Splicing expansion device of LED display array

Abstract

The invention relates to a splicing expansion device of an LED display array, and belongs to the field of splicing expansion devices.The splicing expansion device comprises a bottom plate, an inclined strut and a fixing plate are fixedly arranged on the bottom plate, a first supporting plate and a second supporting plate are fixedly connected to the two sides of the fixing plate respectively, and a transverse plate is fixedly arranged at the top of the first supporting plate and the top of the second supporting plate; a driving assembly is installed on the transverse plate, a first screw rod and a second screw rod are arranged on the driving assembly, a first telescopic assembly is arranged on the outer side of the first screw rod, a second telescopic assembly is arranged on the outer side of the second screw rod, and a connecting frame is installed on the first telescopic assembly. The problems that an existing splicing expansion device is not suitable for supporting and fixing LED display arrays with different sizes and transverse and longitudinal arrangement intervals, and switching among the multiple adjusting modes of synchronous adjustment, independent adjustment of the transverse expansion interval and independent adjustment of the longitudinal expansion interval cannot be achieved are solved.

Description

Technical Field

[0001] The invention relates to a splicing and expanding device for an LED display array, belonging to the field of splicing and expanding devices. Background Art

[0002] The splicing expansion device of the LED display array is mainly used to increase the display area and resolution of the LED display screen so that it can meet the needs of large-size or multi-screen display, and is widely used in public places, conference rooms, performance venues, etc. With the continuous development of display technology, the traditional single LED screen can no longer meet the needs of large-scale, high-resolution display, so it is necessary to use a splicing device to splice and expand the LED display array. The existing splicing expansion device still has some shortcomings.

[0003] The invention patent with the publication number CN111785182B discloses an LED splicing panel, in which a first area adjacent to a splicing seam is arranged on a sub-substrate, the first area includes a first row area and a second row area, and the first row area and the second row area are arranged alternately along the column direction; at least one row of LED devices is arranged in the first row area, and at least one row of LED devices is arranged in the second row area; in the column direction, the LED devices in the first row area and the LED devices in the second row area are arranged alternately; in the row direction, from the end close to the splicing seam to the end away from the splicing seam, the spacing between two adjacent LED devices decreases gradually, so as to improve the visual impact of the excessive splicing seam, thereby improving the display effect of the LED splicing panel. Although the above device can realize the splicing function, it is not suitable for supporting and fixing LED display arrays of different sizes and horizontal and vertical arrangement spacings, and it is not possible to adjust the vertical arrangement spacing while adjusting the horizontal arrangement spacing synchronously, and it is not possible to switch between synchronous adjustment, single adjustment of the horizontal expansion spacing, and single adjustment of the vertical expansion spacing.

[0004] Therefore, we make improvements to this and propose a splicing and expansion device for an LED display array. Summary of the invention

[0005] (I) The technical problem to be solved by the present invention is that the existing splicing and expansion device is not suitable for supporting and fixing LED display arrays of different sizes and horizontal and vertical arrangement spacings, and is not capable of switching between the adjustment modes of synchronous adjustment, single adjustment of the horizontal expansion spacing, and single adjustment of the vertical expansion spacing.

[0006] (II) Technical solution In order to achieve the above-mentioned purpose of the invention, the present invention provides a splicing and expansion device for an LED display array, including a base plate, on which a diagonal brace and a fixed plate are fixedly arranged, and a first support plate and a second support plate are fixedly connected to both sides of the fixed plate, respectively, and a cross plate is fixedly arranged on the top of the first support plate and the second support plate, and a driving assembly is installed on the cross plate, and a first screw and a second screw are arranged on the driving assembly, a first telescopic assembly is arranged on the outer side of the first screw, and a second telescopic assembly is arranged on the outer side of the second screw, a connecting frame is installed on the first telescopic assembly, a connecting frame is provided with a connecting groove, an adjusting block is slidably installed in the connecting frame, a fixing rod is penetrated in the adjusting block, and the fixing rod is connected to the second telescopic assembly.

[0007] The bottom plate, the diagonal brace, the fixed plate, the first support plate, the second support plate and the transverse plate are fixedly connected to form an integral structure, and the bottom plate and the diagonal brace are symmetrically distributed on both sides of the fixed plate.

[0008] In which, the driving assembly includes a motor fixedly connected to the cross plate, a first connecting shaft is fixedly provided on the output shaft of the motor, a first bevel gear is fixedly connected to the first connecting shaft, a second bevel gear is meshingly connected to the side of the first bevel gear, a third bevel gear is meshingly connected to the bottom of the second bevel gear, a first connecting rod is fixedly provided below the first connecting shaft, a key cylinder is connected to the outer key of the first connecting rod, the third bevel gear and the key cylinder are fixedly connected, a second connecting rod is keyed to the second bevel gear, the second connecting rod and the second screw are fixedly connected, a third connecting rod is fixedly provided at the bottom of the key cylinder, and the third connecting rod and the first screw are keyed.

[0009] Among them, a first key block is fixedly provided on the first connecting rod, the key tube and the first key block are slidably connected, the outer side of the key tube is rotatably connected with a first connecting ring, the first connecting ring is fixedly provided with a first connecting plate, and a first electric push rod is fixedly connected between the first connecting plate and the first support plate.

[0010] Among them, the second connecting rod is fixedly connected with the second key block, the second bevel gear and the second key block are slidably connected, the second bevel gear is rotatably mounted with a second connecting ring, and the second electric push rod is fixedly arranged between the second connecting ring and the cross plate.

[0011] The first screw rod and the second screw rod are perpendicular to each other, the first screw rod and the first support plate are rotationally connected, and the second screw rod and the cross plate are rotationally connected.

[0012] Among them, the first telescopic assembly includes a first rotating rod rotatably mounted on the first supporting plate, a second rotating rod rotatably mounted on the first rotating rod, a third rotating rod rotatably mounted on the lowermost second rotating rod, a first connecting block rotatably mounted in the middle of the first rotating rod, a second connecting block rotatably mounted in the middle of the third rotating rod, the first connecting block and the second connecting block are both slidably mounted inside the first supporting plate, and two adjacent second rotating rods are rotatably connected.

[0013] Among them, the first connecting block and the second connecting block are fixedly connected to the connecting frames at corresponding positions, the inner wall of the connecting frame and the outer wall of the adjusting block are fitted with each other, the adjusting block is fixedly connected with an adhesive block, the second screw rod and the second connecting block are threadedly connected, and the second screw rod passes through the interior of the fixing rod.

[0014] Among them, the second telescopic assembly includes a first rotating plate rotatably mounted on the horizontal plate, a second rotating plate is rotatably mounted on the first rotating plate, a third rotating plate is rotatably mounted on the second rotating plate closest to the second supporting plate, a first sliding block is rotatably mounted in the middle of the second rotating plate, a second sliding block is rotatably mounted in the middle of the third rotating plate, a protrusion is fixedly provided at the bottom of the first sliding block and the second sliding block is fixedly connected to the fixing rod, and the second screw rod and the second sliding block are threadedly connected.

[0015] The fixing rod and the connecting frame are perpendicular to each other, the thickness of the adjusting block is the same as that of the connecting frame, and the adjusting block forms a sliding structure between the fixing rod and the connecting frame.

[0016] (III) Beneficial effects The invention provides a splicing and expansion device for an LED display array, which has the following beneficial effects: 1. The device is provided with a first telescopic component, a second telescopic component, a first screw and a second screw. When the first screw and the second screw rotate synchronously, the second connecting block and the second sliding block will be driven to slide, so that the left and right positions of the center of the third rotating plate on the horizontal plate change, and the upper and lower positions of the center of the third rotating rod on the first supporting plate change. The angles of the first rotating plate and the second rotating plate and the first rotating rod and the second rotating rod at various locations are synchronously adjusted, so that the first connecting blocks and the first sliding blocks at various locations on the device can be kept equidistant while the spacing between two adjacent first connecting blocks and two adjacent second sliding blocks is synchronously increased, so that the left and right spacing and the upper and lower spacing of each adjustment block are synchronously increased or decreased, so as to adapt to the use of LED display arrays with different installation spacings, enhance the scope of application of the device, and solve the problem that the existing splicing expansion device is not suitable for supporting and fixing LED display arrays of different sizes and horizontal and vertical arrangement spacings.

[0017] 2. The device is provided with a driving assembly. When the left-right spacing or the up-down spacing between adjacent adjustment blocks needs to be adjusted synchronously, the drive assembly can be adjusted according to the Figure 2 and Figure 3 The second bevel gear is kept in meshing state with the first bevel gear and the third bevel gear, so that the first bevel gear can drive the second bevel gear and the third bevel gear to rotate, thereby driving the first screw and the second screw to rotate simultaneously, realizing the synchronous adjustment function. When the second screw needs to be adjusted separately, the first electric push rod is shortened, so that the key cylinder is separated from the first connecting rod, so that the first bevel gear only drives the second bevel gear to rotate, and the second bevel gear drives the second screw to rotate through the second connecting rod. At this time, the device only adjusts the left and right spacing of adjacent LED display arrays, and the upper and lower spacing of adjacent LED display arrays remains unchanged. The first electric push rod may not be shortened. The push rod shortens the second electric push rod so that the second bevel gear slides on the second connecting rod. At this time, the first bevel gear is not engaged with the second bevel gear. The first connecting rod, the key cylinder and the third connecting rod are driven to rotate through the first connecting shaft. The third connecting rod drives the first screw rod to rotate, and the second screw rod remains stationary, thereby realizing the function of adjusting the upper and lower spacings of adjacent LED display arrays, so that the device can switch between multiple adjustment modes, solving the problem that the existing adjacent LED display array splicing and expansion device cannot switch between the adjustment modes of synchronous adjustment, separate adjustment of the lateral expansion spacing and separate adjustment of the longitudinal expansion spacing.

[0018] 3. The device is provided with a connecting frame, a fixing rod and a connecting groove. The connecting groove allows the fixing rod to pass through and slide left and right, so as to reduce the overall space occupation of the device when the left and right spacing of adjacent LED display arrays is subsequently adjusted synchronously. By reducing the space occupation of the adjustment area, the connecting frame and the fixing rod form a grid structure, so that there is sufficient space for heat dissipation when the spliced ​​LED display array is used later, thereby enhancing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the junction at A in the middle; Figure 3 It is a schematic diagram of the connection structure between the first connecting shaft and the first bevel gear of the present invention; Figure 4This is a schematic diagram of the connection structure between the second support plate and the connection frame of the present invention; Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 This is a schematic diagram of the connection structure between the second support plate and the horizontal plate of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at C in the middle; Figure 8 for Figure 6 A magnified schematic diagram of the structure at D in the middle; Fig. 9 This is a schematic diagram of the connection structure between the transverse plate and the second screw rod of the present invention; Fig.10 for Fig. 9 A magnified schematic diagram of the structure at E in the middle; Fig.11 for Fig. 9 A magnified schematic diagram of the structure at F in the middle.

[0021] Figure numerals: 1, bottom plate; 2, diagonal support; 3, fixed plate; 4, first support plate; 5, second support plate; 6, cross plate; 7, drive assembly; 701, motor; 702, first connecting shaft; 703, first bevel gear; 704, second bevel gear; 705, third bevel gear; 706, first connecting rod; 707, first key block; 708, key cylinder; 709, second connecting rod; 710, second key block; 711, third connecting rod; 712, first connecting ring; 713, first connecting plate; 714, first electric push rod; 715, second connecting ring ; 716, second electric push rod; 8, first screw rod; 9, second screw rod; 10, first telescopic assembly; 1001, first rotating rod; 1002, second rotating rod; 1003, first connecting block; 1004, third rotating rod; 1005, second connecting block; 11, second telescopic assembly; 1101, first rotating plate; 1102, second rotating plate; 1103, first sliding block; 1104, third rotating plate; 1105, second sliding block; 1106, bump; 12, connecting frame; 13, fixing rod; 14, adjusting block; 15, pasting block; 16, connecting groove. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] Embodiment 1: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5, Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the present embodiment proposes a splicing and expansion device for an LED display array, comprising a bottom plate 1, on which an oblique brace 2 and a fixed plate 3 are fixedly arranged, and on both sides of the fixed plate 3 are respectively fixedly connected a first support plate 4 and a second support plate 5, and on the tops of the first support plate 4 and the second support plate 5 are fixedly arranged a cross plate 6, on which a driving component 7 is installed, and on which a first screw 8 and a second screw 9 are arranged, the bottom plate 1, the oblique brace 2, the fixed plate 3, the first support plate 4, the second support plate 5 and the cross plate 6 are used to support the device as a whole, and the first support plate 4 and the second support plate 5 are driven by the driving component 7. The screw 8 rotates or the second screw 9 rotates or drives the first screw 8 and the second screw 9 to rotate synchronously, thereby changing the upper and lower spacing and the left and right spacing of the device for assembling and expanding the LED display array. A first telescopic component 10 is arranged on the outside of the first screw 8, and a second telescopic component 11 is arranged on the outside of the second screw 9. A connecting frame 12 is installed on the first telescopic component 10, and a connecting groove 16 is opened on the connecting frame 12. An adjusting block 14 is slidably installed in the connecting frame 12, and a fixing rod 13 is penetrated in the adjusting block 14, and the fixing rod 13 is connected to the second telescopic component 11. When the first screw rod 8 rotates, it will drive the first telescopic component 10 to shrink or expand synchronously, thereby changing the upper and lower spacing between the two adjacent connecting frames 12 while keeping the two adjacent connecting frames 12 equidistant. When the second screw rod 9 rotates, the second telescopic component 11 will shrink or expand synchronously, so that the left and right spacing between the two adjacent fixing rods 13 can be adjusted while keeping the two adjacent fixing rods 13 equidistant, thereby making the left and right spacing and the upper and lower spacing of the adjustment block 14 can be adjusted synchronously or separately to adapt to the use of LED display arrays with different assembly spacings.

[0024] Embodiment 2: The solution in Example 1 is further introduced below in combination with a specific working method, as described below: like Figure 1 As shown, as a preferred embodiment, on the basis of the above method, further, the bottom plate 1, the diagonal brace 2, the fixed plate 3, the first support plate 4, the second support plate 5 and the cross plate 6 are fixedly connected into an integral structure, the bottom plate 1 and the diagonal brace 2 are symmetrically distributed on both sides of the fixed plate 3, the bottom plate 1 and the diagonal brace 2 are used to support the fixed plate 3, the first support plate 4 and the second support plate 5, to ensure the overall stability of the device.

[0025] like Figure 1 , Figure 2 and Figure 3As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the driving assembly 7 includes a motor 701 fixedly connected to the horizontal plate 6, a first connecting shaft 702 is fixedly provided on the output shaft of the motor 701, a first bevel gear 703 is fixedly connected to the first connecting shaft 702, a second bevel gear 704 is meshedly connected to the side of the first bevel gear 703, a third bevel gear 705 is meshedly connected to the lower part of the second bevel gear 704, a first connecting rod 706 is fixedly provided below the first connecting shaft 702, and the first connecting rod 706 is fixedly provided below the first connecting shaft 702. The outer key of 06 is connected with a key cylinder 708, the third bevel gear 705 and the key cylinder 708 are fixedly connected, the second bevel gear 704 is keyed with a second connecting rod 709, the second connecting rod 709 and the second screw 9 are fixedly connected, the bottom of the key cylinder 708 is fixedly provided with a third connecting rod 711, the third connecting rod 711 and the first screw 8 are keyed, the first connecting shaft 702 is driven to rotate by the motor 701, thereby driving the first bevel gear 703 to rotate, when the second bevel gear 704 and the third bevel gear 705 are in Figure 2 and Figure 3 When in the state of, the second bevel gear 704 is driven to rotate by the first bevel gear 703, the second bevel gear 704 drives the third bevel gear 705 to rotate, the third bevel gear 705 drives the first screw 8 to rotate through the key tube 708 and the third connecting rod 711, and the second bevel gear 704 drives the second screw 9 to rotate through the second connecting rod 709 when rotating, so that the first screw 8 and the second screw 9 rotate at the same time, so as to subsequently adjust the left and right spacing and the up and down spacing of adjacent LED display arrays at the same time.

[0026] like Figure 2 and Figure 3 As shown, as a preferred embodiment, on the basis of the above method, further, a first key block 707 is fixedly provided on the first connecting rod 706, the key cylinder 708 and the first key block 707 are slidably connected, the outer side of the key cylinder 708 is rotatably connected to the first connecting ring 712, a first connecting plate 713 is fixedly provided on the first connecting ring 712, a first electric push rod 714 is fixedly connected between the first connecting plate 713 and the first support plate 4, when the first electric push rod 714 is shortened, it will drive the first connecting plate 713 and the key cylinder 708 to move downward, thereby changing the connection method of each bevel gear on the device, so as to facilitate the subsequent individual adjustment of the left and right spacing of adjacent LED display arrays.

[0027] like Figure 2 and Figure 3As shown, as a preferred embodiment, on the basis of the above method, further, a second connecting rod 709 is fixedly connected to a second key block 710, the second bevel gear 704 and the second key block 710 are slidably connected, a second connecting ring 715 is rotatably installed on the second bevel gear 704, and a second electric push rod 716 is fixedly arranged between the second connecting ring 715 and the cross plate 6. When the second electric push rod 716 is shortened, it will drive the second connecting ring 715 and the second bevel gear 704 to move, so that the second bevel gear 704 stops rotating, which is convenient for the subsequent individual adjustment of the upper and lower spacings of adjacent LED display arrays.

[0028] like Figure 2 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the first screw 8 and the second screw 9 are perpendicular to each other, the first screw 8 and the first support plate 4 are rotationally connected, and the second screw 9 and the cross plate 6 are rotationally connected, to ensure that the positions of the first screw 8 and the second screw 9 remain unchanged during rotation, and the first screw 8 and the second screw 9, which are perpendicular to each other, are respectively used to adjust the upper and lower spacing and the left and right spacing of adjacent LED display arrays.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, as a preferred embodiment, on the basis of the above method, further, the first telescopic assembly 10 includes a first rotating rod 1001 rotatably mounted on the first supporting plate 4, the first rotating rod 1001 is rotatably mounted with a second rotating rod 1002, the lowermost second rotating rod 1002 is rotatably mounted with a third rotating rod 1004, the middle of the first rotating rod 1001 is rotatably mounted with a first connecting block 1003, the middle of the third rotating rod 1004 is rotatably mounted with a second connecting block 1005, the first connecting block 1003 and the second connecting block 1005 are both slidably mounted on the first Inside the support plate 4, two adjacent second rotating rods 1002 are rotatably connected. When the second connecting block 1005 slides in the first supporting plate 4, the angle change of the third rotating rod 1004 will cause the angles of the remaining second rotating rods 1002 and the first rotating rod 1001 to change. At this time, the first rotating rod 1001, the second rotating rod 1002 and the first connecting block 1003 and the second connecting block 1005 on the third rotating rod 1004 form a telescopic shear frame under the limiting action of the first supporting plate 4, so that the upper and lower spacings of each LED display array can keep changing synchronously later.

[0030] like Figure 1 Figure 4 , Figure 5 , Figure 6 and Figure 8As shown, as a preferred embodiment, on the basis of the above method, further, the first connecting block 1003 and the second connecting block 1005 are fixedly connected to the connecting frame 12 at the corresponding position, the inner wall of the connecting frame 12 and the outer wall of the adjusting block 14 are fitted with each other, the adjusting block 14 is fixedly connected with an adhesive block 15, the second screw 9 and the second connecting block 1005 are threadedly connected, and the second screw 9 passes through the interior of the fixed rod 13. When the second connecting block 1005 slides, it will drive each connecting frame 12 to synchronously increase or decrease the upper and lower spacing of adjacent connecting frames 12 while maintaining equidistant distance, so as to subsequently adjust the assembly spacing of two adjacent rows of LED display arrays.

[0031] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 and Fig.11 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the second telescopic assembly 11 includes a first rotating plate 1101 rotatably mounted on the horizontal plate 6, a second rotating plate 1102 is rotatably mounted on the first rotating plate 1101, a third rotating plate 1104 is rotatably mounted on the second rotating plate 1102 closest to the second supporting plate 5, a first slider 1103 is rotatably mounted in the middle of the second rotating plate 1102, a second slider 1105 is rotatably mounted in the middle of the third rotating plate 1104, and a protrusion 1106 is fixedly provided at the bottom of the first slider 1103 and the second slider 1105, and the protrusion 1106 is fixedly mounted on the bottom of the protrusion 1106. The rods 13 are fixedly connected, and the second screw rod 9 and the second slider 1105 are threadedly connected. When the second screw rod 9 rotates, it will drive the second slider 1105 to slide in the horizontal plate 6. When the second slider 1105 slides, it will drive the third rotating plate 1104 to rotate. At this time, the second rotating plate 1102 is limited by the first slider 1103, so that the first rotating plate 1101 and the second rotating plate 1102 rotate synchronously with the third rotating plate 1104. When the third rotating plate 1104 rotates synchronously, the distance between the two adjacent protrusions 1106 will be synchronously increased or decreased, so as to subsequently adjust the left and right distance between the two adjacent columns of LED display arrays.

[0032] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 and Fig.11As shown, as a preferred embodiment, on the basis of the above method, further, the fixing rod 13 and the connecting frame 12 are perpendicular to each other, the thickness of the adjustment block 14 is the same as the thickness of the connecting frame 12, and the adjustment block 14 forms a sliding structure between the fixing rod 13 and the connecting frame 12. When the position of the fixing rod 13 changes, the left and right spacing of the adjustment blocks 14 in adjacent columns will be adjusted. After the upper and lower spacing of two adjacent connecting frames 12 is adjusted, the upper and lower spacing of the adjustment blocks 14 in each row will be adjusted, thereby realizing the synchronous adjustment function of the LED display array.

[0033] Embodiment 3: The schemes in Example 1 and Example 2 are further introduced below in combination with specific working methods, as described below for details: Specifically, when the splicing expansion device of the LED display array is used: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the diagonal support 2, the fixed plate 3, the first support plate 4, the second support plate 5 and the cross plate 6 on the bottom plate 1 are used to support the device as a whole, and the driving assembly 7 is used to drive the first screw 8 to rotate or the second screw 9 to rotate or drive the first screw 8 and the second screw 9 to rotate synchronously, as shown in FIG. Figure 2 and Figure 3 As shown, the motor 701 drives the first connecting shaft 702 to rotate, driving the first bevel gear 703 to rotate, and the second bevel gear 704 and the third bevel gear 705 are in Figure 2 and Figure 3When the first bevel gear 703 is in the meshing state, the first bevel gear 703 can drive the second bevel gear 704 to rotate, the second bevel gear 704 drives the third bevel gear 705 to rotate, the third bevel gear 705 drives the first screw 8 to rotate through the key cylinder 708 and the third connecting rod 711, and the second bevel gear 704 drives the second screw 9 to rotate through the second connecting rod 709 when rotating, so that the first screw 8 and the second screw 9 rotate at the same time (it should be noted that when the device is actually used, it is necessary to select the first screw 8 and the second screw 9 with the corresponding thread rotation direction according to the rotation direction of the second bevel gear 704 and the third bevel gear 705 to ensure that the left and right spacing and the upper and lower spacing of each LED display array remain the same increase or decrease). When the first electric push rod 714 is shortened, it will drive the first connecting plate 713 and the first connecting ring 712 to move downward, the key cylinder 708 and the third bevel gear 705 to move downward, and the third bevel gear 705 will no longer maintain a key connection with the first connecting rod 706 through the first key block 707. At this time, the first bevel gear 703 will only drive the second bevel gear 704 and the second screw 9 to rotate, and the third bevel gear 705 will remain stationary. When the first electric push rod 714 is not shortened and the second electric push rod 716 is shortened, the second electric push rod 716 will drive the second connecting ring 715 and the second bevel gear 704 to move, so that the second bevel gear 704 stops rotating (the second key block 710 keeps the second connecting rod 709 and the second bevel gear 704 in a key connection state at all times, so as to drive the second screw rod 9 to rotate when the second bevel gear 704 re-engages with the first bevel gear 703). At this time, the second screw rod 9 remains stationary and the first screw rod 8 is driven to rotate. By changing the connection method of the bevel gears on the device, it is convenient to adjust the left and right spacing and the up and down spacing of adjacent LED display arrays separately in the subsequent process.

[0034] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, when the first screw 8 rotates, it will drive the first telescopic component 10 to shrink or expand synchronously, thereby changing the upper and lower spacing of the two adjacent connection frames 12 while keeping the two adjacent connection frames 12 equidistant. When the second screw 9 rotates, the second telescopic component 11 will shrink or expand synchronously, so that the left and right spacing of the two adjacent fixing rods 13 can be adjusted while keeping the two adjacent fixing rods 13 equidistant, and the left and right spacing and the upper and lower spacing of the adjustment block 14 can be adjusted synchronously or separately to adapt to the use of LED display arrays with different assembly spacings. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, when the first screw rod 8 rotates, it will drive the second connecting block 1005 at the bottom to move up and down. When the second connecting block 1005 slides in the first support plate 4, the angle change of the third rotating rod 1004 will cause the angles of the remaining second rotating rods 1002 and the first rotating rod 1001 to change. At this time, the first rotating rod 1001, the second rotating rod 1002 and the first connecting block 1003 and the second connecting block 1005 on the third rotating rod 1004 form a longitudinal telescopic shear frame under the limiting action of the first support plate 4, thereby driving each connecting frame 12 to synchronously increase or decrease the upper and lower spacing of adjacent connecting frames 12 and their internal rows of adjustment blocks 14 and pasting blocks 15 while maintaining equidistant, thereby adjusting the longitudinal assembly spacing of two adjacent rows of LED display arrays. When the second screw rod 9 rotates, it will drive the second slider 1105 to slide left and right in the horizontal plate 6. When the second slider 1105 slides, it will drive the third rotating plate 1104 to rotate. The second rotating plates 1102 at various locations rotate synchronously under the limiting action of the first slider 1103, so that the first rotating plate 1101, the second rotating plate 1102 and the third rotating plate 1104 form a transverse telescopic shear frame, so that the distance between two adjacent protrusions 1106 can be increased or decreased synchronously, so that the fixing rod 13 drives each column of adjustment blocks 14 to slide left and right, thereby realizing the function of synchronously adjusting or separately adjusting the up, down, left and right spacing of the LED display array.

[0035] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A splicing and expansion device for an LED display array, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly provided with an oblique support (2) and a fixed plate (3); the first support plate (4) and the second support plate (5) are fixedly connected to the two sides of the fixed plate (3); a transverse plate (6) is fixedly provided on the top of the first support plate (4) and the second support plate (5); a driving assembly (7) is installed on the transverse plate (6); a first screw rod (8) and a second screw rod (9) are provided on the driving assembly (7); a first telescopic assembly (10) is provided on the outer side of the first screw rod (8); a second telescopic assembly (11) is provided on the outer side of the second screw rod (9); a connecting frame (12) is installed on the first telescopic assembly (10); a connecting groove (16) is provided on the connecting frame (12); an adjusting block (14) is slidably installed in the connecting frame (12); a fixing rod (13) is provided through the adjusting block (14); the fixing rod (13) is connected to the second telescopic assembly (11).

2. The LED display array splicing and expansion device according to claim 1, characterized in that: The bottom plate (1), the diagonal brace (2), the fixed plate (3), the first support plate (4), the second support plate (5) and the transverse plate (6) are fixedly connected to form an integral structure, and the bottom plate (1) and the diagonal brace (2) are symmetrically distributed on both sides of the fixed plate (3).

3. The LED display array splicing and expansion device according to claim 1, characterized in that: The driving assembly (7) comprises a motor (701) fixedly connected to the transverse plate (6); a first connecting shaft (702) is fixedly arranged on the output shaft of the motor (701); a first bevel gear (703) is fixedly connected to the first connecting shaft (702); a second bevel gear (704) is meshingly connected to the side of the first bevel gear (703); a third bevel gear (705) is meshingly connected to the bottom of the second bevel gear (704); a third bevel gear (706) is fixedly arranged below the first connecting shaft (702); A connecting rod (706), wherein the outer side key of the first connecting rod (706) is connected to a key cylinder (708), the third bevel gear (705) and the key cylinder (708) are fixedly connected, the second bevel gear (704) is keyed to a second connecting rod (709), the second connecting rod (709) and the second screw rod (9) are fixedly connected, a third connecting rod (711) is fixedly provided at the bottom of the key cylinder (708), and the third connecting rod (711) and the first screw rod (8) are keyed.

4. The LED display array splicing and expansion device according to claim 3, characterized in that: A first key block (707) is fixedly arranged on the first connecting rod (706), the key tube (708) and the first key block (707) are slidably connected, the outer side of the key tube (708) is rotatably connected to a first connecting ring (712), a first connecting plate (713) is fixedly arranged on the first connecting ring (712), and a first electric push rod (714) is fixedly connected between the first connecting plate (713) and the first support plate (4).

5. The LED display array splicing and expansion device according to claim 4, characterized in that: A second key block (710) is fixedly connected to the second connecting rod (709), the second bevel gear (704) and the second key block (710) are slidably connected, a second connecting ring (715) is rotatably mounted on the second bevel gear (704), and a second electric push rod (716) is fixedly arranged between the second connecting ring (715) and the cross plate (6).

6. The LED display array splicing and expansion device according to claim 3, characterized in that: The first screw rod (8) and the second screw rod (9) are perpendicular to each other; the first screw rod (8) is rotationally connected to the first support plate (4); and the second screw rod (9) is rotationally connected to the cross plate (6).

7. The LED display array splicing and expansion device according to claim 1, characterized in that: The first telescopic assembly (10) comprises a first rotating rod (1001) rotatably mounted on a first supporting plate (4); a second rotating rod (1002) is rotatably mounted on the first rotating rod (1001); a third rotating rod (1004) is rotatably mounted on the lowermost second rotating rod (1002); a first connecting block (1003) is rotatably mounted in the middle of the first rotating rod (1001); a second connecting block (1005) is rotatably mounted in the middle of the third rotating rod (1004); the first connecting block (1003) and the second connecting block (1005) are both slidably mounted inside the first supporting plate (4); and two adjacent second rotating rods (1002) are rotatably connected.

8. The LED display array splicing and expansion device according to claim 7, characterized in that: The first connecting block (1003) and the second connecting block (1005) are fixedly connected to the connecting frame (12) at the corresponding position, the inner wall of the connecting frame (12) and the outer wall of the adjusting block (14) are in contact with each other, the adjusting block (14) is fixedly connected with an adhesive block (15), the second screw rod (9) and the second connecting block (1005) are threadedly connected, and the second screw rod (9) passes through the interior of the fixing rod (13).

9. The LED display array splicing and expansion device according to claim 7, characterized in that: The second telescopic assembly (11) comprises a first rotating plate (1101) rotatably mounted on the transverse plate (6); a second rotating plate (1102) is rotatably mounted on the first rotating plate (1101); a third rotating plate (1104) is rotatably mounted on the second rotating plate (1102) closest to the second supporting plate (5); a first sliding block (1103) is rotatably mounted in the middle of the second rotating plate (1102); a second sliding block (1105) is rotatably mounted in the middle of the third rotating plate (1104); a protrusion (1106) is fixedly provided at the bottom of each of the first sliding block (1103) and the second sliding block (1105); the protrusion (1106) is fixedly connected to the fixing rod (13); and the second screw rod (9) is threadedly connected to the second sliding block (1105).

10. The LED display array splicing and expansion device according to claim 9, characterized in that: The fixing rod (13) and the connecting frame (12) are perpendicular to each other, the thickness of the adjusting block (14) is the same as the thickness of the connecting frame (12), and the adjusting block (14) forms a sliding structure between the fixing rod (13) and the connecting frame (12).

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