CN212289372U - Lightweight omniwheel - Google Patents

Abstract

The utility model discloses a lightweight omniwheel belongs to the omniwheel field. A lightweight omni-wheel comprising a hub rotatable about an axle and a plurality of rollers mounted on the hub, the rollers being freely rotatable about their central axes, the central axes of the rollers being disposed in a plane orthogonal to the axle, the outer contours of the rollers being disposed on the same circumference about the axle, wherein the hub includes a bracket connected to each of the rollers, and bearings of the omni-wheel are mounted on the bracket connected to each of the rollers. The utility model discloses a lightweight omniwheel has that the quality is light, the load is big, low in manufacturing cost, and simple to operate maintains advantages such as swift.

Description

Lightweight omniwheel

Technical Field

The utility model relates to an omniwheel technical field indicates a lightweight omniwheel especially.

Background

The omnidirectional wheel is a supporting element of the wheel type road walking mechanism, and can freely move laterally when moving along the circumferential direction, so that the movement flexibility of the walking mechanism is improved.

The existing 90-degree omni-directional wheel can be roughly divided into a single row and a double row. Driven rollers in different forms are arranged on the circumference of the hub by the single-row omni-directional wheel, and the outer contours of all the rollers are on the same circumference. When the single-row omnidirectional wheel rotates, the motion stability depends on the clearance between the driven rollers, and the continuity and the stability of the lateral motion can be ensured because the outer contour of each roller is on the same circumference.

The existing single-row omni wheel is difficult to meet the requirement of applying the omni wheel in batches of civil products, and the following defects exist or exist partially:

1. the cost is high, each small roller is provided with an independent assembly type bracket, and the bracket has a complex structure and complex assembly;

2. the bearing capacity is not high, and the manufacturing cost is increased if the bearing capacity is improved;

3. the maintenance is difficult, for example, the driven roller is worn and must be disassembled integrally;

4. the overall weight of the wheel is large;

5. poor stability or poor lateral obstacle crossing capability;

6. non-maintainable, requires that the gyro wheel processing be equipped with very high uniformity, once partial gyro wheel wear out failure, the omniwheel is scrapped etc..

Two rows of driven rollers are uniformly distributed on a wheel hub of the conventional double-row omni-directional wheel, and adjacent rollers are staggered in a crossed manner. Because the axis of the hub is difficult to be parallel to the ground in the movement, the height difference exists between the double rows of driven rollers and the ground, and the movement vibration is large. Meanwhile, during lateral movement, the roller wheel support is easy to interfere with a ground bulge, obstacle crossing capability of the omnidirectional wheel is limited, and terrain adaptability is insufficient.

Therefore, the utility model relates to a lightweight omniwheel reduces the complexity of assembly, reduces its cost, reduces its weight when improving wheel stability and bearing capacity, and it is very necessary to increase its maintainability.

Disclosure of Invention

The utility model aims at providing a lightweight omniwheel reduces the complexity of assembly, reduces its cost, reduces its weight when improving wheel stability and bearing capacity, increases its maintainability, has improved the market competition of product.

The utility model provides a technical scheme as follows: a portable omni wheel comprises a hub capable of rotating around an axle and a plurality of rollers mounted on the hub, wherein the rollers can freely rotate around the central axes of the rollers, the central axes of the rollers are arranged in a plane orthogonal to the axle, the outer contours of the rollers are arranged on the same circumference centering on the axle, the hub comprises a bracket connected with each roller, and a bearing of the omni wheel is mounted on the bracket connected with each roller.

In this technical scheme, with the bearing installation on the support, but the required quantity of bearing of greatly reduced omniwheel, the gyro wheel need not also process the dead eye, but the manufacturing cost of greatly reduced omniwheel.

Preferably, the bearing is a flange bearing or a flange bushing.

In the technical scheme, the bearing adopts a flange bearing or a flange shaft sleeve, the flange edge can be used for bearing force, the roller of the omnidirectional wheel is prevented from moving in the moving process, the bearing can bear the moving lateral force, and the bearing force range of the omnidirectional wheel is enlarged.

Preferably, the hub and the first bracket are integrally formed, and the second bracket and the hub are detachably connected.

In this technical scheme, the second support with wheel hub can dismantle the connection, has reduced the degree of difficulty of omniwheel installation widely to in the maintenance of omniwheel, can only dismantle its corresponding support, increased the convenience of maintaining.

Preferably, the first brackets and the second brackets are uniformly and alternately arranged at the outer end of the hub to form a single-row bracket or a double-row bracket, the number of the first brackets and the second brackets on each row is the same, and the sum of the number of the first brackets and the number of the second brackets is a double number.

In this technical scheme, the utility model discloses single omniwheel or double omniwheel can be made to the lightweight omniwheel, has increased the utility model discloses a variety.

Preferably, the second bracket is of a U-shaped structure.

In the technical scheme, the U-shaped structure is adopted, the use strength of the support is increased, and the double-end support is adopted, so that the bearing range of the support is increased.

Preferably, the plurality of rollers of the omnidirectional wheel include a large roller set and a small roller set, the large roller set is mounted on the first support, the small roller set is mounted on the second support, the large roller set includes at least 3 rollers, the small roller set includes at least 2 rollers, two outer ends of the large roller set are provided with concave portions, two outer ends of the small roller set are nested in the concave portions of the large roller set, and the large roller set and the small roller set are alternately arranged so that the outer contours of the rollers are all configured on the same circumference with the axle as the center.

Preferably, the large roller group comprises 3 rollers, namely a first central roller and 2 first symmetrical rollers, the first central roller is mounted in the middle of the first bracket, and the first symmetrical rollers are symmetrically mounted on two sides of the first bracket; the small roller group comprises 3 rollers which are respectively a second central roller and 2 second symmetrical rollers, the second central roller is arranged in the middle of the second support, and the second symmetrical rollers are symmetrically arranged on two sides of the second support.

Preferably, the large roller group comprises 3 rollers, namely a first central roller and 2 first symmetrical rollers, the first central roller is mounted in the middle of the first bracket, and the first symmetrical rollers are symmetrically mounted on two sides of the first bracket; the small roller group comprises 2 rollers which are respectively and symmetrically arranged on two sides of the second bracket.

In the technical scheme, the roller group is installed on the first support and the second support firstly, so that the installation convenience is greatly improved, and the roller group adopts the combination of three-section small rollers, so that the installation convenience is improved, and the running stability of the rollers is improved.

Preferably, the number of the large roller groups and the small roller groups on each row of the brackets is 4, and the number of the first brackets and the second brackets is 4.

In the technical scheme, the operation is more stable and continuous by using 4 large roller groups and 4 small roller groups, the bearing range is larger, and the installation is simpler and more convenient.

Preferably, each roller consists of a wheel core and a tread, and bearing holes do not need to be machined.

In the technical scheme, the roller wheel consisting of the wheel core and the tire surface is adopted, so that the manufacturing cost and the material cost are lower, and particularly, after a bearing hole is not required to be machined, the manufacturing cost of the omnidirectional wheel can be greatly reduced.

The utility model provides a pair of lightweight omniwheel can bring following at least one beneficial effect:

1. the utility model discloses in, through installing the bearing on linking bridge, reducible bearing quantity reduces gyro wheel processing technology, changes wheel hub's material into the aluminum product by steel, and the manufacturing cost of the equal greatly reduced omniwheel of each kind of change reduces the weight of omniwheel, increases market competition.

2. In the utility model, the flange bearing is arranged on the connecting bracket, so that the bearing capacity of the omnidirectional wheel moving in the lateral direction can be greatly increased, and the bearing capacity and the operation stability of the omnidirectional wheel are increased;

3. in the utility model, the wheel hub is integrally formed, the large roller train and the small roller train form the assembly component and then are installed, the installation mode is simple, the maintenance and the replacement are easier and faster, and the maintainability is greatly improved;

4. the utility model discloses an above advantage can be satisfied completely to the omniwheel and the demand of using the omniwheel in batches of civilian product is synthesized.

Drawings

The above features, technical features, advantages and modes of realisation of the present invention will be further explained in the following detailed description of preferred embodiments thereof, which is to be read in conjunction with the accompanying drawings.

Fig. 1 is a schematic cross-sectional structural view of a first embodiment of the present invention;

fig. 2 is a schematic structural view of a wheel hub according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of an installation process of the first embodiment of the present invention;

fig. 4 is a schematic structural diagram of an installation process of the first embodiment of the present invention;

fig. 5 is a complete schematic view of a first embodiment of the invention;

fig. 6 is a schematic sectional structural view of a third embodiment of the present invention.

The reference numbers illustrate:

100. omnidirectional wheel 10, large roller set 11, first central roller 12 and first symmetrical roller

13. First flange bearing 14, second flange bearing 15, pin 16 and screw

20. Small roller group 21, second central roller 22, second symmetrical roller 23 and pin shaft

24. Third flange bearing 25, fourth flange bearing 26, screw

30. Wheel hub 31, first bracket 32, second bracket

121. And a concave cavity structure.

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In this document, upper, lower, left, right, front and right refer to upper, lower, left, right, front and right of the described drawings, which do not fully represent actual circumstances.

As shown in fig. 1-6, the utility model relates to a lightweight omniwheel 100, including can around the rotatory wheel hub of axletree and a plurality of install in wheel hub's gyro wheel, the gyro wheel can be around self central axis free rotation, and each the central axis of gyro wheel all sets up in with the plane of axletree quadrature, the outline of each gyro wheel all disposes on the same circumference with the axletree is the center, its characterized in that, wheel hub includes with each the support that the gyro wheel is connected, the bearing of omniwheel is installed on the support of being connected with each the gyro wheel.

The first supports and the second supports are evenly and alternately arranged at the outer ends of the wheel hubs to form single-row supports or double-row supports, the number of the first supports and the number of the second supports in each row are the same, and the sum of the number of the first supports and the number of the second supports is a double number.

The plurality of rollers mounted on the hub include a plurality of large roller sets 10 and a plurality of small roller sets 20, the plurality of large roller sets 10 and the plurality of small roller sets 20 can rotate freely around their central axes, and the central axes of the roller sets are all disposed in a plane orthogonal to the axle.

Specifically, in the first embodiment, as shown in fig. 1 to 4: a first bracket 31 for mounting the large roller group 10 and a second bracket 32 for mounting the small roller group 20 are uniformly arranged on the outer circumference of the hub 30. The first bracket 31 and the second bracket 32 may be directly and fixedly connected to the outer circumference of the hub 30, or may be detachably connected to the outer circumference of the hub.

In this embodiment, it is preferable that the first brackets 31 and the hub 30 are formed as an integral structure, the second brackets 32 are detachably connected to the outer periphery of the hub 30, the first brackets 31 and the second brackets 32 are alternately and uniformly arranged on the outer periphery of the hub 30, and the distance between the first brackets 31 and the second brackets 32 is equal.

The second support 32 is designed to be of a U-shaped structure, the bearing capacity and the connection stability of the omnidirectional wheel can be greatly improved by integrally connecting the second support to the hub 30 in a double-end supporting mode, the use strength of the second support can also be improved, the hub 30 and the second support can be adjusted to be made of aluminum alloy through steel, the overall weight of the omnidirectional wheel is further reduced, and the material cost and the manufacturing cost of the omnidirectional wheel are reduced.

Preferably, the hub 30 of the portable omni wheel 100 of the present invention is made of aluminum, has a uniform cross-sectional size, and can be manufactured by aluminum extrusion or die casting. The second bracket 32 is made of aluminum and can be manufactured by aluminum extrusion or die casting. Compared with the prior steel structure, the manufacturing cost of the omnidirectional wheel can be greatly reduced, and the weight of the omnidirectional wheel can also be greatly reduced.

As shown in fig. 2, a bearing hole is formed in the first bracket 31. The bearing of the common bearing used in the prior omnidirectional wheel is arranged in the roller, and the bearing effect is limited, so that the wheel can integrally float under the action of lateral force when moving laterally, the bearing capacity is not enough, and the running stability is not enough. And because the bearing is installed among the gyro wheel, lead to the quantity of bearing too much, and must carry out the dead eye processing to the gyro wheel inner core, lead to the manufacturing cost height of current omniwheel to live in.

Taking a conventional omni-directional wheel bearing-mounted in a roller as an example, if the bearing is mounted in the roller, 2 bearings are required to be mounted in each roller, and if there are 4 large roller groups and 4 small roller groups, each roller group has 2 rollers, the number of bearings required is 64 bearings.

In the present invention, as shown in fig. 1: install the bearing on the support, because the utility model discloses a form that U-shaped support bi-polar supported, 16 bearings are all needed altogether.

The utility model discloses preferably use flange bearing or flange copper sheathing, symmetry mounting flange bearing or flange copper sheathing, flange face and the laminating of support lateral surface. The flange edge can bear the lateral force of the lateral movement of the wheel, the capability of bearing radial and axial loads of the roller of the omnidirectional wheel and the supporting frame can be greatly improved, the flange surface can prevent the roller from moving in the moving process of the omnidirectional wheel, and the stability of the lateral movement is improved.

The utility model discloses in, because the bearing is installed on first support 31 and second support 32, not only can reduce the quantity of bearing, further reduce the holistic manufacturing cost of omniwheel, the gyro wheel inner core need not process the dead eye moreover, has simplified gyro wheel processing technology widely, makes omniwheel manufacturing cost further reduce.

The utility model relates to a wheel hub 30 of lightweight omniwheel can be connected with the gyro wheel of present multiple omniwheel. A specific connection is given below, but not limited to this connection.

As shown in fig. 1 to 5, the large roller set 10 and the small roller set 20 of the portable omni-directional wheel 100 of the present invention each include 3 rollers.

The large roller group 10 includes 3 rollers, which are respectively a first central roller 11 and 2 first symmetrical rollers 12, as shown in fig. 1: the first central roller 11 is arranged in the middle of the first bracket 31, the 2 first symmetrical rollers 12 are arranged on two sides of the first bracket 31 and are symmetrical to each other, the shape of the large roller group 10 is similar to an olive shape, and particularly, the rollers are distributed with revolving body grooves along the axial direction, so that the obstacle crossing capability can be improved.

The small roller group 20 includes 3 rollers, which are respectively a second central roller 21 and 2 second symmetrical rollers 22, as shown in fig. 1: the second central roller 21 is arranged in the middle of the second bracket 32, the 2 second symmetrical rollers 22 are arranged on two sides of the second bracket 32 and are symmetrical to each other, the shape of the small roller group 20 is also similar to an olive shape, and particularly, the rollers are distributed with revolving body grooves along the axial direction, so that the obstacle crossing capability can be improved.

In the present invention, the end of the first symmetrical roller 12 has a cavity structure 121 for accommodating the end of the second symmetrical roller 22, the end of the second symmetrical roller 22 is embedded into the cavity structure 121, so that the wheel hub 30 is uniformly staggered in the circumferential direction between the large roller set 10 and the small roller set 20, each of which is perpendicular to the radius direction and the rotation axis of the roller sets is in the intersecting plane of the wheel axle, and all the roller outlines are on the same circumference.

The utility model discloses in, because the bearing sets up on the support, consequently need not process the dead eye of gyro wheel, each the gyro wheel all can comprise wheel core and tread, engineering plastics such as the preferred aluminum product of wheel core material or nylon, and the tread is elastic material such as rubber.

The wheel core can be processed by an aluminum extrusion process, so that the section of the wheel core is consistent, and the wall thickness of the tire tread is uneven; the tire can also be manufactured by a die-casting or injection molding process, so that the profile of the wheel core is concentric with the outer hub of the tire tread, and the wall thickness of the tire tread is uniform.

The utility model discloses in, processing has the dead eye on the first support 31, symmetry mounting flange bearing or flange copper sheathing, flange face and the laminating of support lateral surface. The first central roller 11 is arranged in the middle of the bearing, the first symmetrical rollers 12 are symmetrically arranged on two sides of the bearing, the pin shaft 15 sequentially passes through the left roller of the first symmetrical roller 12, the first flange bearing 13, the first central roller 11, the second flange bearing 14 and the right roller of the first symmetrical roller 12, is locked and attached through the screw 16, the inner core of the first central roller 11, the inner core of the first symmetrical roller 12, the inner rings of the first flange bearing 13 and the second flange bearing 14 are tightly attached together, and the first support 31 is tightly attached together to form a large roller assembly.

Similarly, the second bracket 32 is provided with a bearing hole, a flange bearing or a flange copper sleeve is symmetrically mounted, and the flange surface is attached to the outer side surface of the bracket. The second central roller 21 is arranged in the middle of the bearing, the second symmetrical rollers 22 are symmetrically arranged on two sides of the bearing, a pin shaft 23 sequentially passes through a left roller of the second symmetrical roller 22, a third flange bearing 24, the second central roller 21, a fourth flange bearing 25 and a right roller of the second symmetrical roller 22, and is locked and attached through a screw 26, so that an inner core of the second symmetrical roller 22, an inner ring of the third flange bearing 24 and the fourth flange bearing 25, the second bracket 32 and the inner core of the second central roller 21 are tightly attached together, and a small roller assembly is formed.

The utility model relates to an assembly method of lightweight omniwheel 100, as shown in FIG. 3 and FIG. 4: the large roller groups 10 are directly assembled with the first brackets 31 on the wheel hubs 30 respectively; positioning and assembling hole sites are uniformly distributed on the hub 30 in the circumferential direction and are used for connecting the assembling components of the second small roller group 20. The small roller groups 20 are respectively assembled with the second support 32, and then the small roller assembly components are assembled with the hub 30 support along the radial direction, positioned by concave-convex surfaces and locked by screws.

Adopt this kind of assembly, when maintaining single roller train, dismantle two adjacent roller trains at most, avoid dismantling whole omniwheel, maintain that the change gyro wheel is light swift to great improvement omniwheel gyro wheel and gyro wheel support bear the ability of radial and axial load, increased the stationarity of omniwheel side direction operation.

Preferably, not shown in the drawings, the hub 30 and the small roller group 20 can be positioned and connected by a sliding groove buckle or the like, and is not limited to a screw bolt connection.

It should be noted that the second bracket 32 is preferably of a U-shaped configuration, but other simple modifications of the U-shaped configuration may be used.

Preferably, as shown in FIGS. 1-6: the utility model discloses an omniwheel includes 4 big roller trains and 4 little roller trains, and 4 big roller trains 10 and 4 little roller trains 20 are nested each other. Four first supports 31 and wheel hub 30 integrated into one piece form the main support, and second support 32 forms 4 auxiliary stands, and 4 big roller train are directly installed respectively on four first supports 31, and four little roller trains are installed respectively and are installed again on wheel hub 30's main support after on four second supports 32, so the utility model discloses lightweight omniwheel 100's structure quantity is less, and the support all can use the processing of aluminium extrusion technology, and processing low in manufacturing cost, the assembly between the support can change the gyro wheel alone, is convenient for maintain, and the operation bearing capacity is stronger, and operating stability is higher.

In the second embodiment, the hub 30 and the second bracket 32 are integrally formed, and the first bracket 31 is formed into a U-shaped structure detachably connected to the hub 30. The small roller assembly 20 is directly and tightly mounted on the second bracket 32 through a flange bearing or a flange shaft sleeve, a pin shaft and a screw to form a small roller assembly, the large roller assembly 10 is firstly tightly attached to the first bracket 31 through the flange bearing or the flange shaft sleeve, the pin shaft and the screw to form a large roller assembly, and then the large roller assembly is assembled with the hub 30 bracket along the radial direction.

In the third embodiment, on the basis of the previous embodiment, the number of the rollers of the small roller set 20 may also be 2, and only two second symmetrical rollers 22 are included and symmetrically installed on both sides of the bracket, and the end portions of the second symmetrical rollers 22 are nested into the concave portions 121 of the first symmetrical rollers 21.

In the fourth embodiment, on the basis of the previous embodiments, the wheel hub 30 is widened, the first brackets 31 and the second brackets 32 are uniformly arranged in two rows in the width direction of the wheel hub 30, and each row is connected with 4 large roller sets 10 and 4 small roller sets 20 to form a two-row omni-directional wheel, so that more weight can be borne.

To sum up, the utility model discloses a lightweight omniwheel 100 has low in manufacturing cost, and the quality is light, and the mounting means is simple, and easy maintenance is swift, advantages such as bearing capacity is strong.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A portable omnidirectional wheel comprises a wheel hub capable of rotating around an axle and a plurality of rollers arranged on the wheel hub, wherein the rollers can freely rotate around the central axis of the rollers, the central axis of each roller is arranged in a plane orthogonal to the axle, the outline of each roller is arranged on the same circumference centering on the axle, the portable omnidirectional wheel is characterized in that the wheel hub comprises a bracket connected with each roller, a bearing of the omnidirectional wheel is arranged on the bracket connected with each roller, each roller is composed of a wheel core and a tire tread, and bearing holes do not need to be machined.

2. A lightweight omni wheel according to claim 1, wherein the bearing is a flange bearing or a flange bushing.

3. The lightweight omni wheel according to claim 2, wherein the bracket comprises a first bracket and a second bracket, the hub is integrally formed with the first bracket, and the second bracket is detachably connected to the hub.

4. A lightweight omni wheel according to claim 3, wherein the first brackets and the second brackets are evenly and alternately arranged at the outer end of the hub to form a single row of brackets or a double row of brackets, the number of the first brackets and the second brackets in each row is the same and the sum of the number of the first brackets and the second brackets is a double number.

5. The lightweight omni wheel according to claim 4, wherein the second bracket has a U-shaped configuration.

6. The lightweight omni wheel according to claim 5, wherein the plurality of rollers of the omni wheel includes a large roller set and a small roller set, the large roller set is mounted on the first bracket, the small roller set is mounted on the second bracket, the large roller set includes at least 3 rollers, the small roller set includes at least 2 rollers, two outer ends of the large roller set are provided with concave portions, two outer ends of the small roller set are nested in the concave portions of the large roller set, and the large roller set and the small roller set are alternately arranged so that the outer contours of the rollers are all disposed on the same circumference centering on the axle.

7. The lightweight omni wheel according to claim 6, wherein the large roller set comprises 3 rollers, namely a first central roller and 2 first symmetrical rollers, the first central roller is installed in the middle of the first bracket, and the first symmetrical rollers are symmetrically installed on both sides of the first bracket; the small roller group comprises 3 rollers which are respectively a second central roller and 2 second symmetrical rollers, the second central roller is arranged in the middle of the second support, and the second symmetrical rollers are symmetrically arranged on two sides of the second support.

8. The lightweight omni wheel according to claim 6, wherein the large roller set comprises 3 rollers, namely a first central roller and 2 first symmetrical rollers, the first central roller is installed in the middle of the first bracket, and the first symmetrical rollers are symmetrically installed on both sides of the first bracket; the small roller group comprises 2 rollers which are respectively and symmetrically arranged on two sides of the second bracket.

9. A lightweight omni wheel according to any one of claims 7 or 8, wherein the number of the large roller sets and the small roller sets on each row of the brackets is 4, and the number of the first brackets and the second brackets is 4.

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