Lifting device and temporary storage station

Abstract

The utility model relates to a lifting device and a temporary storage station, and the lifting device comprises a rack which is enclosed to form a lifting space extending along the vertical direction; the lifting output mechanism comprises a lifting platform movably arranged on the rack, at least two groups of first rollers and second rollers which are rotationally connected to the lifting platform respectively, a transmission assembly arranged on the lifting platform, and a lifting driving assembly used for driving the lifting platform to move in a lifting space in the vertical direction; the two sets of first rollers are connected to the two sides of the rack in a rolling mode in the first horizontal direction, and the two sets of second rollers are connected to the two sides of the rack in a rolling mode in the second horizontal direction. Through the arrangement, the displacement trend of the lifting platform in the horizontal direction is limited, so that the moving precision of the lifting platform in the vertical direction is improved, and a product is prevented from being damaged by shaking or the quality is prevented from being reduced.

Description

Technical Field

[0001] This utility model relates to the field of solar cell manufacturing technology, and in particular to a lifting device and a buffer station. Background Technology

[0002] Solar cell buffering technology is a crucial step in the solar cell production process, encompassing cell storage, protection, and improved production efficiency. As solar energy technology continues to advance, buffering technology is also constantly evolving to meet the demands of efficient and environmentally friendly production. Especially for three-dimensional buffering equipment, solar cells are typically stored in baskets for easy transfer. A lift system drives the baskets vertically and horizontally to move them to or from the three-dimensional buffering location.

[0003] To improve the stability of the lifting process and reduce damage to components such as batteries caused by the swaying of the basket, existing lifting platforms typically use high-precision linear guides for limit guidance, which greatly increases equipment costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, in a first aspect, this utility model provides a lifting device, comprising:

[0005] The frame encloses and forms a lifting space that extends vertically.

[0006] The lifting mechanism includes: a lifting platform at least partially located within the lifting space; at least two sets of first rollers and second rollers respectively rotatably connected to the lifting platform; a transmission component disposed on the lifting platform; and a lifting drive component for driving the lifting platform to lift. The lifting platform is configured to be rotatably connected to the frame via at least two sets of first rollers and second rollers, and is limited in a first horizontal direction by the first rollers and in a second horizontal direction by the second rollers.

[0007] In one embodiment of the present invention, the frame includes multiple sets of column assemblies arranged along a first horizontal direction. Each set of column assemblies includes two first sub-columns and two second sub-columns arranged along a second horizontal direction. A feeding channel extending along the first horizontal direction is formed between the multiple sets of first sub-columns and second sub-columns.

[0008] In one embodiment of the present invention, the lifting platform includes a lifting frame, and side plates are fixedly connected to both sides of the lifting frame along the second horizontal direction; the transmission component is installed on the lifting frame, and the lifting drive component is connected to the side plates.

[0009] In one embodiment of the present invention, two sets of first rollers are respectively rolled along a first horizontal direction and connected to the outer or inner sidewall of an adjacent first sub-column or second sub-column in two sets of column assemblies, and two sets of second rollers are respectively rolled along a second horizontal direction and connected to the inner sidewall between each set of first sub-columns and second sub-columns.

[0010] In one embodiment of the present invention, the first sub-post and the second sub-post are respectively provided with a first moving surface adapted to the first roller and a second moving surface adapted to the second roller.

[0011] In one embodiment of this utility model, the lifting drive assembly includes a rotary drive component mounted on the frame, a drive shaft disposed at one end of the frame and connected to the output end of the rotary drive component, drive wheels respectively fixedly sleeved on both ends of the drive shaft, driven wheels rotatably connected to the other end of the frame in the vertical direction and corresponding to the drive wheels, and a synchronous belt respectively connected between each set of drive wheels and driven wheels; the lifting platform and one side of the synchronous belt are fixedly connected.

[0012] In one embodiment of this utility model, the synchronous belt has a first fixed end and a second fixed end formed on the same side, and the lifting platform is provided with a locking assembly fixedly connected to the first fixed end and the second fixed end; the locking assembly includes a locking side plate fixedly connected to the middle part of the outer side of the side plate, a first support plate and a second support plate horizontally fixedly connected to the locking side plate, a first clamping base plate vertically fixed to the top surface of the first support plate, a second clamping base plate vertically fixed to the bottom surface of the second support plate, a first movable clamping plate detachably connected to the first clamping base plate, and a second movable clamping plate detachably connected to the second clamping base plate; the first clamping base plate and the first movable clamping plate are used to clamp the second fixed end of the synchronous belt; the second clamping base plate and the second movable clamping plate are used to clamp the first fixed end of the synchronous belt.

[0013] In one embodiment of the present invention, the timing belt is disposed between adjacent column assemblies, and a tensioning assembly for adjusting the tension of the timing belt is disposed between adjacent column assemblies; the tensioning assembly includes a connecting arm connected between two column assemblies, the connecting arm having an oblong hole, the oblong hole having an adjustable rod, and the adjusting rod being connected to a tensioning wheel that can abut against one side of the timing belt.

[0014] In one embodiment of this utility model, the lifting mechanism further includes a stop mechanism, which includes: a linear drive member disposed on the lifting platform, a push rod connected to the output end of the linear drive member, a stop post disposed vertically on the frame, and a plurality of stop holes disposed vertically at intervals on the stop post and adapted to the push rod; the linear drive member can drive the push rod to move into the stop hole.

[0015] Secondly, this utility model provides a cache station, comprising:

[0016] The main body of the buffer station is equipped with multiple transmission mechanisms along the vertical direction;

[0017] The lifting device as described in the first aspect is disposed within the buffer station body.

[0018] The lifting device described in this utility model has the following advantages compared to the prior art:

[0019] 1. The lifting platform is guided in a first horizontal direction by a first roller from the outside or inside of the frame, and guided in a second horizontal direction by a second roller from the inside of the frame. This restricts the horizontal displacement of the lifting platform, thereby improving the vertical movement accuracy and preventing product swaying, damage, or quality degradation. High-precision linear guides are not required for this purpose, significantly reducing equipment costs.

[0020] 2. The first roller can also limit the second roller in the first horizontal direction to prevent the second roller from derailing, and the second roller can also limit the first roller in the second horizontal direction to prevent the first roller from derailing, thus realizing the mutual locking of the first roller and the second roller.

[0021] 3. The frame provides the main support for the lifting device and forms a lifting space within the frame for the lifting platform to rise or fall. The lifting drive components and transmission mechanism work together to drive the product to rise, fall, input, and output. Attached Figure Description

[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Figure 1 This is a structural diagram of the lifting device;

[0024] Figure 2 This is a side view of the lifting device;

[0025] Figure 3 This is a structural diagram of the lifting mechanism (excluding the lifting drive component);

[0026] Figure 4 This is a structural schematic diagram of the lifting drive assembly;

[0027] Figure 5 This is a structural diagram of the locking component;

[0028] Figure 6 yes Figure 1Enlarged view of point A in the middle;

[0029] Figure 7 This is a schematic diagram of the stop mechanism;

[0030] Figure 8 This is a partial structural diagram of the stop mechanism;

[0031] Figure 9 This is a structural diagram of the cache station;

[0032] Figure 10 This is a cross-sectional view of the cache site.

[0033] Explanation of reference numerals in the accompanying drawings: 1. Frame; 11. Column assembly; 111. First sub-column; 112. Second sub-column; 12. Lifting space; 13. Connecting rod;

[0034] 2. Lifting drive assembly; 21. Rotary drive component; 22. Drive shaft; 23. Bearing housing; 24. Drive pulley; 25. Synchronous belt; 251. First fixed end; 252. Second fixed end; 26. Driven pulley;

[0035] 3. Transmission assembly; 4. Lifting platform; 41. Lifting frame; 42. Side plate; 43. First roller; 44. Locking assembly; 440. Locking side plate; 441. First support plate; 442. Second support plate; 443. First clamping base plate; 444. Second clamping base plate; 445. First movable clamping plate; 446. Second movable clamping plate; 45. Second roller;

[0036] 5. Flower basket; 6. Stopping mechanism; 60. First stop bracket; 61. Linear drive component; 62. Push rod; 63. Bushing; 64. Second stop bracket; 65. Stop post; 66. Stop hole;

[0037] 7. Tensioning assembly; 71. Connecting arm; 72. Waist-shaped hole; 73. Adjusting rod; 74. Tensioning wheel; 8. Buffer station body. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0039] For ease of understanding, this embodiment uses Figure 1 Based on this, the direction of the X-axis is defined as the first horizontal direction, the direction of the Y-axis is defined as the second horizontal direction, and the direction of the Z-axis is defined as the vertical direction.

[0040] Reference Figure 9 and Figure 10As shown, this embodiment provides a buffer station, which includes a buffer station body 8 and a lifting device. The buffer station body 8 has multiple layers of transmission mechanisms arranged vertically. These transmission mechanisms are arranged in parallel at intervals, allowing multiple layers of products to be placed within the buffer station body 8. In this embodiment, the product is a flower basket 5. The lifting device is located within the buffer station body 8 and is used to lift or lower the product vertically, allowing the product to connect with transmission mechanisms of different layers. Specifically, the lifting device can be located at the front or rear end of the buffer station body 8. In practical applications, both the front and rear ends of the buffer station body 8 can be equipped with lifting devices to maximize the circulation of products. In this embodiment, the lifting device includes a frame 1 and a lifting output mechanism.

[0041] Combination Figure 1 and Figure 2 In this embodiment, the frame 1 is a frame structure, enclosing a vertically extending lifting space 12. Specifically, the frame 1 includes multiple sets of column assemblies 11 arranged along a first horizontal direction. In this embodiment, there are two sets of column assemblies 11, connected by connecting rods 13. Each set of column assemblies 11 includes two first sub-columns 111 and second sub-columns 112 arranged along a second horizontal direction. The first sub-columns 111 and second sub-columns 112 are vertically arranged, and a feeding channel extending along the first horizontal direction is formed between the multiple sets of first sub-columns 111 and second sub-columns 112, allowing products to move from one side of the upgrading device to the other side along the first horizontal direction through the feeding channel. In this embodiment, one side of the lifting device interfaces with external conveying devices, robots, etc., for inputting products, while the other side of the lifting device interfaces with the transmission mechanism inside the buffer station body 8, enabling products to move from a fixed height outside to different heights within the buffer station via the transmission mechanism.

[0042] Combination Figure 3 The lifting output mechanism includes a lifting platform 4, a first roller 43 and a second roller 45, a transmission component 3, and a lifting drive component 2. The lifting platform 4 is movably mounted on the frame 1. At least a portion of the lifting platform 4 is located within the lifting space 12. The lifting space 12 can be understood as the space between two sets of first sub-columns 111 and second sub-columns 112. To better interface with external equipment, the lifting platform 4 extends beyond the lifting space 12 at both ends along a first direction. Specifically, the lifting platform 4 includes a lifting frame 41, with side plates 42 fixedly connected to both sides of the lifting frame 41 along a second horizontal direction. The side plates 42 can block and protect the products on the lifting platform 4 along the second horizontal direction, especially when the products are tall, such as a flower basket 5, which requires stacking multiple layers of battery cells vertically to increase capacity; the side plates 42 can prevent the flower basket 5 from tipping over.

[0043] In this embodiment, there are at least two sets of first rollers 43 and second rollers 45, each rotatably connected to the lifting platform 4. The lifting platform 4 is rotatably connected to the frame 1 by these at least two sets of first rollers 43 and second rollers 45. Furthermore, the lifting platform 4 is limited in a first horizontal direction by the first rollers 43 and in a second horizontal direction by the second rollers 45, ensuring that the lifting platform 4 can move smoothly up and down in the vertical direction without horizontal deviation or swaying. Both the first rollers 43 and second rollers 45 include an axle, a bearing, and a wheel body. The axle, bearing, and wheel body share a common axis. The axle is fixedly mounted on a side plate 42 on the lifting platform 4. The inner ring of the bearing is fixedly sleeved on the axle, and the wheel body is fixedly sleeved on the outer ring of the bearing. The wheel body is rotatably connected to the axle and the side plate 42 via the bearing. The axis of the first roller 43 extends along the second horizontal direction, and the axis of the second roller 45 extends along the first horizontal direction.

[0044] In this embodiment, the lifting platform 4 is provided with two sets of first rollers 43 on both sides along the second horizontal direction. Taking the two sets of first rollers 43 on one side of the lifting platform 4 along the second horizontal direction as an example, these two sets of first rollers 43 are mirror images of each other along the first horizontal direction. Furthermore, these two sets of first rollers 43 are respectively rolled along the first horizontal direction to the outer or inner sidewall of adjacent first sub-columns 111 or second sub-columns 112 in the two sets of column assemblies 11. In addition, each set of first rollers 43 includes at least two first rollers 43 arranged vertically.

[0045] Similarly, the lifting platform 4 is provided with two sets of second rollers 45 at both ends along the first horizontal direction. Taking the two sets of second rollers 45 at one end of the lifting platform 4 along the first horizontal direction as an example, these two sets of second rollers 45 are mirror images of each other along the second horizontal direction. Furthermore, these two sets of second rollers 45 are respectively rotatably connected along the second horizontal direction to the inner sidewalls of adjacent first sub-columns 111 and second sub-columns 112 in the two sets of column assemblies 11. In addition, each set of second rollers 45 includes at least two second rollers 45 arranged vertically.

[0046] To ensure smooth operation of the first roller 43 and the second roller 45 on the first sub-post 111 and / or the second sub-post 112, the first sub-post 111 and the second sub-post 112 are respectively provided with a first moving surface adapted to the first roller 43 and a second moving surface adapted to the second roller 45. The first moving surface is located on the outer or inner side of the first sub-post 111 and the second sub-post 112 along a first horizontal direction. The second moving surface is located on the inner side of the first sub-post 111 and the second sub-post 112 along a second horizontal direction. If the wheel surfaces of the first roller 43 and the second roller 45 are provided with annular patterns, then the first moving surface and the second moving surface are corresponding planar structures. In some embodiments, the first roller 43 and the second roller 45 are respectively provided with grooves or protrusions around their periphery, and the first moving surface and the second moving surface are respectively provided with protrusions or grooves adapted to the first roller 43 and the second roller 45 along the vertical direction, so that the first roller 43 and the second roller 45 can further limit the lifting platform 4 in the second horizontal direction and the first horizontal direction respectively through the corresponding protrusion and groove structure, in addition to limiting and guiding the lifting platform 4 in the first horizontal direction and the second horizontal direction respectively through the main structure.

[0047] Combination Figure 1 In this embodiment, the transmission component 3 is disposed on the lifting platform 4. The number of transmission components 3 is one or more sets, such as two sets, three sets, etc., to increase the carrying capacity of the lifting platform 4. Multiple sets of transmission components 3 are arranged side-by-side along the second horizontal direction on the lifting frame 41 of the lifting platform 4. Furthermore, the transmission direction of each transmission component 3 is along the first horizontal direction. The size specifications of the transmission components 3 correspond to the multi-layer transmission mechanism within the buffer station. Therefore, when the transmission component 3 reaches the corresponding layer of the transmission mechanism, the product can be directly transferred from the transmission component 3 to the conveying mechanism. In this embodiment, both the transmission component 3 and the transmission mechanism can adopt a belt conveyor structure. Of course, other types of conveying structures can also be used, such as a drum conveyor structure or a chain conveyor mechanism.

[0048] Combination Figure 4In this embodiment, the lifting drive assembly 2 is connected to the side plate 42, and the side plate 42 drives the lifting platform 4 to move vertically. Specifically, the lifting drive assembly 2 includes a rotary drive component 21, which includes, but is not limited to, a drive motor. The rotary drive component 21 is mounted on the frame 1. The output end of the drive motor may also be equipped with a coupling or a gearbox to change the output torque of the drive motor to adapt to products of different weights. The output end of the rotary drive component 21 is connected to a drive shaft 22 located at one end of the frame 1, which is driven to rotate by the rotary drive component 21. The drive shaft 22 is arranged along a second horizontal direction and has bearing seats 23 at both ends. The two ends of the drive shaft 22 are respectively fixedly fitted with drive wheels 24, which drive the two drive wheels 24 to rotate synchronously. The frame 1 is rotatably connected to a driven wheel 26 corresponding to the drive wheel 24 at the other end of the frame 1 along the vertical direction. This forms two sets of drive wheels 24 and driven wheels 26. The drive wheels 24 and driven wheels 26 are preferably synchronous wheels. In this embodiment, to ensure structural strength, the rotary drive component 21, drive shaft 22, and drive wheel 24 are positioned at the bottom of the lifting device or the bottom frame of the buffer station body 8. This also lowers the center of gravity of the elevator, improving stability. A synchronous belt 25 connects each set of drive wheels 24 and driven wheels 26. The two sets of drive wheels 24 and the two sets of synchronous belts 25 drive the two sets of driven wheels 26 to rotate synchronously. Since the drive shaft 22 and side plate 42 are both arranged along the second horizontal direction, the two sets of synchronous belts 25 are positioned close to and connected to the corresponding side plate 42, avoiding obstruction of the feeding channel along the first horizontal direction. Furthermore, the synchronous belt 25 is positioned between adjacent column assemblies 11 along the first horizontal direction.

[0049] Combination Figure 5 The lifting platform 4 and the synchronous belt 25 are fixedly connected on one side. In this embodiment, the side plate 42 of the lifting platform 4 and the synchronous belt 25 are detachably fixedly connected. Figure 6The synchronous belt 25 has two fixed ends on the same side, specifically a first fixed end 251 and a second fixed end 252. That is, the two synchronous belts 25 are disconnected on the outer sides of the two side plates 42 to form two fixed ends. The first fixed end 251 and the second fixed end 252 are close together to reduce the gap between the two fixed ends, thereby allowing the synchronous belt 25 to have a larger vertical travel length without being interfered with by the driving pulley 24 or the driven pulley 26, thus increasing the lifting height of the lifting platform 4. A locking assembly 44 is provided on each side of the side plate 42 along the second horizontal direction. The locking assembly 44 is fixedly connected to the first fixed end 251 and the second fixed end 252 of the synchronous belt 25. In this embodiment, the locking assembly 44 includes a locking side plate 440 fixedly connected to the middle portion of the outer side surface of the side plate 42, a first support plate 441 and a second support plate 442 horizontally fixedly connected to the locking side plate 440, a first clamping base plate 443 vertically fixed to the top surface of the first support plate 441, a second clamping base plate 444 vertically fixed to the bottom surface of the second support plate 442, a first movable clamping plate 445 detachably connected to the first clamping base plate, and a second movable clamping plate 446 detachably connected to the second clamping base plate 444. The first clamping base plate 443 and the first movable clamping plate 445 are used to clamp the second fixed end 252 (upper end) of the timing belt. The second clamping base plate 444 and the second movable clamping plate 446 are used to clamp the first fixed end 251 (lower end) of the timing belt. Furthermore, matching protrusions and grooves are alternately provided between the opposing surfaces of the first clamping base plate 443 and the first movable clamping plate 445. Matching protrusions and grooves are also alternately provided between the opposing surfaces of the second clamping base plate 444 and the second movable clamping plate 446. These protrusions and grooves can also be understood as anti-slip surfaces. The shapes of the anti-slip surfaces include, but are not limited to, diagonal stripes, horizontal stripes, alternating horizontal and vertical stripes, and dotted stripes. In a further embodiment, the first clamping base plate 443 and the first support plate 441 are detachably fixedly connected. The second clamping base plate 444 and the second support plate 442 are also detachably fixedly connected. Thus, the first support plate 441 and the second support plate 442 are staggered.

[0050] Combination Figure 6 A tensioning assembly 7 for adjusting the tension of the timing belt 25 is provided between adjacent column assemblies 11. The tensioning assembly 7 includes connecting arms 71 connected between the two column assemblies 11. The connecting arms 71 are arranged along a first horizontal direction and also serve to increase the structural rigidity of the frame 1. Two connecting arms 71 are provided. The two ends of these two connecting arms 71 are respectively fixedly connected to two adjacent first sub-columns 111 and two adjacent second sub-columns 112. Figure 2The connecting arm 71 has an oblong hole 72. An adjusting rod 73 is adjustable within the oblong hole 72. The adjusting rod 73 is rotatably connected to a tensioning pulley 74 that abuts against one side of the synchronous belt 25. By controlling the position of the adjusting rod 73 within the oblong hole 72, the pressure exerted by the tensioning pulley 74 on the synchronous belt 25 is changed, thereby adjusting the tension of the synchronous belt 25. In this embodiment, the adjusting rod 73 and the tensioning pulley 74 can be used together as a tensioning pulley 74 bearing follower with a shaft.

[0051] Combination Figure 7 and Figure 8 The lifting mechanism also includes a stop mechanism 6. The stop mechanism 6 includes: a linear drive 61 mounted on the lifting platform 4; a push rod 62 connected to the output end of the linear drive 61; a stop post 65 vertically mounted on the frame 1; and multiple stop holes 66 vertically spaced on the frame 1 and adapted to the push rod 62. The linear drive 61 can drive the push rod 62 to move into the stop hole 66. The piston rod of the cylinder drives the push rod 62 into the stop hole 66, thereby stopping and limiting the lifting platform 4. Specifically, the linear drive 61 is mounted on the lifting frame 41 via a first stop bracket 60. The linear drive 61 includes, but is not limited to, a hydraulic cylinder, an electric push rod 62, or a pneumatic cylinder. In this embodiment, the linear drive component 61 is a cylinder, and the piston rod is connected to the cylinder barrel in a generally horizontal direction. Since the cylinder operates when the lifting platform 4 falls, to prevent the piston rod of the cylinder from being damaged by excessive downward radial force, the lifting frame 41 is also provided with a second stop bracket 64. The stop bracket is provided with a bushing 63, and the push rod 62 is movably inserted through the bushing 63 and extends outward to the stop hole 66. The first stop bracket 60 can be fixed to the second stop bracket 64 or both can be integrated. When the belt breaks, the push rod 62 extends, causing the lifting platform 4 to fall until the push rod 62 enters the stop hole 66, stopping the lifting platform 4 and preventing it from falling to the ground and damaging the product. To further reduce the falling distance of the lifting platform 4, multiple stop holes 66 are provided, so that the maximum falling distance of the lifting platform 4 does not exceed the spacing between the corresponding stop holes 66. Accordingly, the lifting drive assembly 2 can be equipped with a torque sensor or a tension sensor (not shown in the figure), or an acceleration sensor (not shown in the figure) can be installed on the lifting platform 4 to detect abnormal output tension or torque and abnormal acceleration of the lifting platform 4 caused by belt breakage in a timely manner.

[0052] Specifically, for the lifting device provided in this embodiment, two sets of first rollers 43 are respectively rolled along the first horizontal direction and connected to the outer walls of adjacent first sub-columns 111 and second sub-columns 112 in the two sets of column assemblies 11, so that the lifting platform 4 is limited by the two sets of first rollers 43 along the first horizontal direction. The transmission assembly 3 is defined to transport products along the first horizontal direction, i.e., the front-to-back direction. Specifically, one set of the two sets of first rollers 43, located at the front of the two sets of columns, abuts against the front side of the first sub-column 111 and the second sub-column 112, limiting the rearward displacement of the lifting platform 4. The other set of the two sets of first rollers 43, located at the rear of the two sets of columns, abuts against the rear side of the first sub-column 111 and the second sub-column 112, limiting the forward displacement of the lifting platform 4. This achieves the goal of the two sets of first rollers 43 abutting against the outer sides of the two first sub-columns 111 and the two second sub-columns 112, respectively, thus limiting the lifting platform 4 along the second horizontal direction. Each group of first rollers 43 consists of four rollers, which are respectively arranged around the outside of the two groups of side plates 42.

[0053] To improve the space utilization of the lifting device, a through hole adapted to the second roller 45 is opened on the side plate 42, so that the second roller 45 is installed on the inner side of the side plate 42, and its wheel body extends through the through hole to protrude from the outer side of the side plate 42, thus abutting against the inner side of the first sub-column 111 and the second sub-column 112. The diameter of the second roller 45 along the second horizontal direction overlaps with the thickness of the side plate 42 along the second horizontal direction in a first overlapping area, thereby saving the width of this first overlapping area in the second horizontal direction. That is, without changing the size of the lifting platform 4, the width of the feeding channel along the second horizontal direction is increased. Furthermore, when the columns of the lifting device are covered with a skin shell as a frame, installing the second roller 45 on the inner side of the side plate 42 makes it easier to remove, replace, or adjust the second roller 45 from the internal space of the lifting device. The first roller 43 is installed on the side plate 42, and its width along the second horizontal direction also overlaps with the width of the column assembly 11 in a second overlapping area, reducing the space occupied by the first roller 43. Furthermore, when the first roller 43 is installed on the outside of the column assembly 11, it is easier to disassemble, replace, or adjust the first roller 43 from the front and rear sides of the lifting device.

[0054] Two sets of second rollers 45 are respectively rolled along the second horizontal direction and connected to the inner wall between the first sub-columns 111 and the second sub-columns 112 of each set. The Y-axis direction is defined as the left-right direction; the first sub-columns 111 of both sets of column assemblies 11 are located on the left, and the second sub-columns 112 are located on the right. Specifically, one set of the two sets of second rollers 45 is rolled along the right side of the first sub-columns 111 of both sets of column assemblies 11, limiting the leftward displacement of the lifting platform 4. The other set of the two sets of second rollers 45 is rolled along the left side of the second sub-columns 112 of both sets of column assemblies 11, limiting the rightward displacement of the lifting platform 4. This achieves the effect that the two sets of second rollers 45 abut against the inner side of each first sub-column 111 and second sub-column 112, thereby limiting the lifting platform 4 along the second horizontal direction. Furthermore, the two sets of first rollers 43 and second rollers 45 can mutually limit each other to prevent derailment caused by detaching from the column. Specifically, while the first roller 43 limits the lifting platform 4 along the first horizontal direction, the position of the second roller 45 mounted on the lifting platform 4 along the first horizontal direction is also determined, thereby preventing the second roller 45 from slipping along the first horizontal direction. Similarly, while the second roller 45 limits the lifting platform 4 along the second horizontal direction, the position of the first roller 43 mounted on the lifting platform 4 along the second horizontal direction is also determined, thereby preventing the first roller 43 from slipping along the second horizontal direction. Through the coordinated guidance of the first rollers 43 and second rollers 45, the operating accuracy of the lifting platform 4 can be guaranteed. Moreover, the first rollers 43 and second rollers 45 have a simple structure, are easy to assemble, and have low manufacturing costs, which can save a lot of manufacturing costs, especially compared to linear guides. There are four second rollers 45 in each group, and they are respectively set around the inner sides of the two groups of side plates 42. The spacing between the second rollers 45 in each group is smaller than that between the first rollers 43 in each group to avoid interference, and they are adapted to the assembly dimensions on the inner and outer sides of the column.

[0055] Compared with the prior art, the lifting device and buffer station provided in this embodiment can be used to place and transport products through a multi-layer transmission mechanism within the buffer station. The frame 1 provides the main support for the lifting device, and a lifting space 12 is formed within the frame 1 for raising or lowering the lifting platform 4. The lifting drive component 2 moves the lifting platform 4 to different heights, aligning it vertically with the corresponding layer of the transmission mechanism for docking. The transmission component 3 then allows products to be transferred from the lifting platform 4 to the corresponding transmission mechanism. A first roller 43 guides the lifting platform 4 in a first horizontal direction from the outside of the frame 1, and also limits the second roller 45 in a first horizontal direction to prevent it from derailing. A second roller 45 guides the lifting platform 4 in a second horizontal direction from the inside of the frame 1, and also limits the first roller 43 in a second horizontal direction to prevent it from derailing, thus achieving mutual locking between the first roller 43 and the second roller 45. The horizontal displacement tendency of the lifting platform 4 is restricted, thereby improving the vertical movement accuracy of the lifting platform 4 and preventing product swaying, damage, or quality degradation.

[0056] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A lifting device, characterized in that The machine frame (1) comprises a plurality of column assemblies (11) arranged along the first horizontal direction, each column assembly (11) comprising two first sub-columns (111) and second sub-columns (112) arranged along the second horizontal direction, and a feeding channel extending along the first horizontal direction is formed between the plurality of first sub-columns (111) and second sub-columns (112). The lifting platform (4) comprises a lifting frame (41), and side plates (42) are fixedly connected to both sides of the lifting frame (41) along the second horizontal direction; the transmission assembly (3) is installed on the lifting frame (41), and the lifting drive assembly (2) is connected to the side plates (42). The two groups of first rollers (43) are respectively rollingly connected to the outer side walls or inner side walls of adjacent first sub-columns (111) or second sub-columns (112) in the two groups of column assemblies (11) along the first horizontal direction, and the two groups of second rollers (45) are respectively rollingly connected to the inner side walls between the first sub-columns (111) and the second sub-columns (112) in each group along the second horizontal direction.

2. The lift device of claim 1, wherein, The first sub-columns (111) and the second sub-columns (112) are respectively provided with first movement surfaces adapted to the first rollers (43) and second movement surfaces adapted to the second rollers (45).

3. The lift device of claim 1, wherein, The lifting drive assembly (2) comprises a rotating drive member (21) installed on the machine frame (1), a drive shaft (22) arranged at one end of the machine frame (1) and connected to the output end of the rotating drive member (21), a driving wheel (24) fixedly sleeved on both ends of the drive shaft (22), a driven wheel (26) rotatably connected to the other end of the machine frame (1) and corresponding to the driving wheel (24), and a synchronous belt (25) connected between each group of driving wheels (24) and driven wheels (26); one side of the lifting platform (4) and the synchronous belt (25) are fixedly connected.

4. The lift device of claim 2, wherein, ​ 5. The lift device of claim 4, wherein, ​ 6. The lift device of claim 1, wherein, ​ 7. The lift device of claim 6, wherein, The synchronous belt (25) is formed with a first fixed end (251) and a second fixed end (252) on the same side, and the lifting platform (4) is provided with a locking assembly (44) fixedly connected with the first fixed end (251) and the second fixed end (252); the locking assembly (44) comprises a locking side plate (440) fixedly connected with the middle part of the outer side of the side plate (42), a first supporting plate (441) and a second supporting plate (442) fixedly connected horizontally to the locking side plate (440), a first clamping base plate (443) fixed vertically to the top surface of the first supporting plate (441), a second clamping base plate (444) fixed vertically to the bottom surface of the second supporting plate (442), a first movable clamping plate (445) detachably connected to the first clamping base plate (443), and a second movable clamping plate (446) detachably connected to the second clamping base plate (444); the first clamping base plate (443) and the first movable clamping plate (445) are used for clamping the second fixed end (252) of the synchronous belt (25); and the second clamping base plate (444) and the second movable clamping plate (446) are used for clamping the first fixed end (251) of the synchronous belt (25).

8. The lift device of claim 7, wherein, The synchronous belt (25) is arranged between adjacent column assemblies (11), and a tensioning assembly (7) for adjusting the tightness of the synchronous belt (25) is arranged between the adjacent column assemblies (11); the tensioning assembly (7) comprises a connecting arm (71) connected between the two column assemblies (11), the connecting arm (71) is provided with a waist-shaped hole (72), and an adjusting rod (73) is adjustably arranged in the waist-shaped hole (72), and the adjusting rod (73) is connected with a tensioning wheel (74) capable of abutting against one side of the synchronous belt (25).

9. The lift device of claim 7, wherein, The lifting mechanism further comprises a stop mechanism (6), which comprises a linear driving member (61) arranged on the lifting platform (4), a push rod (62) connected to the output end of the linear driving member (61), a stop column (65) arranged in the vertical direction on the rack, and a plurality of stop holes (66) arranged in the vertical direction on the stop column (65) and adapted to the push rod (62); the linear driving member (61) can drive the push rod (62) to move into the stop hole (66).

10. A caching station, characterized by The buffer station body (8) is provided with a plurality of layers of transmission mechanisms arranged in the vertical direction; The lifting device according to any one of claims 1-9 is arranged in the buffer station body (8). ​

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