Carrying platform and lifting system

Abstract

The application relates to a carrying platform and a lifting system. The carrying platform comprises a main frame, a table assembly and a table adjusting part. The main frame can reciprocate along a first direction. The table assembly is arranged on the main frame and is used for carrying goods to be carried. The table assembly comprises a first table fixedly arranged on the main frame and at least one second table arranged on the main frame at intervals along the first direction. The first table and the second table both have a table carrying surface for carrying goods. At least part of the second table is slidingly arranged on the main frame along the first direction. The table adjusting part is arranged on the main frame and is configured to drive the slidingly arranged second table to slide along the first direction and stop at a preset position. The carrying platform can be flexibly adapted to different height changes of goods shelves, can be connected to multiple storage layers at the same time and can transmit goods, so that the goods transmission efficiency of the lifting system is improved.

Description

Technical Field

[0001] This application relates to the field of warehousing and logistics equipment technology, and in particular to handling platforms and lifting systems. Background Technology

[0002] In the warehousing and logistics sector, goods are typically stored on shelves, and lifting systems facilitate the transfer of goods between the shelves and the ground. Shelves are designed with multi-level structures, and different shelf heights may be used between storage levels to accommodate goods of varying sizes.

[0003] The lifting system is equipped with a lifting mechanism and a transport platform. The lifting mechanism drives the transport platform to move up and down and dock with each storage layer, so that the goods can be pushed from the transport platform to the corresponding storage layer by a pushing device.

[0004] Traditional lifting systems can only connect to one storage layer at a time, resulting in relatively low transmission efficiency. Utility Model Content

[0005] Based on this, this application provides a handling platform and a lifting system. The handling platform can flexibly adapt to different shelf heights and simultaneously connect with multiple storage layers to transfer goods, thereby improving the goods transfer efficiency of the lifting system.

[0006] In a first aspect, this application provides a transport platform, comprising:

[0007] The main frame is capable of reciprocating along a first direction;

[0008] A platform assembly, disposed on the main frame, is used to carry goods to be transported; the platform assembly includes a first platform fixedly disposed on the main frame and at least one second platform spaced apart on the main frame along a first direction, both the first platform and the second platform having a platform bearing surface for carrying the goods; wherein at least a portion of the second platform is slidably disposed on the main frame along the first direction; and

[0009] A platform adjustment component is disposed on the main frame; the platform adjustment component is configured to drive the second platform, which is slidably disposed, to slide along the first direction and stop at a preset position.

[0010] In some other embodiments, the platform adjustment component is configured as a linear drive module, with the fixed end of the linear drive module connected to the main frame and the drive end of the linear drive module connected to the corresponding second platform to drive the corresponding second platform to move linearly along the first direction.

[0011] In some other embodiments, the main frame is provided with a guide rail extending along the first direction, and the second platform is slidably disposed along the guide rail;

[0012] The guide rails are spaced at least two apart in the horizontal direction, and the connection point between the linear drive module and the main frame is located at the middle position of all the guide rails.

[0013] In some other embodiments, a limiting member is provided on the side of the second platform to limit the sliding range of the second platform.

[0014] In some other embodiments, the first stage and / or the second stage includes:

[0015] The connecting part is connected to the main frame;

[0016] A support portion is disposed on the connecting portion; the support portion has a platform bearing surface extending along a second direction, and the platform bearing surface is movable along the second direction, the second direction being perpendicular to the first direction.

[0017] Secondly, this application also provides a lifting system, including the transport platform, column and anti-fall mechanism as described in any of the above embodiments;

[0018] The transport platform is slidably mounted on the column;

[0019] The fall protection mechanism is installed on the main frame. The fall protection mechanism includes a fall protection groove, and the column is installed in the fall protection groove. When the transport platform falls, the fall protection groove will lock the column.

[0020] In some other embodiments, the fall arrest mechanism includes:

[0021] A connecting block is provided on the main frame; the connecting block is provided with a through anti-fall groove along the first direction and a locking gap can be formed between the groove wall of the anti-fall groove and the column;

[0022] A transmission link assembly is hinged to the main frame; the first end of the transmission link assembly is movably disposed within the locking gap.

[0023] A braking assembly is elastically connected to the main frame along the first direction and hinged to the second end of the transmission link assembly; the braking assembly is capable of elastic movement relative to the main frame and drives the transmission link assembly to rotate relative to the main frame, so that the first end of the transmission link assembly is locked in the column.

[0024] In some other embodiments, the fall arrestor further includes:

[0025] A guide member is disposed within the locking gap, and the first end of the braking assembly is disposed between the guide member and the column; along the direction of the uncontrolled fall of the main frame, the distance between the guide member and the column gradually increases, and the first end can slide along the guide member in the direction where the distance gradually decreases.

[0026] In some other embodiments, the braking assembly includes:

[0027] A movable block is elastically connected to the main frame; the movable block is hinged to the second end of the transmission link assembly.

[0028] A braking elastic element, one end of which is connected to the main frame and the other end is movably connected to the second end of the transmission linkage assembly or the movable block; when the main frame falls out of control, the braking elastic element pulls the movable block or the second end of the transmission linkage assembly to move along the direction of the uncontrolled fall.

[0029] In some other embodiments, the braking assembly further includes:

[0030] The reset elastic element connects the main frame and the movable block;

[0031] A brake guide rod is disposed on the main frame, and the reset elastic element and the movable block are movably sleeved on the brake guide rod.

[0032] In some other embodiments, at least two reset elastic elements are spaced apart, the brake guide rods are arranged in a one-to-one correspondence with the reset elastic elements, and the movable block is mounted on at least two of the brake guide rods.

[0033] In some other embodiments, the lifting system further includes:

[0034] A lifting drive mechanism is used to drive the transport platform to reciprocate along the column in the first direction.

[0035] The aforementioned handling platform has its main frame fixedly connected to the drive end of the lifting drive mechanism, i.e., connected to the transmission belt, so that the handling platform can move up and down via the transmission belt. A platform assembly is mounted on the main frame, and goods are placed on the platform assembly for transport. By configuring the platform assembly as a first platform and a second platform spaced vertically, the handling platform can transport goods to different storage layers of the shelf. Furthermore, by setting a platform adjustment component to drive the second platform to slide up and down along the main frame and stop at a preset position, the distance between the second platform and the first platform can be adjusted. When the first platform is flush with the storage surface of a storage layer of the shelf, the height of each second platform can also be adjusted to be flush with the storage surface to be connected, thereby enabling the simultaneous transfer of multiple goods carried by the handling platform to the shelf, greatly improving the goods transport efficiency of the lifting system. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the lifting system provided in one embodiment of this application;

[0037] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0038] Figure 3 This is a schematic diagram of the structure of the transport platform provided in one embodiment of this application;

[0039] Figure 4 This is a rear view of a partial structure of a lifting system provided in one embodiment of this application;

[0040] Figure 5 for Figure 4 Enlarged structural diagram at point B in the middle.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. Handling platform; 1. Main frame; 11. Guide rail; 2. Platform assembly; 21. First platform; 211. Connecting part; 212. Bearing part; 2121. Platform bearing surface; 22. Second platform; 23. Limiting component; 3. Platform adjusting component;

[0043] 200. Column;

[0044] 300. Fall arrest mechanism; 310. Connecting block; 311. Fall arrest groove; 312. Locking gap; 320. Transmission link assembly; 321. First link; 322. Second link; 323. Third link; 330. Braking assembly; 331. Movable block; 332. Braking elastic element; 333. Reset elastic element; 334. Braking guide rod; 340. Guide element;

[0045] 400. Lifting drive mechanism; 410. Drive motor; 420. Transmission belt. Detailed Implementation

[0046] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] See Figure 1 and Figure 2 , Figure 1 A schematic diagram of the lifting system provided in one embodiment of this application is shown; Figure 2 for Figure 1 Enlarged structural view at point A. This application provides a handling platform 100 and a lifting system including the handling platform 100. The lifting system also includes a column 200, on which the handling platform 100 is slidably mounted. The handling platform 100 is used to carry goods and, by sliding up and down along the column 200, lifts the goods to a height level with different storage layers of the shelf.

[0048] Specifically, the columns 200 extend vertically and are spaced out horizontally to provide relatively stable support for the transport platform 100.

[0049] In some embodiments, the lifting system further includes a lifting drive mechanism 400 for driving the transport platform 100 to reciprocate along the column 200 in a first direction (i.e., the up-down direction shown in the figure).

[0050] Optionally, the lifting drive mechanism 400 includes a drive motor 410 and a transmission belt 420. The transmission belt 420 is meshed with the output shaft of the drive motor 410, so that the drive motor 410 drives the transmission belt 420 to rotate in a vertical plane. The transport platform 100 is fixedly connected to the transmission belt 420 to move up and down synchronously with the transmission belt 420. Of course, the lifting drive mechanism 400 can also adopt a cylinder, motor screw module, or other structural forms, which are not limited here.

[0051] This application embodiment mainly improves the handling platform 100. Please refer to... Figure 3 , Figure 3 A schematic diagram of the structure of a transport platform 100 provided in one embodiment of this application is shown.

[0052] Specifically, the handling platform 100 includes a main frame 1, a platform assembly 2, and a platform adjusting member 3. The main frame 1 is capable of reciprocating in the vertical direction. The platform assembly 2 is disposed on the main frame 1 and is used to carry goods to be handled. The platform assembly 2 includes a first platform 21 fixedly disposed on the main frame 1 and at least one second platform 22 spaced apart on the main frame 1 in the vertical direction. Both the first platform 21 and the second platform 22 have a platform bearing surface 2121 for carrying goods. At least a portion of the second platform 22 is slidably disposed on the main frame 1 in the vertical direction. The platform adjusting member 3 is disposed on the main frame 1 and is configured to drive the slidably disposed second platform 22 to slide in the vertical direction and stop at a preset position.

[0053] The conveying platform 100 provided in this embodiment has a main frame 1 fixedly connected to the drive end of the lifting drive mechanism 400, i.e., connected to the transmission belt 420, so that the conveying platform 100 can move up and down through the transmission belt 420. A platform assembly 2 is disposed on the main frame 1, and goods are placed on the platform assembly 2 for transportation. By configuring the platform assembly 2 to include a first platform 21 and a second platform 22 spaced vertically, the conveying platform 100 can transport goods to different storage layers of the shelf. Furthermore, by setting a platform adjustment component 3 to drive the second platform 22 to slide up and down along the main frame 1 and stop at a preset position, the distance between the second platform 22 and the first platform 21 can be adjusted. When the first platform 21 is flush with the storage bearing surface of a storage layer of the shelf, the height of each second platform 22 can also be adjusted to be flush with the storage bearing surface to be connected, thereby enabling the simultaneous transfer of multiple goods carried by the conveying platform 100 to the shelf, greatly improving the goods transport efficiency of the lifting system.

[0054] Optionally, the first platform 21 and the main frame 1 are configured as an integral structure, with the first platform 21 located at the bottom of the main frame 1 and arranged in an L-shape.

[0055] In some embodiments, the platform adjustment component 3 is constructed as a linear drive module. The fixed end of the linear drive module is connected to the main frame 1, and the driving end of the linear drive module is connected to the corresponding second platform 22 to drive the corresponding second platform 22 to move linearly in the up-down direction. The linear drive module can be a cylinder, an electric cylinder, or a motor screw module, etc. The specific structural form is not limited, as long as it can drive the second platform 22 to move up and down.

[0056] In some embodiments, the main frame 1 is provided with guide rails 11 extending vertically, and the second platform 22 is slidably disposed along the guide rails 11. At least two guide rails 11 are spaced apart horizontally, and the connection point between the linear drive module and the main frame 1 is located at the middle position of all guide rails 11. By providing guide rails 11, the vertical sliding of the second platform 22 is guided, thereby improving the movement stability of the second platform 22. Furthermore, by providing multiple guide rails 11 and setting the connection point between the linear drive module and the main frame 1 at the middle position of all guide rails 11, a more balanced force is provided on both sides of the linear drive module of each guide rail 11, thereby further improving the movement stability of the second platform 22.

[0057] In some embodiments, a limiting member 23 is provided on the side of the second platform 22. The limiting member 23 is used to limit the sliding range of the second platform 22 to prevent the second platform 22 from moving excessively toward the first platform 21 and affecting the first platform 21 in carrying goods, or to prevent the second platform 22 from moving excessively toward an adjacent second platform 22 and affecting the adjacent second platform 22 in carrying goods.

[0058] Specifically, a limiting member 23 is provided on the lower side of the second platform 22 adjacent to the first platform 21. When the limiting member 23 abuts against the first platform 21, the second platform 22 stops moving. When there are two or more second platforms 22, the second platform 22 other than the one adjacent to the first platform 21 is provided with a limiting member 23 on its lower side. The limiting member 23 stops moving when it abuts against the second platform 22 below it.

[0059] Please see Figure 2 and Figure 3 In some embodiments, the first platform 21 and / or the second platform 22 include a connecting portion 211 and a supporting portion 212, with the connecting portion 211 connected to the main frame 1. The supporting portion 212 is disposed on the connecting portion 211 and has a platform supporting surface 2121 extending along a second direction, which is movable along the second direction. The second direction is perpendicular to the vertical direction and can be either a left-right direction or a front-back direction; in this embodiment, it is a left-right direction. With the above configuration, the goods carried can be moved out and transferred to the shelf by driving the platform supporting surface 2121 to move, without the need for additional shuttle cars or robotic arms to unload goods from the handling platform 100.

[0060] It is understandable that the first platform 21 and / or the second platform 22 can also be configured as a stationary support platform, where goods can be transferred to the shelf using a shuttle or robotic arm. In practice, the specific configuration can be tailored to the application requirements.

[0061] Optionally, the support portion 212 is configured as a conveyor belt structure, and the conveyor belt is driven to move by a motor provided on the connecting portion 211. Specifically, the conveyor belt is sleeved on at least two rollers, and the output shaft of the motor is coaxially connected to each roller in a corresponding manner. By driving the rollers to rotate, the conveyor belt is driven to rotate, thereby forming a platform support surface 2121 that moves along the second direction.

[0062] Please refer to the following: Figure 2 , Figure 4 and Figure 5 , Figure 4 This is a rear view of a partial structure of a lifting system provided in one embodiment of this application; Figure 5 for Figure 4 Enlarged structural diagram at point B. The lifting system also includes a fall protection mechanism 300, which is mounted on the main frame 1. The fall protection mechanism 300 includes a fall protection groove 311, and a column 200 is mounted in the fall protection groove 311. When the transport platform 100 falls, the fall protection groove 311 will lock the column 200 to prevent the transport platform 100 from falling continuously.

[0063] Specifically, the fall arrest mechanism 300 includes a connecting block 310, a transmission linkage assembly 320, and a braking assembly 330. The connecting block 310 is disposed on the main frame 1, and has a through fall arrest groove 311 in the vertical direction, with a locking gap 312 formed between the groove wall and the column 200. The transmission linkage assembly 320 is hinged to the main frame 1, and its first end is movably disposed within the locking gap 312. The braking assembly 330 is elastically connected to the main frame 1 in the vertical direction and is hinged to the second end of the transmission linkage assembly 320; the braking assembly 330 can elastically move relative to the main frame 1 and drive the transmission linkage assembly 320 to rotate relative to the main frame 1, so that the first end of the transmission linkage assembly 320 is locked in place by the column 200.

[0064] When the fall arrestor 300 is installed, the braking assembly 330 is fixedly connected to the transmission belt 420. Since the main frame 1 is also fixedly connected to the transmission belt 420, the braking assembly 330 will maintain a fixed relative position with the main frame 1 when the transmission belt 420 is working normally. When the transmission belt 420 breaks, the braking assembly 330 will lose its support and thus undergo elastic action, producing vertical displacement relative to the main frame 1. This will drive the transmission linkage assembly 320 to rotate relative to the main frame 1, causing the first end of the transmission linkage assembly 320 to be stuck in the column 200, thereby preventing the main frame 1 from continuing to move downward along the column 200 and thus preventing the transport platform 100 from falling.

[0065] In some embodiments, the transmission linkage assembly 320 includes a first link 321, a second link 322, and a third link 323 that are hinged together in sequence. The first link 321 is hinged to the main frame 1 at its middle position. The end of the first link 321 away from the second link 322 is hinged to the braking assembly 330. The end of the third link 323 away from the second link 322 extends into the locking gap 312 to lock the column 200. When the transmission belt 420 breaks, the braking assembly 330 will be displaced downward relative to the main frame 1. The second link 322 will rotate accordingly, pulling the third link 323 upward, thereby moving the end of the third link 323 away from the second link 322 further into the locking gap 312, thus locking the column 200.

[0066] In some embodiments, the fall arrestor 300 further includes a guide 340 disposed within the locking gap 312. The first end of the braking assembly 330, i.e., the end of the third link 323 furthest from the second link 322, is disposed between the guide 340 and the column 200. Along the direction of uncontrolled fall of the main frame 1, the distance between the guide 340 and the column 200 gradually increases, and the first end of the braking assembly 330 can slide along the guide 340 in the direction where the distance gradually decreases. When the transport platform 100 is working normally, a gap is maintained between the first end of the braking assembly 330 and the column 200 so that the connecting block 310 can slide normally along the column 200; when the transport platform 100 falls, the first end of the braking assembly 330 will gradually slide along the guide 340 and lock the column 200.

[0067] In some embodiments, the braking assembly 330 includes a movable block 331 and a braking elastic member 332. The movable block 331 is elastically connected to the main frame 1 and is hinged to the second end of the transmission link assembly 320. One end of the braking elastic member 332 is connected to the main frame 1, and the other end is movably connected to the second end of the transmission link assembly 320 or the movable block 331. When the main frame 1 falls uncontrollably, the braking elastic member 332 pulls the movable block 331 or the second end of the transmission link assembly 320 to move in the direction of uncontrolled fall.

[0068] In this embodiment, the braking elastic element 332 is disposed on the lower side of the movable block 331. Under normal working conditions, the braking elastic element 332 is in a stretched state, so that it can apply a downward pulling force to the movable block 331 when the transmission belt 420 breaks and the movable block 331 loses its support. In other embodiments, the braking elastic element 332 can also be disposed on the upper side of the movable block 331. Under normal working conditions, the braking elastic element 332 is in a compressed state, so that it can spring the movable block 331 downward when the transmission belt 420 breaks and the movable block 331 loses its support, driving the movable block 331 to move downward relative to the main frame 1.

[0069] In some embodiments, the braking assembly 330 further includes a reset elastic element 333 and a brake guide rod 334. The reset elastic element 333 connects the main frame 1 and the movable block 331. The brake guide rod 334 is disposed on the main frame 1, and the reset elastic element 333 and the movable block 331 are movably sleeved on the brake guide rod 334. By providing the brake guide rod 334, the up-and-down movement of the movable block 331 is guided, so that the movable block 331 drives the transmission linkage assembly 320 more accurately. At the same time, the movable block 331 is indirectly connected to the main frame 1 through the brake guide rod 334, which is beneficial to the stability of the movable block 331 installed on the transmission belt 420. By providing the reset elastic element 333, the movable block 331 is provided with an elastic buffering effect.

[0070] Optionally, at least two reset elastic elements 333 are spaced apart, and brake guide rods 334 are arranged in a one-to-one correspondence with the reset elastic elements 333. The movable block 331 is mounted on at least two brake guide rods 334. By setting two cooperating brake guide rods 334 and reset elastic elements 333, the force balance of the movable block 331 is improved.

[0071] In this embodiment, two anti-fall mechanisms 300 are provided, which are respectively located on the left and right sides of the main frame 1 to improve the uniformity of force on the transport platform 100 when it is stuck and falling, thereby achieving a better anti-fall effect.

[0072] This application also provides a shelf-loading control method, which uses the above-mentioned lifting system to lift goods onto the shelf. The shelf-loading control method includes the following steps:

[0073] S100: Select a shelf with multiple storage layers along the vertical direction.

[0074] Specifically, the height of each storage shelf in the selected shelving unit can be the same or different.

[0075] S200: Measure the position of the storage bearing surface of each storage layer and obtain the spacing information of the storage bearing surface of each storage layer.

[0076] Specifically, the storage bearing surface is the surface on which the goods are placed. When the platform bearing surface 2121 of the platform assembly is flush with or slightly lower than the storage bearing surface, it is more convenient to push the goods from the platform bearing surface 2121 to the storage bearing surface.

[0077] S300: Based on the spacing information of the storage bearing surfaces of each storage layer, control the transport platform 100 to move in the vertical direction so that the bearing surface of the first platform 21 is flush with the storage bearing surface of the lower storage layer.

[0078] Specifically, the lifting drive mechanism 400 is activated, driving the transport platform 100 to move upward until the bearing surface of the first platform 21 is flush with the storage bearing surface of the lower storage layer.

[0079] S400: Adjust the second platform 22 so that the platform bearing surface 2121 of the second platform 22 is flush with the storage bearing surface of the upper storage layer.

[0080] Specifically, since the spacing information of the storage bearing surfaces of each storage layer has been obtained in step S200, the second platform 22 can be adjusted before loading goods to ensure that it is flush with the storage bearing surface of the goods to be stored after being lifted. Of course, the position adjustment can also be made after loading of goods has started and the transport platform 100 is already in a position where the bearing surface of the first platform 21 is flush with the storage bearing surface of the lower storage layer.

[0081] S500: Control the exchange of goods between the storage layer and the first platform 21 and / or the second platform 22.

[0082] Specifically, goods on the first platform 21 and / or the second platform 22 can be moved to the corresponding storage layer, or goods can be moved from the storage layer to the first platform 21 and / or the second platform 22, making the application quite flexible.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A transport platform, characterized in that, include: The main frame (1) is capable of reciprocating along a first direction; A platform assembly (2), disposed on the main frame (1), is used to carry goods to be transported; the platform assembly (2) includes a first platform (21) fixedly disposed on the main frame (1) and at least one second platform (22) spaced apart on the main frame (1) along a first direction, the first platform (21) and the second platform (22) both having a platform bearing surface (2121) for carrying the goods; wherein at least a portion of the second platform (22) is slidably disposed on the main frame (1) along the first direction; and A platform adjustment component (3) is disposed on the main frame (1); the platform adjustment component (3) is configured to drive the second platform (22) which is slidably disposed to slide along the first direction and stop at a preset position.

2. The handling platform according to claim 1, characterized in that, The platform adjustment component (3) is constructed as a linear drive module. The fixed end of the linear drive module is connected to the main frame (1), and the driving end of the linear drive module is connected to the corresponding second platform (22) to drive the corresponding second platform (22) to move linearly along the first direction.

3. The handling platform according to claim 2, characterized in that, The main frame (1) is provided with a guide rail (11) extending along the first direction, and the second platform (22) is slidably disposed along the guide rail (11); The guide rails (11) are spaced at least two apart in the horizontal direction, and the connection point between the linear drive module and the main frame (1) is located in the middle of all the guide rails (11).

4. The handling platform according to claim 1, characterized in that, The second platform (22) is provided with a limiting member (23) on its side, which is used to limit the sliding range of the second platform (22).

5. The handling platform according to claim 1, characterized in that, The first stage (21) and / or the second stage (22) include: The connecting part (211) is connected to the main frame (1); A support portion (212) is disposed on the connecting portion (211); the support portion (212) has a platform support surface (2121) extending along a second direction, and the platform support surface (2121) is movable along the second direction, which is perpendicular to the first direction.

6. A lifting system, characterized in that, Includes the handling platform (100), column (200), and fall protection mechanism (300) as described in any one of claims 1 to 5; The transport platform (100) is slidably mounted on the column (200); The fall protection mechanism (300) is installed on the main frame (1). The fall protection mechanism (300) includes a fall protection groove (311). The column (200) is installed in the fall protection groove (311). When the transport platform (100) falls, the fall protection groove (311) jams the column (200).

7. The lifting system according to claim 6, characterized in that, The fall protection mechanism (300) includes: A connecting block (310) is provided on the main frame (1); the connecting block (310) is provided with a through anti-fall groove (311) along the first direction and a locking gap (312) can be formed between the groove wall of the anti-fall groove (311) and the column (200). A transmission link assembly (320) is hinged to the main frame (1); the first end of the transmission link assembly (320) is movably disposed within the locking gap (312); The braking assembly (330) is elastically connected to the main frame (1) along the first direction and hinged to the second end of the transmission link assembly (320); the braking assembly (330) is elastically movable relative to the main frame (1) and drives the transmission link assembly (320) to rotate relative to the main frame (1) so that the first end of the transmission link assembly (320) is stuck in the column (200).

8. The lifting system according to claim 7, characterized in that, The fall protection mechanism (300) also includes: A guide (340) is disposed within the locking gap (312), and the first end of the braking assembly (330) is disposed between the guide (340) and the column (200); along the direction of the uncontrolled fall of the main frame (1), the distance between the guide (340) and the column (200) gradually increases, and the first end can slide along the guide (340) in the direction of the gradually decreasing distance.

9. The lifting system according to claim 7, characterized in that, The braking assembly (330) includes: The movable block (331) is elastically connected to the main frame (1); the movable block (331) is hinged to the second end of the transmission link assembly (320); Braking elastic element (332), one end of which is connected to the main frame (1), and the other end is movably connected to the second end of the transmission linkage assembly (320) or the movable block (331); when the main frame (1) falls out of control, the braking elastic element (332) pulls the movable block (331) or the second end of the transmission linkage assembly (320) to move along the direction of the uncontrolled fall.

10. The lifting system according to claim 9, characterized in that, The braking assembly (330) also includes: The reset elastic element (333) connects the main frame (1) and the movable block (331). A brake guide rod (334) is disposed on the main frame (1), and the reset elastic element (333) and the movable block (331) are movably sleeved on the brake guide rod (334).

11. The lifting system according to claim 10, characterized in that, At least two reset elastic elements (333) are spaced apart, and the brake guide rods (334) are arranged in a one-to-one correspondence with the reset elastic elements (333). The movable block (331) is installed on at least two of the brake guide rods (334).

12. The lifting system according to claim 6, characterized in that, The lifting system also includes: The lifting drive mechanism (400) is used to drive the transport platform (100) to reciprocate along the column (200) in the first direction.

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