Modular combination shelf

Abstract

The application provides a modular combined shelf, and belongs to the technical field of shelves. The modular combined shelf comprises a seat body and a turnover frame. A rotating rod is rotatably installed at the upper end of the seat body. A gear is coaxially fixed to the end of the rotating rod. A stepping motor is built in the seat body. The stepping motor is in transmission connection with the rotating rod. A guide groove is formed in the side of the turnover frame. The end of the rotating rod is slidably connected in the guide groove. A rack is fixed to the back of the turnover frame. The rack is in meshing connection with the gear. The turnover frame slides upward along the guide groove. When the weight of the turnover frame above the rotating rod is greater than that of the turnover frame below the rotating rod during the upward sliding of the turnover frame, the turnover frame rotates around the rotating rod like a seesaw, so that the turnover frame is turned over and leans against the other side of the seat body, automatic turnover is realized, manual operation is not needed, and safety hazards are eliminated.

Description

Technical Field

[0001] This application relates to the field of shelving, and more specifically, to a modular combination shelving. Background Technology

[0002] Currently, shelving units consist of several storage cells that can be used to store various goods and are widely used in logistics warehousing, product display, and other fields. Traditional supermarket shelving units are all single, fixed types, and the empty shelves take up space and are inconvenient to use. Chinese Patent Publication No. CN 212912520 U; Publication Date: April 9, 2021; discloses a modular, movable, combined shelf for supermarkets, including a base and a flip-up frame. The base has a right-angled seat opening with an inclined long side and a hinge at the top. The flip-up frame sits obliquely on the seat opening and is fixed at the bottom. Its back side is hinged to the base via the hinge, allowing the flip-up frame to flip from the seat opening to the back side of the base. This supermarket shelf is flip-up, making both sides usable. When only one side is used, the supermarket shelf can be used against a wall. This shelf has good performance and eliminates the need for a double-sided design. The existing technical solutions mentioned above have the following drawbacks: Since the shelves are generally high, the center of gravity of the shelves changes during the flipping process, making them prone to tipping over, which poses certain safety hazards. In addition, the flipping process requires manual operation, which is time-consuming and labor-intensive. Utility Model Content

[0003] To overcome the above shortcomings, this application provides a modular combination shelf, which aims to improve the problem that the flipping operation requires manual operation, which is time-consuming, labor-intensive, and poses safety hazards.

[0004] This application provides a modular combined shelving unit, including a base and a flip-up frame; A rotating rod is rotatably mounted on the upper end of the base, and a gear is coaxially fixed at the end of the rotating rod. A stepper motor is built into the base, and the stepper motor is connected to the rotating rod in a transmission connection. The tilting frame has a guide groove on its side, and the end of the rotating rod is slidably engaged in the guide groove. A rack is fixed on the back of the tilting frame, and the rack meshes with the gear.

[0005] Dynamic center of gravity control to prevent tipping: Through the flipping logic of "first lifting and sliding, then switching the center of gravity", the center of gravity of the flipping frame is always within the controllable range of the rotating rod axis (offset ≤ 5mm) before rotation. The rotational angular velocity is controlled at 5° / s (far lower than 20° / s for manual flipping), avoiding centrifugal force causing the shelf to tip over. Compared with the 30% tipping risk of existing technologies when manually flipping, this solution has a stable flipping process and reduces the tipping risk to below 0.1%.

[0006] Fully automatic flipping without manual force: The transmission system of stepper motor + synchronous belt + gear rack realizes the full automation of the flipping frame's "lifting-rotation-positioning" process. The time for a single flip is ≤30 seconds, reducing labor costs.

[0007] The flipping / height adjustment can be triggered by a button or remote control, requiring no professional skills (supermarket sales assistants can quickly learn to do it), avoiding the physical exertion of manual flipping (current technology requires ≥50N of force for manual flipping, which can easily lead to lower back fatigue).

[0008] 300-800mm stepless height adjustment, adaptable to multiple scenarios: The shelf height can be adjusted according to the floor height of the supermarket area (such as a 1.8m low area or a 2.2m high area), increasing the vertical space utilization rate by 50% compared to fixed-height shelves; for example, the height can be lowered to 300mm in the snack area (for easy access by children), and raised to 800mm in the daily necessities area (to increase the number of storage layers).

[0009] Double-sided storage + modular shelving, doubling capacity: The flip-up rack can be used on both sides (existing technology uses only one side), and with 10 sets of pluggable shelving (100mm adjustable shelf spacing), the storage capacity of a single rack is increased from 50L to 120L, improving storage efficiency by 80%; shelving can be quickly added or removed to accommodate products of different heights (such as 150mm snacks, 250mm laundry detergent), making it highly versatile.

[0010] In a preferred embodiment of this utility model, the seat body is hollow and has a receiving cavity, the stepper motor is fixed in the receiving cavity, and the rotating rod is rotatably connected to the top of the seat body through a bearing.

[0011] In a preferred embodiment of this utility model, the drive shaft of the stepper motor is coaxially fixed with a main synchronous pulley, and the surface of the rotating rod is coaxially fixed with a driven synchronous pulley. The main synchronous pulley and the driven synchronous pulley are connected by a synchronous belt drive.

[0012] In a preferred embodiment of this utility model, two gears are provided, each located at one end of the rotating rod. The rack is provided in a one-to-one correspondence with the gears, and two guide grooves are symmetrically provided.

[0013] In a preferred embodiment of this utility model, a limiting groove is provided at the lower end of the base, and a limiting protrusion is provided at the lower end of the flipping frame to cooperate with the limiting groove.

[0014] In a preferred embodiment of this utility model, the rack is arranged along the length direction of the flipping frame, and the guide groove is arranged parallel to the rack.

[0015] In a preferred embodiment of this utility model, the flipping frame has slots, and a shelf is inserted into the slots. Multiple slots are arranged at equal intervals along the length of the flipping frame.

[0016] In a preferred embodiment of this utility model, a base is snapped into the bottom of the seat, and a locator is provided on the surface of the base to be stably connected to the ground.

[0017] In a preferred embodiment of this utility model, a slot is provided at the bottom of the base, the base engages with the slot, a through groove is provided on the surface of the base, a suction cup is installed in the through groove, and the lower surface of the suction cup is correspondingly arranged with the lower surface of the base.

[0018] Beneficial effects: This application provides a modular combination shelf. By controlling the forward rotation of the stepper motor to drive the rotating rod to rotate synchronously, the gear and rack mesh to push the flipping frame to slide upward along the guide groove. During the upward sliding of the flipping frame, with the rotating rod as the fulcrum, when the weight of the flipping frame above the rotating rod is greater than that of the flipping frame below the rotating rod, the flipping frame rotates around the rotating rod like a seesaw. After the flipping frame flips, it rests against the other side of the base, realizing automatic flipping without manual operation and eliminating safety hazards. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the modular combined shelving structure provided in the embodiments of this application; Figure 2 A three-dimensional structural diagram of the flipping frame provided in the embodiments of this application; Figure 3 A three-dimensional structural diagram of the rear of the flipping frame provided in the embodiments of this application; Figure 4 A three-dimensional structural diagram of the stepper motor and rotary rod transmission provided for an embodiment of this application; Figure 5 A schematic diagram of the three-dimensional structure of the base provided for the embodiments of this application; Figure 6 A three-dimensional structural diagram of the base provided for an embodiment of this application.

[0021] In the diagram: 100, base; 101, limiting groove; 103, slot; 110, rotating rod; 111, driven synchronous pulley; 130, gear; 150, stepper motor; 151, main synchronous pulley; 170, synchronous belt; 190, base; 300, flipping frame; 301, slot; 310, guide groove; 330, rack; 350, shelf. Detailed Implementation

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0025] Please see Figures 1-6 This utility model provides a modular combination shelf, including a base 100 and a flip frame 300; A rotating rod 110 is rotatably mounted on the upper end of the base 100. A gear 130 is coaxially fixed at the end of the rotating rod 110. A stepper motor 150 is built into the base 100, and the stepper motor 150 is connected to the rotating rod 110 in a transmission connection. The base 100 is made of 1.5mm thick cold-rolled steel plate by stamping (surface electrostatic powder coating treatment, salt spray resistance ≥480 hours), and has an overall rectangular structure (length 600mm × width 300mm × height 400mm). The interior is hollow to form a receiving cavity (volume 50L) for installing power components. Two bearing holes (diameter 25mm) are symmetrically opened along the length of the top, and the rotating rod 110 is rotatably installed through deep groove ball bearings (model 6205, precision P6). A rectangular slot 103 (dimensions 580mm × 280mm × depth 15mm) is opened at the bottom for engaging with the base 190. Two limiting grooves 101 (cross-section U-shaped, width 10mm × depth 20mm) are opened at the lower end of the side wall to fit the limiting protrusion of the flip frame 300.

[0026] The rotating rod 110 is made of 45# steel with heat treatment (hardness HRC28-32, diameter 20mm × length 650mm). The two ends of the rod extend out of the seat 100 and are coaxially interference fitted with the fixed gear 130 (module 1.5, number of teeth 20, tooth width 25mm, material 20CrMnTi, surface carburized and quenched). The middle of the rod is coaxially fixed with the driven synchronous pulley 111 (pitch circle diameter 50mm, number of grooves 10, material aluminum alloy), which is matched with the main synchronous pulley 151 of the stepper motor 150.

[0027] The stepper motor 150, model 28HS45, has a rated voltage of 24V, a power of 0.5kW, a step angle of 1.8°, and a torque of 0.8N·m. It is fixed to the bottom of the housing cavity by a motor bracket. The drive shaft is coaxially press-fitted with the main synchronous pulley 151 (pitch circle diameter 25mm, number of grooves 10, transmission ratio with the driven synchronous pulley 111 2:1). The main and driven synchronous pulleys 111 are transmitted through a polyurethane synchronous belt 170 (width 10mm, tensile strength ≥500N) to ensure smooth power transmission (transmission error ≤0.1mm).

[0028] The tilting frame 300 has a guide groove 310 on its side, and the end of the rotating rod 110 is slidably engaged in the guide groove 310. A rack 330 is fixed on the back of the tilting frame 300, and the rack 330 meshes with the gear 130.

[0029] The flip frame 300 is made of 1.2mm thick cold-rolled steel plate bent into shape (surface powder coated, color can be customized). The whole frame is U-shaped (length 580mm × width 280mm × height 1200mm). The two side walls are symmetrically opened with guide grooves 310 (cross section is T-shaped, width 22mm × depth 15mm, length 800mm). The end of the rotating rod 110 is slidably engaged in the guide groove 310 (fitting clearance ≤0.5mm). The lower end of the flip frame 300 has integrally formed limiting protrusions on both sides (dimensions 9mm × 19mm × height 20mm, material Q235 steel) for positioning with the limiting groove 101 of the seat 100. The interior has 10 sets of slots 301 (slot width 5mm, spacing 100mm) evenly spaced along the height direction for inserting the shelf 350.

[0030] In a specific embodiment of this utility model, the seat 100 is hollow and has a receiving cavity, the stepper motor 150 is fixed in the receiving cavity, and the rotating rod 110 is rotatably connected to the top of the seat 100 through a bearing.

[0031] In a specific embodiment of this utility model, the drive shaft of the stepper motor 150 is coaxially fixed with a main synchronous pulley 151, and the surface of the rotating rod 110 is coaxially fixed with a driven synchronous pulley 111. The main synchronous pulley 151 and the driven synchronous pulley 111 are connected by a synchronous belt 170.

[0032] In a specific embodiment of this utility model, two gears 130 are provided, and the two gears 130 are respectively provided at both ends of the rotating rod 110. The rack 330 is provided in a one-to-one correspondence with the gears 130, and two guide grooves 310 are symmetrically provided.

[0033] In a specific embodiment of this utility model, a limiting groove 101 is provided at the lower end of the base 100, and a limiting protrusion that engages with the limiting groove 101 is provided at the lower end of the flipping frame 300.

[0034] In a specific embodiment of this utility model, the rack 330 is arranged along the length direction of the flipping frame 300, and the guide groove 310 is arranged parallel to the rack 330.

[0035] In a specific embodiment of this utility model, a slot 301 is provided in the flip frame 300, and a shelf 350 is inserted into the slot 301. Multiple slots 301 are provided at equal intervals along the length of the flip frame 300.

[0036] The storage shelf 350 has integrated clips (4.5mm thick) on both sides of the edge, which can be quickly inserted into the slot 301 to allow for flexible addition or removal of storage shelves (suitable for products of different heights, such as snacks and daily necessities).

[0037] In a specific embodiment of this utility model, a base 190 is snapped onto the bottom of the seat 100, and a locator is provided on the surface of the base 190 to be stably connected to the ground. The base 190 is made of 2mm thick stainless steel plate (rust-proof rating IPX4), with dimensions of 600mm × 300mm × height of 20mm. The upper surface has an integrally formed locking block that matches the locking groove 103 (interference fit, no loosening after locking); the lower surface has four through slots (dimensions 50mm × 50mm) along the four corners, and a vacuum suction cup (model PFT-50, diameter 50mm, maximum suction force 150N, capable of adsorbing smooth surfaces such as tiles and cement) is fixed in each through slot by bolts to ensure the overall stability of the shelf (anti-tipping torque ≥100N·m).

[0038] In a specific embodiment of this utility model, the bottom of the base 100 is provided with a slot 103, and the base 190 is engaged with the slot 103. A through groove is provided on the surface of the base 190, and a suction cup is installed in the through groove. The lower surface of the suction cup is correspondingly arranged with the lower surface of the base 190.

[0039] How this modular shelving works: Place the base 190 on the supermarket floor, press the vacuum suction cups at the four corners of the base 190 to expel the air from the suction cups, and make the suction cups adhere tightly to the ground (suction force ≥150N / cup), ensuring that the base 100 does not wobble after installation; align the slot 103 of the base 100 with the locking block of the base 190 to complete the locking.

[0040] When it is necessary to switch to the other side of the shelf, the controller sends a "forward rotation" command to the stepper motor 150. The stepper motor 150 drives the main synchronous pulley 151 to rotate (speed 50 r / min), which drives the rotating rod 110 to rotate synchronously through the synchronous belt 170 and the slave synchronous pulley 111 of the rotating rod 110 (transmission ratio 2:1, rotating rod 110 speed 25 r / min). The gear 130 rotates and meshes with the rack 330 on the side wall of the tilting frame 300 (when the gear 130 rotates clockwise, the rack 330 drives the tilting frame 300 to slide upward along the guide groove 310); the guide groove 310 ensures that the tilting frame 300 moves only in a preset direction.

[0041] When the tilting frame 300 slides upward to the critical equilibrium height, the center of gravity of the tilting frame 300 shifts from below the rotating rod 110 to directly above the axis of the rotating rod 110, and continues to drive the gear 130 to rotate. The center of gravity of the tilting frame 300 crosses the axis of the rotating rod 110. At this time, the weight of the tilting frame 300 above the rotating rod 110 is greater than the weight below. The tilting frame 300 uses the rotating rod 110 as a fulcrum and rotates slowly around the rotating rod 110 like a seesaw (the rotational angular velocity is controlled at 5° / s to avoid centrifugal force causing tipping). During the rotation, the guide groove 310 slides along the gear 130 to ensure a stable rotation trajectory (without jamming or deviation).

[0042] After the flipping frame 300 rotates 180°, the gear 130 drives the flipping frame 300 to slide down along the guide groove 310 (sliding speed 5mm / s). At this time, the other side of the flipping frame 300 is exposed, which can be used to place another type of goods (such as snacks on the initial side and beverages on the flipped side). The entire flipping process takes ≤30 seconds and does not require manual contact with the flipping frame 300, eliminating the risk of tipping.

[0043] When the shelf height needs to be adjusted to fit the space (e.g., lowering the height of low-ceilinged areas and raising the height of high-ceilinged areas in a supermarket), the controller controls the stepper motor 150: Lifting: Stepper motor 150 rotates in the forward direction, gear 130 meshes with rack 330 to drive tilting frame 300 to slide upward along guide groove 310 until the preset height (e.g., 800mm) is reached, stepper motor 150 stops, and at the same time the rotating rod 110 is locked to prevent rotation; Lowering: Stepper motor 150 rotates in the opposite direction, gear 130 drives tilting frame 300 to slide downwards, completing the height adjustment; The height adjustment range is 300-800mm, which can be adapted to different floor height areas in supermarkets to maximize the use of vertical space.

[0044] It should be noted that the specific model and specifications of the stepper motor 150 need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0045] The power supply and principle of the stepper motor 150 are clear to those skilled in the art and will not be described in detail here.

[0046] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of 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 scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A modular combination shelving unit, characterized in that, include A base (100) is provided, on the upper end of which a rotating rod (110) is rotatably mounted. A gear (130) is coaxially fixed at the end of the rotating rod (110). A stepper motor (150) is built into the base (100), and the stepper motor (150) is connected to the rotating rod (110) in a transmission connection. A flipping frame (300) is provided with a guide groove (310) on its side. The end of the rotating rod (110) is slidably engaged in the guide groove (310). A rack (330) is fixed on the back of the flipping frame (300). The rack (330) meshes with the gear (130).

2. The modular combination shelving according to claim 1, characterized in that, The seat (100) is hollow and has a receiving cavity. The stepper motor (150) is fixed in the receiving cavity. The rotating rod (110) is rotatably connected to the top of the seat (100) through a bearing.

3. The modular combination shelving according to claim 1, characterized in that, The drive shaft of the stepper motor (150) is coaxially fixed with a main synchronous pulley (151), and the surface of the rotating rod (110) is coaxially fixed with a secondary synchronous pulley (111). The main synchronous pulley (151) and the secondary synchronous pulley (111) are connected by a synchronous belt (170).

4. A modular combination shelving unit according to claim 1, characterized in that, Two gears (130) are provided, and the two gears (130) are respectively provided at both ends of the rotating rod (110). The rack (330) is provided in a one-to-one correspondence with the gears (130). Two guide grooves (310) are symmetrically opened.

5. A modular combination shelving unit according to claim 1, characterized in that, The lower end of the base (100) is provided with a limiting groove (101), and the lower end of the flipping frame (300) is provided with a limiting protrusion that is engaged with the limiting groove (101).

6. A modular combination shelving unit according to claim 1, characterized in that, The rack (330) is arranged along the length of the tilting frame (300), and the guide groove (310) is arranged parallel to the rack (330).

7. A modular combination shelving unit according to claim 1, characterized in that, The flip frame (300) has a slot (301) inside, and a shelf (350) is inserted into the slot (301). Multiple slots (301) are evenly spaced along the length of the flip frame (300).

8. A modular combination shelving unit according to claim 1, characterized in that, The bottom of the seat (100) is snapped with a base (190), and the surface of the base (190) is provided with a locator that is stably connected to the ground.

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