A large-format flat panel hoist

Abstract

The utility model relates to flat plate transportation technical field discloses a kind of large-format flat plate lifting appliance, including transversely extending's hoist beam, several groups transversely spaced and set on hoist beam's hoist arm structure and the connecting plate being set in the middle of hoist beam top, connecting plate is isosceles triangle and its upper corner is provided with the lifting hole for being hung with lifting hook, hoist arm structure includes top lifting head, two respectively setting in top lifting head left and right sides' chain, and the free end of chain is connected with the clamping block, the cross section of clamping block is the card slot formed towards inside in the shape of Chinese character, the edge of flat plate is used for being clamped into the card slot of clamping block, and the down-pressing structure for being used to down-press flat plate is equipped on the clamping block.The present lifting appliance is clamped into the edge of flat plate by the card slot of clamping block, and cooperate down-pressing structure to down-press and fix flat plate, form the firm clamping fixed mode to ensure the stability and security in the process of flat plate hoisting, greatly reduce the risk of flat plate in the process of handling slide.

Description

Technical Field

[0001] This utility model relates to the field of flatbed transportation technology, and in particular to a large-format flatbed lifting device. Background Technology

[0002] In the manufacturing process of semi-trailer bodies, a large number of sheet metal components need to be assembled, and these components are usually obtained by cutting large-format flat panels using laser cutting machines. Therefore, the operation of moving large-format flat panels from the storage area to the laser cutting machine is crucial.

[0003] Currently, the commonly used flatbed handling spreaders in the industry have a relatively simple structure, mostly using simple hooks to directly hook onto the edge of the flatbed. These simple hooks are not effective at securing the flatbed; not only is the flatbed prone to swaying during lifting, affecting its stability and placement, but there is also a safety hazard of the flatbed slipping during transport, seriously threatening the safety of operators and the normal operation of equipment. With the semi-trailer manufacturing industry's ever-increasing demands for production efficiency, product quality, and safety, existing flatbed handling spreaders are no longer sufficient to meet actual production needs.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a large-format flatbed lifting device, which aims to improve the safety and stability of lifting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A large-format flat panel lifting device includes a laterally extending lifting beam, several sets of boom structures arranged laterally at intervals on the lifting beam, and a connecting plate located at the center of the top of the boom. The connecting plate is an isosceles triangle with a lifting hole at its upper corner for engaging with a hook. The boom structure includes a top lifting head, two chains respectively located on the left and right sides of the top lifting head, and clamps connected to the free ends of the chains. The clamps have a U-shaped cross-section forming an inwardly facing groove. The grooves of the clamps are used to engage the edge of the flat panel, and the clamps are provided with a pressing structure for pressing down on the flat panel.

[0008] As a further improvement to the above technical solution, the pressing structure includes at least one threaded hole opened on the top of the clamping block and communicating with the slot, and each threaded hole is connected to a hand screw, which is used to press the plate in the slot.

[0009] As a further improvement to the above technical solution, the hand-tightening screw is a Torx-head hand-tightening screw.

[0010] As a further improvement to the above technical solution, the pressing structure includes clamps disposed on the upper surface of the clamping block.

[0011] As a further improvement to the above technical solution, the clamp is a horizontal clamp.

[0012] As a further improvement to the above technical solution, the clamping block is provided with a vertical lug plate, which is connected to the chain.

[0013] As a further improvement to the above technical solution, the lifting beam is a C-shaped steel, and the top lifting head includes an I-beam plate that can be inserted into the inner groove of the C-shaped steel, and two buckles arranged on the top of the I-beam plate.

[0014] As a further improvement to the above technical solution, the I-beam plate is threaded with locking screws for pressing the lifting beam.

[0015] As a further improvement to the above technical solution, limiting plugs are provided at both ends of the lifting beam. The beneficial effects of this utility model are as follows: Compared with the prior art, this lifting device uses the slots of the clamping blocks to engage with the edge of the flat plate, and in conjunction with the pressing structure, presses down and fixes the flat plate, forming a robust clamping and fixing method. This structural design greatly enhances the fixing effect on the flat plate, effectively avoiding the problem of the flat plate's stability and placement being affected by swaying during lifting, ensuring the stability and accuracy of the flat plate during lifting. Furthermore, due to the dual fixing effect of the clamping blocks and the pressing structure, the risk of the flat plate slipping during handling is significantly reduced. This not only protects the personal safety of the operators but also avoids damage to the equipment caused by the flat plate slipping, ensuring the normal operation of the equipment and effectively reducing safety hazards and equipment maintenance costs during production. Attached Figure Description

[0016] Figure 1 A perspective view of the first large-format flat panel lifting device provided by this utility model.

[0017] Figure 2 for Figure 1 A three-dimensional diagram of the boom structure.

[0018] Figure 3 A perspective view of the second type of large-format flat panel lifting device provided by this utility model.

[0019] Figure 4 for Figure 3 A three-dimensional diagram of the boom structure.

[0020] Explanation of main component symbols: 1-Lifting beam, 2-Lifting arm structure, 21-Top lifting head, 211-I-beam plate, 212-Snap ring, 213-Locking screw, 22-Chain, 23-Clamping block, 231-Slot, 232-Vertical ear plate, 3-Connecting plate, 31-Lifting hole, 4-Pressing structure, 41-Hand-tightening screw, 42-Clamping clamp, 5-Flat plate, 6-Limiting plug. Detailed Implementation

[0021] This utility model provides a large-format flatbed lifting device. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0022] Please see Figures 1 to 4 This utility model provides a large-format flat panel lifting device, including a horizontally extending lifting beam, several sets of boom structures horizontally spaced on the lifting beam, and a connecting plate located at the top center of the boom. The connecting plate is an isosceles triangle with a lifting hole at its upper corner for engaging with a hook. The boom structure includes a top lifting head, two chains respectively located on the left and right sides of the top lifting head, and clamps connected to the free ends of the chains. The cross-section of the clamp is U-shaped, forming an inward-facing slot. The slot of the clamp is used to engage the edge of the flat panel, and the clamp is provided with a pressing structure for pressing down on the flat panel.

[0023] When using this large-format flat panel lifting device, the device is first connected to the external hook via the lifting holes on the connecting plate. Then, the slots of multiple clamping blocks are engaged with the edges of the large-format flat panel, ensuring the panel is surrounded by the blocks. Once the panel is engaged, the pressure-down structure activates, pressing down and securing the panel, further enhancing the stability of the connection between the panel and the clamping blocks. The lifting equipment then lifts the lifting device upwards via the hook, the lifting beams transmit the lifting force to each boom structure, the top lifting head bears the tension, and the two chains tighten, driving the clamping blocks upwards, thus lifting the large-format flat panel. During the lifting process, the clamping blocks and the pressure-down structure work together to maintain stable clamping of the panel, ensuring it does not sway or slip during transport.

[0024] Unlike existing simple hooks that directly hook onto the edge of a flat plate, this lifting device uses clamping blocks that engage with the edge of the plate, along with a downward pressing structure to firmly secure it. This design significantly enhances the stability of the plate, preventing swaying during lifting and ensuring its placement. Furthermore, the dual securing effect of the clamping blocks and the downward pressing structure greatly reduces the risk of the plate slipping during transport. This not only protects the safety of operators but also prevents damage to the equipment caused by slipping, ensuring normal equipment operation and effectively reducing safety hazards and maintenance costs during production.

[0025] See Figure 1 and Figure 2As shown, in the first embodiment, the pressing structure includes at least one threaded hole on the top of the clamping block and communicating with the slot. Each threaded hole is connected to a hand-tightening screw, which is used to press the plate in the slot. Operators can quickly adjust the pressure of the screw on the plate by hand by rotating the hand-tightening screw without the need for additional tools. During the hoisting preparation stage, the plate can be quickly fixed, significantly shortening the plate clamping time. After hoisting, the hand-tightening screw can be quickly loosened to achieve rapid disassembly of the plate, significantly improving the overall efficiency of the hoisting operation, reducing equipment downtime, and meeting the high-efficiency production needs of the semi-trailer manufacturing industry.

[0026] The hand-tightening screws are Torx-shaped screws. The unique Torx shape design increases the contact area and friction between the hand and the screw tip, allowing operators to apply force more easily and effortlessly when turning the screws. This is especially beneficial in hoisting operations where frequent adjustments to screw tightness are required, significantly improving operational convenience and comfort.

[0027] Of course, knurled hand screws, knob-type hand screws, and T-handle hand screws can also be used.

[0028] See Figure 3 and Figure 4 As shown, in another embodiment, the pressing structure includes clamps disposed on the upper surface of the clamping block. The clamps can secure and disassemble the flatbed in a very short time with just a simple opening and closing action. In semi-trailer production scenarios involving frequent lifting of large-format flatbeds, using clamps can significantly reduce the preparation and finishing time for lifting individual flatbeds, significantly improve overall production efficiency, and reduce equipment idle costs caused by time-consuming clamping.

[0029] Understandably, clamps typically employ lever principles or mechanical transmission structures to generate significant clamping force. During lifting, this strong clamping force ensures the plate is securely fixed within the clamp's slots, preventing displacement or slippage even in complex lifting environments, with significant shaking or unexpected impacts.

[0030] Specifically, the clamp is preferably a horizontal clamp. Horizontal clamps have a compact structure, do not occupy excessive space in the vertical direction when clamping a plate, avoid interference with the chain, and are suitable for lifting environments with limited space.

[0031] Preferably, the clamping block is provided with a vertical lug plate, which is connected to the chain. The vertical lug plate provides a dedicated connection point between the chain and the clamping block. Compared to directly welding the chain to the clamping block, the vertical lug plate can more evenly distribute the tension transmitted by the chain. When lifting large-format flat panels, the weight of the flat panel is transferred to the chain through the clamping block. The vertical lug plate effectively prevents excessive localized stress on the clamping block, ensuring a stable connection between the chain and the clamping block. This reduces the risk of the flat panel slipping due to loose connections during lifting, thus improving the overall safety and reliability of the lifting equipment.

[0032] Specifically, the lifting beam is made of C-shaped steel, which has good bending and torsional properties. When lifting large-format flatbeds, the C-shaped steel lifting beam can effectively distribute the stress generated by the weight of the flatbed, reduce the deformation of the lifting beam itself, ensure that the lifting equipment remains stable under heavy load conditions, improve the overall load-bearing capacity and safety of the lifting equipment, and meet the strength requirements for lifting large-format flatbeds in semi-trailer production.

[0033] The top lifting head includes an H-beam that can be inserted into the inner groove of a C-shaped steel beam, and two retaining rings arranged on the top of the H-beam, which are connected to a chain. This embedded connection method eliminates the need for complex installation tools and cumbersome installation steps, allowing operators to quickly install the top lifting head onto the lifting beam. Furthermore, the position of the top lifting head on the lifting beam can be flexibly adjusted according to the size of the flat plate and lifting requirements, enabling rapid adjustment of the boom structure spacing. This significantly improves the installation efficiency and operational flexibility of the lifting equipment, facilitating the lifting of flat plates of different specifications.

[0034] The I-beam is threaded with locking screws for pressing against the lifting beam. Operators can easily adjust the position of the top lifting head on the lifting beam by loosening or tightening the locking screws according to actual lifting needs. When lifting large-format flat panels of different sizes and weight distributions, the spacing and layout of the boom structure can be flexibly changed to achieve optimal force balance. Tightening the locking screws allows the I-beam to exert a continuous and strong compressive force on the lifting beam. This compressive force firmly fixes the I-beam and the lifting beam together, further eliminating the possibility of the top lifting head sliding laterally or moving longitudinally along the lifting beam during lifting, compared to a simple slotted connection method. Even if sudden vibrations, impacts, or inertial forces occur during the lifting of large-format flat panels, the locking screws ensure the top lifting head remains stable, guaranteeing the safety and reliability of the entire flat panel lifting process and effectively preventing safety accidents such as flat panel shaking or slippage caused by top lifting head displacement.

[0035] Furthermore, the lifting beam is equipped with limiting plugs at both ends. The presence of the limiting plugs creates a closed structure at both ends of the lifting beam, which can more evenly distribute stress when bearing loads. When lifting heavy flatbeds, the plugs at both ends can prevent the lifting beam from warping or deforming due to excessive local stress, ensuring the stability of the entire lifting device structure. This optimized load distribution can also reduce fatigue cracks caused by stress concentration and extend the service life of the lifting beam.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A large-format flatbed lifting device, characterized in that, The device includes a horizontally extending lifting beam, several sets of boom structures horizontally spaced on the lifting beam, and a connecting plate located at the top center of the boom. The connecting plate is an isosceles triangle with a lifting hole at its upper corner for engaging with a hook. The boom structure includes a top lifting head, two chains respectively located on the left and right sides of the top lifting head, and clamps connected to the free ends of the chains. The clamps have a U-shaped cross-section forming an inward-facing slot. The slots of the clamps are used to engage the edge of the flat plate, and the clamps are provided with a pressing structure for pressing down on the flat plate.

2. The large-format flatbed lifting device according to claim 1, characterized in that, The pressing structure includes at least one threaded hole on the top of the clamping block and communicating with the slot, each threaded hole being connected to a hand screw for pressing the plate in the slot.

3. The large-format flatbed lifting device according to claim 2, characterized in that, The hand-tightening screw is a Torx-tightening screw.

4. The large-format flatbed lifting device according to claim 1, characterized in that, The pressing structure includes clamps disposed on the upper surface of the clamping block.

5. The large-format flatbed lifting device according to claim 4, characterized in that, The clamp is a horizontal clamp.

6. The large-format flatbed lifting device according to claim 1, characterized in that, The clamping block is provided with a vertical lug plate, which is connected to the chain.

7. The large-format flatbed lifting device according to claim 1, characterized in that, The lifting beam is a C-shaped steel, and the top lifting head includes an I-beam that can be inserted into the inner groove of the C-shaped steel, and two buckles arranged on the top of the I-beam on the left and right.

8. The large-format flatbed lifting device according to claim 7, characterized in that, The I-beam is threaded with locking screws for pressing the lifting beam.

9. The large-format flatbed lifting device according to claim 7 or 8, characterized in that, Limiting plugs are provided at both ends of the lifting beam.

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