A lifting device for lifting thin aluminum plates

Abstract

This utility model relates to the field of aluminum plate hoisting, and more particularly to a hoisting device for thin aluminum plates. It includes two symmetrically arranged hoisting units, each unit comprising a base, a flipping mechanism, and a clamping mechanism. The flipping mechanism is rotatably connected to the base and includes an adsorption component and a driving device. The adsorption component adsorbs the aluminum plate and, driven by the driving device, flips the aluminum plate from a horizontal to a vertical position. The clamping mechanism includes a lifting beam fixedly connected to the side of the base and a pair of clamping components extending vertically downwards along the lifting beam. The clamping components are slidably connected to the lifting beam, and the center line connecting the pairs of clamping components is coplanar with the surface of the vertically positioned aluminum plate. When the flipping mechanism flips the aluminum plate to a vertical position, the clamping components can adjust their spacing along the axial direction of the lifting beam to achieve surface contact clamping on both sides of the aluminum plate. This hoisting device effectively reduces central concave deformation during aluminum plate hoisting, improving hoisting safety.

Description

Technical Field

[0001] This utility model relates to the field of aluminum plate hoisting, and more particularly to a hoisting tool for thin aluminum plates. Background Technology

[0002] During the hoisting of aluminum sheets, especially thin aluminum sheets, the sheets themselves have poor rigidity and are prone to bending, wavy deformation, bulging, or denting under their own weight and hoisting force, particularly in the central area of ​​large thin sheets. Once plastic deformation occurs, repair is extremely difficult or even impossible, seriously affecting the subsequent installation quality and aesthetics.

[0003] In existing technologies, to reduce damage and deformation to the aluminum plate surface, vacuum suction cups or simple clamps are typically used for lifting. However, these technologies have the following problems:

[0004] First, in existing technologies, when using simple clamps for hoisting, the aluminum plate surface is in a horizontal position. In this state, the aluminum plate cannot effectively withstand the bending moment caused by its own weight in the thickness direction, making it prone to central deformation and denting. Alternatively, vacuum suction cups can be used for hoisting, but if the suction cup encounters an oily or uneven surface, the suction force will decrease, posing a risk of detachment. Furthermore, the suction cup tubing accompanying the hoisting device places high demands on the piping, resulting in significant costs. Second, when using simple clamps for hoisting, the clamps typically make single-point contact with the aluminum plate surface, easily scratching the coating. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a lifting device for lifting thin aluminum plates. The aluminum plates are first flipped over before being lifted. During the lifting process, the aluminum plates are arranged vertically, which effectively reduces the central depression deformation of the aluminum plates during lifting and improves the safety of lifting. Furthermore, by lifting two aluminum plates at once, not only is the center of gravity of the lifting stable, but the efficiency of lifting and transportation is also improved.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model proposes a lifting device for lifting thin aluminum plates, comprising two sets of lifting units arranged symmetrically, each set of lifting units comprising a base, a flipping mechanism and a clamping mechanism;

[0009] The flipping mechanism is rotatably connected to the base and includes an adsorption component and a driving device. The adsorption component is used to adsorb the aluminum plate and can flip the aluminum plate from a horizontal state to a vertical state under the drive of the driving device.

[0010] The clamping mechanism includes a lifting beam fixedly connected to the side of the base and a pair of clamping assemblies extending vertically downward along the lifting beam. The clamping assemblies are slidably connected to the lifting beam, and the center line connecting the pairs of clamping assemblies is coplanar with the surface of the vertical aluminum plate.

[0011] When the flipping mechanism flips the aluminum plate to a vertical position, the clamping assembly can adjust the spacing along the axial direction of the lifting beam to perform surface contact clamping on both sides of the aluminum plate.

[0012] A further technical solution is that the clamping assembly includes a clamping arm;

[0013] The clamping arm is slidably connected to the lifting beam and can reciprocate along the length of the lifting beam. A through groove is opened on the clamping arm, and a pair of clamping plates are provided inside the through groove. The clamping plates are connected to the clamping arm through a threaded adjustment structure, and the working surface of the clamping plates is covered with an anti-slip rubber layer.

[0014] A further technical solution is that the lifting beam is provided with a sliding groove along the length direction and multiple locking holes along the width direction;

[0015] The clamping arm is slidably disposed in the groove, and at least two connecting holes are provided on the top of the clamping arm. The clamping arm and the lifting beam are fixed and released by inserting and removing pins between the connecting holes and the locking holes.

[0016] A further technical solution is that the top of the clamping arm has a support block, the support block is located above the slide groove, and the width of the support block is greater than the width of the slide groove.

[0017] A further technical solution is that the adsorption assembly includes a frame, a drive shaft, and a vacuum suction cup;

[0018] The drive shaft is rotatably mounted on the bottom of the base via bearings, and both ends are fixedly connected to the frame. A drive worm gear is installed in the middle of the drive shaft.

[0019] The driving device includes a drive motor and a transmission worm gear located at the output end of the drive motor. The transmission worm gear is connected to the worm wheel. Vacuum suction cups are arranged in an array on both sides of the frame.

[0020] A further technical solution is that the bottom of the base is provided with symmetrical mounting flanges, each mounting flange is fixedly connected to a rotary damper by a bolt group, and the drive shaft passes through and is fixed to the rotation center hole of the rotary damper.

[0021] A further technical solution is that a proximity switch is fixed on the side of the base near the lifting beam. The proximity switch is electrically connected to the drive motor. By detecting the distance between the base and the frame, a trigger signal is triggered to cut off the drive of the drive motor after the aluminum plate is flipped into place.

[0022] A further technical solution is that the clamping assembly is connected to the lifting beam through a linear motion mechanism, which can be selected from either a screw and nut mechanism or a gear and rack mechanism.

[0023] (III) Beneficial Effects

[0024] The beneficial effects of this utility model are as follows: It integrates both flipping and clamping functions into the lifting device. First, the flipping mechanism flips the aluminum plate from a horizontal state to a vertical state, taking advantage of the aluminum plate's natural resistance to bending in a vertical posture, thus fundamentally avoiding the problem of central depression and deformation caused by traditional horizontal lifting. Second, the clamping mechanism adopts paired sliding surface contact clamping components, which can not only adapt to the clamping requirements of aluminum plates of different sizes, but also increase the contact area and disperse pressure through the clamping plates, effectively protecting the integrity of the aluminum plate surface coating. At the same time, the symmetrical double lifting unit structure can realize the synchronous lifting of two aluminum plates, which not only improves the stability of the center of gravity by balancing the load, but also significantly improves the transfer efficiency. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure of the lifting device for hoisting thin aluminum sheets;

[0026] Figure 2 for Figure 1 A schematic diagram of the overall structure of the lifting device in another state;

[0027] Figure 3 for Figure 2 A diagram showing the view from below;

[0028] Figure 4 for Figure 2 Front side view diagram;

[0029] Figure 5 This is a schematic diagram of the clamping arm.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1: Base; 2: Tilting mechanism; 21: Adsorption assembly; 211: Frame; 212: Drive shaft; 213: Vacuum suction cup; 22: Drive device; 221: Drive motor; 222: Transmission worm gear; 3: Clamping mechanism; 31: Lifting beam; 311: Locking hole; 312: Slide groove; 32: Clamping assembly; 321: Clamping arm; 3211: Connecting hole; 3212: Support block; 3213: Through groove; 322: Clamping plate; 4: Threaded adjustment structure; 5: Transmission worm gear. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] This embodiment provides a lifting tool for hoisting thin aluminum plates, such as... Figures 1-5 As shown, the system includes two symmetrically arranged hoisting units. Each hoisting unit includes a base 1, a flipping mechanism 2, and a clamping mechanism 3. The flipping mechanism 2 is rotatably connected to the base 1 and includes an adsorption component 21 and a driving device 22. The adsorption component 21 is used to adsorb aluminum plates and can flip the aluminum plates from a horizontal state to a vertical state under the drive of the driving device 22. The clamping mechanism 3 includes a lifting beam 31 fixedly connected to the side of the base 1 and a pair of clamping components 32 extending vertically downward along the lifting beam 31. The clamping components 32 are slidably connected to the lifting beam 31, and the center line connecting the pairs of clamping components 32 is coplanar with the surface of the vertically positioned aluminum plate. When the flipping mechanism 2 flips the aluminum plate to a vertical state, the clamping components 32 can adaptively adjust their spacing along the axial direction of the lifting beam 31 to perform surface contact clamping on both sides of the aluminum plate.

[0034] The two sets of lifting units described above are connected by welding H-beams, and the distance between the two lifting units is determined by the distance between the H-beams. Alternatively, in another embodiment, the H-beams can be replaced with a transverse mechanism, which allows for adjustable distance between the two aluminum plates being lifted simultaneously, improving versatility. The base 1 has a U-shaped structure with an opening at the bottom, forming a hinged connection with the flipping mechanism 2. The adsorption component 21 rotates around the hinge center. The driving device 22 provides power for the rotation of the adsorption component 21. In this example, the driving device 22 is fixed to the middle of the U-shaped opening of the base 1 by a mounting plate, and the mounting plate and the base 1 are connected by welding. This example uses a drive motor 221 in conjunction with a worm gear transmission mechanism. In another embodiment, a hydraulic cylinder in conjunction with a connecting rod transmission mechanism or a motor in conjunction with a rack and pinion transmission mechanism can be selected. The adsorption component 21 adsorbs the aluminum plate through vacuum adsorption. It should be noted that the lifting device integrates a vacuum negative pressure interface. When the lifting device is working in the lifting and unloading phases, the negative pressure source needs to be connected to the interface on the lifting device. The flipping mechanism 2 also works in the lifting and unloading phases. During the lifting and transfer process, the vacuum adsorption effect will be disconnected, but at this time the clamping mechanism 3 has already achieved a firm lock on the vertical aluminum plate.

[0035] The aforementioned lifting device integrates both flipping and clamping functions. First, the flipping mechanism 2 flips the aluminum plate from a horizontal to a vertical position, utilizing the aluminum plate's natural resistance to bending in a vertical orientation to fundamentally avoid the central concavity deformation problem caused by traditional horizontal lifting. Second, the clamping mechanism 3 employs paired sliding surface-contact clamping components 32, which can adapt to the clamping requirements of aluminum plates of different sizes and increase the contact area through strip-shaped clamps to distribute pressure, effectively protecting the integrity of the aluminum plate's surface coating. Simultaneously, the symmetrical double-lifting unit structure enables the synchronous lifting of two aluminum plates, improving the stability of the center of gravity by balancing the load and significantly increasing transfer efficiency.

[0036] In this embodiment, the clamping assembly 32 includes a clamping arm 321. The clamping arm 321 is slidably connected to the lifting beam 31 and can reciprocate along the length of the lifting beam 31. Figure 4 and Figure 5 As shown, a through groove 3213 is formed on the clamping arm 321. A pair of clamping plates 322 are arranged inside the through groove 3213. The clamping plates 322 are connected to the lifting beam 31 via a threaded adjustment structure 4, and the working surface of the clamping plates 322 is covered with an anti-slip rubber layer. Specifically, the clamping arm 321 is slidably connected to the lifting beam 31, achieving flexible positioning along the length of the lifting beam 31. The pair of clamping plates 322, in conjunction with the threaded adjustment structure 4, can accurately adapt to clamping thin aluminum plates of different thicknesses. The anti-slip rubber layer increases the coefficient of friction to prevent slippage and protects the integrity of the workpiece surface. The threaded adjustment structure 4 includes a screw, one end of which is rotatably connected to the clamping plate 322, and the other end is fixed to a rotating head. A thread is provided in the middle, which forms a threaded connection with a threaded hole on the side of the clamping arm 321.

[0037] Furthermore, in this embodiment, the vertical length of the clamping plate 322 is greater than the width of the aluminum plate being clamped. This ensures that the clamping plate 322 and the aluminum plate are in face-to-face contact. Compared with traditional small-area or single-point clamping fixtures, this method causes less damage to the surface of the aluminum plate. In particular, when combined with a rubber layer, it can maximize the protection of the coating on the surface of the aluminum plate from damage.

[0038] In this embodiment, the lifting beam 31 is provided with a slide groove 312 along its length and multiple locking holes 311 along its width. The clamping arm 321 is slidably disposed within the slide groove 312. At least two connecting holes 3211 are provided on the top of the clamping arm 321. The connecting holes 3211 and the locking holes 311 are connected by inserting and removing pins to fix and release the clamping arm 321 and the lifting beam 31. Furthermore, the top of the clamping arm 321 has a support block 3212, located above the slide groove 312, and the width of the support block 3212 is greater than the width of the slide groove 312. Specifically, the combination of the slide groove 312 and multiple locking holes 311 achieves rapid positioning and rigid locking of the clamping arm 321. The insert-and-remove pin connection method ensures assembly stability and facilitates adjustment. The wide-body design of the support block 3212 effectively disperses load stress and prevents deformation of the edges of the slide groove 312.

[0039] In this embodiment, the adsorption assembly 21 includes a frame 211, a drive shaft 212, and vacuum suction cups 213. Specifically, the drive shaft 212 is rotatably mounted on the bottom of the base 1 via bearings, and both ends are fixedly connected to the frame 211. A drive worm gear 5 is installed in the middle of the drive shaft 212. The drive device 22 includes a drive motor 221 and a drive worm 222 located at the output end of the drive motor 221. The drive worm 222 and the drive worm gear form a transmission connection. Vacuum suction cups 213 are arrayed on both sides of the frame 211. The adsorption assembly 21 uses a worm gear transmission system to achieve angle adjustment. The self-locking characteristic of the worm gear allows the frame 211 to be stably suspended at any position. The symmetrically distributed suction cup structure on both sides of the frame 211 ensures a uniform distribution of adsorption force. The entire system achieves reliable positioning control while maintaining flexible gripping capability through the synergistic effect of mechanical transmission and vacuum adsorption. The bearing-supported drive shaft 212 ensures the smooth rotation of the frame 211.

[0040] Optionally, the base 1 has symmetrical mounting flanges at its bottom, each flange being fixedly connected to a rotary damper via bolts. The drive shaft 212 passes through and is fixed to the rotation center hole of the rotary damper. In this structure, the dual damper configuration effectively suppresses the inertial swaying of the frame 211 during rotation, reducing the impact of the aluminum plate on the base 1 and bearings during rotation. Simultaneously, the rotary damper's detachable fixed connection via flanges and bolts facilitates the alignment of the center of the rotary damper with the center of gravity of the drive shaft 212, making adjustment and replacement easier. The damping torque enables the tilting mechanism 2 to achieve smoother start-stop control, significantly improving equipment safety.

[0041] Furthermore, in this embodiment, a proximity switch is fixed on the side of the base 1 near the lifting beam 31. The proximity switch is electrically connected to the drive motor 221. By detecting the distance between the base 1 and the frame 211, a trigger signal is triggered to cut off the drive of the drive motor 221 after the aluminum plate has been flipped into place. The linkage control between the proximity switch and the drive motor 221 achieves precise positioning of the aluminum plate flipping. Excessive flipping of the aluminum plate may cause it to impact the base 1. To enhance safety, the proximity switch is fixed to the side of the base 1 by a bracket. At the same time, mechanical limit blocks are set around the bracket to further mechanically limit the flipping of the aluminum plate and enhance reliability.

[0042] In another embodiment, the clamping assembly 32 is connected to the lifting beam 31 via a linear motion mechanism, which can be selected from either a screw and nut mechanism or a rack and pinion mechanism. This allows for more effortless operation of the clamping motion of the clamping assembly 32, reducing the labor intensity of the worker.

[0043] The specific working steps of the lifting device used for lifting thin aluminum plates in this embodiment are as follows:

[0044] First, place the lifting device above two parallel stacked aluminum plates and connect a nearby vacuum negative pressure source to the interface of the vacuum adsorption component 21 on the lifting device. Then, lower the lifting device onto the upper surface of the aluminum plates, achieving vacuum adsorption through negative pressure. Once the thin aluminum plates are adsorbed, start the drive motor 221, ensuring that the drive motors 221 of both lifting units start synchronously. Manually control the output of the drive motors 221 to cause the two thin aluminum plates to flip synchronously until they are vertical and then stop. Next, manually operate the clamping arm 321 to move towards the aluminum plate until the paired clamping plates 322 clamp the thin aluminum plate. Then, simultaneously insert pins into the locking holes 311 on the lifting beam 31 and the connecting holes 3211 on the clamping arm 321 to lock them in place. Next, use the threaded adjustment structure 4 to tighten the paired clamping plates 322 until they clamp the thin aluminum plate securely. Finally, disconnect the vacuum negative pressure source from the adsorption component 21 and proceed with the vertical lifting of the thin aluminum plate. When unloading the aluminum plate, a negative pressure source near the unloading point should be connected first to adsorb the aluminum plate before releasing the clamping mechanism 3. This will maximize the protection of the aluminum plate's surface.

[0045] It should be noted that all directional indicators in this embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0046] Furthermore, in this embodiment, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0048] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A sling for hoisting thin aluminum sheets, characterized in that, It includes two sets of symmetrically arranged hoisting units, each set of hoisting units including a base (1), a flipping mechanism (2) and a clamping mechanism (3); The flipping mechanism (2) is rotatably connected to the base (1) and includes an adsorption component (21) and a driving device (22). The adsorption component (21) is used to adsorb aluminum plates and can flip the aluminum plates from a horizontal state to a vertical state under the drive of the driving device (22). The clamping mechanism (3) includes a lifting beam (31) fixedly connected to the side of the base (1) and a pair of clamping components (32) extending vertically downward along the lifting beam (31). The clamping components (32) are slidably connected to the lifting beam (31), and the center line of the pair of clamping components (32) is coplanar with the surface of the vertical aluminum plate. When the flipping mechanism (2) flips the aluminum plate to a vertical state, the clamping assembly (32) can adjust the spacing along the axial direction of the lifting beam (31) to perform surface contact clamping on both sides of the aluminum plate.

2. The lifting tool for lifting thin aluminum sheets according to claim 1, wherein The clamping assembly (32) includes a clamping arm (321); The clamping arm (321) is slidably connected to the lifting beam (31) and can reciprocate along the length of the lifting beam (31). A through groove (3213) is provided on the clamping arm (321), and a pair of clamping plates (322) are provided inside the through groove (3213). The clamping plates (322) are connected to the clamping arm (321) through a threaded adjustment structure (4), and the working surface of the clamping plates (322) is covered with an anti-slip rubber layer.

3. The lifting device for lifting thin aluminum plates as described in claim 2, characterized in that, The lifting beam (31) is provided with a sliding groove (312) along the length direction and a plurality of locking holes (311) along the width direction; The clamping arm (321) is slidably disposed in the slide groove (312). At least two connecting holes (3211) are provided on the top of the clamping arm (321). The clamping arm (3211) and the locking hole (311) are fixed and released by inserting and removing pins.

4. The lifting tool for lifting thin aluminum sheets according to claim 3, wherein The clamping arm (321) has a support block (3212) at its top, which is located above the slide groove (312), and the width of the support block (3212) is greater than the width of the slide groove (312).

5. The lifting tool for lifting thin aluminum sheets according to claim 1, wherein The adsorption assembly (21) includes a frame (211), a drive shaft (212), and a vacuum suction cup (213); The drive shaft (212) is rotatably mounted on the bottom of the base (1) via bearings, and both ends are fixedly connected to the frame (211). A drive worm gear (5) is installed in the middle of the drive shaft (212). The drive device (22) includes a drive motor (221) and a transmission worm (222) located at the output end of the drive motor (221). The transmission worm (222) is connected to the worm wheel (5) in a transmission connection. The vacuum suction cups (213) are arranged in an array on both sides of the frame (211).

6. The lifting tool for lifting thin aluminum sheets according to claim 5, wherein The bottom of the base (1) is provided with symmetrical mounting flanges, each mounting flange is fixedly connected with a rotary damper through a bolt set, and the transmission shaft (212) penetrates through the rotary center hole fixed to the rotary damper.

7. The lifting tool for lifting thin aluminum sheets according to claim 5, wherein The base (1) is fixed with a proximity switch on the side close to the hanging beam (31), the proximity switch is electrically connected with the driving motor (221), and the distance between the base (1) and the frame (211) is detected to ensure that the aluminum plate is turned to the position, and a signal is triggered to cut off the driving of the driving motor (221).

8. The lifting device for lifting thin aluminum sheets according to claim 1, wherein The clamping assembly (32) is connected with the hanging beam (31) through a linear motion mechanism, and the linear motion mechanism can be selected from any one of a lead screw nut mechanism and a gear and rack mechanism.

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