Mecanum wheel

Abstract

The Mecanum wheel comprises a fixed shaft and two hubs installed at the two ends of the fixed shaft in a paired mode, a roller is connected between the two hubs, the hubs are bent to form a plurality of bent parts used for installing the roller in a paired mode, the bent parts are provided with through inserting holes, the roller comprises a connecting shaft, a shaft core and an outer tire, and the connecting shaft is connected with the shaft core. A connecting hole communicated with the outside is formed in the connecting shaft, a plug pin shaft is arranged in the connecting hole, an elastic piece used for driving the plug pin shaft to be continuously exposed out of the end of the connecting shaft is arranged in the connecting hole, and the end, away from the elastic piece, of the plug pin shaft acts on the inserting hole through the elastic force of the elastic piece for clamping and pairing. The elastic force of the elastic piece is overcome through pressing operation, so that the plug pin shaft is shrunk inwards along the connecting hole, the plug pin shaft and the inserting hole are clamped and matched or separated conveniently, therefore, the roller and the inserting hole are quickly butted or separated, and the convenience and efficiency of quick mounting and dismounting are improved.

Description

Technical Field

[0001] The present invention relates to the field of rollers, and more particularly to a Mecanum wheel. Background Art

[0002] As a wheeled device with unique motion characteristics, the Mecanum wheel has shown great application value in many fields. With its special structural design, it can achieve omnidirectional flexible movement, and can complete various complex movements such as forward, backward, lateral translation, and in-situ rotation without the steering mechanism of traditional vehicles, greatly improving the mobility and flexibility of mobile devices. It is widely used in various fields, including but not limited to handling robots, logistics sorting equipment, driverless vehicles, intelligent inspection vehicles, entertainment, scientific research, military and other fields, and the Mecanum wheel also has varying degrees of application, providing strong support for the innovation and development of related equipment.

[0003] Existing Mecanum wheels usually consist of a hub and multiple rollers evenly distributed around the hub. The hub is the core support component of the entire Mecanum wheel, and the rollers are the key components for the Mecanum wheel to achieve omnidirectional movement. The outer surface of the rollers is usually wrapped with elastic materials such as rubber to increase the friction with the ground, improve the grip and movement stability of the wheels. During the assembly process, in order to prevent the rollers from axially moving on the hub, a structure similar to a stepped shaft is usually designed on the hub, or blind holes are machined on the hub, and this structural form is used to limit the axial displacement of the rollers. During assembly, all the rollers need to be installed at the corresponding positions on the hub simultaneously, and this process requires high assembly accuracy and operation skills.

[0004] However, since all the rollers of the existing Mecanum wheel need to be assembled simultaneously during assembly, this operation process is extremely cumbersome. In some cases where the rollers need to be frequently replaced to adapt to different ground conditions or load requirements, the existing assembly method makes the replacement of the rollers extremely inconvenient, resulting in difficult rapid disassembly and assembly of the rollers and the hub. When a roller of the Mecanum wheel is damaged and needs to be replaced during use, the existing structural form makes the replacement work very difficult. Since the connection between the roller and the hub is relatively tight and there is no convenient disassembly and assembly method, assembly personnel need to spend a lot of time and effort to disassemble the damaged roller and reinstall a new roller, which not only increases the maintenance cost of the equipment, but also prolongs the downtime of the equipment and reduces the use efficiency of the equipment. Summary of the Invention

[0005] The object of the present invention is to solve the above defects and provide a Mecanum wheel to solve the technical problem that the rollers of the existing Mecanum wheel in the above background art are not easy to be quickly disassembled and assembled, affecting the assembly efficiency and the subsequent maintenance disassembly and assembly use efficiency.

[0006] The object of the present invention is achieved in the following manner:

[0007] A Mecanum wheel includes a fixed shaft and two hubs paired and installed at both ends of the fixed shaft. A plurality of inclined rollers are connected between the two hubs. The plurality of rollers are detachably arranged in a circumferential array along the periphery of the fixed shaft. A plurality of bending parts for paired installation of the rollers are formed on the hub by bending. The bending parts are provided with through insertion holes. The roller includes a connecting shaft, a shaft core and an outer tire. A connecting hole communicating with the outside is formed in the connecting shaft. An insertion pin shaft is arranged in the connecting hole. One end of the insertion pin shaft passes through the connecting hole and is exposed at one end of the connecting shaft. An elastic member for driving the insertion pin shaft to be continuously exposed at the end of the connecting shaft is arranged in the connecting hole. The end of the insertion pin shaft away from the elastic member acts on the insertion hole through the elastic force of the elastic member for clamping and pairing. A through hole is formed in the shaft core in a conducting manner. The connecting shaft and the through hole are coaxially paired and inserted and connected. The outer side surface of the shaft core is clamped and connected with the outer tire through a clamping structure. A connecting structure for pairing the shaft core and clamping and pairing with the clamping structure is formed inside the outer tire;

[0008] When pressing the insertion pin shaft, the elastic member is compressed to cause the insertion pin shaft to retract axially along the connecting hole, and the roller can be quickly detached from the hub. On the contrary, by pressing the insertion pin shaft to contract axially along the connecting hole, the insertion pin shaft is coaxially paired with the insertion hole. When the pressing on the insertion pin shaft is released, the elastic member applies a reset elastic force to the insertion pin shaft and makes the insertion pin shaft dock with the insertion hole, and the insertion pin shaft can be quickly paired and inserted between the two hubs.

[0009] Further in the above description, an installation hole for connecting a drive shaft is formed inside the fixed shaft. Convex positioning bosses are formed at both ends of the fixed shaft. The hub is clamped and paired with the positioning bosses through positioning holes. A positioning pin is formed on the positioning boss, and a positioning groove for pairing with the positioning pin is formed on the inner wall of the positioning hole.

[0010] Through the clamping cooperation between the positioning boss and the positioning hole, and the precise alignment between the positioning pin and the positioning groove, the rapid positioning and connection of the hub and the fixed shaft are realized, avoiding repeated adjustment caused by inaccurate alignment in traditional assembly, and significantly shortening the assembly time. At the same time, this structure facilitates the disassembly of the hub for maintenance or replacement, solves the problem of cumbersome disassembly and assembly of the roller and the hub in the prior art, and reduces the equipment downtime and maintenance cost.

[0011] Further in the above description, a limiting part is formed at the end of the connecting shaft. A limiting hole communicating with the connecting hole is formed in the limiting part. A guiding part and a plugging part are formed on the insertion pin shaft. The guiding part is placed inside the connecting hole, and the guiding part can slide axially along the connecting hole. The plugging part passes through the limiting hole and extends to the outside of the connecting shaft, so that the sliding of the guiding part along the connecting hole drives the plugging part to perform telescopic movement.

[0012] The guiding part of the insertion pin shaft can slide axially along the connection hole, and its movement range is restricted by the limiting hole, ensuring that the insertion part retracts only when pressed. This design makes the alignment operation of the insertion pin shaft and the insertion hole more intuitive and convenient, enabling quick disassembly and assembly without complex tools, solving the problem of difficult roller replacement in the prior art, and improving the maintenance efficiency.

[0013] Further in the above description, the elastic member is built into the connection hole. One end of the elastic member abuts against the limiting part, and the elastic member drives the insertion part to continuously protrude outside the connection hole through the elastic force.

[0014] The elastic member keeps the insertion part in the protruding state all the time through the elastic force, ensuring the connection stability between the roller and the hub, and reducing accidental detachment caused by vibration or load. At the same time, the reverse elastic force generated when the elastic member is compressed by pressing the insertion pin shaft can assist the insertion part to reset, further simplifying the installation process and improving the convenience of disassembly and assembly.

[0015] Further in the above description, the elastic member is composed of a spring.

[0016] As a standardized elastic element, the spring has the characteristics of low cost, high reliability, and long service life, and can provide stable elastic force output for a long time to ensure the reliable clamping between the insertion pin shaft and the insertion hole.

[0017] Further in the above description, two insertion pin shafts are provided, and the two insertion pin shafts are respectively arranged at both ends of the connection shaft. Both ends of the elastic member abut against the ends of the two insertion pin shafts respectively, so that the elastic member can drive the insertion parts of the two insertion pin shafts to protrude from the ends of the connection shaft.

[0018] By arranging the insertion pin shafts at both ends of the connection shaft and using the elastic member to drive the insertion parts at both ends simultaneously, synchronous fixation of the roller and the hubs on both sides is achieved. This design enhances the symmetry and stability of the connection, avoiding the problem of uneven load caused by single-sided fixation. At the same time, pressing any one of the insertion pin shafts can trigger disassembly, providing double operation convenience.

[0019] Further in the above description, the connection shaft is paired and connected with the through hole of the shaft core. The clamping structure includes a clamping part and a plurality of positioning protrusions. There are two clamping parts, and the two clamping parts are respectively formed at both ends of the shaft core, so as to form a clamping gap for inserting the outer tire between the two clamping parts. The positioning protrusions are arranged along the outer surface of the shaft core. A through sleeve hole is formed inside the outer tire. The connection structure is composed of a plurality of positioning grooves, and the positioning grooves are arranged on the inner wall of the sleeve hole. The outer tire is paired and sleeved with the shaft core through the sleeve hole and is paired and connected with the positioning protrusions through the positioning grooves.

[0020] The clamping gap formed by the clamping part and the tight fit of the outer tire sleeve hole, combined with the axial limit of the positioning protrusion and the positioning groove, ensure the stable connection between the outer tire and the shaft core, preventing the outer tire from axially moving or circumferentially sliding during use. This structure simplifies the installation process of the outer tire and improves the overall durability and running smoothness of the roller.

[0021] Further in the above description, the shaft core is arranged in an "I" shape.

[0022] Further in the above description, the bending parts on the two hubs are arranged obliquely opposite to each other, so that the roller is installed at a 45-degree inclination.

[0023] Further in the above description, a fixing hole is provided on the end face of the fixed shaft, an assembly hole paired with the fixing hole is provided on the hub, and the hub is connected to the fixing hole by a bolt passing through the assembly hole.

[0024] By passing a bolt through the assembly hole and connecting it to the fixing hole, the detachable fixation of the hub and the fixed shaft is achieved. This structure prevents the hub from loosening during use, and at the same time facilitates the quick disassembly of the hub for internal maintenance or roller replacement, solving the problem of complex maintenance in the prior art.

[0025] The beneficial effects of the present invention: By arranging multiple rollers along the periphery of the fixed shaft, the rollers are detachably installed in a circumferential array with the hub through the telescopic movement of the insertion pin shaft. Each roller can be independently disassembled and assembled, effectively solving the operation problem of the need to disassemble the roller group as a whole for traditional Mecanum wheels. When a single roller is damaged or needs to be replaced, there is no need to damage the connection relationship of other intact components, significantly reducing the maintenance complexity. Through the insertion pin shaft and the elastic member arranged inside the connecting shaft, a self-resetting structure is formed. By pressing the operation to overcome the elastic force of the elastic member, the insertion pin shaft retracts along the connecting hole. When the insertion pin shaft moves to be paired with the insertion hole, the elastic member generates elastic reset, causing the insertion pin shaft to be clamped and paired with the insertion hole, thereby realizing the quick docking or separation of the roller and the insertion hole, enhancing the quick installation and disassembly efficiency of the roller and improving the convenience of use. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall structure in the first direction of this embodiment;

[0027] Figure 2 It is a schematic diagram of the overall structure in the second direction of this embodiment;

[0028] Figure 3 It is a side view of this embodiment;

[0029] Figure 4 It is an exploded structure schematic diagram of this embodiment;

[0030] Figure 5Schematic cross-sectional view of the combined structure of the roller in this embodiment;

[0031] Figure 6 Schematic diagram of the connection shaft, insertion pin shaft and spring in this embodiment;

[0032] Figure 7 Schematic diagram of the shaft core and the outer tire in this embodiment;

[0033] The reference numerals in the figure are respectively: 100 - fixed shaft, 101 - mounting hole, 102 - positioning boss, 103 - positioning pin, 104 - fixing hole; 200 - hub, 201 - bending part, 202 - insertion hole, 203 - positioning hole, 204 - positioning groove, 205 - assembly hole; 300 - connection shaft, 301 - connection hole, 302 - limiting part, 303 - limiting hole; 400 - shaft core, 401 - through hole, 402 - clamping part, 403 - positioning protrusion; 500 - outer tire, 501 - sleeve hole, 502 - positioning groove; 600 - insertion pin shaft, 601 - guiding part, 602 - insertion part; 700 - elastic part. Detailed implementation manners

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the following further details the solution in conjunction with the accompanying drawings and embodiments.

[0036] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0037] In this embodiment, refer to Figures 1-7, A specific implementation of a Mecanum wheel includes a fixed shaft 100 and two hubs 200 paired and installed at both ends of the fixed shaft 100. A plurality of inclined rollers are connected between the two hubs. The plurality of rollers are detachably arranged in a circumferential array along the periphery of the fixed shaft 100. A plurality of bending parts 201 for paired installation of rollers are formed on the hub 200 by bending. The bending part 201 is provided with a through insertion hole 202. The roller includes a connecting shaft 300, a shaft core 400 and a tire 500. A connecting hole 301 communicating with the outside is formed in the connecting shaft 300. An insertion pin shaft 600 is arranged in the connecting hole 301. One end of the insertion pin shaft 600 passes through the connecting hole 301 and is exposed at one end of the connecting shaft 300. An elastic member 700 for driving the insertion pin shaft 600 to continuously expose at the end of the connecting shaft 300 is arranged in the connecting hole 301. The end of the insertion pin shaft 600 away from the elastic member 700 is clamped and paired with the insertion hole 202 by the elastic force of the elastic member 700. A through hole 401 is formed in the shaft core 400 in a conductive setting. The connecting shaft 300 is coaxially paired and inserted with the through hole 401. The outer side of the shaft core 400 is clamped and connected with the tire 500 through a clamping structure. A connecting structure for pairing the shaft core 400 and clamping and pairing with the clamping structure is formed inside the tire 500;

[0038] When the insertion pin shaft 600 is pressed, the elastic member 700 is compressed, causing the insertion pin shaft 600 to retract axially along the connecting hole 301, and the roller can be quickly disassembled from the hub 200. On the contrary, by pressing the insertion pin shaft 600 to contract axially along the connecting hole 301, the insertion pin shaft 600 is coaxially paired with the insertion hole 202. When the pressing on the insertion pin shaft 600 is released, the elastic member 700 applies a reset elastic force to the insertion pin shaft 600 and makes the insertion pin shaft 600 dock with the insertion hole 202, and the insertion pin shaft 600 can be quickly paired and inserted between the two hubs 200.

[0039] In some embodiments, the detachable roller structure allows users to flexibly configure rollers of different specifications according to actual working conditions (such as ground friction coefficient, load weight, etc.). When it is necessary to adapt to special terrains, rollers with specific tread patterns or materials can be quickly replaced to achieve an efficient match between the equipment performance and the usage scenario.

[0040] Refer to Figure 4 , An installation hole 101 for connecting a drive shaft is formed inside the fixed shaft 100. Raised positioning bosses 102 are formed at both ends of the fixed shaft 100. The hub 200 is clamped and paired with the positioning boss 102 through a positioning hole 203. A positioning pin 103 is formed on the positioning boss 102. A positioning groove 204 for pairing with the positioning pin 103 is formed on the inner wall of the positioning hole 203.

[0041] Through the clamping fit between the positioning boss 102 and the positioning hole 203, and the precise alignment between the positioning pin 103 and the positioning groove 204, the rapid positioning and connection of the hub 200 and the fixed shaft 100 are achieved, avoiding the repeated adjustment caused by inaccurate alignment in traditional assembly and significantly shortening the assembly time. At the same time, this structure facilitates the disassembly of the hub 200 for maintenance or replacement, solves the problem of cumbersome disassembly and assembly of the roller and the hub 200 in the prior art, and reduces the downtime and maintenance cost.

[0042] In the specific implementation process, compared with the relatively difficult assembly of the roller to the hub 200 in the prior art, in this solution, the hub 200 can be pre-installed on the fixed shaft 100, so that the roller can be conveniently installed with the hub 200 through the telescopic movement of the insertion pin shaft 600.

[0043] Refer to Figure 5 and Figure 6 As shown in and, a limiting portion 302 is formed at the end of the connecting shaft 300. A limiting hole 303 communicating with the connecting hole 301 is formed in the limiting portion 302. A guiding portion 601 and a plugging portion 602 are formed on the insertion pin shaft 600. The guiding portion 601 is placed in the connecting hole 301, and the guiding portion 601 can slide along the axial direction of the connecting hole 301. The plugging portion 602 extends outside the connecting shaft 300 through the limiting hole 303, so that the telescopic movement of the plugging portion 602 can be driven by the sliding of the guiding portion 601 along the connecting hole 301.

[0044] The guiding portion 601 of the insertion pin shaft 600 can slide along the axial direction of the connecting hole 301, and the movement range is limited by the limiting hole 303, ensuring that the plugging portion 602 only retracts when pressed. This design makes the alignment operation of the insertion pin shaft 600 and the plugging hole 202 more intuitive and convenient, and rapid disassembly and assembly can be achieved without complex tools, improving the maintenance efficiency.

[0045] In the specific implementation process, the connecting shaft 300 is injection-molded or a metal pipe. The inner diameter of the limiting hole 303 is smaller than the inner diameter of the connecting hole 301. The setting of the limiting portion 302 prevents the insertion pin shaft 600 from being directly pushed out and disengaged from the connecting hole 301, and the plugging portion 602 passes through the limiting hole 303 and is exposed at the end of the connecting shaft 300.

[0046] In some embodiments, the clamping connection design enables the disassembly and assembly of the roller without the aid of special tools. The operator only needs to press to complete the disassembly or installation operation, which is applicable to different application scenarios, such as field emergency repair or scenarios operated by non-professional personnel, significantly improving the emergency maintenance ability of the equipment.

[0047] Refer to Figure 5 and Figure 6, the elastic member 700 is built into the connection hole 301. One end of the elastic member 700 abuts against the limiting portion 302. Through the elastic force, the limiting portion 302 drives the insertion portion 602 to continuously expose outside the connection hole 301.

[0048] Through the elastic force, the insertion portion 602 of the elastic member 700 always remains in the extended state, ensuring the connection stability between the roller and the hub 200 and reducing accidental detachment caused by vibration or load. At the same time, the reverse elastic force generated when the insertion pin shaft 600 is pressed compresses the elastic member 700, which can assist the insertion portion 602 to reset, further simplifying the installation process and improving the convenience of disassembly and assembly.

[0049] Specifically, the elastic member 700 is composed of a spring. As a standardized elastic component, the spring has the characteristics of low cost, high reliability, and long service life, and can provide stable elastic force output for a long time to ensure the reliable clamping between the insertion pin shaft 600 and the insertion hole 202.

[0050] In the specific implementation process, the spring provides elastic force for the insertion pin shaft 600 to continuously expose, enabling it to enhance the clamping pairing with the insertion hole 202 and improving the connection stability and reliability.

[0051] Refer to Figure 5 and Figure 6 , two insertion pin shafts 600 are provided, and the two insertion pin shafts 600 are respectively arranged at both ends of the connection shaft 300. Both ends of the elastic member 700 abut against the ends of the two insertion pin shafts 600 respectively, so that the elastic member 700 can drive the insertion portions 602 of the two insertion pin shafts 600 to expose at the ends of the connection shaft 300.

[0052] By arranging the insertion pin shafts 600 at both ends of the connection shaft 300 and using the elastic member 700 to drive the insertion portions 602 at both ends simultaneously, synchronous fixation of the roller and the hubs 200 on both sides is achieved. This design enhances the symmetry and stability of the connection and avoids the problem of uneven load caused by unilateral fixation. At the same time, pressing any one of the insertion pin shafts 600 can trigger disassembly, providing double operation convenience.

[0053] In the specific implementation process, one or two insertion pin shafts 600 can be provided. Specifically, two insertion pin shafts 600 are provided in this embodiment, and the two insertion pin shafts 600 are in contact with one end of the elastic member 700, so that both insertion pin shafts 600 can expand and contract, thereby improving the convenience of connecting with the hub 200.

[0054] Refer to Figure 5 and Figure 7The connecting shaft 300 is paired and connected with the through hole 401 of the shaft core 400. The clamping structure includes a clamping part 402 and a plurality of positioning protrusions 403. There are two clamping parts 402, and the two clamping parts 402 are respectively formed at both ends of the shaft core 400, so as to form a clamping gap for inserting the outer tire 500 between the two clamping parts 402. The positioning protrusions 403 are arranged along the outer surface of the shaft core 400. A through sleeve hole 501 is formed inside the outer tire 500. The connecting structure is composed of a plurality of positioning grooves 502, and the positioning grooves 502 are arranged on the inner wall of the sleeve hole 501. The outer tire 500 is paired and sleeved with the shaft core 400 through the sleeve hole 501, and is paired and connected with the positioning protrusions 403 through the positioning grooves 502.

[0055] The tight fit between the clamping gap formed by the clamping part 402 and the sleeve hole 501 of the outer tire 500, combined with the axial limit of the positioning protrusion 403 and the positioning groove 502, ensures the firm connection between the outer tire 500 and the shaft core 400, and prevents the outer tire 500 from axially moving or circumferentially sliding during use. This structure simplifies the installation process of the outer tire 500 and improves the overall durability and running stability of the roller. The shaft core 400 is arranged in an "I" shape.

[0056] In the specific implementation process, the outer tire 500 is made of plastic material. The outer tire 500 is sleeved in the clamping gap of the shaft core 400 through the sleeve hole 501. At the same time, through the clamping pairing of the positioning protrusion 403 and the positioning groove 502, the firmness and stability of the connection between the outer tire 500 and the shaft core 400 are further ensured.

[0057] The bent parts 201 on the two hubs 200 are arranged obliquely opposite to each other, so that the roller is installed at a 45-degree angle.

[0058] A fixing hole 104 is opened on the end face of the fixed shaft 100, and an assembly hole 205 paired with the fixing hole 104 is opened on the hub 200. The hub 200 is connected to the fixing hole 104 through a bolt passing through the assembly hole 205.

[0059] By passing a bolt through the assembly hole 205 and connecting it to the fixing hole 104, the detachable fixation of the hub 200 and the fixed shaft 100 is achieved. This structure prevents the hub 200 from loosening during use, and at the same time facilitates the quick disassembly of the hub 200 for internal maintenance or roller replacement, solving the problem of complex maintenance in the prior art.

[0060] Exemplarily, the Mecanum wheel of this solution can be applied to model cars, rolling conveyor lines or other fields.

[0061] The specific installation and disassembly process in this embodiment is as follows:

[0062] Installation state: The elastic member 700 is built into the connection hole 301, and the two insertion pin shafts 600 respectively abut against one end of the elastic member 700 through the limiting portion 302, so that the two insertion pin shafts 600 pass through the limiting hole 303 through the insertion portion 602 and are exposed at one end of the connection shaft 300. The shaft core 400 is paired and connected with the connection shaft 300 through the through hole 401, and the outer tire 500 is installed in the clamping gap of the shaft core 400 through the sleeve hole 501, thereby forming a roller, that is, a roller structure;

[0063] The positioning hole 203 of the wheel hub 200 is clamped and paired with the positioning boss 102 of the fixed shaft 100, and bolts are used to pass through the assembly hole 205 and connect with the fixing hole 104. The two wheel hubs 200 are respectively installed at both ends of the fixed shaft 100. At this time, the assembled roller is installed between the two wheel hubs 200. Specifically, by pressing one end of the insertion pin shaft 600 and moving it into the insertion hole 202, after the insertion portion 602 is paired with the insertion hole 202, the insertion portion 602 loses the pressing force, and the elastic reset of the elastic member 700 is that the insertion portion 602 penetrates into the insertion hole 202, thereby completing the rapid installation of the roller. Multiple rollers are arranged along the periphery of the fixed shaft 100 in sequence, and each roller can be independently disassembled and assembled, effectively solving the operation problem of the traditional Mecanum wheel that requires the whole roller group to be disassembled. When a single roller is damaged or needs to be replaced, there is no need to damage the connection relationship of other intact components, significantly reducing the maintenance complexity and improving the convenience and practicality of installation;

[0064] Disassembly state: By inserting a tool into the insertion hole 202 to apply a pressing force to the insertion portion 602, the elastic member 700 is compressed, so that the insertion portion 602 of the insertion pin shaft 600 retracts and disengages from the insertion hole 202, thereby quickly completing the disassembly of the roller on the wheel hub 200. After one insertion pin shaft 600 disengages from the insertion hole 202, it can be separated from the two wheel hubs 200. The overall structure is simple, facilitating disassembly, maintenance or replacement.

[0065] This solution can achieve the rapid docking or separation of the roller and the insertion hole 202, enhance the rapid installation and disassembly efficiency of the roller, and improve the convenience of use.

[0066] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention is disclosed above in a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the technical scope of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent change equivalent embodiments, but as long as it does not depart from the technical content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical means of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A Mecanum wheel, comprising a fixed shaft and two hubs paired and installed at both ends of the fixed shaft, with a plurality of inclined rollers connected between the two hubs, and the plurality of rollers are detachably arranged in a circumferential array along the periphery of the fixed shaft, characterized in that: A plurality of bending portions for mating and installing rollers are formed on the hub by bending. The bending portions are provided with through insertion holes. The roller includes a connecting shaft, a shaft core and an outer tire. A connecting hole communicating with the outside is formed in the connecting shaft. An insertion pin shaft is arranged in the connecting hole. One end of the insertion pin shaft passes through the connecting hole and is exposed at one end of the connecting shaft. An elastic member for driving the insertion pin shaft to continuously expose at the end of the connecting shaft is arranged in the connecting hole. The end of the insertion pin shaft away from the elastic member acts on the insertion hole through the elastic force of the elastic member for clamping and mating. A through hole is formed in the shaft core in a through manner. The connecting shaft is coaxially mated and inserted with the through hole. The outer side surface of the shaft core is clamped and connected with the outer tire through a clamping structure. A connecting structure for mating with the shaft core and clamping and mating with the clamping structure is formed inside the outer tire. When the insertion pin shaft is pressed, the elastic member is compressed, causing the insertion pin shaft to retract axially along the connecting hole, and the roller can be quickly disassembled from the hub. On the contrary, by pressing the insertion pin shaft to contract axially along the connecting hole, the insertion pin shaft is coaxially mated with the insertion hole. When the pressing on the insertion pin shaft is released, the elastic member applies a reset elastic force to the insertion pin shaft and makes the insertion pin shaft dock with the insertion hole, and the insertion pin shaft can be quickly mated and inserted between the two hubs.

2. The Mecanum wheel according to claim 1, wherein: An installation hole for connecting the drive shaft is formed inside the fixed shaft. Raised positioning bosses are formed at both ends of the fixed shaft. The hub is clamped and mated with the positioning bosses through positioning holes. A positioning pin is formed on the positioning boss, and a positioning groove for mating with the positioning pin is formed on the inner wall of the positioning hole.

3. The Mecanum wheel according to claim 1, wherein: A limiting portion is formed at the end of the connecting shaft. A limiting hole communicating with the connecting hole is formed in the limiting portion. A guiding portion and a plugging portion are formed on the insertion pin shaft. The guiding portion is placed inside the connecting hole, and the guiding portion can slide axially along the connecting hole. The plugging portion passes through the limiting hole and extends to the outside of the connecting shaft, so that the sliding of the guiding portion along the connecting hole drives the plugging portion to perform telescopic movement.

4. The Mecanum wheel according to claim 3, wherein: The elastic member is placed inside the connecting hole. One end of the elastic member abuts against the limiting portion. The elastic member drives the plugging portion to continuously expose outside the connecting hole through the elastic force.

5. The Mecanum wheel according to claim 3, wherein: The elastic member is composed of a spring.

6. A Mecanum wheel according to any one of claims 3-5, characterized in that: Two insertion pin shafts are provided, and the two insertion pin shafts are respectively arranged at both ends of the connecting shaft. Both ends of the elastic member respectively abut against the ends of the two insertion pin shafts, so that the elastic member can drive the plugging portions of the two insertion pin shafts to expose at the ends of the connecting shaft.

7. A Mecanum wheel according to any one of claims 1-5, characterized in that: The connecting shaft is paired and connected with the through hole of the shaft core. The clamping structure includes a clamping portion and a plurality of positioning protrusions. Two clamping portions are provided, and the two clamping portions are respectively formed at both ends of the shaft core, so that a clamping gap for inserting the outer tire is formed between the two clamping portions. The positioning protrusions are arranged along the outer surface of the shaft core. A through sleeve hole is formed inside the outer tire. The connecting structure is composed of a plurality of positioning grooves. The positioning grooves are arranged on the inner wall of the sleeve hole. The outer tire is paired and sleeved with the shaft core through the sleeve hole, and is paired and connected with the positioning protrusions through the positioning grooves.

8. The Mecanum wheel according to claim 7, characterized in that: The shaft core is arranged in an "I" shape.

9. A Mecanum wheel according to any one of claims 1-5, characterized in that: The bending portions on the two hubs are arranged obliquely opposite to each other, so that the roller is installed at an angle of 45 degrees.

10. A Mecanum wheel according to any one of claims 1-5, characterized in that: A fixing hole is formed in the end face of the fixed shaft, and an assembly hole paired with the fixing hole is formed in the hub. A bolt passes through the assembly hole on the hub and is connected to the fixing hole.

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