Sand table for layout planning

Abstract

The utility model is applicable to the technical field of sand tables, and provides a sand table for layout planning, which comprises a base provided with an accommodating cavity inside, a plurality of sand table plates arranged at the top of the accommodating cavity, bottom plates arranged at two ends of the bottom surface of each sand table plate, and bent plates connected to the bottom ends of the bottom plates; the protection assembly comprises supporting shafts, the supporting shafts are arranged on the two sides of the sand table plate, a plurality of rotating shaft sleeves are rotationally arranged on the supporting shafts, two moving bases and driven gears are arranged on the rotating shaft sleeves, cross rod sets are arranged between the moving bases and the bending plates, a forward rotating shaft and a reverse rotating shaft are rotationally arranged on one side of each supporting shaft, and a reciprocating base is arranged on the forward rotating shaft; the reciprocating seat is rotationally provided with a sleeve which is arranged outside the reversing shaft in a sliding and sleeving mode, the sleeve is provided with a driving gear, a winding roller is rotationally arranged in the containing cavity, and a protection cover connected with the reciprocating seat is wound around the winding roller. Therefore, the sand table board can be automatically folded, unfolded and protected, the service life of the sand table board is prolonged, and the sand table board can be prevented from being damaged due to overlarge dead weight.

Description

Technical Field

[0001] The utility model relates to the technical field of sand tables, in particular to a sand table for layout planning. Background Art

[0002] A sand table is a terrain model made of sand or other materials. It is made according to a topographic map, an aerial photograph or the actual terrain at a certain scale. The application scenarios of sand tables are diverse. In some application scenarios with high precision requirements for sand tables, it is necessary to protect the sand table in an idle state.

[0003] There are various protection devices for sand tables in the existing devices. For example, a 3D display sand table for cultural tourism with the publication number of CN212990482U includes a protection box with an open top. Both sides of the opening of the protection box are hinged with box doors. A sand table platform and a telescopic mechanism for driving the sand table platform to lift are arranged inside the protection box. The telescopic mechanism includes a scissor arm and an electric telescopic rod for driving the scissor arm. The scissor arm includes a first fork rod and a second fork rod hinged to each other. The first fork rod close to the inner bottom wall of the protection box is hinged to the electric telescopic rod, and the second fork rod close to the inner bottom of the protection box is hinged to the push rod of the electric telescopic rod. It can protect the sand table. However, in the above device, the sand table is a whole. When the area of the sand table is large and the weight is heavy, it is easy for the sand table to fall during the lifting process. Moreover, the box doors in the above device need to be opened and closed manually, and the difficulty of opening and closing the box doors will also increase when the area of the sand table is large, so it is still inconvenient to use.

[0004] In summary, it is obvious that there are inconveniences and defects in the prior art in actual use, so it is necessary to improve it. Content of the Utility Model

[0005] Aiming at the above defects, the purpose of the utility model is to provide a sand table for layout planning, which has a simple structure and is easy to use. It can automatically store and protect the sand table board, extend the service life of the sand table board, and can also avoid damage to the device caused by the excessive self-weight of the sand table board.

[0006] To achieve the above object, the utility model provides a sand table for layout planning, comprising: a base, which is provided with a receiving cavity therein, the top of the receiving cavity is provided with a plurality of sand table plates, both ends of the bottom surface of the sand table plates are provided with bottom plates, and the bottom ends of the bottom plates are all connected with bent plates; a protection component, which comprises a support shaft and a rotating shaft sleeve, support shafts are arranged on both sides of the sand table plates, a plurality of rotating shaft sleeves are rotatably arranged on the support shafts, two moving seats, two circulating grooves and driven gears are arranged on the rotating shaft sleeves, cross rod groups are arranged between the moving seats and the bent plates, a positive rotating shaft and a reverse rotating shaft are rotatably arranged on one side of the support shafts, a reciprocating seat and a reciprocating groove are arranged on the positive rotating shaft, a sleeve which is slidably sleeved outside the reverse rotating shaft is rotatably arranged on the reciprocating seat, a driving gear is arranged on the sleeve, a winding roller is rotatably arranged in the receiving cavity, and a protective cover connecting the reciprocating seat is wound on the winding roller.

[0007] According to the sand table for layout planning of the utility model, positive shaft sleeves are rotatably sleeved on the positive rotating shafts, positive ratchets are arranged on the positive shaft sleeves, positive pawls are rotatably arranged on the positive rotating shafts, reverse shaft sleeves are rotatably sleeved on the reverse rotating shafts, reverse ratchets are arranged on the reverse shaft sleeves, and reverse pawls are rotatably arranged on the reverse rotating shafts.

[0008] According to the sand table for layout planning of the utility model, a driving member is arranged on the side wall of the receiving cavity, and a belt is arranged between the output shaft of the driving member, the positive shaft sleeve and the reverse shaft sleeve.

[0009] According to the sand table for layout planning of the utility model, a connecting shaft is rotatably arranged below the reverse rotating shaft, a thread is arranged on the connecting shaft, a threaded hole is arranged on the reciprocating seat, an adjusting gear is arranged on the connecting shaft, a sliding plate is arranged below the bent plate, the sliding plate is slidably arranged on a fixing plate, the fixing plate is fixedly connected with the side wall of the receiving cavity, and racks are arranged on the sliding plates.

[0010] According to the sand table for layout planning of the utility model, torsion springs are arranged at the joints of the winding roller and the side wall of the receiving cavity. When the torsion springs are in a natural state, the protective cover is completely wound on the winding roller.

[0011] According to the sand table for layout planning of the utility model, the sleeve is arranged on the side of the reciprocating seat away from the winding roller, and the driving gear is arranged at the end of the sleeve away from the reciprocating seat.

[0012] The purpose of the utility model is to provide a sand table for layout planning, and its beneficial effects are as follows:

[0013] 1. By arranging the protection component, the plurality of sand table plates can be automatically retracted, and the protective cover is driven to move synchronously during the retraction process, so as to properly protect the sand table plates, avoid damage caused by long-term exposure, and extend the service life of the sand table plates.

[0014] 2. By setting a number of sand table boards, it is not only convenient for users to transport and store, but also can avoid damage to the device caused by the excessive self-weight of the sand table board during the process of retracting and deploying the sand table board.

[0015] In summary, the beneficial effects of the present utility model are as follows: it can automatically retract, deploy and protect the sand table board, extend the service life of the sand table board, and can avoid damage to the device caused by the excessive self-weight of the sand table board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a front sectional view of the present utility model;

[0018] Figure 3 is Figure 2 a schematic structural diagram of part A of

[0019] Figure 4 is a top sectional view of the present utility model;

[0020] Figure 5 is Figure 4 an enlarged schematic structural diagram of part B of

[0021] In the figure: 1 - base, 11 - receiving cavity, 2 - sand table board, 21 - bottom plate, 22 - bent plate, 3 - protection component, 31 - support shaft, 311 - rotating shaft sleeve, 312 - moving seat, 313 - cross bar group, 314 - driven gear, 32 - positive rotating shaft, 321 - reciprocating seat, 33 - reverse rotating shaft, 331 - sleeve, 332 - driving gear, 34 - positive shaft sleeve, 35 - reverse shaft sleeve, 36 - driving part, 37 - fixing plate, 371 - sliding plate, 38 - connecting shaft, 381 - adjusting gear, 39 - winding roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further describes the present utility model in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] Refer to Figures 1 to 5 , the present utility model provides a sand table for layout planning, including a base 1, a number of sand table boards 2 and a protection component 3. A receiving cavity 11 with an open top is provided in the base 1. A number of sand table boards 2 are provided in the receiving cavity 11. Bottom plates 21 are provided on the bottom surfaces at both ends of the sand table board 2, and bent plates 22 that bend away from the sand table board 2 are provided at the ends of the bottom plates 21. A protection component 3 is provided in the receiving cavity 11.

[0024] Refer toFigures 1 to 5 , the protection component 3 includes a support shaft 31 and a rotating sleeve 311. Support shafts 31 are provided on both sides of the sand table board 2. Both ends of the support shaft 31 are connected to the side wall of the accommodation cavity 11. A number of rotating sleeves 311 are rotatably provided on the support shaft 31. A number of rotating sleeves 311 on the same support shaft 31 cooperate with the sand table board 2 one by one. Two moving seats 312 are provided on each of the rotating shaft sleeves 311. Circulation grooves are provided at both ends of the rotating shaft sleeve 311. Through holes for the rotating shaft sleeve 311 to pass through are provided on the moving seats 312. Guide posts cooperating with the circulation grooves are provided on the inner side walls of the through holes. When the rotating shaft sleeve 311 rotates unidirectionally, the two moving seats 312 on the same rotating shaft sleeve 311 move synchronously and in opposite directions. Cross bar groups 313 are rotatably provided between the moving seats 312 and the bent plates 22 (that is, the two ends of the top of the cross bar group 313 are respectively rotatably connected to the two moving seats 312 on the same rotating shaft sleeve 311, and sliders are rotatably connected to both ends of the bottom of the cross bar group 313, and the sliders are all slidably connected to the bent plates 22). Driven gears are provided in the middle of the rotating shaft sleeves 311.

[0025] See Figures 1 to 5 , positive rotating shafts 32 and reverse rotating shafts 33 are rotatably provided on the side of the support shaft 31 away from the sand table board 2. The positive rotating shaft 32 is located above the reverse rotating shaft 33. Reciprocating seats 321 are provided on the positive rotating shafts 32. Reciprocating grooves cooperating with the reciprocating seats 321 are provided on the surface of the positive rotating shaft 32 (the structure of the reciprocating groove refers to the reciprocating lead screw, and the cooperation mode between the reciprocating seat 321 and the reciprocating groove refers to that between the moving seat 312 and the circulation groove). A sleeve 331 is rotatably provided on the reciprocating seat 321. The sleeve 331 is slidably sleeved outside the reverse rotating shaft 33. The sleeve 331 is provided on the side of the reciprocating seat 321 close to the center of the positive rotating shaft 32. A driving gear 332 is connected to the end of the sleeve 331 away from the reciprocating seat 321. A winding roller 39 is provided on the side of the reciprocating seat 321 away from the driving gear 332. Both ends of the winding roller 39 are respectively rotatably connected to the side wall of the accommodation cavity 11, and torsion springs are provided at the connection between the winding roller 39 and the side wall of the accommodation cavity 11. A protective cover (the protective cover is made of soft materials such as waterproof cloth, plastic film, etc.) is wound on the winding roller 39. When the torsion spring is in the natural state, the protective cover is completely wound on the winding roller 39, and the protective cover is connected to the reciprocating seat 321.

[0026] See Figures 1 to 5 , positive shaft sleeves 34 are rotatably sleeved on one end of the positive rotating shafts 32. Positive ratchets are provided on the positive shaft sleeves 34. The positive ratchet, the positive shaft sleeve 34 and the positive rotating shaft 32 are concentric. Positively rotating pawls that can rotate unidirectionally are rotatably provided on the positive rotating shafts 32. Reverse shaft sleeves 35 are rotatably sleeved on one end of the reverse rotating shafts 33. Reverse ratchets are provided on the reverse shaft sleeves 35. The reverse ratchet, the reverse shaft sleeve 35 and the reverse rotating shaft 33 are concentric. Reverse pawls that can rotate unidirectionally are rotatably provided on the reverse rotating shafts 33. A driving member 36 is provided on the side wall of the accommodation cavity 11. A belt is provided between the output shaft of the driving member 36, the positive shaft sleeve 34 and the reverse shaft sleeve 35.

[0027] See Figures 1 to 5 Preferably, connecting shafts 38 are rotatably provided below the reverse rotation shafts 33. Both ends of the connecting shafts 38 are rotatably connected to the side walls of the accommodation cavity 11. One end of the connecting shaft 38 is provided with a thread, and the reciprocating seat 321 is provided with a threaded hole that is in threaded cooperation with the thread on the connecting shaft 38. Adjusting gears 381 are provided on the connecting shafts 38. A sliding plate 371 is provided below the bending plate 22. The sliding plate 371 is slidably arranged on the fixing plate 37. The fixing plates 37 are fixedly connected to the side walls of the accommodation cavity. A rack that meshes with the adjusting gear 381 is provided on the sliding plate 371. The sliding plate 371 can support a plurality of sand table plates 2.

[0028] See Figures 1 to 5 Preferably, the user can adjust the belt wrap angle by adding a tensioning shaft or replace the belt with a chain. The addition of the transmission gears involved is a conventional technical means for those skilled in the art. Those skilled in the art can make adaptive improvements to the belt drive in this device through common general knowledge to ensure good transmission efficiency.

[0029] See Figures 1 to 5 Preferably, the driving member 36 is a rotary motor and can provide sufficient power.

[0030] In the implementation process of the present utility model: when the user needs to retract a plurality of sand table plates 2, the driving member 36 is started, and the driving member 36 rotates forward. At this time, the positive ratchet wheel cooperates with the positive ratchet pawl, and the reverse ratchet wheel does not cooperate with the reverse ratchet pawl. The positive shaft sleeve 34 drives the positive rotation shaft 32 to rotate, and the reverse shaft sleeve 35 cannot drive the reverse rotation shaft 33 to rotate. Under the action of the reciprocating groove, the reciprocating seat 321 moves from one end of the accommodation cavity 11 to the other end. During the movement of the reciprocating seat 321, under the cooperation of the threaded hole and the thread on the connecting shaft 38, the connecting shaft 38 drives the adjusting gear 381 to rotate, so that the sliding plate 371 is disengaged from the bending plate 22. When the reciprocating seat 321 moves to the position where the driving gear 332 meshes with the closest driven gear 314, the driving member 36 rotates in reverse. At this time, the positive rotation shaft 32 does not rotate, and the reverse rotation shaft 33 drives the driving gear 332 to rotate, so that the two moving seats 312 on the same rotating shaft sleeve 311 approach each other. Under the action of the cross rod group 313, the sand table plate 2 descends into the accommodation cavity 11. During the movement of the reciprocating seat 321, the protective cover is driven to unfold. The driving member 36 rotates forward and in reverse alternately until all the sand table plates 2 are retracted into the accommodation cavity 11, and the protective cover closes the top of the accommodation cavity 11. The user can avoid interference between the protective cover and the sand table plate 2 by setting the length of the sleeve 331. This is the prior art.

[0031] The purpose of the present utility model is to provide a sand table for layout planning, and its beneficial effects are as follows:

[0032] 1. By setting up a protection component, several sand table boards can be automatically retracted, and the protective cover can be driven to move synchronously during the retraction process, so as to properly protect the sand table boards, avoid damage caused by long-term exposure, and extend the service life of the sand table boards.

[0033] 2. By setting up several sand table boards, it is not only convenient for users to transport and store, but also can avoid damage to the device caused by the excessive self-weight of the sand table boards during the retraction and deployment process.

[0034] In summary, the beneficial effects of the present utility model are as follows: it can automatically retract and protect the sand table boards, extend the service life of the sand table boards, and can also avoid damage to the device caused by the excessive self-weight of the sand table boards.

[0035] Of course, the present utility model can also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present utility model.

Claims

1. A sand table for layout planning, characterized in that, Comprising: A base, which is provided with a receiving cavity inside. A plurality of sand table plates are provided at the top of the receiving cavity. Bottom plates are provided at both ends of the bottom surface of the sand table plates, and bent plates are connected to the bottom ends of the bottom plates. A protection component, which includes a support shaft and a rotating shaft sleeve. Support shafts are provided on both sides of the sand table plate. A plurality of rotating shaft sleeves are rotatably provided on the support shafts. Two moving seats, two circulating grooves and driven gears are provided on the rotating shaft sleeves. Cross bar groups are provided between the moving seats and the bent plates. A positive rotating shaft and a reverse rotating shaft are rotatably provided on one side of the support shaft. A reciprocating seat and a reciprocating groove are provided on the positive rotating shaft. A sleeve that is slidably sleeved outside the reverse rotating shaft is rotatably provided on the reciprocating seat. A driving gear is provided on the sleeve. A winding roller is rotatably provided in the receiving cavity, and a protective cover connecting the reciprocating seat is wound on the winding roller.

2. The sand table for layout planning according to claim 1, characterized in that Positive shaft sleeves are rotatably sleeved on the positive rotating shafts, and positive ratchets are provided on the positive shaft sleeves. Positive ratchet claws are rotatably provided on the positive rotating shafts. Reverse shaft sleeves are rotatably sleeved on the reverse rotating shafts, and reverse ratchets are provided on the reverse shaft sleeves. Reverse ratchet claws are rotatably provided on the reverse rotating shafts.

3. The sand table for layout planning according to claim 2, characterized in that, A driving member is provided on the side wall of the receiving cavity. A belt is provided between the output shaft of the driving member, the positive shaft sleeve and the reverse shaft sleeve.

4. The sand table for layout planning according to claim 1, characterized in that, A connecting shaft is rotatably provided below the reverse rotating shaft. Threads are provided on the connecting shaft. A threaded hole is provided on the reciprocating seat. An adjusting gear is provided on the connecting shaft. A sliding plate is provided below the bent plate. The sliding plate is slidably provided on a fixing plate. The fixing plate is fixedly connected to the side wall of the receiving cavity. Rack teeth are provided on the sliding plate.

5. The sand table for layout planning according to claim 1, characterized in that, Torsion springs are provided at the connections between the winding roller and the side wall of the receiving cavity. When the torsion springs are in a natural state, the protective cover is completely wound on the winding roller.

6. The sand table for layout planning according to claim 1, characterized in that, The sleeve is provided on the side of the reciprocating seat away from the winding roller, and the driving gear is provided at the end of the sleeve away from the reciprocating seat.

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