A self-adjusting coupling gap multi-tracking quenching inductor

Abstract

This utility model belongs to the field of bearing technology and proposes a multi-tracking quenching inductor with self-adjusting coupling gap. The multi-tracking quenching inductor has an L-shaped connecting plate; an axial tracking sensor is fixed on the horizontal plate of the L-shaped connecting plate; a displacement sensor is installed at the corner of the L-shaped connecting plate, and the output end of the displacement sensor is connected to an inclined rod arranged parallel to the raceway surface of the bearing ring; the other end of the inclined rod is hinged to the end of the vertical plate of the L-shaped connecting plate; radial tracking sensors I, II, and III for real-time tracking of the raceway surface of the bearing ring are installed on the inclined rod; radial tracking sensor II is located between radial tracking sensors I and III; the radial tracking sensors I, II, and III are arranged perpendicular to the raceway surface of the bearing ring; and a silicon steel sheet assembly is installed on the inclined rod. This utility model ensures the consistency of the hardened layer depth during induction quenching.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, specifically relating to a multi-tracking quenching inductor that self-adjusts the coupling gap. Background Technology

[0002] The main product structures currently used in wind turbine main shaft bearings include single-row tapered roller bearings, double-row tapered roller bearings, and double-row self-aligning roller bearings. With the increasing size of wind turbines, the main bearing dimensions are becoming larger, and more and more large-diameter main bearings are being widely used in high-power wind turbines. Among them, single-row tapered roller main shaft bearings used in back-to-back configurations belong to the thin and light series. A new technology route, soft-strip induction hardening, is under research and development. The reason why this new technology route is valued by major enterprises is that it can significantly reduce manufacturing costs, while also having a huge processing efficiency advantage compared to carburizing quenching and bainitic quenching. Its comprehensive technological advantages determine that this heat treatment process will have a wide range of applications in the future.

[0003] However, one of the reasons restricting the widespread adoption and application of non-strip induction hardening technology is that thin-walled bearing rings often face significant quenching deformation after non-strip hardening. Since induction hardening utilizes eddy currents generated by high-frequency alternating electromagnetic induction to continuously scan and harden along the raceway circumference, rather than overall heating and hardening, the thermal expansion of the workpiece, the microstructure transformation time, and the inconsistent distribution of residual stress all contribute to significant deformation of the quenched rings. The quenching ellipse in its free state is approximately twice that of carburizing and bainitic quenching, resulting in insufficient and uneven hardened layers and ultimately, product scrap. Furthermore, due to the non-uniform wall thickness cross-section, the quenched workpiece not only exhibits elliptical deformation but also experiences significant changes in cone angle and end-face warping. This not only significantly impacts subsequent manufacturing processes but also poses a risk and challenge to the lifespan of wind turbine main bearings when using such finished bearing rings. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to propose a multi-tracking quenching inductor that can adjust the coupling gap itself.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-tracking quenching inductor with self-adjusting coupling gap is disclosed. The multi-tracking quenching inductor includes a connecting plate; the connecting plate is L-shaped, and an axial tracking sensor for tracking the end face of a bearing race is fixed on the horizontal plate of the L-shaped connecting plate; a displacement sensor is installed at the corner of the L-shaped connecting plate, and the output end of the displacement sensor is connected to an inclined rod parallel to the raceway surface of the bearing race; the other end of the inclined rod is hinged to the end of the vertical plate of the L-shaped connecting plate; a radial tracking sensor for real-time tracking of the raceway surface of the bearing race is installed on the inclined rod; there are three radial tracking sensors: radial tracking sensor I, radial tracking sensor II, and radial tracking sensor III; radial tracking sensor II is located between radial tracking sensor I and radial tracking sensor III; radial tracking sensors I, II, and III are arranged perpendicular to the raceway surface of the bearing race; a silicon steel sheet assembly for induction quenching is installed on the inclined rod; the silicon steel sheet assembly is arranged parallel to the raceway surface.

[0007] The radial tracking sensors I, II, and III are spaced apart. When the coupling gap detected by radial tracking sensor I is greater than that detected by radial tracking sensor III (i.e., the coupling gap exceeds 0.3 mm), a signal will be transmitted to the displacement sensor. The output end of the displacement sensor will move to the left to reduce the coupling gap at the position of radial tracking sensor I, ensuring that the coupling gaps at the positions of radial tracking sensor I and radial tracking sensor III are the same.

[0008] This invention proposes a multi-tracking quenching inductor that self-adjusts the coupling gap. During the quenching process, when the radial tracking sensor I and radial tracking sensor III detect a coupling gap difference greater than 0.3 mm, the displacement adjuster will adjust the coupling gap to ensure that the coupling gaps detected by radial tracking sensor I, radial tracking sensor II, and radial tracking sensor III are consistent, thereby ensuring the consistency of the hardened layer depth of induction quenching. Attached Figure Description

[0009] Figure 1 is a schematic diagram of this utility model.

[0010] In the diagram: 1. Bearing ring, 2. Axial tracking sensor, 3. Radial tracking sensor I, 4. Silicon steel sheet assembly, 5. Radial tracking sensor II, 6. Displacement adjuster, 7. Radial tracking sensor III, 8. Connecting plate. Detailed Implementation

[0011] The present invention will be described in conjunction with the accompanying drawings and specific examples:

[0012] like Figure 1As shown, a multi-tracking quenching sensor with self-adjusting coupling gap is disclosed. The multi-tracking quenching sensor has a connecting plate 8; the connecting plate 8 is L-shaped, and an axial tracking sensor 2 for tracking the end face of a bearing race is fixed on the horizontal plate of the L-shaped connecting plate; a displacement sensor 6 is installed at the corner of the L-shaped connecting plate, and the output end of the displacement sensor 6 is connected to an inclined rod arranged parallel to the raceway surface of the bearing race; the other end of the inclined rod is hinged to the end of the vertical plate of the L-shaped connecting plate; and a sensor for tracking the end face of the bearing race is installed on the inclined rod. A radial tracking sensor for real-time tracking of the raceway surface; there are three radial tracking sensors: radial tracking sensor I3, radial tracking sensor II5, and radial tracking sensor III7; radial tracking sensor II5 is located between radial tracking sensor I3 and radial tracking sensor III7; radial tracking sensor I3, radial tracking sensor II6, and radial tracking sensor III7 are arranged perpendicular to the raceway surface of bearing ring 1; the inclined rod is equipped with a silicon steel sheet assembly 4 for induction hardening; the silicon steel sheet assembly is arranged parallel to the raceway surface.

[0013] During the inductor quenching process, when the radial tracking sensor I3 and radial tracking sensor III7 detect a coupling gap difference greater than 0.3mm, the displacement adjuster 6 will adjust the coupling gap to ensure that the coupling gaps detected by radial tracking sensor I3, radial tracking sensor II5, and radial tracking sensor III7 are consistent.

Claims

1. A multi-tracking quenching inductor with self-adjusting coupling gap, characterized in that: The multi-tracking quenching inductor has a connecting plate; the connecting plate is L-shaped, and an axial tracking sensor for tracking the end face of the bearing race is fixed on the horizontal plate of the L-shaped connecting plate; a displacement sensor is installed at the corner of the L-shaped connecting plate, and the output end of the displacement sensor is connected to an inclined rod arranged parallel to the raceway surface of the bearing race; the other end of the inclined rod is hinged to the end of the vertical plate of the L-shaped connecting plate; a radial tracking sensor for real-time tracking of the raceway surface of the bearing race is installed on the inclined rod; there are three radial tracking sensors: radial tracking sensor I, radial tracking sensor II, and radial tracking sensor III; radial tracking sensor II is located between radial tracking sensor I and radial tracking sensor III; radial tracking sensor I, radial tracking sensor II, and radial tracking sensor III are arranged perpendicular to the raceway surface of the bearing race; a silicon steel sheet assembly for induction quenching is installed on the inclined rod; the silicon steel sheet assembly is arranged parallel to the raceway surface.

2. The multi-tracking quenching inductor with self-adjusting coupling gap as described in claim 1, characterized in that: The radial tracking sensor I, radial tracking sensor II, and radial tracking sensor III are arranged at intervals.

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