Transportation platform capable of crossing terrains

Abstract

The invention belongs to the technical field of warehouse logistics facilities, and particularly discloses a terrain-spanning transportation platform which comprises a supporting plate, two opposite sides of the supporting plate are each provided with two Mecanum wheels, the two sides where the Mecanum wheels are located are set to be the left side and the right side, a center shaft is arranged in the center of each Mecanum wheel in a penetrating mode, and the Mecanum wheels are arranged on the left side and the right side in a penetrating mode. The center shaft extends into the supporting plate, the end, penetrating through the supporting plate, of the center shaft is sequentially connected with guide wheels and a roller in a sleeved mode, the end of the center shaft is connected with one end of a coupler, the other end of the coupler is connected with a motor, the inner side of each guide wheel is provided with a containing groove, and the roller is connected with the containing groove in a sleeved mode. And a plurality of springs are fixedly arranged in the containing groove, a ball is connected in each spring in a sleeved mode, the balls can roll while being fixed in the springs, and the device solves the problem that at present, a platform and a rail are difficult to switch flexibly in rail transportation.

Description

Technical Field

[0001] The present invention belongs to the technical field of warehousing and logistics facilities, and in particular relates to a transportation platform capable of crossing terrain. Background Art

[0002] As a core link in the logistics chain, warehouse management's efficiency and intelligence play a decisive role in the overall operational effectiveness of the supply chain. In modern warehousing scenarios, the efficiency and accuracy of operations such as cargo storage, sorting, and handling are increasingly critical. Especially in large warehouses and logistics centers, the rapid flow and precise positioning of goods are crucial for improving storage space utilization, reducing operating costs, and enhancing customer satisfaction.

[0003] Some warehouses require rail-based transportation, but existing transport platforms are extremely inconvenient when switching from a flat surface to rail. For example, common automated guided vehicles (AGVs) mostly utilize traditional wheel-driven structures, which operate smoothly on flat surfaces. However, in scenarios involving switching between flat and rail-based surfaces, the lack of an effective switching mechanism and a structural design suitable for rail operation makes it difficult to smoothly complete the transition. This significantly limits the equipment's operating range and overall efficiency, making it impossible to meet the diverse transportation needs of warehouses. Summary of the Invention

[0004] The purpose of the present invention is to provide a transportation platform that can cross terrain in view of the existing devices, so as to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a transport platform capable of crossing terrain, comprising a pallet, two Mecanum wheels being arranged on opposite sides of the pallet, and the two sides where the Mecanum wheels are located are set as the left and right sides;

[0006] Each of the Mecanum wheels has a central shaft extending toward the interior of the support plate. One end of the central shaft passing through the support plate is sleeved with a guide wheel and a roller. One end of the central shaft is connected to one end of a coupling, and the other end of the coupling is connected to a motor.

[0007] A receiving groove is provided on the inner side of each guide wheel, and a plurality of springs are fixedly installed inside the receiving groove. A ball is sleeved inside each spring, and the ball can roll while being fixed inside the spring. A lubricant cavity is also provided inside the guide wheel, and a conical plug is provided between the lubricant cavity and each receiving groove.

[0008] The present invention further describes that the lower portion of the Mecanum wheel is a running platform, one side of the running platform is the ground, and two running tracks are arranged on the ground.

[0009] The present invention further describes that the upper surface of the running track is flush with the lower surface of the roller, and the inner distance between the two running tracks is smaller than the distance between the two rollers, the outer distance between the two running tracks is equal to the inner distance between the springs on both sides, and the inner sides of the adjacent guide wheels are close to the outer sides of the rollers.

[0010] The present invention further describes that the conical plug is a combination of a frustum and a cylinder, and the larger plane of the frustum is connected to the cylinder, and the smaller plane of the frustum is fixedly connected to the ball, the frustum passes through the guide wheel to the inside of the lubricant cavity, the cylinder is located inside the lubricant cavity, and a conical hole adapted to the conical plug is provided on the guide wheel between the lubricant cavity and the accommodating groove.

[0011] The present invention further describes that a receiving cavity is provided below the support plate, and the guide wheel, the roller, the coupling and the motor are all located in the receiving cavity.

[0012] The present invention further states that a shock absorbing device is provided inside the accommodating cavity near each of the guide wheels.

[0013] The present invention further describes that the electric motor is fixedly mounted inside the motor sleeve, and the motor sleeve is fixedly mounted above the accommodating cavity.

[0014] The present invention further describes a method for achieving terrain crossing by a transport platform capable of crossing terrain. When the transport platform is on the operating platform, it is in platform mode. In this mode, the motor drives the central shaft to rotate via the coupling. The rotation of the central shaft drives the Mecanum wheel to rotate, thereby enabling the transport platform to move on the operating platform.

[0015] When it is necessary to switch to the operating track, the Mecanum wheel drives the transport platform to switch in the direction of the track until all the rollers roll onto the operating track. At the same time, the balls of the guide wheel contact the side wall of the operating track for positioning. When the balls contact the operating track, they roll relative to the operating track. When the transport platform deviates, the operating track squeezes the balls on one side to move into the receiving groove. The balls drive the conical plug to squeeze the spring to shorten, and the conical plug breaks away from the conical hole that was originally tightly fitted therewith. The lubricant chamber is connected to each of the receiving grooves. The guide wheel generates centrifugal force when rotating, and the lubricant in the lubricant chamber flows into the receiving groove through the hole of the conical plug.

[0016] When the transport platform is located on the operating track, it is in track mode. In this mode, the roller is in contact with the upper surface of the operating track and bears the load. The motor drives the central shaft to rotate through the coupling, and the central shaft drives the roller to rotate, and the roller drives the transport platform to move on the operating track.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) By sequentially sleeved guide wheels and rollers on the central axis of each Mecanum wheel, and the motor drives the central axis to rotate through the coupling, and then drives the Mecanum wheel and rollers, the transport platform can be seamlessly switched between flat road and rail road. When the transport platform is on a flat road, the Mecanum wheel acts as a driving wheel to drive the platform to move. When it switches to the rail road, the roller fits in with the upper surface of the rail and bears the load. The motor drives the roller to rotate, so that the platform moves on the rail, while the Mecanum wheel is in an idling state and the guide wheel plays a guiding role. This design enables the transport platform to adapt to the environment where flat road and rail coexist in the storage room, thereby improving the versatility and adaptability of the transport platform.

[0019] (2) By opening a receiving groove on the inner side of the guide wheel and arranging a spring with a ball inside the receiving groove, and by opening a lubricant cavity inside the guide wheel and arranging a conical plug, intelligent lubrication between the guide wheel and the running track is achieved. When the ball is squeezed by an external force, it drives the conical plug to move, so that the lubricant cavity and the receiving groove are connected, and the lubricant flows into the receiving groove, thereby reducing the friction between the guide wheel and the running track, reducing the wear of the wheel, extending the service life of the transport platform, and reducing the maintenance cost;

[0020] (3) By adopting the overall modular structure of the drive shaft, only one motor in the entire drive shaft drives the Mecanum wheel and the roller at the same time, which reduces the mass of the vehicle, facilitates the subsequent installation of any other devices and improves the load-bearing mass of the vehicle. At the same time, it effectively saves resources, reduces the use of motors, greatly reduces costs, improves the vehicle's no-load speed and vehicle life, and improves the cost-effectiveness and market competitiveness of the transportation platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 is a schematic side cross-sectional view of an embodiment of the present invention;

[0024] Figure 3 is a cross-sectional view of a motor driving portion of an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a motor drive portion of an embodiment of the present invention;

[0026] Figure 5 is an enlarged view of region A of an embodiment of the present invention;

[0027] Figure 6 is a partial cross-sectional view of a tapered plug according to an embodiment of the present invention;

[0028] In the figure: 1. support plate; 2. Mecanum wheel; 3. central axis; 4. shock absorber; 5. guide wheel; 51. receiving groove; 52. ball; 53. lubricant chamber; 54. conical plug; 55. spring; 6. roller; 7. coupling; 8. motor; 9. motor sleeve; 10. operating platform; 11. receiving chamber; 12. ground; 13. operating track. DETAILED DESCRIPTION

[0029] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0030] refer to Figures 1 to 6 , an embodiment of the present invention provides a transport platform that can cross terrain, such as Figure 1As shown, a terrain-crossing transport platform includes a pallet 1 with two Mecanum wheels 2 disposed on opposite sides of the pallet 1, with the two sides where the Mecanum wheels 2 are located being referred to as the left and right sides. The pallet 1 serves as the main structure of the transport platform, carrying and supporting other components and the transported cargo. The Mecanum wheels 2 facilitate omnidirectional mobility, enabling the transport platform to perform complex movements within a plane, including forward, backward, lateral movement, and rotation in place.

[0031] like Figure 3 As shown, each Mecanum wheel 2 is provided with a central shaft 3 extending into the interior of the pallet 1. A guide wheel 5 and a roller 6 are sequentially connected to one end of the central shaft 3 passing through the pallet 1. One end of the central shaft 3 is connected to one end of a coupling 7, and the other end of the coupling 7 is connected to a motor 8. The motor 8, as a power element, drives the central shaft 3 to rotate through the coupling 7, thereby driving the Mecanum wheels 2 and the rollers 6 to achieve movement of the entire transport platform.

[0032] like Figure 4 and Figure 5 As shown, each guide wheel 5 has a receiving groove 51 formed inside, and a plurality of springs 55 are fixedly installed inside the receiving groove 51. A ball 52 is sleeved inside each spring 55, and the ball 52 can roll while being fixed inside the spring 55. A lubricant cavity 53 is also formed inside the guide wheel 5, and a conical plug 54 is provided between the lubricant cavity 53 and each receiving groove 51. Lubricant is stored inside the lubricant cavity 53.

[0033] In certain preferred embodiments, Figure 1 and Figure 2 As shown, below the Mecanum wheels 2 is a running platform 10, one side of which is a floor 12, on which two running tracks 13 are arranged. The running platform 10 is a flat moving surface, and when the transport platform moves on the running platform 10, the Mecanum wheels 2 serve as driving wheels. The running tracks 13 are fixed tracks on the uneven floor 12, allowing the transport platform to travel along specific tracks on the floor 12 in the storage room.

[0034] In certain preferred embodiments, the upper surface of the operating rail 13 is flush with the lower surface of the roller 6, and the inner spacing between the two operating rails 13 is smaller than the spacing between the two rollers 6, the outer spacing between the two operating rails 13 is equal to the inner spacing of the springs 55 on both sides, and the inner sides of the adjacent guide wheels 5 are close to the outer sides of the roller 6.

[0035] In certain preferred embodiments, Figure 6 As shown, the conical plug 54 is a combination of a frustum and a cylinder, and the larger plane of the frustum is connected to the cylinder, and the smaller plane of the frustum is fixedly connected to the ball 52. The frustum passes through the guide wheel 5 to the inside of the lubricant cavity 53, and the cylinder is located inside the lubricant cavity 53. A conical hole adapted to the conical plug 54 is provided on the guide wheel 5 between the lubricant cavity 53 and the accommodating groove 51.

[0036] When the spring 55 is not compressed, the truncated cone portion of the conical plug 54 fits tightly within the conical hole, isolating the lubricant chamber 53 from the receiving groove 51. When the ball 52 is squeezed by an external force, driving the conical plug 54 to move, the side of the guide wheel 5 abuts against the running track 13, continuing to guide and position the guide wheel. When the spring 55 is compressed, the conical plug 54 disengages from the conical hole and moves toward the lubricant chamber 53, connecting the lubricant chamber 53 with the receiving groove 51. Lubricant can flow into the receiving groove 51 through the channel formed by the movement of the conical plug 54, providing lubrication and reducing friction between the guide wheel 5 and the running track 13.

[0037] In certain preferred embodiments, Figure 2 As shown, a receiving cavity 11 is provided below the support plate 1 , and the guide wheel 5 , the roller 6 , the coupling 7 and the motor 8 are all located in the receiving cavity 11 .

[0038] In certain preferred embodiments, Figure 3 As shown, a shock absorbing device 4 is provided inside the accommodating cavity 11 near each guide wheel 5. The shock absorbing device 4 is used to reduce vibration and impact caused by uneven ground 12 or track vibration during the movement of the transport platform, thereby improving the stability of the transport platform.

[0039] In certain preferred embodiments, Figure 3 As shown, the motor 8 is fixedly mounted inside the motor housing 9 , and the motor housing 9 is fixedly mounted above the accommodating cavity 11 .

[0040] In some preferred embodiments, the motor 8 adjusts the speed difference between the Mecanum wheel 2 and the roller 6 through a frequency conversion controller.

[0041] In the above embodiment, when the transport platform is on the operating platform 10, it is in platform mode. In this mode, the motor 8 drives the central shaft 3 to rotate through the coupling 7. The rotation of the central shaft 3 drives the Mecanum wheel 2 to rotate. The rotation of the Mecanum wheel 2 drives the transport platform to move on the operating platform 10. At this time, the guide wheel 5 and the roller 6 are out of contact and are in an idling state.

[0042] When it is necessary to switch to the running track 13, the Mecanum wheel 2 drives the transport platform to switch in the track direction until all the rollers 6 roll onto the running track 13. At the same time, the balls 52 of the guide wheel 5 contact the side wall of the running track 13 for positioning. When the balls 52 contact the running track 13, they roll relative to the running track 13. When the transport platform deviates, the running track 13 squeezes the balls 52 on one side into the receiving groove 51. The balls 52 drive the tapered plug 54 to compress the spring 55, shortening the tapered plug 54. The tapered plug 54 disengages from the tapered hole with which it originally fits tightly, allowing the lubricant chamber 53 to communicate with each of the receiving grooves 51. Due to the centrifugal force generated by the rotation of the guide wheel 5, the lubricant in the lubricant chamber 53 flows through the hole of the tapered plug 54 into the receiving groove 51. The side of the guide wheel 5 abuts against the running track 13 for positioning, and the lubricant reduces the friction between the two.

[0043] When the transport platform is on the operating track 13, it is in track mode. In this mode, the roller 6 is in contact with the upper surface of the operating track 13 and bears the load. The motor 8 drives the central shaft 3 to rotate through the coupling 7. The rotation of the central shaft 3 drives the roller 6 to rotate. The rotation of the roller 6 drives the transport platform to move on the operating track 13. At this time, the Mecanum wheel 2 is disengaged and in an idling state, and the guide wheel 5 plays a guiding role.

[0044] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0045] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A transport platform capable of crossing terrain, comprising a pallet (1), characterized in that: Two Mecanum wheels (2) are arranged on opposite sides of the support plate (1), and the two sides where the Mecanum wheels (2) are located are defined as the left and right sides; A central shaft (3) is provided in the center of each Mecanum wheel (2), and the central shaft (3) extends toward the interior of the support plate (1). One end of the central shaft (3) passing through the support plate (1) is sleeved with a guide wheel (5) and a roller (6) in sequence. The end of the central shaft (3) is connected to one end of a coupling (7), and the other end of the coupling (7) is connected to a motor (8). Each guide wheel (5) is provided with a receiving groove (51) on its inner side. A plurality of springs (55) are fixedly provided inside the receiving groove (51). A ball (52) is sleeved inside each spring (55). The ball (52) can roll while being fixed inside the spring (55). A lubricant cavity (53) is also provided inside the guide wheel (5). A conical plug (54) is provided between the lubricant cavity (53) and each receiving groove (51).

2. A terrain-spanning transport platform according to claim 1, characterized in that: Below the Mecanum wheel (2) is a running platform (10), one side of the running platform (10) is a ground (12), and two running tracks (13) are arranged on the ground (12).

3. A terrain-spanning transport platform according to claim 2, characterized in that: The upper surface of the running track (13) is flush with the lower surface of the roller (6), and the inner spacing between the two running tracks (13) is smaller than the spacing between the two rollers (6). The outer spacing between the two running tracks (13) is equal to the inner spacing of the springs (55) on both sides, and the inner sides of the adjacent guide wheels (5) are close to the outer sides of the rollers (6).

4. A terrain-spanning transport platform according to claim 3, characterized in that: The conical plug (54) is a combination of a truncated cone and a cylinder, and the larger plane of the truncated cone is connected to the cylinder, and the smaller plane of the truncated cone is fixedly connected to the ball (52). The truncated cone passes through the guide wheel (5) to the inside of the lubricant cavity (53), and the cylinder is located inside the lubricant cavity (53). A conical hole adapted to the conical plug (54) is provided on the guide wheel (5) between the lubricant cavity (53) and the accommodating groove (51).

5. The terrain-spanning transport platform according to claim 4, characterized in that: An accommodating cavity (11) is provided below the support plate (1), and the guide wheel (5), the roller (6), the coupling (7) and the motor (8) are all located in the accommodating cavity (11).

6. The terrain-spanning transport platform according to claim 5, characterized in that: A shock absorbing device (4) is provided inside the accommodating cavity (11) at a position close to each guide wheel (5).

7. The terrain-spanning transport platform according to claim 6, characterized in that: The electric motor (8) is fixedly mounted inside the motor sleeve (9), and the motor sleeve (9) is fixedly mounted above the accommodating cavity (11).

8. The terrain-spanning transport platform according to claim 7, characterized in that: The motor (8) adjusts the speed difference between the Mecanum wheel (2) and the roller (6) through a frequency conversion controller.

9. A method for achieving terrain crossing by a terrain-crossing transport platform according to claims 1-8, characterized in that: When the transport platform is on the operating platform (10), it is in platform mode. In this mode, the motor (8) drives the central shaft (3) to rotate through the coupling (7), and the rotation of the central shaft (3) drives the Mecanum wheel (2) to rotate, thereby enabling the transport platform to move on the operating platform (10); When it is necessary to switch to the operating track (13), the Mecanum wheel (2) drives the transport platform to switch in the direction of the track until all the rollers (6) roll onto the operating track (13). At the same time, the balls (52) of the guide wheels (5) contact the side walls of the operating track (13) for positioning. When the balls (52) contact the operating track (13), they roll relative to the operating track (13). When the transport platform deviates, the operating track (13) 3) The ball (52) on one side is squeezed to move into the receiving groove (51), and the ball (52) drives the conical plug (54) to squeeze the spring (55) to shorten, and the conical plug (54) is separated from the conical hole that originally fits tightly therewith, and the lubricant cavity (53) is connected to each of the receiving grooves (51). When the guide wheel (5) rotates, centrifugal force is generated, and the lubricant in the lubricant cavity (53) flows into the receiving groove (51) through the hole of the conical plug (54); When the transport platform is located on the operating track (13), it is in track mode. In this mode, the roller (6) is in contact with the upper surface of the operating track (13) and bears the load-bearing task. The motor (8) drives the central shaft (3) to rotate through the coupling (7). The central shaft (3) drives the roller (6) to rotate, and the roller (6) drives the transport platform to move on the operating track (13).

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