Electronic sand table for railway construction

CN224904525UActive Publication Date: 2026-10-27SHUOHUANG RAILWAY DEV
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Patent Information

Application Number
CN202522304598.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-30
Publication Date
2026-10-27
Estimated Expiration
2035-10-30

AI Technical Summary

Technical Problem

[0003]然而,传统的铁路施工电子沙盘的显示屏多平放于台面,导致观感不佳且难以供多人环绕观看,同时因其朝向角度固定,观察者只能从单一方向获取信息,这些局限性共同制约了装置的实用性与演示效果

Benefits of technology

[0025]上述铁路施工电子沙盘,通过设置方位调节组件,可利用方位调节组件的齿轮机构的传动,来使安装部以支撑部的中心轴线为旋转轴进行转动,从而可调节屏幕框架上的显示屏的方位朝向;同时,也通过设置角度调节组件,可利用角度调节组件的连杆机构与蜗杆蜗轮机构之间的配合传动,来使屏幕框架以第一连接轴为旋转轴进行转动,从而可调节屏幕框架上的显示屏的倾斜角度。上述铁路施工电子沙盘的方位朝向及倾斜角度均可调节,提升装置的观感体验及实用性。

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Abstract

The application relates to a railway construction electronic sand table. The railway construction electronic sand table comprises a base, a screen frame, an azimuth adjusting assembly and an angle adjusting assembly; the base comprises a supporting part and a mounting part, the mounting part is movably arranged above the supporting part; the screen frame is configured to mount a display screen and is hinged to the mounting part through a first connecting shaft; the azimuth adjusting assembly comprises a gear mechanism, the gear mechanism is drivingly connected between the supporting part and the mounting part, and can drive the mounting part to rotate around the central axis of the supporting part to adjust the azimuth orientation of the screen frame; the angle adjusting assembly comprises a connecting rod mechanism and a worm and gear mechanism, the connecting rod mechanism is drivingly connected between the screen frame and the worm and gear mechanism, and when the worm and gear mechanism is driven, the connecting rod mechanism can drive the screen frame to rotate around the first connecting shaft to adjust the inclination angle of the screen frame.
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Description

Technical Field

[0001] This application relates to the field of railway engineering, and in particular to an electronic sand table for railway construction. Background Technology

[0002] In railway construction, the planning and management of the construction process plays a decisive role in the quality, progress, and safety of the project. However, traditional planning and management mainly rely on two-dimensional drawings, physical sand tables, and verbal reports, which have many limitations. For example, two-dimensional drawings cannot intuitively represent complex terrain and construction scenarios, requiring staff to have high levels of professional knowledge to understand spatial relationships; while physical sand tables have a certain degree of intuitiveness, they suffer from long production cycles, high modification costs, and difficulty in dynamically simulating various changes during the construction process, thus failing to effectively guide actual construction. To solve these problems, electronic sand tables for railway construction have emerged.

[0003] However, the displays of traditional railway construction electronic sand tables are mostly placed flat on the table, resulting in poor viewing experience and making it difficult for multiple people to view them from around. At the same time, because their orientation angle is fixed, observers can only obtain information from a single direction. These limitations together restrict the practicality and demonstration effect of the device. Utility Model Content

[0004] Therefore, it is necessary to provide an electronic sand table for railway construction to address the above-mentioned problems.

[0005] An electronic sand table for railway construction includes:

[0006] The base includes a support portion and a mounting portion, wherein the mounting portion is movably disposed above the support portion;

[0007] A screen frame is configured to mount a display screen and is hinged to the mounting portion via a first connecting axis;

[0008] An orientation adjustment assembly includes a gear mechanism, which is drively connected between the support portion and the mounting portion, and is capable of driving the mounting portion to rotate about the central axis of the support portion, thereby adjusting the orientation of the screen frame; and

[0009] An angle adjustment assembly includes a linkage mechanism and a worm gear mechanism. The linkage mechanism is operatively connected between the screen frame and the worm gear mechanism. When the worm gear mechanism is in operation, the linkage mechanism can drive the screen frame to rotate about the first connecting shaft as the rotation axis, thereby adjusting the tilt angle of the screen frame.

[0010] In one embodiment, the gear mechanism includes a driving gear and a driven gear, the driving gear being rotatably disposed within the support portion and meshing with the driven gear, and the driven gear being connected to the mounting portion;

[0011] The railway construction electronic sand table also includes a first power component, which is located on the support and has a first power output shaft, and the drive gear is mounted on the first power output shaft.

[0012] In one embodiment, the railway construction electronic sand table also includes a control module and a first button;

[0013] The first button is located on the support part. The control module is electrically connected to the first power component and the first button. When the pressing operation of the first button is detected, the control module can turn the first power component on or off.

[0014] In one embodiment, the worm gear mechanism includes a worm and a worm wheel that are rotatably disposed within the mounting portion and mesh with each other, the worm wheel being connected to the linkage mechanism;

[0015] The railway construction electronic sand table also includes a second power component, which is located in the mounting part and has a second power output shaft, and the worm gear is mounted on the second power output shaft.

[0016] In one embodiment, the railway construction electronic sand table also includes a control module and a second button;

[0017] The second button is located on the support part. The control module is electrically connected to the second power component and the second button. When the pressing operation of the second button is detected, the control module can turn the second power component on or off.

[0018] In one embodiment, the linkage mechanism includes a first link and a second link, both having a first connecting end and a second connecting end. The first connecting end of the first link is connected to the worm gear, the second connecting end of the first link is hinged to the first connecting end of the second link, and the second connecting end of the second link is hinged to the screen frame.

[0019] In one embodiment, the bottom of the support portion is provided with a base;

[0020] The railway construction electronic sand table also includes multiple rollers, which are rotatably mounted on the base.

[0021] In one embodiment, the circumferential edge of the base protrudes laterally from the support portion and has a plurality of threaded holes;

[0022] The railway construction electronic sand table also includes several legs, which are screws adapted to the corresponding threaded holes and can be movably inserted into the corresponding threaded holes.

[0023] In one embodiment, the top of the support leg is provided with a handhold, the diameter of which is larger than the diameter of the support leg.

[0024] In one embodiment, the bottom of the support leg is provided with an anti-slip part, the diameter of which is larger than the diameter of the support leg.

[0025] The aforementioned electronic sand table for railway construction, by incorporating an orientation adjustment component, allows the mounting section to rotate around the central axis of the support section via a gear mechanism, thereby adjusting the orientation of the display screen on the screen frame. Simultaneously, by incorporating an angle adjustment component, the linkage mechanism and worm gear mechanism of the angle adjustment component allow the screen frame to rotate around a first connecting shaft, thereby adjusting the tilt angle of the display screen. The adjustable orientation and tilt angle of this electronic sand table for railway construction enhance the user experience and practicality of the device. Attached Figure Description

[0026] Figure 1 A schematic diagram of the structure of an electronic sand table for railway construction provided in an embodiment of this application.

[0027] Figure 2 for Figure 1 The provided electronic sand table for railway construction includes a schematic diagram of its support section, installation section, and orientation adjustment components.

[0028] Figure 3 for Figure 1 The provided schematic diagram shows the installation section, angle adjustment components, and screen frame of the electronic sand table for railway construction.

[0029] Figure 4 for Figure 1 A magnified view of a portion at point A.

[0030] The labels in the attached diagram are explained as follows:

[0031] 10. Railway construction electronic sand table; 100. Base; 110. Support; 111. Height adjustment part; 111a. Large diameter section; 111b. Small diameter section; 112. Installation part; 113. Support; 120. Installation part; 130. Base; 131. Threaded hole; 200. Screen frame; 210. First connecting shaft; 220. Movable shaft bracket; 300. Orientation adjustment assembly; 310. Gear mechanism; 311. Driving gear; 3111. First power output shaft; 312. Driven gear; 3121. First rotating column; 3122. Bearing seat; 400. Angle adjustment assembly; 410. Worm gear mechanism; 411. Worm; 4111. Mounting bracket; 412. Worm wheel; 4121. Second rotating column; 420. Linkage mechanism; 421. First connecting rod; 4211. Second connecting shaft; 422. Second connecting rod; 4221. Rotating sleeve; 500. Roller; 600. Support leg; 610. Handhold; 620. Anti-slip part; 700. First power component; 800. Second power component; 20. Display screen. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] In railway construction, the planning and management of the construction process plays a decisive role in the quality, progress, and safety of the project. However, traditional planning and management mainly rely on two-dimensional drawings, physical sand tables, and verbal reports, which have many limitations. For example, two-dimensional drawings cannot intuitively represent complex terrain and construction scenarios, requiring staff to have high levels of professional knowledge to understand spatial relationships; while physical sand tables have a certain degree of intuitiveness, they suffer from long production cycles, high modification costs, and difficulty in dynamically simulating various changes during the construction process, thus failing to effectively guide actual construction. To solve these problems, electronic sand tables for railway construction have emerged.

[0039] However, the displays of traditional railway construction electronic sand tables are mostly placed flat on the table, resulting in poor viewing experience and making it difficult for multiple people to view them from around. At the same time, because their orientation angle is fixed, observers can only obtain information from a single direction. These limitations together restrict the practicality and demonstration effect of the device.

[0040] In response, this application incorporates angle adjustment components and orientation adjustment components into the electronic sand table for railway construction, which can adjust the tilt angle and orientation of the display screen accordingly, thereby enhancing the visual experience and practicality of the device.

[0041] In one embodiment, such as Figures 1 to 3 As shown, the railway construction electronic sand table 10 includes a base 100, a screen frame 200, an orientation adjustment component 300, and an angle adjustment component 400. The base 100 includes a support portion 110 and a mounting portion 120, with the mounting portion 120 movably disposed above the support portion 110. The screen frame 200 is configured to mount the display screen 20 and is hinged to the mounting portion 120 via a first connecting shaft 210. The orientation adjustment component 300 includes a gear mechanism 310, which is drively connected to the support portion 110 and the mounting portion 120. The screen frame 200 is rotated about the central axis of the support 110 to adjust its orientation. The angle adjustment assembly 400 includes a linkage mechanism 420 and a worm gear mechanism 410. The linkage mechanism 420 is connected between the screen frame 200 and the worm gear mechanism 410. When the worm gear mechanism 410 is in operation, the linkage mechanism 420 can rotate the screen frame 200 about the first connecting shaft 210 to adjust its tilt angle.

[0042] The railway construction electronic sand table 10 of this application, by setting up an orientation adjustment component 300, can rotate the mounting part 120 about the central axis of the support part 110 through the transmission of the gear mechanism 310 of the orientation adjustment component 300, thereby adjusting the orientation of the display screen 20 on the screen frame 200. At the same time, by setting up an angle adjustment component 400, the screen frame 200 can rotate about the first connecting shaft 210 through the cooperation of the linkage mechanism 420 and the worm gear mechanism 410 of the angle adjustment component 400, thereby adjusting the tilt angle of the display screen 20 on the screen frame 200. The orientation and tilt angle of the railway construction electronic sand table 10 of this application are both adjustable, improving the visual experience and practicality of the device.

[0043] like Figure 2As shown, in one embodiment, the gear mechanism 310 includes a driving gear 311 and a driven gear 312. The driving gear 311 is rotatably disposed within the support portion 110 and meshes with the driven gear 312. The driven gear 312 is connected to the mounting portion 120. When the driving gear 311 rotates, the driven gear 312 also rotates due to its meshing with the driving gear 311, thereby driving the mounting portion 120 connected to it to rotate about the central axis of the support portion 110. The screen frame 200 on the mounting portion 120 also rotates together, thereby enabling adjustment of the orientation of the display screen 20.

[0044] Optionally, such as Figure 2 As shown, the support portion 110 has a rotatable first rotating column 3121, and a driven gear 312 is fixedly connected to the first rotating column 3121. The top of the first rotating column 3121 is connected to the mounting portion 120 through a bearing seat 3122. A first bearing may be provided between the first rotating column 3121 and the support portion 110.

[0045] Furthermore, in one embodiment, as Figure 1 As shown, the railway construction electronic sand table 10 also includes a first power component 700, which is located on the support part 110 and has a first power output shaft 3111 (see...). Figure 2 The drive gear 311 is mounted on the first power output shaft 3111. The first power component 700 can provide kinetic energy and directly drive the drive gear 311 to rotate without manual operation.

[0046] The first power component 700 can be a motor, and the housing of the motor can be fixed to the outside of the support 110.

[0047] Furthermore, in one embodiment, the railway construction electronic sand table 10 also includes a control module (not shown in the drawings) and a first button (not shown in the drawings); the first button is located on the support part 110, and the control module is electrically connected to the first power component 700 and the first button; when the pressing operation of the first button is detected, the control module can turn the first power component 700 on or off. The operator can turn on the first power component 700 by pressing the first button, and after adjusting the orientation of the display screen 20 to the preset orientation, the operator can turn off the first power component 700 by pressing the first button.

[0048] The first button can be a mechanical button or a touch screen button, and the control module can be a PLC (Programmable Logic Controller).

[0049] In one embodiment, such as Figure 3As shown, the worm gear mechanism 410 includes a worm 411 and a worm wheel 412, both rotatably disposed within the mounting portion 120 and meshing with each other. The worm wheel 412 is connected to the linkage mechanism 420. When the worm 411 rotates, the worm wheel 412 meshing with the worm 411 also rotates, thereby causing the linkage mechanism 420 to perform a corresponding action, which in turn drives the screen frame 200 to rotate around the connecting shaft.

[0050] Optionally, the mounting section 120 is provided with a mounting bracket 4111, and the worm gear 411 is rotatably mounted on the mounting bracket 4111. A second bearing may be provided between the worm gear 411 and the mounting bracket 4111.

[0051] Optionally, the mounting part 120 is provided with a rotatable second rotating column 4121, and the power input ends of the worm gear 412 and the linkage mechanism 420 are both fixed to the second rotating column 4121. A third bearing may be provided between the second rotating column 4121 and the mounting part 120.

[0052] Furthermore, in one embodiment, as Figure 3 As shown, the railway construction electronic sand table 10 also includes a second power component 800, which is located within the mounting section 120 and has a second power output shaft. The worm gear 411 is mounted on the second power output shaft. The second power component 800 can provide kinetic energy and directly drive the worm gear 411 to rotate without manual operation.

[0053] The second power component 800 can be an electric motor.

[0054] Furthermore, in one embodiment, the railway construction electronic sand table 10 also includes a second button (not shown in the drawings); the second button is located on the support part 110, and the control module is electrically connected to the second power component 800 and the second button; when the pressing operation of the second button is detected, the control module can turn the second power component 800 on or off. The operator can turn on the second power component 800 by pressing the first button, and after adjusting the tilt angle of the display screen 20 to the preset angle, the operator can turn off the second power component 800 by pressing the second button.

[0055] The second button can be a mechanical button or a touch screen button.

[0056] See also Figure 3In one embodiment, the linkage mechanism 420 may include a first link 421 and a second link 422. Both the first link 421 and the second link 422 have a first connecting end and a second connecting end. The first connecting end of the first link 421 is connected to the worm gear 412 via a second rotating column 4121. The second connecting end of the first link 421 is hinged to the first connecting end of the second link 422. The second connecting end of the second link 422 is hinged to the screen frame 200. When the operator opens the second power component 800, causing the worm gear 411 to drive the worm gear 412 to rotate, the first link 421, being connected to the worm gear 412, also rotates, thereby transmitting power to the second link 422. This causes the second link 422 to swing or rotate accordingly, thereby driving the screen frame 200 to rotate around the first connecting shaft 210 as the rotation axis, thus adjusting the tilt angle of the display screen 20.

[0057] Optionally, such as Figure 3 As shown, the first connecting end of the first connecting rod 421 is fixed to the second rotating column 4121, and the second connecting end of the first connecting rod 421 is rotatably connected to the first connecting end of the second connecting rod 422 through the second connecting shaft 4211.

[0058] Optionally, such as Figure 3 As shown, the second connecting end of the second connecting rod 422 is provided with a rotating sleeve 4221, and the screen frame 200 is provided with a movable shaft frame 220. The rotating sleeve 4221 and the movable shaft frame 220 are rotatably connected.

[0059] In one embodiment, the height of the support portion 110 of the base 100 is adjustable. The height of the base 100 can be adjusted as needed, further improving the usability and applicability of the device.

[0060] See Figure 1 The support portion 110 has a height adjustment portion 111 and a mounting portion 112. The mounting portion 112 mainly mounts the orientation adjustment component 300. The height adjustment portion 111 is mainly used to adjust the height of the support, and it may include a large-diameter section 111a and a small-diameter section 111b. The small-diameter section 111b can be axially slidably assembled with the large-diameter section 111a. The small-diameter section 111b is connected to the mounting portion 112 of the support portion 110 through a support 113. The height of the support portion 110 can be adjusted by axially moving the small-diameter section 111b.

[0061] Optionally, the dimensions of the small-diameter section 111b of the support 110, the bracket 113, the mounting part 112 and the mounting part 120, and the screen frame 200 increase sequentially. Here, the dimensions can refer to the width, length, or diameter.

[0062] In one example, the railway construction electronic sand table 10 also includes a third power unit (not shown in the figure) and a third button (not shown in the figure); the third power unit is located in the large-diameter section 111a and can drive the small-diameter section 111b to move axially; the control module is electrically connected to the third power unit and the third button, and can turn the third power unit on or off when the pressing operation of the third button is detected.

[0063] The third power component can be a power cylinder (such as a pneumatic cylinder, hydraulic cylinder, etc.), and the piston rod of the power cylinder is connected to the small diameter section 111b; the third button is a mechanical button or a touch screen button.

[0064] See Figure 1 In one embodiment, the bottom of the support 110 is provided with a base 130; the railway construction electronic sand table 10 also includes a plurality of rollers 500, which are rotatably mounted on the base 130. The rolling of the rollers 500 facilitates the operator to carry and move the entire device, avoiding the time and effort required for the operator to move the device.

[0065] The number of rollers (500) can be set according to requirements, such as 2, 3, etc. Figure 1 The application does not impose specific limitations on the number of four or more devices shown, as long as they can effectively move the device.

[0066] To prevent the railway construction electronic sand table 10 from shifting its position after reaching its destination, in one embodiment, such as... Figure 4 As shown, the circumferential edge of the base 130 has a lateral protruding support portion 110 and several threaded holes 131. The railway construction electronic sand table 10 also includes several legs 600, each leg being a screw adapted to a corresponding threaded hole 131 and movably inserted into the corresponding threaded hole 131. When the railway construction electronic sand table 10 reaches its destination, each leg 600 can be inserted into the corresponding threaded hole 131 in sequence, and each leg 600 can be screwed in sequence until each leg 600 can be firmly attached to the ground, thereby improving the stability of the device.

[0067] The number of support legs 600 is the same as the number of threaded holes 131, meaning they correspond one-to-one. The number of support legs 600 can be 1, 2, 3, 4, or more; this application does not impose specific limitations here, as long as it can effectively keep the device stable.

[0068] Optionally, such as Figure 4 As shown, the top of the outrigger 600 is provided with a handle 610, the diameter of which is larger than the diameter of the outrigger 600. The handle 610 facilitates the turning of the outrigger 600. The outer periphery of the handle 610 may be provided with several anti-slip protrusions. These anti-slip protrusions facilitate the operator's grip.

[0069] Optionally, such as Figure 4 As shown, the bottom of the support leg 600 may be provided with an anti-slip part 620, the diameter of which is larger than the diameter of the support leg 600. The anti-slip part 620 increases the friction between the support leg 600 and the ground, allowing the support leg 600 to fit more closely to the ground. The anti-slip part 620 can be a rubber pad.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electronic sand table for railway construction, characterized in that, include: The base includes a support portion and a mounting portion, wherein the mounting portion is movably disposed above the support portion; A screen frame is configured to mount a display screen and is hinged to the mounting portion via a first connecting axis; The orientation adjustment component includes a gear mechanism, which is connected between the support and the mounting part and can drive the mounting part to rotate about the central axis of the support to adjust the orientation of the screen frame. as well as An angle adjustment assembly includes a linkage mechanism and a worm gear mechanism. The linkage mechanism is operatively connected between the screen frame and the worm gear mechanism. When the worm gear mechanism is in operation, the linkage mechanism can drive the screen frame to rotate about the first connecting shaft as the rotation axis, thereby adjusting the tilt angle of the screen frame.

2. The electronic sand table for railway construction according to claim 1, characterized in that, The gear mechanism includes a driving gear and a driven gear. The driving gear is rotatably disposed in the support portion and meshes with the driven gear. The driven gear is connected to the mounting portion. The railway construction electronic sand table also includes a first power component, which is located on the support and has a first power output shaft, and the drive gear is mounted on the first power output shaft.

3. The electronic sand table for railway construction according to claim 2, characterized in that, The railway construction electronic sand table also includes a control module and a first button; The first button is located on the support part. The control module is electrically connected to the first power component and the first button. When the pressing operation of the first button is detected, the control module can turn the first power component on or off.

4. The electronic sand table for railway construction according to claim 1, characterized in that, The worm gear mechanism includes a worm and a worm wheel that are rotatably disposed in the mounting part and mesh with each other, and the worm wheel is connected to the linkage mechanism. The railway construction electronic sand table also includes a second power component, which is located in the mounting part and has a second power output shaft, and the worm gear is mounted on the second power output shaft.

5. The electronic sand table for railway construction according to claim 4, characterized in that, The railway construction electronic sand table also includes a control module and a second button; The second button is located on the support part. The control module is electrically connected to the second power component and the second button. When the pressing operation of the second button is detected, the control module can turn the second power component on or off.

6. The electronic sand table for railway construction according to claim 4, characterized in that, The linkage mechanism includes a first link and a second link, each having a first connecting end and a second connecting end. The first connecting end of the first link is connected to the worm gear, the second connecting end of the first link is hinged to the first connecting end of the second link, and the second connecting end of the second link is hinged to the screen frame.

7. The railway construction electronic sand table according to any one of claims 1 to 6, characterized in that, The bottom of the support is provided with a base; The railway construction electronic sand table also includes multiple rollers, which are rotatably mounted on the base.

8. The electronic sand table for railway construction according to claim 7, characterized in that, The circumferential edge of the base protrudes laterally from the support portion and has several threaded holes; The railway construction electronic sand table also includes several legs, which are screws adapted to the corresponding threaded holes and can be movably inserted into the corresponding threaded holes.

9. The electronic sand table for railway construction according to claim 8, characterized in that, The top of the support leg is provided with a handle, the diameter of which is larger than the diameter of the support leg.

10. The electronic sand table for railway construction according to claim 8, characterized in that, The bottom of the support leg is provided with an anti-slip part, the diameter of which is larger than the diameter of the support leg.