Rotary screen layering module, rotary screen and rotary screen repair method

Abstract

The application discloses a rotating screen layered module, a rotating screen and a rotating screen maintenance method, and belongs to the technical field of rotating screens, and aims to overcome the defects of low maintenance efficiency and poor expansion adaptability of the existing rotating screen. The rotating screen layered module has a standardized layered module with independent driving, control and display functions. The modules are quickly stacked and fixed through a mechanical plug-in pairing relationship of the end portions of the butt joints, and power supply and communication are completed through an electrical connection pairing relationship of upper and lower butt joints. In addition, each module is internally provided with an independent motor and a control module, and the driving box body and the display screen are independently rotated relative to the butt joint. Based on the modular architecture, the scheme realizes independent disassembly and assembly of the single-layer module without overall disassembly, and the number of screen layers can be flexibly increased or reduced according to scene requirements.

Description

Technical Field

[0001] This invention belongs to the field of rotating screen technology, and relates to rotating screen layered modules, rotating screens, and rotating screen repair methods. Background Technology

[0002] As the demand for visual presentation continues to upgrade in scenarios such as creative displays, cultural and tourism landmarks, and commercial complexes, mechanical rotating screens, as a new type of display device that combines dynamic visual impact with space utilization, are widely used in various scenarios around the world, such as exhibition booths, commercial traffic generation, and immersive exhibition halls.

[0003] Chinese patent document discloses a rotating tower invention patent, authorization announcement number CN215734228U. The rotating tower includes a base and an antenna layer. A screen layer is disposed between the base and the antenna layer. A support column is disposed inside the base, and a rotating component is disposed on the support column. The screen layer is fixedly disposed on the rotating component. The screen layer is provided in multiple groups, each group of screen layers is fixed on a corresponding rotating component, and the screen layers rotate independently of each other. There are three groups of screen layers, each group is provided with three rotating screens, which constitute the main structure of the rotating screen layer. Each layer can rotate freely 360 degrees. Each screen layer is equipped with at least three display screens. With the rotation, it can realize various creative display effects such as single-screen display and multi-screen interaction. At the same time, the device integrates antenna communication function and can be used as an urban signal tower and advertising display carrier.

[0004] While the above solution achieves the dynamic display function of independent rotation of multiple screens, it still has the following obvious shortcomings in practical applications: First, the maintenance is inconvenient and the fault repair efficiency is low. This rotating tower adopts an integrated structure, with the drive motor, transmission gears, bearings, and other core rotating components embedded inside the support column. Each screen layer is assembled using the same fixed support column, and the internal wiring is laid along the inside of the support column. When any rotating mechanism or display component malfunctions, the entire tower must be disassembled layer by layer to remove the internal wiring before repairs can be carried out, making independent disassembly and replacement of individual modules impossible. This structure not only makes on-site maintenance difficult and time-consuming, but also makes it virtually impossible to quickly repair the equipment on-site in scenarios such as overseas exhibitions or remote outdoor locations where factory repairs are difficult. This severely impacts the normal use of the equipment.

[0005] Secondly, its scalability and adaptability are insufficient, limiting its application scenarios. The rotating tower's screen layer count and support column length are both fixed and integrated, making it impossible to flexibly increase or decrease the number of screen layers according to the actual display needs of different scenarios, nor can it be spliced ​​and combined with display modules of other specifications. Furthermore, its overall structure is a fixed tower form, primarily suitable for urban outdoor public scenarios, and difficult to adapt to the installation needs of diverse spaces such as indoor exhibition halls and trade fair booths, resulting in very limited scenario adaptability. Summary of the Invention

[0006] This invention addresses the problems existing in the prior art by proposing a rotating screen layered module, a rotating screen, and a rotating screen repair method, aiming to overcome the shortcomings of low repair efficiency and poor expandability of existing rotating screens.

[0007] This invention is implemented as follows: A rotating screen layering module is characterized by comprising a docking shaft, a housing rotatably connected to the docking shaft, and a display screen fixed to the housing. The lower end and the upper end of the docking shaft have a fixed mating relationship through insertion. The lower end of the docking shaft is provided with a lower docking device, and the upper end of the docking shaft is provided with an upper docking device. The upper docking device and the lower docking device have a mating relationship through docking to form an electrical connection. The rotating screen layering module includes a motor and a control module. The control module controls the motor to drive the housing to rotate relative to the docking shaft.

[0008] A gear disk is fixed on the docking shaft, the motor is fixed on the housing, an output gear is fixed on the output shaft of the motor, and the output gear and the gear disk are connected in a transmission connection.

[0009] An initial position sensor is provided between the housing and the gear disk. The initial position sensor is connected to the control module so that when the initial position sensor is aligned, the control module determines that the housing is in an initial angular position.

[0010] The docking shaft is a through shaft running vertically. The upper end of the docking shaft has an enlarged cavity, and the bottom of the enlarged cavity has a first step. The upper docking device has a laterally protruding first convex ring. The upper docking device is inserted into the docking shaft and the first convex ring abuts against the first step. The lower end of the docking shaft has a reduced diameter section, and the upper end of the reduced diameter section has a second step; The lower connector has a second convex ring that protrudes laterally. The lower connector is inserted into the docking shaft and the second convex ring abuts against the lower edge of the docking shaft.

[0011] The upper end of the docking shaft is provided with a first threaded hole, and the upper docking device has a first positioning hole corresponding to the first threaded hole. The upper docking device is fixed by fastening screws fitted into the first threaded hole and the first positioning hole. The lower end of the docking shaft is provided with a second threaded hole, and the lower docking device has a second positioning hole corresponding to the second threaded hole. The lower docking device is fixed by fastening screws fitted into the second threaded hole and the second positioning hole. And / or, the upper end of the docking shaft is provided with a third threaded hole, and the upper docking device has an arc-shaped spare hole corresponding to the third threaded hole.

[0012] The upper end of the docking shaft has a positioning notch, and the lower end of the docking shaft has a positioning threaded hole. A positioning screw is fixed on the positioning threaded hole, and the positioning screw and the positioning notch are paired. The lower connector has a downwardly protruding connector, and the connector head is provided with an electrical connection female groove. The upper connector has a docking groove that forms a pairing relationship with the connector, and an electrical connection plug is provided in the docking groove that forms a pairing relationship with the electrical connection female groove. The mating joint has a positioning guide groove on its side wall, and the mating groove has a positioning guide strip on its inner wall that forms a pairing relationship with the positioning guide groove. The length of the mating joint is greater than the vertical distance from the positioning threaded hole to the second step.

[0013] The lower end of the docking shaft has a fixed threaded hole, and the upper end of the docking shaft has a fixed hole that is paired with the fixed threaded hole.

[0014] There is a gap between the lower end of the upper connector and the upper end of the lower connector. The docking shaft is provided with a wire through-hole corresponding to the gap. The lower end of the upper connector and the lower connector are provided with a power line, a signal line and a network cable. The power line provides power to the motor, the control module and the display screen. The signal line provides motor control signals to the control module and the network cable provides video signals to the display screen.

[0015] A rotating screen, characterized in that it includes multiple rotating screen layered modules as described above, and also includes a base. The multiple rotating screen layered modules include a first layer module and a second layer module. The docking shaft and lower docking device of the first layer module are docked on the base. The lower end of the docking shaft of the second layer module is inserted into the upper end of the docking shaft of the first layer module. The lower docking device of the second layer module is docked with the upper docking device of the first layer module. A main control module is provided in the base. The main control module distributes video signals and motor control signals to each rotating screen layered module according to the externally input video signals and control commands.

[0016] A method for repairing a rotating screen, characterized by the following steps: When some of the rotating screen layered modules fail, the entire rotating screen layered module with the faulty component is removed. Install the new rotating screen layered module into the location of the original faulty rotating screen layered module; The control module in the new rotating screen layered module sends the motor number to the external control system; The external control system associates the motor number with the location of the corresponding rotating screen layer module.

[0017] The present invention offers the following advantages: The rotating screen layered module is a standardized layered module with independent drive, control, and display functions. Each module achieves rapid stacking and fixation through mechanical plug-in pairing at the ends of the docking shaft. Simultaneously, it utilizes the electrical connection pairing of the upper and lower docking devices to complete cascaded power supply and communication. Furthermore, each module has a built-in independent motor and control module, driving the housing and display screen to rotate autonomously relative to the docking shaft. Based on this modular architecture, the solution achieves functionally independent assembly and disassembly of single-layer modules without overall disassembly, and the ability to flexibly increase or decrease the number of screen layers according to scenario requirements. Attached Figure Description

[0018] Figure 1 A schematic diagram of a rotating screen structure for simultaneous display; Figure 2 A schematic diagram of a rotating screen structure for displaying misaligned screens; Figure 3 This is a structural diagram showing the separation of the second-layer module and the first-layer module; Figure 4 A schematic diagram of the first-angle cross-sectional structure after the first-layer module and the second-layer module are assembled; Figure 5 A schematic diagram of the second-angle cross-sectional structure after the first-layer module and the second-layer module are assembled; Figure 6 This is a schematic diagram of the docking shaft structure; Figure 7 This is a schematic diagram of the first angle exploded structure of the upper and lower docking devices; Figure 8 This is a schematic diagram of the second-angle exploded structure of the upper and lower docking devices.

[0019] Figure labeling: 10, First layer module; 20, Second layer module; 30, Third layer module; 40, Base; 100, Connecting shaft; 110, Gear disk; 120, Expanding cavity; 121, First step; 122, First threaded hole; 123, Positioning notch; 124, Fixing hole; 125, Third threaded hole; 130, Reduced diameter section; 131, Second step; 132, Second threaded hole; 133, Positioning threaded hole; 134, Fixing threaded hole; 140, Fixing screw; 150. 200. Cable entry port; 210. Housing; 220. Output gear; 230. Reduction gear; 300. Initial position sensor; 300. Display screen; 400. Lower connector; 410. Second convex ring; 420. Connector; 421. Electrical connection female groove; 422. Positioning guide groove; 430. Second positioning hole; 500. Upper connector; 510. First convex ring; 520. Connecting groove; 521. Electrical connection plug; 522. Positioning guide strip; 530. First positioning hole; 540. Fastening screw. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] This embodiment provides a rotating screen, such as Figure 1-8 As shown, it includes multiple rotating screen layered modules and a base 40. Figure 1 and Figure 2 The rotating screen displays ten layers of rotating screen modules, each with the same structure and function. The ten layers of rotating screen modules include a first layer module 10, a second layer module 20, and a third layer module 30 connected sequentially from bottom to top, wherein the lower end of the docking shaft 100 of the first layer module 10 is inserted into the base 40.

[0022] like Figure 4-8 As shown, the rotating screen layering module includes a docking shaft 100, a housing 200 rotatably connected to the docking shaft 100, and a display screen 300 fixed to the housing 200. The lower end and the upper end of the docking shaft 100 have a plug-in fixed pairing relationship, that is, the lower end of the docking shaft 100 can be plugged into and fixed to the upper end of the docking shaft 100 of the next layer rotating screen layering module, and the upper end of the docking shaft 100 can be plugged into and fixed to the docking shaft 100 of the previous layer rotating screen layering module. For example, in this embodiment, the lower end of the docking shaft 100 of the second layer module 20 is plugged into and fixed to the upper end of the docking shaft 100 of the first layer module 10, and the upper end of the docking shaft 100 of the second layer module 20 is plugged into and fixed to the lower end of the docking shaft 100 of the third layer module 30.

[0023] The lower end of the docking shaft 100 is provided with a lower docking device 400, and the upper end of the docking shaft 100 is provided with an upper docking device 500. The upper docking device 500 and the lower docking device 400 are paired to form an electrical connection. For example, the lower docking device 400 of the second layer module 20 docks with the upper docking device 500 of the first layer module 10, and the upper docking device 500 of the second layer module 20 docks with the lower docking device 400 of the third layer module 30. The rotating screen layering module includes a motor and a control module. The control module controls the motor to drive the housing 200 to rotate relative to the docking shaft 100.

[0024] The traditional integrated tower structure is deconstructed into several standardized, layered modules with independent drive, control, and display functions. These modules are quickly stacked and fixed via mechanical plug-in connections at the ends of the docking shaft 100. Simultaneously, cascaded power supply and communication are achieved through electrical connections between the upper and lower docking devices. Each module has a built-in independent motor and control module, driving the housing 200 and display screen 300 to rotate autonomously relative to the docking shaft 100. Based on this modular architecture, the solution achieves independent assembly and disassembly of single-layer modules without overall disassembly, and allows for flexible addition or reduction of screen layers according to scenario requirements. On one hand, it completely eliminates the drawbacks of traditional structures requiring layer-by-layer wiring disassembly for maintenance, simplifying on-site fault repair to the rapid plug-and-play replacement of a single faulty module, significantly reducing downtime in scenarios such as overseas exhibitions and remote outdoor locations. On the other hand, it breaks through the limitations of fixed tower shape and number of layers, enabling the equipment to flexibly adapt to diverse spaces from indoor exhibition halls and temporary booths to outdoor landmarks, significantly improving the product's versatility and scalability.

[0025] like Figure 4 As shown, a gear disk 110 is fixed on the docking shaft 100, the motor is fixed on the housing 200, and an output gear 210 is fixed on the output shaft of the motor. The output gear 210 and the gear disk 110 are connected in a transmission manner. The motor is not shown in the figure and is located above the output gear 210. The upper and lower ends of the docking shaft 100 are rotatably connected to the housing 200 via bearings. In this embodiment, a reduction gear 220 is provided between the output gear 210 and the gear disk 110. In other optional embodiments, the output gear 210 may also directly mesh with the gear disk 110.

[0026] like Figure 4As shown, an initial position sensor 230 is installed between the housing 200 and the gear disk 110. The initial position sensor 230 is connected to the control module so that when the initial position sensor 230 is aligned, the control module determines that the housing 200 is in the initial angular position. When all the display screens 300 of the rotating screen layering modules need to be displayed on the same plane, that is, when all the rotating screen layering modules need to be displayed on the same screen, all the rotating screen layering modules rotate to the initial angular position. The initial position sensor 230 can more accurately determine that the housing 200 is in the initial angular position, thus better ensuring the simultaneous display of all the display screens 300. The initial position sensor 230 is a photoelectric sensor, fixed inside the housing 200. A blocking component is fixed on the gear disk 110. When the blocking component rotates between the emitter and receiver of the photoelectric sensor, the control module determines that the housing 200 is in the initial position.

[0027] like Figure 5-8 As shown, the docking shaft 100 is a through shaft running vertically. The upper end of the docking shaft 100 has an enlarged cavity 120, and the bottom of the enlarged cavity 120 has a first step 121. The upper docking device 500 has a laterally protruding first protruding ring 510. The upper docking device 500 is inserted into the docking shaft 100 and the first protruding ring 510 abuts against the first step 121.

[0028] The lower end of the docking shaft 100 has a reduced diameter portion 130, and the upper end of the reduced diameter portion 130 has a second step 131. The upper end of the docking shaft 100 of the lower rotating screen layering module abuts against the second step 131 of the rotating screen layering module.

[0029] The lower connector 400 has a laterally protruding second convex ring 410, which is inserted into the connector shaft 100 and the second convex ring 410 abuts against the lower edge of the connector shaft 100. The lower connector 400 of this layer module abuts against the upper connector 500 of the lower layer module, which is beneficial for better clamping of the upper and lower connectors. The force on the connector shaft 100 is borne by the first step 121 and the upper end.

[0030] like Figure 5 , 6As shown, the upper end of the docking shaft 100 is provided with a first threaded hole 122, and the upper docking device 500 has a first positioning hole 530 corresponding to the first threaded hole 122. The upper docking device 500 is fixed by fastening screws 540 fitted into the first threaded hole 122 and the first positioning hole 530, so that the upper docking device 500 will not rotate circumferentially or move up and down relative to the docking shaft 100. The lower end of the docking shaft 100 is provided with a second threaded hole 132, and the lower docking device 400 has a second positioning hole 430 corresponding to the second threaded hole 132. The lower docking device 400 is fixed by fastening screws 540 fitted into the second threaded hole 132 and the second positioning hole 430, so that the lower docking device 400 will not rotate circumferentially or move up and down relative to the docking shaft 100.

[0031] like Figure 6 As shown, the upper end of the docking shaft 100 has a positioning notch 123, and the lower end of the docking shaft 100 has a positioning threaded hole 133. A positioning screw is fixed in the positioning threaded hole 133, and the positioning screw and the positioning notch 123 are paired. When the positioning screw is fixed in the positioning threaded hole 133, it protrudes partially from the docking shaft 100. The positioning screw can be embedded in the positioning notch 123 of the lower rotating screen layer module, ensuring that the upper and lower docking shafts 100 can be coaxially set, ensuring that the upper and lower docking shafts 100 are circumferentially fixed, and also facilitating the further fixation of the upper and lower docking shafts 100 by fixing screws 140.

[0032] like Figure 5 As shown, the lower end of the docking shaft 100 has a fixing threaded hole 134, and the upper end of the docking shaft 100 has a fixing hole 124 that is paired with the fixing threaded hole 134. A fixing screw 140 is inserted into the fixing hole 124, and the fixing screw 140 is screwed into the fixing threaded hole 134 of the upper rotating screen layer module.

[0033] like Figure 7 , 8As shown, the lower connector 400 has a downwardly protruding connector 420, which is provided with an electrical connection female groove 421. The upper connector 500 has a docking groove 520 that is paired with the connector 420. An electrical connection plug 521 is provided in the docking groove 520 and is paired with the electrical connection female groove 421. The lower end of the upper connector 500 and the lower connector 400 are provided with power lines, signal lines, and network cables. The power lines provide power to the motor, control module, and display screen 300. The signal lines provide motor control signals to the control module, and the network cables provide video signals to the display screen 300. The connector 420 has a positioning guide groove 422 on its side wall, and the inner wall of the docking groove 520 has a positioning guide strip 522 that is paired with the positioning guide groove 422. The cooperation between the positioning guide groove 422 and the positioning guide strip 522 of the lower rotating screen layer module ensures that the electrical connection female groove 421 and the electrical connection plug 521 can be accurately connected, that is, the power lines, signal lines, and network cables of the upper and lower connectors are connected accordingly. When the upper and lower connectors tend to rotate relative to each other, the positioning guide strip 522 and the positioning guide groove 422 bear the force, reducing the risk of poor contact between the electrical connection female groove 421 and the electrical connection plug 521.

[0034] Normally, the machining and assembly process of components ensures that the positioning screws and positioning notches 123 of the upper and lower docking shafts 100 are aligned, and that the positioning guides 522 and positioning guide grooves 422 of the upper and lower docking units are aligned. When factors such as machining batches cause the positioning screws and positioning notches 123 of the upper and lower rotating screen layering modules to not be aligned with the positioning guides 522 and positioning guide grooves 422 at the same time, this embodiment adopts the following solution. The upper end of the docking shaft 100 is provided with a third threaded hole 125. The upper docking device 500 has an arc-shaped spare hole corresponding to the third threaded hole 125. The length of the docking joint 420 is greater than the vertical distance from the positioning threaded hole 133 to the second step 131. At this time, the docking joint 420 and the docking groove 520 can be initially docked. The positioning guide strip 522 and the positioning guide groove 422 are initially engaged. The positioning screw cannot enter the positioning notch 123. The first threaded hole 122 and the first positioning hole 530 are discarded. Since the upper docking device 500 has not been circumferentially fixed with the docking shaft 100, the docking of the upper rotating screen layering module is rotated appropriately. Shaft 100 can be driven by the lower connector 400 to rotate the upper connector 500 relative to the shaft 100, so that the positioning screw and the positioning notch 123 are aligned. Although the first threaded hole 122 is deviated from the first positioning hole 530, the corresponding fastening screw 540 can be screwed into the third threaded hole 125 and pressed against the inner wall of the arc-shaped spare hole. The arc-shaped spare hole is strip-shaped and can accommodate the moderate deflection of the third threaded hole 125. Although the stability is not as good as fixing the fastening screw 540 to the first threaded hole 122 and the first positioning hole 530, this solution reduces the risk of assembly failure and avoids delaying maintenance time.

[0035] In other alternative embodiments, only the first threaded hole 122 and the first positioning hole 530 or the third threaded hole 125 and the arc-shaped spare hole may be provided.

[0036] like Figure 4 , 6 As shown, there is a gap between the lower end of the upper connector 500 and the upper end of the lower connector 400. The connector shaft 100 is provided with a cable pass-through port 150 corresponding to the gap, so that power cables, signal cables and network cables can pass through the cable pass-through port 150 from the connector shaft 100 into the housing 200.

[0037] like Figure 1-3 As shown, the docking shaft 100 of the first layer module 10 and the lower docking device 400 are docked on the base 40. The base 40 contains a main control module, which distributes video signals and motor control signals to each rotating screen layer module based on externally input video signals and control commands. The rotating screen can be configured as follows: Figure 1 As shown, simultaneous display means that all displays (300Hz) show the same content, similar to a single screen. Rotating the screen can also achieve this. Figure 2In the misaligned display mode, the rotating screen modules of different layers rotate to different angles to display the required content in various directions.

[0038] The repair method for rotating screens includes the following steps: Step 1: When a portion of the rotating screen layered module malfunctions, remove the entire faulty rotating screen layered module. Open the faulty rotating screen layered module and the rotating screen layered module below it, and remove the fixing screws 140 inside the faulty rotating screen layered module and the rotating screen layered module below it. This will separate the faulty rotating screen layered module from the rotating screen layered modules above and below it.

[0039] Step 2: Install the new rotating screen layer module into the position of the original faulty rotating screen layer module. First, align and insert the connector 420 and the mating groove 520, and then insert the positioning screw into the positioning notch 123. Then, install the fixing screw 140. Repeat this process for the new rotating screen layer module and the rotating screen layer modules above and below to fix the new rotating screen layer module.

[0040] When the connector 420 and the mating groove 520 are initially aligned and inserted, it is found that the positioning screw and the positioning notch 123 are misaligned. At this time, the corresponding fastening screw 540 is removed from the first threaded hole 122 and the first positioning hole 530. This allows the lower upper connector 500 to rotate relative to the lower mating shaft 100. By rotating the mating shaft 100, the lower connector 400 drives the lower upper connector 500 to rotate at an appropriate angle, so that the positioning screw and the lower positioning notch 123 are aligned. Continue to insert the mating shaft 100 into the lower mating shaft 100. After insertion, screw the fastening screw 540 into the third threaded hole 125 and press it tightly against the inner wall of the arc-shaped spare hole.

[0041] Step 3: The control module in the new rotating screen layering module sends the motor number to the external control system. Since the motor number and external control system are successfully paired under normal circumstances, no further pairing is needed; wireless transmission can be used for matching, which will not affect the subsequent display, rotation timeliness, or reliability of the rotating screen layering module. The external control system can be implemented by installing a specific control system on a computer.

[0042] Step 4: The external control system associates the motor number with the location of the corresponding rotating screen layer module.

[0043] Those skilled in the art should understand that although the embodiments of the present invention have been disclosed above, the content described is merely for the purpose of facilitating understanding of the embodiments of the present invention and is not intended to limit the embodiments of the present invention. Any person skilled in the art to which the embodiments of the present invention pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the embodiments of the present invention; however, the patent protection scope of the embodiments of the present invention shall still be determined by the scope defined in the appended claims.

Claims

1. A rotating screen layered module, characterized in that, The system includes a docking shaft (100), a housing (200) rotatably connected to the docking shaft (100), and a display screen (300) fixed to the housing (200). The lower end and the upper end of the docking shaft (100) are connected in a fixed mating relationship. The lower end of the docking shaft (100) is provided with a lower docking device (400), and the upper end of the docking shaft (100) is provided with an upper docking device (500). The upper docking device (500) and the lower docking device (400) are connected in a mating relationship to form an electrical connection. The rotating screen layering module includes a motor and a control module. The control module controls the motor to drive the housing (200) to rotate relative to the docking shaft (100).

2. The rotating screen layering module according to claim 1, characterized in that, A gear disk (110) is fixed on the docking shaft (100), the motor is fixed on the housing (200), and an output gear (210) is fixed on the output shaft of the motor. The output gear (210) and the gear disk (110) are connected in a transmission.

3. The rotating screen layering module according to claim 2, characterized in that, An initial position sensor (230) is provided between the housing (200) and the gear disk (110). The initial position sensor (230) is connected to the control module so that when the initial position sensor (230) is aligned, the control module determines that the housing (200) is in the initial angular position.

4. The rotating screen layering module according to claim 1, characterized in that, The docking shaft (100) is a through shaft running vertically. The upper end of the docking shaft (100) has an enlarged cavity (120). The bottom of the enlarged cavity (120) has a first step (121). The upper docking device (500) has a laterally protruding first convex ring (510). The upper docking device (500) is inserted into the docking shaft (100) and the first convex ring (510) abuts against the first step (121). The lower end of the docking shaft (100) has a reduced diameter portion (130), and the upper end of the reduced diameter portion (130) has a second step (131). The lower connector (400) has a laterally protruding second protruding ring (410), the lower connector (400) is inserted into the docking shaft (100) and the second protruding ring (410) abuts against the lower edge of the docking shaft (100).

5. The rotating screen layering module according to claim 1, characterized in that, The upper end of the docking shaft (100) is provided with a first threaded hole (122), and the upper docking device (500) has a first positioning hole (530) corresponding to the first threaded hole (122). The upper docking device (500) is fixed by fastening screws (540) fitted into the first threaded hole (122) and the first positioning hole (530). The lower end of the docking shaft (100) is provided with a second threaded hole (132), and the lower docking device (400) has a second positioning hole (430) corresponding to the second threaded hole (132). The lower docking device (400) is fixed by fastening screws (540) fitted into the second threaded hole (132) and the second positioning hole (430). And / or, the upper end of the docking shaft (100) is provided with a third threaded hole (125), and the upper docking device (500) has an arc-shaped spare hole corresponding to the third threaded hole (125).

6. The rotating screen layering module according to claim 1, characterized in that, The upper end of the docking shaft (100) has a positioning notch (123), and the lower end of the docking shaft (100) has a positioning threaded hole (133). A positioning screw is fixed on the positioning threaded hole (133), and the positioning screw and the positioning notch (123) have a pairing relationship. The lower connector (400) has a downwardly protruding connector (420), and the connector (420) is provided with an electrical connection female groove (421). The upper connector (500) has a docking groove (520) that forms a pairing relationship with the connector (420). The docking groove (520) is provided with an electrical connection plug (521) that forms a pairing relationship with the electrical connection female groove (421). The mating joint (420) has a positioning guide groove (422) on its side wall, and the mating groove (520) has a positioning guide strip (522) on its inner wall, which forms a pairing relationship with the positioning guide groove (422). The length of the mating joint (420) is greater than the vertical distance from the positioning threaded hole (133) to the second step (131).

7. The rotating screen layering module according to claim 1, characterized in that, The lower end of the docking shaft (100) has a fixed threaded hole (134), and the upper end of the docking shaft (100) has a fixed hole (124) that is paired with the fixed threaded hole (134).

8. The rotating screen layering module according to claim 1, characterized in that, There is a gap between the lower end of the upper connector (500) and the upper end of the lower connector (400). The docking shaft (100) is provided with a wire pass-through port (150) corresponding to the gap. The lower end of the upper connector (500) and the lower connector (400) are provided with power lines, signal lines and network cables. The power lines provide power to the motor, control module and display screen (300). The signal lines provide motor control signals to the control module. The network cables provide video signals to the display screen (300).

9. A rotating screen, characterized in that, The system includes multiple rotating screen layering modules as described in any one of claims 1-8, and also includes a base (40). The multiple rotating screen layering modules include a first layer module (10) and a second layer module (20). The docking shaft (100) and the lower docking device (400) of the first layer module (10) are docked on the base (40). The lower end of the docking shaft (100) of the second layer module (20) is inserted into the upper end of the docking shaft (100) of the first layer module (10). The lower docking device (400) of the second layer module (20) is docked with the upper docking device (500) of the first layer module (10). The base (40) is provided with a main control module. The main control module distributes video signals and motor control signals to each rotating screen layering module according to the externally input video signals and control commands.

10. A method for repairing a rotating screen, characterized in that, Includes the following steps: When some of the rotating screen layered modules fail, the entire rotating screen layered module with the faulty component is removed. Install the new rotating screen layered module into the location of the original faulty rotating screen layered module; The control module in the new rotating screen layered module sends the motor number to the external control system; The external control system associates the motor number with the location of the corresponding rotating screen layer module.

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