Direct drive mechanism based on Mecanum wheels

Abstract

The utility model relates to a Mecanum wheel-based direct drive mechanism, which comprises a frame body, two mounting plates are movably mounted at the bottom of the frame body, mounting mechanisms are arranged between the two mounting plates and the frame body, a motor mounting frame is fixedly mounted on the right side of the mounting plate on the right side, and a motor is mounted on the motor mounting frame. A direct-drive motor is fixedly mounted on the right side of the motor mounting frame, a rotating shaft is fixedly mounted at an output shaft of the direct-drive motor, and a Mecanum wheel body is fixedly mounted on the outer surface of the rotating shaft; the mounting mechanism comprises shells, and the front side and the rear side of the frame body are each fixedly provided with two shells. According to the direct drive mechanism based on the Mecanum wheel, the direct drive motor is adopted to directly drive the Mecanum wheel body to rotate, the middle transmission link in a traditional drive mechanism is omitted, the structure is simpler, due to the fact that the structure is simple, fault points and maintenance difficulty are reduced, cost is reduced, and meanwhile equipment maintenance is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a direct drive mechanism based on a Mecanum wheel. Background Art

[0002] With the continuous development of automation technology, AGV, automated mobile robots and other equipment have been widely used in industrial production, logistics and transportation. Such equipment needs to have the ability to move omnidirectionally so that it can operate flexibly in various complex environments. Mecanum wheels, as a wheel that can achieve omnidirectional movement, have a compact structure and flexible movement, and are widely used in such equipment.

[0003] However, the existing mobile mechanisms based on Mecanum wheels mostly adopt indirect drive mode, which requires a transmission device such as a reduction mechanism to drive the Mecanum wheel to rotate. These transmission devices include gear boxes, belts, chains, etc., which convert the high speed and low torque of the motor into the low speed and high torque required by the wheel. This conversion process increases the complexity of the system, which not only makes the structure bloated, but also increases the difficulty and cost of maintenance. Therefore, a direct drive mechanism based on the Mecanum wheel is proposed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a direct-drive mechanism based on a Mecanum wheel, which has the advantages of simple structure and convenient maintenance, and solves the problem that the existing mobile mechanisms based on Mecanum wheels mostly adopt an indirect drive method. This conversion process increases the complexity of the system, which not only makes the structure bloated, but also increases the difficulty and cost of maintenance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a direct drive mechanism based on a Mecanum wheel, comprising a frame, two mounting plates are movably mounted on the bottom of the frame, mounting mechanisms are arranged between the two mounting plates and the frame, a motor mounting frame is fixedly mounted on the right side of the right mounting plate, a direct drive motor is fixedly mounted on the right side of the motor mounting frame, a rotating shaft is fixedly mounted on the output shaft of the direct drive motor, and a Mecanum wheel body is fixedly mounted on the outer surface of the rotating shaft;

[0006] The mounting mechanism comprises a shell, two shells are fixedly mounted on the front and rear sides of the frame, screw rods extending to the inner bottom wall of the shells are rotatably mounted on the tops of the four shells, screw sleeves are threadedly connected to the outer surfaces of the four screw rods, moving blocks are fixedly mounted on the side walls of the four screw sleeves, vertical rods located inside the moving blocks are fixedly mounted between the inner top walls and the inner bottom walls of the four shells, connecting rods are rotatably mounted on the sides of the four screw sleeves away from the vertical rods, and positioning rods are movably mounted on the ends of the four connecting rods away from the screw sleeves.

[0007] Furthermore, the frame is concave in shape, and docking grooves are provided at both ends of the bottom of the frame. Docking blocks matching the docking grooves are fixedly installed on the tops of the two mounting plates, and positioning holes matching the positioning rods are provided on the front and rear sides of the two docking blocks.

[0008] Furthermore, the rotating shaft is rotatably mounted between the two mounting plates.

[0009] Furthermore, the four moving blocks are all slidably connected to the vertical rod.

[0010] Furthermore, one end of the four connecting rods is rotatably mounted on the threaded sleeve, and the other end of the four connecting rods is rotatably mounted on the positioning rod.

[0011] Furthermore, a slide groove is provided on the inner top wall of the four shells, and a sliding block slidably mounted with the slide groove is fixedly mounted on the top of the four positioning rods.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. The direct drive mechanism based on the Mecanum wheel adopts a direct drive motor to directly drive the rotation of the Mecanum wheel body, which reduces the intermediate transmission links in the traditional drive mechanism and makes the structure simpler. Due to the simple structure, the failure points and maintenance difficulty are reduced, the cost is reduced, and the maintenance of the equipment is more convenient.

[0014] 2. The direct drive mechanism based on the Mecanum wheel is provided with a mounting mechanism so that the frame and the mounting plate can be disassembled, thereby facilitating maintenance work on the Mecanum wheel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a left side view of the frame and the mounting plate of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified view of the structure in the middle.

[0018] In the figure: 1, frame; 2, mounting plate; 3, mounting mechanism; 301, housing; 302, screw; 303, screw sleeve; 304, moving block; 305, vertical rod; 306, connecting rod; 307, positioning rod; 4, motor mounting frame; 5, direct drive motor; 6, rotating shaft; 7, Mecanum wheel body. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 In this embodiment, a direct drive mechanism based on a Mecanum wheel includes a frame 1, two mounting plates 2 are movably installed at the bottom of the frame 1, and a mounting mechanism 3 is arranged between the two mounting plates 2 and the frame 1, a motor mounting frame 4 is fixedly installed on the right side of the right mounting plate 2, a direct drive motor 5 is fixedly installed on the right side of the motor mounting frame 4, a rotating shaft 6 is fixedly installed at the output shaft of the direct drive motor 5, and a Mecanum wheel body 7 is fixedly installed on the outer surface of the rotating shaft 6.

[0021] In practical applications, a suitable Mecanum wheel body 7 and direct drive motor 5 can be selected according to the needs of the equipment. The frame 1 is fixed on the equipment, and the two mounting plates 2 can be removed from the frame 1 through the mounting mechanism 3 to achieve separation from the equipment. When the equipment needs to move, the control system sends a command to the direct drive motor 5, and the direct drive motor 5 drives the Mecanum wheel body 7 to rotate, thereby realizing the movement of the equipment. The structure is simple, maintenance is convenient, and cost is reduced.

[0022] The mounting mechanism 3 includes a shell 301, and two shells 301 are fixedly installed on the front and rear sides of the frame body 1. Screws 302 extending to the inner bottom wall of the shell 301 are rotatably installed on the top of the four shells 301, and screw sleeves 303 are threadedly connected to the outer surfaces of the four screws 302. Moving blocks 304 are fixedly installed on the side walls of the four screw sleeves 303. Vertical rods 305 located inside the moving blocks 304 are fixedly installed between the inner top walls and the inner bottom walls of the four shells 301. Connecting rods 306 are rotatably installed on the sides of the four screw sleeves 303 away from the vertical rods 305, and positioning rods 307 are movably installed on the ends of the four connecting rods 306 away from the screw sleeves 303.

[0023] The frame 1 is concave in shape, and docking grooves are provided at both ends of the bottom of the frame 1. Docking blocks matching the docking grooves are fixedly installed on the tops of the two mounting plates 2. By setting the docking grooves and docking blocks, the two mounting plates 2 are facilitated to make a preliminary connection with the bottom of the frame 1, thereby facilitating the subsequent installation of the mechanism 3.

[0024] The four moving blocks 304 are all slidably connected to the vertical rod 305 to limit the rotation of the screw sleeve 303, so that when the screw rod 302 rotates, the screw sleeve 303 can move up and down.

[0025] One ends of the four connecting rods 306 are rotatably mounted on the threaded sleeve 303 , and the other ends of the four connecting rods 306 are rotatably mounted on the positioning rod 307 .

[0026] Slide grooves are provided on the inner top walls of the four housings 301 , and sliding blocks slidably mounted in the slide grooves are fixedly mounted on the tops of the four positioning rods 307 .

[0027] Positioning holes matching the positioning rods 307 are provided on both the front and rear sides of the two docking blocks.

[0028] By rotating the connecting rod 306 and under the action of the slide groove and the slider, the connecting rod 306 can drive the positioning rod 307 to insert into or withdraw from the positioning hole, so as to realize the installation and disassembly between the frame 1 and the mounting plate 2, so that the Mecanum wheel body 7 can be disassembled from the equipment, which is convenient for maintenance work.

[0029] When implementing, follow these steps:

[0030] 1) When the Mecanum wheel body 7 needs to be maintained, the four screw rods 302 are first rotated, and the four screw rods 302 respectively drive the screw sleeves 303 to move downward;

[0031] 2) Then the four screw sleeves 303 drive the connecting rod 306 to rotate respectively, and under the sliding cooperation of the slider and the slide groove, the movement of the positioning rod 307 is limited, so that the positioning rod 307 moves horizontally and smoothly toward the connecting rod 306;

[0032] 3) thereby making the four positioning rods 307 withdraw from the interior of the four positioning holes;

[0033] 4) Finally, the frame 1 is separated from the two mounting plates 2, and the Mecanum wheel body 7 is removed from the device.

[0034] In summary, the direct drive mechanism based on the Mecanum wheel reduces the intermediate transmission links in the traditional drive mechanism by adopting the direct drive motor 5 to directly drive the Mecanum wheel body 7 to rotate, making the structure simpler. Due to the simple structure, the failure points and maintenance difficulty are reduced, the cost is reduced, and the maintenance of the equipment is more convenient.

[0035] Furthermore, by providing the mounting mechanism 3, the frame 1 and the mounting plate 2 can be disassembled, thereby facilitating maintenance work on the Mecanum wheel body 7.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A direct drive mechanism based on a Mecanum wheel, comprising a frame (1), characterized in that: Two mounting plates (2) are movably mounted at the bottom of the frame (1), and mounting mechanisms (3) are arranged between the two mounting plates (2) and the frame (1); a motor mounting frame (4) is fixedly mounted on the right side of the right mounting plate (2), and a direct drive motor (5) is fixedly mounted on the right side of the motor mounting frame (4); a rotating shaft (6) is fixedly mounted on the output shaft of the direct drive motor (5), and a Mecanum wheel body (7) is fixedly mounted on the outer surface of the rotating shaft (6); The mounting mechanism (3) comprises a shell (301), two shells (301) are fixedly mounted on both the front and rear sides of the frame (1), screw rods (302) extending to the inner bottom wall of the shell (301) are rotatably mounted on the tops of the four shells (301), screw sleeves (303) are threadedly connected to the outer surfaces of the four screw rods (302), moving blocks (304) are fixedly mounted on the side walls of the four screw sleeves (303), vertical rods (305) located inside the moving blocks (304) are fixedly mounted between the inner top walls and the inner bottom walls of the four shells (301), connecting rods (306) are rotatably mounted on the sides of the four screw sleeves (303) away from the vertical rods (305), and positioning rods (307) are movably mounted on the ends of the four connecting rods (306) away from the screw sleeves (303).

2. A direct drive mechanism based on a Mecanum wheel according to claim 1, characterized in that: The frame (1) is in a concave shape, and docking grooves are provided at both ends of the bottom of the frame (1). Docking blocks that match the docking grooves are fixedly installed on the tops of the two mounting plates (2), and positioning holes that match the positioning rods (307) are provided on the front and rear sides of the two docking blocks.

3. The direct drive mechanism based on a Mecanum wheel according to claim 1, characterized in that: The rotating shaft (6) is rotatably mounted between the two mounting plates (2).

4. The direct drive mechanism based on a Mecanum wheel according to claim 1, characterized in that: The four movable blocks (304) are all slidably connected to the vertical rod (305).

5. The direct drive mechanism based on a Mecanum wheel according to claim 1, characterized in that: One end of the four connecting rods (306) is rotatably mounted on the screw sleeve (303), and the other end of the four connecting rods (306) is rotatably mounted on the positioning rod (307).

6. A direct drive mechanism based on a Mecanum wheel according to claim 1, characterized in that: The inner top walls of the four shells (301) are each provided with a sliding groove, and the tops of the four positioning rods (307) are each fixedly provided with a sliding block slidably mounted with the sliding groove.

Images