CN219325693U - Wheel assembly - Google Patents
Wheel assembly Download PDFInfo
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- CN219325693U CN219325693U CN202320119641.3U CN202320119641U CN219325693U CN 219325693 U CN219325693 U CN 219325693U CN 202320119641 U CN202320119641 U CN 202320119641U CN 219325693 U CN219325693 U CN 219325693U
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- shaft
- shaft sleeve
- wheel
- wheel assembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The application discloses a wheel assembly, which comprises a wheel shaft and two wheels rotatably and respectively arranged at two ends of the wheel shaft, wherein each wheel comprises a shaft sleeve and a rim sleeved outside the shaft sleeve, the wheel shaft is provided with a middle section, and two ends of the middle section in the axial direction are integrally provided with a connecting part; the two connecting parts are respectively inserted into the shaft sleeve of a wheel, each connecting part is sleeved with two bearings, a space between the two bearings forms a lubricating cavity, and lubricating grease is filled in the lubricating cavity; an oil inlet is formed in the area, corresponding to the lubrication cavity, of the shaft sleeve, the oil inlet is communicated with the inside and the outside of the lubrication cavity, and lubricating grease can be filled into the lubrication cavity through the oil inlet. In this application, adopted the design of double round, improved the bearing capacity of shaft sub-assembly, the inlet port sets up between first bearing and second bearing, and the lubricating intracavity lubricating grease fills and balanced for the life of bearing tends to unanimously.
Description
Technical Field
The present utility model relates to a wheel assembly.
Background
The freight vehicles such as wharf container vehicles, flat vehicles, low-speed load vehicles and the like have large load capacity, smaller range and lower running speed, and the lubricating performance of the bearing between the wheels and the wheel shafts is required to be detached and ensured so as to reduce the friction coefficient of the bearing, prolong the service life of the bearing and reduce the maintenance cost. At present, a large amount of wheel bearings of a load-carrying vehicle adopt a double-bearing structure, because of the limitation of a radial plate, oiling holes for adding lubricating grease are all arranged on the outer sides of the bearings, the added lubricating grease can reach the other bearing through one of the bearings, the lubricating grease supply of the bearing far away from the oiling holes is influenced, the abrasion of the bearing far away from the oiling holes is more serious, the abrasion degrees of the two bearings are different, but when the bearings are replaced, the two bearings are required to be replaced simultaneously, and the maintenance cost of the vehicle is increased.
Disclosure of Invention
In order to solve the above problems, the present utility model provides a wheel assembly, which comprises a wheel axle and two wheels rotatably mounted at two ends of the wheel axle, wherein each wheel comprises a shaft sleeve and a rim sleeved outside the shaft sleeve, the shaft sleeve and the rim are coaxially arranged and radially spaced, and the rim is connected to the shaft sleeve through a web; the axial direction two ends of the shaft sleeve are respectively formed into a first end part and a second end part, and a first hole shoulder and a second hole shoulder are formed on the inner peripheral surface of the shaft sleeve, wherein the first hole shoulder faces the first end part, and the second hole shoulder faces the second end part;
the axle is provided with a middle section, two ends of the middle section in the axial direction are integrally provided with connecting parts, each connecting part comprises an inner axle journal, an intermediate neck part and an outer axle journal which are sequentially connected into a whole, wherein the inner axle journal is positioned at one side of the intermediate neck part facing the middle section, the outer axle journal is positioned at one side of the intermediate neck part facing away from the middle section, and an axle hole is formed in the middle section in the radial direction;
the two connecting parts are respectively inserted into the shaft sleeve of a wheel, the first end part faces to the middle section, the first bearing is sleeved on the inner shaft neck, and the outer ring of the first bearing is abutted against the inner hole shoulder; the second bearing is sleeved on the outer shaft neck, and the outer ring of the second bearing is propped against the outer hole shoulder; a space between the first bearing and the second bearing forms a lubrication cavity in the inner cavity of the shaft sleeve, and lubricating grease is filled in the lubrication cavity; an oil inlet is formed in the area, corresponding to the lubrication cavity, of the shaft sleeve, the oil inlet is communicated with the inside and the outside of the lubrication cavity, and lubricating grease can be filled into the lubrication cavity through the oil inlet.
In this application, adopted the design of two wheels, improved the bearing capacity of shaft sub-assembly, the wheel sub-assembly can be installed on the rear axle compensating beam of gyro wheel frame through epaxial shaft hole, and the load of vehicle can evenly be transmitted on each tire. At present, two tires are abutted together, and as the axle bends under pressure, the outer tire is lifted upwards, the inner tire is subjected to larger pressure, and the service life of the inner tire is relatively short relative to that of the outer tire, so that when the tires are replaced, the two tires are required to be replaced at the same time, and the maintenance cost of the vehicle is increased. In this application, the load point of vehicle is located between two tires for the pressure that two tires received is the same, and its life tends to be unanimous, is favorable to reducing the maintenance cost of vehicle.
In this application, with the inlet port setting between first bearing and second bearing, the lubricating grease of lubrication intracavity fills and balanced, and two bearings department can be reached uniformly to the fresh lubricating grease of replenishment, and the quality of the used lubricating grease of two bearings is the same, and good lubricating property can all be guaranteed for the life trend of two bearings is unanimous.
Specifically, in order to ensure the strength of the wheel, two webs are arranged between the shaft sleeve and the rim of the same wheel, the two webs are arranged at intervals along the axial direction, the oil inlet hole is positioned between the two webs of the same wheel in the axial direction, and one end of the oil inlet pipe penetrates through one web and is connected to the oil inlet hole in a sealing manner. The design also allows for convenient replenishment of grease into the lubrication chamber.
Further, in order to uniformly supply fresh grease to the first bearing and the second bearing, the oil inlet hole is located at an intermediate position between the first bearing and the second bearing of the same wheel in the axial direction.
Specifically, the outer peripheral surface of the rim is a smooth cylindrical surface, and no rim is arranged on two sides of the rim in the axial direction. After the flange is removed, when the tire is pressed and deformed, the tire can be freely expanded outwards, the tire can not be sheared by the flange, and the service life of the tire is prolonged. Since the vehicles installed with the present application are all slow vehicles, the speed of the vehicle is generally not more than 10km/h, the elimination of the flange does not cause the tire to disengage from the rim after prolonged use. In this application, adopt whole interference pressure formula to install the tire, guaranteed the zonulae occludens between tire and the rim.
Further, in order to facilitate the installation and positioning of the webs, after the middle part of the outer peripheral surface of the shaft sleeve protrudes outwards in the radial direction, an annular outer boss is formed, two ends of the outer boss in the axial direction are respectively provided with a limiting step surface, and two webs of the same wheel are respectively pressed against one limiting step surface. The spacing step surface is utilized, so that the distance between two webs of each wheel is the same, and the quality uniformity of each wheel is ensured.
Further, a shaft shoulder is formed between each inner shaft neck and the middle section, one end of each outer shaft neck away from the middle section is formed into a shaft head, the outer ring of the first bearing is propped against the shaft shoulder through a steel sealing ring, and an O-shaped rubber ring is arranged between the steel sealing ring and the outer ring of the first bearing in a cushioning manner; the locking nut is screwed on the shaft head, the locking nut is propped against the inner ring of the second bearing through a check ring, the outer ring of the second bearing is tightly propped against the outer hole shoulder, and meanwhile, the outer ring of the first bearing is tightly propped against the shaft shoulder through the steel sealing ring. Because the outer ring of the first bearing is tightly pressed on the shaft shoulder through the steel sealing ring to seal the inner side of the lubrication cavity, external dust or foreign matters are prevented from entering the lubricating grease through the first end of the shaft sleeve, and the normal operation of the first bearing is prevented from being influenced. The gap between the steel sealing ring and the outer ring of the first bearing can be effectively sealed by utilizing the fluorosilicone rubber O-shaped ring, so that the inner side tightness of the lubrication cavity is improved.
Further, in order to prevent external dust or foreign matter from entering the grease through the second end of the shaft sleeve and affecting the normal operation of the second bearing, an end cover is mounted on one end of each shaft sleeve, which is away from the other shaft sleeve, and the end cover is mounted on the shaft sleeve in a sealing manner through a paper gasket. The design results in the second end of the sleeve being closed.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present application.
Fig. 2 is a schematic structural view of a wheel.
Fig. 3 is a schematic structural view of the wheel axle.
Detailed Description
Referring to fig. 1-3, a wheel assembly comprises a wheel axle 30 and two wheels 20 rotatably mounted at opposite ends of the wheel axle, each wheel 20 comprising a sleeve 21 and a rim 23 disposed around the sleeve, the sleeve and rim being coaxially disposed and radially spaced apart, the rim 23 being connected to the sleeve 21 via a web 22. The outer circumferential surface 231 of the rim is a smooth cylindrical surface, and no rim is provided on both sides of the rim in the axial direction. The rim in this embodiment is used for installing a solid rubber tire, and the solid rubber tire is installed on the rim by adopting an integral interference press-fit manner.
In this embodiment, two webs 22 are provided between the hub 21 and the rim 23 of the same wheel, the webs being spaced apart in the axial direction. An outer boss is arranged in the middle of the outer peripheral surface of the shaft sleeve, the outer boss is formed by protruding outwards along the radial direction of the outer peripheral surface of the shaft sleeve, two limiting step surfaces 214 are respectively formed at two ends of the outer boss in the axial direction, two radial plates are respectively sleeved on the shaft sleeve from two ends of the shaft sleeve, and the radial inner end of each radial plate is propped against one limiting step surface 214. The radial outer end of the web is welded on the inner peripheral surface of the rim, and the radial inner end of the web is welded on the outer peripheral surface of the shaft sleeve.
The axial ends of the sleeve are formed as a first end 216 and a second end 217, respectively, on the inner peripheral surface of which there is an inner boss 218 protruding radially inward, and in the inner cavity of the sleeve, opposite sides of the inner boss 218 are formed as a first bearing cavity 41 and a second bearing cavity 42, respectively, with the first bearing cavity 41 facing the first end and the second bearing cavity 42 facing the second end.
An inner bore shoulder 211 is formed between the first bearing cavity 41 and the inner boss 218, and an outer bore shoulder 212 is formed between the second bearing cavity 42 and the inner boss such that the first bore shoulder faces the first end and the second bore shoulder faces the second end. The inner hole shoulder 211 and the outer hole shoulder 212 are both stepped surfaces.
The wheel axle 30 has a middle section 31, and a connecting portion 32 is integrally formed at both ends of the middle section 31 in the axial direction, and each connecting portion 32 includes an inner journal 321, an intermediate journal portion 322, and an outer journal 323 which are sequentially connected as one body, wherein the inner journal 321 is located at a side of the intermediate journal portion 322 facing the middle section 31, and the outer journal 323 is located at a side of the intermediate journal portion 322 facing away from the middle section 31. A shaft hole 39 is radially formed in the intermediate section 31. A shoulder 311 is formed between each inner journal 321 and the intermediate portion 31, a shaft head 34 is formed at an end of each outer journal 323 facing away from the intermediate portion 31, and an external thread 341 and a pin hole 35 penetrating through an outer circumferential surface of the shaft head in a radial direction of the shaft head are provided on the shaft head.
The two connecting parts 32 are respectively inserted into the shaft sleeve 21 of a wheel, the first end part faces to the middle section, the first bearing 1 is sleeved on the inner shaft neck 321, the first bearing 1 stretches into the first bearing cavity 41, one side, facing to the middle section, of the outer ring of the first bearing is pressed against the shaft shoulder 311 through a steel sealing ring 3, an O-shaped rubber ring 4 is arranged between the steel sealing ring 3 and the outer ring of the first bearing in a cushioning mode, and in the embodiment, the O-shaped rubber ring is made of fluorine-silicon materials so as to ensure the tightness between the outer ring of the first bearing and the steel sealing ring. The steel sealing ring 3 is produced by adopting Q345B steel. In this embodiment, after the end of the first bearing cavity 41 facing the middle portion expands radially outwards, a gasket cavity 43 is formed, and an abutment surface 215 is formed on a step surface between the gasket cavity and the first bearing cavity 41, and the steel seal ring 3 extends into the gasket cavity 43 and abuts against the abutment surface. The outer ring of the first bearing rests on the inner bore shoulder 211 on the side facing away from the intermediate section.
The second bearing 2 is sleeved on the outer shaft neck 323, and the outer ring of the second bearing is pressed against the outer hole shoulder 212. In the inner cavity of the sleeve, a space between the first bearing and the second bearing forms a lubrication chamber 219, and grease is filled in the lubrication chamber 219. An oil inlet 24 is provided in the region of the sleeve 21 corresponding to the lubrication chamber, and communicates with the inside and outside of the lubrication chamber, through which grease can be filled into the lubrication chamber.
In the axial direction, the oil inlet 24 is located between two webs of the same wheel, the two ends of the oil inlet pipe 25 are respectively formed into an oil inlet end 251 and an oil outlet end, the oil outlet end extends into the oil inlet and is welded on the shaft sleeve, so that the oil outlet end is connected to the oil inlet 24 in a sealing manner, and a nozzle 26 is arranged at the oil outlet end, and the oil inlet end extends towards the direction away from the middle section and penetrates the webs away from the middle section. In the axial direction, the oil inlet is positioned at an intermediate position between the first bearing and the second bearing of the same wheel.
The lock nut 11 is screwed on the external thread of the shaft head 34, the retainer ring 13 is positioned between the lock nut 11 and the second bearing, the retainer ring 13 is propped against the inner ring of the second bearing, and the lock nut is screwed tightly, so that the retainer ring 13 can be tightly propped against the inner ring of the second bearing, and the outer ring of the second bearing can be tightly propped against the outer hole shoulder. Under the extrusion of the lock nut, the outer ring of the first bearing is tightly pressed against the shaft shoulder through the steel sealing ring 3.
The end face of one end of each shaft sleeve, which is away from the other shaft sleeve, is provided with a bolt hole 213, the bolt 9 is screwed in the spiral hole 213, the end cover 8 is arranged on the end face of the shaft sleeve, and a paper pad 14 is arranged between the end cover 8 and the end face of the shaft sleeve in a pad mode, so that the end cover is arranged on the shaft sleeve in a sealing mode through the paper pad. In this embodiment, the paper pad 14 is made of coated paper.
Claims (7)
1. The wheel assembly is characterized by comprising a wheel shaft and two wheels which are rotatably and respectively arranged at two ends of the wheel shaft, wherein each wheel comprises a shaft sleeve and a rim sleeved outside the shaft sleeve, the shaft sleeve and the rim are coaxially arranged and radially arranged at intervals, and the rim is connected to the shaft sleeve through a radial plate; the axial direction two ends of the shaft sleeve are respectively formed into a first end part and a second end part, and a first hole shoulder and a second hole shoulder are formed on the inner peripheral surface of the shaft sleeve, wherein the first hole shoulder faces the first end part, and the second hole shoulder faces the second end part;
the axle is provided with a middle section, two ends of the middle section in the axial direction are integrally provided with connecting parts, each connecting part comprises an inner axle journal, an intermediate neck part and an outer axle journal which are sequentially connected into a whole, wherein the inner axle journal is positioned at one side of the intermediate neck part facing the middle section, the outer axle journal is positioned at one side of the intermediate neck part facing away from the middle section, and an axle hole is formed in the middle section in the radial direction;
the two connecting parts are respectively inserted into the shaft sleeve of a wheel, the first end part faces to the middle section, the first bearing is sleeved on the inner shaft neck, and the outer ring of the first bearing is abutted against the inner hole shoulder; the second bearing is sleeved on the outer shaft neck, and the outer ring of the second bearing is propped against the outer hole shoulder; a space between the first bearing and the second bearing forms a lubrication cavity in the inner cavity of the shaft sleeve, and lubricating grease is filled in the lubrication cavity; an oil inlet is formed in the area, corresponding to the lubrication cavity, of the shaft sleeve, the oil inlet is communicated with the inside and the outside of the lubrication cavity, and lubricating grease can be filled into the lubrication cavity through the oil inlet.
2. The wheel assembly of claim 1, wherein the wheel assembly comprises,
two webs are arranged between the shaft sleeve and the rim of the same wheel, the two webs are arranged at intervals along the axial direction, the oil inlet hole is positioned between the two webs of the same wheel in the axial direction, and one end of the oil inlet pipe penetrates through one web and is connected to the oil inlet hole in a sealing mode.
3. The wheel assembly of claim 1, wherein the wheel assembly comprises,
in the axial direction, the oil inlet is positioned at an intermediate position between the first bearing and the second bearing of the same wheel.
4. The wheel assembly of claim 1, wherein the wheel assembly comprises,
the outer peripheral surface of the rim is a smooth cylindrical surface, and no rim is arranged on two sides of the rim in the axial direction.
5. The wheel assembly of claim 1, wherein the wheel assembly comprises,
after the middle part of the outer peripheral surface of the shaft sleeve protrudes outwards in the radial direction, an annular outer boss is formed, two limiting step surfaces are respectively formed at two ends of the outer boss in the axial direction, and two webs of the same wheel are respectively pressed against one limiting step surface.
6. The wheel assembly of claim 1, wherein the wheel assembly comprises,
a shaft shoulder is formed between each inner shaft neck and the middle section, one end of each outer shaft neck away from the middle section is formed into a shaft head, the outer ring of the first bearing is propped against the shaft shoulder through a steel sealing ring, and an O-shaped rubber ring is arranged between the steel sealing ring and the outer ring of the first bearing in a cushioning manner; the locking nut is screwed on the shaft head, the locking nut is propped against the inner ring of the second bearing through a check ring, the outer ring of the second bearing is tightly propped against the outer hole shoulder, and meanwhile, the outer ring of the first bearing is tightly propped against the shaft shoulder through the steel sealing ring.
7. The wheel assembly of claim 1, wherein the wheel assembly comprises,
an end cover is arranged at one end of each shaft sleeve, which is away from the other shaft sleeve, and the end cover is arranged on the shaft sleeve in a sealing way through a paper gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320119641.3U CN219325693U (en) | 2023-01-31 | 2023-01-31 | Wheel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320119641.3U CN219325693U (en) | 2023-01-31 | 2023-01-31 | Wheel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219325693U true CN219325693U (en) | 2023-07-11 |
Family
ID=87063495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320119641.3U Active CN219325693U (en) | 2023-01-31 | 2023-01-31 | Wheel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219325693U (en) |
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2023
- 2023-01-31 CN CN202320119641.3U patent/CN219325693U/en active Active
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