Lifting turnover screen with instantaneous axial distance compensation structure

Abstract

A lifting turnover screen with an instantaneous axial distance compensation structure relates to the technical field of display performance devices and comprises a turnover screen module and a lifting arm module, the turnover screen module comprises a main truss and an LED screen, one end of the main truss is provided with a first hinge support, a first slewing bearing and a driving motor, and the other end of the main truss is provided with a second hinge support. One end of the main truss is provided with a first hinged support, a first slewing bearing and a sliding shaft, the other end of the main truss is provided with a second hinged support, a second slewing bearing and a sliding shaft, the main truss is provided with a certain number of rollers distributed in the circumferential direction and the axial direction of the sliding shaft, and the two lifting arm modules are oppositely arranged and comprise lower supports, first joint arms, second joint arms, first electric push rods and second electric push rods. According to the large-scale screen lifting and overturning device, the lifting and overturning functions of a large-scale screen are realized, and the mutual interference phenomenon caused by deflection deformation of the large-scale truss girder in the lifting process can be avoided by arranging the sliding shaft; the interference phenomenon caused by different deformation errors in different states and different errors generated in different operation states can be flexibly compensated in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of display and performing arts devices, and particularly relates to a lifting and flipping screen with an instantaneous axial distance compensation structure. Background Art

[0002] The structure of a large screen includes a truss and a display screen thereon, which is a display and performing arts device widely used indoors or outdoors. Currently, large screens are basically fixed and cannot be easily changed, or can only achieve one of the lifting and flipping functions, and cannot achieve both the lifting and flipping functions at the same time. In the existing technology, to achieve both the lifting and flipping functions at the same time, interference phenomena will occur during the lifting process due to the deflection deformation of the large truss beam, and interference phenomena will be caused by different deformation errors in different states and different errors generated in different operating states. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies of the existing technology, and provide a lifting and flipping screen with an instantaneous axial distance compensation structure, which realizes the lifting and flipping functions of a large screen. By setting a sliding shaft, it can ensure that interference phenomena will not occur during the lifting process due to the deflection deformation of the large truss beam, and can flexibly and real-time compensate for the interference phenomena caused by different deformation errors in different states and different errors generated in different operating states.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A lifting and flipping screen with an instantaneous axial distance compensation structure includes a flipping screen module and a lifting arm module. The flipping screen module includes a main truss and an LED screen. A certain number of perforated mounting and fixing seats are arranged on the outer side of the main truss, and the LED screen is fixed on the main truss through the perforated mounting and fixing seats.

[0006] One end of the main truss is provided with a first hinge support, a first slewing bearing and a driving motor. The first hinge support is fixed to the main truss through the first slewing bearing. The driving motor is installed inside the main truss, and a driving gear is arranged at its output end. A gear ring meshing with the driving gear is arranged on the first hinge support. The other end of the main truss is provided with a second hinge support, a second slewing bearing and a sliding shaft. The second hinge support is fixed to the outer end of the sliding shaft through the second slewing bearing. The inner end of the sliding shaft extends into the main truss, and a certain number of rollers are arranged on the main truss along the circumferential and axial directions of the sliding shaft. When the driving motor works, it drives the driving gear and the gear ring to rotate, and the main truss and the LED screen thereon rotate through the first slewing bearing and the second slewing bearing, realizing the flipping function of the screen.

[0007] The number of the lifting arm modules is two and they are arranged facing each other. The lifting arm module includes a lower support, a first joint arm, a second joint arm, a first electric push rod and a second electric push rod. The lower support is fixed on the base. The mounting seat at the lower end of the first joint arm is hinged to the ear seat of the lower support. The mounting seat at the upper end of the first joint arm is hinged to the mounting seat at the lower end of the second joint arm. The mounting seats at the upper ends of the two second joint arms are respectively hinged to the ear seats of the first hinge support and the second hinge support. Two lower hinge seats are arranged on the base. A middle hinge seat A and a middle hinge seat B are arranged on the first joint arm. An upper hinge seat is arranged on the second joint arm. The bottom parts of the two first electric push rods are respectively hinged to the two lower hinge seats, and the movable ends are hinged to the middle hinge seat A. The bottom of the second electric push rod is hinged to the middle hinge seat B, and the movable end is hinged to the upper hinge seat. The first joint arm and the second joint arm can be driven by the first electric push rod and the second electric push rod to realize the lifting function of the flip screen module. During the lifting process, the sliding shaft can perform axial movement between the rollers to compensate for the deformation error.

[0008] Preferably, an adjusting bolt is arranged on the mounting seat of the roller. It is used to adjust the radial position of the roller to ensure that the surface of the roller fits with the sliding shaft.

[0009] Preferably, the sliding shaft is a square shaft, and 4 groups of rollers are arranged on each surface, showing a "2x2" array distribution. The square shaft and the 4 groups of rollers have the characteristics of good circumferential rotation prevention and axial movement guiding.

[0010] Preferably, a push arm is vertically arranged in the middle of the first joint arm, and the middle hinge seat A is arranged at the outer end of the push arm.

[0011] Preferably, support arms are arranged between the two ends of the first joint arm and the outer end of the push arm to improve the structural strength. A strengthening rod can also be connected between the support arm and the first joint arm.

[0012] Preferably, a first position sensor is arranged on the first electric push rod, and a second position sensor is arranged on the second electric push rod to measure the position of the electric push rod itself and play a safety guarantee role.

[0013] Preferably, a first decorative arm is arranged outside the first joint arm, and a second decorative arm is arranged outside the second joint arm. The decorative arm is a covering shell with both ends open, playing a decorative function.

[0014] Preferably, the number of the mounting seats at both ends of the first joint arm and the second joint arm is two and they are arranged side by side. Correspondingly, the number of the ear seats of the lower support, the first hinge support and the second hinge support is two and they are arranged side by side. It has high structural strength, and a pivot shaft is installed at the hinge for connection.

[0015] Preferably, the contour of the LED screen is one of a square, a rectangle, a circle, and an ellipse. Of course, it can also be other contours, depending on the needs.

[0016] The advantages of the present utility model are as follows: 1. Realize the lifting and flipping functions of a large screen;

[0017] 2. By setting the sliding shaft, it can ensure that there is no interference phenomenon due to the deflection deformation of the large truss beam during the lifting process, and can flexibly and real-time compensate for different deformation errors in different states and different interference phenomena caused by different errors in different operating states;

[0018] 3. Avoid the overload phenomenon caused by the interference phenomenon of the mechanism operation;

[0019] 4. Can eliminate potential safety hazards to the structural equipment, and enable the lifting and flipping processes to be completed smoothly;

[0020] 5. The roller type stroke compensation instantaneous compensation mechanism can ensure the installation and lifting of large load equipment;

[0021] 6. The instantaneous compensation function of the mechanical structure simplifies the electrical control and avoids the complexity of the automatic realization of the synchronous lifting function control;

[0022] 7. By setting the position sensor, the position compensation driving program can be preset, and the position alarm signal can be set, so that the operation of the equipment has better safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Front view of the present utility model Figure 1 (The flipping screen module is in the high vertical state);

[0024] Figure 2 Front view of the present utility model Figure 2 (The flipping screen module is in the high horizontal state);

[0025] Figure 3 Front view of the present utility model Figure 3 (The flipping screen module is in the low horizontal state);

[0026] Figure 4 Structural schematic of the flipping screen module in the present utility model Figure 1 (Horizontal state);

[0027] Figure 5 For Figure 4 Cross-sectional view taken along line A-A in

[0028] Figure 6 Structural schematic of the flipping screen module in the present utility model Figure 2(Vertical state with LED screen and drive motor hidden);

[0029] Figure 7 For Figure 6 An enlarged schematic view of part B in

[0030] Figure 8 The front view of the first joint arm in the present utility model;

[0031] Figure 9 The side view of the first joint arm in the present utility model;

[0032] Figure 10 The front view of the second joint arm in the present utility model.

[0033] Description of the main component symbols in the figure:

[0034] 10. Flip screen module:

[0035] 11. Main body truss; 11.1. Holed mounting and fixing seat; 12. LED screen; 13. First hinge support; 13.1. Tooth ring; 14. First slewing bearing; 15. Drive motor; 15.1. Driving gear; 16. Second hinge support; 17. Second slewing bearing; 18. Sliding shaft; 19. Roller; 19.1. Adjusting bolt;

[0036] 20. Lifting arm module:

[0037] 21. Lower support; 22. First joint arm; 22.1. Pushing arm; 22.2. Supporting arm; 23. Second joint arm; 24. First electric push rod; 24.1. First position sensor; 25. Second electric push rod; 25.1. Second position sensor; 26. Lower hinge seat; 27. Middle hinge seat A; 28. Middle hinge seat B; 29. Upper hinge seat; 210. First decorative arm; 211. Second decorative arm;

[0038] 100. Base. Specific implementation mode

[0039] In order to describe the present utility model more clearly, the present utility model will be further described below with reference to the accompanying drawings.

[0040] Embodiment 1: As Figures 1 - 3 shown, a lifting and flipping screen with an instantaneous axial distance compensation structure includes a flip screen module 10 and a lifting arm module 20.

[0041] Combining Figures 4 - 7 shown, the flip screen module 10 includes a main body truss 11 and an LED screen 12. A certain number of holed mounting and fixing seats 11.1 are arranged on the outer side of the main body truss 11, and the LED screen 12 is fixed on the main body truss 11 through the holed mounting and fixing seats 11.1.

[0042] One end of the main truss 11 is provided with a first hinge support 13, a first slewing bearing 14 and a driving motor 15. The first hinge support 13 is fixed to the main truss 11 through the first slewing bearing 14. The driving motor 15 is installed inside the main truss 11, and a driving gear 15.1 is arranged at its output end. A gear ring 13.1 meshing with the driving gear 15.1 is arranged on the first hinge support 13;

[0043] The other end of the main truss 11 is provided with a second hinge support 16, a second slewing bearing 17 and a sliding shaft 18. The second hinge support 16 is fixed to the outer end of the sliding shaft 18 through the second slewing bearing 17. The inner end of the sliding shaft 18 extends into the main truss 11, and a certain number of rollers 19 are arranged on the main truss 11 along the circumferential and axial directions of the sliding shaft 18.

[0044] Combined with Figures 8 - 10 As shown in the figure, the number of the lifting arm modules 20 is two and they are arranged facing each other. The lifting arm module 20 includes a lower support 21, a first articulated arm 22, a second articulated arm 23, a first electric push rod 24 and a second electric push rod 25. The lower support 21 is fixed on the base 100. The mounting seat at the lower end of the first articulated arm 22 is hinged to the ear seat of the lower support 21. The mounting seat at the upper end of the first articulated arm 22 is hinged to the mounting seat at the lower end of the second articulated arm 23. The mounting seats at the upper ends of the two second articulated arms 23 are respectively hinged to the ear seats of the first hinge support 13 and the second hinge support 16.

[0045] Two lower hinge seats 26 are arranged on the base 100. A middle hinge seat A 27 and a middle hinge seat B 28 are arranged on the first articulated arm 22. An upper hinge seat 29 is arranged on the second articulated arm 23. The bottoms of the two first electric push rods 24 are respectively hinged to the two lower hinge seats 26, and the movable ends are hinged to the middle hinge seat A 27. The bottom of the second electric push rod 25 is hinged to the middle hinge seat B 28, and the movable end is hinged to the upper hinge seat 29.

[0046] Embodiment 2: As Figure 7 shown, on the basis of Embodiment 1, an adjusting bolt 19.1 is arranged on the mounting seat of the roller 19.

[0047] Combined with Figure 5 shown, the sliding shaft 18 is a square shaft, and 4 groups of rollers 19 are arranged on each surface, and are distributed in a "2x2" array.

[0048] Embodiment 3: As Figures 8 - 9 shown, on the basis of Embodiment 1 or Embodiment 2, a pushing arm 22.1 is vertically arranged in the middle of the first articulated arm 22, and the middle hinge seat A 27 is arranged at the outer end of the pushing arm 22.1.

[0049] Wherein, a support arm 22.2 is disposed between two ends of the first joint arm 22 and the outer end of the push arm 22.1.

[0050] Embodiment 4: As Figure 3 shown, on the basis of Embodiment 1, Embodiment 2 or Embodiment 3, a first position sensor 24.1 is disposed on the first electric push rod 24, and a second position sensor 25.1 is disposed on the second electric push rod 25.

[0051] Wherein, a first decorative arm 210 is disposed outside the first joint arm 22, and a second decorative arm 211 is disposed outside the second joint arm 23.

[0052] Embodiment 5: As Figure 6 and Figure 9 shown, on the basis of the above embodiments, the number of mounting seats at both ends of the first joint arm 22 and the second joint arm 23 is two and arranged side by side, and the number of ear seats of the corresponding lower support 21, the first hinge support 13 and the second hinge support 16 is two and arranged side by side.

[0053] The working process is as follows: As Figure 1 shown, at this time, the flip screen module 10 is in the high vertical state, which is also the working state during the performance. When work is not required, first, as Figure 2 shown, the drive motor 15 works to drive the driving gear 15.1 and the gear ring 13.1 to rotate, and the main truss 11 and the LED screen 12 thereon rotate through the first slewing bearing 14 and the second slewing bearing 17, and the flip screen module 10 flips to the horizontal state; secondly, as Figure 3 shown, the first joint arms 22 and the second joint arms 23 on both sides can be synchronously driven by the first electric push rods 24 and the second electric push rods 24 on both sides, and the flip screen module 10 descends to the low position state. Reverse operation can return to the working state. In addition, during the lifting process, the sliding shaft 18 can perform axial movement between the rollers 19 to compensate for the deformation error.

[0054] The above are only specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. The present invention can be used for similar products, and any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A lifting and flipping screen with an instantaneous axial distance compensation structure, characterized in that: It comprises a flip screen module (10) and a lifting arm module (20); The flip screen module (10) comprises a main truss (11) and an LED screen (12); a certain number of mounting brackets (11.1) with holes are arranged on the outer side surface of the main truss (11); and the LED screen (12) is fixed to the main truss (11) via the mounting brackets (11.1) with holes; A first hinge support (13), a first slewing bearing (14) and a driving motor (15) are provided at one end of the main truss (11); the first hinge support (13) is fixed to the main truss (11) via the first slewing bearing (14); the driving motor (15) is installed in the main truss (11); a driving gear (15.1) is provided at the output end of the driving motor (15); and a gear ring (13.1) meshing with the driving gear (15.1) is provided on the first hinge support (13); The other end of the main truss (11) is provided with a second hinge support (16), a second slewing bearing (17) and a sliding shaft (18); the second hinge support (16) is fixed to the outer end of the sliding shaft (18) through the second slewing bearing (17); the inner end of the sliding shaft (18) extends into the main truss (11); and a certain number of rollers (19) are provided on the main truss (11) and are distributed along the circumference and axial direction of the sliding shaft (18); The lifting arm modules (20) are two in number and arranged opposite to each other, and include a lower support (21), a first articulated arm (22), a second articulated arm (23), a first electric push rod (24) and a second electric push rod (25); the lower support (21) is fixed on the base (100); the mounting seat at the lower end of the first articulated arm (22) is hinged to the ear seat of the lower support (21); the mounting seat at the upper end of the first articulated arm (22) is hinged to the mounting seat at the lower end of the second articulated arm (23); the mounting seats at the upper ends of the two second articulated arms (23) are respectively hinged to the ear seats of the first hinge support (13) and the second hinge support (16); The base (100) is provided with two lower articulated seats (26), the first articulated arm (22) is provided with a middle articulated seat A (27) and a middle articulated seat B (28), the second articulated arm (23) is provided with an upper articulated seat (29), the bottoms of the two first electric push rods (24) are respectively articulated with the two lower articulated seats (26), and the movable ends are articulated with the middle articulated seat A (27), the bottoms of the second electric push rods (25) are articulated with the middle articulated seat B (28), and the movable ends are articulated with the upper articulated seat (29).

2. The lifting and flipping screen with instantaneous axial distance compensation structure according to claim 1, characterized in that: An adjusting bolt (19.1) is provided on the mounting seat of the roller (19).

3. The lifting and flipping screen with instantaneous axial distance compensation structure according to claim 1, characterized in that: The sliding shaft (18) is a square shaft, and four groups of rollers (19) are arranged on each surface, distributed in a "2x2" array.

4. The lifting and flipping screen with instantaneous axial distance compensation structure according to claim 1, characterized in that: A pushing arm (22.1) is vertically arranged in the middle of the first joint arm (22), and a middle hinge seat A (27) is arranged at the outer end of the pushing arm (22.1).

5. The lifting and flipping screen with instantaneous axial distance compensation structure according to claim 4, characterized in that: A support arm (22.2) is provided between the two ends of the first joint arm (22) and the outer end of the push arm (22.1).

6. The lifting and flipping screen with instantaneous axial distance compensation structure according to claim 1, characterized in that: The first electric push rod (24) is provided with a first position sensor (24.1), and the second electric push rod (25) is provided with a second position sensor (25.1).

7. The lifting and flipping screen with instantaneous axial distance compensation structure according to claim 1, characterized in that: A first decorative arm (210) is arranged outside the first joint arm (22), and a second decorative arm (211) is arranged outside the second joint arm (23).

8. The lifting and flipping screen with instantaneous axial distance compensation structure according to claim 1, characterized in that: The number of mounting seats at both ends of the first articulated arm (22) and the second articulated arm (23) is two and they are arranged side by side, and the number of ear seats of the corresponding lower support (21), the first hinge support (13) and the second hinge support (16) is two and they are arranged side by side.

Images