Urban planning sand table convenient to disassemble and assemble

Abstract

The invention discloses an urban planning sand table convenient to disassemble and assemble, and relates to the technical field of urban construction, the urban planning sand table comprises a sand table box, the sand table box is internally provided with a storage cavity, the upper portion of the storage cavity is fixedly provided with a partition plate, and two linkage cleaning structures are symmetrically fixed to the two sides of the top of the partition plate and cooperate with two planning sand tables to blow air and remove dust; according to the invention, the control panel controls the electromagnets II in the two planning sand tables to be electrified, so that the front and back surfaces of the planning sand tables have magnetism, and a user quickly installs urban planning models on the front and back surfaces of the planning sand tables in a magnetic attraction manner according to urban planning requirements, then controls the overturning of the two planning sand tables, and displays different urban planning design schemes. According to the scheme, the model does not need to be reassembled, the display flexibility and interactivity are greatly improved, the planning sand table design with two available sides enables a user to simultaneously display two urban planning designs or compare models before and after transformation, and the intuition and persuasion of explanation are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of urban construction, and particularly relates to a sand table for urban planning that is convenient for disassembly and assembly. Background Art

[0002] "Urban planning" is to standardize urban development and construction, study the future development of cities, the rational layout of cities, and the comprehensive arrangement of various urban engineering constructions. It is a comprehensive deployment, the blueprint for urban development within a certain period, an important part of urban management, the basis for urban construction and management, and also the premise among the three stages of urban planning, urban construction, and urban operation. In the field of urban planning, as an intuitive and three-dimensional display method, sand table models are widely used in the display, explanation, and teaching of urban planning. The planning sand table is a form of expression of a system, process, thing, or concept being studied, and can also refer to a sample made by enlarging or reducing an experiment or drawing;

[0003] Traditional urban planning sand tables usually use single-sided sand table models for display. After the display is completed, it is necessary to disassemble it to install a new sand table model. For example, the "sand table for urban planning" provided by Chinese Patent Grant Publication No. CN216412501U, and this device is difficult to quickly disassemble and recombine, which to a certain extent limits the flexibility and practicality of the sand table model.

[0004] Secondly, during the display process of the sand table model, since dust and dirt are likely to accumulate on the surface of the model, it is necessary to clean and maintain it regularly. However, the traditional cleaning method of the sand table model is often rather cumbersome, and it requires manual use of tools such as brushes or hair dryers for cleaning, with low efficiency.

[0005] Therefore, there is an urgent need for a new type of sand table device that is convenient for disassembly and assembly, easy to clean, and can flexibly display urban planning schemes to meet the high-efficiency, convenience, and diversification requirements of the sand table model in the field of urban planning. Summary of the Invention

[0006] The present invention provides a sand table for urban planning that is convenient for disassembly and assembly, and solves the above-mentioned technical problems.

[0007] To solve the above technical problems, a sand table for urban planning that is convenient for disassembly and assembly provided by the present invention includes a sand table box. A control panel is installed on the upper front part of the sand table box and is electrically connected to an external power supply. Universal brake wheels are fixed at the four corners of the bottom of the sand table box. A flipping groove is opened at the top of the sand table box. An auxiliary storage structure is fixed in the middle of the flipping groove. Two planning sand tables are symmetrically and drivingly installed on both sides of the auxiliary storage structure in the flipping groove. Urban planning models are magnetically connected to the front and back sides of the two planning sand tables. A storage cavity is arranged inside the sand table box. A partition is fixed at the upper part of the storage cavity. Two linkage cleaning structures are symmetrically fixed on both sides of the top of the partition and cooperate with the two planning sand tables to blow and remove dust. An air pump is fixed at the bottom of the storage cavity and is electrically connected to the control panel. The output end of the air pump is connected to the two linkage cleaning structures through a hose. An observation port communicating with the storage cavity is opened on the back of the sand table box, and two box doors are symmetrically hinged at the observation port. An electromagnet two is installed inside the planning sand table and is electrically connected to the control panel. Side slots are opened at both ends of the planning sand table. Two hooks are fixed at the upper and lower edges inside the side slots. A rotating shaft is fixed in the middle of the planning sand table and is rotatably connected in the flipping groove of the sand table box. The rotating shaft penetrates through the sand table box and is drivingly connected to a driving structure.

[0008] Further, the driving structure includes a small gear fixed on the rotating shaft connecting the planning sand table and an outer box fixedly connected to the sand table box. A steering gear is fixed inside the outer box and is electrically connected to the control panel. A large gear is fixed on the output shaft of the steering gear, and the large gear meshes with the small gear.

[0009] Further, the urban planning model includes a house model, a greening model, a street lamp model, a road fence model, and a terrain and landform model. Iron sheets are fixed at the bottoms of the house model, the greening model, the street lamp model, the road fence model, and the terrain and landform model and are magnetically installed on the planning sand table.

[0010] Further, the auxiliary storage structure includes a sand table sub-box fixed in the middle of the top of the flipping groove. Side installation slots are opened at both ends of the sand table sub-box. An electromagnet one is fixed in the upper middle part of the sand table sub-box and is electrically connected to the control panel. Two telescopic collection structures are symmetrically installed in the lower middle part of the sand table sub-box.

[0011] Further, the telescopic collection structure includes two fixed rings fixed at the front and rear ends inside the sand table sub-box. A connecting shaft is rotatably connected in the middle between the two fixed rings. A storage net is wound around the outside of the connecting shaft. One end of the storage net penetrates through the sand table sub-box and extends out, and a limiting plate is fixed at the extending end of the storage net. A volute spring is sleeved outside the connecting shaft inside the two fixed rings. One end of the inner part of the volute spring is fixedly connected to the connecting shaft, and the outer end is fixedly connected to the fixed ring.

[0012] Further, two hanging grooves are formed on the front and rear sides of the limiting plate, and the two hanging grooves are in the same position as the upper and lower hooks in the side opening groove, and the hanging grooves are used in cooperation with the hooks.

[0013] Further, the limiting plate is made of iron material, and the limiting plate can be vertically placed manually and magnetically fixed in the side installation groove with the electromagnet I.

[0014] Further, the linkage cleaning structure includes a linkage plate. A plurality of telescopic springs are fixedly installed at the bottom of the linkage plate, and the plurality of telescopic springs are fixedly connected to the partition plate. Two rotating shaft seats are fixedly installed at the front and rear ends of the side of the linkage plate. Two connecting plates are rotatably connected by the two rotating shaft seats. A U-shaped seat is rotatably connected to the middle of each connecting plate, and the U-shaped seat is fixed on the partition plate. A diversion pipe is fixedly installed at one end of the two connecting plates away from the linkage plate, and a plurality of air blowing nozzles are fixedly communicated at the top of the diversion pipe.

[0015] Further, an air inlet joint is fixedly communicated with the side end of the diversion pipe, and the diversion pipe is connected to the air supply hose on the air pump through the air inlet joint.

[0016] Further, the cross section of the diversion pipe is in a semicircular shape or the two sides of the top are in an arc design, and the diversion pipe is located at the vertical center position of the planning sand table.

[0017] Compared with the related technology, a sand table for urban planning that is easy to disassemble and assemble provided by the present invention has the following beneficial effects:

[0018] The present invention provides that the electromagnet II in the two planning sand tables is controlled to be energized through the control panel, so that the front and back sides of the planning sand table have magnetism. According to the urban planning requirements, the user quickly installs the urban planning model on the front and back sides of the planning sand table in a magnetic adsorption manner, and then controls the flipping of the two planning sand tables to display different urban planning design schemes. There is no need to reassemble the model, which greatly improves the flexibility and interactivity of the display. The design of the double-sided available planning sand table enables the user to display two urban planning designs at the same time or compare the models before and after transformation, enhancing the intuitiveness and persuasion of the explanation.

[0019] The present invention provides that the linkage plate of the linkage cleaning structure is squeezed when the planning sand table is flipped, and drives the diversion pipe to blow air obliquely through the telescopic spring and the connecting plate, realizing dynamic dust removal of the planning sand table. The setting of the air blowing nozzles ensures the comprehensive cleaning of the model surface, ensuring the cleanliness and display effect of the model.

[0020] The present invention provides a design of an auxiliary storage structure. When the model needs to be removed, once the electromagnet 1 is powered off, the limiting plate flips downward and enters the side slot of the planning sand table. The control panel controls the planning sand table to flip, the hook is hooked into the hanging slot, the storage net is pulled to unfold and cover the bottom model. After the electromagnet 2 is powered off, the bottom model drops into the storage net. After the user collects the upper model, the model in the storage net is taken out and placed in the storage cavity. Finally, the planning sand table flips back, the volute spring drives the storage net to wind up, and the limiting plate returns to the side installation slot, enabling the urban planning model to be installed and disassembled quickly and conveniently. The cooperation between the limiting plate controlled by the electromagnet and the storage net realizes the automatic collection and storage of the model, greatly simplifying the process of model management. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an overall schematic diagram of a sand table for urban planning that is easy to disassemble and assemble according to the present invention;

[0022] Figure 2 is an internal open schematic diagram of a sand table for urban planning that is easy to disassemble and assemble according to the present invention;

[0023] Figure 3 is a front view sectional schematic diagram of a sand table for urban planning that is easy to disassemble and assemble according to the present invention;

[0024] Figure 4 is a schematic diagram of the planning sand table according to the present invention;

[0025] Figure 5 is a schematic diagram of the auxiliary storage structure according to the present invention;

[0026] Figure 6 is an internal schematic diagram of the entire part of the auxiliary storage structure according to the present invention;

[0027] Figure 7 is an enlarged schematic diagram at position A according to the present invention;

[0028] Figure 8 is a partial front view schematic diagram of the cooperation between the auxiliary storage and the planning sand table according to the present invention;

[0029] Figure 9 is a schematic diagram of the linkage cleaning structure according to the present invention.

[0030] Reference numerals in the figure: 1, sand table box; 2, universal brake wheel; 3, control panel; 4, auxiliary storage structure; 41, secondary sand table box; 411, side installation groove; 42, telescopic collection structure; 421, storage net; 422, limit plate; 4221, hanging groove; 423, fixing ring; 424, volute spring; 425, connecting shaft; 43, electromagnet 1; 5, planning sand table; 51, electromagnet 2; 52, side slot; 521, hook; 53, drive structure; 531, servo motor; 532, small gear; 533, large gear; 6, urban planning model; 7, box door; 8, partition board; 9, linkage cleaning structure; 91, linkage plate; 911, rotating shaft seat; 92, telescopic spring; 93, U-shaped seat; 94, connecting plate; 95, shunt pipe; 951, air blowing nozzle; 10, air pump. Detailed implementation mode

[0031] Example 1, given by Figures 1-9 An easily disassembled sand table for urban planning, including a sand table box 1. A control panel 3 is installed at the upper front part of the sand table box 1 and is electrically connected to an external power supply. Universal brake wheels 2 are fixed at the four corners of the bottom of the sand table box 1. A flipping groove is provided at the top of the sand table box 1. An auxiliary storage structure 4 is fixed in the middle of the flipping groove. Two planning sand tables 5 are symmetrically and drivenly installed on both sides of the auxiliary storage structure 4 in the flipping groove. Urban planning models 6 are magnetically connected to the front and back sides of the two planning sand tables 5. A storage cavity is arranged inside the sand table box 1. A partition board 8 is fixed at the upper part of the storage cavity. Two linkage cleaning structures 9 are symmetrically fixed on both sides of the top of the partition board 8 and cooperate with the two planning sand tables 5 to blow air for dust removal. An air pump 10 is fixed at the bottom of the storage cavity and is electrically connected to the control panel 3. The output end of the air pump 10 is connected to the two linkage cleaning structures 9 through a hose. An observation port is provided on the back of the sand table box 1 and is communicated with the storage cavity. Two box doors 7 are symmetrically hinged at the observation port; An electromagnet 2 51 is installed inside the planning sand table 5 and is electrically connected to the control panel 3. Side slots 52 are provided at both ends of the planning sand table 5. Two hooks 521 are fixed on the upper and lower edges inside the side slots 52. A rotating shaft is fixed in the middle of the planning sand table 5 and is rotatably connected in the flipping groove of the sand table box 1. The rotating shaft penetrates through the sand table box 1 and is drivingly connected to a drive structure 53.

[0032] Specifically, the sand table box 1 is moved to the required position through the universal brake wheels 2. The user controls the electromagnet two 51 in the two planning sand tables 5 to be energized through the control panel 3, so that the front and back sides of the planning sand table 5 have magnetism. Subsequently, according to the urban planning requirements, the user quickly installs the urban planning model 6 on the planning sand table 5 by magnetic attraction. When the front urban planning model 6 is displayed, the control panel 3 controls the driving structure 53 to drive the planning sand table 5 to rotate around the rotating shaft to achieve flipping, and continue to install the back urban planning model 6. The sand table main body is composed of two planning sand tables 5 and an auxiliary storage structure 4. The front and back sides of the two planning sand tables 5 can be used as independent sand tables, that is, two urban planning design model schemes can be installed at the same time, or the urban model before renovation and the urban planning model 6 after renovation can be installed separately for explanation.

[0033] In this embodiment, the driving structure 53 includes a small gear 532 fixed on the connecting rotating shaft of the planning sand table 5 and an outer box fixedly connected to the sand table box 1. A steering gear 531 is fixedly installed inside the outer box and electrically connected to the control panel 3. A large gear 533 is fixed on the output shaft of the steering gear 531, and the large gear 533 meshes with the small gear 532.

[0034] Specifically, the control panel 3 controls the steering gear 531 in the driving structure 53 to start. The large gear 533 on the output shaft of the steering gear 531 meshes with the small gear 532, driving the planning sand table 5 to rotate around the rotating shaft to achieve flipping.

[0035] In this embodiment, the urban planning model 6 is composed of a house model, a greening model, a street lamp model, a road fence model, and a terrain model. And iron sheets are fixed at the bottoms of the house model, the greening model, the street lamp model, the road fence model, and the terrain model for magnetic attraction installation on the planning sand table 5. The urban planning model 6 can be installed at any position on the planning sand table 5 according to the urban planning design.

[0036] Embodiment 2, on the basis of Embodiment 1, the auxiliary storage structure 4 includes a sand table sub-box 41 fixed in the middle of the top of the flipping groove. Side installation grooves 411 are opened at both ends of the sand table sub-box 41. An electromagnet one 43 is fixedly installed in the upper middle part of the sand table sub-box 41 and electrically connected to the control panel 3. Two telescopic collection structures 42 are symmetrically installed in the lower middle part of the sand table sub-box 41; the telescopic collection structure 42 includes two fixed rings 423 fixed at the front and rear ends inside the sand table sub-box 41. A connecting shaft 425 is rotatably connected in the middle between the two fixed rings 423. A storage net 421 is wound around the outside of the connecting shaft 425. One end of the storage net 421 penetrates through the sand table sub-box 41 and extends out, and a limiting plate 422 is fixed at the extending end of the storage net 421. A volute spring 424 is sleeved outside the connecting shaft 425 inside the two fixed rings 423. One end of the inside of the volute spring 424 is fixedly connected to the connecting shaft 425, and the other end of the outside is fixedly connected to the fixed ring 423.

[0037] Specifically, the electromagnet 43 of the auxiliary storage structure 4 is energized before use to attract the limiting plate 422 to be vertically placed in the side installation groove 411, so as to avoid affecting the flipping of the planning sand table 5. When the model needs to be removed, the electromagnet 43 is de-energized, and the limiting plate 422 flips downward and enters the side slot 52 of the planning sand table 5. The control panel 3 controls the flipping of the planning sand table 5, and the hook 521 is hung into the hanging slot 4221, pulling the storage net 421 to unfold and cover the bottom model. After the electromagnet 51 is de-energized, the bottom model falls into the storage net 421. After the user collects the upper model, the model in the storage net 421 is taken out and placed in the storage cavity. Finally, the planning sand table 5 flips in the reverse direction, and the volute spring 424 drives the storage net 421 to wind up, and the limiting plate 422 returns to the side installation groove 411.

[0038] Among them, two hanging slots 4221 are opened on the front and rear sides of the limiting plate 422, and the two hanging slots 4221 are in the same position as the upper and lower two hooks 521 in the side slot 52, and the hanging slot 4221 and the hook 521 are used in cooperation; the limiting plate 422 is made of iron material, has sufficient strength and stability, can be vertically placed manually in the side installation groove 411 of the sand table sub-box 41, and is fixed by the magnetic attraction of the electromagnet 43. This fixing method not only ensures the stability of the limiting plate 422 during the flipping of the sand table, but also facilitates the user to adjust the position of the limiting plate 422 at any time according to needs.

[0039] Among them, the limiting plate 422 is made of iron material, and the limiting plate 422 can be vertically placed manually and magnetically fixed with the electromagnet 43 in the side installation groove 411; when the planning sand table 5 flips, the hook 521 in its side slot 52 will be hung into the hanging slot 4221 of the limiting plate 422.

[0040] Embodiment 3, on the basis of Embodiment 1, the linkage cleaning structure 9 includes a linkage plate 91. A plurality of telescopic springs 92 are fixedly installed at the bottom of the linkage plate 91, and the plurality of telescopic springs 92 are fixedly connected to the partition plate 8. Two rotating shaft seats 911 are fixedly installed at the front and rear ends of the side of the linkage plate 91. Two connecting plates 94 are rotatably connected by the two rotating shaft seats 911. A U-shaped seat 93 is rotatably connected to the middle of each connecting plate 94, and the U-shaped seat 93 is fixed on the partition plate 8. A diversion pipe 95 is fixedly installed at one end of the two connecting plates 94 away from the linkage plate 91, and a plurality of air blowing nozzles 951 are fixedly connected to the top of the diversion pipe 95.

[0041] Specifically, the linkage plate 91 of the linkage cleaning structure 9 is squeezed when the planning sand table 5 flips, and drives the diversion pipe 95 to blow air obliquely through the telescopic springs 92 and the connecting plates 94, realizing dynamic dust removal of the planning sand table 5. The setting of the air blowing nozzles 951 ensures the comprehensive cleaning of the model surface. When the flipping of the planning sand table 5 is completed, the telescopic springs 92 drive the linkage plate 91 and the diversion pipe 95 to return to their positions, preparing for the next dust removal operation.

[0042] Among them, the side end of the shunt pipe 95 is fixedly connected with an air supply joint, and the shunt pipe 95 is connected to the air supply hose on the air pump 10 through the air supply joint; the compressed air is conveyed into the shunt pipe 95 by the air pump 10 to realize the blowing of multiple blowing nozzles 951.

[0043] Among them, the cross-section of the shunt pipe 95 is semi-circular or the two sides of the top are arc-shaped, and the shunt pipe 95 is located at the vertical center position of the planning sand table 5; the semi-circular shunt pipe 95 is used to make contact and extrusion with the planning sand table 5 when it is placed.

[0044] Working principle:

[0045] The sand table box 1 is moved to the designated position through the universal brake wheels 2. During work, the user controls the electromagnets two 51 in the two planning sand tables 5 to be energized through the control panel 3, so that the front and back sides of the two planning sand tables 5 have magnetism. At this time, the user can, according to the needs of urban planning, install the house models, greening models, street lamp models, road fence models, terrain and landform models, etc. in the urban planning model 6 on the planning sand table 5 quickly and conveniently by means of magnetic attraction of the iron sheets at their bottoms;

[0046] The sand table main body is composed of two planning sand tables 5 and an auxiliary storage structure 4. The front and back sides of the two planning sand tables 5 can be used as independent sand tables, that is, two urban planning design model schemes can be installed at the same time, or the urban model before transformation and the urban planning model 6 after transformation can be installed separately for explanation;

[0047] When the explanation of the urban planning model 6 on the front of the two planning sand tables 5 is completed, the user controls the driving structure 53 of the two planning sand tables 5 through the control panel 3. After the servo motor 531 receives the signal, the large gear 533 on its output shaft meshes with the small gear 532, driving the planning sand table 5 to rotate around the rotating shaft to realize flipping. The flipping directions of the two planning sand tables 5 are opposite, so as to display the second urban planning model 6 scheme on the back of the two planning sand tables 5. There is no need to reassemble the urban planning model, and the operation is relatively convenient. At the same time, the control panel 3 can also separately control one of the planning sand tables 5 to flip and display to realize the comparative explanation of the two schemes;

[0048] Each time the control panel 3 controls the servo 53 to drive the planning sand table 5 to flip, it will simultaneously control the air pump 10 to start. The air pump 10 blows air upward through multiple air nozzles 951 on two shunt pipes 95. When the planning sand table 5 flips, it passes through the air wall composed of multiple air nozzles 951 to blow and dust the urban planning model on the planning sand table 5 to keep it clean. When the planning sand table 5 flips to ninety degrees, it contacts and presses the linkage plate 91. The displacement of the linkage plate 91 downward drives multiple telescopic springs 92 to compress, and at the same time drives two connecting plates 94 to tilt upward, and the two connecting plates 94 further drive the shunt pipe 95 to blow air upward obliquely, realizing dynamic blowing and dust removal of the planning sand table 5, especially blowing and dusting the dead corners of the urban planning model. After the planning sand table 5 separates from the linkage plate 91, multiple telescopic springs 92 rebound to make the linkage plate 91 return to its original position. The linkage plate 91 drives the two connecting plates 94 to make the shunt pipe 95 return to its original position. After the servo 53 completes the flip, it is powered off, and the air pump 10 is also powered off;

[0049] Before the auxiliary storage structure 4 is used, the control panel 3 controls the electromagnet 43 to be energized, and then the box door 7 is opened to expose the channel of the side installation groove 411 of the sand table sub-box 41. Manually move the limit plate 422 upward and erect it, and it is adsorbed in the side installation groove 411 by the electromagnet 43, so as to ensure that the planning sand table 5 is not affected during flipping. When it is necessary to remove the urban planning models on the front and back of the planning sand table 5 after the device is used up, the control panel 3 controls the electromagnet 43 to be powered off, so that the limit plates 422 in the two side installation grooves 411 of the sand table sub-box 41 turn downward and enter the side slots 52 of the planning sand table 5. At this time, the control panel 3 controls the servos 531 of the two driving structures 53 to drive the two planning sand tables 5 to flip. During the flipping process, the hooks 521 on the upper part of the planning sand table 5 are hung into the hanging grooves 4221 of the limit plates 422, pulling the limit plates 422 to displace, thereby driving the storage net 421 to be pulled out and flipped. The connecting shaft 425 rotates to drive the volute spring 424 to contract and store energy. As the flipping is completed, the storage net 421 covers the urban planning model at the bottom of the planning sand table 5. At this time, the control panel 3 controls the two electromagnets 51 to be powered off, and the urban planning models at the bottoms of the two planning sand tables 5 fall into the storage net 421 for collection. The user can quickly pick up and collect the urban planning models on the upper parts of the two planning sand tables 5, and then take out the urban planning models in the storage net 421 and place them at the bottom of the storage cavity (not specifically labeled, but can be understood as a certain area in the sand table box 1), realizing the rapid disassembly of the urban planning model;

[0050] Finally, the control panel 3 controls the servos 531 of the two driving structures 53 to drive the two planning sand tables 5 to flip in the reverse direction. During the flipping process, the limit plate 422 separates from the hook 521, and the volute spring 424 rebounds to drive the connecting shaft 425 to wind up the storage net 421, so that the limit plate 422 returns to the side installation groove 411 again, facilitating the next use.

Claims

1. A sand table for urban planning that is convenient for disassembly and assembly, including a sand table box (1), characterized in that: A control panel (3) is installed at the upper front part of the sand table box (1) and is electrically connected to an external power supply. Universal brake wheels (2) are fixed at the four corners of the bottom of the sand table box (1). A flip groove is formed at the top of the sand table box (1). An auxiliary storage structure (4) is fixed in the middle of the flip groove. Two planning sand tables (5) are symmetrically and drivably installed on both sides of the auxiliary storage structure (4). Urban planning models (6) are magnetically connected to both the front and back sides of the two planning sand tables (5). A storage cavity is arranged inside the sand table box (1). A partition plate (8) is fixed at the upper part of the storage cavity. Two linkage cleaning structures (9) are symmetrically fixed on both sides of the top of the partition plate (8) and cooperate with the two planning sand tables (5) to blow and remove dust. An air pump (10) is fixed at the bottom of the storage cavity and is electrically connected to the control panel (3). The output end of the air pump (10) is connected to the two linkage cleaning structures (9) through a hose. An observation port is formed at the back of the sand table box (1) and is communicated with the storage cavity. Two box doors (7) are symmetrically hinged at the observation port; An electromagnet two (51) is installed inside the planning sand table (5) and is electrically connected to the control panel (3). Side slots (52) are formed at both ends of the planning sand table (5). Two hooks (521) are fixed at both the upper and lower edges inside the side slots (52). A rotating shaft is fixed in the middle of the planning sand table (5) and is rotatably connected in the flip groove of the sand table box (1). The rotating shaft penetrates through the sand table box (1) and is drivingly connected to a driving structure (53).

2. The sand table for urban planning that is convenient for disassembly and assembly according to claim 1, wherein, The driving structure (53) includes a small gear (532) fixed on the rotating shaft connected to the planning sand table (5) and an outer box fixedly connected to the sand table box (1). A steering gear (531) is fixed inside the outer box and is electrically connected to the control panel (3). A large gear (533) is fixed on the output shaft of the steering gear (531). The large gear (533) meshes with the small gear (532).

3. A sand table for urban planning that is easy to disassemble and assemble according to claim 1, characterized in that, The urban planning model (6) is composed of a house model, a greening model, a street lamp model, a road fence model, and a terrain and landform model. Iron sheets are fixed at the bottoms of the house model, the greening model, the street lamp model, the road fence model, and the terrain and landform model and are magnetically installed on the planning sand table (5).

4. The sand table for urban planning that is convenient for disassembly and assembly according to claim 1, wherein, The auxiliary storage structure (4) includes a sand table sub-box (41) fixed at the middle of the top of the flip groove. Side installation slots (411) are formed at both ends of the sand table sub-box (41). An electromagnet one (43) is fixed at the upper middle part inside the sand table sub-box (41) and is electrically connected to the control panel (3). Two telescopic collection structures (42) are symmetrically installed at the lower middle part inside the sand table sub-box (41).

5. The sand table for urban planning that is convenient for disassembly and assembly according to claim 4, wherein The telescopic collection structure (42) includes two fixed rings (423) fixed to the front and rear ends inside the auxiliary sand box (41). A connecting shaft (425) is rotatably connected in the middle between the two fixed rings (423). A storage net (421) is wound around the outside of the connecting shaft (425). One end of the storage net (421) penetrates through the auxiliary sand box (41) and extends out, and a limiting plate (422) is fixed to the extending end of the storage net (421). A scroll spring (424) is sleeved outside the connecting shaft (425) inside the two fixed rings (423). One end inside the scroll spring (424) is fixedly connected to the connecting shaft (425), and the other end outside is fixedly connected to the fixed ring (423).

6. The sand table for urban planning that is convenient for disassembly and assembly according to claim 5, wherein, Two hanging grooves (4221) are opened on the front and rear sides of the limiting plate (422), and the two hanging grooves (4221) are in the same position as the upper and lower two hooks (521) in the side opening groove (52), and the hanging grooves (4221) are used in cooperation with the hooks (521).

7. A sand table for urban planning that is convenient for disassembly and assembly according to claim 5, characterized in that, The limiting plate (422) is made of iron material, and the limiting plate (422) can be vertically placed manually and magnetically fixed to the electromagnet 1 (43) in the side installation groove (411).

8. The sand table for urban planning that is convenient for disassembly and assembly according to claim 1, wherein, The linkage cleaning structure (9) includes a linkage plate (91). A plurality of telescopic springs (92) are fixedly installed at the bottom of the linkage plate (91). The plurality of telescopic springs (92) are fixedly connected to the partition plate (8). Two rotating shaft seats (911) are fixedly installed at the front and rear sides of the side end of the linkage plate (91). Two connecting plates (94) are rotatably connected by the two rotating shaft seats (911). A U-shaped seat (93) is rotatably connected to the middle of each connecting plate (94). The U-shaped seat (93) is fixed to the partition plate (8). One end of the two connecting plates (94) far from the linkage plate (91) is fixedly connected with a shunt pipe (95). A plurality of air blowing nozzles (951) are fixedly connected to the top of the shunt pipe (95).

9. The sand table for urban planning that is convenient for disassembly and assembly according to claim 8, wherein, An air inlet joint is fixedly connected to the side end of the shunt pipe (95), and the shunt pipe (95) is connected to the air delivery hose on the air pump (10) through the air inlet joint.

10. A sand table for urban planning that is easy to disassemble and assemble according to claim 8, characterized in that, The cross section of the shunt pipe (95) is semicircular or the two sides of the top are arc-shaped, and the shunt pipe (95) is located at the vertical center position of the planning sand table (5).

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