A tiled display system

Abstract

The utility model relates to a spliced display system belongs to LED display screen installation technical field. The spliced display system includes fixed base, mounting bracket and the LED display screen of being hung and installed on mounting bracket, the fixed base has the square shell of bottom opening, one end of mounting bracket is inserted and is installed in square shell, four lateral walls of square shell all are threadedly connected with adjusting part, adjusting part extends along the horizontal direction and is butt joint with the lateral wall of mounting bracket, square shell still is equipped with the strip hole that extends along the horizontal direction, the lock piece is worn in the strip hole, the lock piece locks mounting bracket and is fixed in square shell. The utility model provides the scheme, can realize the quick adjustment of mounting bracket horizontal position through adjusting part, accurately matches the gravity center of the display screen of hanging point, has improved structural stability and service life significantly.

Description

Technical Field

[0001] This utility model relates to the field of LED display installation technology, and in particular to a splicing display system. Background Technology

[0002] With the widespread application of LED displays in commercial displays, stage performances, outdoor advertising, and other scenarios, their installation stability and structural durability have become key technical indicators. LED displays are usually fixed to the ceiling or frame through a hanging structure. Among them, the mounting bracket is the core component connecting the building structure and the display screen, and its stress uniformity directly affects the safety and lifespan of the entire system.

[0003] In traditional LED display screen mounting structures, the mounting base and the mounting frame are often rigidly connected directly. In this design, the center of gravity of the mounting frame itself usually coincides with the plumb line of the mounting point. However, after the LED display screen is installed on the mounting frame, the center of gravity of the overall structure formed by the mounting frame and the LED display screen does not coincide with the plumb line of the lifting point. This results in uneven stress on the mounting base and the mounting frame, leading to problems such as loosening of the mounting base, deformation of the mounting frame, and even potential safety hazards. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides a splicing display system that can quickly adjust the horizontal position of the mounting frame through adjusting components, accurately match the center of gravity of the hanging point and the display screen, and significantly improve structural stability and service life.

[0005] This utility model provides a splicing display system, including a fixed base, a mounting frame, and an LED display screen that can be suspended and installed on the mounting frame. The fixed base has a square housing with an open bottom. One end of the mounting frame is inserted into the square housing. Adjustable members are threaded to the four side walls of the square housing. The adjustable members extend horizontally and abut against the side walls of the mounting frame. The square housing also has a horizontally extending strip hole. The locking member passes through the strip hole and locks the mounting frame tightly and fixes it in the square housing.

[0006] In some embodiments, the mounting frame includes at least two longitudinally extending telescopic tubes and at least two parallel and transversely extending support beams. The fixed ends of the telescopic tubes are inserted into a square housing, and the support beams are connected to the free ends of the telescopic tubes. The LED display screen is suspended on the support beams.

[0007] In some embodiments, the telescopic tube includes a fixed rod and a sliding rod, the sliding rod being slidably engaged with the fixed rod, and the fixed rod being inserted into a square housing;

[0008] Both the fixed rod and the sliding rod are square tubular structures, and the outer circumference of the fixed rod is smaller than the inner circumference of the sliding rod.

[0009] The sliding rod has multiple sets of first through holes evenly distributed along its length, penetrating its opposite side walls. The fixing rod has multiple sets of second through holes evenly distributed along its length, penetrating its opposite side walls. Bolts are inserted through the corresponding first and second through holes to connect and fix the sliding rod and the fixing rod.

[0010] In some embodiments, the sliding rod has a plurality of limiting holes and threaded holes evenly distributed along its length, and the support beam is provided with a corresponding locking pin and bolt. The locking pin is embedded in the corresponding limiting hole, and the bolt passes through the support beam and is screwed into the corresponding threaded hole for fixation.

[0011] In some embodiments, the LED display screen includes a plurality of LED cabinets, a back panel, and mounting brackets. The plurality of LED cabinets are mounted on the back panel and connected by a first connector to form a column-arranged cabinet structure. The mounting brackets are located on the side of the back panel away from the LED cabinets. The plurality of column-arranged cabinet structures are connected by a second connector to form a square array structure of the LED display screen. The mounting brackets are attached to a support beam.

[0012] In some embodiments, the connection between the support beam and the hanger is provided with a limiting notch.

[0013] In some embodiments, along the arrangement direction of the LED housing, one side of the LED housing is provided with a positioning hole and the other side is provided with a positioning pin, and adjacent LED housings are aligned and spliced ​​by the cooperation of the positioning hole and the positioning pin.

[0014] In some embodiments, the first connector is a non-detachable screw; the second connector is a connecting plate, and the connecting plates are inserted between adjacent LED housings and locked and fixed by fastening bolts.

[0015] In some embodiments, the mounting bracket is further provided with a height adjustment screw, the end of which abuts against the support beam.

[0016] In some embodiments, the fixing rod has a hollow tubular structure with a sliding groove at the end away from the fixing base; the cables of the LED display screen are integrated and housed in the internal cavity of the fixing rod, and the sliding groove is used to avoid the cables of the LED display screen from passing through.

[0017] The technical solution provided by this utility model can include the following beneficial effects:

[0018] The splicing display system provided by this utility model allows for fine-tuning of the mounting bracket's position in the horizontal plane by rotating the adjusting components on each side wall, thereby adjusting the center of gravity of the LED display screen to align it with the suspension point. Simultaneously, the square housing and mounting bracket form an insert-fit structure, adaptable to the different center of gravity distributions of LED displays of varying sizes. Furthermore, the slotted holes provide sliding adjustment space for the locking components; after adjusting the mounting bracket's position using the adjusting components, the locking components can then securely fasten the mounting bracket. Finally, the insert-fit structure between the square housing and the mounting bracket, along with the contact adjustment method of the four side walls, can accommodate mounting brackets of different sizes or with slight deviations, reducing the stringent requirements for the mounting bracket's machining precision and improving the production compatibility of components and on-site installation adaptability. Attached Figure Description

[0019] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0020] Figure 1 This is an overall structural diagram of the splicing display system shown in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the mounting bracket structure shown in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the fixing base shown in an embodiment of the present utility model;

[0023] Figure 4 This is a front view of the LED housing shown in an embodiment of the present invention;

[0024] Figure 5 This is a side view of the LED housing shown in an embodiment of the present invention;

[0025] Figure 6 This is an assembly diagram of the box structure shown in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the box structure shown in an embodiment of the present invention;

[0027] Figure 8 yes Figure 7 Enlarged diagram of point A in the middle.

[0028] Figure label:

[0029] 1. Fixed base; 10. Square housing; 100. Strip hole; 11. Adjusting component; 12. Locking component;

[0030] 2. Mounting bracket; 21. Support beam; 22. Fixing rod; 221. Sliding groove; 23. Sliding rod;

[0031] 3. LED display screen; 31. LED cabinet; 311. Positioning hole; 312. Positioning pin; 32. Back panel; 33. Hanging piece; 34. First connector; 35. Second connector. Detailed Implementation

[0032] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0033] In existing technologies, because the center of gravity of the integrated structure formed by the mounting frame and the LED display screen (hereinafter referred to as the "suspended assembly") does not coincide with the vertical line of the lifting point, the tension borne by the fixed seat is no longer a simple vertical load, but rather forms an eccentric moment: the fixed seat on one side of the center of gravity needs to bear an additional horizontal component force. This uneven force distribution can lead to the following problems: First, long-term overload of a fixed seat on one side can easily cause bolt loosening, shell deformation, or even breakage, which may result in a safety accident of the LED display screen falling in severe cases; second, the connection interface between the fixed seat and the main building may experience concrete peeling or steel structure fatigue due to local stress concentration, increasing maintenance frequency and costs; third, the LED display screen as a whole may tilt or sway due to uneven force distribution, affecting the flatness and visual effect of the displayed image.

[0034] Although some hoisting structures alleviate uneven stress by strengthening the fixed base or adding auxiliary support components (such as stay cables), they can only passively distribute the load and cannot fundamentally solve the core contradiction that "the overall center of gravity of the hoisting is not on the same vertical line as the hoisting point".

[0035] To address this issue, this invention proposes a splicing display system that enables rapid adjustment of the horizontal position of the mounting bracket 2 via the adjusting component 11, precisely matching the center of gravity of the hanging point and the display screen, thus significantly improving structural stability and service life.

[0036] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0037] See Figures 1 to 3The present invention proposes a splicing display system, including a fixed base 1, a mounting frame 2, and an LED display screen 3 that can be suspended and installed on the mounting frame 2. The fixed base 1 has a square housing 10 with an open bottom. One end of the mounting frame 2 is inserted into the square housing 10. Each of the four side walls of the square housing 10 is threaded with an adjusting member 11. The adjusting member 11 extends horizontally and abuts against the side wall of the mounting frame 2. The square housing 10 is also provided with a strip hole 100 extending horizontally. The locking member 12 passes through the strip hole 100 and locks the mounting frame 2 into the square housing 10.

[0038] The mounting base 1 is fixedly connected to the building structure using expansion bolts. The mounting bracket 2, serving as the load-bearing structure of the LED display screen 3, has one end housed in the mounting base 1, limited by the adjusting member 11, and locked by the locking member 12. The mounting base 1 can be made of high-strength sheet metal, and the square housing 10 can be made of cold-rolled square tubing. The square housing 10 can be fixed to the mounting base 1 by welding or bolts. The square housing 10 has a receiving cavity for accommodating one end of the mounting bracket 2. The size of this receiving cavity is larger than the outer perimeter of one end of the mounting bracket 2, allowing adjustment of the horizontal position of the mounting bracket 2 within the receiving cavity. The adjusting member 11 can be a set screw or bolt, which is threaded into the square housing 10 to finely adjust the horizontal position of the mounting bracket 2. The slotted hole 100 can be an oblong hole or a rectangular through hole, and the locking member 12 is preferably a quick-locking bolt with a handle, which is tightened to fix the mounting bracket 2. The combined design of the slot 100 and the locking element 12 allows the mounting bracket 2 to be flexibly positioned horizontally within the square housing 10, ensuring that the actual center of gravity of the hoisting assembly coincides with the plumb line of the hoisting point.

[0039] In this embodiment, through the coordinated action of the adjusting member 11 and the locking member 12 of the fixed seat 1, the horizontal position of the mounting frame 2 can be precisely adjusted and rigidly locked, solving the problem of uneven force on the fixed seat 1 caused by the shift of the center of gravity in traditional hoisting structures.

[0040] Furthermore, to improve the portability of the mounting bracket 2 and make it adaptable to different installation heights, please refer to the following specific embodiments based on the above description. Figure 2 The present invention further proposes that the mounting frame 2 includes at least two longitudinally extending telescopic tubes and at least two parallel and transversely extending support beams 21. The fixed ends of the telescopic tubes are inserted into the square housing 10, and the support beams 21 are connected to the free ends of the telescopic tubes. The LED display screen 3 is suspended on the support beams 21.

[0041] The telescopic tube includes a fixed rod 22 and a sliding rod 23, wherein the sliding rod 23 is slidably engaged with the fixed rod 22, and the fixed rod 22 is inserted into the square housing 10.

[0042] Both the fixed rod 22 and the sliding rod 23 are square tubular structures, and the outer circumferential dimension of the fixed rod 22 is smaller than the inner circumferential dimension of the sliding rod 23.

[0043] The sliding rod 23 has multiple sets of first through holes evenly distributed along its length direction, penetrating its opposite side walls. The fixing rod 22 has multiple sets of second through holes evenly distributed along its length direction, penetrating its opposite side walls. The sliding rod 23 and the fixing rod 22 are connected and fixed by bolts passing through the corresponding first and second through holes.

[0044] Specifically, the design of the telescopic tube allows the height of the mounting frame 2 to be adjusted according to actual needs. The height of the mounting frame 2 is flexibly adjustable through the sliding engagement of the sliding rod 23 and the fixed rod 22, as well as the fixing method using through holes and bolts. The connection between the support beam 21 and the telescopic tube employs a dual fixing method of pins and bolts, further enhancing the stability of the structure.

[0045] The fixed rod 22 and sliding rod 23 adopt a square tubular structure, which effectively prevents relative rotation during extension and retraction, ensuring structural stability. The outer circumference of the fixed rod 22 is smaller than the inner circumference of the sliding rod 23, allowing the sliding rod 23 to slide smoothly on the fixed rod 22. The first and second through holes are evenly distributed along the length direction, and different hole positions can be selected for fixing according to actual installation requirements, thereby achieving flexible adjustment of the installation height. As a preferred embodiment, there are eight sets of both the first and second through holes, with each set containing two symmetrically arranged holes to enhance connection strength. M8 galvanized bolts can be used, along with anti-loosening nuts, to ensure reliable connection.

[0046] In this embodiment, the adjustable telescopic tube structure solves the problem of the fixed installation height of traditional LED displays 3, which makes it difficult to adapt to different installation environments. The square tubular structure avoids the easy rotation of circular tubes, and the multiple sets of through holes provide multiple height adjustment levels, making the installation process more flexible and convenient.

[0047] Furthermore, the sliding rod 23 has a number of limiting holes (not shown) and threaded holes (not shown) evenly distributed along its length. The support beam 21 is provided with a corresponding locking pin and a bolt. The locking pin is embedded in the corresponding limiting hole, and the bolt passes through the support beam 21 and is screwed into the corresponding threaded hole for fixation.

[0048] Specifically, the limiting hole is a circular through hole or a square groove structure, used to form a mechanical limiting fit with the locking pin. The threaded hole is an internal thread hole, and the thread specification can be selected from M4 to M12 standard threads. The locking pin can be a spring pin or a fixed cylindrical pin, and its diameter forms a transition fit with the limiting hole. The bolt is an external thread bolt that matches the threaded hole, and a washer can be placed on the head to prevent loosening. As a preferred embodiment, the limiting hole and the threaded hole are distributed in an alternating manner on the same side wall of the sliding rod 23, with the distance between adjacent holes being 50~100mm; the end of the support beam 21 is provided with a U-shaped mounting groove, and the locking pin is fixed to both sides of the groove wall by a bushing, and the bolt passes through the through hole at the bottom of the groove and connects to the threaded hole. The lateral positioning of the support beam 21 is achieved by the cooperation of the limiting hole and the locking pin, and the longitudinal fixation is provided by the threaded connection of the bolt and the threaded hole, forming a three-dimensional constraint mechanism and simplifying the positioning operation process during installation.

[0049] Furthermore, such as Figures 4-7 As shown, the LED display screen 3 includes several LED cabinets 31, a back plate 32, and mounting brackets 33. The LED cabinets 31 are mounted on the back plate 32 and connected by a first connector 34 to form a row-shaped cabinet structure. The mounting brackets 33 are located on the side of the back plate 32 opposite to the LED cabinets 31. The several rows of cabinet structures are connected by a second connector 35 to form a square array structure for the LED display screen 3. The mounting brackets 33 are attached to a support beam 21. A limiting notch is provided at the connection point between the support beam 21 and the mounting bracket 33.

[0050] The LED cabinet 31 is modularly assembled via a back plate 32, which serves as the load-bearing structure. To balance lightweight design and structural strength, the back plate 32 can be made of aluminum alloy. The first connector 34 is preferably a non-removable screw, enabling quick assembly and disassembly between cabinets and fine-tuning of their positions. The mounting bracket 33 uses a hook or snap-fit ​​structure, and the second connector 35 uses an inverted Z-shaped connecting plate, which secures adjacent cabinet rows with bolts to form an integrated display screen structure. A height adjustment screw can be located at the bottom of the mounting bracket 33 for fine-tuning the vertical position of the display screen.

[0051] The limiting notch and the hanging part 33 form a lateral constraint to prevent the display screen from being horizontally displaced when subjected to external force. Specifically, the limiting notch can be machined into a U-shaped groove structure on the upper surface of the support beam 21, with a groove depth of 3 to 5 mm. The limiting notch is distributed at intervals on the support beam 21 to form multiple independent limiting units.

[0052] To avoid problems such as increased splicing gaps and misaligned display images during long-term use of the LED display screen 3, this utility model further proposes that along the arrangement direction of the LED cabinet 31, one side of the LED cabinet 31 is provided with a positioning hole 311 and the other side is provided with a positioning pin 312, and adjacent LED cabinets 31 are aligned and spliced ​​through the cooperation of the positioning hole 311 and the positioning pin 312.

[0053] The mating structure of the positioning hole 311 and the positioning pin 312 can be implemented in the following ways: the positioning hole 311 is a circular blind hole or through hole, and the positioning pin 312 is a cylindrical protrusion, with a clearance fit between the two. Alternatively, the positioning hole 311 and the positioning pin 312 can be designed as a conical structure, achieving self-centering through conical surface mating. As a preferred embodiment, the head of the positioning pin 312 can be provided with a guide chamfer to facilitate insertion into the positioning hole 311. The materials of the positioning hole 311 and the positioning pin 312 are preferably aluminum alloy or stainless steel, with the positioning pin 312 having a higher hardness than the material of the positioning hole 311 to reduce wear. When adjacent LED cabinets 31 approach each other, the positioning pin 312 automatically inserts into the positioning hole 311, eliminating lateral displacement and angular deviation between the cabinets through geometric constraints. This solves the problem of cumulative errors when splicing multiple cabinets and avoids the uneven splicing gaps caused by traditional manual visual adjustment. Compared with existing technologies, this structure simplifies the installation process while ensuring positioning accuracy. Installers only need to push the cabinet to the contact position to automatically complete the alignment, greatly improving splicing efficiency. At the same time, the physical limiting structure formed by the combination of positioning pins 312 and positioning holes 311 can effectively prevent relative displacement of the LED cabinet 31 in a vibration environment, ensuring the flatness of the display surface.

[0054] Furthermore, the first connector 34 is a non-removable screw; the second connector 35 is a connecting plate, and the connecting plates are inserted between adjacent LED cabinets 31 and are locked and fixed by fastening bolts.

[0055] Furthermore, the aforementioned mounting bracket 33 is also provided with a height adjustment screw (not shown), the end of which abuts against the support beam 21.

[0056] To address the issue of exposed and messy cables, based on the specific embodiments described above, this utility model also proposes a hollow tubular structure for the fixing rod 22, with a sliding groove 221 at the end furthest from the fixing base 1. The cables of the LED display screen 3 are integrated and housed within the internal cavity of the fixing rod 22, and the sliding groove 221 is used to prevent the cables of the LED display screen 3 from passing through.

[0057] The hollow tubular structure of the fixing rod 22 can have a square or circular cross-section, and the wall thickness can be selected from 1.5 to 3 mm of metal material depending on the load-bearing requirements. A sliding groove 221 is formed within 30 to 60 cm of the end of the fixing rod 22, with a groove width of 20 to 30 mm to accommodate multiple cables. Rubber cable sleeves can be installed at the edges of the sliding groove 221 to prevent cable abrasion.

[0058] Corresponding to the aforementioned embodiments, the specific installation process of this splicing display system is as follows:

[0059] 1. Mark the installation position of the fixing seat 1 on the main body of the building, such as the ceiling. Use expansion bolts to fasten the fixing seat 1 to the main body of the building. Use a level to calibrate and ensure that the bottom opening of the square shell 10 faces downward and the levelness deviation is ≤2mm.

[0060] 2. Insert the fixing rod 22 into the square housing 10, and install the quick-locking bolt in the strip hole 100 to suspend the fixing rod 22 on the fixing base 1. The sliding rod 23 is sleeved on the outside of the fixing rod 22. The overall height of the mounting bracket 2 is adjusted by the sliding engagement of the sliding rod 23 and the fixing rod 22. For example, if the target height is 2m, align the first through hole on the sliding rod 23 with the second through hole on the fixing rod 22. Then, use an M8 galvanized bolt to pass through the aligned first and second through holes, and tighten it with a lock nut to complete the rigid connection between the sliding rod 23 and the fixing rod 22.

[0061] 3. Select the appropriate number of mounting brackets 33 according to the overall height of the LED display screen 3. The number of support beams 21 corresponds to the number of mounting brackets. Align the end of the support beam 21 with the limiting hole and threaded hole on the sliding rod 23. First, insert the locking pin of the support beam 21 into the limiting hole of the sliding rod 23 to achieve preliminary positioning. Insert the M6 ​​bolt through the bottom hole of the mounting groove of the support beam 21, screw it into the threaded hole of the sliding rod 23, and tighten the bolt to complete the locking and fixing.

[0062] 4. Take a single LED cabinet 31, align the positioning pin 312 on one side with the positioning hole 311 of the adjacent cabinet and insert it. Achieve lateral alignment through the self-centering function of the conical surface. Use a non-detachable screw to pass through the connecting hole of the adjacent cabinet and tighten it initially to form a row-shaped cabinet structure.

[0063] Repeat the above steps to complete the assembly of multiple sets of column-shaped box structures.

[0064] 5. Insert connecting plates at the joints of adjacent column-shaped cabinet structures, use fastening bolts to pass through the mounting holes of the connecting plates and cabinets, and tighten the bolts to form a square array of display screens.

[0065] 6. Fix the assembled LED cabinet array 31 to the aluminum alloy back plate 32 with bolts, and weld or bolt the hanging part 33 on the side of the back plate 32 away from the cabinet.

[0066] 7. Align the hook of the LED display screen 3's mounting bracket 33 with the limiting notch of the support beam 21, and slowly lower it so that the hook is embedded in the groove, forming a lateral constraint. Adjust the vertical position of the LED display screen 3 by rotating the height adjustment screw at the bottom of the mounting bracket 33 to ensure that its bottom is consistent with the target installation height.

[0067] 8. Calculate the center of gravity of the LED display screen 3 after mounting the mounting bracket 2. If the center of gravity is biased to the left, rotate the right adjustment piece 11 of the square housing 10 clockwise to screw it in, and at the same time rotate the left adjustment piece 11 counterclockwise to screw it out, pushing the mounting bracket 2 to move to the right as a whole.

[0068] If the center of gravity is biased forward / backward, adjust the adjusting parts 11 on the front / rear side walls in the same way until the center of gravity of the LED display screen 3 and the suspension point are on the same vertical line.

[0069] After adjusting the mounting bracket 2 to the target position, tighten the quick-locking bolts to make the mounting bracket 2 and the fixed base 1 form a rigid connection.

[0070] 9. The power cord, signal cord, etc. of the LED display screen 3 are integrated and inserted into the hollow cavity of the fixing rod 22, and led out to the external equipment through the sliding groove 221 at the end of the fixing rod 22. The system can then be put into use.

[0071] In summary, this utility model, through modular splicing, multi-dimensional adjustment, and rigid locking design, balances installation efficiency and structural stability, effectively solving the problem of uneven force distribution caused by center of gravity shift in traditional hoisting structures.

[0072] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A splicing display system, characterized in that, The device includes a fixed base (1), a mounting bracket (2), and an LED display screen (3) that can be suspended on the mounting bracket (2). The fixed base (1) has a square housing (10) with an open bottom. One end of the mounting bracket (2) is inserted into the square housing (10). Adjusting members (11) are threadedly connected to the four side walls of the square housing (10). The adjusting members (11) extend horizontally and abut against the side walls of the mounting bracket (2). The square housing (10) is also provided with a strip hole (100) extending horizontally. A locking member (12) passes through the strip hole (100). The locking member (12) is used to lock the mounting bracket (2) into the square housing (10).

2. The splicing display system according to claim 1, characterized in that, The mounting frame (2) includes at least two longitudinally extending telescopic tubes and at least two parallel and transversely extending support beams (21). The fixed end of the telescopic tube is inserted into the square housing (10). The support beam (21) is connected to the free end of the telescopic tube. The LED display screen (3) is suspended on the support beam (21).

3. The splicing display system according to claim 2, characterized in that, The telescopic tube includes a fixed rod (22) and a sliding rod (23), the sliding rod (23) is slidably engaged with the fixed rod (22), and the fixed rod (22) is inserted into the square housing (10); Both the fixed rod (22) and the sliding rod (23) are square tubular structures, and the outer circumferential dimension of the fixed rod (22) is smaller than the inner circumferential dimension of the sliding rod (23); The sliding rod (23) has multiple sets of first through holes evenly distributed along its length direction, penetrating its opposite side walls. The fixing rod (22) has multiple sets of second through holes evenly distributed along its length direction, penetrating its opposite side walls. The sliding rod (23) and the fixing rod (22) are connected and fixed by bolts passing through the corresponding first and second through holes.

4. The splicing display system according to claim 3, characterized in that, The sliding rod (23) has a number of limiting holes and threaded holes evenly distributed along its length. The support beam (21) is provided with a corresponding locking pin and bolt. The locking pin is embedded in the corresponding limiting hole, and the bolt passes through the support beam (21) and is screwed into the corresponding threaded hole for fixation.

5. The splicing display system according to claim 1, characterized in that, The LED display screen (3) includes several LED cabinets (31), a back plate (32), and a mounting bracket (33). Several LED cabinets (31) are installed on the back plate (32) and connected by a first connector (34) to form a row-shaped cabinet structure. The mounting bracket (33) is located on the side of the back plate (32) away from the LED cabinets (31). Several row-shaped cabinet structures are connected by a second connector (35) to form a square array structure of the LED display screen (3). The mounting bracket (33) is attached to the support beam (21).

6. The splicing display system according to claim 5, characterized in that, The connection between the support beam (21) and the hanger (33) is provided with a limiting notch.

7. The splicing display system according to claim 6, characterized in that, Along the arrangement direction of the LED housing (31), one side of the LED housing (31) is provided with a positioning hole (311) and the other side is provided with a positioning pin (312). Adjacent LED housings (31) are aligned and spliced ​​through the cooperation of the positioning hole (311) and the positioning pin (312).

8. The splicing display system according to claim 7, characterized in that, The first connector (34) is a non-detachable screw; the second connector (35) is a connecting plate, and the connecting plates are inserted between adjacent LED boxes (31) and are locked and fixed by fastening bolts.

9. The splicing display system according to claim 5, characterized in that, The mounting bracket (33) is also provided with a height adjustment screw, the end of which abuts against the support beam (21).

10. The splicing display system according to claim 3, characterized in that, The fixing rod (22) has a hollow tubular structure, and a sliding groove (221) is provided at one end away from the fixing seat (1). The cables of the LED display screen (3) are integrated and stored in the internal cavity of the fixing rod (22), and the sliding groove (221) is used to avoid the cables of the LED display screen (3) from passing through.

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