CN220318629U - Connection structure of slewing bearing seat ring and roof and mining excavator - Google Patents
Connection structure of slewing bearing seat ring and roof and mining excavator Download PDFInfo
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- CN220318629U CN220318629U CN202320950989.7U CN202320950989U CN220318629U CN 220318629 U CN220318629 U CN 220318629U CN 202320950989 U CN202320950989 U CN 202320950989U CN 220318629 U CN220318629 U CN 220318629U
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- seat ring
- ring
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- 238000005065 mining Methods 0.000 title claims abstract description 6
- 230000007704 transition Effects 0.000 claims abstract description 73
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 28
- 238000005242 forging Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a connection structure of a rotary support seat ring and a top plate and a mining excavator, which comprise a circular ring plate, a rotary support seat ring, a top plate, an arc transition plate and a straight-edge transition plate; the top plate, the circular arc transition plate and the straight edge transition plate are connected end to end and fixed together along the outer peripheral surface of the rotary support seat ring, and the circular ring plate is arranged in the inner ring of the rotary support seat ring; the fixed ring plate, the rotary support seat ring, the top plate, the circular arc transition plate and the straight edge transition plate are in a completely symmetrical structure in the left-right front-back direction, and the bottom surfaces of the ring plate, the top plate, the circular arc transition plate and the straight edge transition plate are coplanar with the bottom surface of the rotary support seat ring. The utility model not only can ensure the continuity of the weld joints of the circumference of the rotary support seat ring, but also can mutually correspond to the weld joints of the inner and outer edges of the rotary support seat ring, and simultaneously, the utility model can fully exert the utilization rate of materials, save the manufacturing cost, completely follow the trend of the flowing direction of the stress force, smoothly transit the design and reduce the stress concentration.
Description
Technical Field
The utility model relates to a connecting structure of a rotary support seat ring and a top plate, in particular to a connecting structure of a rotary support seat ring and a top plate for a large-scale mining excavator, and belongs to the field of engineering machinery.
Background
The ultra-large excavator is large in structural size, the chassis frame can reach 4-5 m in length and 3-4 m in width, the connecting structure of the rotary support seat ring and the top plate of the existing chassis frame mainly has two structural forms, one structural form is that the top plate is a whole plate, the middle circumference is machined and welded with the welding seam of the circumference of the rotary support seat ring, the structural form can ensure the welding seam integrity of the rotary support seat ring and the top plate, and the bearing capacity is good, but the traditional structure is that the top plate is a whole plate, the plate material preparation size is large, the material preparation is difficult, the number of plates for the large structural size is small in a steel plate factory, the price is high, the production period is long, the material utilization rate is extremely low, and the structure is quite unsuitable.
Another structural form of the existing product is that the top plate is divided into four small plates to be welded with the rotary support seat ring, the structural form can effectively avoid the disadvantage that the plate material is low in utilization, but the greatest disadvantage of the structural form is that the peripheral continuity of the welding seam between the rotary support seat ring and the top plate cannot be perfectly ensured, the welding seam on two sides is terminated, the arc-starting and arc-receiving welding seam at a plurality of positions cannot be ensured, the terminal quality of the welding seam cannot be ensured, and the strength of the welding seam is not high.
Through product design optimization, the novel connecting structure of the top plate and the rotary support seat ring is developed, the top plate is divided into eight parts for connection, reasonable utilization of materials can be guaranteed, continuity of welding seams of the periphery of the rotary support seat ring can be guaranteed, annealing heat treatment is carried out after integral welding of the product is finished, residual stress of the welding seams is eliminated, and structural strength of the welding seams of the product is guaranteed.
Disclosure of Invention
The utility model provides a connecting structure of a rotary support seat ring and a top plate, which can effectively ensure the welding line of the rotary support seat ring and simultaneously ensure the highest utilization rate of materials, and is efficient and reliable.
In order to achieve the above purpose, the present utility model is realized according to the following technical scheme:
in a first aspect, the utility model discloses a connection structure of a rotary support seat ring and a top plate, which comprises a ring plate, a rotary support seat ring, a top plate, an arc transition plate and a straight-edge transition plate; the top plate, the circular arc transition plate and the straight edge transition plate are connected end to end and fixed together along the outer peripheral surface of the rotary support seat ring, and the circular ring plate is arranged in the inner ring of the rotary support seat ring; the fixed ring plate, the rotary support seat ring, the top plate, the circular arc transition plate and the straight edge transition plate are in a completely symmetrical structure in the left-right front-back direction, and the bottom surfaces of the ring plate, the top plate, the circular arc transition plate and the straight edge transition plate are coplanar with the bottom surface of the rotary support seat ring.
In some embodiments, the welding of the top plate, the circular arc transition plate and the straight edge transition plate are all welded with the same width.
In some embodiments, the number of the top plates is four, the four top plates are fixed on the outer peripheral surface of the slewing bearing seat ring in a mode of being symmetrical in the front-back and left-right directions, and a gap is reserved between two adjacent top plates.
In some embodiments, a circular arc transition plate is disposed in each of the gaps between the two top plates on the front and rear sides of the slewing bearing race, and the width of the top plates extending outward from the front and rear sides is gradually reduced until the width is reduced to be equivalent to the width of the circular arc transition plate.
In some embodiments, a straight edge transition plate is disposed in each of the gaps between the two top plates on the left and right sides of the slewing bearing race, and the width of the top plates extending outward from the left and right sides is gradually reduced until the width of the top plates is reduced to be equivalent to the width of the straight edge transition plate.
In some embodiments, the straight edge transition plate forms a circular arc groove structure with the outer side surfaces of the top plates at two sides.
In some embodiments, the top plate is a profiled plate, and the outer contour of the top plate is composed of a long circular arc-shaped surface, a short circular arc-shaped surface, and a long straight surface and a short straight surface which are connected at right angles, wherein the long circular arc-shaped surface is bonded and welded with the outer peripheral surface of the rotary support seat ring.
In some embodiments, the rotary support race is a ring forging, the inner ring of the rotary support race is cylindrical, the annular plate is welded to the inner ring periphery of the rotary support race, and the plate thickness of the annular plate is equal to the plate thickness of the top plate.
In some embodiments, the outer ring circumferential weld formed by the top plate, the circular arc transition plate and the straight edge transition plate and the rotary support seat ring corresponds to the inner ring circumferential weld formed by the circular ring plate and the rotary support seat ring.
In a first aspect, the utility model discloses a mining excavator, wherein the connecting structure of the slewing bearing seat ring and the top plate is installed.
The utility model has the beneficial effects that:
the utility model not only can ensure the continuity of the weld joints of the circumference of the rotary support seat ring, but also can mutually correspond to the weld joints of the inner and outer edges of the rotary support seat ring, and simultaneously, the utility model can fully exert the utilization rate of materials, save the manufacturing cost, completely follow the trend of the flowing direction of the stress force, smoothly transit the design and reduce the stress concentration. Is a very optimized and efficient design scheme and is worth popularizing.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.
In the drawings:
FIG. 1 is a schematic view of a connection between a slewing bearing race and a top plate of the present utility model;
FIG. 2 is a schematic rear view of a rotary support race and top plate connection of the present utility model;
fig. 3 is an exploded view of the structure of the rotary support race and top plate connection of the present utility model.
The attached drawings are identified: 1. the device comprises a top plate, 2 arc transition plates, 3 straight-edge transition plates, 4 arc groove structures, 5 rotary support seat rings, 6 and a circular plate.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, 2 and 3, the connecting structure of the rotary support seat ring and the top plate comprises a circular ring plate 6, a rotary support seat ring 5, the top plate 1, an arc transition plate 2 and a straight-edge transition plate 3; the top plate 1, the circular arc transition plate 2 and the straight edge transition plate 3 are welded together along the outer peripheral surface of the rotary support seat ring 5 in an end-to-end mode, the annular plate 6 is welded in the inner ring of the rotary support seat ring 5, and the welding seam is a continuous circumferential welding seam; the welded circular ring plate 6, the rotary support seat ring 5, the top plate 1, the circular arc transition plate 2 and the straight edge transition plate 3 are of a completely symmetrical structure in the left-right front-back direction, and the bottom surfaces of the circular ring plate 6, the top plate 1, the circular arc transition plate 2 and the straight edge transition plate 3 are coplanar with the bottom surface of the rotary support seat ring 5.
The further scheme is as follows: the welding of the top plate 1, the circular arc transition plate 2 and the straight edge transition plate 3 is changed into the welding with the same width, the trend of force flow is met, the design of gentle transition is realized, and the stress concentration is reduced.
The further scheme is as follows: the number of the top plates 1 is four, the four top plates 1 are fixed on the outer peripheral surface of the rotary support seat ring 5 in a mode of being symmetrical in the front-back and left-right directions, and a gap is reserved between two adjacent top plates 1.
The further scheme is as follows: a circular arc transition plate 2 is arranged in each of the gaps between the two top plates 1 located on the front and rear sides of the slewing bearing race 5, and the front and rear overhanging width of the top plates 1 is gradually reduced until it is reduced to be equivalent to the width of the circular arc transition plate 2.
The arc transition plate 2 and the slewing bearing race 5 are welded to each other at a K-shaped split, and are welded to the top plate 1 at a V-shaped symmetrical split.
The further scheme is as follows: a straight-sided transition plate 3 is disposed in each of the gaps between the two top plates 1 located on the left and right sides of the slewing bearing race 5, and the width of the top plates 1 extending outward from the left and right sides is gradually reduced until it is reduced to be equivalent to the width of the straight-sided transition plate 3.
The straight-edge transition plate 3 and the rotary support seat ring 5 form K-shaped split welding and form V-shaped symmetrical split welding with the top plate 1; and the straight-side transition plate 3 and the outer side surfaces of the top plates 1 at the two sides form a circular arc-shaped groove structure 4.
The further scheme is as follows: the top plate 1 is a special-shaped plate, and the outer contour of the top plate consists of a long arc-shaped surface, a short arc-shaped surface, a long straight surface and a short straight surface which are connected at right angles, wherein the long arc-shaped surface is bonded and welded with the outer peripheral surface of the rotary support seat ring 5.
The further scheme is as follows: the rotary support seat ring 5 is an annular forging piece and is integrally forged, the inner ring of the rotary support seat ring 5 is cylindrical, the annular plate 6 is welded with the inner ring periphery of the rotary support seat ring 5, and the plate thickness of the annular plate 6 is equal to the plate thickness of the top plate 1.
The further scheme is as follows: the outer ring circumferential weld joint formed by the top plate 1, the circular arc transition plate 2, the straight edge transition plate 3 and the rotary support seat ring 5 corresponds to the inner ring circumferential weld joint formed by the circular ring plate 6 and the rotary support seat ring 5.
With continued reference to fig. 1, 2 and 3, the top plate 1 (four pieces in total), the arc transition plates 2 (two pieces in total) at the front and back positions and the straight-edge transition plates 3 (two pieces in total) at the left and right positions are welded in advance, the top plate 1 and the top plate 1 are respectively connected with the straight-edge transition plates 3 through the arc transition plates 2, and the connection mode adopts vertical V-shaped symmetrical split welding and polishing to be smooth and flat.
After the top plate 1 (two pieces in total) is welded with the arc transition plates 2 (two pieces in total) at the front and back positions and the straight edge transition plates 3 (two pieces in total) at the left and right positions and polished, splicing the whole welding with the rotary support seat ring 5, splicing the annular plate 6 with the inner ring of the rotary support seat ring 5, ensuring that the top plate 1, the arc transition plates 2, the straight edge transition plates 3 and the inner annular plate 6 are coplanar with the back surface of the rotary support seat ring 5, and adopting multi-layer multi-pass welding to weld the top plate 1 with the K-shaped split seam of the periphery of the rotary support seat ring 5 after splicing. The welding mode of the top plate 1 and the rotary support seat ring 5 can effectively ensure the continuity of welding lines between the rotary support seat ring 5 and the top plate 1, the inner ring connecting plate and the outer ring connecting plate of the rotary support seat ring 5 correspond to each other, the integral strength of the structure is ensured, the optimal utilization rate of plates can be exerted, and the production and manufacturing cost is reduced.
In summary, the utility model can realize the best performance by applying an optimized mode, realizes the connection of the top plate and the slewing bearing seat ring by utilizing the maximum utilization rate of the plate, can ensure the continuity and the integrity of the welding seam of the peripheral ring of the slewing bearing seat ring, avoids the welding seam crack caused by the welding seam defect, and is a very practical and efficient connection structure, thereby being worthy of popularization.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features contained in other embodiments, but not others, combinations of features of different embodiments are equally meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the above embodiments in combination according to known technical solutions and technical problems to be solved by the present application.
The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present utility model without departing from the scope of the utility model.
Claims (10)
1. The utility model provides a connection structure of gyration support seat circle and roof which characterized in that:
the device comprises a circular ring plate, a rotary support seat ring, a top plate, an arc transition plate and a straight-edge transition plate;
the top plate, the circular arc transition plate and the straight edge transition plate are connected end to end and fixed together along the outer peripheral surface of the rotary support seat ring, and the circular ring plate is arranged in the inner ring of the rotary support seat ring;
the fixed ring plate, the rotary support seat ring, the top plate, the circular arc transition plate and the straight edge transition plate are in a completely symmetrical structure in the left-right front-back direction, and the bottom surfaces of the ring plate, the top plate, the circular arc transition plate and the straight edge transition plate are coplanar with the bottom surface of the rotary support seat ring.
2. The structure for connecting a slewing bearing race to a top plate as set forth in claim 1, wherein: and the welding of the top plate, the circular arc transition plate and the straight edge transition plate is performed by transition to the same width.
3. The structure for connecting a slewing bearing race to a top plate as set forth in claim 1, wherein: the number of the top plates is four, the four top plates are fixed on the outer peripheral surface of the rotary support seat ring in a mode of being symmetrical in the front-back and left-right directions, and a gap is reserved between two adjacent top plates.
4. A rotary support race and roof connection structure according to claim 3, wherein: a circular arc transition plate is arranged in a gap between the two top plates positioned on the front side and the rear side of the rotary support seat ring, and the front-rear side overhanging width of the top plates is gradually reduced until the width of the top plates is reduced to be equivalent to the width of the circular arc transition plate.
5. A rotary support race and roof connection structure according to claim 3, wherein: a straight-edge transition plate is arranged in a gap between the two top plates positioned on the left side and the right side of the rotary support seat ring, and the left-right overhanging width of the top plates is gradually reduced until the width of the top plates is reduced to be equivalent to that of the straight-edge transition plate.
6. The structure for connecting a slewing bearing race to a top plate as set forth in claim 5, wherein: the straight-side transition plate and the outer side surfaces of the top plates at two sides form a circular arc-shaped groove structure.
7. The structure for connecting a slewing bearing race to a top plate as set forth in claim 1, wherein: the top plate is a special-shaped plate, the outline of the top plate consists of a long circular arc-shaped surface, a short circular arc-shaped surface, a long straight-running surface and a short straight-running surface which are connected at right angles, and the long circular arc-shaped surface is bonded and welded with the outer peripheral surface of the rotary support seat ring.
8. The structure for connecting a slewing bearing race to a top plate as set forth in claim 1, wherein: the rotary support seat ring is formed by forging an annular forging piece integrally, the inner ring of the rotary support seat ring is cylindrical, the annular plate is welded with the inner ring periphery of the rotary support seat ring, and the plate thickness of the annular plate is equal to the plate thickness of the top plate.
9. The structure for connecting a slewing bearing race to a top plate as set forth in claim 8, wherein: the outer ring circumferential weld joint formed by the top plate, the circular arc transition plate and the straight edge transition plate and the rotary support seat ring corresponds to the inner ring circumferential weld joint formed by the circular ring plate and the rotary support seat ring.
10. A mining excavator, characterized in that:
a connection structure of a slewing bearing race and a top plate as claimed in any one of claims 1 to 9 is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320950989.7U CN220318629U (en) | 2023-04-25 | 2023-04-25 | Connection structure of slewing bearing seat ring and roof and mining excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320950989.7U CN220318629U (en) | 2023-04-25 | 2023-04-25 | Connection structure of slewing bearing seat ring and roof and mining excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220318629U true CN220318629U (en) | 2024-01-09 |
Family
ID=89425999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320950989.7U Active CN220318629U (en) | 2023-04-25 | 2023-04-25 | Connection structure of slewing bearing seat ring and roof and mining excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220318629U (en) |
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2023
- 2023-04-25 CN CN202320950989.7U patent/CN220318629U/en active Active
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