A hoist for steam sand aerated concrete

Abstract

This utility model relates to the field of AAC (Aerated Concrete Acrylic Acid) handling equipment technology, and specifically discloses a hoisting device for steam-cured aerated concrete (AAC). This device addresses the problems of easy breakage, structural loosening, and poor specification compatibility associated with traditional devices. The device includes a pallet body, a buffer layer, uprights, limiting components, and a pressure plate. The upper surface of the pallet body has a buffer layer and a set of equidistant T-shaped slots. The lower end of the upright is locked in place by double threads and inserts, while the upper end has hooks. The pressure plate is fitted onto the upper end of the upright, and the four side plates have adjustable limiting posts with anti-slip discs to support the AAC product. This utility model achieves safe hoisting through modular assembly, double fixing, and collaborative protection: the EVA buffer layer absorbs impact, and the double threads and inserts ensure the stability of the uprights; the breakage rate of the AAC product is reduced, the compatibility is high, and maintenance costs are reduced, making it suitable for storage and construction hoisting scenarios of AAC blocks and panels.

Description

Technical Field

[0001] This utility model relates to the field of AAC handling equipment technology, and in particular to a hoisting device for steam sand aerated concrete. Background Technology

[0002] In the construction industry, AAC blocks and wall panels have obvious advantages: they are lightweight, heat-insulating, and soundproof. However, they are too "delicate"—their dry density is only a few hundred kilograms per cubic meter. If they are bumped or shaken even slightly, the edges will crumble and the surface is prone to cracking. Sometimes, after a batch of goods is hoisted down, the scrap rate can fill half a truck, which is a real headache.

[0003] The most frustrating thing is the existing lifting pallet. It's advertised as "specialized," but it's really just a regular wooden pallet with a thin rubber pad nailed on. The rubber pad is glued to the pallet, and it wears off quickly. Replacing it is difficult because the glue is so strong; you have to pry it off with a pry bar, which is a hassle. You also have to clean up the residual glue, and if it's stuck to the AAC surface, you have to redo the cleaning. Sometimes, if the lifting is too fast, the AAC falls onto the pallet and chip at the corners. Especially in summer, the finished products, after being steam-pressed, are still a bit damp, making them even more brittle, and the breakage rate skyrockets.

[0004] There's also the issue of size compatibility; building blocks come in sizes of 600×240×100, while wall panels come in sizes of 600×3000×100. The existing pallet baffles are fixed and their width cannot be adjusted.

[0005] The above-mentioned problems are real-world issues encountered during actual use and urgently need to be resolved. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a hoisting device for steam-aerated concrete (AAC), which solves the technical problems of traditional AAC hoisting devices, such as the easy damage of AAC finished products due to impact and slippage, the easy loosening of columns due to vibration, poor compatibility of AAC finished products of various specifications, and inconvenient maintenance of components such as buffer layers.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A hoisting device for steam sand aerated concrete includes a pallet body, a buffer layer on the upper surface of the pallet body, a set of equidistant T-shaped slots on the upper surface of the pallet body, and a set of equidistant T-shaped strips fixed on the bottom surface of the buffer layer. The pallet body and the buffer layer are connected by the T-shaped slots and T-shaped strips.

[0009] The pallet body is a modified PP plastic frame with a hollow bottom. The hollow bottom part of the pallet body is fixed with reinforcing ribs, and limit components are fixed at the four corners of the hollow bottom part of the pallet body.

[0010] The limiting component includes a base, with four bases fixed to the four corners of the hollowed-out bottom of the tray body.

[0011] Preferred: The surface of the buffer layer is pressed with a diamond-shaped anti-slip pattern to increase the friction with the finished AAC product;

[0012] The buffer layer has round holes at all four corners.

[0013] Preferably, threaded holes are provided at all four corners of the pallet body, and a column is provided in each threaded hole;

[0014] Each column has an annular groove at its lower end, and each column has a threaded surface at its lower end.

[0015] Preferably, each column has a hook for hanging at its upper end, and the lower ends of the four columns are threadedly connected to four threaded holes through threaded surfaces.

[0016] Preferably, each base has a threaded groove on its upper surface and two slots on its side.

[0017] Each base also has a threaded post fixed to its side.

[0018] Preferably, the threaded surfaces at the lower ends of the four columns are threadedly engaged with the four threaded grooves, and the annular grooves on the columns are aligned with the slots.

[0019] Preferred configuration: Two slots on the same base are each movably inserted with a plug, and a connecting plate is fixedly connected between the two plugs. The middle part of the connecting plate has a hole and a threaded post that are movably connected. A nut is threaded onto the threaded post, and the plug is inserted into the annular groove.

[0020] Preferred configuration: The upper ends of the four columns are movably fitted with pressure plates, and the four sides of the pressure plates are fixed with side plates. Each side plate is threaded with a limiting post with a turntable. The inner end of each limiting post is fixedly connected with an anti-slip disc. The aerated concrete component to be hoisted is placed on the upper surface of the buffer layer, and the four anti-slip discs respectively abut against the four sides of the aerated concrete component.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention constructs a dual protection system through an EVA buffer layer and a diamond-shaped anti-slip texture: the EVA material can absorb longitudinal impacts during lifting / lowering, preventing hard contact damage to the edges and corners of the brittle AAC finished product; the diamond-shaped texture on the surface can increase the slip coefficient between the AAC finished product and the buffer layer, reducing the breakage rate of the AAC finished product during lifting and improving the product qualification rate.

[0023] The uprights adopt a dual fixing structure of double threaded connection + plug-in locking: the lower end of the upright is simultaneously screwed into the threaded hole of the pallet body and the threaded groove of the base, and the mechanical locking of the plug-in inserted into the annular groove completely eliminates the loosening of the uprights caused by hoisting vibration; the four uprights are symmetrically distributed at the four corners of the pallet, and the four points are simultaneously stressed during hoisting, eliminating the risk of AAC finished product slippage or upright falling off, thus improving the safety of hoisting.

[0024] The pressure plate and the limiting post form an adjustable circumferential fixing structure: by rotating the limiting post with the turntable, the extension length of the anti-slip plate can be flexibly adjusted, and the fixing and switching of different specifications of finished products can be completed without replacing any parts, shortening the switching time; at the same time, the T-shaped snap-fit ​​buffer layer can be quickly removed and replaced, further reducing the equipment maintenance and specification adaptation costs.

[0025] The device adopts a modular assembly design: the T-shaped snap-fit ​​between the tray and the buffer layer and the threaded connection between the column and the tray do not require special tools and can be assembled by a single person. Attached Figure Description

[0026] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0027] Figure 1 This is an overall structural diagram of the present invention;

[0028] Figure 2 This is a structural diagram of the pressure plate of this utility model;

[0029] Figure 3 This is a structural diagram of the column in this utility model;

[0030] Figure 4 This is a structural diagram of the tray body and the buffer layer in this utility model;

[0031] Figure 5 This is a structural diagram of the base in this utility model;

[0032] Figure 6 This is a structural diagram of the threaded hole in this utility model;

[0033] Figure 7 This is a structural diagram of the slot in this utility model.

[0034] Legend: 1. Pallet body; 2. Buffer layer; 3. Aerated concrete component; 4. Upright; 5. Pressure plate; 6. Side plate; 7. Limiting post; 8. Annular groove; 9. Hook; 10. T-shaped slot; 11. Threaded hole; 12. Base; 13. Insert; 14. Connecting plate; 15. Nut; 16. Threaded groove; 17. Slot; 18. Threaded post. Detailed Implementation

[0035] This application provides a hoisting device for steam-aerated concrete (AAC), which effectively solves the technical problems of traditional steam-aerated concrete (AAC) hoisting devices, such as the easy damage of AAC finished products due to impact and slippage, the easy loosening of columns due to vibration, poor compatibility of AAC finished products of various specifications, and inconvenient maintenance of components such as buffer layers.

[0036] Example: Figure 1-7 As shown, the overall technical solution in this application embodiment is as follows:

[0037] To address the problems existing in the prior art, this utility model provides a hoisting device for steam-pressed aerated concrete (AAC). It aims to solve the problems of "easy breakage of finished products, poor adaptability, and easy loosening of components" in traditional hoisting equipment. The core structure is designed with a four-layer layout: "bearing layer - protective layer - stress-bearing layer - fixing layer," as detailed below:

[0038] Load-bearing layer: With the main body of the pallet 1 as the core, it bears the weight of the AAC finished product and all components. The hollow design at the bottom takes into account both weight reduction and the installation of reinforcing ribs.

[0039] Protective layer: Buffer layer 2 covers the upper surface of the pallet body 1, directly contacting the AAC finished product, to achieve impact absorption and anti-slip;

[0040] Load-bearing layer: 4 uprights are symmetrically distributed at the four corners of the pallet body 1. The upper hooks 9 are connected to the crane, and the lower end is locked by the limiting components to transmit the lifting force.

[0041] Fixed layer: The pressure plate 5 and the limiting column 7 form a circumferential fixed structure, which is sleeved on the outside of the column 4 to press and limit the AAC finished product and prevent it from shifting during hoisting.

[0042] The buffer layer 2 is fixed to the upper surface of the pallet body 1 by a T-shaped snap-fit; the upright 4 is connected to the pallet body 1 and the base 12 by a double thread and an insert 13; the pressure plate 5 is fitted on the upper end of the upright 4 and holds the AAC finished product by the limiting post 7; the base 12 is welded to the four hollowed-out corners of the bottom of the pallet body 1 to form the fixed base of the limiting component.

[0043] The pallet body 1 is made of modified PP (polypropylene) plastic with 20% glass fiber reinforcement (to improve impact resistance). The whole is made by injection molding. The upper surface has equidistant T-shaped grooves 10 along the length direction and threaded holes 11 at the four corners. The hole walls are knurled to improve the engagement strength with the threads of the uprights 4. Hot-dip galvanized steel reinforcing ribs are welded to the hollow area at the bottom. They are distributed along the length direction at the center line of the pallet and at 1 / 3 of both sides. The reinforcing ribs are welded to the pallet body 1.

[0044] The buffer layer 2 is made of 12mm thick EVA (ethylene-vinyl acetate copolymer), and its overall size matches that of the tray body 1. The bottom surface is integrally formed with a T-shaped card strip (compatible with the T-shaped card slot 10). The surface is pressed with a diamond-shaped anti-slip texture using a hot-pressing process. Round holes are opened at the four corners.

[0045] The upright 4 is made of 40Cr alloy structural steel, and the hook 9 is forged as a whole with the upright;

[0046] The lower end of column 4 is machined with external threads (to match threaded hole 11 and threaded groove 16).

[0047] An annular groove 8 is provided at the lower end of column 4;

[0048] The uprights 4 and hooks 9 are treated with heat treatment and chrome-plated for rust prevention.

[0049] A threaded groove 16 is formed on the upper surface of the base 12 (to match the thread at the lower end of the column 4); two slots 17 are formed on the side in the horizontal direction, and the slots 17 are aligned with the annular groove 8; a threaded column 18 is welded to the side.

[0050] Plug 13 has a galvanized surface for rust prevention.

[0051] A hole is made in the middle of the connecting plate 14 (with clearance fit with the threaded post 18).

[0052] Nut 15 comes with a spring washer to prevent it from loosening due to vibration during hoisting.

[0053] The pressure plate 5 is made of modified PP plastic, integrally injection molded, with holes at the four corners to fit the column 4 with a clearance, making it easy to insert.

[0054] Side plates 6 are welded to the four sides of pressure plate 5 (one on each side), and a threaded hole is opened in the center of side plate 6 to fit the limiting post 7.

[0055] The limit post 7 is machined with external threads, and a rubber anti-slip disc (made of nitrile rubber, with diamond-shaped patterns pressed on the surface of the anti-slip disc) is welded to the end. A plastic turntable is fitted to the other end for easy manual rotation and adjustment.

[0056] Working principle:

[0057] This hoisting device achieves safe hoisting of AAC finished products (blocks / panels) through modular assembly, double fixing, and coordinated protection:

[0058] Phase 1: Pre-assembly of the equipment (preparation before hoisting):

[0059] This stage completes the basic assembly of the pallet body 1, buffer layer 2, uprights 4, and limiting components, laying the foundation for the placement and fixation of AAC finished products;

[0060] The main body of the tray 1 is a modified PP plastic frame (with a hollow bottom for weight reduction), and its surface has a set of equidistant T-shaped slots 10. The T-shaped strips on the bottom of the buffer layer 2 (thick EVA material) are precisely aligned with the T-shaped slots 10 and pushed in horizontally to engage. The T-shaped convex and concave fit achieves initial fixation without screws, while reserving space for subsequent replacement (the buffer layer 2 can be pulled out and replaced after wear).

[0061] The diamond-shaped anti-slip texture on the surface of buffer layer 2 can increase the friction with the finished AAC product and prevent slippage when placing the finished product later; the round holes at the four corners of buffer layer 2 can help reduce weight and prevent water accumulation.

[0062] The lower ends (threaded surfaces) of the four uprights 4 are screwed into the threaded holes 11 at the four corners of the tray body 1 to achieve the initial threaded fixation of the uprights 4 and the tray.

[0063] The four corners of the hollowed-out bottom of the pallet body 1 have been fixed with the base 12. The threaded groove 16 on the upper surface of the base 12 is further screwed into the threaded surface at the lower end of the column 4, so that the column 4 forms a double threaded connection with the pallet body 1 and the base 12 at the same time, which improves the vertical load-bearing stability.

[0064] The annular groove 8 at the lower end of the column 4 is aligned with the slot 17 on the side of the base 12. Insert the plug 13 into the slot 17 of the base 12, with the end of the plug 13 extending into the annular groove 8 (locking the column 4). Then, put the connecting plate 14 (with a hole in the middle) onto the threaded column 18 on the side of the base 12 and tighten the nut 15. Through double fixing, the column 4 is completely prevented from loosening due to vibration during hoisting.

[0065] At this point, the hooks 9 at the top of the column 4 are positioned above the four corners of the pallet, forming four symmetrical lifting points, which provide force points for the subsequent crane hooks.

[0066] Phase 2: Placement and Fixing of Finished AAC Products

[0067] This stage uses pressure plate 5 and limiting post 7 to fix the AAC finished product circumferentially, adapting to different specifications of AAC (blocks / boards) and avoiding lateral displacement or collision of the finished product during hoisting.

[0068] Place the aerated concrete component 3 (such as 600×240×100mm blocks or 600×3000×100mm boards) to be hoisted steadily on the upper surface of the buffer layer 2. The EVA material of the buffer layer 2 can absorb minor impacts during placement, preventing damage to the edges and corners of the AAC finished product due to hard contact.

[0069] Insert the pressure plate 5 (with 4 holes in the middle) into the top of the column 4, so that the lower surface of the pressure plate 5 is in contact with the top of the AAC finished product; rotate the limit post 7 with turntable on the four side plates 6 of the pressure plate 5, and push the limit post 7 inward through the threaded drive until the anti-slip plate (rubber material) at the end of the limit post 7 is tightly against the four sides of the AAC finished product - the anti-slip plate increases the friction with the AAC finished product and avoids the rigid limit post from scratching the surface of the finished product;

[0070] Adjust the extension length of the limit post 7 according to the width / length of the AAC finished product to achieve "one device adapts to multiple specifications" without the need to replace the pressure plate 5 or the tray.

[0071] Phase 3:

[0072] The crane hook catches the hooks 9 on the top of the four columns and slowly lifts the pallet. Since the four hooks 9 are symmetrically distributed at the four corners of the pallet and the columns 4 are fixed to the pallet and the base 12 by double threads and plugs 13, the four lifting points are subjected to force simultaneously during lifting. The pallet body 1 remains horizontal, avoiding the pallet from tilting due to uneven force and causing the AAC finished product to slip.

[0073] The modified PP plastic frame of the pallet body 1 + bottom hot-dip galvanized steel reinforcing ribs: The reinforcing ribs are distributed along the load-bearing main beam, which can distribute the weight of the AAC finished product and prevent deformation of the hollow structure at the bottom of the pallet; the impact resistance of the modified PP material can resist the lateral force during hoisting and turning.

[0074] The diamond-shaped anti-slip texture on the surface of the buffer layer 2 increases the static friction with the AAC finished product. Even when the lifting direction is changed, the circumferential fixation of the pressure plate 5 and the limiting column 7 further restricts the lateral movement of the finished product, forming an anti-movement protection.

[0075] The side plate 6 of the pressure plate 5 and the limiting post 7 form a "frame protection" to prevent AAC finished products from being damaged by accidental collisions (such as touching the shelf).

[0076] Phase 4: Unloading and Device Reset

[0077] This stage involves unloading the AAC finished product and resetting the device for future use, balancing ease of operation with device durability.

[0078] The crane lifts the device to the target position and slowly lowers it to the ground; first, rotate the turntable of the limiting column 7 to make the anti-slip plate separate from the AAC finished product, and then lift the pressure plate 5 upward (remove it from the top of the column 4); finally, remove the AAC finished product from the buffer layer 2 manually or mechanically. If there is residual AAC dust on the surface of the buffer layer 2, it can be directly pulled out for cleaning or replacement.

[0079] If further hoisting is required, repeat the "Phase 2-Phase 3" process. If the equipment is to be left idle for an extended period, it can be disassembled as follows:

[0080] ① Loosen the nut 15 on the base, remove the connecting plate 14, and pull out the plug 13;

[0081] ② Rotate the column 4 so that it screws out of the threaded hole 11 of the tray body and the threaded groove 16 of the base;

[0082] ③ If the buffer layer is worn, remove it from the T-shaped slot 10 and replace it. The clean buffer layer 2 and the tray body 1 can be nested together.

[0083] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A hoisting device for steam-pressed aerated concrete, characterized in that, The pallet includes a pallet body (1), a buffer layer (2) is provided on the upper surface of the pallet body (1), a set of equidistant T-shaped slots (10) are provided on the upper surface of the pallet body (1), and a set of equidistant T-shaped strips are fixed on the bottom surface of the buffer layer (2). The pallet body (1) and the buffer layer (2) are connected by the T-shaped slots (10) and the T-shaped strips. Among them, the pallet body (1) is a modified PP plastic frame with a hollow bottom. The hollow bottom part of the pallet body (1) is fixed with reinforcing ribs, and the four corners of the hollow bottom of the pallet body (1) are fixed with limit components. The limiting component includes a base (12), and four bases (12) are fixed to the four corners of the bottom of the tray body (1).

2. The hoisting device for steam-pressed aerated concrete as described in claim 1, characterized in that, The surface of the buffer layer (2) is pressed with diamond-shaped anti-slip texture to increase the friction with the finished AAC product; The buffer layer (2) has round holes at all four corners.

3. The hoisting device for steam-pressed aerated concrete as described in claim 2, characterized in that, The pallet body (1) has threaded holes (11) at all four corners, and each threaded hole (11) has a column (4). Each column (4) has an annular groove (8) at its lower end, and each column (4) has a threaded surface at its lower end.

4. The hoisting device for steam-pressed aerated concrete as described in claim 3, characterized in that, Each column (4) has a hook (9) for hanging at the top, and the lower ends of the four columns (4) are threaded into four threaded holes (11) respectively through the threaded surface.

5. A hoisting device for steam-pressed aerated concrete as described in claim 4, characterized in that, Each base (12) has a threaded groove (16) on its upper surface and two slots (17) on its side. Each base (12) also has a threaded post (18) fixed to its side.

6. The hoisting device for steam-pressed aerated concrete as described in claim 5, characterized in that, The threaded surfaces at the lower ends of the four columns (4) are threaded into the four threaded grooves (16) respectively, and the annular groove (8) on the column (4) is aligned with the slot (17).

7. A hoisting device for steam-pressed aerated concrete as described in claim 6, characterized in that, Inserts (13) are movably inserted into the two slots (17) on the same base (12). A connecting plate (14) is fixedly connected between the two inserts (13). The middle part of the connecting plate (14) has a hole and a threaded post (18) that are movably connected. A nut (15) is threaded onto the threaded post (18). Inserts (13) are inserted into the annular groove (8).

8. A hoisting device for steam-pressed aerated concrete as described in claim 7, characterized in that, The upper ends of the four columns (4) are fitted with pressure plates (5), and the four sides of the pressure plates (5) are fixed with side plates (6). Each side plate (6) is threaded with a limiting post (7) with a turntable. Each limiting post (7) is fixedly connected to an anti-slip disc at its inner end. The aerated concrete component (3) to be hoisted is placed on the upper surface of the buffer layer (2), and the four anti-slip discs are respectively against the four sides of the aerated concrete component (3).

Images