A large-capacity low-cost ceramic large plate export to the to dress cabinet method

Abstract

This invention discloses a high-capacity, low-cost method for palletizing and loading large ceramic slabs for export, comprising the following steps: S1, Material preparation: Prepare an H-shaped packaging frame, lifting straps, and a U-shaped crane arm; S2, Palletizing: Thread the lifting straps across the H-shaped packaging frame, then lift the large ceramic slab between the two uprights of the H-shaped packaging frame, centering the slab within the frame. Tighten the top fasteners of the H-shaped packaging frame, and wrap the lifting straps around the ceramic slab, ready for lifting; S3, Installing the U-shaped crane arm: Hook the lifting rings at both ends of the U-shaped crane arm onto the lifting rings of a gantry crane. Control the horizontal and vertical positions of the U-shaped crane arm using the gantry crane to move it above the ceramic slab; S4, Loading: Hook the lifting straps from step S2 onto the hook assembly of the U-shaped crane arm; Use the gantry crane to load multiple palletized ceramic slabs into the container in a specific order. This palletizing and loading method features high safety, high load capacity, and low cost.

Description

Technical Field

[0001] This invention relates to a container loading and transportation technology for large ceramic slabs, and more particularly to a method for palletizing and loading large-capacity, low-cost ceramic slabs for export. Background Technology

[0002] Because ceramic tiles are fragile, they need to be palletized and packaged after production for easy transportation. Previously, ceramic products were small in size, limiting their development and primarily suitable for floors and walls in small spaces. Large ceramic slabs, on the other hand, are made from clay, minerals, and other inorganic non-metallic materials, produced through molding and high-temperature firing at 1200℃, with an area of ​​no less than 1.62m². 2 Large ceramic slabs are mainly used for wall and floor decoration in architectural spaces, furniture decoration such as wardrobe panels and cabinet panels, as well as door panels. Due to their better processing performance, more natural textures, high temperature resistance, acid and alkali resistance, durability, and ease of cleaning, they are widely welcomed.

[0003] However, how to safely, with minimal damage and at a controllable cost, palletize, pack, and transport large quantities of ceramic tile slabs to the sales or construction sites remains a significant challenge, especially for these large, easily broken, and scratched slabs. Currently, most companies primarily use two methods for palletizing and packing large ceramic tile slabs. The first method is using A-frame palletizing and packing. A-frame palletizing and packing is made of metal and includes a base frame and an A-shaped inclined frame positioned in the middle of the base frame. Figure 1 As shown, the large ceramic slabs are manually placed on both sides of the A-frame inclined rack, then secured with wrapped plastic straps. Finally, using a crane and a 10-ton forklift, the ceramic slabs and the A-frame support are transferred into the shipping container, completing the loading process for transport. The second method involves using protective wooden crates for wrapping, such as... Figure 2 As shown, the stacked ceramic slabs are first wrapped with plastic straps, then protective wooden crates are wrapped around both ends of the stacked ceramic slabs, and the four corners of the ceramic slabs are protected. Then, they are secured with wrapped plastic straps. Finally, using a crane and a 10-ton motorized forklift, the ceramic slabs and protective wooden crates are transferred into the container to complete the loading of the materials into the container for transportation.

[0004] Taking the loading of 1600×3200×12mm ceramic tile slabs into a 20-foot container as an example, this illustrates that the two different palletizing and loading methods result in different container loading capacities and costs. Using A-frame palletizing, one A-frame can hold approximately 24 ceramic slabs, and three A-frames can be used in one container, resulting in a loading capacity of only 72 slabs in a 20-foot container—a low capacity. Furthermore, A-frames are considered auxiliary transport materials, and the cost per ceramic slab is approximately 10 yuan, making auxiliary material costs high. Additionally, cranes and forklifts need to be rented separately, leading to high rental costs, and loading time is unpredictable. Using palletized protective wooden crates, two crates can hold approximately 26 ceramic slabs. One container can hold four sets of palletized protective crates, and a 20-foot container can hold 104 slabs, which is an increase in loading capacity. The protective wooden crates are used as auxiliary materials for transportation. After deducting the cost of auxiliary materials, the transportation cost per ceramic slab is about 4 yuan. The auxiliary material cost is reduced, but because the middle of the stacked ceramic slabs is not reinforced, the bumps during transportation may cause the middle of the ceramic slabs to break, resulting in lower safety during ceramic transportation. Similarly, cranes and motorized forklifts need to be rented separately, which is costly and the loading time is unpredictable.

[0005] Therefore, there is an urgent need to find a palletizing and container loading method that is highly secure, has a high load capacity, and is low in cost, and that can solve the problem of how to safely, with low damage and controllable cost, palletize and pack large quantities of ceramic slabs and quickly load them into containers. Summary of the Invention

[0006] In order to overcome the shortcomings of the existing technology, the purpose of this invention is to provide a method for palletizing and loading large-capacity, low-cost ceramic slabs for export.

[0007] The objective of this invention is achieved through the following technical solution: a method for palletizing and loading large-capacity, low-cost ceramic slabs for export, comprising the following steps:

[0008] S1. Material preparation: Prepare H-shaped packaging racks for palletizing and packaging large ceramic slabs, lifting straps for binding large ceramic slabs, and U-shaped cranes for transferring large ceramic slabs into the container.

[0009] S2, Pallet Packaging: Thread two slings across the H-shaped packaging frame, then hoist the prepared ceramic slab between the two uprights of the H-shaped packaging frame, centered inside the H-shaped packaging frame. Tighten the top fasteners of the H-shaped packaging frame, wrap the slings around the ceramic slab, and wait for hoisting.

[0010] S3. Install the U-shaped boom: Hang the lifting rings at both ends of the U-shaped boom on the lifting rings of the gantry crane, and control the horizontal and vertical positions of the U-shaped boom through the gantry crane to move it above the ceramic slabs that have been palletized and packaged.

[0011] S4. Container loading: Hang the slings from step S2 onto the hook assembly of the U-shaped boom; use the gantry crane to control the horizontal and vertical positions of the U-shaped boom again, and load multiple palletized ceramic slabs into the container in a certain order.

[0012] Furthermore, the specific process of loading containers at S4 is as follows:

[0013] Install the first H-shaped packing frame: Extend the U-shaped boom into the container and place the first H-shaped packing frame at the innermost side of the container. Lower the U-shaped boom and, before loosening the slings, use two wooden beams to diagonally brace the other side of the container to prevent the first H-shaped packing frame from falling over. Then, use wire to tie the upright of the H-shaped packing frame closest to the innermost side to the hook on the side of the container to secure the first H-shaped packing frame. Finally, remove the two wooden beams used for diagonal bracing.

[0014] Install the second H-shaped packing frame: Extend the U-shaped boom into the container again, place the second H-shaped packing frame into the container away from the innermost side of the first H-shaped packing frame, lower the U-shaped boom, and before the slings are loosened, use two wooden beams to diagonally brace the uprights of the first H-shaped packing frame to prevent the second H-shaped packing frame from falling over; then use wire to tie the uprights of the second H-shaped packing frame closest to the innermost side to the hooks on the side of the container to secure the second H-shaped packing frame, and then remove the two wooden beams used for diagonal bracing;

[0015] Install the third and fourth H-shaped packing racks: The third and fourth H-shaped packing racks are placed between the first and second H-shaped packing racks. The loading operation for the third H-shaped packing rack is the same as that for the first two H-shaped packing racks; however, the fixing method for adjacent H-shaped packing racks is different. When fixing, there should be a 25-30cm gap between the two uprights of the H-shaped packing rack and the two uprights of the adjacent H-shaped packing rack. Two wooden strips, 35-40cm long, are used for fixing. At the same time, the wooden strips are tied to the uprights with wire to achieve fixation. This completes the overall loading of the first row of H-shaped packing racks in the container.

[0016] Install the fifth and sixth H-shaped packing racks: The U-shaped boom extends into the container again, hoisting the fifth and sixth H-shaped packing racks onto the outer sides of the container. Utilizing the space between the first row of H-shaped packing racks, partially push the fifth H-shaped packing rack into the gap between the first and second H-shaped packing racks. Secure the fifth H-shaped packing rack to the container side using a long wooden beam and two short wooden strips within the space between the fifth H-shaped packing rack and the container side. Then, partially push the sixth H-shaped packing rack into the gap between the third and fourth H-shaped packing racks. Secure the sixth H-shaped packing rack to the other side of the container using a long wooden beam and two short wooden strips within the space between the sixth H-shaped packing rack and the other side of the container.

[0017] Install the seventh H-shaped packing rack: The U-shaped boom extends into the container again, hoisting the seventh H-shaped packing rack between the fifth and sixth H-shaped packing racks. Making full use of the gap space between the first row of H-shaped packing racks, partially push the fifth H-shaped packing rack into the gap between the third and fourth H-shaped packing racks. Similarly, the seventh H-shaped packing rack is fixed between the fifth and sixth H-shaped packing racks by a long wooden beam and two short wooden strips, respectively. This completes the overall loading of the second row of H-shaped packing racks in the container.

[0018] Furthermore, after installing the first row of H-shaped packaging racks, use a long wooden strip to connect the tops of the four H-shaped packaging racks and nail them in place.

[0019] After installing the second row of H-shaped packaging racks, use a long wooden strip to connect the tops of the three H-shaped packaging racks and nail them in place.

[0020] Furthermore, in the S2 pallet packaging, after the ceramic slab is centered in the H-shaped packaging frame, the ceramic slab is horizontally fixed with steel-plastic straps, and the four corners of the ceramic slab are reinforced and protected with paper corner protectors.

[0021] Furthermore, the H-shaped packaging frame used in each step has the following structure: The H-shaped packaging frame includes a wooden base frame, a wooden upright support frame, and a wooden load-bearing frame; the wooden base frame consists of two parallel base rods; the wooden upright support frame includes at least two sets, each set consisting of two symmetrically arranged uprights; the bottoms of the two uprights of each set are fixed to the outside of the two base rods respectively by a first fastener; the tops of the two uprights of each set are tightened by a second fastener; the wooden load-bearing frame includes at least two sets, the number of sets being equal to the number of sets of wooden upright support frames; each set of wooden load-bearing frames consists of two parallel short rods, the two short rods of each set being fixed to the outside of the two uprights of each set of wooden upright support frames respectively by a third fastener.

[0022] In the above-mentioned H-shaped packaging rack, the first fastener includes a first bolt and a first washer; the first bolt passes through the bottom rod from the outside of the upright; the second fastener includes a second bolt, a second washer, and a first nut; the third fastener includes a third bolt, a third washer, and a second nut; the second bolt passes through the upright from the outside of the short rod.

[0023] Furthermore, the U-shaped boom used in each step has the following structure: the U-shaped boom includes a first horizontal boom, a second horizontal boom, and a vertical boom; the first horizontal boom and the second horizontal boom are parallel to each other, and the ends of the first horizontal boom and the second horizontal boom are respectively fixedly connected to the two ends of the vertical boom; the two ends of the first horizontal boom are provided with lifting rings for suspending the U-shaped boom onto the gantry crane; the two sides of the second horizontal boom are provided with at least two sets of hook assemblies along the length of the horizontal boom for suspending large ceramic slabs onto the U-shaped boom; the length of the second horizontal boom is greater than the length of a container; the height of the vertical boom is greater than the thickness of the top of a container.

[0024] In the aforementioned U-shaped boom, each set of hook assemblies consists of a left hook and a right hook, which are respectively fixed to the left and right sides of the second horizontal boom by welding.

[0025] In the aforementioned U-shaped boom, support rods are provided on both sides of the upright boom.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] (1) The palletizing and container loading method of this application has the characteristics of high safety, high load capacity and low cost, and can solve the problem of how to palletize and pack large and large quantities of ceramic slabs and quickly load them into containers in a safe, low-damage and cost-controllable manner.

[0028] (2) The H-type packaging frame and U-type boom are auxiliary materials and equipment independently developed by the applicant for this improved palletizing and loading method. The H-type packaging frame of this application aims to provide a palletizing and packaging structure with high safety performance, high load capacity and low auxiliary material cost. The U-type boom of this application is used in conjunction with the factory's own overhead crane to effectively reduce the lifting cost of ceramic slabs. Moreover, the U-type boom can be adapted to the lifting of ceramic slabs of different specifications, and the hanging method is simpler, making the lifting process more convenient and faster. Attached Figure Description

[0029] Figure 1 A schematic diagram of the support structure using a type A support frame in existing technology;

[0030] Figure 2 A schematic diagram illustrating the palletizing process using protective wooden crates in existing technologies;

[0031] Figure 3 This is a schematic diagram of the H-type mounting bracket used in a preferred embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the H-type mounting bracket after palletizing and mounting in a cabinet, which is a preferred embodiment of the present invention.

[0033] Figure 5This is a schematic diagram showing the position of each H-type mounting bracket inside the container after palletizing and loading using the H-type mounting brackets, according to a preferred embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the structure of the H-type mounting bracket according to a preferred embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the U-shaped boom according to a preferred embodiment of the present invention;

[0036] Figure 8 This is a structural schematic diagram of the U-shaped boom from another angle, representing a preferred embodiment of the present invention.

[0037] Figure 9 This is a schematic diagram of the hoisting process of the U-shaped boom according to a preferred embodiment of the present invention;

[0038] In the diagram: H, H-shaped packaging rack; H1, first H-shaped packaging rack; H2, second H-shaped packaging rack; H3, third H-shaped packaging rack; H4, fourth H-shaped packaging rack; H5, fifth H-shaped packaging rack; H6, sixth H-shaped packaging rack; H7, seventh H-shaped packaging rack; U, U-shaped boom; A, lifting ring of the overhead crane; B, container; 1, wooden base frame; 101, base rod; 2, wooden upright support frame; 201, upright rod; 3, wooden load-bearing frame; 301, short rod; 4, first fastener; 5, second fastener; 6, third fastener; 7, first horizontal arm; 8, second horizontal arm; 9, upright arm; 10, lifting ring; 11, hook assembly; 12, support rod. Detailed Implementation

[0039] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0040] In this embodiment, taking the palletizing and loading of 1600×3200×12mm ceramic tile slabs in a 20-foot long container as an example, the palletizing and loading method of the present invention is illustrated, specifically including the following steps:

[0041] S1. Material preparation: Prepare H-shaped packaging racks for palletizing and packaging large ceramic slabs, lifting straps for binding large ceramic slabs, and U-shaped cranes for transferring large ceramic slabs into the container.

[0042] S2. Pallet Packaging: Thread two lifting straps across the H-shaped packaging frame, then hoist the prepared ceramic slab between the two uprights of the H-shaped frame, centering the slab within the frame. Tighten the top fasteners of the H-shaped frame, wrap the lifting straps around the ceramic slab, and await further hoisting. Figure 3 As shown, Figure 3A schematic diagram showing the ceramic slabs after being packaged using an H-shaped mounting frame.

[0043] S3. Install the U-shaped boom: Hang the lifting rings at both ends of the U-shaped boom on the lifting rings of the gantry crane, and control the horizontal and vertical positions of the U-shaped boom through the gantry crane to move it above the ceramic slabs that have been palletized and packaged.

[0044] S4. Container Loading: Attach the slings from step S2 to the hook assembly of the U-shaped crane boom; use the gantry crane to control the horizontal and vertical positions of the U-shaped crane boom again, and load multiple palletized and packaged ceramic slabs into the container in a specific order, such as... Figure 4-5 The diagram shows the palletized container after loading using H-type mounting racks and the position of each H-type mounting rack inside the container.

[0045] Specifically, the container loading process at S4 is as follows:

[0046] Install the first H-shaped packaging frame H1: Extend the U-shaped boom into the container and place the first H-shaped packaging frame at the innermost side of the container. Lower the U-shaped boom and, before loosening the slings, use two wooden beams to diagonally brace the other side of the container to prevent the first H-shaped packaging frame from falling over. Then, use wire to tie the upright of the H-shaped packaging frame near the innermost side to the hook on the side of the container to secure the first H-shaped packaging frame. Finally, remove the two wooden beams used for diagonal bracing.

[0047] Install the second H-shaped packaging frame H2: Extend the U-shaped boom into the container again, place the second H-shaped packaging frame into the container away from the innermost side of the first H-shaped packaging frame, lower the U-shaped boom, and before the slings are loosened, use two wooden beams to diagonally brace the uprights of the first H-shaped packaging frame to prevent the second H-shaped packaging frame from falling over; then use wire to tie the uprights of the second H-shaped packaging frame closest to the innermost side to the hooks on the side of the container to secure the second H-shaped packaging frame, and then remove the two wooden beams used for diagonal bracing;

[0048] Install the third and fourth H-shaped packing racks (H3 and H4): The third and fourth H-shaped packing racks are placed between the first and second H-shaped packing racks. The loading operation for the third H-shaped packing rack is the same as that for the first two H-shaped packing racks; however, the fixing method for adjacent H-shaped packing racks is different. When fixing, there should be a 25-30cm gap between the two uprights of the H-shaped packing rack and the two uprights of the adjacent H-shaped packing rack. Use two wooden strips, 35-40cm long, to fix them. At the same time, use wire to tie the wooden strips to the uprights to achieve fixation. This completes the overall loading of the first row of H-shaped packing racks in the container. After loading the first row of H-shaped packing racks, use a long wooden strip to connect the tops of the four H-shaped packing racks and nail them in place.

[0049] Install the fifth and sixth H-shaped packaging racks H5 and H6: The U-shaped boom extends into the container again, hoisting the fifth and sixth H-shaped packaging racks onto the outer sides of the container. Utilizing the space between the first row of H-shaped packaging racks, partially push the fifth H-shaped packaging rack into the space between the first and second H-shaped packaging racks. Secure the fifth H-shaped packaging rack to the container side using a long wooden beam and two short wooden strips within the space between the fifth H-shaped packaging rack and the container side. Then, partially push the sixth H-shaped packaging rack into the space between the third and fourth H-shaped packaging racks. Secure the sixth H-shaped packaging rack to the other side of the container using a long wooden beam and two short wooden strips within the space between the sixth H-shaped packaging rack and the other side of the container.

[0050] Install the seventh H-shaped packaging rack (H7): The U-shaped boom extends into the container again, hoisting the seventh H-shaped packaging rack between the fifth and sixth H-shaped packaging racks. Utilizing the gap space between the first row of H-shaped packaging racks, partially push the fifth H-shaped packaging rack into the gap between the third and fourth H-shaped packaging racks. Similarly, secure the seventh H-shaped packaging rack to the two adjacent H-shaped packaging racks using a long wooden beam and two short wooden strips, respectively, between the fifth and sixth H-shaped packaging racks. This completes the overall loading of the second row of H-shaped packaging racks in the container. After loading the second row of H-shaped packaging racks, connect the tops of the three H-shaped packaging racks with a long wooden strip and nail them in place.

[0051] As a further preferred solution, to better protect and reinforce the integrity of the ceramic slabs and prevent chipping or breakage at the edges due to bumps during transportation, thus improving transport safety, the ceramic slabs are centered within the H-shaped packaging frame in the S2 palletized packaging. They are then secured laterally with steel-plastic straps, and the four corners are reinforced and protected with paper corner protectors.

[0052] The H-shaped packaging rack and U-shaped boom are auxiliary materials and equipment independently developed by the applicant for this improved palletizing and loading method. The H-shaped packaging rack of this application aims to provide a palletizing and packaging structure with high safety performance, high load capacity, and low auxiliary material cost. The U-shaped boom of this application is used in conjunction with the factory's own overhead crane to effectively reduce the lifting cost of ceramic slabs. Moreover, the U-shaped boom can be adapted to the lifting of ceramic slabs of different specifications, and the hanging method is simpler, making the lifting process more convenient and faster.

[0053] Specifically, such as Figure 6As shown, the H-shaped packaging frame used in each step has the following structure: The H-shaped packaging frame H includes a wooden base frame 1, a wooden upright support frame 2, and a wooden load-bearing frame 3; the wooden base frame consists of two parallel bottom rods 101; the wooden upright support frame includes at least two sets, each set consisting of two symmetrically arranged uprights 201; the bottom of the two uprights of each set is fixed to the outside of the two base rods by a first fastener 4; the top of the two uprights of each set is tightened by a second fastener 5; the wooden load-bearing frame includes at least two sets, the number of sets of the wooden load-bearing frame is equal to the number of sets of the wooden upright support frame; each set of the wooden load-bearing frame consists of two parallel short rods 301, the two short rods of each set are fixed to the outside of the two uprights of each set of the wooden upright support frame by a third fastener 6.

[0054] In this structure, the application designs an H-shaped palletizing rack with a wooden base frame, wooden upright support frame, and wooden load-bearing frame. This allows stacked ceramic slabs to be stably inserted between two uprights, with the bottom of the stacked ceramic slabs abutting against short poles. A second fastener tightens the two uprights, clamping the stacked ceramic slabs upright. Compared to an A-type support frame, this H-shaped rack saves base frame space, allowing for more palletizing racks to be loaded within the same container, increasing carrying capacity. Compared to protective wooden crates, the multiple short poles of this palletizing rack, acting as support points, better protect the central portion of the ceramic slabs, preventing breakage and improving transport safety.

[0055] In addition, since the entire pallet packaging frame is made of wood, it can provide a certain cushioning effect at the contact point with the ceramic slab, which is beneficial to protect the ceramic slab from damage during subsequent hoisting and transfer to container trucks; the auxiliary material cost of the wooden pallet packaging frame is 1.7 yuan per piece, thus reducing the cost of auxiliary materials.

[0056] In this H-shaped packaging rack, the design of the two uprights serves two purposes. First, the space between the two uprights forms a support space for the large ceramic slabs, allowing stacked ceramic slabs to be placed upright, increasing the load capacity of a single pallet packaging structure. Second, during container loading, the flexibility and nail-bearing properties of the wooden uprights allow them to be nailed together with wooden blocks or strips, providing support and reinforcement between two adjacent H-shaped packaging racks. This ensures that each H-shaped packaging rack can stand stably inside the container even when carrying heavy ceramic slabs.

[0057] In the aforementioned H-shaped packaging rack, the first fastener includes a first bolt and a first washer; the first bolt passes through the bottom rod from the outside of the upright; the second fastener includes a second bolt, a second washer, and a first nut; the third fastener includes a third bolt, a third washer, and a second nut; the second bolt passes through the upright from the outside of the short rod. In this structure, the installation positions of the first and third fasteners are designed to avoid contact friction between the ceramic plate and the metal fasteners, allowing the entire palletized packaging rack to effectively perform its load-bearing and cushioning functions.

[0058] Specifically, such as Figure 7-8 As shown, the U-shaped boom used in each step has the following structure: The U-shaped boom U includes a first horizontal arm 7, a second horizontal arm 8, and a vertical arm 9; the first and second horizontal arms are parallel to each other, and their ends are fixedly connected to both ends of the vertical arm; the first horizontal arm has lifting rings 10 at both ends for suspending the U-shaped boom onto the gantry crane; the second horizontal arm has at least two sets of hook assemblies 11 along its length for suspending large ceramic slabs onto the U-shaped boom; the length of the second horizontal arm is greater than the length of a shipping container; the height of the vertical arm is greater than the thickness of the top of a shipping container. In the above U-shaped boom, each set of hook assemblies is divided into a left hook and a right hook, which are fixed to the left and right sides of the second horizontal arm respectively by welding.

[0059] In the aforementioned U-shaped boom, support rods 12 are provided on both sides of the upright boom. The purpose of providing support rods is to ensure that the U-shaped boom is stably anchored on the ground when not in use, preventing it from tipping over and causing a safety accident.

[0060] This application utilizes a self-developed U-shaped boom structure, employing the factory's own gantry crane, to replace the existing lifting method of using forklifts and single-arm cranes, effectively reducing the lifting cost of large ceramic slabs. Furthermore, this U-shaped boom, with multiple hook assemblies, can adapt to the lifting of ceramic slabs of different specifications, and the mounting method is simpler, making the lifting process easier and faster. Gantry cranes are conventional equipment in this field, used for vertically lifting and horizontally moving heavy objects within a certain range, and are widely used in material yards, bulk loading and unloading operations, and cargo transportation.

[0061] The specific hoisting process is as follows:

[0062] like Figure 9As shown, firstly, the gantry crane is used to move the lifting ring A above the U-shaped boom U, and the lifting rings at both ends of the first horizontal boom are hooked onto the lifting ring A of the gantry crane. The gantry crane is used to control the horizontal, forward, backward, and vertical movement of the U-shaped boom until it is moved above the palletized ceramic slabs. The ceramic slabs packaged in the H-shaped packaging rack H are then secured with slings, and the slings are hooked onto the hook assembly of the second horizontal boom. Finally, the gantry crane is used again to control the horizontal, forward, backward, and vertical movement of the U-shaped boom, and the second horizontal boom is extended into the container B in a certain sequence. This basically realizes the automated lifting of the ceramic slabs, improving lifting efficiency and lifting quality.

[0063] The following example uses a 20-foot long container to load large ceramic tile slabs with dimensions of 1600×3200×12mm. The differences in container loading capacity and cost between the present invention and two existing palletizing and loading methods are compared. For specific comparison items, please refer to Table 1.

[0064] Table 1. Comparison of Container Loading Capacity and Cost Items for Different Palletizing and Loading Methods

[0065]

[0066] In summary, the first method, using an A-type support frame, offers high tile protection and safety, and high loading efficiency. However, the cost of auxiliary materials is 9.6 yuan per piece, which is relatively high, necessitating additional costs for equipment such as cranes and forklifts. The second method, using protective wooden crates, offers lower tile protection and safety, and lower loading efficiency. While the cost of auxiliary materials is 4.1 yuan per piece, this is also relatively high, requiring additional costs for equipment such as cranes and forklifts. This invention, using an H-type mounting frame, offers high tile protection and safety, high loading efficiency, and low auxiliary material costs of 1.7 yuan per piece. It eliminates the need for crane and forklift rental costs, and the U-shaped crane can be reused.

[0067] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A method for palletizing and loading large-capacity, low-cost ceramic slabs for export, characterized in that: Includes the following steps: S1. Material preparation: Prepare H-shaped packaging racks for palletizing and packaging large ceramic slabs, lifting straps for binding large ceramic slabs, and U-shaped cranes for transferring large ceramic slabs into the container. S2, Pallet Packaging: Thread two slings across the H-shaped packaging frame, then hoist the prepared ceramic slab between the two uprights of the H-shaped packaging frame, centered inside the H-shaped packaging frame. Tighten the top fasteners of the H-shaped packaging frame, wrap the slings around the ceramic slab, and wait for hoisting. S3. Install the U-shaped boom: Hang the lifting rings at both ends of the U-shaped boom on the lifting rings of the gantry crane, and control the horizontal and vertical positions of the U-shaped boom through the gantry crane to move it above the ceramic slabs that have been palletized and packaged. S4. Container loading: Hang the slings from step S2 on the hook assembly of the U-shaped boom; use the overhead crane to control the horizontal and vertical positions of the U-shaped boom again, and load multiple palletized and packaged ceramic slabs into the container in a certain order. The H-shaped packaging frame used in each step has the following structure: The H-shaped packaging frame includes a wooden base frame, a wooden upright support frame, and a wooden load-bearing frame; the wooden base frame consists of two parallel base rods; the wooden upright support frame includes at least two sets, each set consisting of two symmetrically arranged uprights; the bottoms of the two uprights of each set are fixed to the outside of the two base rods by first fasteners; the tops of the two uprights of each set are tightened by second fasteners; the wooden load-bearing frame includes at least two sets, the number of sets being equal to the number of sets of wooden upright support frames; each set of wooden load-bearing frames consists of two parallel short rods, and the two short rods of each set are fixed to the outside of the two uprights of each set by third fasteners.

2. The method for palletizing and loading large-capacity, low-cost ceramic slabs for export as described in claim 1, characterized in that: The specific process of loading containers at S4 is as follows: Install the first H-shaped packing frame: Extend the U-shaped boom into the container and place the first H-shaped packing frame at the innermost side of the container. Lower the U-shaped boom and, before loosening the slings, use two wooden beams to diagonally brace the other side of the container to prevent the first H-shaped packing frame from falling over. Then, use wire to tie the upright of the H-shaped packing frame closest to the innermost side to the hook on the side of the container to secure the first H-shaped packing frame. Finally, remove the two wooden beams used for diagonal bracing. Install the second H-shaped packing frame: Extend the U-shaped boom into the container again, place the second H-shaped packing frame into the container away from the innermost side of the first H-shaped packing frame, lower the U-shaped boom, and before the slings are loosened, use two wooden beams to diagonally brace the uprights of the first H-shaped packing frame to prevent the second H-shaped packing frame from falling over; then use wire to tie the uprights of the second H-shaped packing frame closest to the innermost side to the hooks on the side of the container to secure the second H-shaped packing frame, and then remove the two wooden beams used for diagonal bracing; Install the third and fourth H-shaped packing racks: The third and fourth H-shaped packing racks are placed between the first and second H-shaped packing racks. The loading operation for the third H-shaped packing rack is the same as that for the first two H-shaped packing racks; however, the fixing method for adjacent H-shaped packing racks is different. When fixing, there should be a 25-30cm gap between the two uprights of the H-shaped packing rack and the two uprights of the adjacent H-shaped packing rack. Two wooden strips, 35-40cm long, are used for fixing. At the same time, the wooden strips are tied to the uprights with wire to achieve fixation. This completes the overall loading of the first row of H-shaped packing racks in the container. Install the fifth and sixth H-shaped packing racks: The U-shaped boom extends into the container again, hoisting the fifth and sixth H-shaped packing racks onto the outer sides of the container. Utilizing the space between the first row of H-shaped packing racks, partially push the fifth H-shaped packing rack into the gap between the first and second H-shaped packing racks. Secure the fifth H-shaped packing rack to the container side using a long wooden beam and two short wooden strips within the space between the fifth H-shaped packing rack and the container side. Then, partially push the sixth H-shaped packing rack into the gap between the third and fourth H-shaped packing racks. Secure the sixth H-shaped packing rack to the other side of the container using a long wooden beam and two short wooden strips within the space between the sixth H-shaped packing rack and the other side of the container. Install the seventh H-shaped packing rack: The U-shaped boom extends into the container again, hoisting the seventh H-shaped packing rack between the fifth and sixth H-shaped packing racks. Making full use of the gap space between the first row of H-shaped packing racks, partially push the fifth H-shaped packing rack into the gap between the third and fourth H-shaped packing racks. Similarly, the seventh H-shaped packing rack is fixed between the fifth and sixth H-shaped packing racks by a long wooden beam and two short wooden strips, respectively. This completes the overall loading of the second row of H-shaped packing racks in the container.

3. The method for palletizing and loading large-capacity, low-cost ceramic slabs for export as described in claim 2, characterized in that: After installing the first row of H-shaped packaging racks, use a long wooden strip to connect the tops of the four H-shaped packaging racks and nail them in place. After installing the second row of H-shaped packaging racks, use a long wooden strip to connect the tops of the three H-shaped packaging racks and nail them in place.

4. The method for palletizing and loading large-capacity, low-cost ceramic slabs for export as described in claim 1, characterized in that: In S2 pallet packaging, after centering the ceramic slab in the H-shaped packaging frame, the ceramic slab is horizontally fixed with steel-plastic straps, and the four corners of the ceramic slab are reinforced and protected with paper corner protectors.

5. The method for palletizing and loading large-capacity, low-cost ceramic slabs for export as described in claim 4, characterized in that: The first fastener includes a first bolt and a first washer; the first bolt passes through the outside of the upright and is mounted on the base rod; the second fastener includes a second bolt, a second washer, and a first nut; the third fastener includes a third bolt, a third washer, and a second nut; the second bolt passes through the outside of the short rod and is mounted on the upright.

6. The method for palletizing and loading large-capacity, low-cost ceramic slabs for export as described in claim 1, characterized in that: The U-shaped boom used in each step has the following structure: The U-shaped boom includes a first horizontal boom, a second horizontal boom, and a vertical boom; the first horizontal boom and the second horizontal boom are parallel to each other, and the ends of the first horizontal boom and the second horizontal boom are respectively fixedly connected to the two ends of the vertical boom; the two ends of the first horizontal boom are provided with lifting rings for suspending the U-shaped boom onto the gantry crane; the two sides of the second horizontal boom are provided with at least two sets of hook assemblies along the length of the horizontal boom for suspending large ceramic slabs onto the U-shaped boom; the length of the second horizontal boom is greater than the length of a container; the height of the vertical boom is greater than the thickness of the top of a container.

7. The method for palletizing and loading large-capacity, low-cost ceramic slabs for export as described in claim 6, characterized in that, Each hook assembly consists of a left hook and a right hook, which are fixed to the left and right sides of the second horizontal arm by welding, respectively.

8. The method for palletizing and loading large-capacity, low-cost ceramic slabs for export as described in claim 6, characterized in that, The upright arm is equipped with support rods on both sides.

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