Conductive slip ring with novel grounding mode
By designing a boss and groove structure in the conductive slip ring, combined with insulating washers and anti-separation components, the problem of increased grounding resistance of the conductive slip ring in a high-speed rotating environment is solved, and the plating quality and equipment reliability are improved.
Patent Information
- Application Number
- CN202411380274.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-01-17
AI Technical Summary
In a high-speed rotation environment, the contact pressure between the ground ring plate and the bearing seat is difficult to maintain stable, resulting in an increase in the ground resistance, affecting the safe operation of the equipment. In addition, during the electroplating process, the coating is easy to adhere to the bearing seat. Affects the plating quality.
A new type of grounding conductive slip ring is designed, which adopts a boss and groove structure, combined with an insulating washer and an anti-separation component, to ensure stable contact pressure between the grounding ring piece and the bearing seat, and through the L-shaped step of the insulating washer Designed to isolate the grounding ring from the plating process of the bearing seat.
It effectively reduces the grounding resistance, improves the reliability and safety of the equipment, ensures the quality and conductive performance of the grounding ring plate coating, and is suitable for use in high-speed rotation and complex environments.
Smart Images
Figure CN119324352A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of conductive slip rings, in particular to a conductive slip ring with a novel grounding method. Background Art
[0002] Conductive slip ring is a kind of rotating power transmission connector. It is a power transmission device that realizes the transmission of electrical signals and electric power between two relatively rotating structures. It realizes sliding power transmission in the rotating state through sliding electric friction contact between the brush wire of the stator part of the slip ring and the ring piece of the rotor part of the slip ring.
[0003] In actual use of the conductive slip ring, the last ring usually needs to be connected to the shaft and grounded. When the flat ring is in direct contact with the bearing seat, the surface of the ring is electroplated. Since the surface of the grounding ring, the bearing seat, and the plating liquid are all connected at the same time, the plating layer is easy to adhere to the bearing seat, and the plating layer on the edge of the ring is flanging and peeling. This seriously affects the quality of electroplating and conductive properties, and has become a technical problem. Secondly, in a high-speed rotation environment, the contact pressure between the grounding ring and the bearing seat is difficult to maintain stable, and poor contact is prone to occur, which increases the grounding resistance and affects the safe operation of the equipment. Summary of the invention
[0004] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a conductive slip ring with a new grounding method, a grounding ring, an insulating gasket and a bearing seat, wherein a boss is arranged between the inner ring and the outer ring of the end face of the grounding ring (the width of the boss is less than one-third of the width of the entire grounding ring, the boss needs to be positioned with the groove, and the strength of the boss is ensured, the inner ring width of the grounding ring (the difference between the inner diameter of the boss and the inner diameter of the grounding ring) accounts for one-third to one-half of the width of the entire grounding ring, and the grounding of the inner ring of the grounding ring needs to have sufficient contact surface to ensure that the grounding ring and the bearing seat can effectively contact and conduct electricity), and the grounding ring is insulated between the part of the grounding ring located on the outer ring of the boss and the end face of the bearing seat. The grounding ring is isolated from the outer ring by the edge washer, and the grounding ring is located at the inner ring of the boss and contacts the end face of the bearing seat, so that the grounding ring is electrically conductive with the bearing seat, and a groove matching with the boss is provided on the bearing seat (the matching depth leaves a gap of 0.05-0.15mm); the insulating washer has an L-shaped step, and the step surface covers the edge of the outer surface of the bearing seat (the outer ring diameter of the insulating washer is 0.5-1mm larger than the outer ring diameter of the bearing seat, and the outer diameter of the grounding ring is 0.5-1.5mm lower than the outer diameter of the insulating washer); an anti-drop component can also be installed between the grounding ring and the bearing seat to ensure the contact pressure between the grounding ring and the contact surface of the bearing seat, thereby reducing the grounding resistance between the grounding ring and the bearing seat.
[0005] Preferably, the anti-slip assembly comprises a mounting sleeve that can be sleeved on the circumferential outer surface of the maximum diameter of the bearing seat, and one end of the mounting sleeve is fixed with a plurality of extrusion portions arranged in a circular equidistant array.
[0006] Preferably, the extrusion part includes an extrusion bracket fixed with the mounting sleeve, each extrusion bracket is slidably provided with a guide rod, wherein the extrusion bracket and the guide rod are arranged parallel to the axis of the bearing seat; an extrusion arm is movably connected to one end of the extrusion bracket away from the mounting sleeve, and a slide rail groove is provided on the extrusion arm.
[0007] Preferably, an extension arm is fixed to one end of the guide rod, and a sliding pin that slides with the slide rail groove is fixed to one end of the extension arm. The end of the extrusion arm away from the end connected to the extrusion bracket is movably connected to the first pull rod, and the extrusion bracket is also fixedly provided with a second pull rod bracket, and the second pull rod bracket is movably connected to the second pull rod, and the opposite ends of the second pull rod and the first pull rod are movably connected to the force-bearing seat.
[0008] Preferably, a bolt column is fixedly provided on the force bearing seat, a spline groove is arranged on the bolt column, a lead block is sleeved on the bolt column and slidably arranged with the bolt column through a spline, and the lead block is fixed on the force bearing seat through a nut cap that cooperates with the thread of the bolt column.
[0009] Preferably, two rollers are rotatably installed on the end of the extension arm away from the mounting sleeve, and the edge position of the grounding ring away from the bearing seat is in contact with an anti-slip ring. A right-angle groove is provided at the contact position between the anti-slip ring and the grounding ring to ensure that the anti-slip ring and the grounding ring are always coaxial.
[0010] Preferably, a limiting ring with a diameter larger than the outer diameter of the anti-slip ring is arranged on the circumferential surface of the anti-slip ring, the limiting ring is arranged between two rollers in all the extrusion parts, and the limiting ring is in rolling cooperation with all the rollers.
[0011] Preferably, a dust cover can be sleeved on the outer side of all the extrusion parts, one end of the dust cover is rotatably matched with the grounding ring sheet and the anti-slip ring, and the other end of the dust cover is fixed with a conical collar in a threaded manner.
[0012] Preferably, the anti-slip assembly also includes a limiting flange that contacts and cooperates with the chamfered portion of the bearing seat, the limiting flange and the bearing seat are coaxially positioned, the limiting flange and the mounting sleeve are fastened with screw threads, and a gap is provided at the connection position between the mounting sleeve and the limiting flange to provide a pulling force for the anti-slip ring to move in the direction of the limiting flange, wherein the conical ring is fastened with the screw threads.
[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention ensures the contact pressure between the grounding ring and the bearing seat by designing an anti-slip assembly. Under high-speed rotation, the anti-slip assembly can provide continuous pressure to ensure that the grounding ring is in close contact with the bearing seat. This design effectively reduces the grounding resistance, avoids electrical failures caused by poor contact, and improves the reliability and safety of equipment operation; (2) The insulating gasket of the present invention adopts an L-shaped step design, whose outer diameter is larger than the outer diameter of the bearing seat and covers the edge of the outer surface of the bearing seat. This structure completely isolates the outer ring of the grounding ring from the bearing seat. During the electroplating process, the electroplating liquid cannot directly contact the bearing seat, avoiding the phenomenon of the electroplating liquid adhering to the surface of the bearing seat. In this way, the quality of the grounding ring plating layer is ensured and its conductivity and corrosion resistance are improved; (3) The present invention is designed with a dust cover and a conical collar, which can effectively protect the anti-slip assembly and the grounding ring in a dusty environment. The dust cover rotates with the grounding ring and the anti-slip ring to prevent dust from entering the internal components and extend the service life of the equipment. This design makes the equipment suitable for various complex environments and enhances its practicality and reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a cross-sectional view of the bearing seat structure of the present invention.
[0015] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle.
[0016] Figure 3 It is a schematic diagram of the anti-ring-off structure of the present invention.
[0017] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point B in the middle.
[0018] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point C in the middle.
[0019] Figure 6 It is a schematic diagram of the structure of the limiting flange of the present invention.
[0020] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point D in the middle.
[0021] Figure 8 It is a schematic diagram of the structure of the dust cover of the present invention.
[0022] Fig. 9 It is a schematic diagram of the overall external structure of the present invention.
[0023] In the figure: 101-grounding ring; 102-insulating gasket; 103-bearing seat; 104-boss; 105-groove; 201-anti-slip ring; 202-limiting ring; 203-roller; 204-extension arm; 205-sliding pin; 206-slide rail groove; 207-extrusion bracket; 208-guide rod; 209-extrusion arm; 210-first pull rod; 211-second pull rod bracket; 212-second pull rod; 213-force seat; 214-bolt column; 215-nut cap; 216-lead block; 217-mounting sleeve; 218-limiting flange; 219-screw; 220-dust cover; 221-conical collar. DETAILED DESCRIPTION
[0024] The following is combined with Figure 1-Figure 9 , and further illustrate the technical solution of the present invention through specific implementation methods.
[0025] The present invention provides a conductive slip ring with a novel grounding method, comprising a grounding ring sheet 101, an insulating washer 102 and a bearing seat 103, wherein a boss 104 is arranged between the inner ring and the outer ring of the end face of the grounding ring sheet 101 (the width of the boss 104 is less than one third of the width of the entire grounding ring sheet 101, the boss 104 needs to be positioned with the groove 105, and the strength of the boss 104 is ensured, the inner ring width of the grounding ring sheet 101 (the difference between the inner diameter of the boss 104 and the inner diameter of the grounding ring sheet 101) accounts for one third to one half of the width of the entire grounding ring sheet 101, and the grounding of the inner ring of the grounding ring sheet 101 needs to have a sufficient contact surface to ensure that the grounding ring sheet 101 and the bearing seat 103 can effectively contact and conduct electricity), the part of the grounding ring sheet 101 located at the outer ring of the boss 104 is separated from the end face of the bearing seat 103 by the insulating washer 102, and the grounding The grounding ring 101 is located between the inner ring of the boss 104 and the end face of the bearing seat 103, so that the grounding ring 101 and the bearing seat 103 are electrically conductive, and a groove 105 is provided on the bearing seat 103 to match the boss 104 (the matching depth leaves a gap of 0.05-0.15mm); wherein the insulating gasket 102 has an L-shaped step, and the step surface covers the edge position of the outer surface of the bearing seat 103 (the outer ring diameter of the insulating gasket 102 is 0.5-1mm larger than the outer ring diameter of the bearing seat 103, and the outer diameter of the grounding ring 101 is 0.5-1.5mm lower than the outer diameter of the insulating gasket 102); an anti-slip component can also be installed between the grounding ring 101 and the bearing seat 103 to ensure the contact pressure between the contact surfaces of the grounding ring 101 and the bearing seat 103, and reduce the grounding resistance between the grounding ring 101 and the bearing seat 103. The anti-drop assembly includes a mounting sleeve 217 that can be sleeved on the circumferential outer surface of the maximum diameter of the bearing seat 103, and one end of the mounting sleeve 217 is fixed with a plurality of extrusion parts arranged in a circular equidistant array.
[0026] The extrusion part includes an extrusion bracket 207 fixed with the mounting sleeve 217, and each extrusion bracket 207 is slidably provided with a guide rod 208, wherein the extrusion bracket 207 and the guide rod 208 are arranged parallel to the axis of the bearing seat 103; an extrusion arm 209 is movably connected to one end of the extrusion bracket 207 away from the mounting sleeve 217, and a slide rail groove 206 is provided on the extrusion arm 209. An extension arm 204 is fixed to one end of the guide rod 208, and a sliding pin 205 slidably matched with the slide rail groove 206 is fixed to one end of the extension arm 204, and a first pull rod 210 is movably connected to one end of the extrusion arm 209 away from the extrusion bracket 207, and a second pull rod bracket 211 is also fixedly provided on the extrusion bracket 207, and a second pull rod 212 is movably connected to the second pull rod bracket 211, and the opposite ends of the second pull rod 212 and the first pull rod 210 are both movably connected to the force bearing seat 213. The force bearing seat 213 is fixedly provided with a bolt column 214, and a spline groove is provided on the bolt column 214. A lead block 216 is sleeved on the bolt column 214 and is slidably provided with the bolt column 214 through a spline. The lead block 216 is fixed to the force bearing seat 213 through a nut cap 215 threadedly matched with the bolt column 214. Two rollers 203 are rotatably mounted on the end of the extension arm 204 away from the mounting sleeve 217. The edge position of the side of the grounding ring sheet 101 away from the bearing seat 103 is contacted and matched with an anti-slip ring 201. The contact position of the anti-slip ring 201 and the grounding ring sheet 101 is provided with a right-angle groove to ensure that the anti-slip ring 201 and the grounding ring sheet 101 are always coaxial. A limiting ring 202 with a diameter larger than the outer diameter of the anti-slip ring 201 is provided on the circumferential surface of the anti-slip ring 201. The limiting ring 202 is arranged between the two rollers 203 in all the extrusion parts, and the limiting ring 202 is rollingly matched with all the rollers 203. The outer side of all the extrusion parts can also be sleeved with a dust cover 220, one end of the dust cover 220 is rotatably matched with the grounding ring 101 and the anti-slip ring 201, and the other end of the dust cover 220 is fixed with a conical collar 221 by threading. The anti-slip assembly also includes a limit flange 218 that contacts and cooperates with the chamfered part of the bearing seat 103, the limit flange 218 and the bearing seat 103 are coaxially positioned, the limit flange 218 and the mounting sleeve 217 are threadedly fastened by screws 219, and a gap is set at the connection position between the mounting sleeve 217 and the limit flange 218, which is used to provide a pulling force for the anti-slip ring 201 to move in the direction of the limit flange 218, wherein the conical collar 221 and the screw 219 are threadedly fastened.
[0027] The working principle of a new type of conductive slip ring with grounding method disclosed in the present invention is as follows: in the application scenario of high-speed rotation, the anti-slip component can be installed on the bearing seat 103 (installation can be selected according to needs, such as installing it when reducing the grounding resistance, and not installing it when efficient transmission is required), ensuring the contact between the grounding ring piece 101 and the bearing seat 103, and ensuring that the grounding resistance between the grounding ring piece 101 and the bearing seat 103 is the lowest.
[0028] During operation, the grounding ring 101 and the bearing seat 103 rotate (slide) relative to each other, and the high-speed rotation of the bearing seat 103 drives the installation sleeve 217 to rotate (sticky silicone is applied between the installation sleeve 217 and the bearing seat 103 to increase the friction between the two and reduce the looseness). The rotation of the installation sleeve 217 drives all the extrusion parts, and the lead block 216 in the extrusion part will rotate along with it. The rotation of the lead block 216 will move outward under the action of centrifugal force, thereby driving the force seat 213 to move synchronously. The force seat 213 pulls the first pull rod 210 and the second pull rod 212 to swing. Since the second pull rod 212 is movably connected to the second pull rod bracket 211 in a fixed state, the first pull rod 210 will pull the extrusion part. The pressing arm 209 swings, and at this time, the slide rail groove 206 pushes the extension arm 204 through the sliding pin 205, and the roller 203 on the extension arm 204 drives the anti-drop ring 201 to move toward the grounding ring 101 through the limit ring 202 (movement trend). In this process, the sliding pin 205 and the slide rail groove 206 can slide relative to each other (the sliding pin 205 is set in the slide rail groove 206 at one end close to the extrusion bracket 207, and its purpose is to extend the length of the force arm between the sliding pin 205 and the first pull rod 210, reduce the pulling force of the first pull rod 210 on the extrusion arm 209, and increase the contact pressure between the grounding ring 101 and the bearing seat 103), and the guide rod 208 and the extrusion bracket 207 can slide relative to each other. Therefore, when the bearing seat 103 rotates at a high speed, the contact pressure between the grounding ring 101 and the bearing seat 103 can be effectively guaranteed. When used in a dusty environment, the dust cover 220 and the conical ring 221 can be installed. Specifically, the conical ring 221 is first fixed with the screw 219 (when the limiting flange 218 and the mounting sleeve 217 are connected, the conical ring 221 is also connected together by the screw 219), and then the dust cover 220 is inserted into the screw 219 along the axial direction, and the dust cover 220 is rotated. At this time, the dust cover 220 and the conical ring 221 are fastened together, and the anti-drop assembly, the grounding ring 101, the insulating gasket 102 and the bearing seat 103 are buckled together.
[0029] The diameter of the grounding ring 101 is smaller than the diameter of the insulating gasket 102, and the outer diameter of the insulating gasket 102 is larger than the outer diameter of the bearing seat 103. The insulating gasket 102 has an L-shaped step, and the step surface covers the edge of the outer surface of the bearing seat 103, so that the outer ring of the grounding ring 101 is completely isolated from the bearing seat 103, and the plating liquid is not directly connected to the bearing seat 103 during electroplating (the insulating gasket 102 blocks the edge of the bearing seat 103 to prevent the plating liquid from contacting the bearing seat 103), thereby avoiding the influence of the plating liquid adhering to the surface of the bearing seat 103, ensuring the quality of the plating layer of the grounding ring 101, and solving the problem that the grounding ring 101 is in direct contact with the bearing seat 103, the plating liquid is easily attached to the bearing seat 103 during metal plating, and the grounding ring 101 has a poor electroplating effect.
Claims
1. A new type of grounding conductive slip ring, characterized by: A grounding ring (101), an insulating washer (102) and a bearing seat (103), wherein a boss (104) is provided between the inner ring and the outer ring of the end face of the grounding ring (101), the portion of the grounding ring (101) located on the outer ring of the boss (104) and the end face of the bearing seat (103) are separated by the insulating washer (102), the portion of the grounding ring (101) located on the inner ring of the boss (104) and the end face of the bearing seat (103) are in contact with each other, so that the grounding ring (101) and the bearing seat (103) are electrically conductive, and a groove (105) matching the boss (104) is provided on the bearing seat (103); wherein the insulating washer (102) has an L-shaped step, and the step surface covers the edge position of the outer surface of the bearing seat (103); An anti-drop component can also be installed between the grounding ring (101) and the bearing seat (103) to ensure the contact pressure between the contact surfaces of the grounding ring (101) and the bearing seat (103) and to reduce the grounding resistance between the grounding ring (101) and the bearing seat (103).
2. According to the conductive slip ring of a new grounding method as claimed in claim 1, it is characterized by: The anti-drop assembly comprises a mounting sleeve (217) that can be sleeved on the circumferential outer surface of the maximum diameter of the bearing seat (103), and a plurality of extrusion portions arranged in a circular equidistant array are fixed to one end of the mounting sleeve (217).
3. The conductive slip ring of the novel grounding method according to claim 2 is characterized in that: The extrusion portion comprises an extrusion bracket (207) fixedly coupled to the mounting sleeve (217), each extrusion bracket (207) being slidably provided with a guide rod (208), wherein the extrusion bracket (207) and the guide rod (208) are arranged parallel to the axis of the bearing seat (103); an extrusion arm (209) is movably connected to one end of the extrusion bracket (207) away from the mounting sleeve (217), and a slide rail groove (206) is provided on the extrusion arm (209).
4. The conductive slip ring of the novel grounding method according to claim 3 is characterized in that: An extension arm (204) is fixed to one end of the guide rod (208), a sliding pin (205) that slidably cooperates with the slide rail groove (206) is fixed to one end of the extension arm (204), an end of the extrusion arm (209) away from the end connected to the extrusion bracket (207) is movably connected to a first pull rod (210), a second pull rod bracket (211) is also fixedly provided on the extrusion bracket (207), a second pull rod (212) is movably connected to the second pull rod bracket (211), and the opposite ends of the second pull rod (212) and the first pull rod (210) are both movably connected to a force bearing seat (213).
5. The conductive slip ring with a new grounding method according to claim 4 is characterized in that: A bolt column (214) is fixedly arranged on the force bearing seat (213), a spline groove is arranged on the bolt column (214), a lead block (216) is sleeved on the bolt column (214) and is slidably arranged with the bolt column (214) via a spline, and the lead block (216) is fixed to the force bearing seat (213) via a nut cap (215) threadably matched with the bolt column (214).
6. The conductive slip ring of the novel grounding method according to claim 5 is characterized in that: Two rollers (203) are rotatably mounted on one end of the extension arm (204) away from the mounting sleeve (217); an edge of a side of the grounding ring (101) away from the bearing seat (103) is in contact with an anti-slip ring (201); a right-angle groove is provided at a contact position between the anti-slip ring (201) and the grounding ring (101) to ensure that the anti-slip ring (201) and the grounding ring (101) are always coaxial.
7. The conductive slip ring with a new grounding method according to claim 6 is characterized in that: A limiting ring (202) having a diameter greater than the outer diameter of the anti-slip ring (201) is arranged on the circumferential surface of the anti-slip ring (201); the limiting ring (202) is arranged between two rollers (203) in all the extrusion parts, and the limiting ring (202) and all the rollers (203) are in rolling cooperation.
8. The conductive slip ring with a new grounding method according to claim 7 is characterized in that: A dust cover (220) can also be sleeved on the outer sides of all the extrusion parts. One end of the dust cover (220) is rotatably matched with the grounding ring (101) and the anti-slip ring (201), and the other end of the dust cover (220) is fixed with a conical collar (221) in a threaded manner.
9. The conductive slip ring with a new grounding method according to claim 8 is characterized in that: The anti-slip assembly also includes a limiting flange (218) that contacts and cooperates with the chamfered portion of the bearing seat (103); the limiting flange (218) and the bearing seat (103) are coaxially positioned; the limiting flange (218) and the mounting sleeve (217) are threadedly fastened with screws (219); and a gap is provided at the connection position between the mounting sleeve (217) and the limiting flange (218) to provide a pulling force for the anti-slip ring (201) to move in the direction of the limiting flange (218), wherein the conical collar (221) is threadedly fastened with the screws (219).