A mobile factory and processing method for on-site fabrication of prefabricated secondary steel structures

Abstract

This invention relates to a mobile factory and processing method for on-site fabrication of prefabricated secondary steel structures, comprising a box-like structure; the box-like structure includes a top plate, a bottom plate, supporting columns, a first side wall, and a second side wall; the first side wall includes a first upper side wall and a first lower side wall that can be flipped open; after the first upper side wall and the first lower side wall are flipped open horizontally, the first upper side wall forms a top plate wing, and the first lower side wall forms a bottom plate wing, flush with the upper surface of the bottom plate; a first guide rail is laid on the bottom plate, and a second guide rail is laid on the first lower side wall, with bevels of no more than 45° on both the first and second guide rails; the first guide rail forms a first workstation for storing profile cutting equipment and profile drilling equipment within the box-like structure; the second guide rail forms a second workstation for the profile cutting equipment and a third workstation for the profile drilling equipment. This invention enables on-site fabrication of prefabricated secondary steel structures, saving time and economic costs, and shortening the construction cycle.

Description

Technical Field

[0001] This invention relates to the field of mobile factories, and more specifically to a mobile factory and processing method for on-site processing of prefabricated secondary steel structures. Background Technology

[0002] In the construction industry, such as the building decoration sector, a large amount of steel structure is often used. To improve construction efficiency and reduce construction difficulty, the concept of prefabricated construction has been proposed and widely applied. Prefabricated construction often involves the prefabrication of secondary steel structures. In current technology, the prefabrication of secondary steel structures is generally carried out in the factory for customization, and then transported in batches to the construction site after completion.

[0003] As construction projects change and construction sites constantly change, the drawbacks of factory-customized processing become more apparent. From factory cooperation, customized production, and transportation, a lot of time is required. Furthermore, some pre-processed sub-steel structures are prone to deformation and damage during transportation, rendering them unusable on-site and requiring reprocessing and transportation from the factory, resulting in a relatively long cycle.

[0004] In the prior art, the concept of a mobile factory has been proposed. For example, patent document CN214724200U discloses a mobile factory for construction sites, which transports the mobile factory to the construction site and performs drilling, milling, bending, cutting and welding manufacturing on the construction site. Summary of the Invention

[0005] To improve construction efficiency and shorten construction cycles in the field of building decoration, this invention provides a mobile factory and processing method for on-site processing of prefabricated secondary steel structures, enabling on-site processing and transfer according to different construction projects.

[0006] The technical objective of this invention is achieved through the following technical solution:

[0007] A mobile factory for on-site fabrication of prefabricated secondary steel structures, comprising:

[0008] A rectangular box, profile cutting equipment, profile drilling equipment and profile welding equipment; the box includes a top plate, a bottom plate and supporting columns between the four corners of the top plate and the bottom plate, the top plate and the bottom plate are rectangular plate structures respectively;

[0009] First sidewalls are provided on both sides of the length of the box, and second sidewalls are provided on both sides of the width of the box;

[0010] The first sidewall includes a first upper sidewall and a first lower sidewall. The first upper sidewall is hinged to the edge of the top plate, and the first lower sidewall is hinged to the edge of the bottom plate.

[0011] After the first upper sidewall and the first lower sidewall are flipped open in a horizontal direction, the first upper sidewall forms a top plate wing and the first lower sidewall forms a bottom plate wing, and the upper surface of the first lower sidewall is flush with the upper surface of the bottom plate.

[0012] A first guide rail is provided at one end of the box body near the length of the box body, and is laid along the width of the box body. The first guide rail is laid along one side of the width of the bottom plate towards the other side of the width of the bottom plate. A second guide rail is laid on the first lower side wall corresponding to the extension direction of the first guide rail. The first guide rail and the second guide rail are respectively provided with a bevel of no more than 45° at the end of the first lower side wall that is hinged to the edge of the bottom plate and the end of the second guide rail that is hinged to the edge of the bottom plate.

[0013] The first guide rail forms the first workstation for storing the profile cutting equipment and the profile drilling equipment respectively inside the box; after the first lower side wall is flipped open in the horizontal direction relative to the bottom plate, the second guide rail forms the second workstation for the profile cutting equipment on one side of the first lower side wall, and the second guide rail forms the third workstation for the profile drilling equipment on the other side of the first lower side wall.

[0014] The profile welding equipment is located on the bottom plate inside the box.

[0015] Furthermore, a support plate is provided at one end of the second guide rail near the first guide rail, which is hinged to the second guide rail. The second guide rail is provided with a first receiving groove for accommodating the support plate. The first guide rail is provided with a second receiving groove at one end near the second guide rail corresponding to the support plate. After the support plate is flipped toward the outside of the box, it is stored in the first receiving groove. After the first lower sidewall is flipped toward the horizontal state, the support plate is flipped toward the second receiving groove, and the free end of the support plate crosses the bevel at the ends of the first and second guide rails and is mounted in the second receiving groove.

[0016] Furthermore, the bottom of the profile cutting equipment and the bottom of the profile drilling equipment are respectively provided with a movable base. The movable base is provided with grooved guide rollers that cooperate with the first guide rail and the second guide rail. The movable base moves along the first guide rail and the second guide rail to realize the switching between the first station and the second station, as well as the switching between the first station and the third station.

[0017] Furthermore, the sidewall of the first receiving groove is provided with a notch for lifting the support plate housed in the first receiving groove.

[0018] Furthermore, a third track is provided on the base plate in a direction perpendicular to the first guide rail. The third track is a grooved track. The grooved track is lower than the first guide rail and the first guide rail is disconnected at the position where the first guide rail and the third track intersect. The third track is horizontally arranged along the length of the base plate. A profile conveying device is also provided between the second and third workstations. The profile conveying device is equipped with a slider or roller that cooperates with the third track.

[0019] Furthermore, the bottom of the profile welding equipment is also equipped with a movable base that cooperates with the third track. The movable base cooperates with the third track via a slider or roller.

[0020] Furthermore, a movable support is provided at the bottom of the base plate, and a support is provided on the side of the first lower sidewall near the outer side of the box; after the first lower sidewall is flipped in the horizontal direction, it is supported by the support below the first lower sidewall so that the first lower sidewall remains horizontal.

[0021] Furthermore, the support part includes an upper support rod and a lower support rod. A mounting seat is installed on the first lower side wall. One end of the upper support rod is hinged to the mounting seat. A connecting part is connected between the other end of the upper support rod and one end of the lower support rod. The connecting part is provided with an internal thread adjustment hole. The upper support rod and the lower support rod are respectively provided with external threads that are threaded to the internal thread adjustment hole.

[0022] Furthermore, the mounting base is provided with a first support surface parallel to the first lower side wall and a second support surface perpendicular to the first support surface. The upper support rod is provided with an external thread at one end near the mounting base, and a locking nut is provided at the external thread. When the upper support rod rotates to be perpendicular to the first support surface, the locking nut is rotated to abut against the first support surface. When the upper support rod rotates to be perpendicular to the second support surface, the locking nut is rotated to abut against the second support surface.

[0023] This invention also provides a method for on-site fabrication of prefabricated secondary steel structures, which utilizes the aforementioned mobile factory for fabrication. The method includes:

[0024] Step 1: Move the mobile factory to the construction site, unfold the first upper sidewall and the first lower sidewall in a horizontal direction and fix the angle after unfolding. The first lower sidewall is unfolded to a horizontal state.

[0025] Step 2: Move the profile cutting equipment and the profile drilling equipment from the first station along the first guide rail to the second station and the third station at the second guide rail, respectively;

[0026] Step 3: Draw cutting positioning lines on the profile according to the design drawings, and cut the profile along the cutting positioning lines at the profile cutting equipment to form a profile blank;

[0027] Step 4: Mark the drilling positions on the profile blank according to the design drawings, and use the profile drilling equipment to process bolt mounting holes on the profile blank for subsequent assembly installation;

[0028] Step 5: Assemble the drilled profile accessories according to the design drawings. After assembly, use profile welding equipment to weld the profile splicing positions to form a prefabricated secondary steel structure.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] 1. The mobile factory of the present invention can realize the on-site processing of prefabricated secondary steel structures at the construction site, saving the time and economic costs of factory cooperation, factory processing and transportation, and helping to shorten the construction cycle.

[0031] 2. By setting up the first and second lower side walls that are flipped, the working space during use is increased. Cutting, drilling and welding profiles inside the box will result in relatively dense workstations, which will not only be inconvenient for construction, but may also cause mutual interference.

[0032] 3. By switching between the first and second workstations, and between the first and third workstations, the cutting and drilling operations are moved to the outside, which can meet the construction needs without the need for a customized box structure with a large space, and facilitates the folding up of the equipment and the arrangement of the construction status.

[0033] 4. The present invention realizes the transfer of profile blanks from the second station to the third station by setting up a third track and profile conveying device, eliminating the need for personnel to walk back and forth through the box for construction, which facilitates assembly line processing and improves processing efficiency.

[0034] 5. In addition, the third track allows for easy relocation of the profile conveying device, facilitating the transfer of profile cutting and drilling equipment to the first workstation and enabling convenient transportation within the mobile factory. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the mobile factory structure used for on-site processing of prefabricated secondary steel structures in this invention.

[0036] Figure 2 This is a schematic diagram of the arrangement of the first and second guide rails in this invention.

[0037] Figure 3 This is a schematic diagram of the support plate flipping into the second receiving groove in this invention.

[0038] Figure 4 This is a schematic diagram of the support plate being flipped and stored in the first receiving slot in this invention.

[0039] Figure 5 A schematic diagram of the support structure in this invention.

[0040] Figure 6 This is a schematic diagram of the unfolded first and second sidewalls in this invention.

[0041] Figure 7 This is a schematic diagram of the profile welding equipment in this invention.

[0042] In the picture:

[0043] 1. Profile cutting equipment; 2. Profile drilling equipment; 3. Profile welding equipment; 4. Top plate; 5. Bottom plate; 6. Support column; 7. First upper side wall; 8. First lower side wall; 9. Second left side wall; 10. Second right side wall; 11. First guide rail; 12. Second guide rail; 13. Bevel; 14. Support plate; 15. First receiving groove; 16. Second receiving groove; 17. Moving base; 18. Grooved guide rail roller; 19. Notch; 20. Third track; 21. Profile conveying device; 22. Moving base; 23. Moving support part; 24. Support part; 25. Upper support rod; 26. Lower support rod; 27. Mounting seat; 28. Connecting part; 29. ​​First support surface; 30. Second support surface; 31. Locking nut; 32. Welding robot; 33. Welding platform. Detailed Implementation

[0044] The technical solution of the present invention will be further described below with reference to specific embodiments:

[0045] A mobile factory for on-site fabrication of prefabricated secondary steel structures, such as Figure 1 As shown, it includes:

[0046] The box includes a rectangular box body, a profile cutting equipment 1, a profile drilling equipment 2, and a profile welding equipment 3; the box body includes a top plate 4, a bottom plate 5, and supporting columns 6 between the four corners of the top plate 4 and the bottom plate 5, and the top plate 4 and the bottom plate 5 are rectangular plate structures respectively.

[0047] First sidewalls are provided on both sides of the length of the box, and second sidewalls are provided on both sides of the width of the box;

[0048] The first sidewall includes a first upper sidewall 7 and a first lower sidewall 8. The first upper sidewall 7 is hinged to the edge of the top plate 4, and the first lower sidewall 8 is hinged to the edge of the bottom plate 5.

[0049] After the first upper sidewall 7 and the first lower sidewall 8 are flipped open in a relatively horizontal direction, the first upper sidewall 7 forms a top plate wing, the first lower sidewall 8 forms a bottom plate wing, and the upper surface of the first lower sidewall 8 is flush with the upper surface of the bottom plate 5.

[0050] In one embodiment, the first lower sidewall 8 is flipped open to a horizontal state, and the first upper sidewall 7 is also flipped to a horizontal state. The first lower sidewall 8 and the first upper sidewall 7 have the same width.

[0051] In another embodiment, the first lower sidewall 8 is flipped horizontally to a horizontal state, while the first upper sidewall 7 is flipped horizontally but not to a horizontal state, remaining tilted to facilitate the flow of rainwater along the top plate 4 and the first upper sidewall 7 to the outside of the mobile factory. The width of the first upper sidewall 7 is greater than the width of the first lower sidewall 8, ensuring that the tilted state of the first upper sidewall 7 can effectively shield the first lower sidewall 8. More specifically, the tilt angle of the first upper sidewall 7 relative to the horizontal plane is 5-15°.

[0052] In one embodiment, the unfolding and retraction of the first upper sidewall 7 and the first lower sidewall 8 can be achieved by a hydraulic rod, or they can be unfolded and retracted manually. The unfolded state is as follows: Figure 6 As shown; preferably, when the first upper sidewall and the first lower sidewall are unfolded, they can be supported by diagonal braces to ensure the unfolded state. When closed, the retracted state can be fixed by setting a pin.

[0053] As a preferred option, such as Figure 2 As shown, the second sidewall includes a second left sidewall 9 and a second right sidewall 10. The second left sidewall 9 and the second right sidewall 10 are respectively hinged to the support column 6, and the second left sidewall 9 and the second right sidewall 10 can be flipped open relative to the outside of the box.

[0054] A first guide rail 11 is provided at one end of the box body near its length, extending along the width of the box body. The first guide rail 11 is laid along one side of the width of the bottom plate 5 towards the other side of the width of the bottom plate. Corresponding to the extension direction of the first guide rail 11, a second guide rail 12 is laid on the first lower side wall 8. The first guide rail 11 and the second guide rail 12, respectively, are provided with bevels 13 not exceeding 45° at the ends of the first guide rail 11 and the bottom plate 5 near their hinged edges. Figure 3 and Figure 4 As shown;

[0055] The first guide rail 11 forms the first workstation for storing the profile cutting equipment and the profile drilling equipment in the box; after the first lower side wall 8 is flipped open in the horizontal direction relative to the bottom plate 5, the second guide rail 12 forms the second workstation for the profile cutting equipment 1 on one side of the first lower side wall 8, and the second guide rail 12 forms the third workstation for the profile drilling equipment 2 on the other side of the first lower side wall 8.

[0056] The profile welding equipment 3 is located on the bottom plate 5 inside the box.

[0057] More specifically, due to the bevel 13, the movable base may get stuck when transitioning between the first and second guide rails. Preferably, a support plate 14 is provided at the end of the second guide rail 12 near the first guide rail 11, which is hinged to the second guide rail 12. The second guide rail 12 has a first receiving groove 15 for accommodating the support plate 14. The first guide rail 11 has a second receiving groove 16 at the end near the second guide rail 12 corresponding to the support plate 14. After the support plate 14 is flipped outwards, it is housed in the first receiving groove 15. After the first lower sidewall 8 is flipped to a horizontal position, the support plate 14 is flipped towards the second receiving groove 16, and its free end crosses the bevel 13 at the ends of the first and second guide rails and is mounted in the second receiving groove 16. When the movable base moves along the first and second guide rails, the support plate 14 provides transitional support. When it is necessary to fold the first lower sidewall 8 vertically, the support plate 14 is flipped and housed in the first receiving groove 15.

[0058] The bottom of the profile cutting equipment and the bottom of the profile drilling equipment are respectively provided with a movable base 17. The movable base 17 is provided with a grooved guide roller 18 that cooperates with the first guide rail 11 and the second guide rail 12. The movable base 17 moves along the first guide rail 11 and the second guide rail 12 to realize the switching between the first station and the second station, as well as the switching between the first station and the third station.

[0059] Preferably, the side wall of the first receiving groove 15 is provided with a notch 19 for lifting the support plate 14 housed in the first receiving groove 15, so that the support plate 14 can be flipped over when it is in the first receiving groove 15.

[0060] To facilitate the transfer of profiles between the second and third workstations, a third track 20 is provided on the base plate 5 along a direction perpendicular to the first guide rail. The third track 20 is a grooved track, positioned below the first guide rail 11 and intersecting with it at a point where the first guide rail 11 is disconnected. The third track 20 is horizontally positioned along the length of the base plate 5. A profile conveying device 21 is also provided between the second and third workstations, with a slider or roller corresponding to the third track 20. The profile conveying device 21 can be a belt conveyor or a roller conveyor.

[0061] Preferably, the bottom of the profile welding equipment 3 is also provided with a movable base 22 that cooperates with the third track 20. The movable base 22 cooperates with the third track 20 via a slider or roller. The third track 20 is used to adjust the position of the profile welding equipment 3 and the profile conveying device 21, so as to facilitate the storage of the profile cutting equipment 1 and the profile drilling equipment 2 inside the housing.

[0062] Preferably, a movable support part 23 is provided at the bottom of the base plate 5, and a support part 24 is provided on the side of the first lower side wall 8 near the outer side of the box; after the first lower side wall 8 is flipped in the horizontal direction, it is supported by the support part 24 so that the first lower side wall 8 remains horizontal.

[0063] More specifically, the support part 24 includes an upper support rod 25 and a lower support rod 26. A mounting seat 27 is installed on the first lower side wall 8. One end of the upper support rod 25 is hinged to the mounting seat 27. A connecting part 28 is connected between the other end of the upper support rod 25 and one end of the lower support rod 26. The connecting part 28 is provided with an internal thread adjustment hole. The upper support rod 25 and the lower support rod 26 are respectively provided with external threads that are threadedly engaged with the internal thread adjustment hole.

[0064] As a preferred option, such as Figure 5 As shown, in order to achieve angle locking of the support, the mounting base 27 is provided with a first support surface 29 parallel to the first lower sidewall 8 and a second support surface 30 perpendicular to the first support surface 29. The upper support rod 25 is provided with an external thread at one end near the mounting base 27, and a locking nut 31 is provided at the external thread. When the first lower sidewall 8 is unfolded, the upper support rod 25 rotates to be perpendicular to the first support surface 29, and the locking nut 31 is rotated to abut against the first support surface 29. When the first lower sidewall 8 is retracted to a vertical state, the upper support rod 25 rotates to be perpendicular to the second support surface 30, and the locking nut 31 is rotated to abut against the second support surface 30.

[0065] As an alternative, insertion holes can also be provided on the bottom side of the housing to accommodate the forklift's forks, facilitating loading and unloading of the mobile factory.

[0066] Alternatively, a quality inspection module can be installed inside the enclosure, such as a welding quality flaw detector or a vision camera. The welding quality flaw detector is used to inspect the welding quality, and the vision camera is used to capture images of the shape and size after welding and compare them with the set shape and size to verify the accuracy and quality of the welding process.

[0067] More specifically, the profile welding equipment includes a welding platform 33 and a welding robot 32. The welding platform 33 is a multi-hole welding platform, and the welding robot is such as a YASKAWA welding robot. When a movable base 22 is provided, both the welding platform 33 and the welding robot 32 are mounted on the movable base 22. The profile cutting equipment is such as a saw blade metal cutting device, where the saw blade can be set parallel to the length direction of the base plate to facilitate the transfer of the cut profile for drilling; the profile drilling equipment is such as a benchtop drilling machine.

[0068] In one embodiment, in order to keep the profile cutting equipment, profile drilling equipment, and profile welding equipment stationary, a limiting measure can be added so that the movable base 17 stops on the first guide rail 11 or the second guide rail 12, and the movable base 22 stops on the third rail 20. The limiting measure can be such as adding a limiting hole at a specific work station, inserting a pin into the limiting hole to restrict movement, or adding a limiting hole on the side of the first guide rail and the second guide rail, so that the grooved guide rail roller 18 cannot continue to move after the pin is inserted, thus achieving the limiting effect.

[0069] This embodiment also provides a method for on-site fabrication of prefabricated secondary steel structures. This method utilizes the aforementioned mobile factory for fabrication and includes:

[0070] Step 1: Move the mobile factory to the construction site, unfold the first upper sidewall 7 and the first lower sidewall 8 in a horizontal direction and fix the angle after unfolding. It can be supported and fixed by diagonal bracing. The support position is connected by bolts. The first lower sidewall 8 is unfolded to a horizontal state.

[0071] Step 2: Move the profile cutting equipment 1 and the profile drilling equipment 2 from the first station along the first guide rail to the second station and the third station at the second guide rail, respectively. Figure 1 and Figure 7 As shown;

[0072] When the base plate is equipped with a profile conveying device 21, the profile conveying device 21 is moved along the third track between the profile cutting equipment and the profile drilling equipment;

[0073] Step 3: Draw cutting positioning lines on the profile according to the design drawings, and cut the profile along the cutting positioning lines at the profile cutting equipment to form a profile blank;

[0074] Step 4: Mark the drilling positions on the profile blank according to the design drawings, and use the profile drilling equipment to process bolt mounting holes on the profile blank for subsequent assembly installation;

[0075] Step 5: Assemble the drilled profile parts according to the design drawings, clamp and fix them on the welding platform, and weld the profile splicing positions using a welding robot to form a prefabricated secondary steel structure.

[0076] Furthermore, it should be noted that the mobile factory and method of the present invention can be used not only for processing secondary steel structures, but also for processing decorative panels and decorative components. This enables factory-quality processing on the construction site, facilitates better communication with on-site construction personnel, and improves production efficiency. Utilizing welding robots for welding operations helps improve processing quality and welding safety, while reducing human intervention.

[0077] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. Those skilled in the art can make non-inventive modifications to this embodiment as needed after reading this specification, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A mobile factory for on-site processing of prefabricated secondary steel structures, characterized in that, include: A rectangular box, profile cutting equipment, profile drilling equipment, and profile welding equipment; the box includes a top plate, a bottom plate, and supporting columns between the four corners of the top plate and the bottom plate, wherein the top plate and the bottom plate are respectively rectangular plate structures; First sidewalls are provided on both sides of the length of the box, and second sidewalls are provided on both sides of the width of the box; The first sidewall includes a first upper sidewall and a first lower sidewall. The first upper sidewall is hinged to the edge of the top plate, and the first lower sidewall is hinged to the edge of the bottom plate. After the first upper sidewall and the first lower sidewall are flipped open in a relatively horizontal direction, the first upper sidewall forms a top plate wing, the first lower sidewall forms a bottom plate wing, and the upper surface of the first lower sidewall is flush with the upper surface of the bottom plate. A first guide rail is provided at one end of the box body near its length, and is laid along the width direction of the box body. The first guide rail is laid along one side of the width of the bottom plate towards the other side of the width of the bottom plate. A second guide rail is laid on the first lower side wall corresponding to the extension direction of the first guide rail. The first guide rail and the second guide rail are respectively provided with a bevel of no more than 45° at the end of the first guide rail that is hinged to the edge of the bottom plate near the first lower side wall and the edge of the bottom plate. The first guide rail forms a first workstation for storing the profile cutting equipment and the profile drilling equipment in the box; after the first lower sidewall is flipped open in the horizontal direction relative to the bottom plate, the second guide rail forms a second workstation for the profile cutting equipment on one side of the first lower sidewall, and the second guide rail forms a third workstation for the profile drilling equipment on the other side of the first lower sidewall. The profile welding equipment is located on the bottom plate inside the box; The second guide rail has a support plate hinged to the first guide rail at one end. The second guide rail has a first receiving groove for accommodating the support plate. The first guide rail has a second receiving groove corresponding to the support plate at one end near the second guide rail. After the support plate is flipped outwards towards the outside of the housing, it is housed in the first receiving groove. After the first lower sidewall is flipped to a horizontal position, the support plate is flipped towards the second receiving groove, and the free end of the support plate crosses the bevel at the ends of the first and second guide rails and is mounted in the second receiving groove.

2. A mobile factory for on-site processing of prefabricated secondary steel structures according to claim 1, characterized in that, The bottom of the profile cutting equipment and the bottom of the profile drilling equipment are respectively provided with a movable base. The movable base is provided with grooved guide rollers that cooperate with the first guide rail and the second guide rail. The movable base moves along the first guide rail and the second guide rail to realize the switching between the first station and the second station, as well as the switching between the first station and the third station.

3. A mobile factory for on-site processing of prefabricated secondary steel structures according to claim 1, characterized in that, The side wall of the first receiving groove is provided with a notch for lifting the support plate housed in the first receiving groove.

4. A mobile factory for on-site processing of prefabricated secondary steel structures according to claim 2, characterized in that, A third track is also provided on the base plate in a direction perpendicular to the first guide rail. The third track is a grooved track. The grooved track is lower than the first guide rail and the first guide rail is disconnected at the position where the first guide rail and the third track intersect. The third track is horizontally arranged along the length of the base plate. A profile conveying device is also provided between the second and third workstations. The profile conveying device is provided with a slider or roller that cooperates with the third track.

5. A mobile factory for on-site processing of prefabricated secondary steel structures according to claim 4, characterized in that, The bottom of the profile welding equipment is also equipped with a movable base that cooperates with the third track. The movable base cooperates with the third track through a slider or roller.

6. A mobile factory for on-site processing of prefabricated secondary steel structures according to claim 1, characterized in that, The bottom of the base plate is also provided with a movable support part, and the first lower sidewall is provided with a support part on the side near the outer side of the box; after the first lower sidewall is flipped in the horizontal direction, it is supported by the support part below the first lower sidewall so that the first lower sidewall remains horizontal.

7. A mobile factory for on-site processing of prefabricated secondary steel structures according to claim 6, characterized in that, The support includes an upper support rod and a lower support rod. A mounting base is installed on the first lower sidewall. One end of the upper support rod is hinged to the mounting base. A connecting part is connected between the other end of the upper support rod and one end of the lower support rod. The connecting part is provided with an internal thread adjustment hole. The upper support rod and the lower support rod are respectively provided with external threads that are threadedly engaged with the internal thread adjustment hole.

8. A mobile factory for on-site processing of prefabricated secondary steel structures according to claim 7, characterized in that, The mounting base is provided with a first support surface parallel to the first lower side wall and a second support surface perpendicular to the first support surface. The upper support rod is provided with an external thread at one end near the mounting base, and a locking nut is provided at the external thread. When the upper support rod rotates to be perpendicular to the first support surface, the locking nut is rotated to abut against the first support surface. When the upper support rod rotates to be perpendicular to the second support surface, the locking nut is rotated to abut against the second support surface.

9. A method for on-site fabrication of prefabricated secondary steel structures, characterized in that, The method utilizes the mobile factory described in any one of claims 1-8 for processing, and the method includes: Step 1: Move the mobile factory to the construction site, unfold the first upper sidewall and the first lower sidewall in a horizontal direction and fix the angle after unfolding, and unfold the first lower sidewall to a horizontal state. Step 2: Move the profile cutting equipment and the profile drilling equipment from the first station along the first guide rail to the second station and the third station at the second guide rail, respectively; Step 3: Draw cutting positioning lines on the profile according to the design drawings, and cut the profile along the cutting positioning lines at the profile cutting equipment to form a profile blank; Step 4: Mark the drilling positions on the profile blank according to the design drawings, and use the profile drilling equipment to process bolt mounting holes on the profile blank for subsequent assembly installation; Step 5: Assemble the drilled profile accessories according to the design drawings. After assembly, use profile welding equipment to weld the profile splicing positions to form a prefabricated secondary steel structure.

Images