High-speed self-lubricating heat-dissipating conductive slip ring

Abstract

The application relates to the technical field of conductive slip rings, and discloses a high-speed self-lubricating heat-dissipation type conductive slip ring which comprises a sealing cylinder, the inner side of the sealing cylinder is fixedly connected with a partition plate, the outer side of one end of the sealing cylinder is fixedly connected with a stator, the side, close to the stator, of the partition plate is fixedly connected with a limiting support, an oil pressure adjusting mechanism for adjusting the oil pressure of lubricating liquid in a large oil cavity is arranged on the partition plate, and a lubricating oil overflow collecting mechanism is arranged on the side, away from the limiting support, of the partition plate. The oil pressure adjusting mechanism is arranged, the compression spring is spaced, the excess oil liquid enters the sealing tube, and the leakage of the weak sealing part caused by the excessively high oil pressure is avoided. The mechanical full-passive adjusting structure does not need external energy and electric control elements, is fast in response, high in reliability, effectively maintains the stability of the oil pressure, reduces the lubricating oil leakage risk, avoids the interference of the high-pressure oil liquid on the contact force field of the brush wire, and guarantees the stability of signal transmission.

Description

Technical Field

[0001] This invention relates to the field of conductive slip ring technology, and more particularly to a high-speed self-lubricating and heat-dissipating conductive slip ring. Background Technology

[0002] High-speed conductive slip rings, as key devices for transmitting power and signals between rotating and stationary components, are widely used in high-end equipment such as radar systems, aero-engine testing, high-speed turntables, and medical CT scanners. As equipment rotational speeds continue to increase, the operating conditions of conductive slip rings become increasingly demanding, typically requiring speeds of 5000-15000 rpm and sampling accuracy of 1 kHz. The frictional heat generated between the core friction components—the brush filaments and the conductive ring plate—increases dramatically during high-speed relative sliding, leading to a significant rise in the temperature of the lubricating medium. Currently, some high-speed conductive slip rings employ oil lubrication, achieving liquid friction by immersing the brush filaments and ring plate in lubricating oil, and using a circulating oil cooling system to externally cool the frictional heat. This reduces friction and heat generation through lubrication and provides cooling through heat exchange. However, existing oil-cooled conductive slip rings commonly suffer from excessively high oil pressure in practical applications.

[0003] For example, Chinese invention patent CN121507513A discloses a high-speed conductive slip ring with double-layer full-enclosed cooling. Although this solution achieves external circulation cooling by setting cooling oil channels inside the housing and using the ceramic ball structure of the hybrid bearing, as the high-speed slip ring operates in the sealed cavity, the lubricating oil expands in volume due to heat, and the oil pressure increases. The high pressure makes the lubricating oil more likely to leak from weak points in the seal. The reduction in oil volume caused by leakage increases the frictional heat load borne by the lubricating oil per unit volume. In addition, the continuous interference of high-pressure oil on the contact force field of the brush filaments and the high-frequency fluctuation of contact pressure will affect signal transmission. For equipment such as radar or medical CT, this may cause blurred imaging or loss of control commands.

[0004] In view of this, a high-speed self-lubricating heat dissipation conductive slip ring that can solve the above problems is proposed. Summary of the Invention

[0005] To address the technical problem of excessively high oil pressure in oil-cooled conductive slip rings during practical applications, this invention provides a high-speed self-lubricating heat-dissipating conductive slip ring.

[0006] The present invention is achieved by the following technical solution: a high-speed self-lubricating heat dissipation conductive slip ring, including a sealing cylinder, a partition plate fixedly connected to the inner side of the sealing cylinder, a stator fixedly connected to the outer side of one end of the sealing cylinder, a limit support fixedly connected to the side of the partition plate near the stator, a large oil cavity formed between the partition plate and the stator, a brush ring mechanism provided between the limit support and the stator, an oil pressure regulating mechanism for regulating the oil pressure of the lubricating fluid in the large oil cavity provided on the partition plate, and a lubricating oil overflow collection mechanism provided on the side of the partition plate away from the limit support; The hydraulic pressure regulating mechanism includes a limiting sleeve fixedly connected to one side of the partition. A cylinder is rotatably connected to the inner side of the limiting sleeve. Multiple through-hole slots are arranged in a circular array on the outer side of the limiting sleeve. Multiple culvert slots are arranged in a circular array inside the cylinder. The end of each culvert slot near the limiting sleeve corresponds one-to-one with the through-hole slot on the outer side. The end of the cylinder away from the limiting sleeve passes through the partition along the central axis of the cylinder. A limiting cover plate is provided between the outer side of the end of the cylinder away from the limiting sleeve and the partition. A gear is fixedly connected to the side of the cylinder away from the limiting sleeve. A sealing tube is fixedly connected to the outer side of the sealing cylinder. A piston mechanism is provided inside the sealing tube. A connecting rod is fixedly connected to the upper side of the piston mechanism. A limiting block is fixedly connected to one end of the connecting rod. A slot is opened through the limiting block. A toothed plate is fixedly connected to one side of the slot. The toothed plate meshes with the gear. A limiting guide mechanism is provided on the upper side of the limiting block.

[0007] Preferably, the brush ring mechanism includes a second sealed bearing disposed inside the limiting support, a first sealed bearing disposed inside the stator, a conductive ring rotatably connected between the second sealed bearing and the first sealed bearing, and a brush filament conductive mechanism disposed outside the conductive ring.

[0008] Preferably, the brush wire conductive mechanism includes two brush mounting plates fixedly connected between the limiting support and the stator. The two brush mounting plates are symmetrically arranged, and each brush mounting plate has multiple linearly arrayed brush wires fixedly connected on both sides of the side closest to the conductive ring. The brush wires on the two brush mounting plates are arranged alternately on the outside of the conductive ring.

[0009] Preferably, a rotor is fixedly connected to the end of the conductive ring away from the limiting support, and the outer side of the rotor is rotatably connected to the stator.

[0010] Preferably, the lubricating oil overflow collection mechanism includes a cover plate fixedly connected to the side of the sealing cylinder away from the stator, a pressure relief valve is installed on the outside of the cover plate, a small oil cavity is formed between the cover plate and the partition plate, and the end of each culvert groove away from the small oil cavity is connected to the large oil cavity through a through hole groove.

[0011] Preferably, the piston mechanism includes a piston disposed inside the sealing tube, a plurality of sealing rings disposed between the outer side of the piston and the inner side of the sealing tube, a spring fixedly connected to the side of the piston away from the connecting rod, and a plug fixedly connected to one end of the sealing tube at the end of the spring away from the piston, the plug having a plurality of vent holes through it.

[0012] Preferably, the limiting guide mechanism includes a groove formed on the lower side of the limiting support, a rod slidably connected to the inner side of the groove, and one end of the rod being fixedly connected to one side of the limiting block.

[0013] Preferably, a first wire-passing groove is provided on the partition plate, and a second wire-passing groove is provided on the rotor.

[0014] Preferably, the outer side of the sealing cylinder is provided with multiple heat dissipation fins, which are distributed in a circumferential array.

[0015] Preferably, the outer side of the small oil cavity is connected to a No. 2 filling pipe, and the outer side of the large oil cavity is connected to a No. 1 filling pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes an oil pressure regulating mechanism. A piston mechanism within a sealed tube senses pressure changes in the large oil chamber caused by the high-temperature expansion of the lubricating oil. This pressure change is then transmitted sequentially through a connecting rod, a limiting block, and a gear plate to drive a rotating cylinder. This alters the relative position of the culvert groove on the cylinder and the through-hole groove on the limiting sleeve. When the oil pressure rises within a lower range, the piston is pushed downwards, compressing the spring and creating space for excess oil to enter the sealed tube, thus reducing pressure. When the temperature is too high and the expansion exceeds the pressure that the piston and spring can withstand at their maximum deformation, the culvert groove and the through-hole groove gradually align and connect, allowing high-pressure lubricating fluid to flow from the large oil chamber into the small oil chamber, thus relieving pressure and preventing leakage at weak points in the seal due to excessive oil pressure. This mechanical, fully passive regulating structure requires no external energy source or electronic control components, offering rapid response, high reliability, and effective maintenance of stable oil pressure. It reduces the risk of lubricating oil leakage and avoids interference from high-pressure oil on the contact force field of the brush filaments, ensuring stable signal transmission. 2. This invention divides the interior of the sealed cylinder into a large oil chamber and a small oil chamber using a partition. The large oil chamber is the main lubrication working area, while the small oil chamber serves as an overflow collection and buffer chamber. When the oil pressure in the large oil chamber is too high, the excess lubricating oil is temporarily stored in the small oil chamber through the oil pressure regulating mechanism, preventing the lubricating oil from directly leaking out and contaminating the equipment or causing oil loss. At the same time, a pressure relief valve is installed on the cover plate to prevent the pressure in the small oil chamber from becoming abnormally high, forming a double safety protection and ensuring the long-term stable operation of the entire lubricating oil circulation system. This effectively solves the vicious cycle problem of reduced oil volume and increased frictional heat load caused by leakage in traditional solutions. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the high-speed self-lubricating heat-dissipating conductive slip ring provided by the present invention; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 1 A schematic diagram of the exploded structure; Figure 4 This is a schematic diagram of the structure of the through-hole groove and the rib groove; Figure 5 This is a schematic diagram of the brush filament conductive mechanism; Figure 6 This is an exploded structural diagram of the hydraulic pressure regulating mechanism; Figure 7 This is a cross-sectional view of the hydraulic pressure regulating mechanism; Figure 8 for Figure 2 An enlarged structural diagram of point A in the middle.

[0018] Explanation of key symbols: 1. Brush ring mechanism; 101. Rotor; 102. No. 1 sealed bearing; 103. Brush mounting plate; 104. Conductive ring; 105. No. 2 sealed bearing; 106. Limiting support; 107. Brush filament; 2. Stator; 3. Sealed cylinder; 301. Small oil cavity; 302. Large oil cavity.

[0019] 4. No. 1 filling pipe; 5. No. 2 filling pipe; 6. Pressure relief valve; 7. Heat dissipation fins; 8. Sealing tube; 801. Plug; 9. Hydraulic pressure regulating mechanism; 901. Cylindrical rod; 902. Culvert groove; 903. Limiting cover plate; 904. Gear; 905. Rack rod; 906. Limiting block; 907. Connecting rod; 908. Piston; 909. Spring; 910. Sealing ring; 911. Gear plate; 912. Groove; 913. Limiting sleeve; 914. Through hole groove; 915. Rack groove; 10. Cover plate; 11. Cable tray No. 1; 12. Partition plate; 13. Cable tray No. 2. Detailed Implementation

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0021] Please combine Figures 1 to 3The high-speed self-lubricating heat dissipation conductive slip ring of this embodiment includes a sealing cylinder 3, a stator 2, a rotor 101, a partition 12, a brush ring mechanism 1, an oil pressure regulating mechanism 9, and a lubricating oil overflow collection mechanism.

[0022] The sealing cylinder 3 is a hollow cylindrical structure, with an annular partition 12 fixedly connected to the middle of its inner wall. The partition 12 divides the interior of the sealing cylinder 3 into two independent chambers along the axial direction. A stator 2 is fixedly connected to the outer side of the opening end of the sealing cylinder 3 via a flange or threads. The stator 2 is an annular component, and one end of a conductive ring 104 is rotatably supported on its inner side via a first sealing bearing 102. A limiting support 106 is fixedly connected to the side of the partition 12 near the stator 2. The limiting support 106 has an annular support structure, and a second sealing bearing 105 is provided on its inner side. The other end of the conductive ring 104 is rotatably supported within the second sealing bearing 105. The partition 12 and the stator 2 enclose a large oil cavity 302, which is a sealed cavity filled with lubricating oil. The conductive ring 104 and the brush filaments 107 are both immersed in the lubricating oil.

[0023] Combination Figure 2 , Figure 4 as well as Figure 7 As shown, the partition plate 12 is equipped with an oil pressure regulating mechanism 9 for regulating the oil pressure of the lubricating fluid in the large oil chamber 302.

[0024] Combination Figure 4The hydraulic pressure regulating mechanism 9 includes a limiting sleeve 913 fixedly connected to the side of the partition 12 near the small oil cavity. The limiting sleeve 913 is cylindrical, and its axis is parallel to the axis of the sealing cylinder 3. A cylinder 901 is rotatably connected to the inner side of the limiting sleeve 913. The cylinder 901 and the limiting sleeve 913 are in a precision clearance fit and can rotate relative to each other. In this embodiment, one end of the cylinder 901 is a standard cylindrical structure and the other end is a conical structure. Multiple through-hole grooves 914 are arranged in a circular array on the side wall of the limiting sleeve 913. The through-hole grooves 914 are elongated through-holes extending along the axial direction. The cylinder 901 has multiple circumferentially arrayed culvert grooves 902 inside. Each culvert groove 902 extends axially inward from the end face of the cylinder 901 near the large oil chamber. Each culvert groove 902 near the limiting sleeve 913 has a radially opened side hole corresponding to an outer through-hole groove 914. Initially, when the oil pressure in the large oil chamber 302 is within a preset normal range, each culvert groove 902 on the cylinder 901 and its corresponding through-hole groove 914 on the limiting sleeve 913 are misaligned and closed in the circumferential direction, and are not connected. As the oil pressure increases, the piston 908 is pushed and compresses the spring 909, which drives the cylinder 901 to rotate via a transmission mechanism. When the oil pressure reaches a first preset threshold, the spring 909 is compressed to its limit position. At this point, the ends of the culvert grooves 902 and the through-hole grooves 914 begin to partially overlap, forming a throttling channel and achieving initial pressure relief. When the oil pressure continues to rise to the second preset threshold, the two completely overlap, the pressure relief channel is fully open, and rapid pressure relief is achieved. The end of the cylinder 901 away from the limiting sleeve 913 extends outward along the central axis of the cylinder 901 through the partition 12 and into the large oil chamber 302. A limiting cover plate 903 is provided between the outer side of this end of the cylinder 901 and the partition 12. The limiting cover plate 903 is fixed to the partition 12 by screws to axially limit and seal the cylinder 901, preventing it from moving. A gear 904 is fixedly connected to the end of the cylinder 901 extending out of the partition 12.

[0025] It should be noted that the limiting cover 903 is fixedly installed on the partition 12, and its central hole is fitted onto the outside of the cylinder 901. A dynamic sealing assembly is provided between the limiting cover 903 and the cylinder 901. The dynamic sealing assembly is preferably a rotating Glyd ring or a lip seal, which is used to prevent the lubricating oil in the large oil cavity 302 from leaking along the cylinder 901 to the small oil cavity 301 while allowing the cylinder 901 to rotate.

[0026] Combination Figure 2 A sealing tube 8 is fixedly connected to the outer wall of the sealing cylinder 3, and a piston mechanism is provided on the inner side of the sealing tube 8. Specifically, a sealing tube 8 is fixedly connected to the outer wall of the sealing cylinder 3. The sealing tube 8 is a circular tube with one open end and one closed end. Its open end is fixedly connected to the outer wall of the sealing cylinder 3, and the axis of the sealing tube 8 is perpendicular to the axis of the sealing cylinder 3. A piston 908 is slidably sealed to the inner cavity of the sealing tube 8. Multiple sealing rings 910 are provided between the outer wall of the piston 908 and the inner wall of the sealing tube 8 to ensure a sealed fit between the piston 908 and the sealing tube 8. A spring 909 is fixedly connected to the side of the piston 908 away from the sealing cylinder 3. The spring 909 is a compression spring, and a plug 801 is fixedly connected to the end of the spring away from the piston 908. The plug 801 is fixedly connected to the open end of the sealing tube 8 by threads. Multiple vent holes are opened through the plug 801 to discharge air from the lower cavity of the piston 908 and avoid air resistance. The internal space of the sealing tube 8 is connected to the large oil chamber 302 through its open end. When the oil pressure in the large oil chamber 302 rises, the pressurized oil enters the sealing tube 8 and pushes the piston 908 to compress the spring 909 downward. This can buffer the space caused by the expansion of high temperature oil pressure when the oil temperature and oil pressure are still in the initial stage of heating up. Combination Figure 6 and Figure 7 As shown, a connecting rod 907 is fixedly connected to the upper side of the piston 908. The connecting rod 907 extends along the axial direction of the sealing tube 8, with one end penetrating the tube wall of the sealing tube 8. It is connected to a limiting block 906 through a sealing sliding fit. The limiting block 906 is a long strip-shaped block structure with a through groove 912. The through groove 912 is a rectangular through groove extending along the length of the limiting block 906. A toothed plate 911 is fixedly connected to one side of the groove 912. The toothed plate 911 meshes with the gear 904. It should be noted that the toothed plate 911 is fixedly connected to one side wall inside the groove 912, and the teeth on the toothed plate 911 mesh with the teeth on the end face of the gear 904. When the limiting block 906 is driven by the connecting rod 907 to slide linearly, the toothed plate 911 drives the gear 904 to rotate, thereby driving the cylinder 901 to rotate within the limiting sleeve 913.

[0027] Combination Figure 4 As shown, a limit guide mechanism is provided on the upper side of the limit block 906: Specifically, a groove 915 is provided on the lower side of the limiting support 106. The groove 915 is a quadrangular or triangular groove extending axially along the sealing pipe 8. A slidable rod 905 is connected to the inner side of the groove 915, and one end of the slid rod 905 is fixedly connected to one side of the limiting block 906. When the piston 908 moves up and down due to changes in oil pressure, the connecting rod 907 drives the limiting block 906 to slide back and forth along the direction defined by the groove 915. This, in turn, drives the gear 904 to rotate through the toothed plate 911. The gear 904 then drives the cylinder 901 to rotate relative to the limiting sleeve 913, thereby changing the overlap relationship between the side hole of the culvert groove 902 and the through hole groove 914.

[0028] Combination Figure 3 As shown, a brush ring mechanism 1 is provided between the limiting support 106 and the stator 2: Specifically, two brush mounting plates 103 are fixedly connected between the limiting support 106 and the inner sidewalls of the stator 2. The two brush mounting plates 103 are symmetrically arranged radially along the conductive ring 104. Each brush mounting plate 103 has multiple linearly arrayed brush filaments 107 fixedly connected to its two sides near the conductive ring 104. The brush filaments 107 are made of precious metal alloy wire, with one end fixed to the brush mounting plate 103 and the other end cantilevered and elastically abutting against the outer circumferential surface of the conductive ring 104. The brush filaments 107 on the two brush mounting plates 103 are arranged alternately on the outer side of the conductive ring 104, meaning the brush filaments on one side of the brush mounting plate correspond to the gap positions between adjacent brush filaments on the other side, thereby achieving multi-point, multi-line contact, increasing the effective contact area, and dispersing the current density. A rotor 101 is fixedly connected to one end of the conductive ring 104 away from the limiting support 106. The rotor 101 is a bushing-shaped structure, and its outer side is rotatably connected to the stator 2 through a bearing. The rotor 101 extends out of the stator 2 and is used to connect to external rotating equipment.

[0029] It should be noted that the circuit connection relationship of the brush filament 107, conductive ring 104 and brush mounting plate 103 involved in this embodiment is a mature existing technology and is well known to those skilled in the art. This application does not involve any improvement in this regard. Combination Figure 2 As shown, a lubricating oil overflow collection mechanism is provided on the side of the partition 12 away from the limiting support 106, that is, on the side of the small oil cavity: The lubricating oil overflow collection mechanism includes a cover plate 10 fixedly connected to the side of the sealing cylinder 3 away from the stator 2. The cover plate 10 and the partition plate 12 enclose a small oil chamber 301. A pressure relief valve 6 is installed on the outside of the cover plate 10, which is used to automatically open and relieve pressure when the pressure in the small oil chamber 301 exceeds a set threshold. The end of each culvert groove 902 away from the small oil chamber 301 is connected to the large oil chamber 302 through a through hole groove 914, thereby forming a controllable fluid flow channel between the large oil chamber 302 and the small oil chamber 301.

[0030] Combination Figure 2As shown, a first wire passage groove 11 is provided on the partition 12 for passing the signal lead of the brush filament 107; a second wire passage groove 13 is provided on the rotor 101 for passing the lead of the conductive ring 104. After the wires are passed through, both the first wire passage groove 11 on the partition 12 and the second wire passage groove 13 on the rotor 101 are filled and sealed with oil-resistant epoxy resin potting compound to ensure that the lubricating oil inside the corresponding cavity or rotor does not leak along the gap between the wires. Multiple heat dissipation fins 7 are provided on the outside of the sealing cylinder 3, and the multiple heat dissipation fins 7 are arranged in a circumferential array. The heat generated by the high-speed friction between the brush bristles 107 and the conductive ring 104 is first absorbed by the lubricating oil in the large oil cavity 302. Then, the heat is conducted through the metal wall of the sealing cylinder 3 to the multiple heat dissipation fins 7 on its outer side, and finally dissipated to the surrounding environment through natural convection or forced air cooling, forming a complete heat conduction-dissipation path. The outer side of the small oil cavity 301 is connected to the No. 2 filling pipe 5, and the outer side of the large oil cavity 302 is connected to the No. 1 filling pipe 4, which are used to add or discharge lubricating oil to the two oil cavities respectively.

[0031] The oil pressure regulating mechanism 9 of this invention achieves two-stage pressure management: volume buffering and channel pressure relief. In the initial stage of oil temperature rise, the piston 908 compresses the spring 909 to expand the effective volume of the sealing tube 8, absorbing the volume expansion of the oil; this is the first stage of buffering. When the oil pressure exceeds the limit adjustment capacity of the spring 909, the stroke of the piston 908 is converted into the rotation angle of the cylinder 901 through a gear and rack mechanism, thereby precisely opening the oil drain channel and discharging excess oil into the small oil chamber 301; this is the second stage of active pressure relief.

[0032] The implementation principle of the high-speed self-lubricating heat-dissipating conductive slip ring in this application embodiment is as follows: In the initial state, the large oil cavity 302 is filled with lubricating oil, and the side hole of the culvert groove 902 on the cylinder 901 and the through hole groove 914 on the limiting sleeve 913 are misaligned, that is, the two are not connected, and the fluid flow channel between the large oil cavity 302 and the small oil cavity 301 is basically closed.

[0033] When the conductive slip ring is working, the rotor 101 drives the conductive ring 104 to rotate at high speed relative to the stator 2 and the brush filaments 107, for example, at a speed of 5000-15000 rpm. High-speed sliding friction is generated between the brush filaments 107 and the outer wall of the conductive ring 104, and the frictional heat causes the temperature of the lubricating oil in the large oil cavity 302 to rise rapidly. The lubricating oil expands in volume after being heated, and the oil pressure in the large oil cavity 302 rises.

[0034] When the oil pressure rises and is in the initial low-pressure stage: Lubricating oil enters the inner cavity of the sealing pipe 8 through the open end of the sealing pipe 8, acting on the end face of the piston 908, pushing the piston 908 to compress the spring 909 and move it towards the plug 801. The piston 908 drives the limiting block 906 to slide along the groove 915 via the connecting rod 907. The toothed plate 911 on the limiting block 906 drives the gear 904 to rotate, and the gear 904 drives the cylinder 901 to rotate a small angle relative to the limiting sleeve 913. At this time, the side hole of the culvert groove 902 and the through hole groove 914 are still misaligned. The excess oil volume in the large oil chamber 302 is accommodated in the sealing pipe 8 through the displacement of the piston 908, which is equivalent to providing a buffer space for the expanding oil, thereby achieving dynamic balance of oil pressure in the low-pressure range and avoiding a sharp rise in oil pressure. When the oil temperature rises further and the oil pressure continues to increase beyond the buffering capacity provided by the piston 908 and spring 909 at their maximum deformation positions, the piston 908 continues to move downward to its limit position. The limiting block 906 drives the toothed plate 911 to rotate the gear 904 to a larger angle, so that the side hole of the culvert groove 902 on the cylinder 901 gradually aligns and connects with the through hole groove 914 on the limiting sleeve 913. At this time, the high-pressure lubricating oil in the large oil chamber 302 enters the culvert groove 902 through the through hole groove 914, and then flows into the small oil chamber 301 along the culvert groove 902, releasing excess oil into the small oil chamber 301 for temporary storage, achieving active pressure relief and effectively preventing leakage at weak sealing points caused by excessive oil pressure in the large oil chamber 302.

[0035] Throughout the process, the limiting cover plate 903 limits the axial position of the cylinder 901, ensuring smooth rotation of the cylinder 901; the sliding fit between the groove 915 and the rod 905 provides precise linear guidance for the limiting block 906, ensuring the meshing accuracy of the toothed plate 911 and the gear 904; the sealing ring 910 ensures the sealing between the piston 908 and the sealing tube 8, preventing lubricating oil leakage; the vent hole on the plug 801 keeps the lower chamber of the piston 908 connected to the atmosphere, avoiding the air compression resistance affecting the sensitive response of the piston 908; the pressure relief valve 6 opens to relieve pressure when the pressure in the small oil chamber 301 rises abnormally, preventing damage to the small oil chamber 301 due to overpressure; the heat dissipation fins 7 conduct heat from the inside of the sealing cylinder 3 to the outside air, assisting in cooling; the first filling pipe 4 and the second filling pipe 5 are used to periodically replenish or replace the lubricating oil, ensuring sufficient oil quantity and clean oil quality during long-term operation.

[0036] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A high-speed self-lubricating and heat-dissipating conductive slip ring, comprising a sealing cylinder (3), characterized in that, A partition plate (12) is fixedly connected to the inner side of the sealing cylinder (3), and a stator (2) is fixedly connected to the outer side of one end of the sealing cylinder (3). A limit support (106) is fixedly connected to the side of the partition plate (12) close to the stator (2). A large oil cavity (302) is formed between the partition plate (12) and the stator (2). A brush ring mechanism (1) is provided between the limit support (106) and the stator (2). An oil pressure regulating mechanism (9) for regulating the oil pressure of the lubricating fluid in the large oil cavity (302) is provided on the partition plate (12). A lubricating oil overflow collection mechanism is provided on the side of the partition plate (12) away from the limit support (106). The hydraulic pressure regulating mechanism (9) includes a limiting sleeve (913) fixedly connected to one side of the partition (12). A cylinder (901) is rotatably connected to the inner side of the limiting sleeve (913). Multiple through-hole grooves (914) arranged in a circular array are opened on the outer side of the limiting sleeve (913). Multiple culvert grooves (902) arranged in a circular array are opened inside the cylinder (901). The end of each culvert groove (902) near the limiting sleeve (913) corresponds one-to-one with the through-hole groove (914) on the outer side. The end of the cylinder (901) away from the limiting sleeve (913) passes outward along the central axis of the cylinder (901) through the partition (12). The end of the cylinder (901) away from the limiting sleeve (913) passes outward along the central axis of the cylinder (901) through the partition (12). A limiting cover plate (903) is provided between the outer side of the end and the partition plate (12). A gear (904) is fixedly connected to the side of the cylinder (901) away from the limiting sleeve (913). A sealing tube (8) is fixedly connected to the outer side of the sealing cylinder (3). A piston mechanism is provided on the inner side of the sealing tube (8). A connecting rod (907) is fixedly connected to the upper side of the piston mechanism. A limiting block (906) is fixedly connected to one end of the connecting rod (907). A slot (912) is opened through the limiting block (906). A toothed plate (911) is fixedly connected to one side of the inner side of the slot (912). The toothed plate (911) meshes with the gear (904). A limiting guide mechanism is provided on the upper side of the limiting block (906).

2. The high-speed self-lubricating heat-dissipating conductive slip ring as described in claim 1, characterized in that, The brush ring mechanism (1) includes a second sealed bearing (105) disposed inside the limiting support (106), a first sealed bearing (102) disposed inside the stator (2), a conductive ring (104) rotatably connected between the second sealed bearing (105) and the first sealed bearing (102), and a brush filament conductive mechanism disposed outside the conductive ring (104).

3. The high-speed self-lubricating heat-dissipating conductive slip ring as described in claim 2, characterized in that, The brush wire conductive mechanism includes two brush mounting plates (103) fixedly connected between the limiting support (106) and the stator (2). The two brush mounting plates (103) are symmetrically arranged, and each brush mounting plate (103) has multiple linearly arrayed brush wires (107) fixedly connected on both sides of the side closest to the conductive ring (104). The brush wires (107) on the two brush mounting plates (103) are arranged alternately on the outside of the conductive ring (104).

4. The high-speed self-lubricating heat-dissipating conductive slip ring as described in claim 2, characterized in that, The conductive ring (104) is fixedly connected to a rotor (101) at one end away from the limiting support (106), and the outer side of the rotor (101) is rotatably connected to the stator (2).

5. The high-speed self-lubricating heat-dissipating conductive slip ring as described in claim 1, characterized in that, The lubricating oil overflow collection mechanism includes a cover plate (10) fixedly connected to the side of the sealing cylinder (3) away from the stator (2). A pressure relief valve (6) is installed on the outside of the cover plate (10). A small oil cavity (301) is formed between the cover plate (10) and the partition plate (12). One end of each culvert groove (902) away from the small oil cavity (301) is connected to the large oil cavity (302) through a through hole groove (914).

6. The high-speed self-lubricating and heat-dissipating conductive slip ring as described in claim 1, characterized in that, The piston mechanism includes a piston (908) disposed inside the sealing tube (8). Multiple sealing rings (910) are disposed between the outer side of the piston (908) and the inner side of the sealing tube (8). A spring (909) is fixedly connected to the side of the piston (908) away from the connecting rod (907). A plug (801) is fixedly connected to one end of the spring (909) away from the piston (908) and fixedly connected to one end of the sealing tube (8). Multiple vent holes are provided through the plug (801).

7. The high-speed self-lubricating and heat-dissipating conductive slip ring as described in claim 1, characterized in that, The limiting guide mechanism includes a groove (915) opened on the lower side of the limiting support (106), and a rod (905) is slidably connected to the inner side of the groove (915). One end of the rod (905) is fixedly connected to one side of the limiting block (906).

8. The high-speed self-lubricating heat-dissipating conductive slip ring as described in claim 4, characterized in that, The partition (12) has a first wire passage groove (11), and the rotor (101) has a second wire passage groove (13).

9. The high-speed self-lubricating heat-dissipating conductive slip ring as described in claim 1, characterized in that, The outer side of the sealing cylinder (3) is provided with multiple heat dissipation fins (7), which are arranged in a circumferential array.

10. The high-speed self-lubricating and heat-dissipating conductive slip ring as described in claim 1, characterized in that, The outer side of the small oil cavity (301) is connected to the No. 2 filling pipe (5), and the outer side of the large oil cavity (302) is connected to the No. 1 filling pipe (4).

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