CN216616033U - Slewing bearing fixing seat of spinning structure for small excavator - Google Patents
Slewing bearing fixing seat of spinning structure for small excavator Download PDFInfo
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- CN216616033U CN216616033U CN202220024329.1U CN202220024329U CN216616033U CN 216616033 U CN216616033 U CN 216616033U CN 202220024329 U CN202220024329 U CN 202220024329U CN 216616033 U CN216616033 U CN 216616033U
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- slewing bearing
- bearing fixing
- side ring
- spigot
- spinning structure
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Abstract
The utility model discloses a slewing bearing fixing seat of a spinning structure for a small excavator, which comprises a circular fixing flange and a side ring, wherein the fixing flange and the side ring are arranged concentrically, the fixing flange is arranged at the upper part of the side ring, the fixing flange and the side ring form a slewing body, the fixing flange and the side ring are formed by spinning a steel plate, fixing holes are formed in the periphery of the fixing flange, and the fixing flange is connected with a slewing bearing through the fixing holes. The fixing flange and the side ring are of a rotary body structure formed by spinning one steel plate, the problems of large welding size error and many defects are solved, the structural strength is high, the process is simple, the processing is easy, and the manufacturing cost is low.
Description
Technical Field
The utility model relates to the technical field of mini excavators, in particular to a slewing bearing fixing seat of a spinning structure for a mini excavator.
Background
The small crawler excavator is a widely used mechanical equipment for excavating and excavating earth, an upper excavator body and a lower excavator body of the excavator are connected through a slewing bearing, and the slewing bearing is fixed on a slewing bearing fixing seat, so that the slewing bearing fixing seat is a key part of the excavator. When the excavator works, the constantly changing working load is transmitted to the lower body through the slewing bearing, so that the slewing bearing fixing seat not only bears the gravity and the gravity moment of the upper body and the working part, but also bears the impact reaction force during the operation, and the structural strength and the quality of the slewing bearing fixing seat directly influence the quality and the performance of the excavator.
The slewing bearing fixing seat of the existing small-sized crawler excavator is processed by welding or forging steel plates.
The slewing bearing fixing seat is welded by splicing steel plates, the number of the steel plates for welding is large, the process is complex, the size error after welding is large, large welding stress and a large number of welding defects exist, the quality of the slewing bearing fixing seat is poor, and serious potential safety hazards exist.
The rotary support fixing seat machined by forging is heavy, machining allowance is large, machining positions are multiple, manufacturing cost is high, and cost reduction and efficiency improvement requirements cannot be met.
Disclosure of Invention
The utility model provides a slewing bearing fixing seat of a spinning structure for a small excavator, aiming at the defects in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a slewing bearing fixing base of spinning structure for small-size excavator, includes ring shape mounting flange and side ring, and mounting flange and side ring are concentric setting, and mounting flange sets up on the upper portion of side ring, and mounting flange and side ring constitute a solid of revolution, and mounting flange and side ring pass through spin forming with a steel sheet, and the mounting flange border is equipped with the fixed orifices, and mounting flange passes through the fixed orifices and is connected with slewing bearing.
The fixed flange comprises a spigot, the depth of the spigot is 0-15 mm, preferably 8-12 mm, and the spigot is adopted for accurate positioning.
The spigot is a conical spigot, the taper is 2-8 degrees, preferably 3-6 degrees, the conical spigot is adopted, so that the assembly and disassembly are convenient, and the centering effect is good.
The spigot middle part be equipped with annular oil groove, be equipped with high-pressure oilhole at mounting flange radially, high-pressure oilhole and annular oil groove intercommunication, during the use, let in high-pressure oil in the high-pressure oilhole, high-pressure oil passes through annular oil groove and produces pressure in spigot fitting surface department, makes two fitting pieces appear the clearance, convenient dismantlement.
The angle between the generatrix of the side circular ring and the axis is 5-15 degrees, preferably 8-12 degrees.
The side ring and the fixed flange are in fillet transition, and the fillet radius at the joint of the side ring and the fixed flange is R10 mm-R30 mm, preferably R20 mm-R25 mm.
The lower part of the side circular ring is provided with a fixed seat, so that the fixed seat of the slewing bearing can be conveniently connected and fixed.
The utility model has the beneficial effects that: the fixing flange and the side ring are of a rotary body structure formed by spinning one steel plate, the problems of large welding size error and many defects are solved, the structural strength is high, the process is simple, the processing is easy, and the manufacturing cost is low.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a slewing bearing fixing seat 1 of a spinning structure for a mini excavator in an embodiment of the utility model;
fig. 2 is a schematic top view of a slewing bearing fixing seat 1 of a spinning structure for a mini excavator according to an embodiment of the utility model;
FIG. 3 is a schematic sectional view A-A of FIG. 2;
FIG. 4 is a schematic three-dimensional structure of embodiment 2 of a pivoting support fixing seat of a spinning structure for a mini excavator according to the present invention;
FIG. 5 is a schematic partial cross-sectional view of an embodiment 2 of a slewing bearing fixing base of a spinning structure for a mini-excavator according to the present invention;
in the figure:
1-circular ring-shaped fixed flange, 2-side circular ring, 3-fixed hole, 4-spigot, 5-internal fillet, 6-conical spigot, 7-annular oil groove, 8-high pressure oil hole, 9-fixed seat, H-spigot depth, angle between generatrix of alpha-side circular ring and axis, and taper of beta-conical spigot.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The utility model provides a slewing bearing fixing base of spinning structure for small-size excavator, as shown in fig. 1-3, including ring shape mounting flange 1 and side ring 2, mounting flange 1 and side ring 2 are the concentric setting, mounting flange 1 sets up on the upper portion of side ring 2, a solid of revolution is constituteed with side ring 2 to mounting flange 1, mounting flange 1 passes through spin forming with side ring 2 with a steel sheet, mounting flange 1 periphery is equipped with fixed orifices 3, mounting flange 1 is connected with slewing bearing through fixed orifices 3.
The fixed flange 1 comprises a spigot 4, the spigot depth H is 0 mm-15 mm, preferably 8 mm-12 mm, and the spigot 4 is adopted for accurate positioning.
The angle alpha between the generatrix of the side ring 2 and the axis is 5-15 deg., preferably 8-12 deg..
The side ring 2 and the fixed flange 1 are in fillet transition, and the radius of a fillet 5 at the joint of the side ring and the fixed flange is R10 mm-R30 mm, preferably R20 mm-R25 mm.
Example 2
As shown in fig. 4-5, the spigot 4 of the fixing flange 1 is a tapered spigot 6, the taper beta of the tapered spigot is 2-8 degrees, preferably 3-6 degrees, the tapered spigot 6 is adopted to facilitate the disassembly and assembly, and the centering effect is good.
The middle of the spigot 4 is provided with an annular oil groove 7, a high-pressure oil hole 8 is radially arranged on the fixing flange 1, the high-pressure oil hole 8 is communicated with the annular oil groove 7, and during use, high-pressure oil is introduced into the high-pressure oil hole 8 and generates pressure at the spigot fitting surface through the annular oil groove 7, so that two fitting pieces are in clearance and are convenient to disassemble.
The lower part of the side circular ring 2 is provided with a fixed seat 9, which is convenient for the connection and fixation of the fixed seat of the slewing bearing.
The rest is the same as example 1.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. The utility model provides a slewing bearing fixing base of spinning structure for small-size excavator which characterized in that: including ring shape mounting flange and side ring, mounting flange and side ring are concentric setting, and mounting flange sets up on the upper portion of side ring, and mounting flange and side ring constitute a solid of revolution, and the mounting flange border is equipped with the fixed orifices.
2. The slewing bearing fixing base of a spinning structure for a mini-excavator according to claim 1, wherein: the fixed flange comprises a spigot, and the depth of the spigot is 0-15 mm.
3. The slewing bearing fixing base of a spinning structure for a mini-excavator according to claim 2, wherein: the spigot is a tapered spigot, and the taper is 2-8 degrees.
4. A swing bearing fixing base of a spinning structure for a mini-excavator according to claim 2 or 3, wherein: the middle part of the spigot is provided with an annular oil groove, the fixing flange is radially provided with a high-pressure oil hole, and the high-pressure oil hole is communicated with the annular oil groove.
5. The slewing bearing fixing base of a spinning structure for a mini-excavator according to claim 1, wherein: the angle between the generatrix of the side circular ring and the axis is 5-15 degrees.
6. The slewing bearing fixing base of a spinning structure for a mini-excavator according to claim 1, wherein: the side circular ring and the fixed flange are in fillet transition, and the radius of an inner fillet at the joint of the side circular ring and the fixed flange is R10 mm-R30 mm.
7. The slewing bearing fixing base of a spinning structure for a mini-excavator according to claim 1, wherein: the lower part of the side ring is provided with a fixed seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220024329.1U CN216616033U (en) | 2022-01-07 | 2022-01-07 | Slewing bearing fixing seat of spinning structure for small excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220024329.1U CN216616033U (en) | 2022-01-07 | 2022-01-07 | Slewing bearing fixing seat of spinning structure for small excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216616033U true CN216616033U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220024329.1U Active CN216616033U (en) | 2022-01-07 | 2022-01-07 | Slewing bearing fixing seat of spinning structure for small excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216616033U (en) |
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2022
- 2022-01-07 CN CN202220024329.1U patent/CN216616033U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230414 Address after: 272000 No. 8, Shanbo Road, high tech Zone, Jining City, Shandong Province (in the courtyard of wohua Group Co., Ltd.) Patentee after: Jining Yikang Machinery Co.,Ltd. Address before: 272200 No. 8, Shanbo Road, Jining high tech Zone, Jining City, Shandong Province (in the hospital of wohua Group Co., Ltd.) Patentee before: Jining kaidiwo Heavy Industry Technology Co.,Ltd. |