CN216337795U - Inductor for quenching raceway of inner gear ring of slewing bearing - Google Patents
Inductor for quenching raceway of inner gear ring of slewing bearing Download PDFInfo
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- CN216337795U CN216337795U CN202123063218.6U CN202123063218U CN216337795U CN 216337795 U CN216337795 U CN 216337795U CN 202123063218 U CN202123063218 U CN 202123063218U CN 216337795 U CN216337795 U CN 216337795U
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Abstract
The utility model provides a sensor for quenching a raceway of an inner gear ring of a slewing bearing, which comprises a quenching cavity for quenching the raceway of the inner gear ring of the slewing bearing and a cooling cavity for cooling the raceway of the inner gear ring of the slewing bearing after quenching; the quenching cavity is of an inverted U-shaped structure and comprises a first left end face, a first upper end face and a first right end face which are sequentially connected; the cooling cavity is of an inverted U-shaped structure and comprises a second left end face, a second upper end face and a second right end face which are sequentially connected. According to the utility model, the quenching cavities are adopted for carrying out quenching treatment on the inner gear ring raceways of the large three-row combined slewing bearing simultaneously during hot working quenching treatment, so that the problem that quenching cracks and soft spots are easily generated at the edge connecting parts of the raceways due to secondary quenching because multiple times of quenching treatment are adopted for multiple surfaces of the inner gear ring raceways of the slewing bearing in the prior art is solved, and the heat treatment quality in the whole quenching treatment process is improved.
Description
Technical Field
The utility model relates to the technical field of slewing bearings, in particular to an inductor for quenching an inner gear ring raceway of a slewing bearing.
Background
Compared with the heating quenching in a common furnace, the induction quenching has the advantages of high heating speed, high efficiency and capability of realizing local quenching, thereby being more and more applied in the field of hot working. At present, induction quenching plays a significant role in improving the hardness of the surface of a bearing raceway and ensuring the depth of a sufficient hardening layer when a thermal processing is carried out on the raceway of the inner gear ring of a large-sized slewing bearing in a heading machine and a wind power project. The inner gear ring of the bearing has a plurality of continuous raceway surfaces, and the induction quenching mode directly influences the hot working efficiency and the final raceway surface quality, so how to avoid cracks generated by secondary quenching at the junction of the raceway surfaces becomes a problem to be solved in the bearing hot working industry. In the prior art, generally, a chamfer design is adopted on a connecting surface of a bearing raceway in the structure to avoid a sharp angle effect generated in an induction quenching process, but the method is often used for hardening cracks of the inner gear ring raceway of the slewing bearing at the connecting part of the inner gear ring raceway and an inductor due to an improper induction heating mode; at present, the inner ring raceways of the large three-row combined slewing bearing are subjected to induction quenching, most of the inner ring raceways are subjected to induction heating by using a single-sided inductor (namely, each raceway of the inner ring gear is subjected to separate heating quenching by adopting an inductor designed independently), the quenching mode is low in processing efficiency firstly, long in production period and not beneficial to tempering within a specified time after quenching, meanwhile, during single-sided quenching, the joint of the two raceways is easy to cause quench cracking due to secondary quenching, the risk of the whole processing process is increased, and during secondary quenching, inevitable local tempering is caused to the firstly quenched raceway, so that soft spots exist on the surface of the firstly quenched raceway.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an inductor for quenching a raceway of an inner gear ring of a slewing bearing, aiming at overcoming the defects of the prior art.
In order to achieve the aim, the utility model provides an inductor for quenching a raceway of an inner gear ring of a slewing bearing, which comprises a quenching cavity for quenching the raceway of the inner gear ring of the slewing bearing and a cooling cavity for cooling the raceway of the inner gear ring of the slewing bearing after quenching;
the quenching position/area of the inner gear ring raceway of the slewing bearing comprises a first side surface, a second side surface and a third side surface which are sequentially connected;
the quenching cavity is of an inverted U-shaped structure and comprises a first left end face, a first upper end face and a first right end face which are sequentially connected, and the first left end face, the first upper end face and the first right end face are respectively arranged corresponding to a first side face, a second side face and a third side face of an inner gear ring raceway of the slewing bearing;
the cooling cavity is of an inverted U-shaped structure and comprises a second left end face, a second upper end face and a second right end face which are sequentially connected, and the second left end face, the second upper end face and the second right end face are respectively arranged corresponding to the first side face, the second side face and the third side face of the inner gear ring raceway of the slewing bearing.
Preferably, the coupling gap between the first left end face and the first side face gradually increases from bottom to top.
Preferably, the coupling gap between the first right end face and the third side face gradually increases from bottom to top.
Preferably, the coupling gap between the first left end face and the first side face is set to be 1.5mm-10.0 mm.
Preferably, the coupling gap between the first right end face and the third side face is set to be 1.5mm-10.0 mm.
Preferably, the minimum coupling gap between the first left end face and the first side face is set to be 3.0mm, and the maximum coupling gap is set to be 7.0 mm.
Preferably, the minimum coupling gap between the first right end face and the third side face is set to be 3.0mm, and the maximum coupling gap is set to be 7.0 mm.
Preferably, spraying areas are arranged on the second left end face, the second upper end face and the second right end face, and a gap for avoiding an edge chamfer of an inner gear ring raceway of the slewing bearing is arranged between every two adjacent spraying areas.
Preferably, the spraying area is provided with a distance of 4.0mm-9.0mm with the first side surface, the second side surface and the third side surface.
Preferably, the distance between the spraying area and the first side surface, the distance between the spraying area and the second side surface and the distance between the spraying area and the third side surface are set to be 6.5 mm.
Compared with the prior art, the utility model has the following beneficial effects:
(1) according to the utility model, the quenching cavities are adopted for carrying out quenching treatment on the inner gear ring raceways of the large three-row combined slewing bearing simultaneously during hot working quenching treatment, so that the problem that quenching cracks and soft spots are easily generated at the edge connecting parts of the raceways due to secondary quenching because multiple times of quenching treatment are adopted for multiple surfaces of the inner gear ring raceways of the slewing bearing in the prior art is solved, and the heat treatment quality in the whole quenching treatment process is improved.
(2) According to the utility model, the coupling gap between the quenching cavity and the quenching surface of the inner gear ring raceway of the slewing bearing is gradually increased from bottom to top, so that the generation of a sharp angle effect is further weakened.
(3) According to the utility model, the cooling area of the cooling cavity and the edge chamfer of the inner gear ring raceway of the slewing bearing are arranged at intervals, so that cooling liquid cannot be directly sprayed on the edge cracking area, and the quenching crack caused by rapid cooling of the inner gear ring raceway of the slewing bearing is avoided.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic connection diagram of a quenching end of a quenching inductor for hot working of an inner gear ring raceway of an integrated slewing bearing and the inner gear ring raceway of the slewing bearing in an embodiment 1 of the utility model;
FIG. 2 is a schematic diagram of the structure of the quench chamber of FIG. 1;
FIG. 3 is a schematic structural diagram of a raceway of an inner gear ring of the slewing bearing in FIG. 1;
FIG. 4 is a schematic diagram of the connection between a cooling part of an inductor for quenching raceway of an inner ring gear of a slewing bearing and the raceway of the inner ring gear of the slewing bearing in the practical example 1 of the utility model;
fig. 5 is a schematic structural view of the cooling chamber of fig. 2.
Wherein:
1. the quenching device comprises a quenching cavity, 1.1, a first left end face, 1.2, a first upper end face, 1.3, a first right end face, 2, a cooling cavity, 2.1, a second left end face, 2.2, a second upper end face, 2.3, a second right end face, 2.4, a spraying area, 3, a slewing bearing inner gear ring raceway, 3.1, a first side face, 3.2, a second side face, 3.3 and a third side face.
Detailed Description
In order to make the aforementioned objects, features, advantages, and the like of the present invention more clearly understandable, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the drawings of the present invention are simplified and are not to precise scale, and are provided for convenience and clarity in assisting the description of the embodiments of the present invention; the several references in this disclosure are not limited to the particular numbers in the examples of the figures; the directions or positional relationships indicated by ' front ' middle, ' rear ' left ', right ', upper ', lower ', top ', bottom ', middle ', etc. in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor should be construed as limiting the present invention.
Example 1:
referring to fig. 1 to 5, the inductor for quenching the raceway of the ring gear of the slewing bearing provided by the utility model comprises a quenching chamber 1 for quenching the raceway 3 of the ring gear of the slewing bearing and a cooling chamber 2 for cooling the raceway 3 of the ring gear of the slewing bearing after quenching;
the quenching end of the inner gear ring raceway 3 of the slewing bearing comprises a first side surface 3.1, a second side surface 3.2 and a third side surface 3.3 which are sequentially connected;
the quenching cavity 1 is of an inverted U-shaped structure and comprises a first left end surface 1.1, a first upper end surface 1.2 and a first right end surface 1.3 which are sequentially connected, wherein the first left end surface 1.1, the first upper end surface 1.2 and the first right end surface 1.3 are respectively arranged opposite to a first side surface 3.1, a second side surface 3.2 and a third side surface 3.3 of an inner gear ring raceway 3 of the slewing bearing;
the cooling cavity 2 is of an inverted U-shaped structure and comprises a second left end face 2.1, a second upper end face 2.2 and a second right end face 2.3 which are sequentially connected, wherein the second left end face 2.1, the second upper end face 2.2 and the second right end face 2.3 are respectively arranged opposite to a first side face 3.1, a second side face 3.2 and a third side face 3.3 of the inner gear ring raceway 3 of the slewing bearing.
And the second left end surface 2.1, the second upper end surface 2.2 and the second right end surface 2.3 are respectively provided with a spraying area 2.4 for cooling the inner gear ring raceway 3 of the slewing bearing.
Preferably, in order to effectively reduce the generation of the sharp angle effect at the connection position of the first side surface 3.1 and the second side surface 3.2 of the inner gear race 3 of the slewing bearing in the quenching process, the first left end surface 1.1 is obliquely arranged in a manner of gradually departing from the first side surface 3.1 from bottom to top, the coupling gap between the lower end point of the first left end surface 1.1 and the first side surface 3.1 (i.e. the minimum coupling gap between the first left end surface 1.1 and the first side surface 3.1) is preferably set to be 1.5mm, and the coupling gap between the upper end point of the first left end surface 1.1 and the first side surface 3.1 (i.e. the maximum coupling gap between the first left end surface 1.1 and the first side surface 3.1) is preferably set to be 4.0 mm.
Similarly, in order to effectively reduce the generation of the sharp angle effect at the connection position of the second side surface 3.2 and the third side surface 3.3 of the inner gear race 3 of the slewing bearing in the quenching process, the first right end surface 1.3 is obliquely arranged in a manner of gradually keeping away from the third side surface 3.3 from bottom to top, the coupling gap between the lower end point of the first right end surface 1.3 and the third side surface 3.3 (i.e. the minimum coupling gap between the first right end surface 1.3 and the first side surface 3.1) is preferably set to be 1.5mm, and the coupling gap between the upper end point of the first right end surface 1.3 and the third side surface 3.3 (i.e. the maximum coupling gap between the first right end surface 1.3 and the first side surface 3.1) is preferably set to be 4.0 mm.
Preferably, in order to avoid quench cracking at the joint of the first side surface 3.1 and the second side surface 3.2 in the cooling process of the inner gear ring raceway 3 of the slewing bearing due to rapid cooling, a distance for avoiding the chamfer position at the joint of the first side surface 3.1 and the second side surface 3.2 is arranged between the spraying areas 2.4 arranged on the second left end surface 2.1 and the second upper end surface 2.2, and the distance is preferably set to be 4.0 mm.
Similarly, in order to avoid the quench cracking of the joint of the second side surface 3.2 and the third side surface 3.3 caused by rapid cooling in the cooling process of the inner gear ring raceway 3 of the slewing bearing, a distance for avoiding the chamfer position of the joint of the second side surface 3.2 and the third side surface 3.3 is arranged between the spraying areas 2.4 arranged on the second upper end surface 2.2 and the third right end surface 2.3, and the distance is preferably set to be 4.0 mm.
Example 2:
in addition to the structure described in practical example 1, the coupling gap between the lower end point of the first left end face 1.1 and the first side face 3.1 may be set to 3.0mm, and the coupling gap between the upper end point of the first left end face 1.1 and the first side face 3.1 may be set to 7.0 mm;
the coupling gap between the lower end point of the first right end face 1.3 and the third side face 3.3 can also be set to be 3.0mm, and the coupling gap between the upper end point of the first right end face 1.3 and the third side face 3.3 can also be set to be 7.0 mm;
the distance between the spraying areas 2.4 arranged on the second left end surface 2.1 and the second upper end surface 2.2 can also be set to be 6.5 mm;
the distance between the spraying areas 2.4 arranged on the second upper end surface 2.2 and the third right end surface 2.3 can also be set to be 6.5 mm.
Example 3:
in addition to the structures described in practical examples 1 and 2, the coupling gap between the lower end point of the first left end face 1.1 and the first side face 3.1 can be set to 4.0mm, and the coupling gap between the upper end point of the first left end face 1.1 and the first side face 3.1 can be set to 10.0 mm;
the coupling gap between the lower end point of the first right end face 1.3 and the third side face 3.3 can also be set to be 4.0mm, and the coupling gap between the upper end point of the first right end face 1.3 and the third side face 3.3 can also be set to be 10.0 mm;
the distance between the spraying areas 2.4 arranged on the second left end surface 2.1 and the second upper end surface 2.2 can also be set to be 9.0 mm;
the distance between the spraying areas 2.4 arranged on the second upper end surface 2.2 and the third right end surface 2.3 can also be set to be 9.0 mm.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A sensor for quenching raceway of inner gear rings of slewing bearing is characterized in that: the quenching device comprises a quenching cavity (1) for quenching the inner gear ring raceway (3) of the slewing bearing and a cooling cavity (2) for cooling the inner gear ring raceway (3) of the slewing bearing after quenching;
the quenching position/area of the inner gear ring raceway (3) of the slewing bearing comprises a first side surface (3.1), a second side surface (3.2) and a third side surface (3.3) which are sequentially connected;
the quenching cavity (1) is of an inverted U-shaped structure and comprises a first left end surface (1.1), a first upper end surface (1.2) and a first right end surface (1.3) which are sequentially connected, wherein the first left end surface (1.1), the first upper end surface (1.2) and the first right end surface (1.3) are respectively arranged corresponding to a first side surface (3.1), a second side surface (3.2) and a third side surface (3.3) of an inner gear ring raceway (3) of the slewing bearing;
the cooling cavity (2) is of an inverted U-shaped structure and comprises a second left end face (2.1), a second upper end face (2.2) and a second right end face (2.3), wherein the second left end face (2.1), the second upper end face (2.2) and the second right end face (2.3) are sequentially connected, and the second left end face (2.1), the second upper end face (2.2) and the second right end face (2.3) are respectively arranged corresponding to a first side face (3.1), a second side face (3.2) and a third side face (3.3) of the inner gear ring raceway (3) of the slewing bearing.
2. The inductor of claim 1, wherein: the coupling gap between the first left end face (1.1) and the first side face (3.1) is gradually increased from bottom to top;
the coupling gap between the first right end face (1.3) and the third side face (3.3) is gradually increased from bottom to top.
3. The inductor of claim 2, wherein: the coupling gap between the first left end face (1.1) and the first side face (3.1) is set to be 1.5mm-10.0 mm;
the coupling gap between the first right end face (1.3) and the third side face (3.3) is set to be 1.5mm-10.0 mm.
4. The inductor of claim 3, wherein: the minimum coupling gap between the first left end face (1.1) and the first side face (3.1) is set to be 3.0mm, and the maximum coupling gap is set to be 7.0 mm;
the minimum coupling gap between the first right end face (1.3) and the third side face (3.3) is set to be 3.0mm, and the maximum coupling gap is set to be 7.0 mm.
5. The inductor of claim 1, wherein: and the second left end face (2.1), the second upper end face (2.2) and the second right end face (2.3) are all provided with a spraying area (2.4), and a gap for avoiding the edge chamfer of the inner gear ring raceway (3) of the slewing bearing is arranged between every two adjacent spraying areas (2.4).
6. The inductor of claim 5, wherein: and 4.0-9.0 mm intervals are arranged between the spraying area (2.4) and the first side surface (3.1), the second side surface (3.2) and the third side surface (3.3).
7. The inductor of claim 6, wherein: the distance between the spraying area (2.4) and the first side surface (3.1), the second side surface (3.2) and the third side surface (3.3) is set to be 6.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123063218.6U CN216337795U (en) | 2021-12-08 | 2021-12-08 | Inductor for quenching raceway of inner gear ring of slewing bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123063218.6U CN216337795U (en) | 2021-12-08 | 2021-12-08 | Inductor for quenching raceway of inner gear ring of slewing bearing |
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| CN216337795U true CN216337795U (en) | 2022-04-19 |
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| CN202123063218.6U Active CN216337795U (en) | 2021-12-08 | 2021-12-08 | Inductor for quenching raceway of inner gear ring of slewing bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109903A (en) * | 2022-06-30 | 2022-09-27 | 中国铁建重工集团股份有限公司 | Thin-wall part induction quenching system and machining method |
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2021
- 2021-12-08 CN CN202123063218.6U patent/CN216337795U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109903A (en) * | 2022-06-30 | 2022-09-27 | 中国铁建重工集团股份有限公司 | Thin-wall part induction quenching system and machining method |
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