Vehicle body side wall assembling device

Abstract

The utility model relates to the technical field of railway wagon manufacturing, in particular to a vehicle body side wall assembling device. The vehicle body side wall assembling device provided by the embodiment of the utility model comprises a positioning mechanism and a fixing mechanism. The positioning mechanism comprises a main body and a first positioning piece, a second positioning piece and a third positioning piece which are sequentially arranged on the main body, the first positioning piece supports and positions the lower side beam, the second positioning piece supports and positions the web, and the third positioning piece supports and positions the upper side beam, so that the lower side beam, the web and the upper side beam are assembled into a whole. The fixing mechanism is used for fixing the lower side beam to the first positioning piece. According to the vehicle body side wall assembling device, under joint positioning of the first positioning piece, the second positioning piece and the third positioning piece, the lower side beam, the web and the upper side beam can be assembled into a whole, the assembling precision of the upper side beam, the web and the lower side beam is improved, and the forming quality of the side wall is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of railway freight car manufacturing, in particular to a vehicle body side wall assembly device. Background Art

[0002] The body structure of railway freight cars can be divided into structures with a center beam and structures without a center beam. The load-bearing capacity of vehicles without a center beam is mainly provided by the side walls. When manufacturing the side walls, the various components must be assembled first and then welded into shape. In the related technologies, due to the large number of side wall parts and the complex assembly process, the assembly precision may be low, thus affecting the molding quality. Utility Model Content

[0003] The present application provides a vehicle side wall assembly device, which improves the technical problem in the related art that due to the large number of side wall accessories and the complex assembly process, the assembly precision may be low, thereby affecting the welding quality.

[0004] The embodiment of the present application provides a vehicle body side wall assembly device, wherein the side wall includes a web and an upper side beam and a lower side beam respectively arranged on both sides of the web, and the assembly device includes:

[0005] The positioning mechanism comprises a main body and a first positioning member, a second positioning member and a third positioning member sequentially arranged on the main body, wherein the first positioning member supports and positions the lower beam, the second positioning member supports and positions the web plate, and the third positioning member supports and positions the upper beam, so as to assemble the lower beam, the web plate and the upper beam into a whole;

[0006] A fixing mechanism is used to fix the lower side beam to the first positioning member.

[0007] In some embodiments, a welding gap for welding the lower beam and the web is defined between the first positioning member and the second positioning member.

[0008] In some embodiments, the web is composed of a plurality of steel plates, and the second positioning member includes a plurality of second positioning portions corresponding one-to-one to the steel plates, and the second positioning portions are used to position the corresponding steel plates.

[0009] In some embodiments, there is a welding gap between two adjacent second positioning portions for welding two adjacent steel plates.

[0010] In some embodiments, there is a height difference between top surfaces of two adjacent second positioning portions.

[0011] In some embodiments, the third positioning member includes a plurality of third positioning portions disposed at intervals, and each of the second positioning portions corresponds to at least one of the third positioning portions.

[0012] In some embodiments, there is a height difference between a top surface of the second positioning member and a top surface of the third positioning member.

[0013] In some embodiments, the fixing mechanism includes a first pressing member and a clamping member, both of which are fixedly arranged on the main body, the lower side beam includes a side plate and a bottom plate arranged at an angle, the side plate is connected to the web, the first pressing member is used to press the lower side beam against the top surface of the first positioning member, and the clamping member is used to clamp the bottom plate.

[0014] In some embodiments, the fixing mechanism further includes a second pressing member, and the second pressing member is used to press the web against the top surface of the second positioning member.

[0015] In some embodiments, the fixing mechanism also includes a third pressing member and a fourth pressing member, wherein the third pressing member and the fourth pressing member are fixedly arranged on the main body, the third pressing member is used to press the upper side beam against the top surface of the third positioning member, and the fourth pressing member is used to press the upper side beam against the side surface of the web.

[0016] The beneficial effects of this application are as follows:

[0017] The present application provides a vehicle side wall assembly device, which has an assembly mechanism and a fixing mechanism. The assembly mechanism includes a first positioning member, a second positioning member and a third positioning member which are arranged in sequence. The first positioning member is used to position the lower side beam, the second positioning member is used to position the web, and the third positioning member is used to position the upper side beam. That is, under the common positioning of the first positioning member, the second positioning member and the third positioning member, the lower side beam, the web and the upper side beam can be assembled into a whole, thereby improving the assembly accuracy of the upper side beam, the web and the lower side beam, and ensuring the molding quality of the side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model.

[0019] Figure 1 A schematic diagram of the structure of a vehicle body provided in an embodiment of the present application.

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the middle side wall.

[0021] Figure 3 A schematic diagram of the assembly of the assembly device and the side wall provided in an embodiment of the present application.

[0022] Figure 4 for Figure 3 Schematic diagram of the structure of the positioning mechanism.

[0023] Figure 5 for Figure 3 Assembly diagram of the central fixing mechanism and the side wall Figure 1 .

[0024] Figure 6 for Figure 3 Assembly diagram of the central fixing mechanism and the side wall Figure 2 .

[0025] Figure 7 A flow chart of a vehicle body side wall forming method provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1-car body, 100-side wall, 110-lower side beam, 120-web, 130-upper side beam, 140-column, 200-positioning mechanism, 210-first positioning member, 220-second positioning member, 221-second positioning part, 230-third positioning member, 231-third positioning part, 240-main body, 300-fixing mechanism, 310-first clamping member, 311-first clamping part, 312-first driving part, 320-clamping member, 321-clamping part, 322-second driving part, 330-second clamping member, 331-movable small gantry, 332-hydraulic jack, 340-third clamping member, 341-third clamping part, 342-third driving part, 350-fourth clamping member, 351-fourth clamping part, 352-fourth driving part. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] Combination Figure 1-Figure 6 The structure of the railway freight car body 1 can be divided into a structure with a center beam and a structure without a center beam. The vehicle with a center beam structure includes a car body 1, and the car body 1 includes a side wall 100. The load-bearing capacity of the vehicle with a center beam structure is mainly provided by the side wall 100. The side wall 100 includes a web 120 and an upper side beam 130 and a lower side beam 110 respectively arranged on both sides of the web 120. The embodiment of the present application provides a car body side wall assembly device, which can improve the assembly accuracy of the upper side beam 130, the web 120 and the lower side beam 110, and ensure the molding quality of the side wall 100.

[0033] Combination Figure 1-Figure 4 The vehicle body side wall assembly device provided in the embodiment of the present application includes a positioning mechanism 200 and a fixing mechanism 300. The positioning mechanism 200 includes a main body 240 and a first positioning member 210, a second positioning member 220 and a third positioning member 230 sequentially arranged on the main body 240. The first positioning member 210 supports and positions the lower side beam 110, the second positioning member 220 supports and positions the web 120, and the third positioning member 230 supports and positions the upper side beam 130, so as to assemble the lower side beam 110, the web 120 and the upper side beam 130 into a whole. The fixing mechanism 300 is used to fix the lower side beam 110 to the first positioning member 210.

[0034] Since the lower side beam 110, the web 120 and the upper side beam 130 are arranged in sequence in the side wall 100, the first positioning member 210 supporting and positioning the lower side beam 110, the first positioning member 210 supporting and positioning the web 120, and the third positioning member 230 supporting and positioning the upper side beam 130 are arranged in sequence, and the first positioning member 210, the second positioning member 220 and the third positioning member 230 are all arranged on the main body 240, which can improve the integration of the positioning mechanism 200. Since the lower side beam 110 is located at the bottom of the side wall 100 after the vehicle body 1 is formed, when assembling the side wall 100, the lower side beam 110 is used as a reference for assembly, that is, the lower side beam 110 is positioned first, and then the web 120 and the upper side beam 130 are positioned in sequence, so the positioning of the lower side beam 110 is particularly important. Once the lower side beam 110 deviates from the positioning, it will affect the overall assembly accuracy of the side wall 100. In the embodiment of the present application, the lower side beam 110 is fixed to the first positioning member 210 by the fixing mechanism 300, which can effectively prevent the lower side beam 110 from deviating from the positioning and ensure the assembly accuracy of the side wall 100.

[0035] The present application provides a vehicle body side wall assembly device, which is provided with a special first positioning member 210, a second positioning member 220 and a third positioning member 230 to respectively position the lower side beam 110, the web 120 and the upper side beam 130. Under the joint positioning of the first positioning member 210, the second positioning member 220 and the third positioning member 230, the lower side beam 110, the web 120 and the upper side beam 130 can be assembled into a whole, thereby improving the assembly accuracy of the upper side beam 130, the web 120 and the lower side beam 110, and ensuring the molding quality of the side wall 100; and the lower side beam 110 used as the assembly reference is fixed by the fixing mechanism 300 to prevent the lower side beam 110 from deviating from the positioning, thereby further ensuring the assembly accuracy of the side wall 100.

[0036] It should be noted that the side wall 100 is placed flat on a horizontal plane during the assembly process. Therefore, the orientation terms used in the embodiments of the present application are based on the shape of the side wall 100 placed flat on a horizontal plane, but this is not the only standard. When the side wall 100 has other shapes, the orientation mentioned in this article will also change accordingly.

[0037] In some embodiments, the top surface of the first positioning member 210 is used to support the lower side beam 110, and the top surface of the first positioning member 210 is consistent with the outer contour of the lower side beam 110; the top surface of the second positioning member 220 is used to support the web 120, and the top surface of the second positioning portion 221 is consistent with the outer contour of the web 120; the top surface of the third positioning member 230 is used to support the upper side beam 130, and the top surface of the third positioning portion 231 is consistent with the outer contour of the upper side beam 130.

[0038] That is, the outer contour of the lower side beam 110 completely corresponds to the top surface of the first positioning member 210, the outer contour of the web 120 completely corresponds to the top surface of the second positioning member 220, and the outer contour of the upper side beam 130 completely corresponds to the top surface of the third positioning member 230. The first positioning member 210, the second positioning member 220 and the third positioning member 230 are positioned on the main body 240 according to the process requirements of the side wall 100, and then the lower side beam 110, the web 120 and the upper side beam 130 are placed on the top surfaces of the first positioning member 210, the second positioning member 220 and the third positioning member 230 in sequence, so that the positioning of the lower side beam 110, the web 120 and the upper side beam 130 meets the process requirements, thereby ensuring the assembly accuracy of the side wall 100.

[0039] In some embodiments, there is a weld gap between the first positioning member 210 and the second positioning member 220 for welding the lower side beam 110 and the web 120, that is, when the upper side beam 130, the web 120 and the lower side beam 110 are positioned, there is a weld gap between the web 120 and the lower side beam 110.

[0040] After the side wall 100 is assembled, welding needs to be performed between the web 120 and the lower side beam 110 to form the side wall 100. Therefore, during assembly, a weld gap for subsequent welding needs to be left between the web 120 and the lower side beam 110. However, a fillet weld is formed between the upper side beam 130 and the web 120, and no weld gap is required.

[0041] In some embodiments, the web 120 is composed of a plurality of steel plates, and the second positioning member 220 includes a plurality of second positioning portions 221 corresponding one to one with the steel plates, and the second positioning portions 221 are used to position the corresponding steel plates.

[0042] The web 120 is made of multiple steel plates, each of which is positioned individually to improve the positioning accuracy of each steel plate. Multiple second positioning parts 221 position the corresponding steel plates to assemble them into the web 120, thereby ensuring the assembly accuracy of the web 120.

[0043] Specifically, in order to reduce the manufacturing cost of the second positioning portion 221 and lighten the weight of the assembly mechanism, each second positioning portion 221 may be a frame structure.

[0044] In some embodiments, the top surface of the second positioning portion 221 is used to support the corresponding steel plate, and the top surface of the second positioning portion 221 matches the outer contour of the corresponding steel plate. That is, the outer contour of the steel plate completely corresponds to the top surface of the corresponding second positioning portion 221, and the plurality of second positioning portions 221 are positioned according to the process requirements of the web 120, and then the plurality of steel plates are respectively placed on the top surfaces of the plurality of second positioning portions 221, so that the positioning of each steel plate meets the process requirements, and the assembly accuracy of the web 120 is ensured.

[0045] In some embodiments, there is a weld gap between two adjacent second positioning portions 221 for welding two adjacent steel plates, that is, when multiple steel plates are positioned, there is a weld gap between every two adjacent steel plates.

[0046] After the web 120 is assembled, welding needs to be performed between two adjacent steel plates to form the web 120 . Therefore, during assembly, a weld gap needs to be left between each two adjacent steel plates for subsequent welding.

[0047] In some embodiments, there is a height difference between top surfaces of two adjacent second positioning portions 221 .

[0048] Since different parts of the web 120 are subjected to different bearing capacities, the web 120 is formed by splicing a plurality of steel plates of inconsistent thicknesses, and the thicknesses of two adjacent steel plates are inconsistent. The splicing of steel plates of different thicknesses will be processed into a transition zone of the same thickness to facilitate welding. Therefore, in order to allow the transition zones of two adjacent steel plates to be butted together, there is a height difference between the top surfaces of two adjacent second positioning portions 221 to adapt to steel plates of different thicknesses. Of course, the height difference between the top surfaces of two adjacent second positioning portions 221 is the thickness difference between the two adjacent steel plates.

[0049] It should be noted that the lower side beam 110 is also formed by bending multiple steel plates with inconsistent thicknesses. However, in actual production, the lower side beam 110 has been formed before assembling the side wall 100. Therefore, the embodiment of the present application does not describe the forming of the lower side beam 110. The upper side beam 130 is an integral structure with uniform thickness and is made of square steel.

[0050] In some embodiments, the third positioning member 230 includes a plurality of third positioning portions 231 disposed at intervals, and each second positioning portion 221 corresponds to at least one third positioning portion 231 .

[0051] Since the upper beam 130 is an integral body and is not easily deformed, the upper beam 130 can be supported by a plurality of third positioning portions 231 arranged at intervals, that is, there is a gap in the third positioning member 230, which can save the material for making the third positioning member 230. Obviously, the outer contour of the overall top surface formed by the plurality of third positioning portions 231 corresponds to the upper beam 130. Of course, the intervals between adjacent third positioning portions 231 cannot be too large, otherwise it will affect the supporting and positioning effect of the upper beam 130. Therefore, each second positioning portion 221 corresponds to at least one third positioning portion 231, which can ensure the supporting and positioning effect of the upper beam 130.

[0052] The lower side beam 110 is a spliced ​​structure and is relatively easy to deform, so the first positioning member 210 can be an integral structure. Since the first positioning member 210 is narrow, the first positioning member 210 can be a solid structure without being made into a frame form.

[0053] In some embodiments, there is a height difference between the top surface of the second positioning member 220 and the top surface of the third positioning member 230 .

[0054] Combination Figure 5 and Figure 6 , since the upper beam 130 is made of square steel and the web 120 is made of steel plate, the cross-sectional width of the upper beam 130 is greater than that of the web 120, and the web 120 is not connected to the end of the side of the upper beam 130, but to a certain position in the middle of the side of the upper beam 130, that is, in the formed side wall 100, there is a height difference between the top surface of the web 120 and the top surface of the upper beam 130, and there is also a height difference between the bottom surface of the web 120 and the bottom surface of the upper beam 130. Therefore, there needs to be a height difference between the top surface of the second positioning member 220 and the top surface of the third positioning member 230, so that the connection position of the web 120 on the side of the upper beam 130 can meet the process requirements.

[0055] In some embodiments, in combination Figure 3 , Figure 5 and Figure 6 The fixing mechanism 300 includes a first pressing member 310 and a clamping member 320, both of which are fixedly arranged on the main body 240, and the lower side beam 110 includes a side plate and a bottom plate arranged at an angle, and the side plate is connected to the web 120. The first pressing member 310 is used to press the lower side beam 110 against the top surface of the first positioning member 210, and the clamping member 320 is used to clamp the bottom plate.

[0056] The first clamping member 310 presses the lower side beam 110 against the top surface of the first positioning member 210, and the clamping member 320 is fixedly arranged on the main body 240 and clamps the bottom plate, that is, after the lower side beam 110 is positioned, the first clamping member 310 limits the lower side beam 110 in the vertical direction, and the clamping member 320 limits the lower side beam 110 in the horizontal direction. Under the joint action of the first clamping member 310 and the clamping member 320, the lower side beam 110 is fixed to the first positioning member 210 to prevent the lower side beam 110 from deviating from the positioning position. Since the lower side beam 110 is the assembly reference of the side wall 100, the positioning accuracy of the lower side beam 110 is high, which can improve the overall assembly accuracy of the side wall 100.

[0057] The first pressing member 310 and the clamping member 320 can be provided as a set, that is, each first pressing member 310 is equipped with one or two clamping members 320, and the first pressing member 310 and the clamping member 320 are provided at intervals. Of course, the first pressing member 310 and the clamping member 320 are provided on the side of the upper beam 130 away from the web 120 to avoid interference with the web 120 and the lower beam 110. According to the process requirement that the side wall 100 needs to have an upper deflection of 15±5mm after forming, the lower beam 110 has a certain curvature, and because the length of the lower beam 110 is relatively long, in order to ensure that all parts of the lower beam 110 can be fixed, three sets of first pressing members 310 and clamping members 320 can be provided along the length direction of the lower beam 110, which are respectively provided at the vertex and both ends of the arc.

[0058] Specifically, the first clamping member 310 includes a first clamping portion 311 and a first driving portion 312. The first clamping portion 311 contacts the lower side beam 110. Of course, the first clamping portion 311 can contact the side plate or the bottom plate, and there is no limitation on this. The first driving portion 312 can drive the first clamping portion 311 to move toward the first positioning member 210 so that the first clamping portion 311 presses the lower side beam 110 against the top surface of the first positioning member 210. The clamping member 320 includes a clamping portion 321 and a second driving portion 322. The clamping portion 321 includes two clamping plates arranged opposite to each other. The two clamping plates clamp the bottom plate. The second driving portion 322 can drive the two clamping plates to move relative to each other to clamp the bottom plate. The first driving portion 312 and the second driving portion 322 can be any driving members such as cylinders.

[0059] In some embodiments, the molding device further includes a second pressing member 330 , and the second pressing member 330 is used to press the web 120 against the top surface of the second positioning member 220 .

[0060] As mentioned above, the web 120 is formed by splicing a plurality of steel plates of different thicknesses, and the splicing portion has a transition zone of the same thickness as the steel plates on both sides, so the top surfaces of the two adjacent second positioning portions 221 have a height difference so that the transition zones of the two adjacent steel plates can be butted. If the steel plate is slightly tilted, the transition zones of the two adjacent steel plates may be uneven, resulting in failure to meet the joint requirements. Therefore, a second pressing member 330 is required to press the web 120 against the top surface of the second positioning member 220 to prevent the steel plate from tilting and meet the joint requirements.

[0061] Specifically, since the web 120 is disposed between the upper beam 130 and the lower beam 110, the second pressing member 330 can be a movable small gantry 331 + a hydraulic jack 332, that is, the main body 240 is located inside the movable small gantry 331, and the hydraulic jack 332 is installed on the movable small gantry 331, and is used to press the web 120 against the top surface of the second positioning member 220. That is, the movable small gantry 331 moves, and the hydraulic jack 332 presses the web 120 at the corresponding position. The combination of the movable small gantry 331 + the hydraulic jack 332 is a conventional setting in the art, and will not be repeated here.

[0062] In some embodiments, the fixing mechanism 300 also includes a third clamping member 340 and a fourth clamping member 350, which are fixedly disposed on the main body 240, the third clamping member 340 is used to press the upper side beam 130 against the top surface of the third positioning member 230, and the fourth clamping member 350 is used to press the upper side beam 130 against the side of the web 120.

[0063] According to the process requirements, the web 120 is connected to a certain position in the middle of the side of the upper beam 130. Once the upper beam 130 is slightly tilted, the relative position between the web 120 and the upper beam 130 will not meet the process requirements. Therefore, a third clamping member 340 is required to press the upper beam 130 against the top surface of the third positioning member 230. In the subsequent welding, the lower beam 110 is also used as the welding reference, that is, the lower beam 110 and the web 120 are welded first, and then the web 120 and the upper beam 130 are welded. After the lower beam 110 and the web 120 are welded, the whole of the web 120 and the lower beam 110 is used as the welding reference. The fourth clamping member 350 is used to press the upper beam 130 against the side of the web 120, so that the upper beam 130 is close to the side of the web 120, so as to ensure the overall deflection of the side wall 100 after assembly.

[0064] Specifically, the third pressing member 340 and the fourth pressing member 350 are also provided in sets, and five sets can be provided at intervals along the length direction of the upper beam 130. The third pressing member 340 includes a third pressing portion 341 and a third driving portion 342. The third pressing portion 341 contacts the top surface of the upper beam 130. The third driving portion 342 can drive the third pressing portion 341 to move toward the direction close to the third positioning member 230, so that the third pressing portion 341 presses the upper beam 130 against the top surface of the third positioning member 230; the fourth pressing member 350 includes a fourth pressing portion 351 and a fourth driving portion 352. The fourth pressing portion 351 contacts the side surface of the upper beam 130. The fourth driving portion 352 can drive the fourth pressing portion 351 to move toward the direction close to the web 120, so that the fourth pressing portion 351 presses the upper beam 130 against the web 120. The third driving part 342 and the fourth driving part 352 can be any driving parts such as cylinders.

[0065] Based on the same utility model concept, combined with Figure 1-Figure 7 The embodiment of the present application provides a method for forming a vehicle body side wall. The method is implemented according to the vehicle body side wall assembly device described above. The method comprises:

[0066] S100: Positioning the lower beam 110 on the main body 240 by the first positioning member 210 , positioning the web 120 by the second positioning member 220 , and positioning the upper beam 130 by the third positioning member 230 , so as to assemble the lower beam 110 , the web 120 and the upper beam 130 into a whole.

[0067] The side wall 100 includes a first surface and a second surface facing each other, the first surface faces the main body 240, that is, the first positioning member 210 contacts the first surface of the lower side beam 110, the second positioning member 220 contacts the first surface of the web 120, and the third positioning member 230 contacts the first surface of the upper side beam 130. After the vehicle body 1 is formed, the first surface is the inner side surface of the side wall 100, and the second surface is the outer side surface of the side wall 100. Since the first positioning member 210, the second positioning member 220 and the third positioning member 230 are provided to position the lower side beam 110, the web 120 and the upper side beam 130 respectively, the lower side beam 110, the web 120 and the upper side beam 130 can be assembled into a whole under the common positioning of the first positioning member 210, the second positioning member 220 and the third positioning member 230, thereby improving the assembly accuracy of the upper side beam 130, the web 120 and the lower side beam 110, and ensuring the molding quality of the side wall 100.

[0068] In some embodiments, the step of positioning the web 120 by the second positioning member 220 includes:

[0069] The first steel plate is positioned by the second positioning member 220 . After the first steel plate is positioned, the second steel plate is positioned by the second positioning member 220 . After the second steel plate is positioned, the third steel plate is positioned by the second positioning member 220 .

[0070] Among them, the number of steel plates used for splicing the web 120 is odd and greater than or equal to 5. Among the multiple steel plates, the steel plate arranged in the middle is the first steel plate, the steel plates arranged at both ends are the second steel plates, and the steel plate arranged between the first steel plate and the second steel plate is the third steel plate. There is only one first steel plate and there are only two steel plates at the end. The number of the third steel plates is determined according to the total number of steel plates. For example, when the number of steel plates is 5, the number of the third steel plates is two.

[0071] When assembling the web 120, first position the middle steel plate and adjust the relative position with the lower beam 110, then position the steel plates at both ends, the steel plates at both ends correspond to the two ends of the lower beam 110, keep the steel plates at both ends and the end of the lower beam 110 in the correct position, and then hoist the steel plates in the middle of both sides. In this solution, the steel plates at both ends are positioned first and then the steel plates in the middle of both sides, which can ensure the accuracy of the length of the side wall 100 and the relative position accuracy of the web 120 and the upper beam 130 and the lower beam 110.

[0072] S200 : welding the second surface of the lower beam 110 and the second surface of the web 120 , and the second surface of the web 120 and the second surface of the upper beam 130 , to form a semi-formed side wall 100 .

[0073] After the side wall 100 is assembled, both the first surface and the second surface of the side wall 100 need to be welded. Since the first surface of the side wall 100 faces the main body 240, the second surface of the side wall 100 faces away from the main body 240 and faces the operator, so the second surface of the lower beam 110 and the second surface of the web 120, as well as the second surface of the web 120 and the second surface of the upper beam 130 can be welded.

[0074] Of course, before welding, spot welding is required, first between the web 120 and the upper beam 130, and between the web 120 and the lower beam 110; and then between each two adjacent steel plates.

[0075] In some embodiments, the step of welding the second surface of the lower beam 110 and the second surface of the web 120, and the second surface of the web 120 and the second surface of the upper beam 130 to form the semi-formed side wall 100 includes:

[0076] The second surfaces of every two adjacent steel plates are welded, the second surface of the lower beam 110 and the second surface of the web 120 , and the second surface of the web 120 and the second surface of the upper beam 130 are welded.

[0077] That is, the steel plates are welded first to make the web 120 an integral whole, and then the web 120 is welded to the upper beam 130 and the lower beam 110 to resist the welding deformation caused by the upper and lower long straight welds when the web 120 is welded to the upper beam 130 and the lower beam 110, so as to ensure the forming deflection of the side wall 100.

[0078] Of course, when welding the first surface of the semi-formed side wall 100 , the welding is also performed in the same order.

[0079] S300: Weld a plurality of columns 140 on the web 120 along the length direction of the semi-formed side wall 100, and weld one end of the column 140 to the lower beam 110 and the other end to the upper beam 130; wherein the plurality of columns 140 are arranged at intervals.

[0080] The side wall 100 further includes a plurality of columns 140, which are arranged at intervals on the web 120, and whose two ends are respectively welded to the upper beam 130 and the lower beam 110. Before welding the first surface of the semi-formed side wall 100, the columns 140 are assembled on the first surface of the semi-formed side wall 100, so that the columns 140 can play a process support role, control subsequent welding deformation, and ensure the overall flatness of the side wall 100 after forming.

[0081] It should be noted that since the two ends of the column 140 are respectively welded to the upper beam 130 and the lower beam 110, after the column 140 is assembled, part of the welds between the upper beam 130 and the web 120 and between the web 120 and the lower beam 110 will be blocked. Therefore, before assembling the column 140, it is necessary to first weld the part of the welds that will be blocked later to avoid incomplete welding.

[0082] In some embodiments, the sample rod can be used to assist in confirming the installation position of the column 140 to improve the assembly efficiency of the column 140 and ensure the assembly quality. The sample rod is perpendicular to the column 140, and the length of the sample rod is the distance between two adjacent columns 140. Therefore, when assembling the columns 140, the starting position on the web 120 can be confirmed first, and the first column 140 can be welded at the starting position, and then one end of the sample rod can be overlapped with the first column 140, and the next column 140 can be welded at the other end of the sample rod, and so on, all the columns 140 can be assembled.

[0083] S400 : turning over the semi-formed side wall 100 , and welding the first surface of the lower side beam 110 and the first surface of the web 120 , as well as the first surface of the web 120 and the first surface of the upper side beam 130 , to form the side wall 100 .

[0084] After the semi-formed side wall 100 is turned over, the first surface of the side wall 100 faces the operator, so the first surface of the lower side beam 110 and the first surface of the web 120, as well as the first surface of the web 120 and the first surface of the upper side beam 130 can be welded together. It should be noted that after the semi-formed side wall 100 is turned over, a support device is required to support the semi-formed side wall 100, so as to facilitate the operator to perform welding. The top surface of the support device is in contact with the second surface of the semi-formed side wall 100. Since the second surface of the semi-formed side wall 100 has been welded to form a whole, there is no need to assemble it on the support device. The semi-formed side wall 100 only needs to be placed on the support device.

[0085] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0086] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A vehicle body side wall assembly device, characterized in that: The side wall includes a web and an upper beam and a lower beam respectively arranged on both sides of the web, and the assembly device includes: The positioning mechanism comprises a main body and a first positioning member, a second positioning member and a third positioning member sequentially arranged on the main body, wherein the first positioning member supports and positions the lower beam, the second positioning member supports and positions the web plate, and the third positioning member supports and positions the upper beam, so as to assemble the lower beam, the web plate and the upper beam into a whole; A fixing mechanism is used to fix the lower side beam to the first positioning member.

2. The vehicle body side wall assembly device according to claim 1, characterized in that: A welding gap for welding the lower beam and the web is provided between the first positioning member and the second positioning member.

3. The vehicle body side wall assembly device according to any one of claims 1 to 2, characterized in that: The web is composed of a plurality of steel plates, and the second positioning member includes a plurality of second positioning portions corresponding one to one with the steel plates, and the second positioning portions are used for positioning the corresponding steel plates.

4. The vehicle body side wall assembly device according to claim 3, characterized in that: There is a welding gap between two adjacent second positioning parts for welding the two adjacent steel plates.

5. The vehicle body side wall assembly device according to claim 3, characterized in that: There is a height difference between the top surfaces of two adjacent second positioning portions.

6. The vehicle body side wall assembly device according to claim 3, characterized in that: The third positioning member includes a plurality of third positioning portions that are spaced apart from each other, and each of the second positioning portions corresponds to at least one of the third positioning portions.

7. The vehicle body side wall assembly device according to any one of claims 1 to 2, characterized in that: There is a height difference between the top surface of the second positioning member and the top surface of the third positioning member.

8. The vehicle body side wall assembly device according to any one of claims 1 to 2, characterized in that: The fixing mechanism includes a first pressing member and a clamping member, both of which are fixedly arranged on the main body, the lower side beam includes a side plate and a bottom plate arranged at an angle, the side plate is connected to the web, the first pressing member is used to press the lower side beam against the top surface of the first positioning member, and the clamping member is used to clamp the bottom plate.

9. The vehicle body side wall assembly device according to claim 8, characterized in that: The fixing mechanism further comprises a second pressing member, and the second pressing member is used to press the web against the top surface of the second positioning member.

10. The vehicle body side wall assembly device according to claim 8, characterized in that: The fixing mechanism also includes a third pressing member and a fourth pressing member, which are fixedly arranged on the main body, the third pressing member is used to press the upper side beam against the top surface of the third positioning member, and the fourth pressing member is used to press the upper side beam against the side surface of the web.

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