Display stand of simulation sand table for environment planning

Abstract

The utility model relates to the technical field of sand table display tools, in particular to a display stand of a simulation sand table for environmental planning, which comprises a stand body, a lifting piece and a winding assembly, the stand body comprises a mounting part for mounting a sand table body, the lifting piece is arranged in the height direction of the stand body in a sliding manner, and the lifting piece is provided with an annular hole; the lifting part is located on the outer side of the installation part, when the lifting part moves up and down, the lifting part is arranged in the table body or the hole wall of the annular hole seals the periphery of the installation part, the winding assembly comprises a rotating shaft and a roller shutter, the rotating shaft is rotationally installed on one side wall of the lifting part, and the roller shutter is wound on the rotating shaft and arranged on the lifting part in a sliding mode. The lifting piece and the roller shutter are arranged in a sliding mode, the lifting piece moves upwards and surrounds the sand table body after the sand table is closed and unfolded, then the roller shutter is pulled out, the hole opening of the annular hole is closed, and the dust sealing device has the advantages that dust sealing can be achieved by one person, and the dust sealing device is suitable for a large-area simulation sand table.

Description

Technical Field

[0001] The present application relates to the technical field of sand table display tools, and more specifically to a display stand of a simulated sand table for environmental planning. Background Art

[0002] Environmental planning is the rational spatial and temporal arrangement of human activities and the environment in order to achieve coordinated development of the environment, economy and society. As a three-dimensional and intuitive planning schematic device, the urban sand table model brings the panoramic view of the city to the visitors, vividly showing the past, present and future of urban development, and is widely used in urban planning.

[0003] There is a display stand for simulating sand table for environmental planning, such as Figure 1 As shown, it includes a platform 90 and a plate 91. The plate 91 is fixedly mounted on the top surface of the platform 90. City models such as mountains, rivers, and buildings are arranged in equal proportions on the plate 91. Visitors can walk around the platform 90 to observe the simulated city panorama on the plate 91. It should be noted that, in order to facilitate visitors to lean over and observe the layout of a certain plot of land at close range, there is no glass or transparent acrylic fence on the outside of the disk 91; after the visit, the exhibition hall loses power, and external dust is easy to flow with the air and adhere to the city model. In order to reduce the impact of external dust on the city model on the disk 91, the city model is often wiped regularly by maintenance personnel. In addition, after each exhibition, the disk 91 is covered with a piece of cloth or a cover. However, due to the large area of ​​the disk 91 and the overall area of ​​the cloth or cover, the cover is heavy, and the cloth is large and soft, so it is difficult for one person to cover the disk 91 well; secondly, when using cloth to cover the city model, since the heights of the city models are different, the cloth is easy to form a bulge after covering, which is easy to cause the cloth to slip.

[0004] Therefore, there is a demand for providing a simulated sand table for environmental planning that can be sealed off by one person and is suitable for a large-area simulated sand table. Utility Model Content

[0005] The main purpose of the present application is to provide a display stand for a simulated sand table for environmental planning, wherein the display stand for a simulated sand table for environmental planning includes a platform, a lifting member and a winding assembly, the platform includes a mounting portion for mounting a sand table body, the lifting member is slidably arranged in the height direction of the platform, the lifting member has a through annular hole and makes the lifting member a closed ring body, the lifting member is located on the outside of the mounting portion, when the lifting member moves up and down, the lifting member is placed in the platform body or the hole wall of the annular hole to close the surroundings of the mounting portion, the winding assembly includes a rotating shaft and a rolling curtain, the rotating shaft is rotatably mounted on a side wall of the lifting member, The rolling curtain is wound on the rotating shaft and slidably arranged on the lifting member. When the rotating shaft rotates, the rolling curtain closes or opens the top opening of the annular hole. During the idle period after closing and unfolding, the lifting member is moved upward by a predetermined distance and surrounds the sand table body, and then the rolling curtain is pulled out and the top opening of the annular hole is closed, so that the sand table body is wrapped in all directions to prevent external dust from adhering to the sand table body, thereby achieving dustproofing of the sand table body. In addition, since the lifting member and the rolling curtain are both slidably arranged, only one person is required to realize the upward movement of the lifting member and the horizontal movement of the rolling curtain. Compared with the existing technology, it has the advantages that one person can realize dust sealing and is suitable for large-area simulated sand tables.

[0006] Another object of the present application is to provide a display stand for a simulated sandbox for environmental planning, wherein the bottom of the platform body is also provided with a placement cavity, the placement cavity is connected to the annular slide groove, and both ends of the lifting member are provided with an extension portion. The display stand for a simulated sandbox for environmental planning also includes a lifting drive assembly, and the lifting drive assembly includes a forward and reverse double-headed motor, two transmission rods and two screw rods. The forward and reverse double-headed motor is placed in the placement cavity and connected to the platform body. The two screw rods are respectively located at the two ends of the lifting member and are rotatably installed on the platform body. The two ends of each transmission rod are respectively connected to the corresponding screw rod and one end of the rotating shaft of the forward and reverse double-headed motor. Each screw rod is spirally connected to the corresponding extension portion. The rotation of the forward and reverse double-headed motor drives the two screw rods to rotate, and the lifting member is moved up and down.

[0007] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a display stand of a simulated sand table for environmental planning, wherein the display stand of a simulated sand table for environmental planning comprises:

[0008] A platform, the platform comprising a mounting portion for mounting a sand table body; and

[0009] a lifting member, the lifting member is slidably arranged in the height direction of the platform, the lifting member has a through annular hole and makes the lifting member a closed ring, the lifting member is located outside the mounting portion, when the lifting member moves up and down, the lifting member is placed in the platform or in the hole wall of the annular hole to close the surroundings of the mounting portion; and

[0010] A winding assembly includes a rotating shaft and a rolling curtain. The rotating shaft is rotatably mounted on a side wall of the lifting member. The rolling curtain is wound on the rotating shaft and slidably arranged on the lifting member. When the rotating shaft rotates, the rolling curtain closes or opens the top opening of the annular hole.

[0011] In one or more embodiments of the present application, the platform body also has an annular slide groove, which is located on the outside of the mounting portion. The annular slide groove extends from the top surface of the platform body toward the bottom surface of the platform body by a predetermined distance, and the lifting member is slidably disposed in the annular slide groove.

[0012] In one or more embodiments of the present application, the bottom of the platform body also has a placement cavity, the placement cavity is connected to the annular slide groove, both ends of the lifting member have an extension portion, and the display stand of the simulated sand table for environmental planning also includes a lifting drive assembly, the lifting drive assembly includes a forward and reverse double-headed motor, two transmission rods and two screw rods, the forward and reverse double-headed motor is placed in the placement cavity and connected to the platform body, the two screw rods are respectively located at the two ends of the lifting member and are rotatably installed on the platform body, the two ends of each transmission rod are respectively connected to the corresponding screw rod and one end of the rotating shaft of the forward and reverse double-headed motor, and each screw rod is spirally connected to the corresponding extension portion.

[0013] In one or more embodiments of the present application, the winding assembly further includes a torsion spring, and two ends of the torsion spring are respectively fixedly connected to the rotating shaft and the lifting member.

[0014] In one or more embodiments of the present application, both side edges of the lifting member are provided with an anti-slip groove, and the two side edges with the anti-slip groove are arranged in parallel and vertically with the side edge of the lifting member provided with the rotating shaft, and the two side edges of the rolling shutter are in contact with the corresponding groove surfaces of the anti-slip groove.

[0015] In one or more embodiments of the present application, one end of the rolling shutter has a bending portion, and the other side of the lifting member away from the rotating shaft has a locking groove, and when the rolling shutter closes the top opening of the annular hole, the bending portion is locked into the locking groove.

[0016] In one or more embodiments of the present application, the lifting member has a notch on the top of one side wall of the embedding groove, and the notch is connected to the embedding groove. The lifting member also includes a pressing block. When the pressing block is placed in the notch and the bent portion is located in the embedding groove, the pressing block presses the bent portion.

[0017] In one or more embodiments of the present application, the notch is provided with a magnet, and when the pressing block is placed in the notch, the pressing block is attracted to the magnet.

[0018] In one or more embodiments of the present application, the mounting portion has a plurality of connection holes for connecting to the sand table body.

[0019] In an embodiment of the present application, a display stand for a simulated sand table for environmental planning includes a platform, a lifting member and a winding assembly. The platform includes a mounting portion for mounting the sand table body. The lifting member is slidably arranged in the height direction of the platform. The lifting member has a penetrating annular hole and makes the lifting member a closed ring body. The lifting member is located on the outside of the mounting portion. When the lifting member moves up and down, the lifting member is placed in the platform body or in the hole wall of the annular hole to close the surroundings of the mounting portion. The winding assembly includes a rotating shaft and a rolling curtain. The rotating shaft is rotatably installed on a side wall of the lifting member. The rolling curtain is wound on the rotating shaft and slidably arranged on the lifting member. When the shaft rotates, the rolling shutter closes or opens the top opening of the annular hole. During the idle period after closing and unfolding, the lifting member is moved upward by a predetermined distance to surround the sand table body, and then the rolling shutter is pulled out to close the top opening of the annular hole, so as to wrap the sand table body in all directions, avoid external dust from adhering to the sand table body, and realize dustproof of the sand table body. In addition, since the lifting member and the rolling shutter are both slidingly arranged, only one person is needed to realize the upward movement of the lifting member and the horizontal movement of the rolling shutter. Compared with the existing technology, it has the advantages of being able to seal and close the sand table by one person and being suitable for large-area simulated sand tables. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0021] Figure 1 The figure shows a structural schematic diagram of an existing display stand of a simulated sand table for environmental planning;

[0022] Figure 2 The figure shows a schematic structural diagram of a display stand of a simulated sand table for environmental planning in a certain viewing angle of the utility model;

[0023] Figure 3 The figure shows a schematic structural diagram of a display stand of a simulated sand table for environmental planning according to the utility model from another perspective;

[0024] Figure 4Picture shows Figure 2 A local enlarged view of point C;

[0025] Figure 5 The figure shows a schematic diagram of the anti-slip groove of the lifting member;

[0026] Figure 6 Picture shows Figure 2 A local enlarged view of point D. DETAILED DESCRIPTION

[0027] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0028] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0029] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0030] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0031] Application Overview

[0032] There is a display stand for a simulated sand table for environmental planning. Since the area of ​​the table is large, the overall area of ​​the cloth or cover is large, and since the cover is heavy and the cloth is large and soft, it is difficult for one person to cover the table well. Secondly, when the cloth is used to cover the city model, since the heights of the city models are different, the cloth is likely to form a bulge after covering, which is easy to cause the cloth to slip.

[0033] Based on the above technical problems, the present application proposes a display stand of a simulated sand table for environmental planning, wherein the display stand of the simulated sand table for environmental planning has a simple structure, does not involve complicated manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the display stand of the simulated sand table for environmental planning provided by the present application is easy to produce and low in cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0034] A display stand for schematic environmental planning using a simulated sand table.

[0035] refer to Figures 2 to 6 According to a preferred embodiment of the utility model, a display stand for a simulated sand table for environmental planning is provided. Figure 2 As shown, it includes a body 10, and the body 10 includes a mounting portion 101 for mounting a sand table body. Specifically, the mounting portion 101 has a plurality of connecting holes 1011 for connecting with the sand table body, and the connecting holes 1011 are threaded holes. By setting the connecting holes 1011, it is convenient to thread the sand table body with the mounting portion 101, and the mounting portion 101 provides a bottom support for the sand table body.

[0036] It should be noted that city models such as mountains, rivers, and buildings are arranged on the sand table body. During the exhibition period, due to the continuous operation of the fresh air system in the exhibition hall, the city models are not easily covered with dust; after the exhibition, if the fresh air system is allowed to work uninterruptedly for 24 hours, the cost is relatively high. Therefore, the existing dust prevention method is to cover or cover the sand table body with a piece of cloth or an acrylic cover. However, due to the large area of ​​the sand table body and the different heights of the city models, the entire covering process often requires multiple people to perform, and the larger the area of ​​the sand table body, the more cumbersome and inconvenient the covering process is.

[0037] In view of this, in the embodiments of the present application, Figure 2 , Figure 3 and Figure 4 The display platform of the simulated sand table for environmental planning further includes a lifting member 20 and a winding assembly 30. The lifting member 20 is slidably arranged in the height direction of the platform body 10, referring to Figure 3 The lifting member 20 has a through annular hole 201 and makes the lifting member 20 a closed ring body. In the embodiment of the present application, the lifting member 20 is a rectangular frame. The lifting member 20 is located outside the mounting portion 101. When the lifting member 20 moves up and down, the lifting member 20 is placed in the platform 10 or the hole wall of the annular hole 201 closes the surroundings of the mounting portion 101. In addition, referring to Figure 4The winding assembly 30 includes a rotating shaft 301 and a rolling curtain 302. The rotating shaft 301 is rotatably mounted on a side wall of the lifting member 20 through a bearing. More specifically, one side wall of the lifting member 20 has a groove 202. The rotating shaft 301 is rotatably hidden in the groove 202. The rolling curtain 302 is wound on the rotating shaft 301 and slidably set on the lifting member 20. When the rotating shaft 301 rotates, the rolling curtain 302 closes or opens the top opening of the annular hole 201.

[0038] It should be noted that, under normal conditions, the lifting member 20 is placed in the platform 10, and the rolling curtain 302 is wound around the rotating shaft 301 and hidden in the groove 202 and opens the top opening of the annular hole 201; after unfolding, the lifting member 20 is moved upward by a predetermined distance and the hole wall of the annular hole 201 is closed around the mounting portion 101, and the rolling curtain 302 is higher than any city model on the sand table body, and the rolling curtain 302 is pulled to close the top opening of the annular hole 201, thereby achieving all-round wrapping of the sand table body in the annular hole 201 and achieving the purpose of dust prevention; in addition, since the lifting member 20 and the rolling curtain 302 are respectively slidingly arranged Placed on the platform 10 and the lifting member 20, the entire process of sliding the lifting member 20 and the rolling curtain 302 only requires one person to operate, that is, the exhibition hall staff can first move the lifting member 20 upward and surround the sand table body, wherein the upward movement of the lifting member 20 is driven by a forward and reverse motor, and the exhibition hall staff only needs to press the forward button or the reverse button on the forward and reverse motor to realize the up and down movement of the lifting member 20. In addition, after the lifting member 20 moves to a predetermined height, the exhibition hall staff can manually pull out the rolling curtain 302 to close the top opening of the annular hole 201. It is obvious that compared with the prior art, it has the advantages of being able to achieve dust sealing by one person and being suitable for large-area simulated sand tables.

[0039] Furthermore, in order to realize the sliding of the lifting member 20 in the height direction of the platform 10, as shown in FIG. Figure 2 and Figure 3 As shown, the platform 10 also has an annular groove 102, which is located on the outside of the mounting portion 101. The annular groove 102 is rectangular, and the annular groove 102 extends a predetermined distance from the top surface of the platform 10 toward the bottom surface of the platform 10. The lifting member 20 is slidably disposed in the annular groove 102, and the annular groove 102 provides space for the lifting member 20 to move up and down.

[0040] In addition, if Figure 2 and Figure 3As shown, the bottom of the platform 10 also has a placement cavity 103, and the placement cavity 103 is connected to the annular slide 102. Both ends of the lifting member 20 have an extension portion 203. The display stand of the simulated sand table for environmental planning also includes a lifting drive assembly 40, and the lifting drive assembly 40 includes a forward and reverse double-headed motor 401, two transmission rods 402 and two screw rods 403. The forward and reverse double-headed motor 401 is placed in the placement cavity 103 and connected to the platform 10. The connection method includes but is not limited to bolt connection, and the forward and reverse double-headed motor 401 is connected to an external power supply. The forward and reverse double-headed motor 401 is arranged with three buttons of forward, reverse and stop. The placement cavity 103 has an entrance (not marked in the figure) corresponding to the three buttons of the forward and reverse double-headed motor 401, and the entrance is connected to the outside to facilitate the exhibition hall staff to press the corresponding buttons; the two screw rods 403 are respectively located at the two ends of the lifting member 20, and the two ends of the screw rods 403 are rotatably mounted on the platform 10 through bearings, one end of each of the transmission rods 402 is dynamically connected to the corresponding screw rod 403 in the form of a bevel gear transmission, and the other end of each of the transmission rods 402 is connected to one end of the rotating shaft of the forward and reverse double-headed motor 401 in the form of a coupling, and each of the screw rods 403 is spirally connected to the corresponding extension part 203.

[0041] It should be noted that the outer side of the lifting member 20 is fitted with the annular slide groove 102. When the forward and reverse double-headed motor 401 is powered and rotates forward or reversely, the two transmission rods 402 rotate circumferentially and drive the corresponding screw rod 403 to rotate, so that the two extensions 203 of the lifting member 20 move up and down along the corresponding screw rod 403. It should be noted that in order to ensure that the two extensions 203 move in the same direction after the corresponding screw rod 403 rotates, the two screw rods 403 rotate in opposite directions; in addition, the exhibition hall staff can realize the upward or downward movement of the lifting member 20 by making the rotating shaft of the forward and reverse double-headed motor 401 rotate forward or reverse. Since the forward and reverse double-headed motor 401 is mature in technology and widely used in the market, the specific structure of the forward and reverse double-headed motor 401 will not be described here. The forward and reverse double-headed motor 401 includes but is not limited to the forward and reverse double-headed motor disclosed in the patent document (CN110037611B).

[0042] Furthermore, in order to enable the roller shutter 302 to be normally wound on the rotating shaft 301, the winding assembly 30 also includes a torsion spring (not shown in the figure), and the two ends of the torsion spring are respectively fixedly connected to the rotating shaft 301 and the lifting member 20 by welding. When the exhibition hall staff pulls out the roller shutter 302, the torsion spring is in a deformed state.

[0043] Furthermore, in order to facilitate the exhibition hall staff to pull out the rolling curtain 302 by themselves, the rolling curtain 302 is slidably arranged on the lifting member 20, such as Figure 3 and Figure 5 As shown, both side edges of the lifting member 20 are provided with an anti-slip groove 204 , and the two side edges with the anti-slip groove 204 are arranged in parallel and vertically with the side edge of the lifting member 20 with the rotating shaft 301 , and the two side edges of the rolling curtain 302 are in contact with the corresponding groove surfaces of the anti-slip groove 204 .

[0044] Further, after the rolling curtain 302 is pulled out and one end of the rolling curtain 302 contacts the other side of the lifting member 20, in order to fix the rolling curtain 302, as shown in FIG. Figure 4 As shown, one end of the rolling curtain 302 has a bent portion 3021, and the bent portion 3021 is further implemented as a rod with a curved cross-section. The rod passes through the rolling curtain 302 and is fixedly connected to the rolling curtain 302 by bonding, tying, etc.; in addition, as Figure 6 As shown, the lifting member 20 has a snap-in groove 205 on the other side away from the rotating shaft 301 . When the rolling curtain 302 closes the top opening of the annular hole 201 , the bent portion 3021 snaps into the snap-in groove 205 to fix the position of the rolling curtain 302 .

[0045] Furthermore, in order to facilitate the exhibition hall staff to put the bent portion 3021 into the locking groove 205, as shown in FIG. Figure 6 As shown, the lifting member 20 has a notch 206 on the top of one side wall of the embedding groove 205, and the notch 206 is connected to the embedding groove 205. The lifting member 20 also includes a pressing block 207. When the pressing block 207 is placed in the notch 206 and the bending portion 3021 is located in the embedding groove 205, the pressing block 207 presses the bending portion 3021 to prevent the bending portion 3021 from escaping from the embedding groove 205.

[0046] Furthermore, in order to achieve the selective fixation of the pressing block 207, as Figure 6 As shown, the notch 206 is provided with a magnet 208 , and the pressing block 207 is made of magnetic metal, such as 20F. When the pressing block 207 is placed in the notch 206 , the pressing block 207 is attracted to the magnet 208 and the pressing block 207 presses the bending portion 3021 .

[0047] In summary, the display stand of the simulated sand table for environmental planning based on the embodiment of the present application is explained, which provides the display stand of the simulated sand table for environmental planning with advantages such as being able to be dust-proof and sealed by one person and being suitable for large-area simulated sand tables.

[0048] It is worth mentioning that in the embodiment of the present application, the display stand of the simulated sand table for environmental planning has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the display stand of the simulated sand table for environmental planning provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0049] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A display stand for a simulated sand table for environmental planning, characterized in that: The display stand of the simulated sand table for environmental planning includes A platform, the platform comprising a mounting portion for mounting a sand table body; and a lifting member, the lifting member is slidably arranged in the height direction of the platform, the lifting member has a through annular hole and makes the lifting member a closed ring, the lifting member is located outside the mounting portion, when the lifting member moves up and down, the lifting member is placed in the platform or in the hole wall of the annular hole to close the surroundings of the mounting portion; and A winding assembly includes a rotating shaft and a rolling curtain. The rotating shaft is rotatably mounted on a side wall of the lifting member. The rolling curtain is wound on the rotating shaft and slidably arranged on the lifting member. When the rotating shaft rotates, the rolling curtain closes or opens the top opening of the annular hole.

2. The display stand of the simulated sand table for environmental planning according to claim 1, characterized in that: The platform body also has an annular slide groove, which is located on the outside of the mounting portion. The annular slide groove extends a predetermined distance from the top surface of the platform body toward the bottom surface of the platform body, and the lifting member is slidably disposed in the annular slide groove.

3. The display stand of the simulated sand table for environmental planning according to claim 2, characterized in that: The bottom of the platform body also has a placement cavity, which is connected to the annular slide groove. Both ends of the lifting member have an extension portion. The display stand of the simulated sandbox for environmental planning also includes a lifting drive assembly, which includes a forward and reverse double-headed motor, two transmission rods and two screw rods. The forward and reverse double-headed motor is placed in the placement cavity and connected to the platform body. The two screw rods are respectively located at both ends of the lifting member and are rotatably installed on the platform body. The two ends of each transmission rod are respectively connected to the corresponding screw rod and one end of the rotating shaft of the forward and reverse double-headed motor. Each screw rod is spirally connected to the corresponding extension portion.

4. The display stand of the simulated sand table for environmental planning according to any one of claims 1 to 3, characterized in that: The winding assembly also includes a torsion spring, and two ends of the torsion spring are respectively fixedly connected to the rotating shaft and the lifting member.

5. The display stand of the simulated sand table for environmental planning according to claim 4, characterized in that: The two sides of the lifting member are provided with an anti-slip groove, the two sides with the anti-slip groove are arranged in parallel and vertically with the side of the lifting member provided with the rotating shaft, and the two sides of the rolling curtain are in contact with the corresponding groove surfaces of the anti-slip groove.

6. The display stand of the simulated sand table for environmental planning according to claim 5, characterized in that: One end of the rolling curtain has a bent portion, and the other side of the lifting member away from the rotating shaft has a locking groove. When the rolling curtain closes the top opening of the annular hole, the bent portion is locked in the locking groove.

7. The display stand of the simulated sand table for environmental planning according to claim 6, characterized in that: The lifting member has a notch on the top of one side wall of the embedding groove, the notch is connected to the embedding groove, and the lifting member also includes a pressing block. When the pressing block is placed in the notch and the bending portion is located in the embedding groove, the pressing block presses the bending portion.

8. The display stand of the simulated sand table for environmental planning according to claim 7, characterized in that: The notch is provided with a magnet, and when the pressing block is placed in the notch, the pressing block is attracted to the magnet.

9. The display stand of the simulated sand table for environmental planning according to claim 8, characterized in that: The mounting portion has a plurality of connection holes for connecting with the sand table body.

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