Anti-falling method and device for cargo carrying table of stacking machine

Abstract

The invention relates to the technical field of stacking machines, and discloses a stacking machine cargo carrying table anti-falling method and device.The stacking machine cargo carrying table anti-falling device comprises a movable platform, and a telescopic pallet fork used for carrying cargoes and a bundling assembly used for bundling and fixing the cargoes are fixedly arranged in the movable platform; limiting assemblies used for preventing goods from toppling over during carrying and preventing the bundling assembly from deviating are arranged on the two sides of the telescopic pallet fork. Lateral pre-limiting, self-adaptive flexible constraint, stable transportation and automatic constraint removal are organically combined into a set of coherent automatic process, active falling prevention of the stacking machine in the whole process of goods taking, goods transporting and unloading is achieved, and a stable and reliable self-adaptive constraint frame is formed through the synergistic effect of the rope and the supporting rod; the gap between the goods and the goods carrying table is effectively eliminated, and the sliding and overturning risks are completely eradicated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stacker, in particular to a stacker cargo platform anti-falling method and device. BACKGROUND

[0002] As the core equipment in modern automated warehouse logistics system, the stability and safety of the stacker cargo platform are directly related to the efficient and reliable operation of the entire system. The main function of the cargo platform is to store and transport unitized goods through telescopic forks.

[0003] In actual operation, especially during high-speed operation, lifting or emergency braking, the goods will slide or overturn due to inertia. In a high-position warehouse environment, once a cargo falling accident occurs, not only the goods will be damaged, but also serious equipment chain damage and personal safety accidents may be caused.

[0004] Currently, the common anti-falling measures mainly include two types: one is to set rigid guardrails or blocking rods around the cargo platform, but there is often a gap between the guardrails or blocking rods and the goods, and the restraining effect is limited, which cannot effectively inhibit the micro-motion and shaking of the goods during operation; the other is to rely on manual binding straps or wrapping film reinforcement, which is low in efficiency, and the binding quality is greatly affected by human factors, and the consistency and reliability are difficult to guarantee, and there is a risk of failure due to loose binding.

[0005] In view of the above problems, the present application provides a solution. SUMMARY

[0006] To solve the problems raised in the background art, the present application provides a stacker cargo platform anti-falling method and device, which has the characteristics of good anti-falling effect.

[0007] To achieve the above purpose, the first aspect of the present application provides a stacker cargo platform anti-falling device: including a moving assembly, the moving assembly includes a fixed frame, the bottom of the fixed frame is fixedly provided with a moving seat for moving, the fixed frame is movably provided with a moving platform for carrying goods, the moving platform is fixedly provided with telescopic forks for carrying goods and a binding assembly for binding and fixing the goods, and the telescopic forks are provided with limiting assemblies on both sides for avoiding the goods from falling during carrying and avoiding the binding assembly from deviating.

[0008] Further, the binding assembly includes a rotating shaft and a fixed shaft, the rotating shaft is movably installed at opposite corners of the entrance side of the moving platform, the fixed shaft is fixedly installed at opposite corners of the side away from the entrance of the moving platform, the rotating shaft is fixedly installed with a driving ratchet, when the telescopic forks carry the goods, the goods on both sides abut against the driving ratchet and drive the driving ratchet to rotate, the moving platform is movably installed with a pawl engaged with the driving ratchet, and the moving platform is fixedly installed with a magnetic control assembly for driving the pawl and the driving ratchet to separate.

[0009] Furthermore, ropes for restraining goods are wound on the rotating shaft. The free ends of the ropes are fixedly connected to fixed shafts arranged diagonally. Multiple ropes are provided, and the multiple ropes are arranged in a cross pattern inside the mobile platform by diagonal connection to form a net-like restraint structure.

[0010] Furthermore, the magnetic control assembly includes an electromagnetic block and a movable magnetic block. The electromagnetic block is fixedly installed in the inner wall of the mobile platform, and the pawl is movably installed in the inner wall of the mobile platform via a rotating shaft. The pawl is located above the electromagnetic block, and the movable magnetic block is fixedly installed at the tail of the pawl.

[0011] When the electromagnetic block is energized, it generates a magnetic field. The moving magnetic block, under the attraction of the magnetic field, drives the pawl downward, thereby separating the front end of the pawl from the drive ratchet.

[0012] Furthermore, a guide chamber is provided in the inner wall of the mobile platform, and the rotating shaft is movably disposed in the guide chamber. An adjusting spring is fixedly installed at the bottom of the guide chamber, and the top of the adjusting spring is fixedly connected to the bottom of the rotating shaft. The adjusting spring is used to provide upward support force for the rotating shaft under normal conditions.

[0013] Furthermore, the limiting component includes a rotating rod located on both sides of the telescopic fork. The rotating rod is fixedly connected to the drive shaft of the telescopic fork. A drive gear is fixedly installed at one end of the rotating rod. A moving block is movably installed on the moving platform. An adjustment groove is provided on the moving block. A rack that meshes with the drive gear is fixedly installed at the bottom of the adjustment groove. A support rod is movably installed at the top of the moving block.

[0014] Furthermore, multiple support rods are provided, symmetrically arranged on the moving block. Each support rod has a rectangular surface and an arc surface. The rectangular surface is used to abut against the side of the cargo when the telescopic forks are extended. The arc surface has multiple slots, which are used to accommodate and position the corresponding rope when the rope is tensioned. The support rod and the tensioned rope cooperate to form a constraint frame surrounding the surface of the cargo.

[0015] Furthermore, the rectangular surface of the support rod is provided with an elastic pad, and the support rod is installed on the moving block through a ball joint structure, which is used to adjust the angle of the rectangular surface.

[0016] Secondly, the present invention provides a method for preventing a stacker crane loading platform from falling, which is based on the stacker crane loading platform anti-fall device and includes the following steps:

[0017] Step 1: Activate the telescopic forks to extend and pick up the goods. The limit components linked to the forks will drive the support rod to move synchronously and make the support rod abut against the side of the goods to provide initial lateral support.

[0018] Step 2: The telescopic forks return the loaded goods to the mobile platform. The goods push the drive ratchet to rotate, loosening the rope and allowing the goods to enter. After the goods are in place, the pawl locks under the meshing action of the ratchet. The tensioned rope and the support rod together form a constraint frame around the goods.

[0019] Step 3: During the movement of the stacker crane, the constraint frame is used to maintain the stability of the goods and prevent them from sliding, overturning or falling.

[0020] Step 4: After reaching the target cargo location, power on the magnetic control component to drive the pawl to separate from the drive ratchet, control the extension fork to extend, and its linkage action causes the rope to retract, the support rod to gradually separate from the rope, release the constraint on the cargo, and complete the unloading.

[0021] Furthermore, in step two, the ropes are arranged in a crisscross mesh pattern to achieve flexible wrapping of the goods in multiple directions. The slots on the support rods position the tensioned ropes and work together with the ropes to form a constraint framework.

[0022] The technical solution provided by this invention has the following advantages compared with the prior art:

[0023] 1. This invention features a binding assembly. The mesh-like restraint structure formed by crisscrossing ropes adaptively conforms to the surface of the cargo, achieving flexible, all-around wrapping. Compared to the gaps in rigid guardrails in existing technologies, this design eliminates blind spots in restraint, significantly enhances the restraint effect, and effectively prevents cargo from sliding and tipping over during operation. Furthermore, this process is automatically triggered when the cargo enters, requiring no manual intervention. This completely solves the problems of low efficiency and poor consistency associated with manual binding, achieving automation and intelligence in the fall prevention process.

[0024] 2. This invention incorporates a limiting component. Its support rod, linked with the telescopic forks, moves synchronously during loading, providing lateral support for the goods in advance. Together with the strapping component, it forms a dual protection mechanism of limiting and restraining. The slots on the support rod effectively position the ropes, preventing displacement and ensuring the stability of the restraint network. This deeply integrated design with the operational process not only provides reliable restraint but also ensures precise movement and automatic reset, significantly improving the safety and operational efficiency of the entire stacker crane system. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure during the picking up of goods in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure when the telescopic forks are extended in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the pawl and ratchet in an embodiment of the present invention;

[0030] Figure 5 for Figure 4 A structural diagram of section B;

[0031] Figure 6 This is a schematic diagram of the pawl and rotating shaft in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure during cargo transportation in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure when the telescopic forks are retracted in an embodiment of the present invention;

[0034] Figure 9 for Figure 7 A schematic diagram of the structure of part A;

[0035] Figure 10 This is a schematic diagram of the support rod in an embodiment of the present invention;

[0036] Figure 11 A flowchart is established for the picking and constraint of this invention;

[0037] Figure 12 This is a flowchart of the unloading and resetting process of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Moving component; 11. Fixed frame; 12. Moving base; 13. Moving platform; 14. Telescopic forks;

[0040] 2. Binding assembly; 21. Rotating shaft; 22. Fixed shaft; 23. Drive ratchet; 24. Pawl; 25. Rope;

[0041] 3. Limiting component; 31. Rotating rod; 32. Drive gear; 33. Moving block; 34. Adjusting groove; 35. Rack; 36. Support rod; 37. Slot;

[0042] 4. Magnetic control assembly; 41. Electromagnetic block; 42. Moving magnetic block; 43. Rotating shaft; 44. Guide chamber; 45. Adjusting spring. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] The present invention will be further described below with reference to embodiments.

[0045] Example 1

[0046] Reference Figures 1-6 The first embodiment of the present invention provides a stacker crane loading platform anti-fall device, including a moving component 1. The moving component 1 includes a fixed frame 11. A moving seat 12 for moving is fixedly provided at the bottom of the fixed frame 11. A moving platform 13 for carrying goods is movably provided in the fixed frame 11. A telescopic fork 14 for carrying goods and a binding component 2 for binding and fixing the goods are fixedly provided in the moving platform 13. Limiting components 3 are provided on both sides of the telescopic fork 14 to prevent the goods from tipping over during transportation and to prevent the binding component 2 from deviating.

[0047] The strapping assembly 2 includes a rotating shaft 21 and a fixed shaft 22. The rotating shaft 21 is movably installed at two opposite corners on the entrance side of the mobile platform 13, and the fixed shaft 22 is fixedly installed at two opposite corners on the mobile platform 13 away from the entrance side. A drive ratchet 23 is fixedly installed on the rotating shaft 21. When the telescopic forks 14 carry goods, the two sides of the goods abut against the drive ratchet 23 and drive the drive ratchet 23 to rotate. A pawl 24 that meshes with the drive ratchet 23 is movably installed in the mobile platform 13. A magnetic control assembly 4 for separating the drive pawl 24 and the drive ratchet 23 is fixedly installed in the mobile platform 13.

[0048] In actual use, after the telescopic fork 14 extends into the shelf and lifts the goods, it retracts into the moving platform 13. During this process, the two sides of the goods will come into contact with the drive ratchet 23 located at the two corners of the platform entrance. The friction between the goods and the ratchet will drive the drive ratchet 23 and its coaxial rotating shaft 21 to rotate. At this time, due to the structural characteristics of the ratchet, the pawl 24 does not obstruct the rotation of the ratchet. The direction of rotation is the direction of loosening the rope 25 wrapped on the rotating shaft 21. When the goods are completely transported to the predetermined position on the moving platform 13, they lose forward momentum. At this time, the pawl 24 effectively prevents the ratchet from rotating in the opposite direction due to the tension of the rope 25, thereby keeping the rope 25 taut. The movement of the goods themselves is used as the power source to realize the automatic triggering of the restraint action.

[0049] The rotating shaft 21 is wound with ropes 25 for restraining the goods. The free ends of the ropes 25 are fixedly connected to the fixed shafts 22 arranged diagonally. There are multiple ropes 25, which are arranged in a cross pattern inside the moving platform 13 by diagonal connection to form a net-like restraint structure.

[0050] The specific advantages of this mesh restraint structure are as follows: multiple ropes 25 are connected diagonally to form a dynamic restraint network above and to the side of the cargo. When the cargo is in place and the ropes 25 are tensioned, the network can adaptively conform to the outer contour of the cargo. Regardless of whether the cargo is centered on the platform, it can provide uniform flexible restraint force. Compared with single-point or unilateral restraint, this mesh structure greatly increases the contact area of ​​the restraint, effectively preventing the cargo from sliding and overturning in various directions under complex motion conditions, and significantly improving stability.

[0051] The rope 25 can be made of a polymer material with a certain degree of elasticity to absorb some of the impact energy while providing restraint.

[0052] The magnetic control assembly 4 includes an electromagnetic block 41 and a movable magnetic block 42. The electromagnetic block 41 is fixedly installed in the inner wall of the moving platform 13. The pawl 24 is movably installed in the inner wall of the moving platform 13 via a rotating shaft 43. The pawl 24 is located above the electromagnetic block 41, and the movable magnetic block 42 is fixedly installed at the tail of the pawl 24.

[0053] When the electromagnetic block 41 is energized, it generates a magnetic field. Under the attraction of the magnetic field, the moving magnetic block 42 drives the pawl 24 to move downward, thereby separating the front end of the pawl 24 from the drive ratchet 23.

[0054] The working principle of electromagnetic block 41 and movable magnetic block 42 is as follows:

[0055] When unloading is required, the control system energizes the electromagnetic block 41 to generate a strong magnetic field. Since the movable magnetic block 42 is fixed to the tail of the pawl 24 and is arranged opposite to the electromagnetic block 41, under the attraction of the magnetic field, the movable magnetic block 42 drives the entire pawl 24 to overcome the supporting force of the adjusting spring 45 and move downward. This action causes the front end of the pawl 24 to disengage from the teeth of the drive ratchet 23, releasing the ratchet from locking. At this time, the ratchet can freely reverse under the tension of the retracted rope 25, preparing to release the restraint.

[0056] A guide chamber 44 is provided in the inner wall of the mobile platform 13. The rotating shaft 43 is movably disposed in the guide chamber 44. An adjusting spring 45 is fixedly installed at the bottom of the guide chamber 44. The top end of the adjusting spring 45 is fixedly connected to the bottom of the rotating shaft 43. The adjusting spring 45 is used to provide upward support force for the rotating shaft 43 under normal conditions.

[0057] The guide chamber 44 provides precise vertical guidance for the rotating shaft 43 of the pawl 24, ensuring that the pawl 24 can only move up and down, thereby guaranteeing the accuracy of its engagement and disengagement with the drive ratchet 23. The function of the adjusting spring 45 is that, under normal conditions, when the electromagnetic block 41 is de-energized, the preload of the adjusting spring 45 pushes the rotating shaft 43 upward, thereby ensuring that the pawl 24 can reliably maintain engagement with the drive ratchet 23 and preventing accidental disengagement. When the electromagnetic block 41 is energized and generates a suction force, this force must be greater than the preload of the adjusting spring 45 to pull the pawl 24 downward to achieve disengagement. In addition, the preload of the adjusting spring 45 is adjustable to optimize the system's response characteristics according to different operating conditions.

[0058] In summary, the present invention, through the binding component 2 and the mesh restraint structure formed by the crisscrossing ropes 25, can adaptively conform to the surface of the goods, achieving flexible, all-around wrapping. Compared with the gaps in rigid guardrails in the prior art, this design eliminates constraint blind spots, significantly enhances the restraint effect, and effectively prevents the goods from sliding and tipping over during operation. Furthermore, this process is automatically triggered when the goods enter, requiring no manual intervention, completely solving the problems of low efficiency and poor consistency of manual binding, and realizing the automation and intelligence of the fall prevention process.

[0059] Example 2

[0060] Reference Figures 7-10 The second embodiment of the present invention provides a stacker crane loading platform anti-fall device, which also includes a limiting component 3. The limiting component 3 includes a rotating rod 31, which is located on both sides of the telescopic fork 14. The rotating rod 31 is fixedly connected to the drive shaft of the telescopic fork 14. A drive gear 32 is fixedly installed at one end of the rotating rod 31. A moving block 33 is movably installed on the moving platform 13. An adjustment groove 34 is provided on the moving block 33. A rack 35 that meshes with the drive gear 32 is fixedly installed at the bottom of the adjustment groove 34. A support rod 36 is movably installed at the top of the moving block 33.

[0061] The movement of the moving block 33 is as follows: when the telescopic fork 14 extends or retracts, its drive shaft will synchronously drive the rotating rod 31 and the drive gear 32 installed at one end of it to rotate. The drive gear 32 meshes with the rack 35 fixedly installed at the bottom of the adjusting groove 34 of the moving block 33.

[0062] Therefore, when the drive gear 32 rotates, it drives the moving block 33 to move linearly along a preset track. When the forks extend, the moving block 33 moves towards the goods. When the forks retract, the moving block 33 moves away from the goods. This achieves complete mechanical linkage between the movement of the support rod 36 and the action of the forks, without the need for an additional power source and control unit.

[0063] Multiple support rods 36 are provided, and the multiple support rods 36 are symmetrically arranged on the moving block 33. The support rods 36 are provided with rectangular surfaces and arc surfaces. The rectangular surfaces are used to abut against the side of the goods when the telescopic forks 14 are extended. The arc surfaces are provided with multiple slots 37, which are used to accommodate and position the corresponding ropes 25 when the ropes 25 are tensioned. The support rods 36 cooperate with the tensioned ropes 25 to form a constraint frame around the surface of the goods.

[0064] The rectangular surface of the support rod 36 is provided with an elastic pad. The support rod 36 is mounted on the movable block 33 through a ball joint structure, which is used to adjust the angle of the rectangular surface.

[0065] The working process of support rod 36 is divided into two stages:

[0066] The first stage is lateral pre-limiting. When the telescopic fork 14 extends to pick up the goods, the linkage mechanism drives the moving block 33 and the support rod 36 to move towards the goods, so that the rectangular surface of the support rod 36 abuts against the side of the goods in advance, providing preliminary lateral support and preventing the goods from shaking or tipping over in the early stage of handling.

[0067] The second stage is collaborative constraint. When the goods enter the platform and the rope 25 is tensioned, the rope 25 will naturally embed into the corresponding groove 37 on the arc surface of the support rod 36. The groove 37 plays a key positioning role for the rope 25, preventing it from leaving the predetermined position or interfering with each other after being subjected to force.

[0068] Since the sides of the cargo may not be perfectly vertical or flat, the rigid support may not fit completely. By setting a ball joint connection, the rectangular surface of the support rod 36 can deflect slightly when it comes into contact with the cargo, thereby allowing its rectangular surface to fit more fully with the cargo surface, increasing the contact area and ensuring the stability of the support.

[0069] Meanwhile, the groove 37 on the curved surface can also adjust its angle to ensure good contact and positioning with the rope 25 at all times. The elastic pad further increases friction and plays a buffering role to avoid damage to the cargo packaging. Finally, the support rod 36 and the tensioned rope 25 together form a constraint frame that fits tightly against the surface of the cargo, achieving excellent anti-fall effect.

[0070] In summary, the present invention, through the setting of the limiting component 3, whose support rod 36, in conjunction with the telescopic fork 14, can move synchronously during cargo retrieval, providing lateral support for the cargo in advance. Together with the binding component 2, it forms a dual protection mechanism of limiting and binding. The slot 37 on the support rod 36 effectively positions the rope 25, preventing its displacement and ensuring the stability of the binding network. This linkage design, deeply integrated with the operation process, not only provides reliable binding but also precise action and automatic reset, greatly improving the safety and operational efficiency of the entire stacker crane system.

[0071] Example 3

[0072] Reference Figures 11-12 The third embodiment of the present invention provides a method for preventing the stacker crane loading platform from falling, which is based on the stacker crane loading platform anti-fall device and includes the following steps:

[0073] Step 1: Activate the telescopic forks 14 to extend and pick up the goods, and drive the support rod 36 to move synchronously through the limiting component 3 linked with the forks, so that the support rod 36 abuts against the side of the goods to provide initial lateral support.

[0074] Step 2: The telescopic fork 14 returns to the mobile platform 13 with the load. The load pushes the ratchet 23 to rotate, loosening the rope 25 to allow the load to enter. After the load is in place, the pawl 24 locks under the meshing action of the ratchet. The tensioned rope 25 and the support rod 36 together form a constraint frame around the load.

[0075] The ropes 25 are arranged in a cross-net pattern to achieve flexible wrapping of goods in multiple directions. The slots 37 on the support rods 36 position the tensioned ropes 25 to prevent them from shifting and work together with the ropes 25 to form a constraint frame.

[0076] Step 3: During the movement of the stacker crane, the constraint frame is used to maintain the stability of the goods and prevent them from sliding, overturning or falling.

[0077] Step 4: After reaching the target cargo location, power is supplied to the magnetic control component 4 to drive the pawl 24 to separate from the drive ratchet 23, control the extension fork 14 to extend, and its linkage action causes the rope 25 to retract, the support rod 36 to gradually separate from the rope 25, release the constraint on the cargo, and complete the unloading.

[0078] This method integrates lateral pre-limiting, adaptive flexible restraint, stable transportation, and automatic restraint release into a coherent automated process, enabling active anti-fall protection for stacker cranes throughout the entire process of picking, transporting, and unloading goods.

[0079] First, by using the movement of the goods themselves as a power source, the binding and release actions are automatically triggered through mechanical linkage, realizing intelligent operation without human intervention throughout the entire process, and completely solving the problems of low efficiency and poor consistency of manual binding;

[0080] Secondly, through the synergistic effect of the pre-limiting of the support rod 36 and the cross-mesh binding of the rope 25, an adaptive constraint framework that is both rigid and flexible and closely fits the surface of the cargo is formed, which effectively eliminates the gaps present in traditional rigid limiting, significantly improves the reliability and stability of the constraint, and can effectively suppress the sliding and overturning of the cargo under complex working conditions.

[0081] Finally, each step of the method is closely aligned with the standard operating procedure of the stacker crane, ensuring precise movements and reliable linkage, which greatly improves safety while guaranteeing the efficient operation of the system.

[0082] In summary, this method fundamentally overcomes the shortcomings of existing fall prevention measures and significantly improves the safety, automation level, and overall efficiency of high-level warehousing operations.

[0083] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stacker crane loading platform anti-fall device, comprising a movable component (1), the movable component (1) comprising a fixed frame (11), a movable seat (12) for movement fixedly disposed at the bottom of the fixed frame (11), and a movable platform (13) for loading goods movably disposed in the fixed frame (11), characterized in that: The mobile platform (13) is fixedly provided with a telescopic fork (14) for carrying goods and a binding assembly (2) for securing the goods. The telescopic fork (14) is provided with limiting components (3) on both sides to prevent the goods from tipping over during transport and to prevent the binding assembly (2) from shifting.

2. The anti-fall device for a stacker crane loading platform according to claim 1, characterized in that: The strapping assembly (2) includes a rotating shaft (21) and a fixed shaft (22). The rotating shaft (21) is movably installed at two opposite corners on the entrance side of the mobile platform (13), and the fixed shaft (22) is fixedly installed at two opposite corners on the mobile platform (13) away from the entrance side. A drive ratchet (23) is fixedly installed on the rotating shaft (21). When the telescopic fork (14) carries goods, the two sides of the goods abut against the drive ratchet (23) and drive the drive ratchet (23) to rotate. A pawl (24) that meshes with the drive ratchet (23) is movably installed in the mobile platform (13). A magnetic control assembly (4) for separating the drive pawl (24) and the drive ratchet (23) is fixedly installed in the mobile platform (13).

3. The anti-fall device for a stacker crane loading platform according to claim 2, characterized in that: The rotating shaft (21) is wound with ropes (25) for restraining goods. The free ends of the ropes (25) are fixedly connected to fixed shafts (22) arranged diagonally. There are multiple ropes (25), which are arranged in a cross pattern inside the mobile platform (13) by diagonal connection to form a net-like restraint structure.

4. The anti-fall device for a stacker crane loading platform according to claim 2, characterized in that: The magnetic control assembly (4) includes an electromagnetic block (41) and a movable magnetic block (42). The electromagnetic block (41) is fixedly installed in the inner wall of the mobile platform (13). The pawl (24) is movably installed in the inner wall of the mobile platform (13) via a rotating shaft (43). The pawl (24) is located above the electromagnetic block (41), and the movable magnetic block (42) is fixedly installed at the tail of the pawl (24).

5. A stacker crane loading platform anti-fall device according to claim 4, characterized in that: The inner wall of the mobile platform (13) is provided with a guide chamber (44). The rotating shaft (43) is movably disposed in the guide chamber (44). An adjusting spring (45) is fixedly installed at the bottom of the guide chamber (44). The top end of the adjusting spring (45) is fixedly connected to the bottom of the rotating shaft (43). The adjusting spring (45) is used to provide an upward support force for the rotating shaft (43) under normal conditions.

6. The anti-fall device for a stacker crane loading platform according to claim 3, characterized in that: The limiting component (3) includes a rotating rod (31), which is located on both sides of the telescopic fork (14). The rotating rod (31) is fixedly connected to the drive shaft of the telescopic fork (14). A drive gear (32) is fixedly installed at one end of the rotating rod (31). A moving block (33) is movably installed on the moving platform (13). An adjustment groove (34) is provided on the moving block (33). A rack (35) that meshes with the drive gear (32) is fixedly installed at the bottom of the adjustment groove (34). A support rod (36) is movably installed at the top of the moving block (33).

7. A stacker crane loading platform anti-fall device according to claim 6, characterized in that: Multiple support rods (36) are provided, and the multiple support rods (36) are symmetrically arranged on the moving block (33). The support rods (36) are provided with rectangular surfaces and arc surfaces. The rectangular surfaces are used to abut against the side of the goods when the telescopic forks (14) are extended. Multiple slots (37) are provided on the arc surfaces.

8. A stacker crane loading platform anti-fall device according to claim 7, characterized in that: The rectangular surface of the support rod (36) is provided with an elastic pad. The support rod (36) is installed on the moving block (33) through a ball joint structure. The ball joint structure is used to adjust the angle of the rectangular surface.

9. A method for preventing a stacker crane loading platform from falling, implemented based on the stacker crane loading platform anti-fall device according to any one of claims 6-8, characterized in that, Includes the following steps: Step 1: Start the telescopic fork (14) to extend and pick up the goods, and drive the support rod (36) to move synchronously through the limit component (3) linked with the fork, so that the support rod (36) abuts against the side of the goods to provide initial lateral support; Step 2: The telescopic fork (14) returns the load to the mobile platform (13), the load pushes the drive ratchet (23) to rotate, loosens the rope (25) to allow the load to enter, and after the load is in place, the pawl (24) locks under the meshing action of the ratchet, and the tensioned rope (25) and the support rod (36) together form a constraint frame around the load. Step 3: During the movement of the stacker crane, the stability of the goods is maintained by the constraint frame. Step 4: After reaching the target cargo location, power is supplied to the magnetic control component (4) to drive the pawl (24) to separate from the drive ratchet (23), control the extension fork (14) to extend, and its linkage action causes the rope (25) to retract, the support rod (36) to gradually separate from the rope (25), release the constraint on the cargo, and complete the unloading.

10. A method for preventing a stacker crane loading platform from falling according to claim 9, characterized in that: In step two, the ropes (25) are arranged in a cross-net pattern to achieve flexible wrapping of goods in multiple directions. The slots (37) on the support rods (36) position the tensioned ropes (25) and work together with the ropes (25) to form the constraint frame.

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