includes a brush plate 306, which is fixedly connected to the bottom of the hollow connecting column 201, and the brush plate 306 is located opposite to the roller 304. The bottom of the brush plate 306 has bristles that are long enough to touch the display curtain 305. The brush plate 306 is used to clean the display curtain 305 when the device switches the display mode.

[0049] In addition, the transmission ratio of the second bevel gear 206 to the first bevel gear 203 is 1:1, the two sets of first bevel gears 203 are respectively arranged to coincide with the axes of the two sets of driving screws 102, and the two sets of second bevel gears 206 are both arranged to coincide with the axes of the rotating rod 205. The hollow connecting column 201 and the two sets of hollow columns 101 are both made of stainless steel material, which is corrosion-resistant. The surfaces of the hollow connecting column 201 and the two sets of hollow columns 101 are also coated with anti-corrosion paint, which is used to further improve the anti-corrosion performance.

[0050] In addition, two groups of ribs 405 are provided between the two groups of C-shaped guide rails 401 and the adjacent hollow columns 101. Both sides of each group of ribs 405 are fixedly connected to the adjacent C-shaped guide rails 401 and the hollow columns 101 respectively. The ribs 405 are used to improve the structural strength of the device.

[0051] It should be noted that a sliding groove that fits with the sliding rail 104 is opened on the side of the screw nut 103 close to the sliding rail 104, and the screw nut 103 is slidably connected to the sliding rail 104 through the sliding groove. The height of the C-shaped guide rail 401 is greater than the distance from the side of the model table 402 away from the hollow column 101 to the mounting plate 403 in the horizontal state. The length of the first sliding groove 101a is greater than the length of the model table 402. When the screw nut 103 moves to the middle position on one side of the belt 3013, the sliding block 3014 just moves to the middle position on the other side of the belt 3013.

[0052] Example 2

[0053] A method for using a simulated sand table for land planning, based on Example 1, specifically comprises the following steps:

[0054] S1, fix the land planning model on the top of the model table 402, and print the plane map of the model on the surface of the display curtain 305;

[0055] S2, the driving motor 202 drives the corresponding driving screw 102 to rotate. When the driving screw 102 rotates, it drives the screw nut 103 to move upward or downward along the slide rail 104 according to the rotation direction. At the same time, the screw nut 103 drives the corresponding first bevel gear 203 to rotate. Under the transmission of the rotating rod 205, the two sets of second bevel gears 206 and the other set of first bevel gears 203, the two sets of driving screws 102 rotate synchronously, and then the two sets of screw nuts 103 move synchronously. When the two sets of screw nuts 103 move, they respectively drive the two sets of fixed plates 105 to move. When the two sets of fixed plates 105 move, they drive the model platform 402 to rotate, and the two sets of fixed plates 105 rotate. The model platform 402 can be adjusted to a horizontal or vertical state. When the two sets of lead screw nuts 103 move, they also drive the two sets of belts 3013 to rotate. When the two sets of belts 3013 rotate, they respectively drive the two sets of sliding blocks 3014 to slide along the corresponding second slide grooves 101b. The two sets of sliding blocks 3014 move at the same speed as the two sets of lead screw nuts 103 but in opposite directions. The two sets of sliding blocks 3014 pull the display curtain 305 through the first fixed rod 302. When the model platform 402 is horizontal, the surface of the display curtain 305 faces the side where the model platform 402 is located. When the model platform 402 is vertical, the surface of the display curtain 305 faces away from the model platform 402.

[0056] S3, when it is necessary to observe the sand table model from multiple angles, the model table 402 is adjusted to a horizontal state, at which time the model can be observed from multiple angles, and the global plane information of the model can be obtained through the display curtain 305. When it is necessary to observe the model globally, the model table 402 is adjusted to a vertical state, at which time a clear global perspective can be obtained, and personnel can also obtain the global information of the model from the rear through the display curtain 305.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A simulation sand table for land planning, characterized in that: include: A column assembly (100), wherein the column assembly (100) is provided with two groups, and the two groups of column assemblies (100) are arranged opposite to each other, and include a hollow column (101), a driving screw (102), a screw nut (103), a slide rail (104), a fixing plate (105) and a connecting column (106), wherein the driving screw (102) vertically penetrates the hollow column (101) and is rotatably connected to the hollow column (101), the screw nut (103) is arranged in the hollow column (101) and is threadedly connected to the driving screw (102), and the slide rail (104) is vertically arranged in the hollow column (101) and is away from the other group of column assemblies (100) with respect to the hollow column (101). ), the lead screw nut (103) is slidably connected to the slide rail (104), a first slide groove (101a) and a second slide groove (101b) are provided in the vertical direction on a side of the hollow column (101) facing the other group of column assemblies (100), the first slide groove (101a) is located facing the lead screw nut (103), a protrusion passing through the first slide groove (101a) is provided on a side of the lead screw nut (103) close to the first slide groove (101a), the fixed plate (105) is fixedly connected to a side of the protrusion away from the lead screw nut (103), and the connecting column (106) is fixedly connected to a side of the fixed plate (105) facing away from the lead screw nut (103); A driving mechanism (200), wherein the driving mechanism (200) is fixedly connected to the top of the two sets of hollow columns (101), and is used to drive the two sets of driving screws (102) to rotate; A first display mechanism (300), the first display mechanism (300) comprising a linkage assembly (301), a first fixed rod (302), a second fixed rod (303), a rotating roller (304) and a display curtain (305), the linkage assembly (301) being provided in two groups, the two groups of linkage assemblies (301) being respectively installed on the inner sides of two groups of hollow columns (101), comprising a mounting seat (3011), a pulley (3012), a belt (3013) and a sliding block (3014), the mounting seat (3011) and the pulley (3012) being provided in two groups, the two groups of mounting seats (3011) being fixedly connected to the inner wall of the hollow column (101), the two groups of pulleys (3012) being respectively rotatably connected to the two groups of mounting seats (3011), the belt (3013) being sleeved on the two groups of pulleys On the outside of the pulley (3012), the sliding block (3014) is slidably connected to the hollow column (101) through the second sliding groove (101b), the belt bodies on both sides of the belt (3013) are respectively fixedly connected to the sliding block (3014) and the lead screw nut (103), the first fixed rod (302) is horizontally arranged and its two ends are respectively fixedly connected to the two groups of sliding blocks (3014), the second fixed rod (303) is horizontally arranged and its two ends are respectively fixedly connected to the two groups of fixed plates (105), the roller (304) is horizontally arranged between the two groups of hollow columns (101) and its two ends are respectively rotatably connected to the two groups of hollow columns (101), one end of the display curtain (305) is fixedly connected to the second fixed rod (303), and the other end is fixedly connected to the first fixed rod (302) after passing the roller (304); The second display mechanism (400) comprises a C-shaped guide rail (401), a model platform (402), a mounting plate (403) and a track wheel (404), wherein the C-shaped guide rail (401), the mounting plate (403) and the track wheel (404) are each provided with two groups, the two groups of the C-shaped guide rail (401) are provided between the two groups of hollow columns (101), and the two groups of the C-shaped guide rail (401) are respectively fixedly connected to the two groups of hollow columns (101). The model platform (402) is arranged above the two groups of C-shaped guide rails (401), the two groups of connecting columns (106) are rotatably connected to the two sides of the model platform (402), the two groups of mounting plates (403) are fixedly connected to the two sides of the bottom of the model platform (402), the two groups of track wheels (404) are rotatably connected to the two groups of mounting plates (403), and the two groups of track wheels (404) are slidably connected to the two groups of C-shaped guide rails (401).

2. The land planning simulation sand table according to claim 1, characterized in that: The driving mechanism (200) comprises a hollow connecting column (201), a driving motor (202), a first bevel gear (203), a bearing seat (204), a rotating rod (205) and a second bevel gear (206); the hollow connecting column (201) is fixedly connected to the top of two groups of hollow columns (101); the driving motor (202) is fixedly connected to the top of the hollow columns (101) and is located directly opposite to one group of driving screws (102); both groups of driving screws (102) pass through the hollow connecting column (201) and are rotatably connected to the hollow connecting column (201); the rotating shaft of the driving motor (202) passes through the hollow connecting column (201) and is rotatably connected to the hollow connecting column (201); the driving motor (202) is fixedly connected to the top of the hollow columns (101) and is located directly opposite to one group of driving screws (102); both groups of driving screws (102) pass through the hollow connecting column (201) and are rotatably connected to the hollow connecting column (201); the rotating shaft of the driving motor (202) passes through the hollow connecting column (201) and is rotatably connected to the hollow connecting column (201); 2) The end of the rotating shaft is fixedly connected to the adjacent driving screw (102); two groups of the first bevel gear (203), the bearing seat (204) and the second bevel gear (206) are arranged in the hollow connecting column (201); the two groups of the first bevel gear (203) are respectively fixedly connected to the two groups of driving screws (102); the two groups of the bearing seats (204) are both fixedly connected to the inner wall of the hollow connecting column (201) and are arranged in opposite positions; the rotating rod (205) is rotatably connected to the two groups of bearing seats (204) and passes through the two groups of bearing seats (204); the two groups of the second bevel gears (206) are respectively fixedly connected to the two ends of the rotating rod (205); and the two groups of the second bevel gears (206) are respectively meshed with the two groups of the first bevel gears (203).

3. The land planning simulation sand table according to claim 2, characterized in that: The first display mechanism (300) further comprises a brush plate (306), wherein the brush plate (306) is fixedly connected to the bottom of the hollow connecting column (201), the brush plate (306) is located opposite to the rotating roller (304), and the bottom of the brush plate (306) has bristles of a length capable of touching the display curtain (305).

4. The land planning simulation sand table according to claim 2, characterized in that: The transmission ratio of the second bevel gear (206) to the first bevel gear (203) is 1:1, the two sets of the first bevel gears (203) are respectively arranged to coincide with the axes of the two sets of driving screws (102), and the two sets of the second bevel gears (206) are both arranged to coincide with the axes of the rotating rod (205).

5. A land planning simulation sand table according to any one of claims 2 to 4, characterized in that: The hollow connecting column (201) and the two groups of hollow columns (101) are both made of stainless steel material, and the surfaces of the hollow connecting column (201) and the two groups of hollow columns (101) are also coated with anti-corrosion paint.

6. The land planning simulation sand table according to claim 1, characterized in that: Two groups of rib plates (405) are arranged between the two groups of C-shaped guide rails (401) and the adjacent hollow columns (101), and the two sides of each group of rib plates (405) are fixedly connected to the adjacent C-shaped guide rails (401) and the hollow columns (101) respectively.

7. The land planning simulation sand table according to claim 1, characterized in that: A sliding groove that fits with the slide rail (104) is provided on one side of the lead screw nut (103) close to the slide rail (104), and the lead screw nut (103) is slidably connected to the slide rail (104) via the sliding groove.

8. The land planning simulation sand table according to claim 1, characterized in that: The height of the C-shaped guide rail (401) is greater than the distance from the side of the model platform (402) away from the hollow column (101) to the mounting plate (403) in a horizontal state, and the length of the first slide groove (101a) is greater than the length of the model platform (402).

9. The land planning simulation sand table according to claim 1, characterized in that: When the lead screw nut (103) moves to the middle position on one side of the belt (3013), the sliding block (3014) just moves to the middle position on the other side of the belt (3013).

10. A method for using a simulated sand table for land planning, using the simulated sand table as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: S1, a plan view of a land planning sand table model is printed on the surface of the display curtain (305); S2, the driving motor (202) drives the corresponding driving lead screw (102) to rotate. When the driving lead screw (102) rotates, the lead screw nut (103) is driven to move upward or downward along the slide rail (104) according to the rotation direction. At the same time, the lead screw nut (103) drives the corresponding first bevel gear (203) to rotate. Under the transmission of the rotating rod (205), the two sets of second bevel gears (206) and the other set of first bevel gears (203), the two sets of driving lead screws (102) rotate synchronously, and then the two sets of lead screw nuts (103) move synchronously. When the two sets of lead screw nuts (103) move, they respectively drive the two sets of fixed plates (105) to move. When the two sets of fixed plates (105) move, they drive the model platform (402) to rotate, and then The model platform (402) can be adjusted to a horizontal or vertical state. When the two sets of lead screw nuts (103) move, they also drive the two sets of belts (3013) to rotate. When the two sets of belts (3013) rotate, they respectively drive the two sets of sliding blocks (3014) to slide along the corresponding second sliding grooves (101b). The two sets of sliding blocks (3014) move at the same speed as the two sets of lead screw nuts (103) but move in opposite directions. The two sets of sliding blocks (3014) pull the display curtain (305) through the first fixed rod (302). When the model platform (402) is horizontal, the surface of the display curtain (305) faces the side where the model platform (402) is located. When the model platform (402) is vertical, the surface of the display curtain (305) faces away from the model platform (402). S3, when it is necessary to observe the sand table model from multiple angles, the model table (402) is adjusted to a horizontal state, at which time the model can be observed from multiple angles, and the global plane information of the model can be obtained through the display curtain (305); when it is necessary to observe the model globally, the model table (402) is adjusted to a vertical state, at which time a clear global perspective can be obtained, and personnel can also obtain the global information of the model from the rear through the display curtain (305).

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