CN220785957U - Riding wheel for excavator - Google Patents
Riding wheel for excavator Download PDFInfo
- Publication number
- CN220785957U CN220785957U CN202321678554.8U CN202321678554U CN220785957U CN 220785957 U CN220785957 U CN 220785957U CN 202321678554 U CN202321678554 U CN 202321678554U CN 220785957 U CN220785957 U CN 220785957U
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- Prior art keywords
- wheel
- connecting sleeve
- shaft
- bearings
- riding wheel
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Links
- 238000007667 floating Methods 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 21
- 238000005452 bending Methods 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Pivots And Pivotal Connections (AREA)
Abstract
Riding wheel for excavator relates to riding wheel technical field, and technical scheme is: the connecting sleeve is internally provided with a connecting shaft in a penetrating way, two ends of the connecting shaft are provided with wheel bodies, and the wheel bodies are positioned on two sides of the connecting sleeve. The beneficial effects of this technical scheme are: through the cooperation between stop collar and two wheels body, the stop collar supports fixedly the middle part of connecting axle, and two wheels body atress, two bearing structure promptly, two bearing structure have improved the stress state of axle, have promoted bending resistance, shearing resistance and shock resistance, fatigue resistance of axle, change into both sides floating seal by unilateral floating seal simultaneously, and sealed shock resistance is stronger, and operating mode adaptability is better. In a word, the stability, the reliability of riding wheel have been promoted by a wide margin to two bearing structures.
Description
Technical Field
The utility model relates to the technical field of riding wheels, in particular to a riding wheel for a digging machine.
Background
The riding wheel is an important component part in the chassis of the crawler engineering machinery, and is used for realizing the running of the whole machine together with the crawler, the guide wheel, the supporting wheel, the driving wheel and the tensioning device, and the riding wheel consists of a riding wheel seat, a wheel body, a shaft sleeve (or a bearing), a sealing component, a cover and other related parts. The inside of the riding wheel is provided with liquid lubricating oil, and an oil film is formed between the shaft sleeve and the shaft mainly when the wheel body rotates, so that the lubrication and bearing functions are realized.
The stress state of the conventional riding wheel in the use process is similar to that of a cantilever beam, as shown in fig. 1, and along with the continuous severe use working conditions of the excavator, particularly mines, sand stones, garbage yards, construction sites and the like, the impact resistance requirement and the sealing performance requirement on the riding wheel are continuously improved, the riding wheel in use is limited by a cantilever structure, the length of the cantilever is long, and the quality problems of bent axle, broken axle, oil leakage, shaft and wheel body falling from a seat and the like often occur. In order to solve the problems of bent shaft and broken shaft in the using process, in the currently commonly adopted improvement method, firstly, the shaft diameter is increased, the floating seal specification is required to be increased when the shaft diameter is increased, and the shaft sleeve size is changed; secondly, the lifting shaft is made of high-quality and high-strength materials, so that the hardness of the substrate is improved.
To increasing the diameter of axle technical scheme, on the one hand can increase more cost, on the other hand can weaken wheel body intensity, moreover, to optical axis structure riding wheel, still need change the platform truck and connect the size, lead to the product commonality to become poor, be unfavorable for maintaining and solve the aftermarket problem. The material of the lifting shaft can increase the cost, and the problems of oil leakage and the problem that the shaft and the wheel body are separated from the supporting wheel seat are difficult to solve.
Disclosure of Invention
The utility model aims to solve the problems that a connecting shaft is unstable in stress, easy to break, easy to leak oil and the like when the conventional riding wheel is used.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the riding wheel for the excavator comprises a connecting sleeve, a connecting shaft is arranged in the connecting sleeve in a penetrating mode, wheel bodies are arranged at two ends of the connecting shaft, and the wheel bodies are located at two sides of the connecting sleeve.
The middle part of connecting axle adopts the adapter sleeve to support, and two wheel bodies atress can guarantee that two wheel bodies atress are even, can thoroughly solve the bending of riding wheel axle, fracture scheduling problem, promotes product reliability.
Preferably, sealing positions are respectively arranged at two ends of the connecting sleeve, two bearings are mounted on the connecting shaft, outer rings of the two bearings are connected with the inner wall of the connecting sleeve in a matched mode, sealing pieces are arranged in the two sealing positions, and the two sealing pieces are respectively located at the end faces, close to the wheel bodies at two sides, of the two bearings.
The two ends are adopted for floating sealing, and certain axial force from the wheel body is born through the bearing, so that the sealing stability is better.
Preferably, the middle part of the inner wall of the connecting sleeve is provided with an annular bulge, the outer ring side end surfaces of the two bearings are respectively abutted with the two side surfaces of the annular bulge, the middle part of the connecting shaft is provided with a shaft shoulder, and the inner ring side end surfaces of the two bearings are respectively abutted with the two side surfaces of the shaft shoulder.
The annular bulge limits the two bearings, and simultaneously, the shaft shoulder is adopted to avoid inward extrusion of the two wheel bodies during working.
Preferably, the seal is a floating oil seal.
Preferably, the bearing is a thrust bearing.
The sliding friction is changed into rolling friction, so that the floating seal failure risk caused by abnormal abrasion between the connecting shaft and the shaft sleeve is reduced.
Preferably, the side wall of the connecting sleeve is provided with an oil filling hole.
Preferably, the lower part of the connecting sleeve is fixed with a bracket.
Compared with the prior art, the utility model has the beneficial effects that: through the cooperation between stop collar and two wheels body, the stop collar supports fixedly the middle part of connecting axle, and two wheels body atress is two bearing structure promptly. The double-support structure improves the stress state of the shaft, and improves the bending resistance, shearing resistance and impact resistance and fatigue resistance of the shaft. Meanwhile, the single-side floating seal is changed into the two-side floating seal, so that the sealing shock resistance is stronger and the working condition adaptability is better. In a word, the stability, the reliability of riding wheel have been promoted by a wide margin to two bearing structures.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art connecting shaft and wheel connection
Fig. 2 is a schematic structural view of an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a stop collar according to an embodiment of the present utility model.
In the figure: 1 connecting shaft, 2 supporting wheel frame, 3 shaft shoulder, 4 bearing, 5 sealing element, 6 wheel body, 7 connecting sleeve, 8 oil filler point.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.
Referring to fig. 2-3, a riding wheel for a digging machine comprises a connecting sleeve 7, a connecting shaft 1 is arranged in the connecting sleeve 7 in a penetrating manner, the connecting sleeve 7 supports the middle part of the connecting shaft 1, wheel bodies 6 are arranged at two ends of the connecting shaft 1, the wheel bodies 6 are positioned at two sides of the connecting sleeve 7, the two wheel bodies 6 are stressed, namely, a double-support structure improves the stress state of the shaft, the bending resistance, the shearing resistance and the impact resistance of the shaft are improved, an oil filling hole 8 is arranged on the side wall of the connecting sleeve 7, a wheel supporting frame 2 is fixed at the lower part of the connecting sleeve 7, and the wheel supporting frame 2 supports the connecting sleeve 7.
Referring to fig. 2-3, sealing positions are respectively arranged at two ends of the connecting sleeve 7, two bearings 4 are installed on the connecting shaft 1, the bearings 4 are rolling bearings, sliding friction is changed into rolling friction, the risk of floating seal failure caused by abnormal abrasion between the connecting shaft 1 and the shaft sleeve is reduced, the rolling bearings are pressed between the connecting shaft 1 and the connecting sleeve 7 in an interference mode, two side supporting wheel bodies 6 are pressed in a certain position on the connecting shaft in an interference mode through a tool, axial positioning is further guaranteed, outer rings of the two bearings 4 are connected with the inner wall of the connecting sleeve 7 in a matched mode, sealing pieces 5 are arranged in the two sealing positions, the two sealing pieces 5 are respectively located at the positions, close to the end faces of the two side wheel bodies 6, of the two bearings 4, floating oil seals 5 are arranged between the bearings 4 and the wheel bodies 6, two ends are adopted for floating sealing, certain axial force from the wheel bodies 6 is borne through the rolling bearings, sealing stability is better, annular protrusions are arranged in the middle of the inner wall of the connecting sleeve 7, the annular protrusions limit the two bearings 4, the side end faces of the outer rings of the two bearings 4 are respectively abutted to the two side faces of the annular protrusions, shaft shoulders 3 are arranged in the middle of the connecting shaft 1, the inner ring side end faces of the two bearings 4 are respectively abutted to the two side faces of the annular protrusions 3, and the two side faces of the two bearings 4 are respectively abutted to the two side faces of the shaft shoulders 3, and the two bearings 6 are prevented from being pressed normally.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The riding wheel for the excavator comprises a connecting sleeve (7), and is characterized in that: a connecting shaft (1) is arranged in the connecting sleeve (7) in a penetrating way, two ends of the connecting shaft (1) are provided with wheel bodies (6), and the wheel bodies (6) are positioned at two sides of the connecting sleeve (7); sealing positions are respectively arranged at two ends of the connecting sleeve (7), two bearings (4) are arranged on the connecting shaft (1), outer rings of the two bearings (4) are connected with the inner wall of the connecting sleeve (7) in a matched mode, sealing pieces (5) are arranged in the two sealing positions, and the two sealing pieces (5) are respectively positioned at the end faces, close to the wheel bodies (6) at two sides, of the two bearings (4); the middle part of the inner wall of the connecting sleeve (7) is provided with an annular bulge, the outer ring side end surfaces of the two bearings (4) are respectively abutted with the two side surfaces of the annular bulge, the middle part of the connecting shaft (1) is provided with a shaft shoulder (3), and the inner ring side end surfaces of the two bearings (4) are respectively abutted with the two side surfaces of the shaft shoulder (3); the bearing (4) is a thrust bearing; the wheel body (6) is pressed into the connecting shaft (1) in an interference manner.
2. The riding wheel for a excavator according to claim 1, wherein: the sealing piece (5) is a floating oil seal.
3. The riding wheel for a excavator according to claim 1, wherein: the side wall of the connecting sleeve (7) is provided with an oil filling hole (8).
4. The riding wheel for a excavator according to claim 1, wherein: the lower part of the connecting sleeve (7) is fixed with a bracket (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321678554.8U CN220785957U (en) | 2023-06-29 | 2023-06-29 | Riding wheel for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321678554.8U CN220785957U (en) | 2023-06-29 | 2023-06-29 | Riding wheel for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220785957U true CN220785957U (en) | 2024-04-16 |
Family
ID=90634816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321678554.8U Active CN220785957U (en) | 2023-06-29 | 2023-06-29 | Riding wheel for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220785957U (en) |
-
2023
- 2023-06-29 CN CN202321678554.8U patent/CN220785957U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |