Conductive ring centering device

Abstract

The application discloses a kind of electrically conductive ring center correction devices, including base, ring rail, guide column, bearing table, limit clamp seat, adjusting mechanism and protractor table etc..Base is equipped with ring rail, guide column connects bearing table, and bearing table is circumferentially equipped with avoiding groove and limit rail, and limit clamp seat is slid along rail and is connected with adjusting mechanism;Adjusting mechanism contains worm gear, bevel gear and screw rod, through detachable handle driving worm, through worm gear, bevel gear linkage screw rod, realize limit clamp seat synchronous clamping;Worm gear self-locking ensures stability, and protractor table detects concentricity;Base support leg can adjust height.The device can improve the correction accuracy, simplify the operation process, shorten the equipment downtime cycle, reduce maintenance cost, and is suitable for the scene of power station unit etc. On-site electrically conductive ring center correction.

Description

Technical Field

[0001] This application belongs to the field of slip ring correction measurement, and specifically relates to a conductive ring center correction device. Background Technology

[0002] Slip rings (also known as conductive rings) are core components for transmitting electricity and signals between rotating machinery and stationary parts, and are widely used in power plant generator sets, wind turbines, and other fields. Especially in large power plant units, the surface smoothness and concentricity of the slip ring directly determine the contact stability of the carbon brushes: if the concentricity deviation exceeds the allowable range, it will lead to accelerated carbon brush wear, excessive heat generation, requiring periodic shutdowns to replace the carbon brushes, and may even cause unplanned shutdowns of the unit, seriously affecting the reliability of power supply. Currently, the centering and repair of slip rings mainly rely on the following methods, but these have significant drawbacks:

[0003] 1. Sending to a professional manufacturer for repair: This requires disassembling the conductive ring and transporting it over long distances, which is not only time-consuming (usually several days to several weeks) and costly, but also carries the risk of secondary damage to the conductive ring due to bumpy roads, significantly extending the equipment downtime.

[0004] 2. On-site manual correction: The conductive ring is held in a general-purpose clamp and adjusted by manual measurement (such as a dial indicator). However, the lack of a dedicated synchronous adjustment mechanism can easily lead to uneven force on the conductive ring and large center positioning deviation (the accuracy is usually only 0.1mm).

[0005] 3. Defects of traditional correction devices: Some existing devices have cumbersome adjustment procedures (requiring multiple manual adjustments of the clamp position) and lack a self-locking function—they are prone to loosening due to vibration or external force after clamping, leading to unreliable measurement results. In addition, the adjustment mechanism lacks transmission control, making it difficult to achieve uniform clamping and rapid center alignment of the conductive ring. Utility Model Content

[0006] This application provides a conductive ring center alignment device, which achieves rapid and accurate center alignment and stable clamping of the conductive ring by setting an adjustment mechanism, thereby solving the problem that the center alignment of the conductive ring in the prior art relies on manual labor and is labor-intensive.

[0007] To achieve the above objectives, this application provides a conductive ring center correction device, including a base, a ring rail fixedly mounted on the base, a guide post rotatably mounted inside the ring rail, a support platform fixedly mounted at the end of the guide post away from the base, a plurality of clearance grooves evenly arranged around the circumference of the support platform, limit rails provided on both sides of the clearance grooves, limit clamps slidably mounted on the limit rails, the limit clamps being connected to an adjustment mechanism, the adjustment mechanism being located on the side of the support platform near the base, and two support columns fixedly mounted on the base, each support column being equipped with an indexing gauge.

[0008] In one embodiment, the adjusting mechanism includes a first bevel gear rotatably mounted on the support platform via a bearing and a lead screw rotatably mounted on the support platform via a second shaft seat. A second bevel gear is fixedly mounted at one end of the lead screw near the first bevel gear, and the second bevel gear meshes with the first bevel gear.

[0009] One end of the lead screw is threadedly connected to a connecting seat, and the connecting seat is connected to the limiting clamp.

[0010] In one embodiment, a worm gear is coaxially fixedly mounted on the first bevel gear, and a worm is meshed with the worm gear. The worm is rotatably mounted on the support platform via a first bearing.

[0011] In one embodiment, a throttle is inserted into one end of the worm gear near the support column.

[0012] In one embodiment, a limiting boss is provided on the worm gear, and a limiting groove is provided in the throttle corresponding to the limiting boss. When docking, the limiting boss is slidably disposed in the limiting groove.

[0013] In one embodiment, the base is provided with support legs at its bottom.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] The synchronous adjustment mechanism, consisting of a worm gear, bevel gear, and lead screw, drives multiple limit clamps to move synchronously towards or away from each other along the limit rail. This ensures uniform force during the clamping of the conductive ring and avoids correction deviations caused by eccentric clamping. Combined with the precise detection of the outer wall of the conductive ring by the indexing table on the support column, the concentricity correction accuracy is significantly improved, meeting the requirements of high-precision equipment for the use of conductive rings.

[0016] By utilizing the self-locking characteristics of the worm gear mechanism, the screw position can be automatically locked after the conductive ring is clamped, preventing loosening caused by external force or vibration and ensuring the stability of the detection and correction process. At the same time, the limiting boss on the worm gear cooperates with the limiting slide groove in the throttle to ensure axial positioning when the throttle transmits torque, avoiding radial offset or falling off, and further enhancing operational stability.

[0017] The throttle features a detachable design, facilitating flexible operation in space-constrained environments and preventing interference with the movement of other components. The adjustable support legs at the bottom of the base enhance overall stability and adapt to the on-site correction needs of different equipment. There is no need to disassemble the conductive ring and send it to a professional manufacturer, significantly shortening equipment downtime and reducing transportation and maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This application provides an overall schematic diagram of a conductive ring center correction device.

[0020] Figure 2 A schematic diagram of the adjustment mechanism of a conductive ring center correction device provided in this application;

[0021] Figure 3 Provided for this application Figure 1 Enlarged view of point A in the middle;

[0022] Figure 4 Provided for this application Figure 2 Enlarged diagram of point B in the middle.

[0023] Explanation of reference numerals in the attached drawings: 1. Base; 2. Ring rail; 31. Guide post; 32. First shaft seat; 33. Bearing platform; 35. Second shaft seat; 4. Limiting rail; 5. Clearance groove; 6. Limiting clamp; 7. Adjusting mechanism; 71. First bevel gear; 72. Second bevel gear; 73. Lead screw; 74. Connecting seat; 75. Worm gear; 76. Worm; 8. Support column; 9. Indexing indicator; 10. Support leg; 11. Throttle; 12. Limiting boss. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0025] See Figures 1 to 4As shown, this application provides a conductive ring center correction device, including a base 1, a ring rail 2 fixedly mounted on the base 1, a guide post 31 rotatably mounted inside the ring rail 2, a support platform 33 fixedly mounted at the end of the guide post 31 away from the base 1, a plurality of clearance grooves 5 evenly arranged around the circumference of the support platform 33, limit rails 4 are provided on both sides of the clearance grooves 5, limit clamps 6 are slidably mounted on the limit rails 4, the limit clamps 6 are connected to an adjustment mechanism 7, the adjustment mechanism 7 is located on the side of the support platform 33 near the base 1, and two support columns 8 are also fixedly mounted on the base 1, with an indexing table 9 mounted on the support columns 8.

[0026] When calibrating the conductive ring, it is first necessary to clamp and position it. During clamping, the conductive ring is first placed above the support platform 33, with its lower edge embedded between the limiting clamps 6. Then, the limiting clamps 6 are driven by the adjusting mechanism 7 to slide synchronously towards the center along the limiting rail 4, thus clamping the outer edge of the conductive ring. After clamping the conductive ring, the probe of the scale 9 is adjusted to contact the outer wall of the conductive ring. The support platform 33 is rotated, and the change in the scale 9 reading is observed. If the reading fluctuation exceeds the allowable range, the fluctuation value is recorded, the eccentricity is determined, and a mark is made on the conductive ring. After measurement, the conductive ring is removed, and it is machined according to the marked orientation and data to remove excess material and restore its surface smoothness and concentricity. After machining, it is reinstalled into the calibration device, and the center deviation is checked again using the scale to ensure it meets the technical requirements.

[0027] When removing the conductive ring, the adjustment mechanism 7 should be operated in reverse first to make the limiting clamp 6 slide outward along the limiting rail 4 to release the clamping force on the conductive ring. Then, the conductive ring should be taken out vertically upward to avoid scratching the bearing platform 33 and the limiting clamp 6.

[0028] Optionally, the adjustment mechanism 7 includes a first bevel gear 71 rotatably mounted on the support platform 33 via a bearing and a lead screw 73 rotatably mounted on the support platform 33 via a second shaft seat 35. A second bevel gear 72 is fixedly mounted at one end of the lead screw 73 near the first bevel gear 71, and the second bevel gear 72 meshes with the first bevel gear 71.

[0029] One end of the lead screw 73 is threadedly connected to a connecting seat 74, which is connected to the limiting clamp 6.

[0030] In this embodiment, rotating the first bevel gear 71 drives the second bevel gear 72 to rotate. The second bevel gear 72, in turn, drives the lead screw 73 to rotate synchronously, causing the connecting seat 74 to move axially. This, in turn, drives the limiting clamp 6 to slide on the limiting rail 4, achieving uniform clamping or loosening of the conductive ring. This ensures symmetrical force during clamping and avoids affecting calibration accuracy due to eccentric clamping. The two symmetrical lead screws 73 have opposite thread directions to ensure that the limiting clamps 6 on both sides move synchronously towards or away from each other, improving adjustment stability and accuracy.

[0031] It should be noted that this method of achieving linkage control of multiple limit clamps 6 not only simplifies the operation process, but also allows for adjustment of the relative position of the conductive ring and the support platform 33 during clamping, making the center of the conductive ring and the axis of the support platform 33 tend to coincide, thereby further improving the calibration accuracy of the conductive ring.

[0032] During the clamping and removal of the conductive ring, the operator must restrict the rotation of the support platform 33 to prevent it from rotating during the process, so as to prevent the adjustment mechanism 7 from experiencing transmission failure or mechanical interference due to the rotation of the support platform 33 when driving the limit clamp 6.

[0033] Optionally, a worm gear 75 is coaxially fixed on the first bevel gear 71, and a worm 76 is meshed with the worm gear 75. The worm 76 is rotatably mounted on the support platform 33 via the first bearing seat 35.

[0034] In this embodiment, the worm gear 76 drives the worm wheel 75 to rotate, which in turn drives the first bevel gear 71 to rotate, thereby controlling the lead screw 73. Simultaneously, the worm gear mechanism has a self-locking characteristic, automatically locking the lead screw 73 position after clamping, preventing loosening due to external force or vibration, and ensuring the conductive ring maintains a stable posture throughout the testing process. This structure not only improves the operational accuracy and safety of the device but also effectively reduces repetitive errors during the calibration process, making the concentricity adjustment of the conductive ring more reliable.

[0035] Optionally, a throttle 11 is inserted into one end of the worm gear 76 near the support column 8.

[0036] In this embodiment, the throttle 11 facilitates manual rotation of the worm gear 76 by the operator to control the limiting clamp 6. The detachable design of the throttle 11 allows for flexible operation in space-constrained environments while avoiding interference with the movement of other components.

[0037] Optionally, a limiting boss 12 is provided on the worm gear 76, and a limiting groove is provided in the throttle 11 corresponding to the limiting boss 12. During docking, the limiting boss 12 is slidably disposed in the limiting groove. The cooperation between the limiting boss 12 and the limiting groove realizes the axial positioning of the throttle 11 during rotation, preventing radial displacement or dislodgement and ensuring the stability of power transmission. When the throttle 11 is inserted into the worm gear 76, it slides axially to make the limiting groove engage with the limiting boss 12, forming a circumferential synchronous structure, thereby efficiently transmitting the manually applied torque to the worm gear 76 and driving the subsequent transmission mechanism to operate.

[0038] Optionally, the bottom of the base 1 is provided with support legs 10, which are evenly distributed around the base 1 to adjust the overall height of the device and enhance the stability of the support.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A conductive ring center correction device, characterized in that: The system includes a base (1), on which a ring rail (2) is fixedly mounted. A guide post (31) is rotatably mounted inside the ring rail (2). A support platform (33) is fixedly mounted at one end of the guide post (31) away from the base (1). Multiple clearance grooves (5) are evenly arranged around the circumference of the support platform (33). Limit rails (4) are provided on both sides of the clearance grooves (5). Limit clamps (6) are slidably mounted on the limit rails (4). The limit clamps (6) are connected to an adjustment mechanism (7). The adjustment mechanism (7) is located on the side of the support platform (33) close to the base (1). Two support columns (8) are also fixedly mounted on the base (1). A scale (9) is mounted on the support columns (8).

2. The conductive ring center correction device according to claim 1, characterized in that: The adjustment mechanism (7) includes a first bevel gear (71) rotatably mounted on the support platform (33) via a bearing and a lead screw (73) rotatably mounted on the support platform (33) via a second shaft seat (35). A second bevel gear (72) is fixedly mounted on one end of the lead screw (73) near the first bevel gear (71), and the second bevel gear (72) meshes with the first bevel gear (71). One end of the lead screw (73) is threadedly connected to a connecting seat (74), and the connecting seat (74) is connected to the limiting clamp (6).

3. The conductive ring center correction device according to claim 2, characterized in that: A worm gear (75) is coaxially fixed on the first bevel gear (71), and a worm (76) is meshed with the worm gear (75). The worm (76) is rotatably mounted on the support platform (33) through the first bearing seat (32).

4. The conductive ring center correction device according to claim 3, characterized in that: A throttle (11) is inserted into one end of the worm gear (76) near the support column (8).

5. A conductive ring center correction device according to claim 4, characterized in that: The worm (76) is provided with a limiting boss (12), and a limiting groove is provided in the throttle (11) corresponding to the limiting boss (12). When docking, the limiting boss (12) is slidably disposed in the limiting groove.

6. The conductive ring center correction device according to claim 1, characterized in that: The base (1) is provided with a support leg (10) at its bottom.

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