Split lower cross beam and stacker

Abstract

The utility model relates to the technical field of stacking machine, concretely relates to a split type lower crossbeam and stacking machine, including installation subassembly, installation subassembly includes the crossbeam body that sets along the length direction of ground rail, and the both ends of crossbeam body are connected with installation horizontal plate respectively, and the roller wheel group that forms detachable connection with installation horizontal plate respectively, and the installation horizontal plate is driven along the length direction of ground rail and moves by roller wheel group, and the roller wheel group forms the upward support to installation horizontal plate to exert the upward support force Fa to installation horizontal plate, the utility model discloses the both ends of crossbeam body are set up installation horizontal plate respectively, and the detachable bolt connection is formed with roller wheel group through installation horizontal plate simultaneously, so that installation horizontal plate exerts the downward pressure to the top of roller wheel group, and then the top of roller wheel group exerts the upward support force Fa to installation horizontal plate and crossbeam body, reduces the shear force that roller wheel group bears, and then avoids the shear deformation of bolt, reduces the difficulty of roller wheel group dismounting.

Description

Technical Field

[0001] This utility model relates to the field of stacker crane technology, specifically to a split-type lower crossbeam and stacker crane. Background Technology

[0002] Stacker cranes, as core equipment in automated storage and retrieval systems (AS / RS), have a main structure consisting of an upper crossbeam, columns, and a lower crossbeam forming a rigid mast. The columns connect to a loading platform for lifting and lowering goods, while the loading platform connects to a horizontally moving structure that moves along the aisles to store and retrieve goods. The lower crossbeam, located at the bottom of the machine, serves as a load-bearing foundation, motion guide, and mechanism integration platform. It uses drive wheel sets, driven wheel sets, and horizontal guide wheel sets to clamp the ground rails, ensuring the stacker crane moves horizontally along the aisles without deviation. However, in current mainstream lower crossbeam designs, the drive wheel mounting bases and driven wheel mounting bases are fixedly connected to the load-bearing crossbeam body using an integral welding process. This requires lifting the entire machine and sequentially disassembling and separating the drive wheel, bearings, and drive wheel mounting bases when maintaining the drive or driven wheels, increasing maintenance difficulty.

[0003] Chinese patent CN210311996U discloses a lower crossbeam suitable for a single-column stacker crane, which is arranged parallel to the ground rail directly above it. The lower crossbeam is a split structure, including a beam body, a left roller seat, and a right roller seat. The left roller seat houses a driven roller that is always abutting against the ground rail; the right roller seat houses an active roller that is always abutting against the ground rail, driven by a motor. Both the left and right roller seats are fixed to the left and right ends of the beam body by flange connections. This design allows for easy maintenance and replacement of the rollers; simply lifting one end of the lower crossbeam allows for complete removal of the roller seat, moving the wheel removal work to the repair shop and improving the convenience and speed of maintenance and replacement. However, in this patent, the roller mounting base and the beam body are fixedly connected by flanges and bolts, so the weight of the whole machine is borne by the flanges and bolts. This results in extremely high shear force on the bolts, making them prone to shear deformation. Once the bolts are deformed, they are extremely difficult to remove, which increases the difficulty of disassembling the roller mounting base and the difficulty of maintenance and replacement. Utility Model Content

[0004] This utility model addresses the problem in existing solutions where bolts are prone to deformation, thus increasing the difficulty of roller disassembly. It provides a split-type lower crossbeam and stacker crane, with the specific technical solution as follows: A split-type lower crossbeam includes: a mounting assembly, the mounting assembly including a crossbeam body arranged along the length direction of a ground rail, the two ends of the crossbeam body being connected to mounting plates respectively; and a roller assembly that is detachably connected to the mounting plates respectively, the roller assembly driving the mounting plates to move along the length direction of the ground rail, the roller assembly providing upward support to the mounting plates to apply an upward support force Fa to the mounting plates.

[0005] Furthermore, the roller assembly includes a mounting plate for mounting the drive wheel or driven wheel. The mounting plate is arranged parallel to both ends of the drive wheel or driven wheel along the axial direction. The top of the mounting plate is connected to a mounting cross plate to apply an upward supporting force Fa to the mounting cross plate.

[0006] Preferably, the axial direction of the drive wheel or the driven wheel is perpendicular to the length direction of the ground rail, and the radial side of the drive wheel and the driven wheel are tangent to the top surface of the ground rail; the drive wheel is connected to a power component that outputs torque, and the drive wheel pushes the mounting assembly and the driven wheel to move along the ground rail.

[0007] Preferably, the mounting assembly further includes mounting vertical plates disposed at both ends of the crossbeam body. The mounting vertical plates are perpendicular to the length direction of the crossbeam body, and the mounting vertical plates are connected to the side walls of the mounting thick plate. The mounting vertical plates and the mounting horizontal plates are connected to form an L-shaped cavity, and the L-shaped cavity is connected to the mounting thick plate.

[0008] Preferably, the mounting assembly further includes: an upper limit block disposed between the mounting thick plate and the mounting horizontal plate, wherein grooves are formed at the connection positions of the mounting thick plate and the mounting horizontal plate to fix the upper limit block, and the upper limit block can restrict the relative movement of the crossbeam body and the roller assembly along the length direction; and a lower limit block disposed between the mounting thick plate and the mounting vertical plate, wherein grooves are formed at the connection positions of the mounting thick plate and the mounting horizontal plate to fix the lower limit block, the height direction being perpendicular to the length direction of the crossbeam body, and the lower limit block can restrict the relative movement of the crossbeam body and the roller assembly along the height direction.

[0009] Preferably, it also includes a horizontal guide wheel assembly, which includes a mounting bracket connected to the side of the roller assembly and a guide wheel connected to the mounting bracket; the guide wheels are symmetrically arranged on the two lateral sides of the ground rail, and the radial side of the guide wheel is tangent to the lateral side of the ground rail to form a lateral limit on the mounting assembly and the roller assembly.

[0010] Preferably, the plane on which the horizontal plate is installed is parallel to the length direction of the beam body, the supporting force Fa is perpendicular to the plane on which the horizontal plate is installed, and the direction of the supporting force Fa is away from the ground rail.

[0011] A stacker crane includes a split-type lower crossbeam.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects: This utility model provides mounting plates at both ends of the crossbeam body, and the mounting plates are connected to the roller assembly by detachable bolts. This allows the mounting plates to apply downward pressure to the top of the roller assembly, and the top of the roller assembly to apply upward support force Fa to the mounting plates and the crossbeam body. This reduces the shear force on the roller assembly, thereby preventing shear deformation of the bolts and reducing the difficulty of disassembling the roller assembly. Attached Figure Description

[0013] Figure 1 This is a front view of the stacker crane according to Embodiment 2 of this utility model; Figure 2 for Figure 1 Enlarged view of the structure at point A in the image; Figure 3 for Figure 2 Enlarged view of the structure at point B in the image; Figure 4 This is a schematic diagram of the stacker crane structure according to Embodiment 2 of this utility model; Figure 5 for Figure 4 Enlarged view of the structure at point C in the image; Figure 6 for Figure 5 Enlarged view of the structure at point D in the image.

[0014] In the diagram: 1. Mounting components; 12. Crossbeam body; 13. Mounting horizontal plate; 14. Mounting vertical plate; 15. Upper limit block; 16. Lower limit block; 17. Horizontal bolt; 18. Vertical bolt; 2. Roller assembly; 21. Drive wheel; 22. Driven wheel; 23. Mounting thick plate; 3. Horizontal guide wheel assembly; 31. Guide wheel; 32. Mounting bracket; 4. Ground rail; 5. Column; 6. Upper crossbeam; 7. Loading platform; 8. Horizontal bracket. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Example 1 like Figure 2 and Figure 3 As shown, this embodiment is a split-type lower crossbeam, including: a mounting assembly 1, which includes a crossbeam body 12 arranged along the length of the ground rail 4, with both ends of the crossbeam body 12 connected to a mounting plate 13; and roller sets 2 that are detachably connected to the mounting plate 13. The roller sets 2 drive the mounting plate 13 to move along the length of the ground rail 4, and the roller sets 2 provide upward support to the mounting plate 13 to apply an upward support force Fa to the mounting plate 13.

[0018] Specifically, the ground track 4 is bolted to the floor of the automated warehouse and is placed horizontally. In this embodiment, an I-beam is used, with its crossbeams being I-shaped. The length direction of the beam body 12 is consistent with the length direction of the ground track 4, ensuring that the beam body 12 is placed horizontally. The roller assembly 2 is connected to the beam body 12 via a mounting plate 13, thereby driving it to move along the top of the ground track 4 in the direction of its length. Furthermore, the mounting plate 13 is welded to both ends of the beam body 12 to improve the connection strength. The mounting plate 13 and the roller assembly 2 are connected by vertical bolts 18, allowing the roller assembly 2 to drive the mounting plate 13 and the beam body 12 to move along the ground track 4. Maintenance can be performed by disassembling the vertical bolts 18, thus making this embodiment a modular and easily maintainable structure.

[0019] The top of the roller assembly 2 is connected to the bottom of the mounting plate 13 by vertical bolts 18. The angle between the contact surface of the two and the length direction of the beam body 12 is less than 90°, so that the support force Fa applied by the roller assembly 2 to the mounting plate 13 is obliquely upward. The support force Fa can be decomposed into a vertical upward component perpendicular to the beam body 12 and a horizontal component parallel to the beam body 12. In the preferred embodiment, the mounting plate 13 is placed horizontally, so that the supporting force Fa of the roller assembly 2 on the mounting plate 13 is vertically upward. Secondly, the angle between the center line of the vertical bolt 18 and the vertical direction is less than 90°. In the preferred embodiment, the center line of the vertical bolt 18 is perpendicular to the length direction of the beam body 12 and parallel to the line of action of the supporting force Fa, so that the vertical bolt 18 does not bear the lateral shear force, avoiding shear deformation. Therefore, when maintaining or replacing the driven wheel 22 or the driving wheel 21, only one end of the beam body 12 needs to be lifted, and the vertical bolt 18 at the left or right end needs to be removed. Then, the roller assembly 2 at the left or right end can be separated from the mounting plate 13, and the removed roller assembly 2 can be transported to the repair workshop for repair. This improves the efficiency of maintenance and replacement and reduces the occurrence of accidents caused by deformation of the connecting bolts, which increases the difficulty of disassembly.

[0020] Furthermore, the roller assembly 2 includes a mounting plate 23 for mounting the drive wheel 21 or the driven wheel 22. The mounting plate 23 is arranged parallel to both ends of the drive wheel 21 or the driven wheel 22 along the axial direction. The top of the mounting plate 23 is connected to the mounting cross plate 13 to apply an upward support force Fa to the mounting cross plate 13.

[0021] Specifically, the roller assembly 2 is connected to both ends of the crossbeam body 12 by bolts, thereby driving the crossbeam body 12 to move along the ground rail 4; secondly, the mounting plate 13 at the left or right end is fixedly connected to a pair of mounting thick plates 23 by vertical bolts 18. The pair of mounting thick plates 23 are arranged in parallel and a drive wheel 21 or driven wheel 22 is arranged in the middle. The drive wheel 21 or driven wheel 22 is rotatably connected to the mounting thick plate 23 through a rotating shaft and bearing. The drive wheel 21 or driven wheel 22 is also connected to the top surface of the ground rail 4, so that the ground rail 4 applies an upward supporting force to the drive wheel 21 or driven wheel 22, thereby applying an upward supporting force to the mounting thick plate 23, and then the mounting thick plate 23 applies an upward supporting force Fa to the mounting plate 13. In the preferred embodiment, the line of action of the supporting force Fa is perpendicular to the crossbeam body 12 and the ground rail 4, so that the vertical bolt 18 is not subject to lateral shear force.

[0022] Secondly, a single mounting base for fixing the vertical bolt 18 is formed on the top of the mounting plate 23. The single vertical bolt 18 passes through the mounting side of the top and is fixedly connected to the mounting horizontal plate 13, thereby shortening the required length of the vertical bolt 18 and reducing the installation difficulty of the vertical bolt 18. The mounting plates 23 on both sides of the drive wheel 21 or driven wheel 22 are fixedly connected to the mounting horizontal plate 13 by a single vertical bolt 18 to achieve vertical fixing limit.

[0023] like Figure 4 , Figure 5 and Figure 6 As shown, the axial direction of the drive wheel 21 or the driven wheel 22 is perpendicular to the length direction of the ground rail 4, and the radial side of the drive wheel 21 and the driven wheel 22 is tangent to the top surface of the ground rail 4; the drive wheel 21 is connected to a power component that outputs torque, and the drive wheel 21 pushes the mounting assembly 1 and the driven wheel 22 to move along the ground rail 4.

[0024] Specifically, the drive wheel 21 and the driven wheel 22 are rotatably connected to the mounting plates 23 at both ends. The drive wheel 21 drives the rotating shaft to rotate by outputting torque through the drive motor, and thus drives the drive wheel 21 to rotate. The axes of the drive wheel 21 and the driven wheel 22 are perpendicular to the crossbeam body 12, and their radial sides are tangent to the ground rail 4, so that the bottom of the crossbeam body 12 is separated from the top of the ground rail 4, so that the drive wheel 21 can drive the driven wheel 22 to roll along the ground rail 4, and thus the mounting assembly 1 moves along the ground rail 4.

[0025] Furthermore, the mounting assembly 1 also includes mounting vertical plates 14 disposed at both ends of the crossbeam body 12. The mounting vertical plates 14 are perpendicular to the length direction of the crossbeam body 12. The mounting vertical plates 14 are connected to the side wall of the mounting thick plate 23. The mounting vertical plates 14 are connected to the mounting horizontal plate 13 to form an L-shaped cavity. The L-shaped cavity is connected to the mounting thick plate 23.

[0026] Specifically, the vertical mounting plate 14 is fixedly connected to both ends of the crossbeam body 12 by welding to improve the connection strength between the two. It is perpendicular to the length direction of the crossbeam body 12 and coincides with the end faces of the crossbeam body 12 respectively, so that the vertical mounting plate 14 is perpendicular to the ground rail 4 and forms an integral structure with the crossbeam body 12. Secondly, the vertical mounting plate 14 is fixedly connected to the vertical mounting side of the mounting thick plate 23 by transverse bolts 17. The center line of the transverse bolts 17 is perpendicular to the end face of the vertical mounting plate 14. The vertical mounting side of the mounting thick plate 23 forms a single bolt mounting seat. The transverse bolts 17 pass through the bolt mounting seat and are fixedly connected to the vertical mounting plate 14. The mounting thick plates 23 on both sides of the drive wheel 21 or driven wheel 22 are fixedly connected to the vertical mounting plate 14 by transverse bolts 17, so that the roller assembly 2 is horizontally fixed to the mounting component 1, thereby enabling the roller assembly 2 to push the mounting component 1 to move along the ground rail 4.

[0027] Secondly, since the top of the mounting plate 23 is fixedly connected to the mounting plate 23, the tendency of the mounting plate 23 and the mounting vertical plate 14 to undergo vertical relative displacement is reduced, the shear force on the transverse bolt 17 is reduced, and thus the shear deformation is reduced. As a result, it is difficult for both the transverse bolt 17 and the vertical bolt 18 to undergo shear deformation. This ensures the load-bearing capacity of this embodiment while reducing the probability of bolt damage, and thus reduces the difficulty of separating the roller assembly 2 and the mounting component 1.

[0028] Secondly, the mounting vertical plate 14 and the mounting horizontal plate 13 are fixedly connected by welding or bolts to form an L-shaped cavity. The inner side of the L-shaped cavity coincides with the mounting side of the mounting thick plate 23, and the two are completely fixed by the horizontal bolt 17 and the vertical bolt 18. In the preferred embodiment, the mounting vertical plate 14 and the mounting horizontal plate 13 are perpendicular to each other, so that the inner sides of the L-shaped cavity are perpendicular to each other, and the mounting side of the mounting thick plate 23 is perpendicular to each other. This ensures that the horizontal bolt 17 and the vertical bolt 18 are not subjected to shear force, thus preventing shear deformation and improving their service life. This also reduces the difficulty of disassembling the roller assembly 2.

[0029] Furthermore, the mounting assembly 1 also includes: an upper limit block 15 disposed between the mounting thick plate 23 and the mounting horizontal plate 13, wherein grooves are formed at the contact positions of the mounting thick plate 23 and the mounting horizontal plate 13 to fix the upper limit block 15, and the upper limit block 15 can restrict the relative movement of the crossbeam body 12 and the roller assembly 2 along the length direction; and a lower limit block 16 disposed between the mounting thick plate 23 and the mounting vertical plate 14, wherein grooves are formed at the connection positions of the mounting thick plate 23 and the mounting horizontal plate 13 to fix the lower limit block 16, wherein the height direction is perpendicular to the length direction of the crossbeam body 12, and the lower limit block 16 can restrict the relative movement of the crossbeam body 12 and the roller assembly 2 along the height direction.

[0030] Specifically, the bottom of the mounting horizontal plate 13 and the top of the mounting thick plate 23 form a concave groove at their contact points. The upper limit block 15 is fixedly connected to the groove at the bottom of the mounting horizontal plate 13 by bolts, and its protruding portion from the bottom of the mounting horizontal plate 13 is embedded in the groove at the top of the mounting thick plate 23. During assembly, the operator first assembles the upper limit block 15, and then assembles the mounting thick plate 23, thus fixing the position between the mounting thick plate 23 and the mounting horizontal plate 13, reducing the difficulty of installation and positioning, and improving the fixing effect. The portion of the mounting vertical plate 14 facing the mounting thick plate 23 is its end, and the portion of the mounting thick plate 23 facing the end of the mounting vertical plate 14 is its side. Grooves are formed at the contact positions of the end of plate 14 and the side of mounting thick plate 23. The lower limit block 16 is fixedly connected to the groove at the end of mounting vertical plate 14 by bolts. The part of the lower limit block 16 protruding from the end of mounting vertical plate 14 is embedded in the groove on the side of mounting thick plate 23. During the assembly process, the operator first fixes mounting thick plate 23 by mounting horizontal plate 13, then fixes mounting thick plate 23 to mounting vertical plate 14, and then embeds the lower limit block 16 into the groove formed by the two and fixes it to the end of mounting vertical plate 14 by bolts. This fixes the position between mounting thick plate 23 and mounting vertical plate 14, reduces the difficulty of installation and positioning, and improves the fixing effect.

[0031] Furthermore, this embodiment also includes a horizontal guide wheel assembly 3, which includes a mounting bracket 32 ​​connected to the side of the roller wheel assembly 2, and a guide wheel 31 connected to the mounting bracket 32. The guide wheels 31 are symmetrically arranged on the two lateral sides of the ground rail 4, and the radial side of the guide wheel 31 is tangent to the lateral side of the ground rail 4 to form a lateral limit on the mounting assembly 1 and the roller wheel assembly 2.

[0032] Specifically, the roller assembly 2 at the left or right end is connected to the horizontal guide wheel assembly 3; the horizontal guide wheel assembly 3 is a symmetrical structure, with its symmetrical plane being the transverse center plane of the drive wheel 21 or the driven wheel 22. The two ends of the mounting bracket 32 ​​form a wide U-shaped fixing structure and a narrow U-shaped fixing structure, respectively. The two ends of the wide U-shaped fixing structure are respectively externally fixed to a pair of mounting plates 23, and the connection method is bolt connection. The narrow U-shaped fixing structure is away from the roller assembly 2, and its two ends are respectively connected to symmetrically arranged guide wheels 31. The axis of the guide wheels 31 is parallel to the ground rail 4. The radial sides of the vertically and symmetrically arranged guide wheels 31 are tangent to the top two sides of the ground rail 4. The guide wheels 31 are fixed by the fixing relationship with the mounting plate 23. The guide wheels 31 in the fixed position are fixed to the roller assembly 2 and the mounting component 1 by the fixing relationship with the ground rail 4. When the drive wheel 21 drives the guide wheels 31 to roll along the side of the ground rail 4, it can limit the movement trajectory of the roller assembly 2 and the mounting component 1 to only the shape of the ground rail 4 and prevent them from moving laterally relative to the ground rail 4, thereby ensuring the movement accuracy of the crossbeam body 12.

[0033] Example 2 like Figure 1 and Figure 3 As shown, this embodiment 2 is a stacker crane. Its main structure consists of an upper crossbeam 6, a column 5, and a split lower crossbeam forming a rigid gantry. The split lower crossbeam can move the column 5, the upper crossbeam 6, and the loading platform 7 along a fixed trajectory. The column 5 is connected to the loading platform 7 through a hoisting mechanism to lift and lower goods. The loading platform 7 is connected to a horizontally movable horizontal support 8 to store and retrieve goods from the automated warehouse. The horizontal support 8 can move horizontally through a linear transmission mechanism such as a gear and rack transmission mechanism.

[0034] Specifically, the split-type lower crossbeam includes a mounting assembly 1, a roller assembly 2, and a horizontal guide wheel assembly 3. Both ends of the mounting assembly 1 are fixedly connected to the uprights 5, and the uprights 5 are fixedly connected to both ends of the upper crossbeam 6, thus forming a rigid gantry. The loading platform 7 is slidably connected to the uprights 5. The horizontal support 8 moves horizontally along the loading platform 7 via a cylinder, hydraulic cylinder, or rack and pinion transmission mechanism, thereby retrieving or placing goods from the automated warehouse. The roller assembly 2 moves along the ground rail 4, thereby driving the uprights 5, the upper crossbeam 6, the loading platform 7, and the horizontal support. 8 moves horizontally along the ground rail 4. The total weight of the column 5, upper crossbeam 6, loading platform 7, and horizontal support 8 is all applied to the crossbeam body 12, and then to the roller assembly 2. The mounting horizontal plate 13 and mounting vertical plate 14 are fixedly connected to the crossbeam body 12 by welding to improve the structural strength, thereby ensuring that the two do not deform. At the same time, no shear force is applied to the horizontal bolt 17 and vertical bolt 18, avoiding shear deformation. This facilitates the disassembly of the roller assembly 2 for maintenance or replacement, ensuring the load-bearing capacity of the split lower crossbeam while reducing its maintenance difficulty.

[0035] When goods need to be moved to the automated warehouse for storage, the roller assembly 2 drives the column 5 to move along the ground rail 4. The column 5 drives the loading platform 7 to rise through the hoisting mechanism, thereby raising the goods and the horizontal support 8. The horizontal support 8 drives the rack to move through the rotation of gears, thereby moving the goods closer to the automated warehouse until the goods are stored in the automated warehouse. When goods need to be moved out of the automated warehouse, the horizontal support 8 drives the rack to move through the rotation of gears, moving the goods to the loading platform 7. The loading platform 7 descends through the column 5, and the column 5 moves to the designated position through the roller assembly 2.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0037] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A split-type lower crossbeam, characterized in that, include: Mounting assembly (1), the mounting assembly (1) including a crossbeam body (12) arranged along the length direction of the ground rail (4), the two ends of the crossbeam body (12) being connected to the mounting plate (13); and Roller sets (2) are detachably connected to the mounting plate (13). The roller sets (2) drive the mounting plate (13) to move along the length direction of the ground rail (4). The roller sets (2) provide upward support to the mounting plate (13) to apply an upward support force Fa to the mounting plate (13).

2. The split-type lower crossbeam according to claim 1, characterized in that: The roller assembly (2) includes a mounting plate (23) for mounting a drive wheel (21) or a driven wheel (22). The mounting plate (23) is arranged parallel to both ends of the drive wheel (21) or the driven wheel (22). The top of the mounting plate (23) is connected to the mounting cross plate (13) to apply an upward support force Fa to the mounting cross plate (13).

3. The split-type lower crossbeam according to claim 2, characterized in that: The axial direction of the drive wheel (21) or the driven wheel (22) is perpendicular to the length direction of the ground rail (4), and the radial side of the drive wheel (21) and the driven wheel (22) is tangent to the top surface of the ground rail (4); The drive wheel (21) is connected to a power component that outputs torque, and the drive wheel (21) drives the mounting assembly (1) and the driven wheel (22) to move along the ground rail (4).

4. The split-type lower crossbeam according to claim 3, characterized in that: The mounting assembly (1) further includes mounting vertical plates (14) disposed at both ends of the crossbeam body (12). The mounting vertical plates (14) are perpendicular to the length direction of the crossbeam body (12). The mounting vertical plates (14) are connected to the side wall of the mounting thick plate (23). The mounting vertical plates (14) are connected to the mounting horizontal plate (13) to form an L-shaped cavity. The L-shaped cavity is connected to the mounting thick plate (23).

5. The split-type lower crossbeam according to claim 4, characterized in that: The installation component (1) also includes: An upper limit block (15) is disposed between the mounting thick plate (23) and the mounting horizontal plate (13). Grooves are formed at the connection points of the mounting thick plate (23) and the mounting horizontal plate (13) to fix the upper limit block (15). The upper limit block (15) can restrict the relative movement of the beam body (12) and the roller assembly (2) along the length direction. A lower limit block (16) is provided between the mounting thick plate (23) and the mounting vertical plate (14). The mounting thick plate (23) and the mounting horizontal plate (13) are respectively connected to form grooves to fix the lower limit block (16). The height direction is perpendicular to the length direction of the beam body (12). The lower limit block (16) can restrict the relative movement of the beam body (12) and the roller assembly (2) along the height direction.

6. The split-type lower crossbeam according to claim 1, characterized in that, It also includes a horizontal guide wheel assembly (3), which includes a mounting bracket (32) connected to the side of the roller assembly (2) and a guide wheel (31) connected to the mounting bracket (32); The guide wheels (31) are symmetrically arranged on the two lateral sides of the ground rail (4). The radial side of the guide wheels (31) is tangent to the lateral side of the ground rail (4) to form a lateral limit on the mounting assembly (1) and the roller assembly (2).

7. The split-type lower crossbeam according to claim 1, characterized in that: The plane of the mounting plate (13) is parallel to the length direction of the beam body (12), the supporting force Fa is perpendicular to the plane of the mounting plate (13), and the direction of the supporting force Fa is away from the ground rail (4).

8. A stacker crane, characterized in that: Includes the split lower crossbeam as described in any one of claims 1 to 7.

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