A surface quenching sensor for pulley annular groove

Abstract

The utility model relates to a surface quenching inductor for a pulley annular groove, comprising a heating body and a plurality of silicon steel sheets, wherein the heating body comprises an upper heating body, a lower heating body and a middle bottom wall heating body; the upper heating body is used for induction heating close to one side wall of the pulley annular groove, the lower heating body is used for induction heating close to the other side wall of the pulley annular groove, and the middle bottom wall heating body is used for induction heating close to the bottom wall of the pulley annular groove; a plurality of silicon steel sheets are stacked and distributed between the upper heating body and the lower heating body, the upper end of the middle bottom wall heating body is connected to the upper heating body, and the lower end of the middle bottom wall heating body is connected to the lower heating body. The heating time of the middle bottom wall in the pulley annular groove is extended, so that the inner wall of the pulley annular groove is heated evenly; the upper heating body and the lower heating body respectively perform induction heating on the opposite side walls of the pulley annular groove, and the structural design is simpler and convenient for processing and manufacturing.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat treatment processing, and specifically relates to a surface quenching sensor for a pulley annular groove. Background Art

[0002] During the manufacturing process of the pulley, the annular groove on its side needs to be quenched. The ordinary quenching sensor has a V-shaped structure to match the annular groove with a V-shaped cross-section, so that both side walls and the middle of the annular groove can be heated. Then the thickness of the two side walls surrounding the annular groove is different from the thickness of the middle bottom wall. The thickness of the two side walls is thinner, while the thickness of the middle bottom wall of the annular groove is thicker. In the process of the quenching sensor heating the annular groove, the heating speed of the two side walls is often fast, and the heating speed of the middle bottom wall is slow, resulting in insufficient temperature of the middle bottom wall. If heating continues, when the temperature of the middle bottom wall is reached, the two side walls will be overburned and cracks will appear. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a surface quenching sensor for a pulley annular groove, thereby solving the technical problem of uneven induction heating of the inner wall of the pulley annular groove.

[0004] In order to solve the above problems, the technical solution of the utility model is: a surface quenching sensor for a pulley annular groove, comprising:

[0005] The heating body comprises an upper heating body, a lower heating body and a middle bottom wall heating body; the upper heating body is used to be close to one side wall of the pulley annular groove for induction heating, the lower heating body is used to be close to the other side wall of the pulley annular groove for induction heating, and the middle bottom wall heating body is used to be close to the bottom wall of the pulley annular groove for induction heating; the upper heating body is located above the lower heating body, the upper end of the middle bottom wall heating body is connected to the upper heating body, and the lower end of the middle bottom wall heating body is connected to the lower heating body;

[0006] A plurality of silicon steel sheets are stacked and distributed between the upper heating body and the lower heating body, adjacent to the middle bottom wall heating body, and are used to concentrate the alternating magnetic field.

[0007] Optionally, the heating body comprises a copper tube, and the copper tube after being energized is used to be close to the inner wall of the annular groove of the pulley for induction heating.

[0008] Optionally, the copper tube includes an upper copper tube, a middle copper tube and a lower copper tube that are connected, the upper copper tube is close to one side wall of the pulley annular groove, the lower copper tube is close to the other side wall of the pulley annular groove, the middle copper tube is close to the middle bottom wall of the pulley annular groove, and the upper copper tube is located above the lower copper tube.

[0009] Optionally, the copper tube has a V-shaped structure matching the cross section of the annular groove of the pulley.

[0010] Optionally, cooling water flows in the copper tube to reduce the temperature of the copper tube.

[0011] Optionally, an upper limit plate and a lower limit plate are welded on the copper tube, and a plurality of silicon steel sheets are positioned between the upper limit plate and the lower limit plate.

[0012] Optionally, a plurality of silicon steel sheets are glued and fixed between the upper limit plate and the lower limit plate.

[0013] Optionally, a mounting seat is further included, a water spray box is arranged on the side of the mounting seat, the water spray box is connected to the quenching liquid flow channel inside the mounting seat, and the water spray box is used to spray quenching liquid on the heated pulley annular groove.

[0014] Optionally, a vertical insulating plate is fixedly installed on the upper part of the mounting seat, and a first copper plate and a second copper plate are respectively fixedly installed on the opposite side walls of the vertical insulating plate, the first copper plate and the second copper plate are separated by the vertical insulating plate, the upper copper tube is fixed on the first copper plate, and the lower copper tube is fixed on the second copper plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides an upper layer heating body, a middle bottom wall heating body and a lower layer heating body. The provision of the middle bottom wall heating body increases the induction heating time of the middle bottom wall of the wheel-changing annular groove with a thicker wall thickness, thereby improving the heating uniformity of the inner wall of the pulley annular groove. The upper layer heating body is used for induction heating one side wall of the pulley annular groove, and the lower layer heating body is used for induction heating the other side wall of the pulley annular groove. The structure is simple and the manufacturing cost is low. The induction heating time of the two side walls of the pulley annular groove with a thinner thickness is short, thereby further improving the induction heating uniformity of the inner wall of the pulley annular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the front side of the heating body in the embodiment;

[0018] Figure 2 This is a three-dimensional schematic diagram of the rear side of the heating body in the embodiment;

[0019] Figure 3 It is a plane schematic diagram of the heating body in the embodiment (in a V-shaped structure);

[0020] Figure 4 It is a side view schematic diagram of the silicon steel sheet and the heating body in the embodiment;

[0021] Figure 5 It is a top schematic diagram of the silicon steel sheet and the heating body in the embodiment;

[0022] Figure 6 This is a front position relationship diagram of the pulley and the heating body during the quenching process in the embodiment;

[0023] Figure 7 This is a side position relationship diagram of the pulley and the heating body during the quenching process in the embodiment;

[0024] Figure 8 This is a schematic diagram of the connection between the heating body and the mounting base in the embodiment;

[0025] Fig. 9 Schematic diagram of the positional relationship among the mounting base, the heating element and the pulley in the embodiment.

[0026] Figure numerals: 1, heating body; 11, upper copper tube; 12, middle copper tube; 13, lower copper tube; 14, upper limit plate; 15, lower limit plate; 2, silicon steel sheet; 3, pulley; 31, annular groove; 311, side wall; 312, middle bottom wall; 4, mounting seat; 41, vertical insulating plate; 42, first copper plate; 421, first cooling water pipe; 43, second copper plate; 431, second cooling water pipe; 44, quenching liquid flow channel; 45, water spray box. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Example: Figure 1-Figure 9 As shown, this embodiment provides a surface quenching inductor for a pulley annular groove, comprising a heating body 1 and a plurality of silicon steel sheets 2, the heating body 1 comprising an upper heating body, a lower heating body and a middle bottom wall heating body; the upper heating body is used for induction heating of one side wall 311 of the annular groove 31 close to the pulley 3, the lower heating body is used for induction heating of the other side wall 311 of the annular groove 31 close to the pulley 3, and the middle bottom wall heating body is used for induction heating of the bottom wall of the annular groove 31 close to the pulley 3; the upper heating body is located above the lower heating body; a plurality of silicon steel sheets 2 are stacked and distributed between the upper heating body and the lower heating body, the upper end of the middle bottom wall heating body is connected to the upper heating body, the lower end of the middle bottom wall heating body is connected to the lower heating body, a plurality of silicon steel sheets 2 are adjacent to the middle bottom wall heating body, and a plurality of silicon steel sheets 2 are used for concentrating the alternating magnetic field for effective induction.

[0029] Through the above arrangement, during the quenching process, the pulley 3 is placed vertically and the pulley 3 rotates around the horizontal rotation axis, and the heating part of the heating body 1 is extended into the annular groove 31 of the pulley 3. The upper heating body performs induction heating on one side wall 311 of the annular groove 31 of the pulley 3, the lower heating body performs induction heating on the other side wall 311 of the annular groove 31 of the pulley 3, and the middle bottom wall heating body performs induction heating on the middle bottom wall 312 of the annular groove 31 of the pulley 3, so that the entire inner wall of the annular groove 31 of the pulley 3 is heated during the rotation of the pulley 3; there is a distance between the upper heating body and the lower heating body, and the middle bottom wall heating body is used to connect the upper heating body and the lower heating body to keep the heating The integrity of the body 1, the middle bottom wall heating body has a certain length, and its shortest length is the distance between the upper heating body and the lower heating body. By setting a certain length of the middle bottom wall heating body, during the rotation of the pulley 3, the middle bottom wall 312 of the annular groove 31 of the pulley 3 moves from the lower end to the upper end of the middle bottom wall heating body. During this process, the middle bottom wall 312 is always heated, thereby extending the heating time of the middle bottom wall 312 in the annular groove 31 of the pulley 3, so that the inner wall of the annular groove 31 of the pulley 3 is heated evenly; the upper heating body and the lower heating body respectively perform induction heating on the opposite side walls 311 of the annular groove 31 of the pulley 3, and the structural design is simpler and convenient for processing and manufacturing.

[0030] Attached Figure 6 , Attachment Figure 7 and attached Fig. 9 The "in" marked in the figure refers to the cooling water inflow direction, and the "out" marked in the figure refers to the cooling water outflow direction. Fig. 9 The arrow in the figure shows the flow direction of cooling water.

[0031] In a surface quenching inductor for a pulley annular groove of the present embodiment, a heating body 1 comprises a copper tube, and the copper tube after being energized is used to be close to the inner wall of the annular groove 31 of the pulley 3 to perform induction heating on the inner wall of the annular groove 31 of the pulley 3 .

[0032] In a surface quenching inductor of a pulley annular groove of the present embodiment, the copper tube includes an upper copper tube 11, a middle copper tube 12 and a lower copper tube 13 connected to each other, the upper copper tube 11 is close to one side wall 311 of the annular groove 31 of the pulley 3, the lower copper tube 13 is close to the other side wall 311 of the annular groove 31 of the pulley 3, the middle copper tube 12 is close to the middle bottom wall 312 of the annular groove 31 of the pulley 3, and the upper copper tube 11 is located above the lower copper tube 13. Specifically, the upper heating body includes the upper copper tube 11, the lower heating body includes the lower copper tube 13, and the middle bottom wall heating body includes the middle copper tube 12. Through the cooperation of the upper copper tube 11, the middle copper tube 12 and the lower copper tube 13, the induction heating of the inner wall of the annular groove 31 of the pulley 3 is achieved.

[0033] In a surface quenching inductor of a pulley annular groove of the present embodiment, the copper tube has a V-shaped structure that matches the cross section of the annular groove 31 of the pulley 3. Specifically, viewed from the vertical direction, the upper copper tube 11 and the lower copper tube 13 form a V-shaped structure that matches the cross section of the annular groove 31 of the pulley 3. Optionally, the upper copper tube 11 and the lower copper tube 13 are both bent tubes, the plane where the upper copper tube 11 is located is parallel to the plane where the lower copper tube 13 is located, the middle copper tube 12 is perpendicular to the plane where the upper copper tube 11 is located, and the middle copper tube 12 is perpendicular to the plane where the lower copper tube 13 is located. Specifically, the upper copper tube 11, the middle copper tube 12 and the lower copper tube 13 form a V-shaped structure.

[0034] In a surface quenching inductor of a pulley annular groove of the present embodiment, cooling water flows in the copper tube to cool the copper tube that is energized.

[0035] In the surface quenching inductor of a pulley annular groove of this embodiment, an upper limit plate 14 and a lower limit plate 15 are welded on the copper tube, and a plurality of silicon steel sheets 2 are positioned between the upper limit plate 14 and the lower limit plate 15. The structure is simple, the cost is low, and the silicon steel sheets 2 are convenient to install.

[0036] In the surface quenching inductor of a pulley annular groove of this embodiment, a plurality of silicon steel sheets 2 are glued and fixed between an upper limit plate 14 and a lower limit plate 15. The structure is simple, and the installation stability of the silicon steel sheets 2 is improved.

[0037] In the surface quenching inductor of a pulley annular groove of the present embodiment, a mounting seat 4 is further included. A water spray box 45 is arranged on the side of the mounting seat 4. The water spray box 45 is connected to a quenching liquid flow channel 44 inside the mounting seat 4. The water spray box 45 is used to spray quenching liquid on the inner wall of the annular groove 31 of the heated pulley 3 to complete the quenching process of the inner wall of the annular groove 31 of the pulley 3. Optionally, the mounting seat 4 is mounted on a machine tool.

[0038] In a surface hardening inductor of a pulley annular groove of the present embodiment, a vertical insulating plate 41 is fixedly arranged on the upper part of the mounting seat 4, and a first copper plate 42 and a second copper plate 43 are fixedly arranged on opposite side walls 311 of the vertical insulating plate 41, respectively. The first copper plate 42 and the second copper plate 43 are separated by the vertical insulating plate 41, and the upper copper tube 11 is fixed on the first copper plate 42, and the lower copper tube 13 is fixed on the second copper plate 43. Such an arrangement has a simple structure and improves the installation stability of the copper tube. Optionally, positioning holes are provided on both the first copper plate 42 and the second copper plate 43, and the upper copper tube 11 is positioned on the first copper plate 42 by fasteners, and the lower copper tube 13 is positioned on the second copper plate 43 by fasteners.

[0039] Optionally, a first cooling water pipe 421 is provided on the first copper plate 42 , and a second cooling water pipe 431 is provided on the second copper plate 43 . The first cooling water pipe 421 is connected to the upper copper tube 11 , and the second cooling water pipe 431 is connected to the lower copper tube 13 .

[0040] Optionally, the mounting seat 4 is an insulating seat, one of the functions of the mounting seat 4 is to serve as a passage for the quenching liquid, and the second function of the mounting seat 4 is to fix the vertical insulating plate 41, so as to further install the first copper plate 42 and the second copper plate 43. The vertical insulating plate 41 is used to separate the positive and negative electrodes, and one of the first copper plate 42 and the second copper plate 43 is the positive electrode, and the other is the negative electrode.

[0041] In the surface hardening inductor of the pulley annular groove of the present embodiment, the copper tube is used to conduct the mid-frequency current and plays a leading role in the induction.

[0042] The surface quenching sensor of the pulley annular groove of this embodiment has the following working principle for quenching the inner wall of the annular groove 31 of the pulley 3:

[0043] 1. Install the mounting base 4 on the quenching machine equipment and pass cooling water into the copper tube;

[0044] 2. Adjust the set coupling distance between the copper tube and the surface quenching area of ​​the pulley 3 casting, and open the quenching liquid channel;

[0045] 3. Power on the copper tube to start quenching. The surface quenching area of ​​the pulley 3 casting moves evenly toward the quenching liquid so that the quenching liquid is sprayed on the surface quenching area of ​​the pulley 3 casting to complete the quenching process.

Claims

1. A surface quenching sensor for a pulley annular groove, characterized in that: include: The heating body (1) comprises an upper heating body, a lower heating body and a middle bottom wall heating body; the upper heating body is used to perform induction heating on one side wall (311) of the annular groove (31) close to the pulley (3), the lower heating body is used to perform induction heating on the other side wall (311) of the annular groove (31) close to the pulley (3), and the middle bottom wall heating body is used to perform induction heating on the bottom wall of the annular groove (31) close to the pulley (3); the upper heating body is located above the lower heating body, the upper end of the middle bottom wall heating body is connected to the upper heating body, and the lower end of the middle bottom wall heating body is connected to the lower heating body; A plurality of silicon steel sheets (2) are stacked and distributed between the upper layer heating body and the lower layer heating body, adjacent to the middle bottom wall heating body, and are used to concentrate the alternating magnetic field.

2. A surface quenching sensor for a pulley annular groove according to claim 1, characterized in that: The heating body (1) comprises a copper tube, and the copper tube, after being energized, is used to be close to the inner wall of the annular groove (31) of the pulley (3) for induction heating.

3. The surface quenching sensor of the pulley annular groove according to claim 2, characterized in that: The copper tube comprises an upper copper tube (11), a middle copper tube (12) and a lower copper tube (13) which are connected to each other. The upper copper tube (11) is close to one side wall (311) of the annular groove (31) of the pulley (3), the lower copper tube (13) is close to the other side wall (311) of the annular groove (31) of the pulley (3), the middle copper tube (12) is close to the middle bottom wall (312) of the annular groove (31) of the pulley (3), and the upper copper tube (11) is located above the lower copper tube (13).

4. The surface quenching sensor of the pulley annular groove according to claim 2, characterized in that: The copper tube has a V-shaped structure that matches the cross section of the annular groove (31) of the pulley (3).

5. The surface quenching sensor of the pulley annular groove according to claim 2, characterized in that: Cooling water flows in the copper tube to reduce the temperature of the copper tube.

6. The surface quenching sensor of the pulley annular groove according to claim 1, characterized in that: An upper limit plate (14) and a lower limit plate (15) are welded on the copper tube, and a plurality of silicon steel sheets (2) are positioned between the upper limit plate (14) and the lower limit plate (15).

7. The surface quenching sensor of the pulley annular groove according to claim 6, characterized in that: A plurality of silicon steel sheets (2) are glued and fixed between the upper limit plate (14) and the lower limit plate (15).

8. The surface quenching sensor of the pulley annular groove according to claim 3, characterized in that: It also includes a mounting seat (4), a water spray box (45) is arranged on the side of the mounting seat (4), the water spray box (45) is connected to the quenching liquid flow channel (44) inside the mounting seat (4), and the water spray box (45) is used to spray the quenching liquid on the annular groove (31) of the heated pulley (3).

9. The surface quenching sensor of the pulley annular groove according to claim 8, characterized in that: A vertical insulating plate (41) is fixedly arranged on the upper part of the mounting seat (4); a first copper plate (42) and a second copper plate (43) are respectively fixedly arranged on opposite side walls (311) of the vertical insulating plate (41); the first copper plate (42) and the second copper plate (43) are separated by the vertical insulating plate (41); the upper copper tube (11) is fixed on the first copper plate (42); and the lower copper tube (13) is fixed on the second copper plate (43).

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