Mecanum wheel with rollers convenient to disassemble and assemble

Abstract

The utility model relates to the technology of Mecanum wheels, in particular to a Mecanum wheel which comprises a hub and a plurality of rollers installed on the circumference of the hub, a plurality of roller shaft seats are arranged on the left side portion and the right side portion of the hub, and the roller shaft seats are installed on the hub through bolts. Shaft holes are formed in the upper parts of the roll shaft seats, and the shaft holes in the roll shaft seats on the left and right sides are distributed in a staggered, oblique and coaxial manner; the roller is provided with a roller shaft which is coaxially arranged, and the two ends of the roller shaft are installed in coaxial shaft holes in the two sides. According to the Mecanum wheel hub, the production difficulty of the Mecanum wheel hub can be effectively reduced, when a roller is installed, only the roller shaft seats need to be installed at the two ends of the roller shaft and then the roller shaft seats are sequentially fixed through bolts, and therefore the installation efficiency of the roller can be greatly improved; besides, when an individual damaged roller or accessory needs to be replaced, the whole wheel does not need to be disassembled, and only any one of the two corresponding roller shaft seats needs to be disassembled, so that the maintenance efficiency of the Mecanum wheel can be greatly improved.

Description

Technical Field

[0001] The utility model relates to a Mecanum wheel technology, in particular to a Mecanum wheel with a roller that is easy to disassemble and assemble. Background Art

[0002] The main difference between a Mecanum wheel and an ordinary wheel is that multiple rollers are installed obliquely on the outer circumference of the hub. The hub shaft of the Mecanum wheel is at a 45° angle to the roller shaft, and the rollers touch the ground when the wheel is moving. The structure for installing rollers in existing Mecanum wheels is an axial hole set on the side pieces at both ends of the hub spacer, and it is not very convenient to insert the adjustment gasket when assembling and debugging the axial gap between the rollers and the two side pieces. When installing the roller, it is necessary to first insert the roller into the two side pieces, and then, with the help of a special fixture, insert the axial adjustment gasket of the roller into the gap between the end of the roller and the two side pieces, and then insert the roller shaft from the outside of the side piece into the inner hole of the roller and the adjustment gasket, and then use nuts to fix the two ends of the roller shaft. The installation process is cumbersome, and the roller is a consumable part. Each time it is replaced, the entire McReel needs to be removed to make enough space to remove the roller and roller shaft and other accessories to be replaced. When installing again, the above process needs to be reversed, so the maintenance process is very troublesome; in addition, when the McReel roller moves, there is an axial force in the same direction as the roller shaft fixing nut is screwed out, which can easily lead to the loosening of the roller shaft fixing nut, causing the roller to produce axial movement, affecting the normal operation of the McReel. Summary of the invention

[0003] The utility model aims to provide a Mecanum wheel in which a mounting seat and a hub are separately arranged, so as to simplify the disassembly and assembly process of a roller and reduce the maintenance cost, thereby solving the related problems existing in the existing Mecanum wheel.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a Mecanum wheel with rollers that are easy to disassemble and assemble, comprising a hub and a plurality of rollers mounted on the circumference of the hub, a plurality of roller seats are arranged on the left and right sides of the hub, and the roller seats are mounted on the hub by bolts; an axial hole is arranged on the upper part of the roller seat, and the axial holes on the roller seats on the left and right sides are distributed in a staggered oblique coaxial manner; the roller has a coaxially arranged roller shaft, and the two ends of the roller shaft are mounted in the coaxial shaft holes on both sides.

[0005] In the above technical solution, the roller seat and the wheel hub for installing the roller adopt a split design. First of all, this can effectively reduce the production difficulty of the Mecanum wheel hub and reduce the scrap rate. When installing the roller, it is only necessary to install the roller seat at both ends of the roller shaft and then use bolts to fix the roller seat in turn, which can greatly improve the installation efficiency of the roller; in addition, since each roller seat can be disassembled, when individual rollers and accessories are damaged, it is only necessary to disassemble the roller seat on any side to disassemble the roller and accessories to be replaced. Compared with the existing Mecanum wheel, this can greatly reduce the use cost and maintenance cost of the Mecanum wheel.

[0006] As a preferred solution, the roller shaft seat includes a lower mounting seat and an upper mounting shoulder, wherein the mounting seat is provided with a mounting hole whose axis is parallel to the axis of the wheel hub, and is mounted on the wheel hub through the mounting hole; the mounting shoulder is higher than the wheel hub and has a mounting surface II perpendicular to the roller, the axial hole is located on the mounting surface II, the axial hole is preferably a blind hole, and the roller shaft has no axial movement in the installed state, ensuring that the roller will not loosen during use.

[0007] As a preferred solution, mounting grooves for mounting the roller seat are provided on the left and right sides of the wheel hub, the top and the outer side of the mounting groove are open, and bolt holes facing the mounting holes are provided on the side walls of the mounting groove. By providing a special mounting groove, after the roller seat is fixed in the mounting groove, no additional space is added in the axial direction, so that the Mecanum wheel maintains a compact structure.

[0008] As a preferred solution, a boss is provided in the middle of the side wall of the mounting groove, the mounting hole is located on the boss, and a groove matching with the boss is provided on the mounting seat. When the roller touches the ground, pressure along the radial direction of the Mecanum wheel is generated on the roller seat. Through the cooperation between the groove and the boss, the load can be distributed to a part of the boss, thereby ensuring stable installation of the roller seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0010] Figure 1 A schematic diagram of the overall structure of the Mecanum wheel provided by the utility model;

[0011] Figure 2 for Figure 1 The schematic diagram of the planar structure of the hub in the Mecanum wheel is shown;

[0012] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the wheel hub shown;

[0013] Figure 4 for Figure 1 Schematic diagram of the outer side structure of the middle roller shaft seat;

[0014] Figure 5 for Figure 1 Schematic diagram of the inner side structure of the middle roller shaft seat;

[0015] Figure 6 It is a schematic diagram of the installation structure of the roller and the roller seats at both ends.

[0016] In the figure, the hub 1, the roller 2, the roller seat 3, the mounting groove 4, the wheel rim 11, the waist groove 12, the roller 21, the mounting seat 31, the mounting shoulder 32, the mounting hole 33, the countersunk groove 34, the groove 35, the mounting surface I36, the mounting surface II37, the shaft hole 38, the mounting surface III39, the boss 41, and the bolt hole 42. DETAILED DESCRIPTION

[0017] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] Figure 1 This is an embodiment of the utility model, a Mecanum wheel with rollers that are easy to disassemble and assemble, comprising a hub 1 and a plurality of rollers 2 mounted on the circumference of the hub 1, wherein the roller axis of the roller forms an angle of 45° with the axis of the hub 1. Unlike the existing Mecanum wheel, the roller seat 3 for mounting the rollers 2 is not integrally arranged with the hub 1, but is mounted on the hub 1 by bolts. Figure 2 and Figure 3 In this embodiment, the middle of the outer circumference of the hub 1 is uniformly contracted in the radial direction to form a waist groove 12, which is used to provide sufficient installation space for the roller; the diameter of the left and right sides of the hub 1 is larger than the diameter of the waist groove 12, and a plurality of installation grooves 4 are arranged at equal intervals along the edges of the left and right sides, and the top of the installation groove 4 and the side away from the waist groove 12 are open; Figure 3 As shown, a boss 41 protruding outward along the axial direction is provided on the side of the mounting groove 4 close to the waist groove 12 , a space is reserved between the outer periphery of the boss 41 and the mounting groove 4 , and a bolt hole 42 extending along the axial direction of the wheel hub 1 is provided in the middle of the boss 41 .

[0019] like Figure 4As shown, the roller seat 3 in this embodiment is divided into a lower mounting seat 31 and an upper mounting shoulder 32, wherein the inner side surface of the mounting seat 31 is a mounting surface I 36, a groove 35 matching with the boss 41 is arranged in the middle of the mounting surface I 36, and a mounting hole 33 facing the bolt hole 42 is arranged on the mounting seat 31. When the roller seat 3 is installed, the boss 41 can play a limiting and guiding role to ensure that the roller seat 3 is correctly installed. In the installed state, the boss 41 plays a role of supporting the roller seat 3 in the radial direction to prevent the bolts from loosening due to roller vibration. In this embodiment, the installation of the roller seat 3 will not increase the axial width of the hub 1, from Figure 1 It can be seen that the axial height of the mounting seat 31 is smaller than the axial depth of the mounting groove 4. In addition, a conical recessed groove 34 is provided on the outer side of the mounting seat 31 around the mounting hole 33. After tightening the bolt, the bolt head is located in the recessed groove 34, making the overall structure compact and simple.

[0020] The upper mounting shoulder 32 extends outwardly in the radial direction of the hub 1 and protrudes toward the waist groove 12, and a mounting surface II 37 perpendicular to the roller 2 is formed on the side of the protruding portion, and an axial hole 38 is provided on the mounting surface II 37, as shown in FIG. Figure 5 As shown, the back side of the raised portion is a mounting surface III 39 located above the mounting surface I 36. In the installed state, the mounting surface III 39 is located at the periphery of the hub 1. In order to increase the support of the hub 1 to the roller seat 3, the mounting surface III 39 can be arranged to contact the periphery of the hub 1. This can effectively prevent the entire roller seat 3 from breaking at the connection between the mounting seat 31 and the mounting shoulder 32.

[0021] Based on the wheel hub 1 and roller seat 3 of the above structure, when installing the roller 2, first install the roller seat 3 at one end, then insert one end of the roller shaft 21 into the axial hole 38 of the roller seat 3, and then install the roller seat 3 at the other end. By setting the axial hole 38 as a blind hole, there is no need to use nuts to fix the roller shaft after the two roller seats 3 are installed, thereby effectively improving the disassembly and assembly efficiency. Since nuts are no longer used to fix the roller shaft, this also avoids the phenomenon of the roller installation position being dislocated due to loose nuts.

[0022] In this embodiment, the split design of the roller seat 3 not only reduces the difficulty of producing the Mecanum wheel hub, but also effectively improves the installation efficiency of the rollers. When an individual roller seat 3 is damaged, the roller can be replaced by disassembling the roller seat 3 at one end. Therefore, the maintenance work can be completed quickly without disassembling the entire Mecanum wheel.

[0023] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0024] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0025] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A Mecanum wheel with rollers that are easy to disassemble and assemble, comprising a hub and a plurality of rollers mounted on the circumference of the hub, characterized in that: A plurality of roller seats are arranged on both the left and right sides of the wheel hub, and the roller seats are mounted on the wheel hub by bolts; an axial hole is arranged on the upper part of the roller seat, and the axial holes on the roller seats on the left and right sides are distributed in a staggered oblique coaxial manner; the roller has a coaxially arranged roller shaft, and both ends of the roller shaft are mounted in the coaxial axial holes on both sides.

2. The Mecanum wheel with rollers that are easy to disassemble and assemble as claimed in claim 1, characterized in that: The roller seat includes a lower mounting seat and an upper mounting shoulder, wherein the mounting seat is provided with a mounting hole whose axis is parallel to the axis of the hub, and is mounted on the hub through the mounting hole; the mounting shoulder is higher than the hub and has a mounting surface II perpendicular to the roller, and the axial hole is located on the mounting surface II.

3. The Mecanum wheel with rollers that are easy to disassemble and assemble as claimed in claim 2, characterized in that: The shaft hole is a blind hole, and the roller shaft of the roller has no axial sliding in the installed state.

4. The Mecanum wheel with rollers that are easy to disassemble and assemble as claimed in claim 3, characterized in that: Mounting grooves for mounting the roller shaft seat are arranged on the left and right sides of the wheel hub, the top and the outer side of the mounting groove are open, and bolt holes facing the mounting holes are arranged on the side walls of the mounting groove.

5. The Mecanum wheel with rollers that are easy to disassemble and assemble as claimed in claim 4, characterized in that: A boss is arranged in the middle of the side wall of the installation groove, the installation hole is located on the boss, and a groove matched with the boss is arranged on the installation seat.

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