A rotating LED billboard

Abstract

This invention discloses a rotating LED billboard, comprising a column, a bearing seat fixedly mounted on the top of the column, a bearing body rotatably connected to the middle of the bearing seat, a clamping cover fixedly mounted on the top of the bearing seat by bolts, a slip ring fixedly mounted at the center of the top of the clamping cover, a support assembly fixedly mounted on the circumferential surface of the bearing body, and a cylindrical billboard base fixedly mounted on the bearing body through the support assembly. Piston oil supply components are arrayed on the circumferential surface of the top of the column. During the rotation of the drive ring, grease within the drive ring lubricates the drive ring and the sliding ball. The drive ring, located on the inner wall of the annular groove, squeezes the sliding ball, driving the suction piston to reciprocate within the piston cylinder. As the lubricating oil in the temporary storage chamber increases, the lubricating oil drips through the L-shaped tube and dripping hole onto the upper convex ring, thereby achieving the purpose of automatically lubricating the bearing body during the rotation of the cylindrical billboard base.

Description

Technical Field

[0001] This invention relates to the field of billboard technology, specifically a rotating LED billboard. Background Technology

[0002] LED billboards are electronic displays made using light-emitting diode (LED) technology, widely used for commercial advertising, information dissemination, and brand promotion. They offer advantages such as high brightness, rich colors, energy efficiency, environmental friendliness, and long lifespan, making them suitable for various indoor and outdoor applications, including shop signs, shopping mall signage, concert support displays, and urban lighting.

[0003] Chinese patent CN113513679B, filed on May 24, 2021, discloses an LED billboard including a support platform. A motor is fixedly mounted inside the support platform via a fixing plate. The motor drives a rotating shaft to rotate. The rotating shaft is equipped with a shaped cam assembly, a magnetic ring, and planetary gears. The shaped cam assembly and the magnetic ring are fixedly connected by a fixing block. A groove is provided on the outer wall of the planetary gears. A guide rod is fixedly connected to the fixing plate. A sliding rod is slidably connected inside the guide rod. The sliding rod is tumbledly connected to the groove via a connecting rod. The rotation of the motor drives the planetary gears to rotate, thereby causing the sliding rod to move up and down. The sliding rod contacts and connects to the shaped cam assembly, causing the shaped cam assembly to move up and down. The rotation of the rotating shaft drives the shaped cam assembly to rotate. The shaped cam and spring cooperate to drive the reciprocating motion of the transmission rod, thereby causing the LED light panel fixedly connected to the transmission rod to reciprocate, achieving a three-dimensional advertising effect.

[0004] In this technical solution, the movement of the LED light panel is relatively complex. In order to ensure the stable movement of the LED light panel, it is necessary to apply lubricating oil to the planetary gears, cams and other structures. However, the planetary gears, cams and other structures are enclosed inside the first cylinder and the support cylinder, making it inconvenient to lubricate between the structures. Therefore, further improvements can be made. Summary of the Invention

[0005] The purpose of this invention is to provide a rotating LED billboard to solve the problems mentioned in the background art.

[0006] This invention provides the following technical solution: a rotating LED billboard, comprising a column, a bearing seat fixedly installed at the top of the column, a bearing body rotatably connected to the middle of the bearing seat, a clamping cover fixedly installed at the top of the bearing seat by bolts, and the bottom end of the bearing seat and the clamping cover clamping the two ends of the bearing body; a slip ring fixedly installed at the center of the top of the clamping cover, a support assembly fixedly installed on the circumferential surface of the bearing body, and a cylindrical billboard base fixedly installed on the bearing body through the support assembly, the slip ring being electrically connected to the cylindrical billboard base; an oil reservoir is provided inside the top of the column, containing lubricating oil, and piston oil delivery components are arrayed on the circumferential surface of the top of the column; an oil injection channel is provided inside the clamping cover, the output end of the piston oil delivery component is connected to the oil injection channel, and the piston oil delivery component injects lubricating oil into the bearing body through the oil injection channel; a return channel is provided inside the bearing seat, connected to the oil reservoir; and a rotation drive component is provided between the bottom of the piston oil delivery component and the support assembly.

[0007] Furthermore, the bearing housing includes a mounting base fixedly installed on the top of the column. An inner sleeve is welded at the center of the top of the mounting base. A lower clamping ring is sleeved on the outer side of the bottom end of the inner sleeve. The bearing body is sleeved on the outer side of the inner sleeve, and the inner diameter of the bearing body is larger than the outer diameter of the inner sleeve. The bottom end of the bearing body is attached to the lower clamping ring.

[0008] Furthermore, the return channel includes a retaining ring 1 fixedly installed on the circumferential surface of the mounting base. The retaining ring 1 is fitted onto the outer side of the bottom end of the bearing body, and the inner diameter of the retaining ring 1 is larger than the outer diameter of the bottom end of the bearing body. A guide bucket is welded between the bottom end of the retaining ring 1 and the outer wall of the column. An oil leakage groove 1 is arrayed through the top of the mounting base. The oil leakage groove 1 is located between the lower clamping ring and the retaining ring 1. An oil leakage groove 2 is arrayed through the circumferential surface of the top of the column. The oil leakage groove 2 is located above the bottom end of the guide bucket.

[0009] Furthermore, the bearing body includes a collar sleeved on the outside of the inner sleeve, the inner diameter of the collar being larger than the outer diameter of the inner sleeve, a lower convex ring fixedly installed at the bottom end of the collar, an upper convex ring fixedly installed at the top end of the collar, balls arranged in an array on opposite sides of the lower and upper convex rings, and a second retaining ring fixedly installed at the top edge of the upper convex ring.

[0010] Furthermore, the clamping cover includes a top cover fixedly installed on the top of the inner cylinder by bolts, a support platform fixedly installed at the center of the top of the top cover, a wire guide tube fixedly installed through the center of the top cover and the support platform, the wire guide tube being inserted through and connected to the center of the inner cylinder and the mounting base, the slip ring being fixedly installed on the top of the support platform, and an upper clamping ring being fixedly installed at the bottom of the top cover, the upper clamping ring being inserted into the second retaining ring, and the upper clamping ring being fitted against the top of the bearing body; arc-shaped pieces are provided on both the left and right sides of the middle part of the column, and a wire guide hole is opened through one of the arc-shaped pieces.

[0011] Furthermore, the oil injection channel includes a temporary storage cavity opened in the support platform. L-shaped tubes are arranged in an array on the circumferential surface of the support platform. The bottom end of the L-shaped tubes is connected to the top cover. The top end of the L-shaped tubes is connected to the lowest point of the temporary storage cavity. The top cover is provided with an array of oil drip holes. The oil drip holes pass through the edge of the conduit and are connected to the L-shaped tubes. The bottom of the top cover is fixed with an array of connecting pipes, which are connected to the temporary storage cavity.

[0012] Furthermore, the support assembly includes an array of crossbeams fixed to the outer wall of the bearing body. Each crossbeam has a pad fixedly mounted on its top, and a guide rail fixedly mounted on the top of the pad. An adjusting ring is coaxially arranged on the outer side of the bearing body, passing between the pad and the guide rail. A fastening bolt is threadedly connected to the top of the guide rail away from the bearing body, and the bottom end of the fastening bolt is attached to the adjusting ring. A slider is slidably connected inside the guide rail, and a sliding column is fixedly mounted on the bottom of the slider. An array of inclined grooves is formed on the adjusting ring, and the sliding column is slidably connected in the inclined grooves. An L-shaped clamping arm is fixedly mounted on the top of each slider, and the L-shaped clamping arm clamps the outer side of the collector ring. A wire clamp is fixedly mounted on the top of the L-shaped clamping arm.

[0013] Furthermore, the cylindrical billboard base is coaxially arranged with the bearing body, an LED light panel is fixedly installed on the outer wall of the cylindrical billboard base, a rain cover is inserted into the top of the cylindrical billboard base, and the end of the crossbeam away from the bearing body is fixedly installed on the inner wall of the cylindrical billboard base.

[0014] Furthermore, the oil storage section includes a bottom support ring fixedly installed on the inner wall of the upper half of the column. A retaining tube is welded to the inner edge of the bottom support ring, and the lubricating oil is stored between the outer wall of the retaining tube and the inner wall of the column. The piston oil delivery component includes a piston cylinder arrayed and fixed on the outer wall of the column. A suction piston is slidably connected to the bottom of the piston cylinder. An oil injection pipe and an oil inlet pipe are connected to the top of the piston cylinder. The oil injection pipe and the oil inlet pipe are fixed through the column surface, and the bottom end of the oil inlet pipe is located inside the oil storage section. The oil injection pipe is fixed through the mounting base, and the oil injection pipe is connected to the connecting pipe by a plug-in connection. A one-way valve is provided on the oil injection pipe, and a two-way valve is provided on the oil inlet pipe.

[0015] Furthermore, the rotation drive component includes a vertical rod fixedly installed at the bottom of the crossbeam, a drive ring fixedly installed at the bottom end of the vertical rod, the drive ring being coaxially arranged with the column, an annular groove being formed on the inner wall of the drive ring, the annular groove being wavy; an arc-shaped seat is attached to the inner wall of the drive ring, the arc-shaped seat being fixedly installed at the bottom of the suction piston, a sliding ball being fixedly installed on the surface of the arc-shaped seat, the sliding ball being slidably connected in the annular groove; the rotation drive component also includes a motor fixedly installed on the surface of the column, a drive gear being connected to the top output end of the motor, an annular gear being fixedly installed on the bottom end of the drive ring, the drive gear and the annular gear meshing with each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: During the rotation of the drive ring, the grease inside the drive ring lubricates the drive ring and the sliding ball. The drive ring, located on the inner wall of the annular groove, squeezes the sliding ball, causing the suction piston to reciprocate within the piston cylinder. When the suction piston moves downward relative to the piston cylinder, the lubricating oil in the oil reservoir passes through the oil inlet pipe and the second check valve and enters the piston cylinder. When the suction piston moves upward relative to the piston cylinder, the lubricating oil in the piston cylinder passes through the oil injection pipe and the first check valve and the connecting pipe. The lubricating oil enters the temporary storage chamber; as the amount of lubricating oil in the temporary storage chamber increases, the lubricating oil drips onto the upper convex ring through the L-shaped tube and the drip hole. Through the blocking action of the second confining ring, the lubricating oil flows from the top of the upper convex ring to the inner sleeve and lubricates the upper ball bearings; then, the lubricating oil flows through the gap between the collar and the inner sleeve to the bottom ball bearings and lubricates the bottom ball bearings. Finally, the excess lubricating oil flows back to the oil storage section through the first and second oil drain grooves, thereby achieving the purpose of automatically lubricating the bearing body during the rotation of the cylindrical billboard base.

[0017] First, place the collar on the outside of the inner cylinder, ensuring the bottom ball bearings are against the top of the lower clamping ring. Pass the conduit through the center of the inner cylinder, mounting base, and enclosure tube. Place the top cover against the top of the inner cylinder, ensuring the upper clamping ring is against the upper ball bearings. Then, secure the top cover to the top of the inner cylinder with bolts. Remove the two arc-shaped pieces, allowing the wire harness inside the conduit to pass through the wire hole. Then, secure the two arc-shaped pieces to the column with bolts. Finally, from the bottom of the cylindrical billboard base, secure the bottom of the vertical rod with bolts. The end is fixed to the outer wall of the drive ring; rotate the adjusting ring from the top opening of the cylindrical billboard base. The adjusting ring is located on the inner wall of the inclined groove and squeezes the sliding column, causing the slider to slide along the guide rail, so that the L-shaped clamping arm is clamped on the outer ring of the current collector ring. Tighten the fastening bolt to limit the adjustment ring. Then, connect the current collector ring to the rain cover and limit the wire with the wire clamp. Finally, seal the cylindrical billboard base with the rain cover; thus achieving the purpose of easy assembly and subsequent maintenance. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the column and bearing seat of the present invention;

[0021] Figure 4 This is a schematic diagram of the main cross-sectional structure of the bearing housing of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the bearing housing, bearing body, and clamping cover of the present invention.

[0023] Figure 6 This is a schematic diagram of the main cross-sectional structure at the top of the column of the present invention;

[0024] Figure 7 For the present invention Figure 6 Enlarged structural diagram of section A in the middle;

[0025] Figure 8 This is a three-dimensional structural diagram of the support component of the present invention;

[0026] Figure 9 This is a three-dimensional exploded view of the support component of the present invention;

[0027] Figure 10 This is a three-dimensional structural diagram of the clamping cap, piston oil delivery component, and rotary drive component of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the piston oil delivery component and the rotation drive component of the present invention.

[0029] In the diagram: 100, column; 200, bearing housing; 300, bearing body; 400, clamping cover; 500, slip ring; 600, support assembly; 700, cylindrical billboard base; 800, piston oil delivery component; 900, rotation drive component;

[0030] 101. Arc-shaped piece; 102. Threading hole; 103. Bottom support ring; 104. Enclosure tube; 201. Mounting base; 202. Inner tube; 203. Lower clamping ring; 204. Enclosure ring one; 205. Guide hopper; 206. Oil leakage groove one; 207. Oil leakage groove two;

[0031] 301. Collar; 302. Lower convex ring; 303. Upper convex ring; 304. Ball bearing; 305. Enclosure ring two; 401. Top cover; 402. Support platform; 403. Conduit; 404. Upper clamping ring; 405. Temporary storage cavity; 406. L-shaped tube; 407. Oil drip hole; 408. Connecting pipe;

[0032] 601. Crossbeam; 602. Pad; 603. Guide rail; 604. Adjusting ring; 605. Fastening bolt; 606. Inclined groove; 607. Slider; 608. Sliding column; 609. L-shaped clamp arm; 610. Wire clamp;

[0033] 701. LED light panel; 702. Rain cover; 801. Piston cylinder; 802. Suction piston; 803. Fuel injection pipe; 804. One-way valve 1; 805. Fuel inlet pipe; 806. One-way valve 2;

[0034] 901. Vertical rod; 902. Drive ring; 903. Annular groove; 904. Arc-shaped seat; 905. Sliding ball; 906. Motor; 907. Drive gear; 908. Ring gear. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-2 This invention provides a technical solution: a rotating LED billboard, including a column 100, a bearing seat 200 fixedly installed on the top of the column 100, a bearing body 300 rotatably connected to the middle of the bearing seat 200, a clamping cover 400 fixedly installed on the top of the bearing seat 200 by bolts, the bottom end of the bearing seat 200 and the clamping cover 400 clamping the two ends of the bearing body 300; a slip ring 500 fixedly installed at the center of the top of the clamping cover 400, a support assembly 600 fixedly installed on the circumferential surface of the bearing body 300, and a cylindrical billboard fixedly installed on the bearing body 300 through the support assembly 600. The billboard base 700 and the slip ring 500 are electrically connected to the cylindrical billboard base 700; an oil reservoir is provided at the top of the column 100, and lubricating oil is provided in the oil reservoir; piston oil delivery components 800 are arranged in an array on the circumferential surface of the top of the column 100; an oil injection channel is provided in the clamping cover 400; the output end of the piston oil delivery component 800 is connected to the oil injection channel; the piston oil delivery component 800 injects lubricating oil into the bearing body 300 through the oil injection channel; a return channel is provided in the bearing seat 200, and the return channel is connected to the oil reservoir; a rotation drive component 900 is provided between the bottom of the piston oil delivery component 800 and the support assembly 600.

[0037] The rotating drive component 900 drives the piston oil delivery component 800 to draw lubricating oil from the oil reservoir and coat the bearing body 300 with lubricating oil through the oil injection channel; excess lubricating oil on the surface of the bearing body 300 returns to the oil reservoir through the return channel. During the above process, the rotating drive component 900 simultaneously drives the cylindrical billboard base 700 to rotate.

[0038] Please see Figures 3-5 The bearing housing 200 includes a mounting base 201 fixedly installed on the top of the column 100, the diameter of the mounting base 201 being larger than the diameter of the column 100. An inner sleeve 202 is welded to the center of the top of the mounting base 201, and a lower clamping ring 203 is sleeved on the outer side of the bottom end of the inner sleeve 202. The lower clamping ring 203 is welded to the mounting base 201, and the inner diameter of the lower clamping ring 203 is equal to the outer diameter of the inner sleeve 202.

[0039] The bearing body 300 is sleeved on the outside of the inner sleeve 202, and the bottom end of the bearing body 300 is attached to the lower clamping ring 203. The inner diameter of the bearing body 300 is larger than the outer diameter of the inner sleeve 202, so there is a gap between the bearing body 300 and the inner sleeve 202, which allows lubricating oil to pass through.

[0040] The return channel includes a retaining ring 204 fixedly installed on the circumferential surface of the mounting base 201. The retaining ring 204 is sleeved on the outer side of the bottom end of the bearing body 300, and the inner diameter of the retaining ring 204 is larger than the outer diameter of the bottom end of the bearing body 300. A guide bucket 205 is welded between the bottom end of the retaining ring 204 and the outer wall of the column 100. The inner diameter of the guide bucket 205 gradually decreases from top to bottom. An oil leakage groove 206 is arrayed through the top of the mounting base 201. The oil leakage groove 206 is located between the lower clamping ring 203 and the retaining ring 204. An oil leakage groove 207 is arrayed through the top circumferential surface of the column 100. The oil leakage groove 207 is located above the bottom end of the guide bucket 205.

[0041] Lubricating oil drips onto the top of the bearing body 300 through the oil injection channel and flows downward along the gap between the bearing body 300 and the inner sleeve 202. Then, the lubricating oil passes through the gap between the bearing body 300 and the lower clamping ring 203 and enters the interior of the first retaining ring 204. Finally, the lubricating oil flows back to the oil storage section through the first oil leakage groove 206 and the second oil leakage groove 207.

[0042] Please see Figures 5-7The bearing body 300 includes a collar 301 sleeved on the outside of the inner sleeve 202. The inner diameter of the collar 301 is larger than the outer diameter of the inner sleeve 202. A lower convex ring 302 is fixedly installed at the bottom end of the collar 301, and an upper convex ring 303 is fixedly installed at the top end of the collar 301. Roller balls 304 are arranged in an array on opposite sides of the lower convex ring 302 and the upper convex ring 303. Specifically, the lower convex ring 302 and the lower clamping ring 203 clamp the bottom ring of roller balls 304; the upper convex ring 303 and the upper clamping ring 404 clamp the upper ring of roller balls 304. A second retaining ring 305 is fixedly installed on the top edge of the upper convex ring 303. When lubricating oil drips onto the top of the upper convex ring 303 through the oil injection channel, it is blocked from the side by the second retaining ring 305, so that the lubricating oil flows into the inner sleeve 202 to lubricate the upper ring of balls 304. Then, the lubricating oil passes through the gap between the collar 301 and the inner sleeve 202 and flows to the bottom ring of balls 304, thereby coating the two layers of balls 304 with lubricating oil for lubrication.

[0043] Please see Figures 5-7 The clamping cover 400 includes a top cover 401 fixedly mounted on the top of the inner cylinder 202 by bolts. A support platform 402 is fixedly mounted at the center of the top of the top cover 401. A conduit 403 is fixedly inserted through the center of the top cover 401 and the support platform 402. The conduit 403 is inserted through the center of the inner cylinder 202 and the mounting base 201. A slip ring 500 is fixedly mounted on the top of the support platform 402. Arc-shaped pieces 101 are provided on both the left and right sides of the middle of the column 100. One of the arc-shaped pieces 101 has a through hole 102. The wire harness connected to the slip ring 500 passes through the conduit 403 and exits through the through hole 102.

[0044] The top cover 401 is fixedly installed with an upper clamping ring 404 at the bottom. The upper clamping ring 404 is inserted into the second enclosure ring 305 and is attached to the top of the bearing body 300. Specifically, the upper clamping ring 404 is attached to the ball 304 on the top of the upper convex ring 303.

[0045] The oil injection channel includes a temporary storage cavity 405 formed within a support platform 402. L-shaped tubes 406 are arrayed on the circumferential surface of the support platform 402, with their bottom ends connected to a top cover 401. The top ends of the L-shaped tubes 406 connect to the lowest point of the temporary storage cavity 405. An array of oil drip holes 407 are formed on the top cover 401, passing through the edge of a conduit 403 and communicating with the L-shaped tubes 406. A connecting pipe 408 is fixedly arrayed at the bottom of the top cover 401, communicating with the temporary storage cavity 405 and connecting to the output end of the piston oil delivery component 800. After the piston oil delivery component 800 draws lubricating oil from the oil reservoir, it injects it into the temporary storage cavity 405 through the connecting pipe 408. Then, the lubricating oil drips along the L-shaped tubes 406 and the oil drip holes 407 onto the upper convex ring 303.

[0046] Please see Figures 8-9 The support assembly 600 includes arrays of crossbeams 601 fixed to the outer wall of the bearing body 300, with the crossbeams 601 arranged radially along the bearing body 300. A pad 602 is fixedly mounted on the top of each crossbeam 601, and a guide rail 603 is fixedly mounted on the top of the pad 602. An adjusting ring 604 is coaxially disposed on the outer side of the bearing body 300, passing between the pad 602 and the guide rail 603. The pad 602 and the guide rail 603 cooperate to clamp and limit the adjusting ring 604, ensuring that the adjusting ring 604 can only rotate between the pad 602 and the guide rail 603.

[0047] The top of the guide rail 603 away from the bearing body 300 is threaded with a fastening bolt 605. The bottom end of the fastening bolt 605 is attached to the adjusting ring 604. By tightening the fastening bolt 605, the fastening bolt 605 is pressed against the surface of the adjusting ring 604, which can suppress the rotation of the adjusting ring 604.

[0048] A slider 607 is slidably connected within the guide rail 603. A sliding column 608 is fixedly mounted on the bottom of the slider 607. An inclined groove 606 is arrayed on the adjusting ring 604, and the sliding column 608 is slidably connected within the inclined groove 606. Thus, when the adjusting ring 604 rotates, the adjusting ring 604, located on the inner wall of the inclined groove 606, presses against the sliding column 608, causing the slider 607 to slide within the guide rail 603.

[0049] Each slider 607 has an L-shaped clamping arm 609 fixedly installed on its top. The L-shaped clamping arm 609 clamps the outside of the slip ring 500. A wire clamp 610 is fixedly installed on the top of the L-shaped clamping arm 609. The wire clamp 610 has a C-shaped cross-section. The cylindrical billboard base 700 is coaxially arranged with the bearing body 300. An LED light panel 701 is fixedly installed on the outer wall of the cylindrical billboard base 700. A rain cover 702 is inserted into the top of the cylindrical billboard base 700. The end of the crossbeam 601 away from the bearing body 300 is fixedly installed on the inner wall of the cylindrical billboard base 700.

[0050] The cylindrical billboard base 700 is supported by the bearing body 300 and the crossbeam 601, and the LED light panel 701 is electrically connected to the slip ring 500. The L-shaped clamping arm 609 holds the slip ring 500 in place, so that the outer ring of the slip ring 500 rotates synchronously with the cylindrical billboard base 700, preventing the wires between the slip ring 500 and the rain cover 702 from being pulled. Additionally, the wire clamp 610 further limits and secures the wires.

[0051] Please see Figure 6 and Figures 10-11The oil storage section includes a bottom support ring 103 fixedly installed on the inner wall of the upper half of the column 100. A retaining tube 104 is welded to the inner edge of the bottom support ring 103. A conduit 403 passes through the inside of the retaining tube 104, and the lubricating oil is stored between the outer wall of the retaining tube 104 and the inner wall of the column 100. The piston oil delivery component 800 includes piston cylinders 801 arrayed and fixed on the outer wall of the column 100. A suction piston 802 is slidably connected to the bottom of the piston cylinder 801. A raised rib (not shown in the figure) is provided on the circumferential surface of the rod of the suction piston 802 to prevent the suction piston 802 from rotating relative to the piston cylinder 801 during the sliding process of the suction piston 802 relative to the piston cylinder 801.

[0052] The piston cylinder 801 is connected to an injection pipe 803 and an inlet pipe 805 at its top end. The injection pipe 803 and the inlet pipe 805 are fixed to the surface of the column 100, and the bottom end of the inlet pipe 805 is located inside the oil reservoir. The injection pipe 803 is fixed to the mounting base 201. The injection pipe 803 is connected to the connecting pipe 408 by plugging. A one-way valve 804 is provided on the injection pipe 803, and a two-way valve 806 is provided on the inlet pipe 805.

[0053] When the suction piston 802 moves downward relative to the piston cylinder 801, the lubricating oil in the oil reservoir passes through the oil inlet pipe 805 and the second check valve 806 and enters the piston cylinder 801; when the suction piston 802 moves upward relative to the piston cylinder 801, the lubricating oil in the piston cylinder 801 passes through the oil injection pipe 803, the first check valve 804, and the connecting pipe 408 and enters the temporary storage chamber 405.

[0054] Please see Figure 11 The rotation drive component 900 includes a vertical rod 901 fixedly installed at the bottom of the crossbeam 601. A drive ring 902 is fixedly installed at the bottom end of the vertical rod 901. Specifically, the bottom end of the vertical rod 901 is fixedly installed on the outer wall of the drive ring 902 by bolts. The drive ring 902 is coaxially arranged with the column 100. An annular groove 903 is formed on the inner wall of the drive ring 902. The annular groove 903 is wavy. The bottom end of the drive ring 902 is sealed, and the drive ring 902 contains lubricating grease.

[0055] An arc-shaped seat 904 is fitted onto the inner wall of the drive ring 902. The arc-shaped seat 904 is fixedly installed at the bottom of the suction piston 802. A sliding ball 905 is fixedly installed on the surface of the arc-shaped seat 904, and the sliding ball 905 is slidably connected in the annular groove 903. The rotation drive component 900 also includes a motor 906 fixedly installed on the surface of the column 100. The top output end of the motor 906 is connected to a drive gear 907, and an annular gear 908 is fixedly installed on the bottom end of the drive ring 902. The drive gear 907 and the annular gear 908 mesh with each other. Thus, when the motor 906 drives the drive gear 907 to rotate, and the annular gear 908 and the drive ring 902 rotate, the drive ring 902, located on the inner wall of the annular groove 903, squeezes the sliding ball 905, causing the suction piston 802 to reciprocate in the vertical direction. During this process, the grease inside the drive ring 902 lubricates the sliding ball 905 and the drive ring 902.

[0056] Working principle: During assembly, the collar 301 is first placed on the outside of the inner tube 202, so that the bottom ball bearing 304 is attached to the top of the lower clamping ring 203, and the conduit 403 passes through the center of the inner tube 202, the mounting base 201 and the enclosure tube 104. The top cover 401 is attached to the top of the inner tube 202, and the upper clamping ring 404 is attached to the upper ball bearing 304. Then, the top cover 401 is fixed to the top of the inner tube 202 with bolts.

[0057] Remove the two arc-shaped pieces 101, and let the wire harness in the conduit 403 pass through the wire hole 102. Then, fix the two arc-shaped pieces 101 to the column 100 with bolts. Then, fix the bottom end of the plumb rod 901 to the outer wall of the drive ring 902 from the bottom of the cylindrical billboard base 700 with bolts.

[0058] Rotate the adjusting ring 604 from the top opening of the cylindrical billboard base 700. The adjusting ring 604 presses against the sliding column 608 at the inner wall of the inclined groove 606, causing the slider 607 to slide along the guide rail 603, so that the L-shaped clamping arm 609 clamps the outer ring of the current collector ring 500. Tighten the fastening bolt 605 to limit the adjusting ring 604. Then, connect the current collector ring 500 to the rain cover 702 and limit the wire through the wire clamp 610. Finally, seal the cylindrical billboard base 700 through the rain cover 702.

[0059] In use: the motor 906 drives the drive gear 907 to rotate, which in turn drives the ring gear 908 and the drive ring 902 to rotate. Through the connection between the vertical rod 901 and the crossbeam 601, the cylindrical billboard base 700 is driven to rotate.

[0060] During the rotation of the drive ring 902, the grease inside the drive ring 902 lubricates the drive ring 902 and the sliding ball 905. The drive ring 902, located on the inner wall of the annular groove 903, squeezes the sliding ball 905, causing the suction piston 802 to reciprocate within the piston cylinder 801. When the suction piston 802 moves downward relative to the piston cylinder 801, the lubricating oil in the oil reservoir passes through the oil inlet pipe 805 and the second check valve 806 and enters the piston cylinder 801. When the suction piston 802 moves upward relative to the piston cylinder 801, the lubricating oil in the piston cylinder 801 passes through the oil injection pipe 803, the first check valve 804, and the connecting pipe 408 and enters the temporary storage chamber 405.

[0061] As the lubricating oil in the temporary storage chamber 405 increases, the lubricating oil drips through the L-shaped tube 406 and the drip hole 407 onto the upper convex ring 303. Through the blocking effect of the second confining ring 305, the lubricating oil flows from the top of the upper convex ring 303 to the inner insert 202 and lubricates the upper ball bearings 304. Then, the lubricating oil flows through the gap between the collar 301 and the inner insert 202 to the bottom ball bearings 304 and lubricates them. Finally, the excess lubricating oil flows back into the oil storage section through the first oil drain groove 206 and the second oil drain groove 207.

Claims

1. A rotating LED billboard, comprising a column (100), characterized in that: A bearing seat (200) is fixedly installed on the top of the column (100), and a bearing body (300) is rotatably connected to the middle of the bearing seat (200). A clamping cover (400) is fixedly installed on the top of the bearing seat (200) by bolts. The bottom end of the bearing seat (200) and the clamping cover (400) are clamped on both ends of the bearing body (300). A slip ring (500) is fixedly installed at the top center of the clamping cover (400), a support assembly (600) is fixedly installed on the circumferential surface of the bearing body (300), and a cylindrical billboard base (700) is fixedly installed on the bearing body (300) through the support assembly (600). The slip ring (500) is electrically connected to the cylindrical billboard base (700). The top of the column (100) is provided with an oil storage part containing lubricating oil. Piston oil delivery components (800) are arranged in an array on the circumferential surface of the top of the column (100). An oil injection channel is provided inside the clamping cover (400). The output end of the piston oil delivery component (800) is connected to the oil injection channel. The piston oil delivery component (800) injects lubricating oil into the bearing body (300) through the oil injection channel. A return channel is provided inside the bearing housing (200), and the return channel is connected to the oil storage section; A rotation drive (900) is provided between the bottom of the piston oil delivery component (800) and the support assembly (600).

2. The rotating LED billboard according to claim 1, characterized in that: The bearing housing (200) includes a mounting base (201) fixedly installed on the top of the column (100). An inner sleeve (202) is welded at the center of the top of the mounting base (201). A lower clamping ring (203) is sleeved on the outer side of the bottom end of the inner sleeve (202). The bearing body (300) is sleeved on the outer side of the inner sleeve (202), and the inner diameter of the bearing body (300) is larger than the outer diameter of the inner sleeve (202). The bottom end of the bearing body (300) is attached to the lower clamping ring (203).

3. A rotating LED billboard according to claim 2, characterized in that: The return channel includes a retaining ring (204) fixedly installed on the circumferential surface of the mounting base (201). The retaining ring (204) is sleeved on the outer side of the bottom end of the bearing body (300), and the inner diameter of the retaining ring (204) is larger than the outer diameter of the bottom end of the bearing body (300). A flow guide hopper (205) is welded between the bottom end of the first enclosure ring (204) and the outer wall of the column (100). An oil leakage groove (206) is arrayed through the top of the mounting base (201). The oil leakage groove (206) is located between the lower clamping ring (203) and the first enclosure ring (204). An oil leakage groove (207) is arrayed through the top circumferential surface of the column (100). The oil leakage groove (207) is located on the upper side of the bottom end of the flow guide hopper (205).

4. A rotating LED billboard according to claim 1, characterized in that: The bearing body (300) includes a collar (301) sleeved on the outside of the inner sleeve (202). The inner diameter of the collar (301) is larger than the outer diameter of the inner sleeve (202). A lower convex ring (302) is fixedly installed at the bottom end of the collar (301), and an upper convex ring (303) is fixedly installed at the top end of the collar (301). Roller balls (304) are arranged in an array on opposite sides of the lower convex ring (302) and the upper convex ring (303). A second retaining ring (305) is fixedly installed at the top edge of the upper convex ring (303).

5. A rotating LED billboard according to claim 1, characterized in that: The clamping cover (400) includes a top cover (401) fixedly installed on the top of the inner tube (202) by bolts. A support platform (402) is fixedly installed at the center of the top of the top cover (401). A conduit (403) is fixedly installed through the center of the top cover (401) and the support platform (402). The conduit (403) is inserted through the center of the inner tube (202) and the mounting base (201). The collector ring (500) is fixedly installed on the top of the support platform (402). An upper clamping ring (404) is fixedly installed at the bottom of the top cover (401). The upper clamping ring (404) is inserted into the second enclosure ring (305). The upper clamping ring (404) is attached to the top of the bearing body (300). The column (100) has arc-shaped pieces (101) on both the left and right sides of the middle part, and a wire hole (102) is opened through one of the arc-shaped pieces (101).

6. A rotating LED billboard according to claim 5, characterized in that: The oil injection channel includes a temporary storage cavity (405) opened in the support platform (402), and L-shaped tubes (406) are arranged in an array on the circumferential surface of the support platform (402). The bottom end of the L-shaped tubes (406) is connected to the top cover (401). The top end of the L-shaped tube (406) is connected to the lowest point of the temporary storage cavity (405). The top cover (401) is provided with an array of oil drip holes (407). The oil drip holes (407) pass through the edge of the wire tube (403) and are connected to the L-shaped tube (406). The bottom of the top cover (401) is fixed with an array of connecting pipes (408), which are connected to the temporary storage cavity (405).

7. A rotating LED billboard according to claim 1, characterized in that: The support assembly (600) includes an array of crossbeams (601) fixed to the outer wall of the bearing body (300), each crossbeam (601) having a pad (602) fixedly mounted on its top, a guide rail (603) fixedly mounted on the top of the pad (602), and an adjusting ring (604) coaxially disposed on the outer side of the bearing body (300), the adjusting ring (604) passing between the pad (602) and the guide rail (603); The top of the guide rail (603) away from the bearing body (300) is threaded with a fastening bolt (605), and the bottom end of the fastening bolt (605) is attached to the adjusting ring (604). A slider (607) is slidably connected inside the guide rail (603). A sliding column (608) is fixedly installed at the bottom of the slider (607). An inclined groove (606) is arrayed on the adjusting ring (604). The sliding column (608) is slidably connected inside the inclined groove (606). Each slider (607) is fixedly mounted with an L-shaped clamping arm (609) on its top. The L-shaped clamping arm (609) is clamped on the outside of the collector ring (500). A wire clamp (610) is fixedly mounted on the top of the L-shaped clamping arm (609).

8. A rotating LED billboard according to claim 7, characterized in that: The cylindrical billboard base (700) is coaxially arranged with the bearing body (300). An LED light panel (701) is fixedly installed on the outer wall of the cylindrical billboard base (700). A rain cover (702) is inserted into the top of the cylindrical billboard base (700). The end of the crossbeam (601) away from the bearing body (300) is fixedly installed on the inner wall of the cylindrical billboard base (700).

9. A rotating LED billboard according to claim 1, characterized in that: The oil storage unit includes a bottom support ring (103) fixedly installed on the inner wall of the upper half of the column (100). A retaining tube (104) is welded on the inner edge of the bottom support ring (103). The lubricating oil is stored between the outer wall of the retaining tube (104) and the inner wall of the column (100). The piston oil delivery component (800) includes piston cylinders (801) arrayed and fixed on the outer wall of the column (100). A suction piston (802) is slidably connected to the bottom of the piston cylinder (801). An oil injection pipe (803) and an oil inlet pipe (805) are connected to the top of the piston cylinder (801). The oil injection pipe (803) and the oil inlet pipe (805) are fixed through the surface of the column (100), and the bottom end of the oil inlet pipe (805) is located inside the oil storage section. The oil injection pipe (803) is fixed through the mounting base (201). The oil injection pipe (803) is connected to the connecting pipe (408) by a plug-in connection. The fuel injection pipe (803) is equipped with a one-way valve (804), and the fuel inlet pipe (805) is equipped with a one-way valve (806).

10. A rotating LED billboard according to claim 1, characterized in that: The rotation drive component (900) includes a vertical rod (901) fixedly installed at the bottom of the crossbeam (601), a drive ring (902) fixedly installed at the bottom end of the vertical rod (901), the drive ring (902) being coaxially arranged with the column (100), and an annular groove (903) being formed on the inner wall of the drive ring (902), the annular groove (903) being wavy. An arc-shaped seat (904) is attached to the inner wall of the drive ring (902). The arc-shaped seat (904) is fixedly installed at the bottom of the suction piston (802). A sliding ball (905) is fixedly installed on the surface of the arc-shaped seat (904). The sliding ball (905) is slidably connected in the annular groove (903). The rotation drive (900) also includes a motor (906) fixedly mounted on the surface of the column (100). The top output end of the motor (906) is connected to a drive gear (907), and a ring gear (908) is fixedly mounted on the bottom end of the drive ring (902). The drive gear (907) and the ring gear (908) mesh with each other.

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