A high efficiency stacker

Abstract

The application discloses a high-efficiency stacking machine, which comprises a sky rail and a ground rail, a goods taking mechanism between the sky rail and the ground rail, a first stacking mechanism on the sky rail and a second stacking mechanism on the ground rail, the goods taking mechanism comprises a group of first vertical columns, a first cargo frame is connected between two first vertical columns through a lifting assembly, the first stacking mechanism comprises a group of second vertical columns, a second cargo frame is connected between two second vertical columns through a lifting assembly, and the second stacking mechanism comprises a group of third vertical columns, a third cargo frame is connected between two third vertical columns through a lifting assembly. The goods taking mechanism, the first stacking mechanism and the second stacking mechanism are arranged, the goods taking mechanism, the first stacking mechanism and the second stacking mechanism are matched with each other, high-efficiency operation can be realized, the layout of the stereoscopic warehouse is not changed, and the storage capacity of the warehouse is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stacking machines, in particular to a high-efficiency stacking machine. BACKGROUND

[0002] With the development of modern logistics industry towards intelligence and high efficiency, automated warehouse has become the mainstream solution for warehouse management. As the core equipment of the automated warehouse, the operation efficiency of the stacking machine directly affects the throughput capacity of the entire warehouse system. The traditional single-fork stacking machine uses a single actuator to complete the three-dimensional movement (horizontal walking, vertical lifting, and fork extension) of the goods. Although this design is simple in structure, it has obvious efficiency bottleneck in actual application. Especially in e-commerce logistics, intelligent manufacturing and other application scenarios with high requirements for warehouse efficiency, the single-fork stacking machine often becomes the key factor restricting the overall efficiency of the system.

[0003] To solve this problem, the industry has proposed various technical improvement schemes. For example, a double-station stacking machine and its control method are disclosed in Chinese Patent No. CN120156799A. This technology sets a stacking module including two stacking units on the track module, so that the two stacking units can be flexibly transferred at different positions of the track module according to the operation requirements. Although this design can theoretically improve the operation efficiency, it has significant defects in actual application: in order to realize the simultaneous operation of the two stacking units, it is necessary to set a picking point and a unloading point on both sides of the goods shelf. This requirement contradicts the trend of modern automated warehouse to pursue high space utilization, resulting in a significant reduction in the effective storage area of the warehouse. According to actual engineering case statistics, the storage density of a warehouse using this design will usually be reduced by 20%-30%.

[0004] In addition, the existing stacking machine technology also has the following technical pain points:

[0005] For example, insufficient goods transfer precision: the traditional stacking machine lacks effective positioning compensation mechanism when the forks are docked, which easily leads to goods deviation or falling; poor equipment stability: under long-term high-load operation, key components (such as lifting mechanism, walking mechanism) are prone to wear and deformation; high maintenance cost: complex mechanical structure and frequent maintenance requirements increase operating costs; poor adaptability: difficult to adapt to the operation requirements of different specifications of goods shelves, lack of flexibility.

[0006] The existence of these problems seriously restricts the popularization and application of the stacker in the modern intelligent warehouse system. Therefore, developing a new type of high-efficiency stacker which can not only maintain the existing warehouse layout but also significantly improve the operation efficiency has become a technical problem to be solved in the industry. The ideal solution should achieve breakthroughs in the following aspects: maintaining or improving the space utilization of the existing warehouse, significantly improving the operation efficiency, enhancing the stability and reliability of the equipment, reducing the maintenance cost, and having good adaptability. SUMMARY

[0007] The present application aims to at least solve one of the technical problems existing in the prior art or related art.

[0008] Therefore, the purpose of the present application is to provide a high-efficiency stacker, which comprises a ceiling rail and a floor rail, and a goods taking mechanism located between the ceiling rail and the floor rail, a first stacking mechanism located on the ceiling rail, and a second stacking mechanism located on the floor rail.

[0009] The goods taking mechanism comprises a group of first vertical columns, and a first load frame connected between two first vertical columns through a lifting assembly.

[0010] The first stacking mechanism comprises a group of second vertical columns, and a second load frame connected between two second vertical columns through a lifting assembly.

[0011] The second stacking mechanism comprises a group of third vertical columns, and a third load frame connected between two third vertical columns through a lifting assembly.

[0012] The second load frame and the third load frame are both welded with a group of second guide crossbars on the inner wall.

[0013] The first vertical column and the second vertical column are connected with a walking assembly at the top end through a rotating assembly, and the first vertical column and the third vertical column are connected with a walking assembly at the bottom end through a rotating assembly.

[0014] As a preferred technical solution:

[0015] The lifting assembly comprises a lead screw located in the first vertical column, the second vertical column and the third vertical column, a movable frame sleeved on the first vertical column, the second vertical column and the third vertical column, and a fixed seat welded with the bottom end of the first vertical column, the bottom end of the second vertical column and the top end of the third vertical column.

[0016] The convex block is protruded on the inner wall of one side of the movable frame, the lead screw passes through the convex block and is connected with the convex block through the ball screw nut pair, and the movable frame is provided with a through groove on the remaining three side walls.

[0017] Through the above technical scheme, the inner side of the movable frame is not in contact with the outer walls of the first column, the second column and the third column, and the three sliding wheels on the movable frame can roll on the outer walls of the first column, the second column and the third column, so that the movable frame moves vertically.

[0018] The fixed seat is a hollow structure, one side of the fixed seat is fixed with a first servo motor, one end of the lead screw penetrates through the fixed seat and extends into the inside of the fixed seat, the lead screw is movably connected with the bearing of the fixed seat, the inside of the fixed seat is provided with a transmission rod, the end of the lead screw located in the inside of the fixed seat and the transmission rod are both fixed with meshing conical gears through clamping pins, and one end of the transmission rod penetrates through the fixed seat and is butted with the output shaft of the first servo motor.

[0019] Through the above technical scheme, the hollow design of the fixed seat enables the transmission rod to rotate axially in the fixed seat and enables the conical gears to mesh and transmit power in the fixed seat, so that the transmission rod can transmit power with the lead screw.

[0020] The first column, the second column and the third column are all hollow structures, one side of each of the first column, the second column and the third column is provided with a second open groove for the convex block to penetrate, and the side walls of the first cargo frame, the second cargo frame and the third cargo frame are all welded with movable frames.

[0021] Through the above technical scheme, the second open groove is long strip-shaped and has a certain length, so that the convex block can move in the inside of the first column, the second column or the third column through the second open groove, thereby realizing the vertical movement of the movable frame.

[0022] The rotating assembly includes a fixed plate, a rotating plate and a second servo motor fixed on the fixed plate, the center of the rotating plate is provided with a rotating shaft, the rotating shaft penetrates through the fixed plate and is movably connected with the bearing of the fixed plate, the outer circular wall of the rotating plate is fixed with a gear ring, and the output shaft of the second servo motor is fixed with a gear meshing with the gear ring through a clamping pin.

[0023] The rotating plate is provided with a cutout on the outer circle, the outer circular wall of the rotating plate is protruded to form an arc-shaped flange, the fixed plate is provided with a group of symmetrically distributed arc-shaped grooves, and the flange is slidably embedded into the arc-shaped grooves.

[0024] Through the technical scheme, the gear ring is arc-shaped, the arc is less than 360 degrees and greater than 180 degrees, the design can avoid that the gear ring shields the cutout, and when the rotating plate rotates 90 degrees clockwise or counterclockwise, the gear ring and the gear can keep the meshing state, and the structure is reasonable.

[0025] The first column top end, the second column top end and the third column bottom end are all welded and fixed with the rotating plate, and the fixing seat of the first column bottom end is welded and fixed with the rotating plate.

[0026] Through the technical scheme, the whole is welded and fixed, the structural strength and firmness can be improved, and the first column, the second column or the third column can be stably and quickly rotated and moved.

[0027] The first fork is hollow, and both ends thereof are open, the first fork top surface wall body is provided with a first open slot, and opposite surfaces of the two first forks are welded and fixed through a first connecting plate.

[0028] The second fork is hollow, and both ends thereof are open, opposite surfaces of the two second forks are welded and fixed through a second connecting plate, and the width of the second fork is consistent with the slot width of the first open slot.

[0029] Through the technical scheme, when the first fork carries goods, the structural design of the first fork and the second fork makes the second fork inserted into the first fork when the two are opposite, so that the second fork can extend into the tray from the other side, when the second fork is moved out of the first fork through the first open slot, the second fork can contact and hold the tray, so that the goods are transferred from the first fork to the second fork.

[0030] The walking assembly comprises a sliding block matched with the overhead rail and the ground rail, the sliding block is provided with a group of walking wheels, and the sliding block is welded and fixed with the fixed plate.

[0031] Through the technical scheme, when the sliding block moves on the overhead rail or the ground rail through the walking wheels, the fixed plate can be driven to move synchronously, and then the fixed plate can drive the first column, the second column or the third column to move through the rotating plate.

[0032] Compared with the prior art, the present application has at least the following beneficial effects:

[0033] (1) Three-agency collaborative operation realizes efficient access, through the linkage of the taking mechanism, the first stacking mechanism and the second stacking mechanism, a three-dimensional goods access system is constructed. The taking mechanism is responsible for docking the taking point, the first stacking mechanism independently runs along the overhead track to process the upper layer shelf, and the second stacking mechanism independently runs along the ground track to process the lower layer shelf, and the three form a three-dimensional operation network under the collaborative control of the lifting assembly, the rotating assembly and the walking assembly. This collaborative mechanism breaks through the limitations of traditional stacking machine single-line operation, significantly improves the overall operation efficiency, and is perfectly compatible with the existing warehouse layout.

[0034] (2) Precise linkage of rotating-lifting-walking multi-system, the gear ring transmission of the rotating assembly, the precision control of the ball screw of the lifting assembly and the track positioning technology of the walking assembly are innovatively deeply integrated. When the taking mechanism and the stacking mechanism are docked, the rotating assembly realizes precise alignment, the lifting assembly synchronously adjusts the height, and the walking assembly precisely positions, and the three systems ensure the stability and reliability of the goods transfer through collaborative control, which is significantly better than the operation effect of the traditional stacking machine.

[0035] (3) Modular structure cooperates to improve system reliability, the hollow column and the movable frame are used for modular lifting design, and the flange-groove guide structure of the rotating assembly forms mechanical complementation. The sliding wheels of the movable frame share the radial load during lifting, the flange structure of the rotating plate absorbs the torsional stress, and the welded fixed cargo carrying frame ensures the overall rigidity. This collaborative design effectively improves the structural stability and service life of the equipment, and reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0037] Figure 1 is a front view of the present application;

[0038] Figure 2 is a perspective view of the present application;

[0039] Figure 3 is a perspective view of the first cargo carrying frame and the first fork of the present application;

[0040] Figure 4 is a perspective view of the second cargo carrying frame and the second fork of the present application;

[0041] Figure 5 is a perspective view of the first column and the movable frame of the present application;

[0042] Figure 6 is a top view of the first column and the movable frame of the present application;

[0043] Figure 7 is a sectional view of the fixed seat of the present application;

[0044] Figure 8 This is a front view of the rotating plate and the fixed plate of the present invention;

[0045] Figure 9 This is a perspective view of the rotating plate and the fixed plate of the present invention.

[0046] In the diagram: 1. Top rail; 2. Ground rail; 3. First column; 4. First cargo frame; 5. First fork; 6. First guide bar; 7. First connecting plate; 8. Second column; 9. Second cargo frame; 10. Third column; 11. Third cargo frame; 12. Second fork; 13. Second guide bar; 14. Second connecting plate; 15. Movable frame; 16. Sliding wheel; 17. Protrusion; 18. Lead screw; 19. Fixed seat; 20. Transmission rod; 21. Bevel gear; 22. First servo motor; 23. Rotating plate; 24. Rotating shaft; 25. Gear ring; 26. Flange; 27. Fixed plate; 28. Second servo motor; 29. ​​Gear; 30. Arc groove; 31. Sliding block; 32. Traveling wheel; 33. First opening slot; 34. Second opening slot; 35. Cutout. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0049] like Figures 1-4 As shown, this embodiment of the invention discloses a high-efficiency stacker crane, including a top rail 1 and a ground rail 2, a picking mechanism located between the top rail 1 and the ground rail 2, a first stacking mechanism located on the top rail 1, and a second stacking mechanism located on the ground rail 2.

[0050] The picking mechanism includes a set of first columns 3, and a first cargo frame 4 is connected between the two first columns 3 through a lifting assembly. A set of first guide crossbars 6 are welded on the inner wall of the first cargo frame 4, and a first fork 5 is sleeved on the first guide crossbars 6.

[0051] The first stacking mechanism includes a set of second columns 8, and a second cargo frame 9 is connected between the two second columns 8 by a lifting assembly.

[0052] The second stacking mechanism comprises a group of third columns 10, and a third cargo frame 11 is connected between two third columns 10 through a lifting assembly.

[0053] A group of second guide cross bars 13 are welded and fixed on the inner walls of the second cargo frame 9 and the third cargo frame 11, and a second fork 12 is sleeved on the second guide cross bar 13.

[0054] The top ends of the first column 3 and the second column 8 are connected with a walking assembly through a rotating assembly, the bottom ends of the first column 3 and the third column 10 are connected with a walking assembly through a rotating assembly, and the walking assembly is slidably connected with the sky rail 1 and the ground rail 2.

[0055] Specifically, when the goods need to be taken and stacked, the transport vehicle delivers the goods to the designated taking point, the taking mechanism moves horizontally between the sky rail 1 and the ground rail 2 through the walking assembly, when it moves to the taking point, the first cargo frame 4 is moved to the designated height through the lifting assembly, and the first fork 5 on the first cargo frame 4 can be forked into the tray by sliding on the first guide cross bar 6, so as to fork and take the goods.

[0056] Then the first stacking mechanism moves on the sky rail 1, at this time, the first cargo frame 4 and the second cargo frame 9 are moved to the same height through the lifting assembly, and the first cargo frame 4 is rotated clockwise by 90° and the second cargo frame 9 is rotated counterclockwise by 90° through the rotating assembly, at this time, the first cargo frame 4 and the second cargo frame 9 are opposite, the first fork 5 transfers the goods to the second fork 12, then the second cargo frame 9 is rotated clockwise by 90° through the rotating assembly and is moved horizontally on the sky rail 1 through the walking assembly and in the vertical direction through the lifting assembly, so as to move the goods to the designated position of the goods shelf, the second fork 12 can stack the goods on the goods shelf by sliding on the second guide cross bar 13, in this process, the taking mechanism can fork and take the goods again, through the above steps, the taking mechanism can transfer the goods to the second fork 12 in the third cargo frame 11, the third cargo frame 11 can stack the goods on the goods shelf through horizontal and vertical movement, and then the taking mechanism, the first stacking mechanism and the second stacking mechanism cooperate with each other to quickly store the goods and have high operation efficiency.

[0057] In one specific embodiment of the present application, the lifting assembly comprises a lead screw 18 located in the first column 3, the second column 8 and the third column 10, a movable frame 15 sleeved on the first column 3, the second column 8 and the third column 10, and a fixed seat 19 welded and fixed with the bottom end of the first column 3, the bottom end of the second column 8 and the top end of the third column 10.

[0058] The inner wall of one side of the movable frame 15 is protruded to form a protrusion 17, a lead screw 18 passes through the protrusion 17 and is connected with the protrusion 17 through a ball screw nut pair, and the remaining three side walls of the movable frame 15 are provided with through grooves, and the through grooves are provided with sliding wheels 16.

[0059] The fixed seat 19 is a hollow structure, one side of the fixed seat 19 is fixed with a first servo motor 22, one end of the lead screw 18 penetrates through the fixed seat 19 and extends into the inside of the fixed seat 19, the lead screw 18 is movably connected with the bearing of the fixed seat 19, the inside of the fixed seat 19 is provided with a transmission rod 20, the end of the lead screw 18 located in the inside of the fixed seat 19 and the transmission rod 20 are both fixed with meshing conical gears 21 through snap pins, and one end of the transmission rod 20 penetrates through the fixed seat 19 and is butted with the output shaft of the first servo motor 22.

[0060] The first column 3, the second column 8 and the third column 10 are all hollow structures, and the first column 3, the second column 8 and the third column 10 are all provided with second open grooves 34 for the protrusions 17 to penetrate, and the side walls of the first cargo frame 4, the second cargo frame 9 and the third cargo frame 11 are all welded with movable frames 15.

[0061] Specifically, as shown in Figure 2 , Figure 5 , Figure 6 and Figure 7 , the outer walls of the first column 3, the second column 8 and the third column 10 are all in contact with the sliding wheels 16, so that the movable frame 15 can move vertically along the first column 3, the second column 8 and the third column 10 through the sliding wheels 16, and when moving, through the plurality of sliding wheels 16, not only the friction can be reduced and the service life of the equipment can be improved, but also the sliding precision can be ensured.

[0062] And the movable frame 15 can adjust the height of the first cargo frame 4, the second cargo frame 9 and the third cargo frame 11 through vertical movement, so when the height needs to be adjusted, the movable frame 15 only needs to be driven to move.

[0063] When the first servo motor 22 is powered on and operates, the first servo motor 22 can drive the transmission rod 20 to rotate axially, the transmission rod 20 can drive the lead screw 18 to rotate axially through the meshing transmission between the conical gears 21, the lead screw 18 can drive the sliding wheel 16 to move vertically along the first column 3, the second column 8 or the third column 10 through the protrusion 17, and the second open groove 34 is arranged so that the protrusion 17 can move in the first column 3, the second column 8 or the third column 10 without being hindered, ensuring the stable operation of the lifting operation.

[0064] In this way, the first servo motor 22 can drive the transmission rod 20 to rotate clockwise or counterclockwise, so as to drive the first cargo frame 4, the second cargo frame 9 and the third cargo frame 11 to rise or fall through the movable frame 15.

[0065] The ball screw transmission can be formed by the ball screw nut pair, high-precision control is realized, and the lifting precision is higher than that of the traditional winch, so that the goods transfer between the goods taking mechanism, the first stacking mechanism and the second stacking mechanism can be smoothly and stably completed, and the fast taking operation is ensured.

[0066] In one embodiment of the application, the rotating assembly includes a fixed plate 27 and a rotating plate 23, and a second servo motor 28 fixed to the fixed plate 27, a rotating shaft 24 is arranged at the center of the rotating plate 23, the rotating shaft 24 penetrates the fixed plate 27 and is in bearing activity connection with the fixed plate 27, a gear ring 25 is fixed on the outer circular wall of the rotating plate 23, and a gear 29 engaged with the gear ring 25 is fixed on the output shaft of the second servo motor 28 by a snap pin.

[0067] A cutout 35 is formed on the outer circle of the rotating plate 23, and an arc-shaped flange 26 is protrudingly formed on the outer circular wall of the rotating plate 23, a group of symmetrically distributed arc-shaped grooves 30 are formed on the fixed plate 27, and the flange 26 is slidingly embedded into the arc-shaped grooves 30.

[0068] In one embodiment of the application, the top end of the first stand 3, the top end of the second stand 8 and the bottom end of the third stand 10 are all welded and fixed with the rotating plate 23, and the fixing seat 19 at the bottom end of the first stand 3 is welded and fixed with the rotating plate 23.

[0069] Specifically, as shown in Figure 2 、 Figure 8 and Figure 9 , the rotating plate 23 cooperates with the fixing seat 19 to drive the two first stands 3 to rotate, and the second stand 8 and the third stand 10 are directly driven by the rotating plate 23 to rotate, so as to realize the angle adjustment of the first cargo carrying frame 4, the second cargo carrying frame 9 and the third cargo carrying frame 11.

[0070] The rotating plate 23 is a rotating structure on the fixed plate 27 through the rotating shaft 24, and when the rotating plate 23 rotates, the flange 26 thereon can rotate in the arc-shaped groove 30, under the action of the flange 26 and the arc-shaped groove 30, the force acting on the rotating plate 23 can be distributed to the flange 26 and the rotating shaft 24, so as to avoid the dislocation between the rotating shaft 24 and the fixed plate 27 due to the excessive axial load of the rotating shaft 24, and ensure that the rotating plate 23 can rotate smoothly.

[0071] When the first loading frame 4 and the second loading frame 9 or the first loading frame 4 and the third loading frame 11 are lifted to the same height by the lifting assembly, at this time, the second servo motor 28 is powered to operate, and the second servo motor 28 drives the rotating plate 23 to rotate on the fixed plate 27 through the meshing of the gear 29 and the gear ring 25, and the rotating plate 23 can drive the first loading frame 4, the second loading frame 9 or the third loading frame 11 to rotate through the first vertical column 3, the second vertical column 8 or the third vertical column 10 by rotating.

[0072] The cutout 35 is arranged so that when the first loading frame 4 and the second loading frame 9 or the first loading frame 4 and the third loading frame 11 are rotated to be opposite, the cutouts 35 on the two rotating plates 23 are also opposite, thereby increasing the spacing between the two rotating plates 23, facilitating the movement of the first loading frame 4 and the second loading frame 9 or the first loading frame 4 and the third loading frame 11 to each other and the transfer of goods.

[0073] In one specific embodiment of the application, the first fork 5 is hollow, and both ends thereof are open, the first fork 5 is provided with a first open slot 33 on the top surface wall, and the opposite surfaces of the two first forks 5 are welded and fixed by the first connecting plate 7.

[0074] The second fork 12 is hollow, and both ends thereof are open, the opposite surfaces of the two second forks 12 are welded and fixed by the second connecting plate 14, and the width of the second fork 12 is consistent with the slot width of the first open slot 33.

[0075] Specifically, as shown in Figure 3 and Figure 4 The first loading frame 4 is provided with an electric push rod for pushing the first connecting plate 7, and the second loading frame 9 and the third loading frame 11 are also provided with an electric push rod for pushing the second connecting plate 14.

[0076] When the first loading frame 4 and the second loading frame 9 or the first loading frame 4 and the third loading frame 11 are rotated to be opposite, and gradually move to each other under the driving of the walking assembly, at this time, the electric push rod can drive the two first forks 5 to move along the first guide horizontal rod 6 by pushing the first connecting plate 7, so that the first fork 5 can move the goods out of the first loading frame 4.

[0077] Meanwhile, the electric push rod pushes the second connecting plate 14, which can drive the two second forks 12 to move along the second guide cross rod 13, and the second forks 12 can be inserted into the two first forks 5 when moving, at this time, the second loading frame 9 or the third loading frame 11 is moved upward under the driving of the lifting assembly, the second forks 12 can move out of the first opening slot 33 upward and contact the pallet, so that the second forks 12 lift the goods, the first forks 5 are reset and pulled out of the pallet under the driving of the electric push rod, so that the transfer of the goods is completed, and the second forks 12 are reset under the driving of the electric push rod to move the goods into the second loading frame 9 or the third loading frame 11.

[0078] Then, when the lifting assembly and the walking assembly move the second loading frame 9 or the third loading frame 11 to the designated position of the goods shelf, the second forks 12 are moved again under the driving of the electric push rod to place the goods on the goods shelf.

[0079] In one specific embodiment of the present application, the walking assembly comprises a sliding block 31 matched with the overhead rail 1 and the ground rail 2, and a set of walking wheels 32 is arranged on the sliding block 31, and the sliding block 31 is welded and fixed with the fixed plate 27.

[0080] Specifically, as shown in Figure 2 and Figure 9 The sliding block 31 can slide along the overhead rail 1 or the ground rail 2, and a motor is arranged on the sliding block 31 and connected with the walking wheels 32, the walking wheels 32 are driven to rotate by the motor, and when the walking wheels 32 roll on the overhead rail 1 or the ground rail 2, the sliding block 31 is pushed to slide.

[0081] In the description of the present application, the terms of “connection”, “installation”, “fixation” and the like should be understood in a broad sense, for example, “connection” can be fixed connection, detachable connection or integral connection, and can be direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0082] In the description of the present application, the terms of “one embodiment”, “some embodiments”, “a specific embodiment” and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-efficiency stacker crane, comprising a top rail (1) and a bottom rail (2), a picking mechanism located between the top rail (1) and the bottom rail (2), a first stacking mechanism located on the top rail (1), and a second stacking mechanism located on the bottom rail (2), characterized in that: The picking mechanism includes a set of first columns (3), and a first cargo frame (4) is connected between the two first columns (3) through a lifting assembly. A set of first guide crossbars (6) is welded on the inner wall of the first cargo frame (4), and a first fork (5) is sleeved on the first guide crossbars (6); the top surface of the first fork (5) is provided with a first opening groove (33). The first stacking mechanism includes a set of second columns (8), and a second cargo frame (9) is connected between the two second columns (8) through a lifting assembly. The second stacking mechanism includes a set of third columns (10), and a third cargo frame (11) is connected between the two third columns (10) by a lifting assembly. A set of second guide crossbars (13) are welded and fixed on the inner walls of the second cargo frame (9) and the third cargo frame (11). A second fork (12) is fitted on the second guide crossbar (13). The width of the second fork (12) is consistent with the width of the first opening slot (33) so that when the first cargo frame (4) is aligned with the second cargo frame (9) / the third cargo frame (11), the second fork (12) can be inserted into the first opening slot (33) to complete the transfer of goods. The first column (3) and the second column (8) are connected to the top of the walking component through the rotating component, and the first column (3) and the third column (10) are connected to the bottom of the walking component through the rotating component. The walking component is slidably connected to the overhead rail (1) and the ground rail (2). The second cargo frame (9) and the third cargo frame (11) can operate independently of each other in rotation and lifting.

2. The high-efficiency stacker crane according to claim 1, characterized in that: The lifting assembly includes a lead screw (18) located in the first column (3), the second column (8) and the third column (10), a movable frame (15) sleeved on the first column (3), the second column (8) and the third column (10), and a fixed seat (19) welded and fixed to the bottom end of the first column (3), the bottom end of the second column (8) and the top end of the third column (10); The inner wall of one side of the movable frame (15) has a protrusion (17) formed by the protrusion. The screw (18) passes through the protrusion (17) and is connected to the protrusion (17) through the ball screw nut pair. The other three side walls of the movable frame (15) are provided with through grooves, and sliding wheels (16) are provided in the through grooves.

3. The high-efficiency stacker crane according to claim 2, characterized in that: The fixed base (19) is a hollow structure. A first servo motor (22) is fixed on one side of the fixed base (19). One end of the lead screw (18) passes through the fixed base (19) and extends into the interior of the fixed base (19). The lead screw (18) is movably connected to the fixed base (19) by a bearing. A transmission rod (20) is provided inside the fixed base (19). The end of the lead screw (18) inside the fixed base (19) and the transmission rod (20) are both fixed with bevel gears (21) that mesh with each other by a pin. One end of the transmission rod (20) passes through the fixed base (19) and is connected to the output shaft of the first servo motor (22).

4. A high-efficiency stacker crane according to claim 2, characterized in that: The first column (3), the second column (8) and the third column (10) are all hollow structures. A second opening slot (34) for the protrusion (17) to pass through is provided on one side of the first column (3), the second column (8) and the third column (10). Movable frames (15) are welded and fixed to the side walls of the first cargo frame (4), the second cargo frame (9) and the third cargo frame (11).

5. A high-efficiency stacker crane according to claim 1, characterized in that: The rotating assembly includes a fixed plate (27) and a rotating plate (23), and a second servo motor (28) fixed on the fixed plate (27). A rotating shaft (24) is provided at the center of the rotating plate (23). The rotating shaft (24) passes through the fixed plate (27) and is movably connected to the bearing of the fixed plate (27). A gear ring (25) is fixed on the outer circular wall of the rotating plate (23). A gear (29) that meshes with the gear ring (25) is fixed on the output shaft of the second servo motor (28) by a pin.

6. A high-efficiency stacker crane according to claim 5, characterized in that: A notch (35) is formed on the outer circle of the rotating plate (23), and an arc-shaped flange (26) is formed on the outer wall of the rotating plate (23). A set of symmetrically distributed arc-shaped grooves (30) are provided on the fixed plate (27), and the flange (26) is slidably embedded into the arc-shaped grooves (30).

7. A high-efficiency stacker crane according to claim 1, characterized in that: The top of the first column (3), the top of the second column (8), and the bottom of the third column (10) are all welded and fixed to the rotating plate (23). The fixing seat (19) at the bottom of the first column (3) is welded and fixed to the rotating plate (23).

8. A high-efficiency stacker crane according to claim 1, characterized in that: The first fork (5) is hollow and has open ends. The two first forks (5) are fixed to each other by welding through the first connecting plate (7).

9. A high-efficiency stacker crane according to claim 8, characterized in that: The second fork (12) is hollow and has open ends. The two sides of the two second forks (12) are welded and fixed together by the second connecting plate (14).

10. A high-efficiency stacker crane according to claim 1, characterized in that: The walking assembly includes a sliding block (31) that cooperates with the overhead rail (1) and the ground rail (2). A set of walking wheels (32) are provided on the sliding block (31). The sliding block (31) is welded and fixed to the fixing plate (27).

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