High-strength modular cantilever profile shelving

Abstract

A high-strength modular cantilever profile shelf, comprising a plurality of frame units, at least one set of cantilever assemblies, drive assemblies corresponding to the cantilever assemblies and reinforcing assemblies are arranged on the frame units; the cantilever assembly comprises two support pipes, an extension arm capable of extending or retracting from the support pipe is slidably arranged in the support pipe, the extension directions of the two extension arms are opposite, the surface of the extension arm is provided with a rack, and the length of the rack is the same as the length of the extension arm; the drive assembly comprises a spur gear cylinder gear corresponding to the rack and a drive shaft for driving the spur gear cylinder gear to rotate, the drive shaft drives the rack to move during the rotation of the spur gear cylinder gear, so that the extension arm extends or retracts from the support pipe. After the extension arm is moved to the appropriate position, self-locking can be realized without additional locking structure, the use effect of the extension arm is improved, and falling of goods is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cantilever profile racking technology, specifically a high-strength modular cantilever profile racking. Background Technology

[0002] In warehousing, cantilever racks are the mainstream choice for storing long, narrow goods. These racks primarily consist of uprights, cantilever beams, and a base. The uprights are vertically fixed to the base, while the cantilever beams extend horizontally from one or both sides of the uprights, forming a support structure to carry the goods. Their working principle involves pre-setting the length, spacing, and load-bearing capacity of the cantilever beams to match the specifications of the stored goods.

[0003] In practical applications, the cantilever beam length of cantilever profile racks is fixed during the manufacturing stage and cannot be flexibly adjusted according to the specifications of the goods. For goods with large size differences, racks with different cantilever beam lengths need to be configured separately. This results in warehouses needing to store cantilever profile racks of various specifications, increasing equipment procurement and storage costs.

[0004] Chinese patent document CN219515831U discloses a double-sided combined cantilever rack, including a base. The upper surface of the base has a mounting groove, within which a column is fixedly connected. The outer wall of the column has multiple evenly arranged first bolt holes, and three sets of symmetrical U-shaped sliders are slidably connected to both sides of the column. Second bolt holes of the same size as the first bolt holes are located at both ends of the multiple U-shaped sliders. This invention allows for flexible adjustment of the cantilever length according to the length of the materials, improving the storage efficiency of the cantilever rack.

[0005] However, the above solution has shortcomings, as it relies on a pin passing through a socket at the bottom of the forearm to achieve positioning. When the material is heavy, the contact point between the pin and the socket will generate great local stress, which can easily cause the pin to bend and deform or the edge of the socket to crack, thus leading to the risk of the forearm sliding and the material falling. If there is a slight lateral force on the material, such as the eccentric pressure when the material is stacked, the pin can easily come out of the socket, which can also lead to the risk of the forearm sliding and the material falling. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a high-strength modular cantilever profile rack that adapts to goods of different specifications while improving the effectiveness of the extension arm and preventing goods from falling.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a high-strength modular cantilever profile rack, including multiple frame units, and at least one set of cantilever components, drive components corresponding to the cantilever components, and reinforcement components are provided on the frame units; The cantilever assembly includes two support tubes, and an extension arm that can extend or retract from the support tubes is slidably disposed inside the support tubes. The two extension arms extend in opposite directions, and a rack is provided on the surface of the extension arm. The length of the rack is the same as the length of the extension arm. The drive assembly includes gears that mesh one-to-one with the rack and a drive shaft for driving the gears to rotate. During the rotation of the gears, the drive shaft drives the rack to move so that the extension arm can extend or retract from the support tube. The reinforcement assembly includes two first reinforcement rods and two second reinforcement rods. The two first reinforcement rods are distributed vertically and parallel to each other, and both ends of the first reinforcement rods are connected to the frame unit. The two second reinforcement rods intersect each other, and both ends of the second reinforcement rods are connected to the frame unit.

[0008] As a further optimization of the utility model of a high-strength modular cantilever profile rack: the cantilever profile rack includes a mounting frame placed parallel to the frame unit, the drive shaft rotates through the mounting frame, and the two ends of the drive shaft passing through the mounting frame are coaxially connected to a handle and a transmission shaft, respectively, and the gear is coaxially sleeved on the transmission shaft. During the process of the handle driving the drive shaft to rotate, the gear is driven to rotate through the transmission shaft.

[0009] As a further optimization of the utility model of a high-strength modular cantilever profile rack: at least one rotating shaft is rotatably provided on the mounting frame, and a sprocket is coaxially sleeved on one end of the rotating shaft passing through the mounting frame and on the drive shaft. The two sprockets cooperate to sleeve a chain, and the other end of the rotating shaft passing through the mounting frame is coaxially connected to the handle.

[0010] As a further optimization of the utility model of a high-strength modular cantilever profile rack: the rotating shaft is set to two, one rotating shaft is set below the uppermost drive shaft, and the other rotating shaft is set above the lowermost drive shaft.

[0011] As a further optimization of a high-strength modular cantilever profile rack of utility model: two opposing mounting plates are provided on the support tube, the drive shaft rotates through the mounting plates, and the gear is located between the two mounting plates.

[0012] As a further optimization of the utility model of a high-strength modular cantilever profile rack: the end of the extension arm extending out of the support tube is connected to a baffle, and the baffle extends upward.

[0013] As a further optimization of the utility model of a high-strength modular cantilever profile rack: the surface of the extension arm is rotatably provided with rollers, and the rollers are in contact with the inner wall of the support tube.

[0014] As a further optimization of the utility model of a high-strength modular cantilever profile rack: the frame unit is set to at least two, and the two frame units are connected by two first support rods and two second support rods, the two first support rods intersecting each other, and the two second support rods parallel to each other.

[0015] As a further optimization of the utility model of a high-strength modular cantilever profile rack: the bottom of the frame unit is provided with a base.

[0016] As a further optimization of the high-strength modular cantilever profile rack of the utility model: the drive shaft is coaxially connected to a connecting shaft, and the connecting shaft rotates through the mounting frame and connects to the handle.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1) In this invention, the extension arms on the same floor share the same transmission shaft and drive shaft, and the movement of all extension arms is achieved through gear and rack linkage. For a single extension arm to slide autonomously, the entire transmission chain, including all gears, racks, and transmission shafts on the same floor, must rotate synchronously. However, the meshing resistance of multiple gears in the transmission chain, the rotational inertia of the transmission, and the weight of other extension arms create significant reverse operating resistance. Even if a certain extension arm has a tendency to slide under the pressure of the cargo, it cannot overcome the resistance of the entire chain alone and therefore cannot move. No additional locking structure is needed to maintain a stable position.

[0018] 2) By driving the drive shaft to rotate, this utility model can realize the movement of all extension arms in the same extension direction in one layer, or even all extension arms in the same extension direction in two layers, thus saving adjustment efficiency. Attached Figure Description

[0019] Figure 1 This is the front view of this utility model; Figure 2 This is a magnified view of a portion of point A; Figure 3 This is a side view of the present invention; Figure 4 This is a top view of the present invention; The markings in the diagram are: 1. Frame unit, 2. First support rod, 3. Second support rod, 4. Drive shaft, 5. Handle, 6. Drive shaft, 7. Support tube, 8. First reinforcing rod, 9. Second reinforcing rod, 10. Fixing plate, 11. Rotating shaft, 12. Chain, 13. Base, 14. Sprocket, 15. Extension arm, 16. Mounting plate, 17. Rack, 18. Gear, 19. Baffle, 20. Roller, 21. Mounting bracket, 22. Connecting shaft. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art.

[0021] like Figures 1 to 4 As shown, a high-strength modular cantilever profile rack includes multiple frame units 1, each frame unit 1 being provided with at least one set of cantilever components, drive components corresponding to the cantilever components, and reinforcement components.

[0022] The cantilever assembly includes two support tubes 7, and an extension arm 15 that can extend or retract from the support tube 7 is slidably disposed inside the support tube 7. The two extension arms 15 extend in opposite directions. A rack 17 is disposed on the surface of the extension arm 15, and the length of the rack 17 is the same as the length of the extension arm 15. The drive assembly includes gears 18 that mesh with the racks 17 one by one, and a drive shaft 6 for driving the gears 18 to rotate. During the rotation of the gears 18, the drive shaft 6 drives the rack 17 to move, so that the extension arm 15 extends or retracts from the support tube 7.

[0023] When it is necessary to extend the extension arm 15 from the support tube 7 so that the support tube 7 and the extended extension arm 15 can jointly support the goods, the drive shaft 6 is rotated; during the rotation of the drive shaft 6, the gear 18 is driven to rotate; the rotation of the gear 18 in turn drives the rack 17 meshing with the gear 18 to move; since the rack 17 is set on the extension arm 15, when the rack 17 moves, the extension arm 15 will move synchronously until the extension length of the extension arm 15 meets the requirements; at this time, the drive shaft 6 is stopped from rotating.

[0024] When the extension arm 15 needs to be retracted into the support tube 7, the drive shaft 6 is rotated in the reverse direction. During the reverse rotation of the drive shaft 6, the gear 18 is driven to rotate in the reverse direction. The reverse rotation of the gear 18 in turn drives the rack 17 meshing with the gear 18 to move in the reverse direction. Since the rack 17 is set on the extension arm 15, when the rack 17 moves in the reverse direction, the extension arm 15 will move in the reverse direction synchronously until the extension arm 15 is retracted to the required distance. At this time, the reverse rotation of the drive shaft 6 is stopped.

[0025] Among them, gear 18 is set as a spur gear to ensure its meshing with rack 17.

[0026] To increase the cargo storage capacity, the cantilever assembly is configured with four groups, each group having the same distance between them. The number of gears 18, racks 17, and drive shafts 6 can be increased accordingly. Furthermore, depending on actual needs, the two support tubes 7 can be at the same height or have a certain height difference, as the two support tubes 7 are independently adjustable, and a certain height difference will not affect the performance of the extension arm 15.

[0027] To facilitate the rotation of the drive shaft 6, the cantilever profile rack includes a mounting frame 21 placed parallel to the frame unit 1. The drive shaft 6 rotates through the mounting frame 21, and the two ends of the drive shaft 6 passing through the mounting frame 21 are coaxially connected to a handle 5 and a transmission shaft 4, respectively. The gear 18 is coaxially sleeved on the transmission shaft 4. During the rotation of the drive shaft 6 by the handle 5, the gear 18 is rotated through the transmission shaft 4.

[0028] To further increase the storage capacity of goods and to simultaneously adjust the extension or retraction of the extension arm 15, such as Figure 1 As shown, eight frame units 1 can be installed. The number of cantilever assemblies on adjacent frame units 1 is the same, and the cantilever assemblies of each layer along the horizontal direction are on the same horizontal line. In this way, all gears 18 on the same horizontal line can share a drive shaft 4, and one end of the drive shaft 4 can be coaxially connected to the drive shaft 6; or multiple coaxially connected drive shafts 4 can be used, and the drive shaft 4 closest to the drive shaft 6 can be coaxially connected to the drive shaft 6. In this way, rotating one of the horizontal drive shafts 6 can rotate the drive shaft 4 coaxially connected to that drive shaft 6, and synchronously adjust the extension arm 15 that cooperates with it. The drive shaft 6 is coaxially connected to a connecting shaft 22, which rotates through the mounting bracket 21 and connects to the handle 5.

[0029] To ensure the installation effect of the drive shaft 4, two opposing mounting plates 16 are provided on the support tube 7. The drive shaft 4 rotates through the mounting plates 16, and the gear 18 is located between the two mounting plates 16.

[0030] Because the overall height of the shelf is relatively high in actual use, the drive shafts 6 located on the top and bottom layers are inconvenient for operators to rotate. Therefore, at least one rotating shaft 11 is rotatably mounted on the mounting frame 21. One end of the rotating shaft 11 passes through the mounting frame 21 and is coaxially fitted with a sprocket 14 on both the top and bottom layers of the drive shaft 6. The two sprockets 14 cooperate to fit a chain 12. The other end of the rotating shaft 11 passes through the mounting frame 21 and is coaxially connected to the handle 5. There are two rotating shafts 11, one of which is located below the top drive shaft 6, and the other is located above the bottom drive shaft 6.

[0031] When adjusting the top drive shaft 6, since the rotating shaft 11 is located below it, rotating the rotating shaft 11 will cause the sprocket 14 on it to rotate. The rotation of the sprocket 14 will then drive the chain 12 to rotate, which in turn will drive the sprocket 14 on the top drive shaft 6 to rotate, thus rotating the top drive shaft 6 itself. This reduces the height required for the operator to operate, making it easier for them. Conversely, the bottom drive shaft 6 requires the operator to crouch down. To save operator effort, the rotating shaft 11 can be positioned above the top drive shaft 6. The specific operation process will not be elaborated further.

[0032] Furthermore, the arrangement of sprockets 14 and chains 12 is not limited to the methods described above. They can be flexibly configured according to actual needs. For example, a sprocket 14 can also be installed on the central drive shaft 6, and it can be coupled with a sprocket 14 on another layer of drive shaft 6 via a chain 12. In this way, when one drive shaft 6 is rotated, the sprocket 14 and chain 12 will drive the other layer of drive shaft 6 to rotate accordingly, thus achieving the effect that rotating one drive shaft 6 allows both layers of extension arms 15 to extend synchronously.

[0033] The optimal choice for this application is to set up 8 frame units 1. After setting up each component according to the above description, the movement of all extension arms 15 in the same extension direction in one layer or even all extension arms 15 in the same extension direction in two layers can be realized by driving the drive shaft 6 to rotate, thus saving adjustment efficiency.

[0034] Furthermore, the movement of each extension arm 15 in this application requires the engagement of gears 18 and racks 17. Since the length of rack 17 is the same as the length of extension arm 15, self-locking is achieved without additional locking structures once the extension arm 15 has moved to the appropriate position. Specifically, extension arms 15 located on the same layer share the same drive shaft 4 and drive shaft 6, and the movement of all extension arms 15 is linked by gears 18 and racks 17. For a single extension arm 15 to slide autonomously, the entire transmission chain must be driven, including all gears 18, racks 17, and drive shafts 4 on the same layer, rotating synchronously. The meshing resistance of multiple gears 18 in the transmission chain, the rotational inertia of drive shaft 4, and the weight of other extension arms 15 create significant reverse operating resistance. Even if a particular extension arm 15 has a tendency to slide under the pressure of cargo, it cannot overcome the resistance of the entire chain alone and therefore cannot move, maintaining a stable position without the need for additional locking structures.

[0035] To prevent goods from falling off the extension arm 15 and to prevent the extension arm 15 from falling out of the support tube 7 during movement, a baffle 19 is connected to the end of the extension arm 15 that extends out of the support tube 7, and the baffle 19 extends upward.

[0036] To reduce friction between the extension arm 15 and the inside of the support tube 7 during movement, rollers 20 are rotatably mounted on the surface of the extension arm 15, and the rollers 20 contact the inner wall of the support tube 7. It should be noted that, in order to avoid mutual interference between the rollers 20 and the rack 17, the rollers 20 and the rack 17 are not on the same surface.

[0037] To enhance the strength of the frame unit 1 and ensure its support for the cargo, the reinforcement assembly includes two first reinforcement rods 8 and two second reinforcement rods 9. The two first reinforcement rods 8 are distributed vertically and parallel to each other, and both ends of the first reinforcement rods 8 are connected to the frame unit 1. The two second reinforcement rods 9 intersect each other, and both ends of the second reinforcement rods 9 are connected to the frame unit 1.

[0038] To facilitate the installation of reinforcement components, multiple fixing plates 10 are provided on the frame unit 1, so that the ends of the first reinforcement rod 8 and the second reinforcement rod 9 can be fixedly connected to the fixing plates 10.

[0039] The frame unit 1 is set to at least two, and the two frame units 1 are connected by two first support rods 2 and two second support rods 3. The two first support rods 2 intersect each other, and the two second support rods 3 are parallel to each other.

[0040] To ensure the stability of frame unit 1 when it is placed, a base 13 is provided at the bottom of frame unit 1.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-strength modular cantilever frame rack, comprising multiple frame units (1), characterized in that: The frame unit (1) is provided with at least one set of cantilever components, a drive component corresponding to each cantilever component, and a reinforcement component; The cantilever assembly includes two support tubes (7), and an extension arm (15) that can extend or retract from the support tube (7) is slidably disposed inside the support tube (7). The two extension arms (15) extend in opposite directions. A rack (17) is disposed on the surface of the extension arm (15), and the length of the rack (17) is the same as the length of the extension arm (15). The drive assembly includes gears (18) that mesh one-to-one with the rack (17) and a drive shaft (6) for driving the gears (18) to rotate. The drive shaft (6) drives the rack (17) to move during the rotation of the gears (18) so that the extension arm (15) extends or retracts from the support tube (7). The reinforcement component includes two first reinforcement rods (8) and two second reinforcement rods (9). The two first reinforcement rods (8) are distributed vertically and parallel to each other, and both ends of the first reinforcement rods (8) are connected to the frame unit (1). The two second reinforcement rods (9) intersect each other, and both ends of the second reinforcement rods (9) are connected to the frame unit (1).

2. The high-strength modular cantilever frame shelving as described in claim 1, characterized in that: The cantilevered profile rack includes a mounting frame (21) placed parallel to the frame unit (1). The drive shaft (6) rotates through the mounting frame (21), and the two ends of the drive shaft (6) passing through the mounting frame (21) are coaxially connected to a handle (5) and a transmission shaft (4), respectively. The gear (18) is coaxially sleeved on the transmission shaft (4). During the process of the handle (5) driving the drive shaft (6) to rotate, the gear (18) is driven to rotate through the transmission shaft (4).

3. The high-strength modular cantilever frame shelving as described in claim 2, characterized in that: At least one rotating shaft (11) is rotatably mounted on the mounting frame (21). One end of the rotating shaft (11) passes through the mounting frame (21) and is coaxially fitted with a sprocket (14) on the drive shaft (6). The two sprockets (14) cooperate to fit a chain (12). The other end of the rotating shaft (11) passes through the mounting frame (21) and is coaxially connected to the handle (5).

4. A high-strength modular cantilever frame shelving unit as described in claim 3, characterized in that: The rotating shaft (11) is configured as two, with one rotating shaft (11) located below the uppermost drive shaft (6) and the other rotating shaft (11) located above the lowermost drive shaft (6).

5. A high-strength modular cantilever frame shelving unit as described in claim 2, characterized in that: The support tube (7) is provided with two opposing mounting plates (16), the drive shaft (4) rotates through the mounting plates (16), and the gear (18) is located between the two mounting plates (16).

6. The high-strength modular cantilever frame shelving as described in claim 1, characterized in that: The end of the extension arm (15) extending out of the support tube (7) is connected to a baffle (19), and the baffle (19) extends upward.

7. A high-strength modular cantilever frame shelving as described in claim 1, characterized in that: The frame unit (1) is set to at least two, and two first support rods (2) and two second support rods (3) are connected between the two frame units (1). The two first support rods (2) intersect each other, and the two second support rods (3) are parallel to each other.

8. A high-strength modular cantilever frame shelving as described in claim 4, characterized in that: The drive shaft (6) is coaxially connected to a connecting shaft (22), which rotates through the mounting bracket (21) and connects to the handle (5).

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