Banner support for athletic contest

Abstract

The utility model belongs to the technical field of sports goods, and particularly relates to a banner support for sports contest, which comprises a supporting mechanism, a rope binding component, a transmission mechanism, a limiting mechanism and a guide mechanism, and is characterized in that the supporting mechanism and the rope binding component are arranged, a rope binding rod rotates to wind a rope, and the rope can be wound into a first mounting column; a transmission mechanism and a hand-cranking assembly are arranged, the transmission mechanism is matched with the hand-cranking assembly to be used for driving a rope binding rod to rotate when a rotary drum is rotated, and therefore the rope binding assembly is driven to wind the rope; the rotating plate is clamped to the bottom of the limiting plate, so that the rotating plate can be prevented from continuously rotating, the transmission mechanism is limited, the rope binding rod is prevented from continuously rotating, the guide mechanism and the lifting frame are matched with the lifting block, the rope can be driven to move up and down while being wound, and the rope is prevented from being excessively concentrated on the same part of the outer surface of the rope binding rod during winding.

Description

Technical Field

[0001] This utility model belongs to the field of sports equipment technology, specifically relating to a banner stand for sports competitions. Background Technology

[0002] Banners typically serve as advertising tools. In sports competitions, banners can convey information and create an atmosphere. Banners are usually temporarily hung and tied with ropes. Banner supports are often made of sturdy and durable materials, such as high-strength aluminum alloy or high-quality steel, to ensure that they can stably support the banner, withstand outdoor wind and sun, and be used for a long time.

[0003] Existing banner supports often make it inconvenient to wind up the ropes after use, or to wind the ropes onto the outer surface of the banner support. Long-term exposure of the ropes to the external environment can accelerate wear and aging, reducing the lifespan of the ropes. Utility Model Content

[0004] The purpose of this invention is to provide a banner support for sports competitions, which solves the problem in the prior art that ropes exposed to the external environment for a long time are prone to accelerated wear and aging, reducing the service life of the ropes.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A banner stand for sports competitions includes:

[0007] The support mechanism includes a first mounting column, a second mounting column, a support rod, a support plate, and a door, with ropes fixedly connected to the side of the second mounting column;

[0008] A rope assembly is disposed inside the first mounting post, which facilitates the winding of the rope into the first mounting post.

[0009] A transmission mechanism is provided inside the first mounting column, and the transmission mechanism is used to drive the rope assembly to wind up the rope;

[0010] A limiting mechanism is provided on the side of the first mounting column, which facilitates limiting the transmission mechanism;

[0011] A guiding mechanism is provided inside the first mounting column, which can prevent the rope from becoming too concentrated during winding.

[0012] In a preferred embodiment, a support rod is fixedly provided on the bottom surface of both the first and second mounting columns, and a support plate is fixedly provided on the bottom surface of the support rod. A door is hinged to the front of the second mounting column.

[0013] In a preferred embodiment, the rope assembly includes a rope-binding rod, a baffle, and a vertical groove. The first mounting post has a rope-binding rod and symmetrical baffles inside. The upper and lower ends of the rope-binding rod are rotatably connected to the first mounting post via bearings. The rope-binding rod passes through the baffles and is fixedly connected to the baffles. The first mounting post has symmetrical vertical grooves on the side near the second mounting post. The rope passes through the vertical grooves through the first mounting post to the interior of the first mounting post and is fixedly connected to the rope-binding rod.

[0014] In a preferred embodiment, the transmission mechanism includes a driving gear, a first driven gear, a second driven gear, a third driven gear, a rotating rod, a first bevel gear, and a second bevel gear. The driving gear, the first driven gear, the second driven gear, and the third driven gear are rotatably connected to the inner wall of the first mounting column via bearings. The driving gear meshes with the first driven gear and the second driven gear, and the second driven gear meshes with the third driven gear. A second bevel gear is fixedly disposed on the outer side of the rope-binding rod, and a first bevel gear meshes with the outer side of the second bevel gear. A rotating rod is fixedly disposed on the side of the first bevel gear. The rotating rod passes through the driving gear and is fixedly connected to the driving gear. The rotating rod also passes through the first mounting column and is rotatably connected to the first mounting column.

[0015] In a preferred embodiment, a hand-cranked assembly is provided on the outside of the first mounting column. The hand-cranked assembly includes a rotating plate, a first connecting rod, a fixed plate, and a rotating cylinder. The rotating plate is fixedly provided on the side of the rotating rod away from the first bevel gear, and the first connecting rod is fixedly provided on the other side of the rotating plate. The fixed plate is fixedly provided on the other side of the first connecting rod, and the rotating cylinder is rotatably connected to the first connecting rod.

[0016] In a preferred embodiment, the limiting mechanism includes a lifting plate, a second connecting rod, a U-shaped plate, a limiting plate, and a return spring. A U-shaped plate is fixedly installed on the side of the first mounting column, a lifting plate is installed above the U-shaped plate, a second connecting rod is fixedly installed on the bottom surface of the lifting plate, the second connecting rod passes through the U-shaped plate and is slidably connected to the U-shaped plate, a limiting plate is fixedly installed on the bottom surface of the second connecting rod, and symmetrical return springs are fixedly installed on the top surface of the limiting plate. The other end of the return spring is fixedly connected to the U-shaped plate.

[0017] In a preferred embodiment, the guiding mechanism includes a fixed block, a lifting frame, and a lifting block. Fixed blocks are fixedly provided on the sides of both the first driven gear and the third driven gear. A symmetrical lifting frame is provided inside the first mounting column. A first through hole and a sliding groove are respectively provided on the left and right sides of the lifting frame. A lifting block adapted to the vertical groove is fixedly provided on the side of the lifting frame. The lifting block is slidably connected to the first mounting column through the vertical groove. The front and rear sides of the lifting frame and the side near the lifting block are slidably connected to the inner wall of the first mounting column. A second through hole communicating with the first through hole is provided on the side of the lifting block. The sliding groove is adapted to the fixed block. The fixed block is movably connected to the lifting frame through the sliding groove.

[0018] The technical effects achieved by this utility model are as follows:

[0019] This utility model, by setting up a support mechanism and a rope-binding assembly, allows the rope to be wound up into the first mounting column by rotating the rope-binding rod, thereby protecting the wound rope and extending its service life.

[0020] This utility model sets up a transmission mechanism and a hand crank assembly. The transmission mechanism, together with the hand crank assembly, drives the rotating rod to rotate when the drum is rotated. The rotation of the rotating rod drives the first bevel gear to rotate, the rotation of the first bevel gear drives the second bevel gear to rotate, and the rotation of the second bevel gear drives the rope-binding rod to rotate, thereby driving the rope-binding assembly to wind up the rope.

[0021] This utility model, by setting a limiting mechanism, can prevent the rotating plate from continuing to rotate by engaging the bottom of the limiting plate, thereby limiting the transmission mechanism and preventing the rope rod from continuing to rotate;

[0022] This invention, by setting a guiding mechanism, rotates the drum to drive the rope-winding rod to wind the rope, while simultaneously driving the fixed block to rotate, thereby causing the lifting frame and lifting block to move up and down. The lifting frame, in conjunction with the lifting block, can drive the rope to move up and down while winding the rope, preventing the rope from being too concentrated in the same part on the outer surface of the rope-winding rod during winding. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the main structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the guiding mechanism structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 100. Support mechanism; 101. First mounting column; 102. Second mounting column; 103. Support rod; 104. Support plate; 105. Box door;

[0029] 200. Rope;

[0030] 300. Rope binding assembly; 301. Rope binding rod; 302. Baffle; 303. Vertical groove;

[0031] 400. Transmission mechanism; 401. Driving gear; 402. First driven gear; 403. Second driven gear; 404. Third driven gear; 405. Rotating rod; 406. First bevel gear; 407. Second bevel gear;

[0032] 500. Hand-cranked assembly; 501. Rotating plate; 502. First connecting rod; 503. Fixing plate; 504. Rotating cylinder;

[0033] 600. Limiting mechanism; 601. Lifting plate; 602. Second connecting rod; 603. U-shaped plate; 604. Limiting plate; 605. Return spring;

[0034] 700. Guiding mechanism; 701. Fixing block; 702. Lifting frame; 703. Lifting block. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0038] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0039] Please see the appendix Figures 1-4 As shown, this utility model provides a banner support for sports competitions, including: a support mechanism 100, a rope assembly 300, a transmission mechanism 400, a limiting mechanism 600, and a guiding mechanism 700. The support mechanism 100 includes a first mounting post 101, a second mounting post 102, a support rod 103, a support plate 104, and a door 105. A handle is fixedly provided on the top surface of the first mounting post 101. Support rods 103 are fixedly provided on the bottom surfaces of both the first mounting post 101 and the second mounting post 102. A support plate 104 is fixedly provided on the bottom surface of the support rods 103. The support plate 104 is provided with multiple mounting holes, which facilitate fixing the support plate 104 to the ground, thereby improving the stability of the first mounting post 101 and the second mounting post 102. A door 105 is hinged to the front of the second mounting post 102. A tool compartment is provided inside the second mounting post 102, which is convenient for storing tools such as scissors, tape, and markers. Two ropes 200 are fixedly connected to the side of the second mounting post 102.

[0040] In a preferred embodiment, please refer to Figures 1-2 The first mounting post 101 is provided with a rope binding assembly 300, which consists of a rope binding rod 301, a baffle 302 and a vertical groove 303. The first mounting post 101 is provided with a rope binding rod 301 and symmetrical baffles 302. The upper and lower ends of the rope binding rod 301 are rotatably connected to the first mounting post 101 through bearings. The rope binding rod 301 passes through the baffle 302 and is fixedly connected to the baffle 302. The first mounting post 101 is provided with symmetrical vertical grooves 303 on the side near the second mounting post 102. The rope 200 passes through the vertical groove 303 through the first mounting post 101 to the inside of the first mounting post 101 and is fixedly connected to the rope binding rod 301.

[0041] In this embodiment, the rope-binding rod 301 rotates to wind the rope 200 into the first mounting post 101, thereby protecting the wound rope 200 and extending its service life.

[0042] In a preferred embodiment, please refer to Figures 1-3The first mounting post 101 is internally equipped with a transmission mechanism 400, which consists of a driving gear 401, a first driven gear 402, a second driven gear 403, a third driven gear 404, a rotating rod 405, a first bevel gear 406, and a second bevel gear 407. The inner wall of the first mounting post 101 is rotatably connected to the driving gear 401, the first driven gear 402, the second driven gear 403, and the third driven gear 404 via bearings. The driving gear 401 is respectively connected to the first driven gear 406. The driving gear 402 meshes with the second driven gear 403, and the second driven gear 403 meshes with the third driven gear 404. A second bevel gear 407 is fixedly installed on the outside of the rope rod 301. A first bevel gear 406 meshes with the outside of the second bevel gear 407. A rotating rod 405 is fixedly installed on the side of the first bevel gear 406. The rotating rod 405 passes through the driving gear 401 and is fixedly connected to the driving gear 401. The rotating rod 405 passes through the first mounting post 101 and is rotatably connected to the first mounting post 101.

[0043] In this embodiment, rotating the lever 405 can drive the first bevel gear 406 to rotate, the first bevel gear 406 to rotate, the second bevel gear 407 to rotate, the second bevel gear 407 to rotate, and the rope-binding rod 301 to rotate. At the same time, rotating the lever 405 can drive the driving gear 401 to rotate, the driving gear 401 to rotate, the first driven gear 402 and the second driven gear 403 to rotate, and the second driven gear 403 to rotate, and the third driven gear 404 to rotate. The first driven gear 402 and the third driven gear 404 rotate in opposite directions.

[0044] In a preferred embodiment, please refer to Figures 1-4 A hand crank assembly 500 is provided on the outside of the first mounting post 101. The hand crank assembly 500 consists of a rotating plate 501, a first connecting rod 502, a fixing plate 503, and a rotating cylinder 504. The rotating plate 501 is fixedly installed on the side of the rotating rod 405 away from the first bevel gear 406. The first connecting rod 502 is fixedly installed on the other side of the rotating plate 501. The fixing plate 503 is fixedly installed on the other side of the first connecting rod 502. The rotating cylinder 504 is rotatably connected to the first connecting rod 502. The outer side of the rotating cylinder 504 is provided with anti-slip texture.

[0045] In this embodiment, when the user rotates the drum 504, the first connecting rod 502, the rotating plate 501 and the rotating rod 405 can all rotate along the central axis of the rotating rod 405, thereby cooperating with the transmission mechanism 400 to drive the rope assembly 300 to wind up the rope 200.

[0046] In a preferred embodiment, please refer to Figures 1-4A limiting mechanism 600 is provided on the side of the first mounting column 101. The limiting mechanism 600 consists of a lifting plate 601, a second connecting rod 602, a U-shaped plate 603, a limiting plate 604, and a return spring 605. A U-shaped plate 603 is fixedly provided on the side of the first mounting column 101. A lifting plate 601 is provided above the U-shaped plate 603. A second connecting rod 602 is fixedly provided on the bottom surface of the lifting plate 601. The second connecting rod 602 passes through the U-shaped plate 603 and is slidably connected to the U-shaped plate 603. A limiting plate 604 is fixedly provided on the bottom surface of the second connecting rod 602. A slot for the rotating plate 501 is provided at the bottom of the limiting plate 604. A symmetrical return spring 605 is fixedly provided on the top surface of the limiting plate 604. The other end of the return spring 605 is fixedly connected to the U-shaped plate 603.

[0047] In this embodiment, pulling the lifting plate 601 can drive the second connecting rod 602 and the limiting plate 604 to move upward, compressing the return spring 605. When the compression of the return spring 605 reaches its maximum, it releases the limit on the rotating plate 501, making it convenient for the user to rotate the rotating drum 504. During the use of the banner or after the rope assembly 300 has finished winding the rope 200, in order to prevent the rope rod 301 from continuing to rotate, rotating the rotating drum 504 drives the rotating plate 501 to align with the slot. The user releases the lifting plate 601, causing the return spring 605 to push the limiting plate 604 downward. The rotating plate 501 is engaged with the bottom of the limiting plate 604 to prevent the rotating plate 501 from continuing to rotate, thereby limiting the transmission mechanism 400 and preventing the rope rod 301 from continuing to rotate.

[0048] In a preferred embodiment, please refer to Figures 1-3 The first mounting post 101 is equipped with a guide mechanism 700, which consists of a fixed block 701, a lifting frame 702, and a lifting block 703. Fixed blocks 701 are fixedly installed on the sides of the first driven gear 402 and the third driven gear 404. The first mounting post 101 is equipped with a symmetrical lifting frame 702. The left and right sides of the lifting frame 702 are respectively provided with a first through hole and a sliding groove. The side of the lifting frame 702 is fixedly provided with a lifting block 703 that is adapted to the vertical groove 303. The lifting block 703 is slidably connected to the first mounting post 101 through the vertical groove 303. The front and rear sides of the lifting frame 702 and the side near the lifting block 703 are respectively slidably connected to the inner wall of the first mounting post 101. The side of the lifting block 703 is provided with a second through hole that connects to the first through hole. The rope 200 passes through the first through hole and the second through hole and passes through the lifting frame 702 and the lifting block 703 respectively. The sliding groove is adapted to the fixed block 701. The fixed block 701 is movably connected to the lifting frame 702 through the sliding groove.

[0049] In this embodiment, rotating the drum 504 drives the rope-binding rod 301 to wind up the rope 200, which in turn drives the first driven gear 402 and the third driven gear 404 to rotate, thereby driving the fixed block 701 to rotate. The rotation of the fixed block 701 drives the lifting frame 702 and the lifting block 703 to move up and down. The lifting frame 702, together with the lifting block 703, can drive the rope 200 to move up and down while winding up the rope 200, so that the rope 200 is wound up more evenly on the outer surface of the rope-binding rod 301, and avoids the rope 200 being too concentrated in the same part on the outer surface of the rope-binding rod 301 during winding.

[0050] The working principle of this utility model is as follows:

[0051] When using the device, the support plate 104 of the second mounting column 102 is placed on the ground and fixed. The first mounting column 101 is lifted and the lifting plate 601 is pulled upward. The lifting plate 601 moves upward, causing the second connecting rod 602 and the limiting plate 604 to move upward. The return spring 605 is compressed. When the compression of the return spring 605 reaches its maximum, it releases the limit on the rotating plate 501. The user rotates the rotating cylinder 504, causing the first connecting rod 502, the rotating plate 501, and the rotating rod 405 to rotate along the central axis of the rotating rod 405. The rotation of the rotating rod 405 can drive the first bevel gear 406 to rotate. The rotation of the first bevel gear 406 drives the second bevel gear 407 to rotate. The rotation of the second bevel gear 407 drives the bundle... The rope rod 301 rotates, and the rope tie rod 301 rotates to unfold the rope 200. The user moves the first mounting post 101 away from the second mounting post 102 until the first mounting post 101 moves to the designated position. The rotating drum 504 drives the rotating plate 501 to align with the slot. The user releases the lifting plate 601, causing the return spring 605 to push the limiting plate 604 downward. The rotating plate 501 is locked to the bottom of the limiting plate 604 to prevent the rotating plate 501 from continuing to rotate, thereby limiting the transmission mechanism 400 and preventing the rope tie rod 301 from continuing to rotate. The support plate 104 of the first mounting post 101 is placed on the ground for fixation, making it convenient for the user to hang the banner on the rope 200.

[0052] When the device is finished, remove the banner, lift the first mounting post 101, and pull the lifting plate 601 upward to release the restriction on the rotating plate 501. The user rotates the rotating drum 504, causing the rotating rod 405 and the rope-binding rod 301 to rotate, thereby winding up the rope 200. Simultaneously, the rotating rod 405 drives the driving gear 401 to rotate, which in turn drives the first driven gear 402 and the second driven gear 403 to rotate. The second driven gear 403 then drives the third driven gear 404 to rotate. The first driven gear 402 and the third driven gear 404 rotate in opposite directions. The rotation of the first driven gear 402 and the third driven gear 404 drives the fixing block 701 to rotate, which in turn moves the lifting frame 702 and the lifting block 703 up and down. The lifting frame 702, in conjunction with the lifting block 703, can move the rope 200 up and down. While the rope is being wound up, the rope 200 moves up and down, making it more evenly wound on the outer surface of the rope-binding rod 301. This prevents the rope 200 from being too concentrated in the same area on the outer surface of the rope-binding rod 301 during winding. The rotation of the rope-binding rod 301 can wind the rope 200 into the first mounting post 101, thus protecting the wound rope 200 and extending its service life. When the rope-binding assembly 300 finishes winding the rope 200, the rotating drum 504 drives the rotating plate 501 to align with the slot. The user releases the lifting plate 601, causing the return spring 605 to push the limiting plate 604 downward. The rotating plate 501 engages with the bottom of the limiting plate 604, preventing the rotating plate 501 from continuing to rotate, thereby limiting the transmission mechanism 400 and preventing the rope-binding rod 301 from continuing to rotate.

[0053] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A banner support for sports events characterised in that: Include: Supporting mechanism (100), the supporting mechanism (100) includes first mounting column (101), second mounting column (102), support rod (103), support plate (104) and box door (105), the second mounting column (102) side fixedly connected with rope (200); Rope assembly (300), the rope assembly (300) is arranged in the first mounting column (101), and the rope assembly (300) is convenient for winding the rope (200) to the inside of the first mounting column (101); Transmission mechanism (400), the transmission mechanism (400) is arranged in the first mounting column (101), and the transmission mechanism (400) is used to drive the rope assembly (300) to wind the rope (200); Limiting mechanism (600), the limiting mechanism (600) is arranged in the side of the first mounting column (101), and the limiting mechanism (600) is convenient for limiting the transmission mechanism (400); Guiding mechanism (700), the guiding mechanism (700) is arranged in the first mounting column (101), and the guiding mechanism (700) can avoid that the rope (200) is too concentrated when winding.

2. A banner support for sports events according to claim 1, characterised in that: The first mounting column (101) and the second mounting column (102) bottom are fixedly provided with support rod (103), the support rod (103) bottom is fixedly provided with support plate (104), and the second mounting column (102) front is hinged with box door (105).

3. The banner support of claim 1, wherein: The rope assembly (300) includes rope rod (301), baffle (302) and vertical groove (303), the first mounting column (101) is provided with rope rod (301) and symmetrical baffle (302) inside, the upper and lower ends of the rope rod (301) are rotatably connected with the first mounting column (101) through bearing respectively, the rope rod (301) penetrates the baffle (302) and is fixedly connected with the baffle (302), the side of the first mounting column (101) close to the second mounting column (102) is provided with symmetrical vertical groove (303), and the rope (200) penetrates the first mounting column (101) to the inside of the first mounting column (101) through the vertical groove (303) and is fixedly connected with the rope rod (301).

4. A banner support for sports events according to claim 3, characterised in that: The transmission mechanism (400) includes a driving gear (401), a first driven gear (402), a second driven gear (403), a third driven gear (404), a rotating rod (405), a first bevel gear (406), and a second bevel gear (407). The inner wall of the first mounting post (101) is rotatably connected to the driving gear (401), the first driven gear (402), the second driven gear (403), and the third driven gear (404) via bearings. The driving gear (401) is connected to the first driven gear (402) and the second driven gear. (403) meshes with the second driven gear (403) and the third driven gear (404). A second bevel gear (407) is fixedly provided on the outside of the rope rod (301). A first bevel gear (406) meshes with the outside of the second bevel gear (407). A rotating rod (405) is fixedly provided on the side of the first bevel gear (406). The rotating rod (405) passes through the driving gear (401) and is fixedly connected to the driving gear (401). The rotating rod (405) passes through the first mounting post (101) and is rotatably connected to the first mounting post (101).

5. A banner support for sports events according to claim 4, characterised in that: A hand crank assembly (500) is provided on the outside of the first mounting post (101). The hand crank assembly (500) includes a rotating plate (501), a first connecting rod (502), a fixing plate (503), and a rotating cylinder (504). The rotating plate (501) is fixedly provided on the side of the rotating rod (405) away from the first bevel gear (406). The first connecting rod (502) is fixedly provided on the other side of the rotating plate (501). The fixing plate (503) is fixedly provided on the other side of the first connecting rod (502). The rotating cylinder (504) is provided through the outside of the first connecting rod (502). The rotating cylinder (504) is rotatably connected to the first connecting rod (502).

6. The banner support of claim 1, wherein: The limiting mechanism (600) includes a lifting plate (601), a second connecting rod (602), a U-shaped plate (603), a limiting plate (604), and a return spring (605). A U-shaped plate (603) is fixedly installed on the side of the first mounting column (101). A lifting plate (601) is installed above the U-shaped plate (603). A second connecting rod (602) is fixedly installed on the bottom surface of the lifting plate (601). The second connecting rod (602) passes through the U-shaped plate (603) and is slidably connected to the U-shaped plate (603). A limiting plate (604) is fixedly installed on the bottom surface of the second connecting rod (602). A symmetrical return spring (605) is fixedly installed on the top surface of the limiting plate (604). The other end of the return spring (605) is fixedly connected to the U-shaped plate (603).

7. A banner support for sports events as defined in claim 4, characterized in that: The guide mechanism (700) comprises a fixed block (701), a lifting frame (702) and a lifting block (703), the first driven gear (402) and the third driven gear (404) are both fixedly provided with the fixed block (701), the first mounting column (101) is internally provided with symmetrical lifting frames (702), the lifting frames (702) are both provided with first through holes and sliding grooves on the left and right sides, the lifting frames (702) are fixedly provided with the lifting blocks (703) matched with vertical grooves (303) on the sides, the lifting blocks (703) are slidably connected with the first mounting column (101) through the vertical grooves (303), the lifting frames (702) are slidably connected with the inner walls of the first mounting column (101) on the front and back sides and the side close to the lifting blocks (703), the lifting blocks (703) are provided with second through holes communicated with the first through holes on the sides, the sliding grooves are matched with the fixed blocks (701), and the fixed blocks (701) are movably connected with the lifting frames (702) through the sliding grooves.

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