Double-stand-column type stacking machine and assembling method thereof

Abstract

The invention provides a double-stand-column type stacking machine and an assembling method thereof, and belongs to the field of logistics storage. An optimization scheme for the stand column frame is innovatively provided, so that the stable performance of the stacking machine in a high-speed operation state is remarkably improved, the machining period is correspondingly shortened, and the design purpose of rapid assembly is achieved. Comprising two groups of stand columns, an upper cross beam and a lower cross beam which are mutually connected to form an integral frame structure, and a driving assembly for driving the cargo carrying table to suspend and vertically run between the two groups of stand columns is arranged on the lower cross beam; the top and the bottom of each group of stand columns are fixedly connected to the upper cross beam and the lower cross beam through a group of connecting seats; each set of stand columns is provided with two sets of aluminum alloy sections which are parallel, opposite and vertically arranged, a front column and a rear column are connected between the two sets of sections, and each column comprises a plurality of sets of diagonal draw bars which are sequentially and axially fixed end to end.

Description

Technical Field

[0001] This application relates to the field of logistics and warehousing, and specifically proposes a double-column stacker crane with both lightweight and high-speed operation performance for use in automated column warehouses, as well as its assembly method. Background Technology

[0002] In the logistics and warehousing industry, stacker cranes are the core equipment of automated column warehouses, and their performance directly determines the warehouse's inbound and outbound efficiency. With the development of e-commerce, intelligent manufacturing, and other industries, higher demands are being placed on the operating speed and work efficiency of stacker cranes.

[0003] The main technical challenges in implementing high-speed operation control for existing stacker cranes are as follows: First, how to improve lightweight design. The existing steel frame and the complex connection structure of each component result in an excessively heavy overall weight of the stacker crane, directly limiting its acceleration and resulting in high energy consumption. Second, how to further improve the dynamic stability during high-speed operation while achieving lightweight design, especially during startup and braking under high acceleration conditions, when the main structure of the stacker crane is prone to swaying and vibration, seriously affecting the positioning accuracy of the loading platform, the safety of cargo transportation, and the service life of the equipment. Current technical improvements focus on using materials such as aluminum alloys to achieve lightweighting, but these are still limited to simple material replacement and have not systematically solved the problems of insufficient rigidity of the main frame after lightweighting and swaying during high-speed startup or braking.

[0004] In view of the above, this application is hereby submitted. Summary of the Invention

[0005] The double-column stacker crane and its assembly method described in this application are innovatively proposed to solve the problems existing in the prior art, in order to significantly improve the stability of the stacker crane under high-speed operation, correspondingly shorten the processing cycle and achieve the design goal of rapid assembly.

[0006] In response, this application proposes a double-column stacker crane, comprising two sets of columns, an upper crossbeam, and a lower crossbeam connected to each other to form an integral frame structure. A drive assembly is provided on the lower crossbeam to drive the loading platform to be suspended and run vertically between the two sets of columns. The top and bottom of each set of columns are fixedly connected to the upper and lower crossbeams through a set of connecting seats. Each set of columns has two sets of parallel and vertically arranged aluminum alloy profiles, and two rows of diagonal tie rods are connected between the two sets of profiles, each row including a set of diagonal tie rods that are axially fixed from end to end.

[0007] Furthermore, the profile has a rectangular hollow cross-section. Two sets of concave first mounting grooves are symmetrically arranged on one long side of the cross-section. Two sets of mounting ribs perpendicular to the long side are symmetrically arranged on the other long side. A set of concave second mounting grooves is arranged on the side of each set of mounting ribs. Two sets of symmetrically arranged trapezoidal grooves are arranged at the outer end of each set of mounting ribs.

[0008] Furthermore, the cross-sectional main body has its cavity divided into several continuously distributed, sealed chambers by longitudinal and transverse reinforcing ribs.

[0009] Furthermore, the tie rod has two sets of identical rods integrally cast from aluminum alloy material, each set of rods having a rod groove; both ends of each set of rods are bent at the same angle in a counterclockwise direction to form bent ends with mounting screw holes, and the inner side of the bent ends is provided with a set of slots for connecting trapezoidal groove heads.

[0010] Furthermore, when the trapezoidal groove head is inserted into the slot and the two bent ends of the diagonal tie rod are fixed to the profile by bolts, the bent ends of the diagonal tie rod are connected to the profile at 90°; the bent ends are larger in size and thicker in material than the middle part of the rod body.

[0011] When connecting two sets of diagonal braces in two columns, the bent ends of any set of diagonal braces in a column are respectively attached to one side of the mounting stiffener on the same side of the two sets of profiles. The bent ends of the first and second sets of diagonal braces in the column, which are axially fixed to the first and second sets of diagonal braces, are respectively attached to the other side of the mounting stiffener. The bent ends of the diagonal braces are connected to the side of the mounting stiffener by bolts with flanged fixing surfaces passing through mounting bolt holes. The bolts are pre-tightened by locking nuts with non-metallic inserts at the outer ends of the bolts.

[0012] Furthermore, the connecting seat includes a seat box that is a hollow box-type welded component, with two of the four sides of the seat box fixedly connected to L-shaped support seats; an array of mounting screw holes is provided on the other two of the four sides; a vertical positioning groove is formed between the side of the seat box and the support seats, and the support seats are provided with an array of mounting screw holes and reinforcing ribs that mate with the flange holes of the upper and lower crossbeams.

[0013] Based on the above structural design of the double-column stacker crane, this application also proposes the following assembly method for the double-column stacker crane: The double-column stacker crane consists of two sets of columns, an upper crossbeam, and a lower crossbeam connected to each other to form an overall frame. The vertical ends of each set of columns are fixedly connected to the upper crossbeam and the lower crossbeam respectively through a set of connecting seats. Each set of columns consists of two sets of parallel and opposite aluminum alloy profiles arranged vertically. Between the two sets of profiles are two rows of diagonal tie rods, each row including a set of sets of diagonal tie rods that are axially fixed from end to end. The ends of each set of diagonal tie rods respectively form the same clamping force with the same force in opposite directions on the same mounting rib.

[0014] Furthermore, when assembling each set of columns, two rows of diagonal braces are connected between the two sets of profiles; the bent ends of any set of diagonal braces in a row are respectively attached to one side of the mounting stiffener plate located on the same side in the two sets of profiles; the bent ends of the first and second sets of diagonal braces in the row, which are axially fixed to the diagonal braces of that set, are respectively attached to the other side of the mounting stiffener plate; the bent ends of the diagonal braces are connected to the side of the mounting stiffener plate by bolts with flanged fixing surfaces passing through mounting screw holes.

[0015] Furthermore, when the trapezoidal groove head is inserted into the slot and the two bent ends of the diagonal tie rod are fixed to the profile by bolts, the bent ends of the diagonal tie rod are connected to the profile at 90°; the bent ends are larger in size and thicker in material than the middle part of the rod body.

[0016] In summary, the aforementioned double-column stacker crane and its assembly method have the following advantages and beneficial effects: 1. This application innovatively proposes an integral frame structure for columns using double-layer aluminum alloy profiles and diagonal tie rods. This structure significantly improves the balance between lightweight and high rigidity, reducing the column's self-weight while greatly enhancing its bending and torsional stiffness through truss principles. Therefore, it can fundamentally suppress swaying during high-speed operation, ensuring equipment rigidity, and effectively reduce weight to minimize the impact of inertial forces during start-up and shutdown, providing structural protection for high-acceleration operation.

[0017] 2. This application can systematically guarantee the stability of the stacker crane under high-speed operation. The new column and upper and lower connecting seats of the stacker crane have excellent rigidity, thereby ensuring the smooth lifting of the loading platform and the operation of the whole machine. The stacker crane has extreme stability under high-speed and high-acceleration operating conditions. Attached Figure Description

[0018] The innovative solution proposed in this application will now be further illustrated with reference to the following figures.

[0019] Figure 1 This is a schematic diagram of the double-column stacker crane proposed in this application; Figure 2This is a cross-sectional schematic diagram of the profile; Figure 3 This is a schematic diagram of the connector; Figure 4 This is a schematic diagram showing the connection between the column and the upper and lower connecting seats; Figure 5 This is a top-down schematic diagram of the connection between the column and the lower connecting seat; Figure 6 This is a schematic diagram of the pull rod; Figure 7 This is a schematic diagram of the connection between the tie rod and the profile; Detailed Implementation

[0020] Example 1, such as Figure 1 As shown, this application proposes a novel double-column stacker crane, which can be applied to column warehouses in automated warehousing and sorting operations.

[0021] The double-column stacker crane includes two sets of columns 1, an upper crossbeam 2, and a lower crossbeam 3 that are connected to each other to form an overall frame structure. A drive loading platform 4 is installed on the lower crossbeam 3 and is suspended and runs vertically between the two sets of columns 1. The top and bottom of each set of columns 1 are fixedly connected to the upper crossbeam 2 and the lower crossbeam 3 through a set of connecting seats 5. like Figures 2 to 7 As shown, each set of columns 1 has two sets of parallel and vertically arranged aluminum alloy profiles 11, and two rows of diagonal tie rods 12, each row including a set of axially fixed ends, are connected between the two sets of profiles 11. The profile 11 has a rectangular hollow cross-section 11-0. Two sets of concave first mounting grooves 11-1 are symmetrically arranged on one long side of the profile 11-0. Two sets of mounting stiffeners 11-2 are symmetrically arranged on the other long side, perpendicular to the long side. A set of concave second mounting grooves 11-3 is arranged on the side of each set of mounting stiffeners 11-2. Two sets of symmetrically arranged trapezoidal groove heads 11-4 are arranged at the outer end of each set of mounting stiffeners 11-2. Thus, the above structure provides a standardized end-to-end module interface for the profile 11 to be fixedly connected to the tie rod 12 and the connecting seat 5.

[0022] The main body of the cross section 11-0 has several continuously distributed closed chambers 11-6 inside its cavity, which are divided by longitudinal and transverse reinforcing ribs 11-5. The presence of chambers 11-6 can significantly improve the overall bending and torsional stiffness and overall stability of the profile 11, while effectively controlling the weight of the profile.

[0023] The aforementioned tie rod 12 has two sets of identical rod bodies 12-1 integrally formed by casting aluminum alloy material. Each set of rod bodies 12-1 has a rod body groove 12-2, which achieves both strength and lightweighting. Each set of rods 12-1 has two ends bent at the same angle in the counterclockwise direction to form a bent end 12-3 with mounting screw holes 12-4. The inner side of the bent end 12-3 is provided with a set of slots 12-5 for connecting the trapezoidal groove head 11-4. When the trapezoidal groove head 11-4 is inserted into the slot 12-5 and the two bent ends 12-3 of the diagonal tie rod 12 are fixedly connected to the profile 11 by bolts, the bent ends 12-3 of the diagonal tie rod 12 are connected to the profile 11 at 90°. Furthermore, the bent end 12-3 has a larger external dimension and thicker material than the middle part of the rod 12-1.

[0024] When connecting two sets of profiles 11 to two rows of diagonal braces 12, the bent ends 12-3 of any set of diagonal braces 12 in a row are respectively attached to one side of the mounting stiffener 11-2 located on the same side (simultaneously located on the front side or on the rear side) in the two sets of profiles 11. The bent ends 12-3 of the front set of diagonal braces 12 and the rear set of diagonal braces 12 that are axially fixed to the diagonal braces 12 in the same row are respectively attached to the other side of the mounting stiffener 11-2. The two bent ends 12-3 of the diagonal tie rod 12 are connected to the side of the mounting stiffener 11-2 by bolts with flanged fixing surfaces passing through mounting bolt holes 12-4. The bolts are pre-tightened by locking nuts 12-6 with non-metallic inserts at the outer ends, thereby creating sufficient friction between the diagonal tie rod 12 and the profile 11, ensuring uniform distribution of clamping force and increasing the reliability of anti-loosening.

[0025] The two sets of profiles 11 are connected to the front and rear columns. Each column includes a set of diagonal braces 12 that are axially fixed at the beginning and end. The ends of each set of diagonal braces 12 form the same clamping force with the same force in the inner and outer directions of the same mounting stiffener 11-2, thus forming an integral composite truss column structure and stress distribution.

[0026] The connecting seat 5 includes a seat box 50 that is a hollow box-type welded part. Two of the four sides of the seat box 50 are fixedly connected to L-shaped support seats 51 to increase the auxiliary support rigidity and stability of these two sides. An array of mounting screw holes 53 is provided on the other two of the four sides. A vertical positioning groove 52 is formed between the side of the seat 50 and the support base 51. The support base 51 is provided with a series of mounting screw holes 53 and reinforcing ribs 54 that mate with the flange holes of the upper crossbeam 2 and the lower crossbeam 3. When installing the column 1 onto the connecting seat 5, pre-insert the array of toothed plates 14 vertically into the first mounting groove 11-1, the second mounting groove 11-3, and the cavity 11-6 adjacent to the first mounting groove 11-1. Insert the two sets of mounting ribs 11-2 of a set of profiles 11 into the positioning grooves 52. At this time, the main cross-section 11-0 of the profile 11 is in contact with the side of the seat box 50. Use fastening bolts 14 to penetrate the toothed plates 13 in the first mounting groove 11-1, the cavity 11-6, and the side of the seat box 50 to effectively tighten the bolts. The force is transmitted to the sides of the entire cross-section body 11-0 and the seat box 50, thereby fastening the long sides of the two sets of cross-section bodies 11-0 to two of the four sides of the seat box 50 respectively; fastening bolts 14 are used to pass through the support seat 51, the toothed plate 13 in the second mounting slide 11-3, and the side of the seat box 50 respectively, effectively transmitting the bolt tightening force to the short side of the entire cross-section body 11-0, thereby fastening the mounting ribs 11-2 of the two sets of cross-section bodies 11-0 to the other two of the four sides of the seat box 50 and the support seat 51 in sequence; When the connecting seat 5 is installed on the upper crossbeam 2 and the lower crossbeam 3, the side of the connecting seat 5 and the support seat 51 are respectively aligned with the mounting planes of the upper crossbeam 2 and the lower crossbeam 3. The fastening bolts 14 are used to pass through the mounting screw holes 53 on the support seat 51 and the seat box 50, as well as the flange holes on the upper crossbeam 2 and the lower crossbeam 3, so that the connecting seat 5 after connecting the column 1 is respectively installed on the upper crossbeam 2 and the lower crossbeam 3. Finally, the precise positioning of the vertical ends of each column 1 with the upper and lower crossbeams 2 and 3, the verticality of the columns, and the modular installation process were completed through the two sets of connecting seats 5. The bolts were tightened and the preload applied could generate huge normal pressure between the column 1 and the upper and lower crossbeams 2 and 3, thus forming a rigid connection. The columns and crossbeams were transformed into a complete "frame structure", which ensured that the equipment could effectively prevent vibration and deformation during high-speed start-up, shutdown, and operation, and ensured the stability and positioning accuracy of the operation.

[0027] Based on the above structural design of the double-column stacker crane, this application also proposes the following assembly method for the double-column stacker crane: The double-column stacker crane consists of two sets of columns 1, an upper crossbeam 2 and a lower crossbeam 3 connected to each other to form an overall frame. The vertical ends of each set of columns 1 are fixedly connected to the upper crossbeam 2 and the lower crossbeam 3 through a set of connecting seats 5. Each column 1 consists of two sets of parallel and vertically arranged aluminum alloy profiles 11. Two rows of diagonal braces 12 are connected between the two sets of profiles 11, each row including a set of diagonal braces 12 that are axially fixed from end to end. The ends of each set of diagonal braces 12 form the same clamping force with the same force in the inward and outward directions of the same mounting stiffener 11-2, thus forming an integral composite truss column structure and stress distribution.

[0028] Specifically, when assembling each set of columns 1, two rows of diagonal braces 12 are connected between the two sets of profiles 11. The bent ends 12-3 of any set of diagonal braces 12 in a row are respectively attached to one side of the mounting stiffener 11-2 located on the same side (either on the front or the back side) of the two sets of profiles 11. The bent ends 12-3 of the front and rear diagonal braces 12 in the same row, which are axially fixed to the diagonal braces 12, are respectively attached to the other side of the mounting stiffener 11-2. The bent ends 12-3 of the diagonal braces 12 are connected to the side of the mounting stiffener 11-2 by bolts with flanged fixing surfaces passing through mounting screw holes 12-4.

[0029] Furthermore, when the trapezoidal groove head 11-4 is inserted into the slot 12-5 and the two bent ends 12-3 of the diagonal tie rod 12 are fixedly connected to the profile 11 by bolts, the bent ends 12-3 of the diagonal tie rod 12 are connected to the profile 11 at 90°; moreover, the bent ends 12-3 are larger in size and thicker in material than the middle part of the rod body 12-1.

[0030] When the column 1 is installed on the connecting seat 5, the array of toothed plates 14 are pre-inserted vertically into the first mounting groove 11-1, the second mounting groove 11-3 and the cavity 11-6 adjacent to the first mounting groove 11-1, and the two sets of mounting ribs 11-2 of a set of profiles 11 are inserted into the positioning groove 52, at which time the main body 11-0 of the profile 11 is in contact with the side of the seat box 50; Using fastening bolts 14, which pass through the first mounting groove 11-1, the toothed plate 13 in the chamber 11-6, and the side of the seat 50, the bolt tightening force is effectively transmitted to the entire cross-section body 11-0 and the side of the seat 50, thereby fastening the long sides of the two sets of cross-section bodies 11-0 to two of the four sides of the seat 50 respectively; in addition, using fastening bolts 14, which pass through the support seat 51, the toothed plate 13 in the second mounting groove 11-3, and the side of the seat 50, the bolt tightening force is effectively transmitted to the short side of the entire cross-section body 11-0, thereby fastening the mounting ribs 11-2 of the two sets of cross-section bodies 11-0 to the other two of the four sides of the seat 50 and the support seat 51 in sequence.

[0031] When the connecting seat 5 is installed on the upper crossbeam 2 and the lower crossbeam 3, the side of the connecting seat 5 and the support seat 51 are respectively aligned with the mounting planes of the upper crossbeam 2 and the lower crossbeam 3. The fastening bolts 14 are used to pass through the mounting screw holes 53 on the support seat 51 and the seat box 50, as well as the flange holes on the upper crossbeam 2 and the lower crossbeam 3, so that the connecting seat 5 after connecting the column 1 is respectively installed on the upper crossbeam 2 and the lower crossbeam 3. Finally, the precise positioning of the vertical ends of each column 1 with the upper and lower crossbeams 2 and 3, the verticality of the columns, and the modular installation process were completed through the two sets of connecting seats 5. The bolts were tightened and the preload applied could generate huge normal pressure between the column 1 and the upper and lower crossbeams 2 and 3, thus forming a rigid connection. The columns and crossbeams were transformed into a complete "frame structure", which ensured that the equipment could effectively prevent vibration and deformation during high-speed start-up, shutdown, and operation, and ensured the stability and positioning accuracy of the operation.

[0032] As described above, the embodiments given in conjunction with the accompanying drawings are merely preferred solutions for achieving the objectives of this invention. Those skilled in the art can draw inspiration from this and directly derive other alternative structures that conform to the design concept of this invention. Other structural features derived therefrom should also fall within the scope of the solutions described in this invention.

Claims

1. A double-column stacker crane, comprising two sets of columns, an upper crossbeam, and a lower crossbeam interconnected to form an integral frame structure, wherein a drive assembly is provided on the lower crossbeam to suspend a loading platform and move vertically between the two sets of columns, characterized in that: The top and bottom of each set of columns are fixedly connected to the upper and lower crossbeams by a set of connecting seats; Each set of columns has two sets of parallel and vertically arranged aluminum alloy profiles, and two rows of diagonal tie rods, each row including a set of axially fixed ends, are connected between the two sets of profiles.

2. The double-column stacker crane according to claim 1, characterized in that: The profile has a rectangular hollow cross-section. Two sets of recessed first mounting grooves are symmetrically arranged on one long side of the cross-section. Two sets of mounting ribs perpendicular to the long side are symmetrically arranged on the other long side. A set of recessed second mounting grooves is arranged on the side of each set of mounting ribs. Two sets of symmetrically arranged trapezoidal grooves are arranged at the outer end of each set of mounting ribs.

3. The double-column stacker crane according to claim 2, characterized in that: The main cross-section has several continuously distributed, sealed chambers inside its cavity, which are divided by longitudinal and transverse reinforcing ribs.

4. The double-column stacker crane according to claim 1, characterized in that: The aforementioned tie rod has two sets of identical rods integrally cast from aluminum alloy material, each set of rods having a rod groove; both ends of each set of rods are bent at the same angle in a counterclockwise direction to form bent ends with mounting screw holes, and the inner side of the bent ends is provided with a set of slots for connecting trapezoidal groove heads.

5. The double-column stacker crane according to claim 4, characterized in that: When the trapezoidal groove head is inserted into the slot and the two bent ends of the diagonal tie rod are fixed to the profile by bolts, the bent ends of the diagonal tie rod are connected to the profile at 90°; the bent ends are larger in size and thicker in material than the middle part of the rod.

6. The double-column stacker crane according to claim 2, characterized in that: When connecting two sets of diagonal braces in the front and rear columns between two sets of profiles, the bent ends of any set of diagonal braces in a column are respectively attached to one side of the mounting stiffener plate located on the same side in the two sets of profiles. The bent ends of the front set of diagonal braces and the rear set of diagonal braces in the column that are axially fixed to the diagonal braces are respectively attached to the other side of the mounting stiffener plate. The two bent ends of the diagonal tie rod are connected to the side of the mounting stiffener plate by bolts with flanged fixing surfaces passing through mounting bolt holes. The bolts are pre-tightened by locking nuts with non-metallic inserts at the outer ends.

7. The double-column stacker crane according to claim 1, characterized in that: The connecting seat includes a seat box that is a hollow box-type welded part. Two of the four sides of the seat box are fixedly connected to L-shaped support seats. An array of mounting screw holes is provided on the other two of the four sides. A vertical positioning groove is formed between the side of the seat and the support base. The support base is provided with a series of mounting screw holes and reinforcing ribs that mate with the flange holes of the upper and lower crossbeams.

8. A method for assembling a double-column stacker crane using any one of claims 1 to 7, characterized in that: The double-column stacker crane consists of two sets of columns, an upper crossbeam, and a lower crossbeam connected to each other to form an overall frame. The vertical ends of each set of columns are fixedly connected to the upper crossbeam and the lower crossbeam through a set of connecting seats. Each set of columns consists of two sets of parallel, opposite, and vertically arranged aluminum alloy profiles. Between the two sets of profiles are two rows of diagonal braces, each row including a set of diagonal braces that are axially fixed from end to end. The ends of each set of diagonal braces form the same clamping force with the same force in opposite directions on the same mounting rib.

9. The assembly method of the double-column stacker crane according to claim 8, characterized in that: When assembling each set of columns, connect two rows of diagonal braces between the two sets of profiles; the bent ends of any set of diagonal braces in a row are respectively attached to one side of the mounting stiffener on the same side of the two sets of profiles; the bent ends of the first and second sets of diagonal braces in the same row, which are axially fixed to the diagonal braces, are respectively attached to the other side of the mounting stiffener; the bent ends of the diagonal braces are connected to the side of the mounting stiffener by bolts with flanged fixing surfaces passing through mounting screw holes.

10. The assembly method of the double-column stacker crane according to claim 9, characterized in that: When the trapezoidal groove head is inserted into the slot and the two bent ends of the diagonal tie rod are fixed to the profile by bolts, the bent ends of the diagonal tie rod are connected to the profile at 90°; the bent ends are larger in size and thicker in material than the middle part of the rod.

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