Prefabricated comprehensive rod cross arm seat and manufacturing method

Abstract

The invention belongs to the technical field of comprehensive rod manufacturing, and discloses a preassembled type comprehensive rod cross arm seat and a manufacturing method.The preassembled type comprehensive rod cross arm seat comprises a main body framework and a skin plate, the main body framework can be spliced and preassembled before welding, and the main body framework comprises a flange plate which is a rectangular flat plate, a plurality of threaded holes connected with the cross arm are symmetrically formed in the two sides of the flange plate, a threading hole for a cable to penetrate through is formed in the middle of the flange plate, and four longitudinal rib inserting holes I for inserting longitudinal rib plates II are formed in the two sides of the flange plate; the two loop bar plates are arranged at the upper end and the lower end of the flange plate in parallel, and the loop bar plates are perpendicular to the flange plate; a second longitudinal rib inserting hole connected with the second longitudinal rib plate in an inserted mode is formed in the end, facing the flange plate, of the loop bar plate. The first longitudinal rib plate is parallel to the second longitudinal rib plate, and the first longitudinal rib plate is connected between the two loop bar plates in an inserted mode and deviates from one side of the flange plate. According to the invention, each part is temporarily fixed before welding by adopting a preassembling mode, so that the positioning error is reduced, and the manpower is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated pole manufacturing, and particularly to a prefabricated integrated pole cross-arm seat and a manufacturing method thereof. Background Art

[0002] Urban integrated poles, also known as "multi-functional intelligent poles" or "smart street lights", are modern municipal infrastructure integrating multiple urban functions. Through the design concept of "combining multiple poles into one", they optimize urban space resources, improve management efficiency, and contribute to the construction of smart cities. They mainly integrate: lighting function, LED intelligent street lights, supporting remote dimming, fault monitoring, and energy-saving control. Communication equipment: equipped with 5G micro base stations and Wi-Fi hotspots to improve network coverage. Security monitoring: integrated cameras and emergency alarm buttons, supporting face recognition and traffic violation capture. Environmental monitoring: detecting data such as air quality, temperature, humidity, and noise. Traffic management: integrating traffic lights, electronic road signs, and vehicle-road coordination equipment. Convenience services: providing charging piles, information screens, broadcast systems, etc.

[0003] The cross-arm is an essential part of urban integrated poles, which can provide installation space and support for various devices used in urban roads, facilitating the operation of various equipment at the top of urban roads. The cross-arm seat is the part connecting the vertical pole body and the cross-arm, bearing the weight of the cross-arm, and is a very important component. The cross-arm seat is sleeved on the vertical pole body and is provided with a flange plate for connecting the cross-arm on one side. However, the existing cross-arm seats are all welded and formed by parts such as connecting plates and collar rings. During the welding process, it is necessary to first mark lines on each part according to the drawings, and then align them together according to the marked positions. One person holds two parts by hand, and the other person uses electric welding to spot-weld and temporarily fix them. The cross-arm seats processed in this way often have poor dimensional accuracy, and errors are prone to occur during the marking process, resulting in a reduction in the product yield.

[0004] In order to overcome the above problems, a prefabricated integrated pole cross-arm seat and a manufacturing method thereof are needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a prefabricated integrated pole cross-arm seat and a manufacturing method thereof, which adopt a prefabrication method to temporarily fix each part before welding, reducing positioning errors and saving labor.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: A prefabricated integrated pole cross-arm seat of the present invention includes a main body framework and a skin plate. The main body framework can be pre-assembled by splicing before welding. The main body framework includes: A flange plate, which is a rectangular flat plate, symmetrically provided with a plurality of threaded holes for connecting the cross-arm on both sides, and a wire passing hole for passing through the cable in the middle. Four longitudinal bar insertion holes for inserting the second longitudinal bar plate are provided on both sides of the flange plate; Rod sleeve plates, two of which are arranged in parallel at the upper and lower ends of the flange plate, and the rod sleeve plates are arranged perpendicular to the flange plate; a rod sleeve hole sleeved on the vertical rod body is provided in the middle of the rod sleeve plate, and a longitudinal rib insertion hole 2 is provided at one end of the rod sleeve plate facing the flange plate to be inserted into the longitudinal rib plate 2; The first longitudinal rib plate is arranged parallel to the second longitudinal rib plate, and the first longitudinal rib plate is inserted between the two sleeve rod plates and faces away from the side of the flange plate.

[0007] Furthermore, it also includes a sleeve rod ring pad, which is inserted into the sleeve rod hole, and the inner wall of the sleeve rod ring pad contacts the outer wall of the vertical rod body; the sleeve rod ring pad is formed by bending a whole steel strip.

[0008] Furthermore, the outer wall of the sleeve rod ring pad is in contact with the longitudinal rib plate 1 and the longitudinal rib plate 2.

[0009] Furthermore, plugs are provided at both ends of the longitudinal rib plate, a longitudinal rib slot is provided in the center of the top of the sleeve rod plate, and the plug is inserted into the longitudinal rib slot.

[0010] Furthermore, a plug 2 is provided on the bottom surface of the longitudinal reinforcement plate 2, and plugs 3 are provided on both end surfaces, the plug 2 is inserted into the longitudinal reinforcement socket 1, and the plug 3 is plugged into the longitudinal reinforcement socket 2.

[0011] Furthermore, it also includes angle rib plates, which are multiple in number and symmetrically arranged on the outer sides of the two longitudinal rib plates and connected to the flange plate.

[0012] Furthermore, a plug four is arranged on the end surface of the angle rib plate facing the flange plate, and a plug five is arranged on the end surface of the angle rib plate facing the longitudinal rib plate two; the flange plate is provided with a longitudinal rib insertion hole one at the position of the plug four, and the top surface of the longitudinal rib plate two is provided with an angle rib slot for accommodating the plug five.

[0013] The present invention also discloses a method for manufacturing a preassembled integrated rod cross arm seat. The method for manufacturing any of the above-mentioned preassembled integrated rod cross arm seats comprises the following steps: Step 1: Use a laser cutting machine or a CNC plasma cutting machine to process the flange plate, sleeve rod plate, longitudinal rib plate 1 and longitudinal rib plate 2 with tenons and mortises, remove contour burrs and mortise burrs, and process threaded holes on the flange plate; Step 2: assembling: assembling a set of flange plates, sleeve rod plates, longitudinal rib plates 1 and 2 on a welding platform to form the main frame; Step 3: spot welding: using an electric welder to spot weld each weld to temporarily fix the main frame; Step 4: Full welding, symmetrical welding, welding each weld to complete the main frame welding; Step Five: Weld or use screws to install the skin plate.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows: For the prefabricated integrated pole cross-arm seat of the present invention, by using the flange plate, sleeve rod plate, longitudinal rib plate I and longitudinal rib plate II connected by a plug-in structure, the assembly of the main body skeleton can be completed like building blocks before welding, without the need for additional scribing or the support of personnel. Moreover, by adding one longitudinal rib plate I and two longitudinal rib plates II between the two sleeve rod plates, the self-strength of the main body skeleton after forming is increased, and there is sufficient strength to support the cross-arm. The prefabricated integrated pole cross-arm seat of the present invention uses a prefabrication method to temporarily fix each part before welding, reducing positioning errors and saving manpower.

[0015] In addition, by adding a sleeve rod ring backing plate to contact the outer wall of the vertical rod, the contact area between the two is increased, the contact pressure is reduced, and the situation of bruising the outer wall of the vertical rod is avoided. By setting the sleeve rod ring backing plate to contact the longitudinal rib plate I and the longitudinal rib plate II respectively, new short welds are formed, which can increase the supporting effect on the sleeve rod ring backing plate. Through the reasonable setting of the plug and the slot, the installation of the longitudinal rib plate I and the longitudinal rib plate II can be quickly achieved in place. By adding an angle rib plate between the longitudinal rib plate II and the flange plate, the connection strength between the two is improved; by setting plug structures at two places on the angle rib plate to connect the flange plate and the longitudinal rib plate II respectively, the quick assembly of the angle rib plate in place is realized.

[0016] For the manufacturing method of the prefabricated integrated pole cross-arm seat of the present invention, by using a numerical control device to cut the outer contours and mortises of each component, the assembly accuracy can be guaranteed while greatly reducing the processing cost; by assembling the main body skeleton in a prefabrication manner, the errors easily generated by the scribing method are avoided, and the positioning quality of each component is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the prefabricated integrated pole cross-arm seat of the present invention; Figure 2 It is a front view structural schematic diagram of the prefabricated integrated pole cross-arm seat of the present invention; Figure 3 It is a top view structural schematic diagram of the prefabricated integrated pole cross-arm seat of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the flange plate in the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the longitudinal rib plate II in the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the angle rib plate in the present invention.

[0019] Description of the reference numerals: 1. Flange plate; 101. Threaded hole; 102. Wire passing hole; 103. First longitudinal bar inserting hole; 104. First corner bar inserting hole; 2. Sleeve rod plate; 201. Sleeve rod hole; 202. Longitudinal bar slot; 203. Second longitudinal bar inserting hole; 3. Sleeve rod ring backing plate; 4. First longitudinal bar plate; 401. First plug; 5. Second longitudinal bar plate; 501. Second plug; 502. Third plug; 503. Corner bar slot; 6. Corner bar plate; 601. Fourth plug; 602. Fifth plug. Detailed implementation manners

[0020] The core of the present invention is to provide a prefabricated integrated pole cross-arm seat and a manufacturing method, which adopt a prefabrication method to temporarily fix each part before welding, reducing positioning errors and saving manpower.

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0023] Referring to the accompanying drawings, Figure 1 is a three-dimensional structural schematic diagram of the prefabricated integrated pole cross-arm seat of the present invention; Figure 2 is a front view structural schematic diagram of the prefabricated integrated pole cross-arm seat of the present invention; Figure 3 is a top view structural schematic diagram of the prefabricated integrated pole cross-arm seat of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the flange plate in the present invention; Figure 5 is a three-dimensional structural schematic diagram of the second longitudinal bar plate in the present invention; Figure 6 is a three-dimensional structural schematic diagram of the corner bar plate in the present invention.

[0024] In a specific implementation manner, as Figures 1 to 6 shown, the prefabricated integrated pole cross-arm seat of the present invention includes a main body skeleton and a skin plate, and the main body skeleton can be pre-assembled by splicing before welding. The main body skeleton includes: The flange plate 1 is a rectangular flat steel plate, with multiple threaded holes 101 for connecting the cross arms symmetrically opened on both sides, that is, the threaded holes 101 are arranged in two rows extending along the vertical rod body direction of the integrated pole. A threading hole 102 for passing the cable is opened in the middle of the flange plate 1, and the threading hole 102 is a round hole. Four longitudinal reinforcement insertion holes 103 for inserting the longitudinal reinforcement plate 2 5 are opened on both sides of the flange plate 1, and the two longitudinal reinforcement plates 2 5 are symmetrically arranged about the center line.

[0025] The two rod sleeve plates 2 are arranged parallel to the upper and lower ends of the flange plate 1, and the rod sleeve plates 2 are arranged perpendicular to the flange plate 1. The rod sleeve holes 201 are arranged in the middle of the rod sleeve plates 2 to be sleeved on the vertical rod body. The vertical rod body is generally a prism rod, and the rod sleeve holes 201 are also correspondingly regular prism-shaped holes. The rod sleeve plates 2 are arranged at one end facing the flange plate 1 with the longitudinal reinforcement insertion holes 203 inserted into the longitudinal reinforcement plates 2 5.

[0026] The longitudinal rib plate 1 4 is arranged parallel to the longitudinal rib plate 2 5 . The number of the longitudinal rib plate 1 4 is one. The longitudinal rib plate 1 4 is inserted between the two sleeve rod plates 2 and on the side away from the flange plate 1 .

[0027] By adopting the plug-in structure to connect the flange plate 1, the sleeve rod plate 2, the longitudinal rib plate 1 4 and the longitudinal rib plate 2 5, the main frame can be assembled like building blocks before welding, without the need for additional marking and without the need for personnel support. Moreover, by adding a longitudinal rib plate 1 4 and two longitudinal rib plates 2 5 between the two sleeve rod plates 2, the self-strength of the main frame after forming is increased, and there is sufficient strength to support the cross arm. The preassembled integrated rod cross arm seat of the present invention uses a preassembled method to temporarily fix each part before welding, which reduces positioning errors and saves manpower.

[0028] In a specific embodiment of the present invention, Figures 1 to 3 As shown, the main frame also includes a rod sleeve ring pad 3, which is inserted into the rod sleeve hole 201, and the inner wall of the rod sleeve ring pad 3 contacts the outer wall of the vertical rod. The rod sleeve ring pad 3 is formed by bending a whole steel strip.

[0029] Specifically, if Figure 1 As shown, the sleeve rod ring plate 3 is inserted into the inner side of the sleeve rod hole 201, that is, the end face of the sleeve rod ring plate 3 does not protrude from the outer wall of the sleeve rod plate 2, and a new ring weld is formed between the two. Moreover, the neat end face is convenient for using a clamp to position it at a suitable height on the vertical rod body.

[0030] Specifically, if Figures 1 to 3 As shown, the outer wall of the sleeve rod ring pad 3 is in contact with the bottom surface of the longitudinal rib plate 1 4 and the top surface of the longitudinal rib plate 2 5.

[0031] By adding a sleeve rod ring backing plate 3 in contact with the outer wall of the vertical rod, the contact area between the two is increased, the contact pressure is reduced, and the situation of bruising the outer wall of the vertical rod is avoided. By arranging the sleeve rod ring backing plate 3 in contact with the first longitudinal rib plate 4 and the second longitudinal rib plate 5 respectively to form new short welds, the supporting effect on the sleeve rod ring backing plate 3 can be increased.

[0032] In a specific embodiment of the present invention, as Figures 1 to 3 shown, plug one 401 is provided at both ends of the first longitudinal rib plate 4, and a longitudinal rib slot 202 is centrally opened at the top of the sleeve rod plate 2, and plug one 401 is inserted into longitudinal rib slot 202.

[0033] Specifically, as Figures 1 to 5 shown, plug two 501 is provided on the bottom surface of the second longitudinal rib plate 5, and plug three 502 is provided on both end surfaces. Plug two 501 is inserted into the first longitudinal rib hole 103, and plug three 502 is inserted into the second longitudinal rib hole 203.

[0034] Specifically, plug one 401, plug two 501 and plug three 502 are all rectangular plug structures, and the first longitudinal rib hole 103, longitudinal rib slot 202 and longitudinal rib slot 202 are all slot structures with rectangular cross-sections.

[0035] Through the reasonable setting of the plug and the slot, the installation of the first longitudinal rib plate 4 and the second longitudinal rib plate 5 in place can be quickly realized.

[0036] In a specific embodiment of the present invention, as Figures 1 to 6 shown, the prefabricated integrated pole cross-arm seat of the present invention further includes angle rib plates 6. The number of angle rib plates 6 is multiple and they are symmetrically arranged outside the two second longitudinal rib plates 5 and connected to the flange plate 1. The multiple angle rib plates 6 are arranged at equal intervals along the length direction of the second longitudinal rib plate 5.

[0037] Specifically, as Figures 1 to 6 shown, plug four 601 is provided on the end surface of the angle rib plate 6 facing the flange plate 1, and plug five 602 is provided on the end surface of the angle rib plate 6 facing the second longitudinal rib plate 5. The flange plate 1 is provided with the first longitudinal rib hole 103 at the position of plug four 601, and the top surface of the second longitudinal rib plate 5 is provided with an angle rib slot 503 for accommodating plug five 602.

[0038] By adding angle rib plates 6 between the second longitudinal rib plate 5 and the flange plate 1, the connection strength between the two is improved; by arranging plug structures at two places on the angle rib plate 6 to connect the flange plate 1 and the second longitudinal rib plate 5 respectively, the quick assembly of the angle rib plate 6 in place is realized.

[0039] In summary, for the prefabricated integrated pole cross-arm seat of the present invention, by using the flange plate 1, sleeve plate 2, first longitudinal bar plate 4, and second longitudinal bar plate 5 connected by a plug-in structure, the assembly of the main body framework can be completed like building blocks before welding, without the need for additional scribing or the support of personnel. Moreover, by adding one first longitudinal bar plate 4 and two second longitudinal bar plate 5s between the two sleeve plates 2, the self-strength of the formed main body framework is increased, providing sufficient strength to support the cross-arm. For the prefabricated integrated pole cross-arm seat of the present invention, the prefabrication method is adopted to temporarily fix each part before welding, reducing positioning errors and saving manpower. In addition, by adding a sleeve ring backing plate 3 to contact the outer wall of the vertical rod, the contact area between the two is increased, the contact pressure is reduced, and the situation of bruising the outer wall of the vertical rod is avoided. By setting the sleeve ring backing plate 3 to contact the first longitudinal bar plate 4 and the second longitudinal bar plate 5 respectively, new short welds are formed, which can increase the supporting effect on the sleeve ring backing plate 3. Through the reasonable setting of the plug and the slot, the installation of the first longitudinal bar plate 4 and the second longitudinal bar plate 5 can be quickly achieved in place. By adding an angle bar plate 6 between the second longitudinal bar plate 5 and the flange plate 1, the connection strength between the two is improved; by setting plug structures at two places on the angle bar plate 6 to connect the flange plate 1 and the second longitudinal bar plate 5 respectively, the quick assembly of the angle bar plate 6 in place is realized.

[0040] The present invention also discloses a manufacturing method for a prefabricated integrated pole cross-arm seat. To manufacture the prefabricated integrated pole cross-arm seat in any of the above embodiments, the following steps are included: Step 1: Use a laser cutting machine or a numerical control plasma cutting machine to process the blanks of the flange plate 1, sleeve plate 2, first longitudinal bar plate 4, second longitudinal bar plate 5, and also the sleeve ring backing plate 3 and the angle bar plate 6 with tenons and mortises. Remove the contour burrs and mortise burrs, machine the threaded holes 101 on the flange plate 1, and bend the blank of the sleeve ring backing plate 3 into shape.

[0041] Step 2: Assembly. On the welding platform, insert and assemble a set of flange plate 1, sleeve plate 2, first longitudinal bar plate 4, second longitudinal bar plate 5, and angle bar plate 6 into the main body framework, and insert the sleeve ring backing plate 3 into the sleeve hole 201 from the inside. During assembly, first place the flange plate 1 flat on the welding platform, insert the second longitudinal bar plate 5, insert the sleeve plate 2, insert the sleeve ring backing plate 3, and then insert the second longitudinal bar plate 5 again. Finally, insert the angle bar plates 6 one by one.

[0042] Step 3: Spot welding. Use an electric welding machine to spot weld at each weld to temporarily fix the main body framework.

[0043] Step 4: Full welding. Weld symmetrically to complete the welding of the main body framework by welding each weld.

[0044] Step 5: Weld or install the skin plate using screws. The skin plate covers and seals the peripheral side except for the flange plate 1.

[0045] Manufacturing method of prefabricated integrated pole cross-arm seat of the present invention. By using numerical control equipment to cut the outer contours and mortises of each component, it can ensure the assembly accuracy while greatly reducing the processing cost. By assembling the main body skeleton in a prefabricated manner, it avoids the errors easily generated by the scribing method and improves the positioning quality of each component.

[0046] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0047] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A preassembled integrated rod cross arm seat, characterized in that: It includes a main frame and a skin plate. The main frame can be pre-assembled before welding. The main frame includes: The flange plate (1) is a rectangular flat plate, with multiple threaded holes (101) for connecting the cross arms symmetrically formed on both sides, a threading hole (102) for passing the cable through formed in the middle, and four longitudinal rib insertion holes (103) for inserting the longitudinal rib plate (5) formed on both sides of the flange plate (1); Rod sleeve plates (2), two of the rod sleeve plates (2) are arranged in parallel at the upper and lower ends of the flange plate (1), and the rod sleeve plates (2) are arranged perpendicular to the flange plate (1); a rod sleeve hole (201) sleeved on the vertical rod body is provided in the middle of the rod sleeve plate (2), and a longitudinal reinforcement insertion hole (203) for inserting into the longitudinal reinforcement plate (5) is provided at one end of the rod sleeve plate (2) facing the flange plate (1); The longitudinal rib plate one (4) is arranged parallel to the longitudinal rib plate two (5), and the longitudinal rib plate one (4) is inserted between the two sleeve rod plates (2) and on a side facing away from the flange plate (1).

2. The preassembled integrated rod cross arm seat according to claim 1, characterized in that: It also comprises a sleeve rod ring pad (3), the sleeve rod ring pad (3) being inserted into the sleeve rod hole (201), the inner wall of the sleeve rod ring pad (3) contacting the outer wall of the vertical rod body; the sleeve rod ring pad (3) is formed by bending a whole steel strip.

3. The preassembled integrated rod cross arm seat according to claim 2 is characterized in that: The outer wall of the sleeve rod ring pad (3) is in contact with the longitudinal rib plate 1 (4) and the longitudinal rib plate 2 (5).

4. The preassembled integrated rod cross arm seat according to claim 1, characterized in that: Plugs one (401) are provided at both ends of the longitudinal rib plate one (4), a longitudinal rib slot (202) is provided in the center of the top of the sleeve rod plate (2), and the plug one (401) is inserted into the longitudinal rib slot (202).

5. The preassembled integrated rod cross arm seat according to claim 4, characterized in that: A second plug (501) is provided on the bottom surface of the second longitudinal reinforcement plate (5), and a third plug (502) is provided on both end surfaces. The second plug (501) is inserted into the first longitudinal reinforcement insertion hole (103), and the third plug (502) is plugged into the second longitudinal reinforcement insertion hole (203).

6. The preassembled integrated rod cross arm seat according to claim 5, characterized in that: It also includes angle rib plates (6), which are multiple in number and symmetrically arranged on the outside of the two longitudinal rib plates (5) and connected to the flange plate (1).

7. The preassembled integrated rod cross arm seat according to claim 6, characterized in that: A plug four (601) is provided on the end surface of the angle rib plate (6) facing the flange plate (1), and a plug five (602) is provided on the end surface of the angle rib plate (6) facing the longitudinal rib plate two (5); a longitudinal rib insertion hole one (103) is provided on the flange plate (1) at the position of the plug four (601), and an angle rib slot (503) for accommodating the plug five (602) is provided on the top surface of the longitudinal rib plate two (5).

8. A method for manufacturing a preassembled integrated rod cross arm seat, characterized in that: The method of making the preassembled integrated rod cross arm seat according to any one of claims 1 to 7 comprises the following steps: Step 1: Use a laser cutting machine or a CNC plasma cutting machine to process a flange plate (1) having a tenon and a mortise, a sleeve rod plate (2), a longitudinal rib plate 1 (4) and a longitudinal rib plate 2 (5), remove contour burrs and mortise burrs, and process a threaded hole (101) on the flange plate (1); Step 2: assembling, on a welding platform, inserting a set of flange plates (1), sleeve rod plates (2), longitudinal rib plates 1 (4) and longitudinal rib plates 2 (5) into the main frame; Step 3: spot welding: using an electric welder to spot weld each weld to temporarily fix the main frame; Step 4: Full welding, symmetrical welding, welding each weld to complete the main frame welding; Step 5: Weld or install the skin panel using screws.

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