Mobile factory for on-site machining of assembly type secondary steel structure and machining method

Abstract

The invention relates to a mobile factory for field processing of an assembly type secondary steel structure and a processing method. The mobile factory comprises a box body; the box body comprises a top plate, a bottom plate, supporting stand columns, a first side wall and a second side wall. The first side wall comprises a first upper side wall and a first lower side wall which can be turned over to be opened; after the first upper side wall and the first lower side wall are overturned and opened relative to the horizontal direction, the first upper side wall forms a top plate wing plate, and the first lower side wall forms a bottom plate wing plate and is flush with the upper surface of the bottom plate; a first guide rail is laid on the bottom plate, a second guide rail is laid on the first lower side wall, and the first guide rail and the second guide rail are provided with grooves not larger than 45 degrees. The first guide rails respectively form first stations for storing the profile cutting equipment and the profile punching equipment in the box body; the second guide rail forms a second working station where the profile cutting equipment works and a third working station where the profile punching equipment works. According to the method, the fabricated secondary steel structure can be machined on site, time and economic cost are saved, and the construction period can be shortened.

Description

Technical Field

[0001] The present invention relates to the field of mobile factories, and in particular to a mobile factory and a processing method for on-site processing of assembled secondary steel structures. Background Art

[0002] In the construction industry, such as the building decoration industry, a large number of steel structures are often used. In order to improve construction efficiency and reduce construction difficulty, the concept of prefabricated construction has been proposed and widely used. Prefabricated construction often involves the prefabrication of secondary steel structures. In the prior art, the prefabrication of secondary steel structures is generally customized at the factory stage, and then transported in batches from the factory to the construction site after processing.

[0003] Due to the changes in construction projects, construction sites are constantly changing, and the disadvantages of factory customized processing are also more obvious. It takes a lot of time to cooperate with the factory, customize production, and transport. In addition, some processed secondary steel structures are prone to deformation and damage during transportation. They cannot be used after being transported to the site and need to be re-processed and transported 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, the prior art patent document with announcement number CN214724200U discloses a mobile factory for a construction site, which transports the mobile factory to the construction site to perform drilling, milling, bending, cutting, welding and manufacturing at the construction site. Summary of the invention

[0005] In order to improve the construction efficiency in the field of building decoration and shorten the construction period, the present invention provides a mobile factory and processing method for on-site processing of assembled secondary steel structures, which can realize on-site processing and transfer according to different construction projects.

[0006] The technical objectives of the present invention are achieved through the following technical solutions:

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

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

[0009] A first side wall is respectively arranged on both sides of the length of the box body, and a second side wall is respectively arranged on both sides of the width of the box body;

[0010] The first side wall comprises a first upper side wall and a first lower side wall, the first upper side wall is hingedly connected to the edge of the top plate, and the first lower side wall is hingedly connected to the edge of the bottom plate;

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

[0012] A first guide rail is provided in the box body at one end of the length of the box body, and is laid along one width side of the bottom plate toward the other width side 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, and a groove of no more than 45° is provided at one end of the first guide rail near the hinged end of the first lower side wall and the hinged end of the second guide rail near the hinged end of the first lower side wall and the bottom plate respectively;

[0013] The first guide rail forms a first workstation for storing the profile cutting equipment and the profile punching equipment in the box body; after the first lower side wall is flipped and opened in a horizontal direction relative to the bottom plate, the second guide rail forms a second workstation for the profile cutting equipment on the first lower side wall on one side, and the second guide rail forms a third workstation for the profile punching equipment on the first lower side wall on the other side;

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

[0015] Furthermore, a support plate hingedly connected to the second guide rail is provided at one end of the second guide rail close to the first guide rail, and the second guide rail is provided with a first receiving groove for receiving the support plate, and a second receiving groove is provided at an end of the first guide rail close to the second guide rail corresponding to the support plate, and the support plate is flipped toward the outside of the box and accommodated in the first receiving groove; after the first lower side wall is flipped toward a horizontal state, the support plate is flipped toward the second receiving groove and the free end of the support plate crosses the grooves at the ends of the first guide rail and the second guide rail and is mounted in the second receiving groove.

[0016] Furthermore, a mobile base is respectively provided at the bottom of the profile cutting equipment and the bottom of the profile punching equipment, and the mobile base is provided with a grooved guide rail roller that cooperates with the first guide rail and the second guide rail; the mobile base moves along the first guide rail and the second guide rail to realize the switching between the first workstation and the second workstation and the switching between the first workstation and the third workstation.

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

[0018] Furthermore, a third rail is arranged on the bottom plate in a direction perpendicular to the first guide rail. The third rail is a grooved rail. The grooved rail 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 rail are intertwined. The third rail is horizontally arranged along the length direction of the bottom plate. A profile conveying device is also arranged on the third rail between the second workstation and the third workstation. The profile conveying device is provided with a slider or roller corresponding to the third rail and cooperating with the third rail.

[0019] Furthermore, a movable base cooperating with the third track is also provided at the bottom of the profile welding equipment, and the movable base cooperates with the third track through a slider or a roller.

[0020] Furthermore, a movable support portion is provided at the bottom of the base plate, and a support portion is provided on the side of the first lower side wall close to the outer side of the box body; after the first lower side wall is flipped in the horizontal direction, it is supported under the first lower side wall by the support portion so that the first lower side wall 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 hingedly connected 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, and the upper support rod and the lower support rod are respectively provided with external threads that cooperate with the threads of the internal thread adjustment hole.

[0022] Furthermore, the mounting seat is provided with a first supporting surface parallel to the first lower side wall and a second supporting surface perpendicular to the first supporting surface. An end of the upper support rod close to the mounting seat is provided with an external thread, and a locking nut is provided at the external thread. When the upper support rod is rotated to be perpendicular to the first supporting surface, the locking nut is rotated to resist the first supporting surface. When the upper support rod is rotated to be perpendicular to the second supporting surface, the locking nut is rotated to resist the second supporting surface.

[0023] The present invention also provides a method for on-site processing of assembled secondary steel structures, which is processed by means of the above-mentioned mobile factory, and the method comprises:

[0024] Step 1: Move the mobile factory to the construction site, unfold the first upper side wall and the first lower side wall relative to the horizontal direction and fix the unfolded angle, and unfold the first lower side wall to a horizontal state;

[0025] Step 2, moving the profile cutting device and the profile punching device 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 a cutting positioning line on the profile according to the design drawing, and cut the profile along the cutting positioning line at the profile cutting equipment to form a profile blank;

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

[0028] Step 5: Assemble the punched profile accessories according to the design drawings. After assembly, use profile welding equipment to weld the profile joints to form an assembled secondary steel structure.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The mobile factory of the present invention can realize on-site processing of assembled secondary steel structures at the construction site, saving the time and economic costs of factory cooperation, factory processing, and transportation, which is conducive to shortening the construction period.

[0031] 2. The setting of the flipped first lower side wall and the second lower side wall increases the working space during use. Cutting, punching and welding of profiles in the box will result in relatively dense workstations, which is not convenient for construction on the one hand and may also affect each other on the other hand.

[0032] 3. The present invention moves the cutting and punching operation positions outward by switching between the first station and the second station, and between the first station and the third station. It can meet the construction needs without customizing a box structure with a larger space, and it is convenient to fold up the equipment and arrange the construction status.

[0033] 4. The present invention realizes the transfer of the profile blank from the second station to the third station by setting up the third track and the profile conveying device, without the need for personnel to go back and forth through the inside of the box for construction, which facilitates assembly line processing and improves processing efficiency.

[0034] 5. In addition, by setting up the third track, the profile transmission device can be easily shifted, so that the profile cutting equipment and profile punching equipment can be transferred to the first workstation, which is convenient for the transfer and transportation of the mobile factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a mobile factory used for on-site processing of assembled secondary steel structures in the present invention.

[0036] Figure 2 It is a schematic diagram of the arrangement of the first guide rail and the second guide rail in the present invention.

[0037] Figure 3 It is a schematic diagram of the supporting plate flipping over to the second containing groove in the present invention.

[0038] Figure 4 It is a schematic diagram of the support plate in the present invention being flipped and stored in the first receiving groove.

[0039] Figure 5 Schematic diagram of the support structure of the present invention.

[0040] Figure 6 It is a schematic diagram of the expansion of the first side wall and the second side wall in the present invention.

[0041] Figure 7 It is a schematic diagram of the profile welding equipment of the present invention.

[0042] In the figure:

[0043] 1. Profile cutting equipment; 2. Profile punching 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 accommodating groove; 16. Second accommodating groove; 17. Moving base; 18. Groove guide 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. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further described below in conjunction with specific embodiments:

[0045] A mobile plant for on-site processing of prefabricated secondary steel structures, such as Figure 1 As shown, including:

[0046] A rectangular box, a profile cutting device 1, a profile punching device 2 and a profile welding device 3; the box includes a top plate 4, a bottom plate 5, and support columns 6 supported 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 respectively rectangular plate structures;

[0047] A first side wall is respectively arranged on both sides of the length of the box body, and a second side wall is respectively arranged on both sides of the width of the box body;

[0048] The first side wall includes a first upper side wall 7 and a first lower side wall 8, the first upper side wall 7 is hingedly connected to the edge of the top plate 4, and the first lower side wall 8 is hingedly connected to the edge of the bottom plate 5;

[0049] After the first upper side wall 7 and the first lower side wall 8 are flipped open relative to the horizontal direction, the first upper side wall 7 forms a top plate wing, the first lower side wall 8 forms a bottom plate wing, and the upper surface of the first lower side wall 7 is flush with the upper surface of the bottom plate 5;

[0050] In one embodiment, the first lower side wall 8 is flipped in the horizontal direction to open to a horizontal state, and the first upper side wall 7 is also flipped to a horizontal state, and the first lower side wall 8 and the first upper side wall 7 have the same width;

[0051] In another embodiment, the first lower side wall 8 is flipped to a horizontal state in the horizontal direction, and the first upper side wall 7 is flipped to a horizontal state but not to a horizontal state, and is kept in an inclined state, so that rainwater and the like can flow to the outside of the mobile factory along the top plate 4 and the first upper side wall 7, and the width of the first upper side wall 7 is greater than the width of the first lower side wall 8, so as to ensure that the first upper side wall 7 can shield the first lower side wall 8 in an inclined state. More specifically, the first upper side wall plate 7 has an inclination angle of 5-15° relative to the horizontal plane.

[0052] In one embodiment, the first upper side wall 7 and the first lower side wall 8 can be unfolded and folded by a hydraulic rod, and can also be unfolded and folded manually. Figure 6 As shown; as a preference, when the first upper side wall and the first lower side wall are unfolded, they can also be supported by diagonal braces to ensure the unfolded state. After closing, the retracted state can be fixed by setting a latch.

[0053] As a preference, Figure 2 As shown, the second side wall includes a second left side wall 9 and a second right side wall 10, and the second left side wall 9 and the second right side wall 10 are respectively hingedly connected to the supporting column 6, and the second left side wall 9 and the second right side wall 10 can be flipped open relative to the outer side of the box body;

[0054] A first guide rail 11 is provided in the box body at one end near the length of the box body, and is laid along one width side of the bottom plate 5 toward the other width side of the bottom plate; a second guide rail 12 is laid on the first lower side wall 8 corresponding to the extension direction of the first guide rail 11, and a groove 13 not exceeding 45° is provided at one end of the first guide rail 11 near the hinged edge of the first lower side wall 8 and the hinged edge of the bottom plate 5, as well as at one end of the second guide rail 12 near the hinged edge of the first lower side wall 8 and the bottom plate 5. Figure 3 and Figure 4 As shown;

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

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

[0057] More specifically, due to the setting of the groove 13, the mobile base may get stuck when the first guide rail and the second guide rail transition. Preferably, a support plate 14 hingedly connected to the second guide rail 12 is provided at one end of the second guide rail 12 close to the first guide rail 11, and the second guide rail 12 is provided with a first receiving groove 15 for receiving the support plate 14. The first guide rail 11 is provided with a second receiving groove 16 corresponding to the support plate 14 at one end close to the second guide rail 12. The support plate 14 is flipped toward the outside of the box and stored in the first receiving groove 15. After the first lower side wall 8 is flipped toward the horizontal state, the support plate 14 is flipped toward the second receiving groove 16, and the free end of the support plate 14 crosses the groove 13 at the end of the first guide rail 11 and the second guide rail 12 and is carried in the second receiving groove 16. When the mobile base moves along the first guide rail and the second guide rail, the support plate 14 plays a role of transition support. When the first lower side wall 8 needs to be retracted in the vertical direction, the support plate 14 is flipped and stored in the first receiving groove 15.

[0058] A movable base 17 is respectively provided at the bottom of the profile cutting equipment and the bottom of the profile punching equipment. 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 workstation and the second workstation and the switching between the first workstation and the third workstation.

[0059] Preferably, a notch 19 is provided on the side wall of the first receiving groove 15 for lifting the support plate 14 received in the first receiving groove 15 , so as to facilitate flipping of the support plate 14 in the first receiving groove 15 .

[0060] In order to facilitate the transfer of profiles between the second station and the third station, a third track 20 is further provided on the bottom plate 5 in a direction perpendicular to the first guide rail. The third track 20 is a groove track, which is lower than the first guide rail 11 and disconnects the first guide rail 11 at the position where the first guide rail 11 and the third track 20 intersect. The third track 20 is horizontally arranged along the length direction of the bottom plate 5. A profile conveying device 21 is further arranged between the second station and the third station. The profile conveying device 21 is provided with a slider or roller matching the third track corresponding to the third track 20. The profile conveying device 21 is such as a belt conveyor device or a roller conveyor device.

[0061] Preferably, a movable base 22 cooperating with the third track 20 is further provided at the bottom of the profile welding device 3, and the movable base 22 cooperates with the third track 20 through a slider or a roller. The position adjustment of the profile welding device 3 and the profile conveying device 21 is realized through the third track 20, so as to facilitate the storage of the profile cutting device 1 and the profile punching device 2 in the box.

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

[0063] More specifically, the support portion 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 hingedly connected to the mounting seat 27. A connecting portion 28 is connected between the other end of the upper support rod 25 and one end of the lower support rod 26. The connecting portion 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 cooperate with the threads of the internal thread adjustment hole.

[0064] As a preference, Figure 5 As shown, in order to achieve angle locking of the support part, the mounting seat 27 is provided with a first supporting surface 29 parallel to the first lower side wall 8 and a second supporting surface 30 perpendicular to the first supporting surface 29. The upper support rod 25 is provided with an external thread at one end close to the mounting seat 27, and a locking nut 31 is provided at the external thread. When the first lower side wall 8 is unfolded, the upper support rod 25 is rotated to be perpendicular to the first supporting surface 29 and the locking nut 31 is rotated to resist the first supporting surface 29. When the first lower side wall 8 is folded to a vertical state, the upper support rod 25 is rotated to be perpendicular to the second supporting surface 30 and the locking nut 31 is rotated to resist the second supporting surface 30.

[0065] Preferably, a socket may be provided on the bottom side of the box body to cooperate with the fork arm of a forklift to facilitate loading and transporting the mobile factory.

[0066] Preferably, a quality inspection module can also be set in the box, such as a welding quality flaw detector and a visual camera. The welding quality can be inspected by the welding quality flaw detector, and the shape and size after welding can be captured by the visual camera and compared with the set shape and size to check the accuracy quality after welding.

[0067] More specifically, the profile welding equipment includes a welding platform 31 and a welding robot 32. The welding platform is a multi-hole welding platform, and the welding robot is a YASKAWA welding robot. When a mobile base 22 is configured, the welding platform 31 and the welding robot are both installed on the mobile base 22. The profile cutting equipment is a saw blade type metal cutting equipment, and the saw blade can be arranged parallel to the length direction of the bottom plate to facilitate the transfer of the cut profile for punching. The profile punching equipment is a desktop punching drill.

[0068] In one embodiment, in order to keep the profile cutting equipment, profile punching equipment, and profile welding equipment stationary at the work station, limiting measures can be added to make the movable base 17 stay on the first guide rail 11 or the second guide rail 12, and the movable base 22 stay on the third rail 20. The limiting measures include adding limiting holes at specific work stations, inserting pins into the limiting holes, and limiting movement. For example, limiting holes are added to the sides of the first guide rail and the second guide rail, and the grooved guide roller 18 cannot continue to move after the pins are inserted, thereby achieving a limiting effect.

[0069] This embodiment also provides a method for on-site processing of assembled secondary steel structures, which is processed by means of the above-mentioned mobile factory, and includes:

[0070] Step 1, move the mobile factory to the construction site, unfold the first upper side wall 7 and the first lower side wall 8 relative to the horizontal direction and fix the unfolded angle, which can be supported and fixed by diagonal braces, and the supporting position is connected by bolts, and the first lower side wall 8 is unfolded to a horizontal state;

[0071] Step 2: Move the profile cutting device 1 and the profile punching device 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 bottom plate is provided with a profile conveying device 21, the profile conveying device 21 is moved along the third track to between the profile cutting device and the profile punching device;

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

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

[0075] Step 5: Assemble the punched profile accessories according to the design drawings. After assembly, clamp and fix them on the welding platform. Use the welding robot to weld the profile joints to form an assembled secondary steel structure.

[0076] In addition, it should be noted that the mobile factory and method of the present invention can be used for processing of decorative plates and decorative components in addition to processing of secondary steel structures. In addition to achieving factory-like processing quality at the construction site, it can also better communicate with on-site construction personnel and improve production efficiency. Using welding robots for welding operations is conducive to improving processing quality and welding safety, and reducing human involvement.

[0077] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A mobile factory for on-site processing of assembled secondary steel structures, characterized in that: include: A rectangular box, a profile cutting device, a profile punching device and a profile welding device; the box comprises a top plate, a bottom plate, and supporting columns supported between the four corners of the top plate and the bottom plate, and the top plate and the bottom plate are respectively rectangular plate structures; First side walls are respectively arranged on both sides of the length of the box body, and second side walls are respectively arranged on both sides of the width of the box body; The first side wall comprises a first upper side wall and a first lower side wall, the first upper side wall is hingedly connected to the edge of the top plate, and the first lower side wall is hingedly connected to the edge of the bottom plate; After the first upper side wall and the first lower side wall are flipped open relative to the horizontal direction, the first upper side wall forms a top plate wing plate, the first lower side wall forms a bottom plate wing plate, and the upper surface of the first lower side wall is flush with the upper surface of the bottom plate; A first guide rail arranged along the width direction of the box body is arranged in the box body at one end close to the length of the box body, and the first guide rail is laid along one width side of the bottom plate toward the other width side 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, and a groove not exceeding 45° is respectively arranged at one end of the first guide rail close to the hinged end of the first lower side wall and the hinged end of the second guide rail close to the hinged end of the first lower side wall and the bottom plate; The first guide rails form first workstations for storing profile cutting equipment and profile punching equipment in the box body; after the first lower side wall is flipped and opened in a horizontal direction relative to the bottom plate, the second guide rail forms a second workstation for the profile cutting equipment on the first lower side wall on one side, and the second guide rail forms a third workstation for the profile punching equipment on the first lower side wall on the other side; The profile welding equipment is located on the bottom plate in the box.

2. A mobile factory for on-site processing of assembled secondary steel structures according to claim 1, characterized in that: A support plate hingedly connected to the second guide rail is provided at one end of the second guide rail close to the first guide rail, the second guide rail is provided with a first receiving groove for receiving the support plate, and a second receiving groove is provided at an end of the first guide rail close to the second guide rail corresponding to the support plate, and the support plate is flipped toward the outside of the box and accommodated in the first receiving groove; after the first lower side wall is flipped toward a horizontal state, the support plate is flipped toward the second receiving groove and the free end of the support plate crosses the grooves at the ends of the first guide rail and the second guide rail and is mounted in the second receiving groove.

3. A mobile factory for on-site processing of assembled secondary steel structures according to claim 2, characterized in that: A movable base is respectively provided at the bottom of the profile cutting device and the bottom of the profile punching device, and the movable base is provided with a grooved guide rail roller that cooperates 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 workstation and the second workstation and the switching between the first workstation and the third workstation.

4. A mobile factory for on-site processing of assembled secondary steel structures according to claim 2, characterized in that: The side wall of the first accommodating groove is provided with a notch for lifting the supporting plate received in the first accommodating groove.

5. A mobile factory for on-site processing of assembled secondary steel structures according to claim 3, characterized in that: A third track is also arranged on the bottom plate in a direction perpendicular to the first guide rail, the third track is a groove track, the groove 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 are staggered; the third track is horizontally arranged along the length direction of the bottom plate, and a profile conveying device is also arranged on the third track between the second station and the third station, and the profile conveying device is provided with a slider or roller corresponding to the third track that cooperates with the third track.

6. A mobile factory for on-site processing of assembled secondary steel structures according to claim 5, characterized in that: A movable base matched with the third track is also arranged at the bottom of the profile welding equipment, and the movable base is matched with the third track through a slider or a roller.

7. A mobile factory for on-site processing of assembled secondary steel structures according to claim 1, characterized in that: A movable support portion is also provided at the bottom of the bottom plate, and a support portion is provided on the side of the first lower side wall close to the outer side of the box body; after the first lower side wall is flipped in the horizontal direction, it is supported below the first lower side wall by the support portion so that the first lower side wall remains horizontal.

8. A mobile factory for on-site processing of assembled secondary steel structures according to claim 7, characterized in that: 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 hingedly connected 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, and the upper support rod and the lower support rod are respectively provided with external threads that cooperate with the internal thread adjustment hole.

9. A mobile factory for on-site processing of assembled secondary steel structures according to claim 8, characterized in that: The mounting seat is provided with a first supporting surface parallel to the first lower side wall and a second supporting surface perpendicular to the first supporting surface. The upper support rod is provided with an external thread at one end close to the mounting seat, and a locking nut is provided at the external thread. When the upper support rod is rotated to be perpendicular to the first supporting surface, the locking nut is rotated to resist the first supporting surface. When the upper support rod is rotated to be perpendicular to the second supporting surface, the locking nut is rotated to resist the second supporting surface.

10. A method for on-site processing of assembled secondary steel structures, characterized in that: The method is processed by means of a mobile factory according to any one of claims 1 to 9, and the method comprises: Step 1, moving the mobile factory to the construction site, unfolding the first upper side wall and the first lower side wall relative to the horizontal direction and fixing the unfolded angles, and unfolding the first lower side wall to a horizontal state; Step 2, moving the profile cutting device and the profile punching device 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 a cutting positioning line on the profile according to the design drawing, and cut the profile along the cutting positioning line at the profile cutting equipment to form a profile blank; Step 4: Mark the punching positions on the profile blank according to the design drawings, and use the profile punching equipment to process the bolt installation holes on the profile blank for subsequent assembly installation; Step 5: Assemble the punched profile accessories according to the design drawings. After assembly, use profile welding equipment to weld the profile joints to form an assembled secondary steel structure.

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