Anti-corrosion and anti-rust sealing omnidirectional wheel mechanism
Through integrated roller shell, tapered roller bearing assembly and stainless steel material, the corrosion and sealing problems of omnidirectional wheels in marine environments are solved, the rust resistance and service life of omnidirectional wheels are improved, and flexible operation on complex road surfaces is ensured.
Patent Information
- Application Number
- CN202422948108.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The existing omnidirectional wheels have weak corrosion resistance in marine environments, the rollers are prone to rust, have poor sealing properties, and are not flexible when used on convex and concave road surfaces.
The integrated roller shell and tapered roller bearing assembly are used to combine stainless steel material and sealing ring to enhance sealing, and a protective rubber transition is installed between the wheel hubs. The roller bearings and wheel hubs are made using stainless steel materials to increase load-bearing capacity and flexibility.
It improves the rust and corrosion resistance of the omnidirectional wheel, enhances the sealing ability, ensures stable operation in complex environments, and improves service life and flexibility.
Smart Images
Figure CN223290577U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rolling elements, in particular to an anti-corrosion and rust-proof sealed omnidirectional wheel mechanism used in robots, intelligent wheelchairs, intelligent equipment, automation equipment, military industry, aerospace, logistics and other occasions. Background Art
[0002] With the rapid development of modern intelligent and automated equipment, the requirements for mobile wheels and their environmental adaptability are becoming increasingly higher. Omnidirectional wheels have gradually become the first choice for intelligent and automated equipment. However, the existing mainstream omnidirectional wheels have poor adaptability to marine environments and weak corrosion resistance, mainly manifested as follows:
[0003] 1. The single roller has no waterproof seal and is prone to rust due to water or smoke.
[0004] 2. The main materials are mostly ordinary carbon steel with surface spray paint or coating, and the anti-rust ability is limited.
[0005] 3. The roller rotating bearing uses a tapered roller bearing, which has no sealing function and is prone to water ingress and rust.
[0006] 4. There is no transition in the gap between the rollers, which makes it easy to get stuck and inflexible when used on uneven roads. Summary of the Invention
[0007] In order to overcome the deficiencies of the prior art, the purpose of the invention of the utility model is to provide a corrosion-resistant and rust-proof sealed omnidirectional wheel mechanism to improve the overall corrosion resistance, waterproofness and sealing capabilities of the omnidirectional wheel, and enhance its load-bearing capacity and flexibility.
[0008] In order to achieve the above-mentioned purpose of the invention, the roller shell of the roller of the corrosion-proof and rust-proof sealed omnidirectional wheel mechanism of the present invention is equipped with tapered roller bearing assemblies at both ends, the roller shell and the bearing outer ring of the tapered roller bearing assembly installed at both ends of the roller shaft are an integrated structure, the roller shaft is fixed in the mounting hole of the wheel hub by a flat-end set screw, the outer end of the bearing inner ring of the tapered roller bearing assembly extends out of the roller shell in the axial direction, lip sealing rings are installed between the two ends of the roller shell and the bearing inner ring of the tapered roller bearing assembly, the elastic retaining ring is installed on the outside of the lip sealing ring, O-type sealing rings are installed between the two ends of the roller shaft and the bearing inner ring of the tapered roller bearing assembly, a roller rubber sleeve is inlaid on the outside of the roller shell, a deep groove ball bearing is installed in the middle inner hole of the wheel hub, and the protective rubber is fixedly connected to the wheel hub by screw one, screw two and a nut.
[0009] Furthermore, the protective rubber is fixed on the hub between the two rollers.
[0010] Furthermore, the rollers are arranged in multiple groups in double arrangement, and the rollers in each group are evenly distributed 360° around the circumference.
[0011] Furthermore, the deep groove ball bearing and the center hole of the wheel hub are interference fit.
[0012] Furthermore, the wheel hub is cast from stainless steel, the roller shaft and roller shell are made of 9Cr18 material, and the tapered roller bearing assembly and deep groove ball bearing are made of stainless steel.
[0013] Compared with the existing technology, the omnidirectional wheel of the utility model is mainly used in robots, intelligent wheelchairs, intelligent equipment, automation equipment, military industry, aerospace, logistics handling, shipping and other occasions. It can be used in various complex environments and road surfaces, and its service life is greatly improved. It has the following advantages:
[0014] 1. By adopting an integrated structure in which the roller shell and the outer ring of the tapered roller bearing assembly are integrated, the wall thickness of the roller is effectively increased, and the load-bearing capacity of the roller and the bearing is also improved.
[0015] 2. The inner ring main part of the tapered roller bearing assembly is lengthened. The lengthened bearing inner ring can facilitate the installation of a lip seal ring between the bearing inner ring and the roller shell. It can also prevent the end face of the roller bearing outer ring from contacting the wheel hub and causing friction and jamming, making it flexible to use.
[0016] 3. Installing a protective rubber transition at the installation transition position between the two rollers of the wheel hub can prevent the omnidirectional wheel hub from directly contacting the uneven ground and getting stuck during use.
[0017] 4. The O-ring and lip-shaped sealing ring can prevent water, steam, dust, impurities, etc. from entering the interior of the roller and causing rust and corrosion, thereby improving the overall sealing ability of the omnidirectional wheel.
[0018] 5. The roller rubber sleeve can provide corresponding soft contact between the omnidirectional wheel and the road surface.
[0019] 6. The wheel hub is made of stainless steel casting, the roller shaft and roller shell are made of 9Cr18 material, the tapered roller bearing assembly 4, deep groove ball bearing 14 and standard parts are all made of stainless steel, which can effectively improve the rust and corrosion resistance of the omnidirectional wheel. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:
[0021] Figure 1 It is a simplified structural diagram of the utility model.
[0022] Figure 2 for Figure 1 side view.
[0023] Figure 3 for Figure 2AA cross-sectional structural diagram.
[0024] Figure 4 for Figure 1 Schematic diagram of a single roller structure.
[0025] In the figure: 1. Wheel hub; 2. Roller shaft; 3. Roller shell; 4. Tapered roller bearing assembly; 5. O-ring; 6. Lip seal; 7. Circlip; 8. Roller sleeve; 9. Flat-end set screw; 10. Protective rubber; 11. Screw 1; 12. Screw 2; 13. Nut; 14. Deep groove ball bearing. DETAILED DESCRIPTION
[0026] In order to make the invention purpose, technical solution and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not intended to limit the scope of protection of the utility model.
[0027] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the utility model is a kind of corrosion-proof and rust-proof sealed omnidirectional wheel mechanism of the roller of the roller shell 3 at both ends of the tapered roller bearing assembly 4 is assembled, the roller shell 3 and the bearing outer ring of the tapered roller bearing assembly 4 installed on both ends of the roller shaft 2 are an integrated structure, the roller shaft 2 is fixed in the mounting hole of the wheel hub 1 by a flat-end set screw 9, the outer end of the bearing inner ring of the tapered roller bearing assembly 4 extends out of the roller shell 3 in the axial direction, lip seals 6 are installed between the two ends of the roller shell 3 and the bearing inner ring of the tapered roller bearing assembly 4, and the elastic retaining ring 7 is installed on the outside of the lip seal 6. An O-ring 5 is installed between the end and the inner ring of the tapered roller bearing assembly 4. A roller rubber sleeve 8 is inlaid on the outside of the roller shell 3. A deep groove ball bearing 14 is installed in the middle inner hole of the wheel hub 1. The deep groove ball bearing 14 and the center hole of the wheel hub 1 are interference fit. The protective rubber 10 is fixed to the wheel hub 1 between the two rollers by screw 11, screw 2 and nut 13; the wheel hub 1 is cast in stainless steel, the roller shaft 2 and the roller shell 3 are made of 9Cr18 material, the tapered roller bearing assembly 4 and the deep groove ball bearing 14 are made of stainless steel, which can effectively improve the rust and corrosion resistance of the omnidirectional wheel.
[0028] The eight rollers of this utility model are arranged in a double row, with four rollers in each row evenly spaced 360° around the circumference, and adjacent rollers are staggered at 90°. The roller shaft 2 connects the roller to the hub 1. The roller shell 3 primarily bears the load of the omnidirectional wheel. The tapered roller bearing assembly 4 is the rotating carrier of the roller. The O-ring 5 and lip seal 6 prevent water, steam, dust, and impurities from entering the roller interior, which could cause rust and corrosion. The circlip 7 prevents the lip seal 6 from falling off due to prolonged movement. The anti-slip and wear-resistant roller rubber sleeve 8 provides a soft contact between the omnidirectional wheel and the road surface.
[0029] The utility model adopts an integrated structure in which the roller shell 3 and the outer ring of the tapered roller bearing assembly 4 are integrated, thereby effectively increasing the wall thickness of the roller and improving the load-bearing capacity of the roller and the bearing; the inner ring main component of the tapered roller bearing assembly 4 is lengthened, and the lengthened bearing inner ring can facilitate the installation of a lip seal ring 6 between the bearing inner ring and the roller shell 3. The lengthened bearing inner ring can also prevent the end face of the roller bearing outer ring from contacting with the wheel hub 1 and causing friction and jamming; a protective rubber transition 10 is added to the installation transition position between the two rollers of the wheel hub 1 to prevent the wheel hub 1 from directly contacting and getting stuck on the uneven ground during use of the omnidirectional wheel.
[0030] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A corrosion-resistant and rust-resistant sealed omnidirectional wheel mechanism, characterized by: The roller shell (3) of the roller is equipped with tapered roller bearing assemblies (4) at both ends. The roller shell (3) and the outer rings of the tapered roller bearing assemblies (4) mounted on both ends of the roller shaft (2) are an integrated structure. The roller shaft (2) is fixed in the mounting hole of the wheel hub (1) by means of flat end set screws (9). The outer end of the inner ring of the tapered roller bearing assembly (4) extends out of the roller shell (3) in the axial direction. The two ends of the roller shell (3) are connected to the axis of the tapered roller bearing assembly (4). A lip seal ring (6) is installed between the bearing inner rings, and an elastic retaining ring (7) is installed on the outside of the lip seal ring (6). An O-type seal ring (5) is installed between the two ends of the roller shaft (2) and the inner ring of the tapered roller bearing assembly (4). A roller rubber sleeve (8) is inlaid on the outside of the roller shell (3). A deep groove ball bearing (14) is installed in the middle inner hole of the wheel hub (1). The protective rubber (10) is fixedly connected to the wheel hub (1) through screw 1 (11), screw 2 (12) and nut (13).
2. The anti-corrosion and rust-proof sealed omnidirectional wheel mechanism according to claim 1, characterized in that: The protective rubber (10) is fixed on the wheel hub (1) between the two rollers.
3. The anti-corrosion and rust-proof sealed omnidirectional wheel mechanism according to claim 1, characterized in that: The rollers are arranged in multiple groups in double rows, and the rollers in each group are evenly distributed 360 degrees around the circumference.
4. The anti-corrosion and rust-proof sealed omnidirectional wheel mechanism according to claim 1, characterized in that: The deep groove ball bearing (14) and the center hole of the wheel hub (1) are interference fit.
5. The anti-corrosion and rust-proof sealed omnidirectional wheel mechanism according to claim 1, characterized in that: The wheel hub (1) is made of stainless steel casting, the roller shaft (2) and the roller shell (3) are made of 9Cr18 material, and the tapered roller bearing assembly (4) and the deep groove ball bearing (14) are made of stainless steel material.