A laser cutting machine bed, a transport unit and a transport method

Abstract

The application provides a laser cutting machine bed, a transportation unit and a transportation method, which comprise a main frame composed of standard rectangular tubes, four coaxial composite connecting points arranged at four corner support positions of the main frame, the coaxial composite connecting points being composed of built-in reinforcing round steel and a foundation plate, the built-in reinforcing round steel being arranged in the rectangular tube of the main frame and being arranged perpendicularly to the upper plane of the main frame, a female thread hole being arranged at the top end of the built-in reinforcing round steel, an elongated stud being arranged in the female thread hole and a chamfer being arranged at the bottom end, the foundation plate being arranged at the lower part of the main frame at a position corresponding to the built-in reinforcing round steel, a through hole being arranged on the foundation plate, and the central axis of the through hole, the central axis of the built-in reinforcing round steel and the central axis of the female thread hole at the top of the round steel being coaxially arranged. The problems of high transportation cost, difficult stacking and transportation and difficult loading and unloading operation of the existing laser cutting equipment are solved.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting machine technology, specifically relating to a laser cutting machine bed, a transport unit, and a transport method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] The laser cutting equipment industry currently faces numerous bottlenecks in transportation, severely hindering market expansion and supply efficiency. Due to the large size of a single unit, it often occupies a full space in a standard container, resulting in an excessively high proportion of cost per unit during sea freight. Current attempts involve stacking multiple units for transport, but existing solutions rely on custom-made large steel frames or wooden pallets for layered fixation. These auxiliary structures are bulky, costly, mostly disposable, and cumbersome to disassemble, further increasing packaging and disposal costs. Additionally, to control costs and weight, the equipment bed is generally constructed from thin-walled rectangular tubing. However, in the stacked configuration, key lifting points must withstand enormous concentrated loads, and the thin-walled structure lacks sufficient strength. Thickening the overall structure or replacing parts with cast steel leads to a sharp increase in material and manufacturing costs. Upon arrival, removing heavy equipment from the container is difficult and risky, often requiring forklifts or pry bars, which can easily damage the precision guide rails, racks, and container floor. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a laser cutting machine bed, a transport unit, and a transport method, which solves the problems of high transportation costs, unsuitability for stacked screw transport, and difficult loading and unloading operations associated with existing laser cutting equipment.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides a laser cutting machine bed, comprising: a main frame constructed of welded standard rectangular tubes, wherein the main frame has at least four coaxial composite connection points located at the four corner support positions of the bed; each coaxial composite connection point is composed of an internal reinforcing round steel bar and a base plate; the internal reinforcing round steel bar is disposed within the rectangular tube of the main frame and is arranged perpendicularly to the upper plane of the main frame; the top end of the internal reinforcing round steel bar has an internal threaded hole, in which an extended stud is installed, and the bottom end is chamfered; the base plate is disposed at the lower part of the main frame corresponding to the internal reinforcing round steel bar, and the base plate has a through hole; the central axis of the through hole, the central axis of the internal reinforcing round steel bar, and the central axis of the internal threaded hole at the top of the round steel bar are coaxially arranged.

[0006] As a further implementation, the coaxial composite connection point is manufactured through a local layered reinforcement welding process. A square steel pipe is welded to the upper end of the built-in reinforcing round steel. The square steel pipe is provided with a plug hole that matches the built-in reinforcing round steel. The built-in reinforcing round steel passes through this hole, and its exposed upper end is fully welded to the square steel pipe. The lower end is chamfered and plugged into the main frame.

[0007] As a further implementation, an internal threaded hole is provided at the lower end of the main frame, and an unloading traction component is installed in the internal threaded hole; there may be one or two internal threaded holes. If there is one, it is arranged at the center of the main frame; if there are two, they are arranged symmetrically on both sides of the tail of the main frame.

[0008] As a further implementation, the unloading traction component is a ring-shaped traction hook.

[0009] As a further implementation, the base plate is welded and fixed to the lower surface of the main frame via base legs.

[0010] Secondly, the present invention also provides a transport unit, which is composed of multiple laser cutting machine beds stacked together.

[0011] Thirdly, the present invention also provides a method for transporting the aforementioned transport unit, comprising the following steps: S1: Fix the first laser cutting machine bed and screw in the extended studs into the internal threaded holes of its four coaxial composite connection points; after screwing in the extended studs, use a level to level the upper surface of the main frame, add shims under the foot plate to ensure that the main frame is evenly stressed, and then hoist the upper laser cutting machine bed. S2: Hoist the upper laser cutting machine bed and lower it to align it so that the extended stud passes through the foot plate through hole of the corresponding connection point of the upper laser cutting machine bed; S3: Screw the nut into the upper part of the extended stud and tighten it to rigidly connect the upper and lower equipment; when tightening the nut, use a diagonal alternation and multiple increasing torque to ensure uniform stress distribution in the stacked screw body connection; S4: Repeat steps S1 to S3 to stack and secure more layers of the laser cutting machine bed; S5: After stacking, the transport unit is pulled out using a traction device.

[0012] As a further implementation, in step S2, a buffer pad is inserted into the top of the extended stud before the upper laser cutting machine bed is lowered and aligned.

[0013] As a further implementation, an annular traction hook is installed on the built-in reinforcing round steel of the uppermost laser cutting machine bed of the transport unit.

[0014] As a further implementation, in step S5, when the transport unit is placed inside the container, a traction device is connected to the unloading traction component at the rear of the main frame; a horizontal force is applied, and the equipment is smoothly pulled out of the container by the traction device.

[0015] Compared with the prior art, the advantages and positive effects of this invention are: This invention solves the problem of insufficient strength of thin-walled tubes and the production cost of replacing them with thick-walled tubes or cast steel parts. It also solves the problem of the need to manufacture and install multiple independent accessories for traditional laser cutting machine beds. This simplifies the bed structure design, reduces the types and number of parts, and lowers material costs and management complexity. The top of the built-in reinforcing round steel is provided with an internally threaded hole, in which an extended stud is installed. The base plate is set at the lower part of the main frame corresponding to the built-in reinforcing round steel, and the base plate has a through hole. The central axis of the through hole, the central axis of the built-in reinforcing round steel, and the central axis of the internally threaded hole at the top of the round steel are coaxially arranged, which fundamentally ensures that the stress center of multiple functional points is consistent, avoiding additional bending moments and risks caused by eccentric forces. It can achieve stability when multiple laser cutting machine beds are stacked and transported, avoiding the need for layered fixing with additional steel frames or wooden pallets. The bracket itself is bulky, costly, not reusable, and difficult to disassemble, increasing the overall packaging and disposal costs. The coaxial composite connection point integrates three independent functions: lifting point, stacked stud connection point, and equipment base point.

[0016] The transportation method of this invention enables the main frame to be self-supporting and transported at high density, reducing logistics costs; it allows 2-4 laser cutting machine beds to be safely and vertically stacked in a container, improving the space utilization of shipping containers; by adding shims under the foot plates to ensure uniform stress on the main frame before hoisting the upper laser cutting machine bed, the main frame will not deform during transportation; when tightening the nuts, a diagonal alternation and multiple torque increments are used to ensure uniform stress distribution in the stacked body connection, while also ensuring that the stacked body forms a whole, maintaining overall stability during transportation; the uppermost laser cutting machine bed of the transportation unit has an internal reinforcing round steel with an annular traction hook installed on it, which, together with the front annular traction hook, allows the transportation unit to be loaded and unloaded using various equipment, and the loading and unloading method can be selected according to the actual situation. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of the laser cutting machine bed of the present invention; Figure 2 This is a schematic diagram of the rectangular tube structure of the present invention; Figure 3 This is a partial schematic diagram of the coaxial composite connection point structure of the present invention; Figure 4 This is a diagram of the stacked screw connection structure of the multi-layer laser cutting machine bed of the present invention; Figure 5 This is a schematic diagram of the transport unit of the present invention.

[0019] In the diagram: 1. Main frame; 2. Rectangular tube; 3. Internal reinforcing round steel; 4. Insertion hole; 5. Internal threaded hole; 6. Foot plate; 7. Through hole; 8. Foot support leg; 9. Unloading traction component; 10. Extended stud; 11. Nut. Detailed Implementation

[0020] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. Example 1 This embodiment provides a laser cutting machine bed, such as Figures 1-5 As shown, it includes: a main frame 1 constructed from standard rectangular tubes 2 welded together; at least four coaxial composite connection points on the main frame 1, located at the four corner support positions of the bed; each coaxial composite connection point is composed of an internal reinforcing round steel 3 and a base plate 6; the internal reinforcing round steel 3 is disposed within the rectangular tubes 2 of the main frame 1, and is arranged perpendicular to the upper plane of the main frame 1; the top of the internal reinforcing round steel 3 is provided with an internal threaded hole 5, and an extended stud 10 is installed in the internal threaded hole 5. The bottom end is chamfered; the foot plate 6 is set at the lower part of the main frame 1 corresponding to the built-in reinforcing round steel 3, and the foot plate 6 is provided with a through hole 7; the central axis of the through hole 7, the central axis of the built-in reinforcing round steel 3 and the central axis of the internal thread hole 5 at the top of the round steel are coaxially arranged, which can realize the stability when multiple laser cutting machine beds are stacked and transported, avoiding the need for layered fixing by additional steel frames or wooden pallets, and the bracket itself is bulky, costly, not reusable, and troublesome to disassemble, increasing the overall packaging and disposal costs. The coaxial composite connection point integrates three independent functions: lifting point, stacked screw connection point, and equipment footing point. Using the coaxial composite connection point at critical lifting points that need to withstand the huge concentrated load generated by stacked screws from multiple machines solves the problem of insufficient strength of thin-walled tubes and the production cost issue of replacing them with thick-walled tubes or cast steel parts. It also eliminates the need for manufacturing and installing multiple independent accessories separately in traditional laser cutting machine beds, simplifying the bed structure design, reducing the types and quantities of parts, lowering material costs and management complexity, and fundamentally ensuring that the stress center of multiple functional points is consistent, avoiding additional bending moments and risks caused by eccentric forces.

[0022] As a further implementation, the coaxial composite connection point is manufactured using a localized layered reinforced welding process. A square steel tube is welded to the upper end of the built-in reinforcing round steel 3. The square steel tube has an insertion hole 4 that matches the round steel of the built-in reinforcing round steel 3. The round steel 3 passes through this hole, with its exposed upper end fully welded to the square steel tube. Its lower end is chamfered and plugged into the main frame 1. Using solid round steel as the built-in reinforcement transforms the surface contact load at the end of the standard thin-walled rectangular tube 2 into a body load-bearing load of high-strength solid round steel. The bottom chamfer facilitates welding and also solves the key weakness of localized stress concentration at the connection point. This simple structure achieves improved compressive and tear resistance.

[0023] As a further implementation, an internally threaded hole 5 is provided at the lower rear of the main frame 1, and a loading traction component 9 is installed in the internally threaded hole 5. There may be one or two internally threaded holes 5; if one is provided, it is located at the center of the main frame 1; if two are provided, they are located symmetrically on both sides of the rear of the main frame 1. The loading traction component 9 is a ring-shaped traction hook. In traditional equipment, when unloading, operators often need to find gaps in the frame to tie and drag the load, which can easily damage the equipment or cause danger. This traction point provides the main frame 1 with a horizontally traction and reliable force-bearing interface.

[0024] As a further implementation, the base plate 6 is welded and fixed to the lower surface of the main frame 1 via base legs 8. By setting the base legs 8, a gap is formed between the base plate 6 and the main frame 1, allowing the studs to be tightened within this space when the main frames 1 are stacked.

[0025] Example 2 This embodiment provides a transport unit composed of multiple laser cutting machine beds stacked together. This allows the main frame 1 to be self-supporting and transported at high density, reducing logistics costs. The transport unit utilizes the robust coaxial composite connection points of the equipment itself as the stacking connecting skeleton, eliminating the need for bulky, heavy, and disposable large external packaging wooden crates or steel frames; it can safely and vertically stack 2-4 laser cutting machine beds within a shipping container, thus improving the space utilization of ocean freight containers.

[0026] Example 3 This embodiment provides a transportation method for a transportation unit, including the following steps: S1: Fix the first laser cutting machine bed and screw in the extended studs 10 into the internal threaded holes 5 of its four coaxial composite connection points; after screwing in the extended studs 10, use a level to level the upper surface of the main frame 1, add shims under the foot plate 6 to ensure that the main frame 1 is evenly stressed, and then hoist the upper laser cutting machine bed. S2: Hoist the upper laser cutting machine bed and lower it to align it so that the extended stud 10 passes through the through hole 7 of the foot plate 6 at the corresponding connection point of the upper laser cutting machine bed; S3: Screw the nut 11 into the exposed part of the extended stud 10 and lock it to rigidly connect the upper and lower equipment; when locking the nut 11, tighten it by alternating diagonal and increasing the torque multiple times to ensure that the stress distribution of the stacked screw body is uniform, and at the same time, it can ensure that the stacked screw body can form a whole, so that it can maintain overall stability during transportation. S4: Repeat steps S1 to S3 to stack and secure more layers of the laser cutting machine bed; S5: After stacking, the transport unit is pulled out using a traction device.

[0027] As a further implementation, in step S2, a buffer pad is inserted into the top of the extended stud 10 before the upper laser cutting machine bed is lowered and aligned.

[0028] As a further implementation, an annular traction hook is installed on the built-in reinforcing round steel 3 of the uppermost laser cutting machine bed of the transport unit. In conjunction with the annular traction hook at the front, the transport unit can be loaded and unloaded using various equipment, and the loading and unloading method can be selected according to the actual situation.

[0029] As a further implementation, in step S5, when the transport unit is placed inside the container, a traction device is connected to the unloading traction member 9 at the rear of the main frame 1; a horizontal force is applied, and the equipment is smoothly pulled out of the container by the traction device.

[0030] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A transport unit for a laser cutting machine bed, characterized in that, include: The transport unit is composed of multiple laser cutting machine beds stacked together. Each laser cutting machine bed includes a main frame constructed from welded standard rectangular tubes. The main frame has at least four coaxial composite connection points located at the four corner support positions of the machine bed. Each coaxial composite connection point consists of an internal reinforcing round steel bar and a base plate. The internal reinforcing round steel bar is housed within the rectangular tubes of the main frame and is arranged perpendicular to the upper plane of the main frame. The top of the internal reinforcing round steel bar has an internally threaded hole into which an extended stud is installed, and the bottom end is chamfered. The base plate is located at the lower part of the main frame corresponding to the internal reinforcing round steel bar and has a through hole. The central axis of the through hole, the central axis of the internal reinforcing round steel bar, and the central axis of the internally threaded hole at the top of the round steel bar are coaxially aligned. The coaxial composite connection point is manufactured using a localized layered reinforcement welding process. A square steel pipe is welded to the upper end of the built-in reinforcing round steel. The square steel pipe has an insertion hole that matches the built-in reinforcing round steel. The built-in reinforcing round steel passes through this hole, and its exposed upper end is fully welded to the square steel pipe. The lower end is chamfered and plugged into the main frame.

2. The transport unit for a laser cutting machine bed as described in claim 1, characterized in that, An internal threaded hole is provided at the lower end of the main frame, and an unloading traction component is installed in the internal threaded hole; there may be one or two internal threaded holes. If there is one, it is located at the center of the main frame. If there are two, they are located symmetrically on both sides of the tail of the main frame.

3. The transport unit for a laser cutting machine bed as described in claim 2, characterized in that, The unloading traction component is a ring-shaped traction hook.

4. The transport unit for a laser cutting machine bed as described in claim 1, characterized in that, The base plate is welded and fixed to the lower surface of the main frame via base legs.

5. A method for transporting a transport unit based on a laser cutting machine bed as described in any one of claims 1 to 4, characterized in that, Includes the following steps: S1: Fix the first laser cutting machine bed and screw in the extended studs into the internal threaded holes of its four coaxial composite connection points; after screwing in the extended studs, use a level to level the upper surface of the main frame, add shims under the foot plate to ensure that the main frame is evenly stressed, and then hoist the upper laser cutting machine bed. S2: Hoist the upper laser cutting machine bed and lower it to align it so that the extended stud passes through the foot plate through hole of the corresponding connection point of the upper laser cutting machine bed; S3: Screw the nut into the upper part of the extended stud and tighten it to rigidly connect the upper and lower equipment; when tightening the nut, use a diagonal alternation and multiple increasing torque to ensure uniform stress distribution in the stacked screw body connection; S4: Repeat steps S1 to S3 to stack and secure more layers of the laser cutting machine bed; S5: After stacking, the transport unit is pulled out using a traction device.

6. The transportation method as described in claim 5, characterized in that, In step S2, a buffer pad is inserted into the top of the extended stud before the upper laser cutting machine bed is lowered and aligned.

7. The transportation method as described in claim 5, characterized in that, The uppermost layer of the transport unit has a built-in reinforcing round steel frame for laser cutting, on which a ring-shaped traction hook is installed.

8. The transportation method as described in claim 6, characterized in that, In step S5, when the transport unit is placed inside the container, a traction device is connected to the unloading traction component at the rear of the main frame; a horizontal force is applied, and the equipment is smoothly pulled out of the container through the traction device.

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