Heavy storage shelf capable of electrically adjusting floor height

Abstract

The utility model discloses a heavy storage shelf capable of electrically adjusting layer height. The heavy storage shelf comprises a lifting mechanism, layer plates and side plates, the laminates sequentially comprise a first laminate, a second laminate, a third laminate, a fourth laminate and a top plate from bottom to top; two ends of the first laminate, the third laminate and the top plate are respectively fixed at the lower parts, the middle parts and the tops of the two side plates; the lifting mechanism comprises a double-output speed reducer, a transmission shaft, a 90-degree right-angle steering gear and a positive and negative thread ball screw which are connected in sequence; the positive and negative thread ball screw vertically penetrates through the first, second, third and fourth laminates, and positive and negative thread screw nuts on the positive and negative thread ball screw are fixedly connected with the second and fourth laminates respectively. The second layer plate and the fourth layer plate can be simultaneously driven to synchronously and reversely move through the lifting mechanism, the layer height between the first layer plate and the second layer plate, the layer height between the second layer plate and the third layer plate, the layer height between the third layer plate and the fourth layer plate and the layer height between the fourth layer plate and the top plate can be simultaneously adjusted so as to adapt to stacking and placing of objects with different heights, and the utilization rate of vertical storage space can be increased.

Description

Technical Field

[0001] The utility model relates to the field of storage shelves in the logistics industry, in particular to a heavy-duty storage shelf with electrically adjustable layer height. Background Art

[0002] Warehouse racking is a type of equipment used for storage, loading, unloading, handling, and transportation, and is widely used in the logistics industry for packaging and storage. Warehouse racking is very diverse, and common types include shelf-type, pallet-type, drive-through type, gravity-type, press-in type, mezzanine type, steel structure platform, cantilever type, mobile type, drawer type, mobile type, and rotary type. In addition, there are some specific types of racking, such as aisle-type, shuttle type, picking type, narrow aisle type, and flow type. Each type of racking has its own unique characteristics and application scenarios. For example, beam-type racking is suitable for ordinary industrial forklifts to pass through, while cantilever racking is used to store long or irregular items.

[0003] The load-bearing capacity of warehouse racks is a crucial parameter, determining the maximum weight they can carry. Depending on their classification and design, warehouse racks can be categorized into three types: light, medium, and heavy. Heavy-duty racks, with load capacities ranging from 800kg to 5 tons per layer, are suitable for warehouses requiring high load capacities and are widely used in warehousing and logistics. Among these, beam racking, also known as pallet racking, is the most common form of heavy-duty racking. Its simple and reliable structure makes it suitable for storing a wide variety of goods, especially when accessed by forklifts or stackers.

[0004] The space utilization rate of storage shelves refers to the ratio of the space occupied by shelves to the total warehouse space. Improving the space utilization rate of storage shelves can help make full use of warehouse space, thereby improving storage efficiency and the overall operational efficiency of the warehouse.

[0005] Heavy-duty shelves can effectively utilize storage space by stacking goods at high altitudes. Double-deep shelves are designed for expansion in the depth direction, which can reduce the number of aisles, increase storage density, and are suitable for storing large quantities of goods, improving space utilization. In addition, the use of multi-layer shelves can improve the utilization of vertical storage space. Although the height of each layer of general multi-layer heavy-duty shelves can be selected during construction, the height of each layer cannot be easily adjusted after construction. Therefore, it cannot adapt well to the stacking of goods at different heights. For example, if the goods stacked in some storage locations are low, it will cause a certain amount of waste of vertical storage space. If the shelf height is adjustable, the problem of vertical storage space waste can be reduced to a certain extent.

[0006] Chinese invention patent CN 114313721 A discloses a storage shelf. Through the cooperation of arc-shaped fixing columns and connecting rods, the device can be installed by snapping the connecting rods into the interior of the connecting grooves, so that the fixing brackets can be raised or lowered at any time, thereby adjusting the area where items can be placed.

[0007] Chinese utility model patent CN 211380585 U discloses a multifunctional shelf with adjustable layer height. By providing an adjustment device between each two adjacent groups of placement boards, the distance between the two adjacent groups of horizontal boards can be adjusted to accommodate the storage of goods of different heights.

[0008] However, the shelf adjustment methods in the aforementioned patents are all manual, resulting in poor synchronization and the possibility that the shelves may not be completely level after adjustment. Furthermore, manual adjustment is inefficient and can only be performed when the shelves are empty. Once goods are placed, adaptive height adjustment is difficult. Furthermore, the future development trend of warehouse shelving is automation and intelligence. The manual height adjustment method in the aforementioned patents cannot be adapted for automated shelf lifting and lowering, making it difficult to integrate with intelligent warehouse shelving. Utility Model Content

[0009] In order to solve the above problems, the utility model provides a heavy-duty storage shelf with electrically adjustable layer height.

[0010] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0011] The utility model provides a heavy-duty storage shelf with electrically adjustable layer height, comprising a lifting mechanism, layer panels and side panels; the side panels form a group of two and are installed on the warehouse floor; the layer panels are arranged between a group of side panels, and the layer panels include, from bottom to top, a first layer panel, a second layer panel, a third layer panel, a fourth layer panel and a top panel, wherein the two ends of the top panel, the third layer panel and the first layer panel are respectively fixedly connected to the top, middle and lower parts of the two side panels; the lifting mechanism comprises a dual-output reducer, a transmission shaft, a 90° right-angle steering gear, a forward and reverse tooth ball screw and a guide column; the dual-output reducer and the 90° right-angle steering gear are arranged on the ground below the first layer panel, the two output ends of the dual-output reducer are respectively connected to one end of the two transmission shafts, and the other ends of the two transmission shafts are respectively connected to two 90° right-angle steering gears, and the two 90° right-angle steering gears are installed on the inner sides of the side panels. Center position; the bottom end of the positive and negative thread ball screw is connected to the 90° right-angle steering gear, and after the positive and negative thread ball screw passes through the first layer, the second layer, the third layer and the fourth layer vertically from bottom to top, its top end is fixed on the bearing seat at the bottom of the top plate, and the bearing seat is fixed to the center position of the inner side of the side plate; the positive and negative thread ball screw is provided with a positive thread screw nut fixedly connected to the second layer and a negative thread screw nut fixedly connected to the fourth layer; four guide columns are provided, which pass through the four corners of the first layer, the second layer, the third layer and the fourth layer vertically respectively, the top of the guide column is fixedly connected to the top plate, and the bottom is fixed to the ground; guide sleeves are provided on the four corners of the second layer and the fourth layer, and the guide sleeves are arranged on the guide column and slidably connected to the guide column; the side panel is provided with a lifting switch for controlling the forward and reverse rotation of the dual-output reducer.

[0012] Furthermore, the heavy-duty storage shelves with electrically adjustable layer heights provided by the utility model also include an alarm device and 8 groups of through-beam sensors. The alarm device is electrically connected to the through-beam sensors, and the alarm device is provided with 8 indicator lights corresponding one-to-one to the through-beam sensors, and a speaker; the 8 groups of through-beam sensors include two groups of first through-beam sensors, two groups of second through-beam sensors, two groups of third through-beam sensors and two groups of fourth through-beam sensors, which are arranged successively under the top plate, the fourth layer, the third layer and the second layer, and the two groups of through-beam sensors under the same layer are installed at the same height.

[0013] Furthermore, the first and third counter-radiation sensors are installed on the side panels and are located at one quarter and three quarters of the width of the side panels, respectively; the second and fourth counter-radiation sensors are fixed on both sides below the fourth and second panels through connecting parts, respectively, and are located at one quarter and three quarters of the width of the fourth and second panels, respectively.

[0014] Furthermore, the dual-output reducer is electrically connected to the alarm device.

[0015] Furthermore, the shelf is double-deep in width, with two storage locations in the width direction and n storage locations in the length direction, and the entire shelf is provided with 10×n storage locations.

[0016] Furthermore, the storage location is provided with a storage location identification plate, and the storage location identification plate is arranged on both sides of the layer board.

[0017] Furthermore, the side panels are fixed to the warehouse floor via a reinforced base.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The utility model provides a heavy-duty warehouse shelf with electrically adjustable shelf heights. A dual-output speed reducer drives the synchronous forward and reverse rotation of the transmission rods, which is then converted by a 90° right-angle steering gear into the synchronous up and down movement of the positive and negative threaded ball screws on both sides. This simultaneously drives the second and fourth shelves to move in opposite directions. This allows for simultaneous adjustment of the shelf heights between the first and second shelves, the second and third shelves, the third and fourth shelves, and the fourth shelf and the top shelf to accommodate stacking items of varying heights. The compact structure and high synchronization ensure precise control of the displacement of the second and fourth shelves, ensuring that the second and fourth shelves remain level during adjustment. Compared to manual lifting, this utility model utilizes electrically controlled shelf height adjustment, which is more efficient, stable, and reliable. Furthermore, the second and fourth shelves can be adjusted up and down not only when unloaded but also after items are placed. This flexible and convenient operation offers greater applicability and maximizes the utilization of vertical storage space, thereby improving storage efficiency and overall warehouse operational efficiency.

[0020] Furthermore, the storage rack of the present invention adopts a double-depth design. When aisles are left on both sides, it can replace two sets of ordinary pallet racks for cargo storage. Goods can be stored and retrieved on both sides, making the storage and retrieval method flexible and convenient. Only one set of lifting devices is required to complete the automatic lifting and lowering transformation of the shelves equivalent to two sets of ordinary racks, which minimizes the equipment cost of adding lifting devices. When the heavy-duty storage rack of the present invention has an aisle only on one side, it increases the storage area in the horizontal depth direction compared to the arrangement with aisles on both sides, improves the utilization rate of the horizontal storage space, and thus further improves the overall space utilization rate.

[0021] Furthermore, the storage shelves of the present invention are provided with a total of eight groups of through-beam sensors below the second, third, fourth layers and the top plate, which are respectively used to detect the distance between the goods stacked on the two rows of storage positions of the first, second, third, and fourth layers and the layer above them. Regardless of whether the layer height is adjusted first and then the goods are stacked, or the goods are stacked first and then the layer height is adjusted, when the goods on any row of storage positions of the first, second, third, and fourth layers block the signal of the corresponding through-beam sensor, the corresponding indicator light on the alarm device lights up, and the alarm device sounds an alarm, and the dual-output reducer stops rotating, so that a suitable gap can be left between the goods and the layer above them, so that the vertical storage space can be utilized as much as possible, while avoiding the problem that when the goods are stacked first and then the layer height is adjusted, the operator is unable to observe the distance between the goods high on the shelf and the layer above it on the ground. By sending a signal to the alarm device through the through-beam sensor, and the alarm device responding, it triggers the dual-output reducer to cut off the power and stop working, thus realizing the automatic control of the lifting of the shelf. It is not only suitable for manually driven forklifts or stackers to stack goods, but also has strong scalability, which is convenient for subsequent intelligent transformation. After the introduction of the intelligent control system, AGV forklifts and AGV stackers can be used to automatically store and retrieve goods, and AGV can cooperate with the automatic height adjustment of the shelf to store and retrieve goods.

[0022] Furthermore, each storage location on the shelf is equipped with a storage location identification plate, which can be used to number the storage location and identify the stored goods, facilitating warehouse management. After the introduction of the intelligent control system, the storage location information can also be entered into the system to further improve the efficiency of warehouse operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0024] In the attached figure:

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a front view of the utility model;

[0027] Among them: 1. Dual-output reducer; 2. Drive shaft; 3. Bearing seat; 4. 90° right-angle steering gear; 5. Coupling; 6. Positive and negative thread ball screw; 7. Positive thread screw nut; 8. Negative thread screw nut; 9. Guide column; 10. Guide sleeve; 11. Side panel; 12. First layer; 13. Second layer; 14. Third layer; 15. Fourth layer; 16. Top panel; 17. First beam sensor; 18. Alarm device; 19. Indicator light; 20. Lift switch; 21. Storage location identification plate; 22. Reinforced base; 23. Stacking rack; 24. Second beam sensor; 25. Third beam sensor; 26. Fourth beam sensor. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings.

[0029] See also Figure 1-2 The heavy-duty storage shelf with electrically adjustable layer height provided by the present invention includes a lifting mechanism, a layer plate, a side plate 11 and a lifting switch 20. The side plate 11 is fixed to a designated position on the warehouse floor by a reinforced base 22. The layer plate is arranged between two corresponding side plates. The layer plates include, from bottom to top, a first layer plate 12, a second layer plate 13, a third layer plate 14, a fourth layer plate 15 and a top plate 16, wherein both ends of the top plate 16 are fixedly connected to the tops of the two side plates 11, both ends of the third layer plate 14 are fixedly connected to the middle of the two side plates 11, and both ends of the first layer plate 12 are fixedly connected to the bottoms of the two side plates 11.

[0030] The lifting mechanism includes a dual-output reducer 1, a transmission shaft 2, a bearing seat 3, a 90° right-angle steering gear 4, a coupling 5, a positive and negative thread ball screw 6, a positive thread screw nut 7, a negative thread screw nut 8, a guide column 9 and a guide sleeve 10. The dual-output reducer 1 is set on the ground below the first layer 12, and the two output ends of the dual-output reducer 1 are respectively connected to one end of the two transmission shafts 2, and the other ends of the two transmission shafts 2 are respectively connected to the two 90° right-angle steering gears 4 through the coupling 5; the transmission shaft 2 is located on the axis in the length direction of the layer; the two 90° right-angle steering gears 4 are set on the ground below the first layer 12 and are respectively located on the inner sides of the two side plates 11; the bottom end of the positive and negative thread ball screw 6 is connected to the 90 The right-angle steering gear 4 is connected, and a positive and negative thread ball screw 6 is provided with a positive thread screw nut 7 and a negative thread screw nut 8; the positive and negative thread ball screw 6 passes vertically through the first layer 12, the second layer 13, the third layer 14 and the fourth layer 15 from bottom to top, and its top is fixed to the bearing seat 3 located at the bottom of the top plate 16 and fixed to the inner center position of the top of the side plate 11, and the positive thread screw nut 7 and the negative thread screw nut 8 are respectively fixedly connected to the second layer 13 and the fourth layer 15 through the screw nut connecting seat. Four guide columns 9 are provided, which pass vertically through the four corners of the first layer 12, the second layer 13, the third layer 14 and the fourth layer 15 respectively, and the top of the guide column 9 is fixedly connected to the top plate 16, and the bottom of the guide column 9 is fixed to the ground. Guide sleeves 10 are provided at the four corners of the second and fourth layers 13 and 15, and the guide sleeves 10 are sleeved on the guide posts 9, which are slidably connected to the guide sleeves 10. The side panel 11 is provided with a lifting switch 20 for controlling the forward and reverse rotation of the dual-output reducer 1.

[0031] Furthermore, in the present invention, the shelf is designed to have a double-depth width, that is, two groups of stacking racks 23 (goods) can be placed in the width direction, and n groups of stacking racks 23 (goods) can be placed in the length direction according to the selection of the plate and the design of the load-bearing capacity. Then the entire shelf is provided with 10×n storage locations, and each storage location is marked with a storage location identification plate 21, and the storage location identification plate 21 is set on both sides of the shelf.

[0032] Furthermore, the present invention is equipped with a through-beam sensor and an alarm device 18, which are electrically connected to the alarm device. The through-beam sensor includes two sets of first through-beam sensors 17 located at an appropriate distance below the top plate 16, two sets of second through-beam sensors 24 located at an appropriate distance below the fourth layer plate 15, two sets of third through-beam sensors 25 located at an appropriate distance below the third layer plate 14, and two sets of fourth through-beam sensors 26 located at an appropriate distance below the second layer plate 13. The first and third through-beam sensors 17, 25 are mounted on the side plate 11, respectively, at one-quarter and three-quarters of the width of the side plate 11. The second through-beam sensor 24 is fixed to both sides below the fourth layer plate 15 via connectors, respectively, at one-quarter and three-quarters of the width of the fourth layer plate 15. The fourth through-beam sensor 26 is fixed to both sides below the second layer plate 13 via connectors, respectively, at one-quarter and three-quarters of the width of the second layer plate 13. The two sets of through-beam sensors below the same layer plate are arranged at the same height. The alarm device 18 is provided on the side panel 11. The alarm device 18 is provided with a speaker and 8 indicator lights 19. The 8 indicator lights 19 correspond to the above 8 groups of beamforming sensors. When the signal of any one or more groups of beamforming sensors is blocked by the goods, the corresponding indicator lights 19 light up and the speaker sounds an alarm. If the indicator light 19 lights up and the alarm sounds during the adjustment of the shelf, the operator can manually turn off the lifting switch 20 to prevent the shelf from moving further. If the shelf does not move and the indicator light 19 lights up and the alarm sounds as soon as the goods are put in, it indicates that the distance between the goods on the corresponding shelf and the shelf above it is less than the preset value. If the distance is too small, it will make it difficult to store and retrieve the goods. It is also easy for the goods to collide with the shelf during the storage and retrieval process, causing safety problems. At this time, the lifting switch 20 should be turned on to increase the distance between the goods and the shelf above it until the indicator light 19 goes out and the alarm stops.

[0033] The one-to-one correspondence between the through-beam sensor and the indicator light is conventional technology. A through-beam sensor with an indicator light can be purchased and installed. The fact that the indicator light activates the alarm is also conventional technology. There are no software or program improvements involved, nor are there any method features, thus meeting the requirements for utility model protection.

[0034] Furthermore, the dual-output reducer 1 is electrically connected to the alarm device 18, including wireless or wired connection methods. A dual-output reducer 1 product with wireless or wired signal receiving function can be selected. When the dual-output reducer 1 is working, it stops working when it receives the trigger signal of the alarm device. This function can be achieved using conventional technology. There is no improvement in software or procedures, and there is no method feature. It meets the requirements of the protection object of the utility model.

[0035] When the dual-output reducer 1 is not operating and receives a trigger signal from the alarm device 18, it is necessary to analyze which indicator light or lights are on, and which corresponding corresponding sensors or sensors are blocked. This allows the determination of which layer of cargo is too close to the upper layer, and the determination of how to move the corresponding layer. The dual-output reducer 1 rotates accordingly, moving the layer until the alarm signal disappears, at which point it stops rotating. This automatic control process involves a logical analysis process and may exceed the scope of protection of the utility model. The utility model does not require protection for this automatic control scheme. If an intelligent control system is subsequently introduced, this automatic control process can be written into the software of the intelligent control system. In addition, the location number and cargo information recorded on the location identification plate of each location can be input into the intelligent control system. The intelligent control system can display whether each location is occupied, making it easier to arrange for cargo to be stored in the designated location via AGV, and automatically control the height of the layer according to the cargo height. It can also track and process issues such as whether the stored cargo has been shipped out and whether it needs to be replenished, further improving storage efficiency. This shows that the storage shelf of the present invention can be easily transformed into an intelligent one and has good prospects for intelligent application.

[0036] The working process of the present invention is as follows: the dual-output reducer 1 controls the synchronous reverse rotation of the two transmission shafts 2, which is converted into synchronous reverse rotation of the forward and reverse ball screws 6 through the 90° right-angle steering gear 4. This causes the two forward screw nuts 7 to rise (or fall) synchronously on the two forward and reverse ball screws 6, driving the second layer 13 to move up (or down). At the same time, the two reverse screw nuts 8 to fall (or rise) synchronously on the two forward and reverse ball screws 6, driving the fourth layer 15 to move down (or up). The two forward screw nuts 7 always maintain synchronous and same-direction lifting and lowering, and the two reverse screw nuts 8 always maintain synchronous and same-direction lifting and lowering, which can ensure that the second layer 13 and the fourth layer 15 remain horizontal during the movement. The two forward screw nuts 7 and the two reverse screw nuts 8 always maintain synchronous and opposite-direction lifting and lowering, so that the second layer 13 and the fourth layer 15 always maintain opposite-direction lifting and lowering. Since the first layer 12, the third layer 14 and the top plate 16 are fixed on the side plate 11 and do not move up and down, the reverse displacement of the second layer 13 and the fourth layer 15 will cause the distance between the first layer 12 and the second layer 13, the distance between the second layer 13 and the third layer 14, the distance between the third layer 14 and the fourth layer 15, and the distance between the fourth layer 15 and the top plate 16 to change synchronously. When the second layer board 13 rises and the fourth layer board 15 descends, the distance between the first layer board 12 and the second layer board 13, and the distance between the fourth layer board 15 and the top plate 16 increase, and the distance between the second layer board 13 and the third layer board 14, and the distance between the third layer board 14 and the fourth layer board 15 decrease; when the second layer board 13 descends and the fourth layer board 15 rises, the distance between the first layer board 12 and the second layer board 13, and the distance between the fourth layer board 15 and the top plate 16 decrease, and the distance between the second layer board 13 and the third layer board 14, and the distance between the third layer board 14 and the fourth layer board 15 increase.

[0037] The above is a further detailed description of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical fields to which the present invention belongs and related technical fields, based on the technical solution ideas of the present invention, the expansion and replacement of operating methods and data should all fall within the scope of protection of the present invention.

Claims

1. A heavy-duty storage shelf with electrically adjustable layer height, characterized by: The invention comprises a lifting mechanism, a layer plate and a side plate (11); the side plates (11) are arranged in a group of two and are installed on the warehouse floor; the layer plate is arranged between a group of side plates, and the layer plates include, from bottom to top, a first layer plate (12), a second layer plate (13), a third layer plate (14), a fourth layer plate (15) and a top plate (16), wherein the ends of the top plate (16), the third layer plate (14) and the first layer plate (12) are fixedly connected to the top, the middle and the bottom of the two side plates (11) respectively; the lifting mechanism comprises a dual-output reducer (1), a transmission shaft (2), 90° right-angle steering gear (4), positive and negative tooth ball screw (6) and guide column (9); the dual-output reducer (1) and the 90° right-angle steering gear (4) are arranged on the ground below the first layer (12), the two output ends of the dual-output reducer (1) are respectively connected to one end of the two transmission shafts (2), and the other ends of the two transmission shafts (2) are respectively connected to the two 90° right-angle steering gears (4), and the two 90° right-angle steering gears (4) are installed at the center position of the inner side of the side plate (11); the bottom end of the positive and negative tooth ball screw (6) is connected to the 90° right-angle steering gear (4). The angle steering device (4) is connected, and the positive and negative thread ball screw (6) vertically passes through the first layer (12), the second layer (13), the third layer (14) and the fourth layer (15) from bottom to top, and its top end is fixed on the bearing seat (3) located at the bottom of the top plate (16), and the bearing seat (3) is fixed at the center position of the inner side of the side plate (11); the positive and negative thread ball screw (6) is provided with a positive thread screw nut (7) fixedly connected to the second layer (13) and a negative thread screw nut (8) fixedly connected to the fourth layer (15); the guide column (9) are provided with four guide posts, which respectively pass vertically through the four corners of the first layer (12), the second layer (13), the third layer (14) and the fourth layer (15). The top of the guide post (9) is fixedly connected to the top plate (16), and the bottom is fixed on the ground; the four corners of the second layer (13) and the fourth layer (15) are provided with guide sleeves (10), and the guide sleeves (10) are sleeved on the guide post (9) and slidably connected to the guide post (9); the side plate (11) is provided with a lifting switch (20) for controlling the forward and reverse rotation of the dual-output reducer (1).

2. The heavy-duty storage shelf with electrically adjustable floor height according to claim 1 is characterized in that: The invention also includes an alarm device (18) and 8 groups of beamforming sensors, wherein the alarm device (18) is electrically connected to the beamforming sensors, and the alarm device (18) is provided with 8 indicator lights (19) corresponding to the beamforming sensors, and is provided with a speaker; the 8 groups of beamforming sensors include two groups of first beamforming sensors (17), two groups of second beamforming sensors (24), two groups of third beamforming sensors (25) and two groups of fourth beamforming sensors (26) which are sequentially arranged below the top plate (16), the fourth layer plate (15), the third layer plate (14) and the second layer plate (13), and the two groups of beamforming sensors below the same layer plate are installed at the same height.

3. The heavy-duty storage shelf with electrically adjustable floor height according to claim 2 is characterized in that: The first counter-beam sensor (17) and the third counter-beam sensor (25) are mounted on the side panel (11) and are located at one-quarter and three-quarters of the width direction of the side panel (11), respectively; the second counter-beam sensor (24) and the fourth counter-beam sensor (26) are fixed to the lower sides of the fourth layer panel (15) and the second layer panel (13) through connecting members, respectively, and are located at one-quarter and three-quarters of the width direction of the fourth layer panel (15) and the second layer panel (13), respectively.

4. The heavy-duty storage shelf with electrically adjustable floor height according to claim 2 is characterized in that: The dual-output reducer (1) is electrically connected to the alarm device (18).

5. The heavy-duty storage shelf with electrically adjustable floor height according to any one of claims 1 to 3, characterized in that: The shelf is double-deep in width, with two storage locations in the width direction and n storage locations in the length direction. The entire shelf is provided with 10×n storage locations.

6. The heavy-duty storage shelf with electrically adjustable floor height according to claim 5 is characterized in that: The storage location is provided with a storage location identification plate (21), and the storage location identification plate (21) is arranged on both sides of the layer plate.

7. The heavy-duty storage shelf with electrically adjustable layer height according to any one of claims 1 to 3, characterized in that: The side panels (11) are fixed to the warehouse floor via a reinforced base (22).

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