AGV lifting device

Abstract

An AGV lifting device, comprising a lifting mechanism, a speed reduction mechanism and a rotating mechanism, the lifting mechanism is connected with the input end of the speed reduction mechanism, and the output rod capable of axial lifting is assembled on the speed reduction mechanism. The rotating mechanism comprises a rotating gear, an assembly slot for the output rod to pass through is arranged on the rotating gear, a rolling groove is arranged on the side wall of the assembly slot, and a roller is assembled in the rolling groove. The output rod is provided with a rolling plane in contact with the roller. Compared with the prior art, the present application has the following beneficial effects: the output rod and the rotating gear are manufactured and assembled in a split body, avoiding the problems of excessive device size, high cost, gear axial sliding wear and the like during overall manufacturing.

Description

Technical Field

[0001] This invention belongs to the field of AGV lifting structure technology, specifically relating to an AGV lifting device. Background Technology

[0002] An AGV lifting device is a piece of equipment used in automated logistics and warehousing systems. It can automatically lift and transport goods. In practical applications, due to differences in the volume and weight of goods, different lifting operations are required based on the actual situation. Therefore, a flexible and efficient AGV lifting device is needed to meet these requirements.

[0003] Existing AGV lifting devices suffer from the following drawbacks: First, their structure is complex, resulting in high manufacturing costs. To ensure the lifting stroke of the output rod, a rotating gear meshing with the gear segment of the output rod is required to drive its rotation. However, the gear segment is quite long, leading to a large overall structural volume. Second, during the lifting process, sliding friction occurs between the gear segment and the rotating gear, causing severe wear and noise. These problems limit the applicability and efficiency of existing technologies.

[0004] Therefore, based on some of the situations in the prior art described above, this application has made further designs and improvements. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides an AGV lifting device, specifically an AGV lifting device that can greatly reduce the size of the device and improve its service life.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0007] An AGV lifting device includes a lifting mechanism, a deceleration mechanism, and a rotating mechanism. The lifting mechanism is connected and assembled to the input end of the deceleration mechanism, and the deceleration mechanism is equipped with an output rod capable of axial lifting and lowering.

[0008] The rotating mechanism includes a rotating gear with a mounting groove for the output rod to pass through. A rolling groove is provided on the side wall of the mounting groove, and a roller is fitted inside the rolling groove. The output rod has a rolling surface that contacts the roller.

[0009] By manufacturing the output rod and rotating gear separately and assembling them using a roller structure, the freedom of rotation and lifting of the output rod is ensured, while avoiding problems such as excessive device size, high cost, and axial sliding wear of gears that can be avoided when manufacturing the whole device. This effectively reduces the size of the lifting device and lowers production costs and operating noise.

[0010] In a preferred embodiment of the AGV lifting device described in this application, specifically, the number of rolling grooves is three, equidistantly arranged around the shaft. Each rolling groove contains at least two rollers equidistantly distributed in the thickness direction of the rotating gear, which facilitates uniform force distribution on the rotating gear and rollers when the output rod rotates.

[0011] In a preferred embodiment of the AGV lifting device described in this application, the reduction mechanism is specifically a planetary reduction gear set including a sun gear and a planetary carrier. The output rod is connected to the planetary carrier, and the lifting mechanism is connected to the sun gear. This design features a compact structure, small size, and a large transmission ratio, which is beneficial for miniaturizing the lifting device.

[0012] In a preferred embodiment of the AGV lifting device described in this application, specifically, an output shaft seat coaxial with the sun gear is provided on the planetary carrier, and a mating cylindrical shaft component is assembled on the output shaft seat. The mating cylindrical shaft component has a through threaded groove in the middle, and the output rod is threadedly installed in the threaded groove. Operators can assemble output rods of different diameters by replacing the mating cylindrical shaft component, greatly improving the applicability of the lifting device.

[0013] In a preferred embodiment of the AGV lifting device described in this application, the sun gear is provided with a receiving groove opposite to the threaded groove, which can accommodate one end of the output rod inside the housing. This is beneficial for maximizing the lifting stroke of the output rod while keeping the volume of the reduction gear unchanged.

[0014] In a preferred embodiment of the AGV lifting device described in this application, the output shaft seat is provided with a through hole for the output rod to pass through. The diameters of both the through hole and the receiving groove are larger than the diameter of the threaded groove. This prevents the output rod from contacting the sidewall of the through hole or the receiving groove, thus avoiding wear.

[0015] In a preferred embodiment of the AGV lifting device described in this application, the lifting mechanism specifically includes a lifting drive component, which is connected to a sun gear via a first clutch. The first clutch is used to prevent the output rod from reversing and transmitting the signal to the lifting drive component, thereby preventing damage to the lifting drive component.

[0016] In a preferred embodiment of the AGV lifting device described in this application, the rotating mechanism further includes a drive assembly for driving the rotating gear to rotate. The drive assembly includes a drive gear meshing with the rotating gear, and the drive gear is connected to a rotating drive element. When the output rod needs to rotate, the drive assembly drives the rotating gear to rotate, and the rotating gear drives the output rod to rotate.

[0017] In a preferred embodiment of the AGV lifting device described in this application, the rotating mechanism further includes a limiting component for restricting the rotation of the rotating gear. The limiting component includes a limiting gear meshing with the rotating gear, and the limiting gear is connected to a limiting fixing seat via a second clutch. When the output rod needs to be raised or lowered, the limiting component restricts the rotation of the output rod via the rotating gear, causing the output rod to change from rotational motion to lifting motion.

[0018] Compared with the prior art, this application has the following beneficial effects: 1. By manufacturing and assembling the output rod and rotating gear separately, the problem of excessively large device size and high cost during overall manufacturing is avoided.

[0019] 2. The output rod and the rotating gear are connected by rollers, which avoids problems such as axial sliding wear of the gear.

[0020] 3. The design of combining the output rod and the reduction mechanism is beneficial to maximize the lifting stroke of the output rod while keeping the size of the reduction device unchanged. Attached Figure Description

[0021] Figure 1 This is a perspective view of the lifting device described in this application.

[0022] Figure 2 This is a plan view of the lifting device described in this application.

[0023] Figure 3 This is a schematic diagram of the internal structure of the speed reduction mechanism.

[0024] Figure 4 An exploded view of the planetary reduction gear set and output rod assembly structure.

[0025] Figure 5 This is a three-dimensional schematic diagram of a rotating gear.

[0026] The following is an explanation of the markings in the accompanying drawings: 1. Lifting mechanism; 11. Lifting drive component; 12. First clutch; 2. Reduction mechanism; 21. Housing; 211. Gear ring; 22. Sun gear; 221. Receiving groove; 23. Planetary gear; 24. Planetary carrier; 241. Output shaft seat; 242. Through hole; 25. Mating cylinder shaft; 251. Threaded groove; 3. Rotating mechanism; 31. Rotating gear; 311. Assembly groove; 312. Rolling groove; 32. Roller; 33. Drive gear; 34. Rotation drive component; 35. Restricting gear; 36. Restricting fixed seat; 37. Second clutch; 4. Output rod; 41. Rolling plane. Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] In the following embodiments, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the description of this invention; therefore, they should not be construed as limiting this invention. Furthermore, terms such as first, second, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this invention, unless otherwise expressly specified and limited, terms such as installation, connection, linking, etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] refer to Figures 1 to 5 An AGV lifting device includes a lifting mechanism 1, a deceleration mechanism 2, and a rotating mechanism 3. The lifting mechanism 1 is connected and assembled to the input end of the deceleration mechanism 2, and the deceleration mechanism 2 is equipped with an output rod 4 capable of axial lifting.

[0031] The distinguishing feature of this application from the prior art is that the rotating mechanism 3 includes a rotating gear 31, the rotating gear 31 is provided with an assembly groove 311 for the output rod 4 to pass through, the side wall of the assembly groove 311 is provided with a rolling groove 312, and a roller 32 is assembled in the rolling groove 312. The output rod 4 is provided with a rolling surface 41 that contacts the roller 32.

[0032] This application manufactures the output rod 4 and the rotating gear 31 separately and assembles them using the roller 32 structure. While ensuring the freedom of rotation and lifting of the output rod 4, it avoids problems such as excessive device size, high cost, and axial sliding wear of gears when manufacturing the whole device. This can effectively reduce the size of the lifting device and reduce production costs and operating noise.

[0033] Specifically, the number of rolling grooves 312 is three that are equidistantly arranged around the axis. The number of rollers 32 in each rolling groove 312 is at least two that are equidistantly distributed in the thickness direction of the rotating gear 31, which is beneficial to the uniform force on the rotating gear 31 and the rollers 32 when the output rod 4 rotates.

[0034] In a preferred embodiment of this application, the reduction mechanism 2 is a planetary reduction gear set, which includes a housing 21. A sun gear 22, a planetary gear 23, a planet carrier 24 connecting the planetary gear 23, and a gear ring 211 disposed on the inner wall of the housing 21 are assembled within the housing 21. The sun gear 22 is meshed with the planetary gear 23, and the planetary gear 23 is meshed with the gear ring 211.

[0035] In this application, the sun gear 22 is used as the input end and the planetary carrier 24 is used as the output end. The output rod 4 is connected to the planetary carrier 24, and the lifting mechanism 1 is connected to the sun gear 22. The structure is compact, small in size, and has a large transmission ratio, which is beneficial for the miniaturization of the lifting device.

[0036] To facilitate the adaptation of output rods 4 with different rod diameters, the planetary carrier 24 is provided with an output shaft seat 241 coaxial with the sun gear 22. A mating sleeve shaft 25 is bolted to the output shaft seat 241. The mating sleeve shaft 25 has a through threaded groove 251 in the middle, and the output rod 4 is threadedly installed in the threaded groove 251. Operators can assemble output rods 4 with different rod diameters by replacing the mating sleeve shaft 25, greatly improving the applicability of the lifting device.

[0037] To maximize the lifting stroke of the output rod 4 while maintaining a constant volume, the sun gear 22 is provided with a receiving groove 221, opposite to the threaded groove 251, capable of accommodating one end of the output rod 4 within the housing 21. The output shaft seat 241 is provided with a through hole 242 through which the output rod 4 passes. The diameters of both the through hole 242 and the receiving groove 221 are larger than the diameter of the threaded groove 251. This prevents the output rod 4 from contacting the sidewall of the through hole 242 or the receiving groove 221, thus avoiding wear.

[0038] The lifting mechanism 1 includes a lifting drive component 11, which is connected to the sun gear 22 via a first clutch 12. The first clutch 12 is used to prevent the output rod 4 from reversing and transmitting the signal to the lifting drive component 11, which could damage the lifting drive component 11.

[0039] In this application, the rotating mechanism 3 further includes a driving component for driving the rotating gear 31 to rotate and a limiting component for limiting the rotation of the rotating gear 31.

[0040] Specifically, the drive assembly includes a drive gear 33 meshing with the rotating gear 31, and the drive gear 33 is connected to a rotation drive member 34. When the output rod 4 needs to rotate, the drive assembly drives the rotating gear 31 to rotate, and the rotating gear 31 drives the output rod 4 to rotate.

[0041] Specifically, the limiting component includes a limiting gear 35 meshing with the rotating gear 31, and the limiting gear 35 is connected to a limiting fixing seat 36 via a second clutch 37. When the output rod 4 needs to be raised or lowered, the limiting component restricts the rotation of the output rod 4 via the rotating gear 31, so that the output rod 4 changes from rotational motion to lifting motion.

[0042] The working principle of this application is as follows: The output lever 4 is rotated as follows: the first clutch 12 disconnects the connection between the sun gear 22 and the lifting drive component 11, and the second clutch 37 disconnects the connection between the rotating gear 31 and the limiting fixed seat 36. The rotating drive component 34 starts, driving the rotating gear 31 to rotate, which in turn drives the output lever 4 to rotate. During this process, the output lever 4 drives the reduction mechanism 2 to rotate. Because the first clutch 12 disconnects the connection between the sun gear 22 and the lifting drive component 11, power is not transmitted in the reverse direction to the lifting drive component 11, thus preventing damage to the lifting drive component 11.

[0043] The output lever 4 is controlled to rise and fall: the second clutch 37 connects the rotating gear 31 and the limiting fixed seat 36, thus fixing the limiting gear 35 and restricting the rotation of the rotating gear 31. The first clutch 12 connects the sun gear 22 and the lifting drive 11. When the lifting drive 11 rotates, the power is transmitted to the mating cylinder shaft 25 through the reduction mechanism 2. Since the output lever 4 is restricted from rotation, the rotation of the mating cylinder shaft 25 is converted into the lifting motion of the output lever 4.

[0044] The scope of protection of this invention includes, but is not limited to, the above embodiments. The scope of protection of this invention is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art fall within the scope of protection of this invention.

Claims

1. An AGV lifting device, characterized in that, It includes a lifting mechanism (1), a deceleration mechanism (2) and a rotating mechanism (3). The lifting mechanism (1) is connected and assembled with the input end of the deceleration mechanism (2). The deceleration mechanism (2) is equipped with an output rod (4) that can be lifted and lowered axially. The rotating mechanism (3) includes a rotating gear (31), which is provided with an assembly groove (311) for the output rod (4) to pass through. A rolling groove (312) is provided on the side wall of the assembly groove (311), and a roller (32) is assembled in the rolling groove (312). The output rod (4) is provided with a rolling surface (41) that contacts the roller (32). The reduction mechanism (2) is a planetary reduction gear set including a sun gear (22) and a planet carrier (24); the output rod (4) is connected to the planet carrier (24), and the lifting mechanism (1) is connected to the sun gear (22); the planet carrier (24) is provided with an output shaft seat (241) coaxial with the sun gear (22), and a mating cylindrical shaft (25) is assembled on the output shaft seat (241). The mating cylindrical shaft (25) has a through threaded groove (251) in the middle, and the output rod (4) is installed in the threaded groove (251) through threaded engagement; The lifting mechanism (1) includes a lifting drive component (11), which is connected to the sun gear (22) via a first clutch (12); The rotating mechanism (3) further includes a driving component for driving the rotating gear (31) to rotate. The driving component includes a driving gear (33) meshing with the rotating gear (31), and the driving gear (33) is connected to a rotating driving member (34). The rotating mechanism (3) further includes a limiting component for limiting the rotation of the rotating gear (31), the limiting component including a limiting gear (35) meshing with the rotating gear (31), the limiting gear (35) being connected to a limiting fixing seat (36) via a second clutch (37).

2. The AGV lifting device according to claim 1, characterized in that, The number of the rolling grooves (312) is three that are equidistantly arranged around the shaft; the number of rollers (32) in each rolling groove (312) is at least two that are equidistantly distributed in the thickness direction of the rotating gear (31).

3. The AGV lifting device according to claim 1, characterized in that, The sun gear (22) is provided with a receiving groove (221) that is opposite to the threaded groove (251) and can accommodate one end of the output rod (4) inside the housing (21).

4. The AGV lifting device according to claim 3, characterized in that, The output shaft seat (241) is provided with a through hole (242) through which the output rod (4) passes. The diameter of the through hole (242) and the receiving groove (221) are both larger than the diameter of the threaded groove (251).

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