Height-adjustable shelving device

Abstract

The application relates to an adjustable height shelf device, which comprises a shelf assembly, a lifting assembly, a mounting frame structure and a screw rod structure, the mounting frame structure is arranged on the shelf assembly, the screw rod structure comprises a rotating motor, a screw rod, a first sliding block, a second sliding block, a first connecting rod and a second connecting rod, the screw rod has a first thread and a second thread at two ends, the rotation directions of the first thread and the second thread are opposite, a first conveying belt assembly is arranged on the lifting assembly, the inner thread hole of the first sliding block is matched with the first thread, the inner thread of the second sliding block is matched with the second thread, the first end of the first connecting rod is rotatably connected with the first sliding block, the second end of the first connecting rod is rotatably connected with the first conveying belt assembly, the first end of the second connecting rod is rotatably connected with the second sliding block, and the second end of the second connecting rod is rotatably connected with the first conveying belt assembly. The application solves the problem that the center of gravity of the shelf in the prior art is unstable when goods are placed.

Description

Technical Field

[0001] This application relates to the technical field of shelving devices, and more specifically, to a height-adjustable shelving device. Background Technology

[0002] In the warehousing and logistics sector, racking is an essential piece of equipment for storing and managing goods. Traditional racking designs typically include multiple shelves on which goods are placed directly.

[0003] In some traditional shelving designs, goods are placed on shelves at a fixed height, resulting in an uneven distribution of the goods' center of gravity. When heavy or irregularly shaped goods are placed on the shelves, the center of gravity can easily shift, leading to instability and even potential collapse. This instability not only increases the risk of damage to goods but also poses a threat to the safety of operators, especially when heavy goods are placed at heights, where the instability is more pronounced. Utility Model Content

[0004] This application provides an adjustable-height shelving device to solve the problem of unstable center of gravity when goods are placed on existing shelving.

[0005] An adjustable-height shelving device according to this application includes: a shelving assembly; a lifting assembly, the lifting assembly including a mounting frame structure and a lead screw structure, the mounting frame structure being disposed on the shelving assembly, the lead screw structure including a rotary motor, a lead screw, a first slider, a second slider, a first connecting rod, and a second connecting rod, the two ends of the lead screw respectively having a first thread and a second thread, the first thread and the second thread having opposite directions of rotation, the rotary motor being disposed on the shelving assembly, and the lead screw being connected to the output end of the rotary motor; a first conveyor belt assembly, the first conveyor belt assembly being disposed on the lifting assembly; the internal thread hole of the first slider being adapted to the first thread, the internal thread of the second slider being adapted to the second thread, the first end of the first connecting rod being rotatably connected to the first slider, the second end of the first connecting rod being rotatably connected to the first conveyor belt assembly, the first end of the second connecting rod being rotatably connected to the second slider, the second end of the second connecting rod being rotatably connected to the first conveyor belt assembly, the distance between the first connecting rod and the second connecting rod gradually increasing from the second end of the first connecting rod to the first end of the first connecting rod.

[0006] Furthermore, the first conveyor belt assembly includes a first flat plate and a first conveyor belt structure, the first conveyor belt structure being disposed on the upper surface of the first flat plate, and the second end of the first connecting rod and the second end of the second connecting rod being connected to the lower surface of the first flat plate.

[0007] Furthermore, the lower part of the first plate has a first protrusion and a second protrusion, the second end of the first connecting rod is rotatably engaged with the first protrusion, and the second end of the second connecting rod is rotatably engaged with the second protrusion.

[0008] Furthermore, the first link comprises two links, and the second link comprises two links. The two first links are rotatably connected to the first slider, and the two second links are rotatably connected to the second slider.

[0009] Furthermore, the lifting assembly also includes a limiting structure, which is connected to the mounting frame structure and the first plate respectively, to limit the lifting of the first conveyor belt assembly.

[0010] Furthermore, the limiting structure includes a limiting rod and a limiting sleeve adapted to the limiting rod. The lower end of the limiting rod is connected to the mounting frame structure, the upper end of the limiting sleeve is connected to the lower surface of the first plate, and the second end of the limiting rod is located inside the limiting sleeve.

[0011] Furthermore, the lead screw structure also includes a pulley and a belt. The lead screw includes a first lead screw and a second lead screw. The output end of the rotating motor is connected to the first lead screw, and the pulley is mounted on the second lead screw. The first lead screw and the second lead screw are driven together by a belt.

[0012] Furthermore, the first lead screw corresponds to a first conveyor belt assembly, the second lead screw corresponds to a first conveyor belt assembly, and the first conveyor belt assembly corresponds to two first connecting rods and two second connecting rods.

[0013] Furthermore, the lifting assembly also includes a light rod structure, with both ends of the light rod structure respectively mounted on the mounting frame structure, and the light rod structure passing through the light holes of the first slider and the second slider.

[0014] Furthermore, the racking device also includes a second conveyor belt assembly, which is disposed on the racking assembly and located below the lifting assembly.

[0015] By applying the technical solution of this application, the two ends of the lead screw have a first thread and a second thread with opposite directions of rotation. The first slider engages with the first thread, and the second slider engages with the second thread. When the lead screw is rotated, the first and second sliders simultaneously move closer or further apart. This changes the relative positions of the first and second sliders with the first conveyor belt assembly, thereby driving the first connecting rod and the second connecting rod to raise or lower the first conveyor belt assembly. This achieves the raising and lowering of the first conveyor belt assembly. The raising and lowering of the first conveyor belt assembly changes the center of gravity of the racking device, thus improving the stability of the racking device. The technical solution of this application effectively solves the problem of unstable center of gravity in existing racking devices. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective structural schematic diagram of the shelving device according to an embodiment of this application is shown; Figure 2 It shows Figure 1 A schematic diagram of the internal structure of the shelving unit; Figure 3 It shows Figure 1 A partial three-dimensional structural diagram of the shelving unit.

[0019] The above figures include the following reference numerals: 10. Shelf assembly; 20. Lifting assembly; 21. Mounting frame structure; 22. Screw structure; 221. Rotating motor; 222. Screw; 223. First slider; 224. Second slider; 225. First connecting rod; 226. Second connecting rod; 227. Pulley; 228. Belt; 23. Limiting structure; 231. Limiting rod; 232. Limiting sleeve; 30. First conveyor belt assembly; 31. First plate; 32. First conveyor belt structure; 40. Second conveyor belt assembly. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] like Figures 1 to 3 As shown, the height-adjustable shelving device of this embodiment includes: a shelving assembly 10, a lifting assembly 20, and a first conveyor belt assembly 30. The lifting assembly 20 includes a mounting frame structure 21 and a lead screw structure 22. The mounting frame structure 21 is mounted on the shelving assembly 10. The lead screw structure 22 includes a rotary motor 221, a lead screw 222, a first slider 223, a second slider 224, a first connecting rod 225, and a second connecting rod 226. The two ends of the lead screw 222 have a first thread and a second thread, respectively, with opposite directions of rotation. The rotary motor 221 is mounted on the shelving assembly 10, and the lead screw 222 is connected to the output end of the rotary motor 221. The first conveyor belt assembly 30 is mounted on the lifting assembly 20. The internal thread of the first slider 223 is adapted to the first thread, the internal thread of the second slider 224 is adapted to the second thread, the first end of the first connecting rod 225 is rotatably connected to the first slider 223, the second end of the first connecting rod 225 is rotatably connected to the first conveyor belt assembly 30, the first end of the second connecting rod 226 is rotatably connected to the second slider 224, and the second end of the second connecting rod 226 is rotatably connected to the first conveyor belt assembly 30. The distance between the first connecting rod 225 and the second connecting rod 226 gradually increases from the second end of the first connecting rod 225 to the first end of the first connecting rod 225.

[0024] Applying the technical solution of this embodiment, the two ends of the lead screw 222 have a first thread and a second thread with opposite directions of rotation. The first slider 223 engages with the first thread, and the second slider 224 engages with the second thread. Thus, when the lead screw 222 is rotated, the first slider 223 and the second slider 224 simultaneously move closer or further away. At this time, the relative positions between the first slider 223 and the second slider 224 and the first conveyor belt assembly 30 change. This causes the first connecting rod 225 and the second connecting rod 226 to drive the first conveyor belt assembly 30 to rise or fall. This achieves the raising and lowering of the first conveyor belt assembly 30. By raising and lowering the first conveyor belt assembly 30, the center of gravity of the racking device changes, thereby improving the stability of the racking device. The technical solution of this embodiment effectively solves the problem of unstable center of gravity in existing racking devices.

[0025] It should be noted that the shelf device in this embodiment is used in conjunction with the AGV trolley. During use, the shelf device is placed on top of the AGV trolley. The shelf assembly 10 has a groove on the side facing the AGV trolley, and the AGV trolley has a protrusion on the side facing the shelf assembly 10 that mates with the groove. This engagement of the protrusion and groove not only positions the AGV trolley and the shelf assembly 10 but also secures them. When the previous process transports the flower basket containing solar panels to the first conveyor belt structure 32, the first conveyor belt structure 32 rotates, stopping the flower basket at a predetermined position. The drive unit of the first conveyor belt structure 32 can be manually rotated by turning the shaft of the first conveyor belt structure 32 to transport the flower basket; however, this embodiment uses a motor drive.

[0026] Additionally, the independence of the first connecting rod 225 and the second connecting rod 226 here means that the first connecting rod 225 and the second connecting rod 226 are not connected. The rotating motor 221 in this embodiment is a reversible motor. The thread direction of the lead screw 222 is described below: When a left-hand thread rotates clockwise, the nut moves to the left. When a right-hand thread rotates clockwise, the nut moves to the right. The two ends of the lead screw 222 have opposite thread directions; that is, one end of the lead screw 222 has a left-hand thread, and the other end has a right-hand thread. This design ensures that when the lead screw 222 rotates, the two sliders move in opposite directions. The specific thread direction of the sliders (first slider 223 and second slider 224): If one end of the lead screw 222 has a left-hand thread, the internal thread of the slider it mates with must also be left-hand; if the other end of the lead screw 222 has a right-hand thread, the internal thread of the slider it mates with must also be right-hand. This way, when the lead screw 222 rotates, the two sliders move away from each other. The first thread and the second thread are identical except for their opposite directions of rotation; for example, the pitch of the first thread and the pitch of the second thread are the same.

[0027] In this embodiment, the first conveyor belt assembly 30 includes a first flat plate 31 and a first conveyor belt structure 32. The first conveyor belt structure 32 is disposed on the upper surface of the first flat plate 31, and the second ends of the first connecting rod 225 and the second connecting rod 226 are both connected to the lower surface of the first flat plate 31. The first flat plate 31 facilitates the placement of the first conveyor belt structure 32 and the connection with the first connecting rod 225 and the second connecting rod 226. The first flat plate 31 has two upright plates at the front and two upright plates at the rear. The first conveyor belt structure 32 includes two rollers. One roller is rotatably mounted on the two front upright plates and located between the two rear upright plates, and the other roller is rotatably mounted on the two rear upright plates and located between the two rear upright plates. The output shaft of the motor is connected to one of the rollers, and the conveyor belt is located circumferentially outside the two rollers.

[0028] like Figure 3 As shown, in this embodiment, the lower part of the first plate 31 has a first protrusion and a second protrusion. The second end of the first connecting rod 225 is rotatably engaged with the first protrusion, and the second end of the second connecting rod 226 is rotatably engaged with the second protrusion. The first and second protrusions effectively prevent interference between the first connecting rod 225 and the second connecting rod 226 and the slider and the first plate 31 during movement. It should be noted that the first and second protrusions have the same structure. The first protrusion includes two upright plates, and a pivot shaft is fixed to the two upright plates. The pivot shaft passes through a hole in the first connecting rod 225, the diameter of which is slightly larger than the diameter of the pivot shaft. The distance between the two upright plates is greater than the thickness of the first connecting rod 225, allowing the first connecting rod 225 to rotate relative to the pivot shaft.

[0029] like Figures 1 to 3 As shown, in this embodiment, the technical solution includes two first connecting rods 225 and two second connecting rods 226. The two first connecting rods 225 are rotatably connected to the first slider 223, and the two second connecting rods 226 are rotatably connected to the second slider 224. This structure makes the force on the first plate 31 more balanced. It should be noted that, similarly, the first slider 223 has two third protrusions, each rotatably connected to one of the first connecting rods 225, and the second slider 224 has two fourth protrusions, each rotatably connected to one of the second connecting rods 226. Their structures are the same as the first protrusions and will not be described again here. The two first connecting rods 225 are parallel, and the first connecting rods 225 and the second connecting rods 226 are arranged in a V-shape. The first connecting rods 225 and the second connecting rods 226 have the same length and the same inclination angle (an acute angle formed with the horizontal plane).

[0030] like Figure 3As shown, in this embodiment, the lifting assembly 20 further includes a limiting structure 23, which is connected to the mounting frame structure 21 and the first plate 31 to limit the lifting of the first conveyor belt assembly 30. The limiting structure 23 makes the lifting of the first plate 31 more stable. When the lifting of the first plate 31 is misaligned, the constraint of the limiting structure 23 allows the first plate 31 to continue to lift smoothly, and also avoids damage to the first link 225 and the second link 226 due to uneven force on the first plate 31.

[0031] like Figure 3 As shown, in this embodiment, the limiting structure 23 includes a limiting rod 231 and a limiting sleeve 232 adapted to the limiting rod 231. The lower end of the limiting rod 231 is connected to the mounting frame structure 21, and the upper end of the limiting sleeve 232 is connected to the lower surface of the first plate 31. The second end of the limiting rod 231 is located inside the limiting sleeve 232. The above structure has low processing cost and is easy to operate. It should be noted that there are multiple limiting rods 231 and multiple limiting sleeves 232 corresponding to the limiting rods 231. In this embodiment, one first conveyor belt assembly 30 corresponds to four limiting rods 231, and there are two first conveyor belt assemblies 30.

[0032] like Figures 1 to 3 As shown in the technical solution of this embodiment, the lead screw structure 22 further includes a pulley 227 and a belt 228. The lead screw 222 includes a first lead screw and a second lead screw. The output end of the rotary motor 221 is connected to the first lead screw, and the pulley is mounted on the second lead screw. The first and second lead screws are driven by a belt. The above structure saves costs, and the movement of two lead screws can be controlled by one motor. That is, the rotation of the rotary motor 221 drives the rotation of the first lead screw, and the belt drive drives the rotation of the second lead screw.

[0033] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the first lead screw corresponds to one first conveyor belt assembly 30, the second lead screw corresponds to another first conveyor belt assembly 30, and one first conveyor belt assembly 30 corresponds to two first connecting rods 225 and two second connecting rods 226. The above structure is compact and cost-effective, meaning that when two first conveyor belt assemblies 30 are needed, there is no need to readjust new equipment.

[0034] like Figures 1 to 3As shown, in this embodiment, the lifting assembly 20 further includes a guide rod structure. Both ends of the guide rod structure are respectively mounted on the mounting frame structure 21. The guide rod structure passes through the light holes of the first slider 223 and the second slider 224. The constraint of the guide rod structure on the sliders converts the rotation of the lead screw 222 into the translation of the sliders (first slider 223 and second slider 224). It should be noted that the axial direction of the guide rod structure is parallel to the axial direction of the lead screw 222.

[0035] like Figure 1 and Figure 2 As shown, in this embodiment, the shelving device further includes a second conveyor belt assembly 40, which is disposed on the shelving assembly 10 and located below the lifting assembly 20. The second conveyor belt assembly 40 is used to control empty flower baskets. In this way, one shelving device can accommodate two types of flower baskets, saving on shelving device costs. It eliminates the need for separate shelves for flower baskets containing solar cells and for empty flower baskets; a single shelf can be used for unified management, and the placement of both types of flower baskets can be achieved through different layer management. The second conveyor belt assembly 40 includes a second flat plate and a second conveyor belt structure. The first conveyor belt structure 32 and the second conveyor belt structure are identical. The second conveyor belt structure also includes two conveyor rollers and a conveyor belt. The conveyor belt is disposed circumferentially outside the two conveyor rollers, which are rotatably mounted. The conveyor rollers can be connected to a motor or operated manually.

[0036] It should be noted that the shelf assembly 10 includes four legs and two side panels. The four legs are connected to the lower surface of the second plate, and the two side panels are connected to the second plate and located on the left and right sides. There are no side panels in the front and back directions, which are used for the entry and exit of the flower basket. The mounting frame structure 21 includes a base plate and two front and back side panels, and the first plate 31 is located on the upper part of the mounting frame structure 21.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A height-adjustable shelving device, characterized in that, include: Shelf components (10); The lifting assembly (20) includes a mounting frame structure (21) and a lead screw structure (22). The mounting frame structure (21) is mounted on the shelf assembly (10). The lead screw structure (22) includes a rotary motor (221), a lead screw (222), a first slider (223), a second slider (224), a first connecting rod (225), and a second connecting rod (226). The two ends of the lead screw (222) have a first thread and a second thread, respectively. The first thread and the second thread have opposite directions of rotation. The rotary motor (221) is mounted on the shelf assembly (10). The lead screw (222) is connected to the output end of the rotary motor (221). A first conveyor belt assembly (30) is disposed on the lifting assembly (20); The internal thread hole of the first slider (223) is adapted to the first thread, the internal thread of the second slider (224) is adapted to the second thread, the first end of the first connecting rod (225) is rotatably connected to the first slider (223), the second end of the first connecting rod (225) is rotatably connected to the first conveyor belt assembly (30), the first end of the second connecting rod (226) is rotatably connected to the second slider (224), the second end of the second connecting rod (226) is rotatably connected to the first conveyor belt assembly (30), and the distance between the first connecting rod (225) and the second connecting rod (226) gradually increases from the second end of the first connecting rod (225) to the first end of the first connecting rod (225).

2. The height-adjustable shelving device according to claim 1, characterized in that, The first conveyor belt assembly (30) includes a first flat plate (31) and a first conveyor belt structure (32). The first conveyor belt structure (32) is disposed on the upper surface of the first flat plate (31). The second end of the first connecting rod (225) and the second end of the second connecting rod (226) are both connected to the lower surface of the first flat plate (31).

3. The height-adjustable shelving device according to claim 2, characterized in that, The lower part of the first plate (31) has a first protrusion and a second protrusion, the second end of the first connecting rod (225) is rotatably engaged with the first protrusion, and the second end of the second connecting rod (226) is rotatably engaged with the second protrusion.

4. The height-adjustable shelving device according to claim 3, characterized in that, The first link (225) includes two links, and the second link (226) includes two links. The two first links (225) are rotatably connected to the first slider (223), and the two second links (226) are rotatably connected to the second slider (224).

5. The height-adjustable shelving device according to claim 2, characterized in that, The lifting assembly (20) also includes a limiting structure (23), which is connected to the mounting frame structure (21) and the first plate (31) respectively to limit the lifting of the first conveyor belt assembly (30).

6. The height-adjustable shelving device according to claim 5, characterized in that, The limiting structure (23) includes a limiting rod (231) and a limiting sleeve (232) adapted to the limiting rod (231). The lower end of the limiting rod (231) is connected to the mounting frame structure (21), and the upper end of the limiting sleeve (232) is connected to the lower surface of the first plate (31). The second end of the limiting rod (231) is located inside the limiting sleeve (232).

7. The height-adjustable shelving device according to claim 5, characterized in that, The lead screw structure (22) further includes a pulley (227) and a belt (228). The lead screw (222) includes a first lead screw and a second lead screw. The output end of the rotating motor (221) is connected to the first lead screw. The pulley (227) is disposed on the second lead screw. The first lead screw and the second lead screw are driven by a belt.

8. The height-adjustable shelving device according to claim 7, characterized in that, The first lead screw corresponds to one first conveyor belt assembly (30), the second lead screw corresponds to one first conveyor belt assembly (30), and one first conveyor belt assembly (30) corresponds to two first connecting rods (225) and two second connecting rods (226).

9. The height-adjustable shelving device according to claim 1, characterized in that, The lifting assembly (20) also includes a light rod structure, with both ends of the light rod structure respectively disposed on the mounting frame structure (21), and the light rod structure passing through the light hole of the first slider (223) and the light hole of the second slider (224).

10. The height-adjustable shelving device according to any one of claims 1 to 9, characterized in that, The racking device also includes a second conveyor belt assembly (40), which is disposed on the racking assembly (10) and located below the lifting assembly (20).

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