Passenger car top cover framework fragmentation welding and assembling tool

Abstract

The utility model belongs to the technical field of frame assembly, and particularly relates to a passenger car top cover framework fragment welding assembly tool which is characterized in that a positioning base plate is arranged in the middle of a flexible platform, and a plurality of longitudinal beam positioning clamping plates for positioning longitudinal beams in an assembly welding area are arranged on the positioning base plate; the two opposite sides of the positioning base plate are provided with transverse edge beam positioning clamping plates used for positioning an edge beam at one end of each fragment. The four sets of longitudinal edge beam positioning clamping plates are arranged on the flexible platform and distributed outside the two sides, provided with the transverse edge beam positioning clamping plates, of the positioning base plate in a pairwise mode, and the two sets of longitudinal edge beam positioning clamping plates located on the single side of the positioning base plate are used for positioning edge longitudinal beams on the two sides of a fragment. According to the utility model, the efficiency of manual assembly after fragmentation welding of the robot can be improved, the quality after assembly is ensured, and the whole structure is simple, few materials are used, the cost is low, and the processing is easy.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle frame assembly, and in particular relates to a piece-by-piece welding assembly tool for a bus roof frame. Background Art

[0002] The roof frame of new energy buses is generally a spliced structure of crossbeams and longitudinal beams. Due to the large size of the entire bus roof frame, if it is manually welded after being assembled, as the entire frame consists of hundreds of different materials, each piece needs to be placed and welded. In particular, the production of welding tooling requires positioning all the parts. The production of tooling molds can take two or three days at most, or as little as one or two days, seriously affecting the production efficiency of the main line. The labor intensity is also high and the environment is harsh. If the entire frame is assembled and then welded by robots, the material is large, the placement time is long, and the efficiency is low. In addition, due to the large overall length of the frame and the large welding stroke of the robot, the requirements for welding equipment are also increased. Therefore, some existing production lines currently use a piece-by-piece welding method. The welded pieces are then manually assembled, and the areas between the pieces are welded. This method has relatively low requirements for robotic welding equipment, but the assembly process requires high positioning accuracy, and manual control of accuracy is difficult, which can easily affect the dimensional accuracy and quality of the bus roof frame after assembly and welding. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a bus roof frame segment welding assembly tool which improves assembly efficiency and precision, has low cost and is easy to process.

[0004] The contents of this utility model include:

[0005] Flexible platform;

[0006] A positioning base plate is provided in the middle of the flexible platform. The positioning base plate is provided with a plurality of longitudinal beam positioning clamps for positioning longitudinal beams in the assembly welding area, and transverse side beam positioning clamps for positioning the side beams at one end of the segment are provided on opposite sides of the positioning base plate.

[0007] The longitudinal side beam positioning card plates have four groups and are all arranged on the flexible platform. The four groups of longitudinal side beam positioning card plates are distributed in pairs on both sides of the positioning substrate with the transverse side beam positioning card plates. The two groups of longitudinal side beam positioning card plates located on a single side of the positioning substrate are used to position the side longitudinal beams on both sides of the slice.

[0008] Furthermore, the positioning base plate is detachably arranged on the flexible platform through a locking pin, and the tops of the longitudinal beam positioning card plate and the transverse side beam positioning card plate are both provided with card slots for positioning.

[0009] Furthermore, the bottoms of the longitudinal beam positioning clamping plate and the transverse side beam positioning clamping plate are fixedly connected to the positioning base plate.

[0010] Furthermore, the positioning base plate is provided with a plurality of insertion holes, and the bottoms of the longitudinal beam positioning card plate and the transverse side beam positioning card plate are plugged into and matched with the corresponding insertion holes to be arranged on the positioning base plate.

[0011] Furthermore, the positioning substrate is further provided with a plurality of beam positioning clamps for positioning the beams in the assembly welding area, and a clamping groove for positioning is provided on the top of the beam positioning clamp.

[0012] Furthermore, two positioning substrates are provided, and the two positioning substrates are symmetrically arranged, and two ends of the bottom of part of the longitudinal beam positioning clamping plate are correspondingly connected to the two positioning substrates.

[0013] Furthermore, the longitudinal beam positioning clamping plate whose bottom is connected to the two positioning base plates has two or more top clamping slots.

[0014] Furthermore, the flexible platform includes several sub-platforms of the same size, the sub-platforms are spliced together, and the positioning substrate is arranged on one or two sub-platforms located in the middle.

[0015] Furthermore, the number of longitudinal side beam positioning clamps in a single group of longitudinal side beam positioning clamps is more than two.

[0016] Furthermore, the positioning substrate is provided with weight-reducing holes.

[0017] The beneficial effect of the present invention is that, since the longitudinal beam positioning card plate and the transverse side beam positioning card plate are both arranged on the positioning base plate, the side cross beam of the slice is positioned by the transverse side beam positioning assembly, and the side longitudinal beam of the slice is positioned by the longitudinal side beam positioning assembly, the position and posture of the two slices can be quickly and accurately determined and the distance accuracy between the two slices can be controlled and determined, and based on this, the assembly accuracy of the part between the two slices in the bus roof frame and the overall length dimension accuracy after the bus roof frame is assembled can be quickly and effectively ensured. In the assembly welding area between the two slices in the bus roof frame, the longitudinal beam is positioned horizontally by the longitudinal beam positioning card plate and positioned longitudinally by the side cross beams of the two slices, effectively controlling the positioning accuracy of the assembly welding area. When the tooling is used for assembly, the efficiency and quality of the assembly after the slices are welded can be effectively improved, thereby improving the production efficiency of the production line, and the overall structure is simple. Except for the flexible platform, the remaining positioning base plates and positioning card plates are all plate structures, which use less materials, are low in cost, and are easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the first embodiment of the overall structure of the positioning substrate of the present invention.

[0019] Figure 2 This utility model is used for the welding and assembling of the bus roof frame. Figure 1 Schematic diagram of the assembly of the overall structure of the positioning base plate.

[0020] Figure 3 This is a schematic diagram of a second embodiment of the overall structure of the positioning substrate of the present invention.

[0021] Figure 4 This utility model is used for the welding and assembling of the bus roof frame. Figure 2 Schematic diagram of the assembly of the overall structure of the positioning base plate.

[0022] In the figure: 1. Sub-platform; 2. Positioning base plate; 21. Weight reduction hole; 3. Cross beam positioning plate; 4. Longitudinal beam positioning plate; 5. Horizontal side beam positioning plate; 6. Longitudinal side beam positioning plate; 7. Segment; 71. Side cross beam; 72. Side longitudinal beam. DETAILED DESCRIPTION

[0023] like Figures 1-4 As shown, the present invention provides a tool for welding and assembling bus roof frame segments. The assembly tool comprises a flexible platform and a positioning base plate 2, which is disposed in the middle of the flexible platform. The positioning base plate 2 is provided with several longitudinal beam positioning clamps 4 for positioning longitudinal beams in the assembly welding area. Furthermore, transverse side beam positioning clamps 5 are provided on opposite sides of the positioning base plate 2 for positioning a cross beam 71 at one end of a segment 7. The segment 7 is a pre-welded portion of the bus roof frame, presenting a frame-like structure.

[0024] The assembly tooling also includes longitudinal side beam positioning card plates 6, which have four groups and are all arranged on a flexible platform, and the four groups of longitudinal side beam positioning card plates 6 are distributed in pairs on both sides of the positioning substrate 2 with the transverse side beam positioning card plates 5, that is, the positioning substrate 2 has two groups of longitudinal side beam positioning card plates 6 on a single side with the transverse side beam positioning card plates 5, and the two groups of longitudinal side beam positioning card plates 6 located on a single side of the positioning substrate 2 are used to position the side longitudinal beams 72 on both sides of the segment 7.

[0025] Since the longitudinal beam positioning card plate and the transverse side beam positioning card plate are both arranged on the positioning base plate, by positioning the side cross beam 71 of the slice 7 through the transverse side beam positioning assembly, and then positioning the side longitudinal beam 72 of the slice 7 through the longitudinal side beam positioning assembly, the position and posture of the two slices 7 can be quickly and accurately determined and the distance accuracy between the two slices 7 can be controlled. Based on this, the assembly accuracy of the part between the two slices 7 in the bus roof frame and the overall length dimension accuracy after the bus roof frame is assembled can be quickly and effectively ensured. The longitudinal beam of the assembly area between the two slices 7 in the bus roof frame is positioned horizontally by the longitudinal beam positioning card plate 4 and positioned longitudinally by the side cross beams 71 of the two slices 7, effectively controlling the positioning accuracy of the assembly welding area. When assembling by this tooling, the efficiency and quality of assembly after the slices are welded can be effectively improved, thereby improving the production efficiency of the production line, and the overall structure is simple. Except for the flexible platform, the remaining positioning base plates and positioning card plates are all plate structures, which use less materials, are low in cost, and are easy to process.

[0026] The positioning substrate 2 is detachably set on the flexible platform through a locking pin to facilitate the replacement of the positioning substrate 2, thereby facilitating the replacement of the tooling according to different assembly requirements of the production line. The tops of the longitudinal beam positioning card plate 4 and the transverse side beam positioning card plate 5 are both provided with positioning slots, that is, the corresponding longitudinal beams, transverse beams, and side beams 71 are positioned through the slots.

[0027] In one setting of the present invention, the bottoms of the longitudinal beam positioning card plate 4 and the transverse side beam positioning card plate 5 are fixedly connected to the positioning base plate 2, that is, the longitudinal beam positioning card plate 4, the transverse side beam positioning card plate 5 and the positioning base plate 2 are an integrated structure.

[0028] In one embodiment of the present invention, several sockets are provided on the positioning base plate 2, and the bottoms of the longitudinal beam positioning card plate 4 and the transverse side beam positioning card plate 5 are plugged into and matched with the corresponding sockets to be set on the positioning base plate 2, thereby realizing connection with the positioning base plate 2, that is, the longitudinal beam positioning card plate 4, the transverse side beam positioning card plate 5 and the positioning base plate 2 are an assembly structure that can be assembled and disassembled, and are more flexible to use.

[0029] In the preferred assembly scene applicable to the present invention, the assembly welding area between the two segments 7 is small, only one grid (the area between the two beams spanning the entire frame is one grid), and there is no beam spanning the entire frame in the assembly welding area, so it can be used. Figure 1 The arrangement of the positioning base plate 2, the longitudinal beam positioning card plate 4, and the transverse side beam positioning card plate 5 is shown in the assembly diagram. Figure 2 shown.

[0030] In other assembly scenarios to which the present invention is applicable, due to the limitations of the welding equipment, the length that a single segment 7 can be welded is limited. When the assembly welding area between the two segments 7 has two grids, there is a beam across the entire skeleton in the assembly welding area. In this embodiment, it is preferred that the positioning substrate 2 is also provided with a plurality of beam positioning clips 3 for positioning the beams in the assembly welding area, and a positioning slot is provided on the top of the beam positioning clip 3. The beams that span the entire skeleton in the assembly area are positioned longitudinally by the beam positioning clip 3 and laterally by the longitudinal beam side surfaces at the corresponding positions. Among them, the beam positioning clip 3 is arranged on the positioning substrate 2 in the same manner as the longitudinal beam positioning clip 4 and the transverse side beam positioning clip 5, that is, welding or plugging.

[0031] The positioning substrate 2 is provided with two, the two positioning substrates 2 are symmetrically arranged, the size of a single positioning substrate 2 is smaller, the processing is more convenient, and the material cost is saved. The two ends of the bottom of the longitudinal beam positioning card 4 are connected to the two positioning substrates 2, that is, Figure 2 As shown, part of the longitudinal beam positioning clamping plate 4 is arranged across the two positioning base plates 2, and connects the two positioning base plates 2 to ensure the relative position accuracy between the two positioning base plates 2. Further preferably, the positioning base plates 2 are provided with weight-reducing holes 21 to reduce weight and save material costs.

[0032] The longitudinal beam positioning plate 4, which is connected to the two positioning base plates 2 at its bottom, has two or more slots on its top, allowing for positioning of more than two longitudinal beams. When a transverse support beam connecting adjacent longitudinal beams is present in the middle of the assembled welding area, the present invention preferably further includes a support beam positioning plate, which is positioned between the two positioning base plates 2, with the bottom of the support beam positioning plate being disposed on a flexible platform via a base plate.

[0033] The number of longitudinal side beam positioning card plates 6 in a single set of longitudinal side beam positioning card plates 6 is more than two, ensuring the accuracy and reliability of positioning the side longitudinal beams 72 on both sides of the slice 7. Figure 1 As shown, three longitudinal side beam positioning plates 6 form a group. The bottom of the side longitudinal beam 72 positioning plate 4 is provided with a mounting hole, through which a locking pin passes through the mounting hole and the hole on the sub-platform 1 to fix the side longitudinal beam 72 positioning plate 4. The top of the side longitudinal beam 72 positioning plate 4 is provided with a positioning slot.

[0034] The flexible platform includes several sub-platforms 1 of the same size, which are spliced together. The number of spliced sub-platforms 1 can be selected according to actual conditions to meet different assembly requirements and improve versatility and flexibility. When the number of spliced sub-platforms 1 is an even number, the two sub-platforms 1 located in the middle of all sub-platforms 1 are the center of the flexible platform. When the number of spliced sub-platforms 1 is an odd number, the sub-platform 1 located at the end of all sub-platforms 1 is the center of the flexible platform. Therefore, the positioning substrate 2 is disposed on one or two sub-platforms 1 located in the middle.

[0035] Adjacent sub-platforms 1 are connected via connecting plates and locking pins. Specifically, connecting holes 1 are provided on both sides of the connecting plates, and connecting holes 2 are provided on the side edges of the sub-platforms 1. By inserting a corresponding locking pin through connecting hole 1 on one side of the connecting plate and connecting hole 2 of one sub-platform 1, and then inserting a corresponding locking pin through connecting hole 1 on the other side of the connecting plate and connecting hole 2 of the other sub-platform 1, two sub-platforms 1 can be connected, making the connection simple, convenient, stable, and reliable.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0037] The one or more embodiments of this application are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this application should be included in the scope of protection of this application.

Claims

1. A bus roof frame piece welding assembly tool, characterized by: include: Flexible platform; A positioning substrate (2), the positioning substrate (2) being arranged in the middle of the flexible platform, the positioning substrate (2) being provided with a plurality of longitudinal beam positioning clamps (4) for positioning longitudinal beams in the assembly welding area, and transverse side beam positioning clamps (5) for positioning a transverse beam (71) at one end of the segment (7) being provided on opposite sides of the positioning substrate (2); Longitudinal side beam positioning card plates (6), the longitudinal side beam positioning card plates (6) having four groups and all arranged on the flexible platform, and the four groups of longitudinal side beam positioning card plates (6) are distributed in pairs on both sides of the positioning base plate (2) having the transverse side beam positioning card plates (5), and the two groups of longitudinal side beam positioning card plates (6) located on a single side of the positioning base plate (2) are used to position the side longitudinal beams (72) on both sides of the slice (7).

2. The bus roof frame piece welding assembly tool as claimed in claim 1, characterized in that: The positioning base plate (2) is detachably arranged on the flexible platform via a locking pin, and the tops of the longitudinal beam positioning card plate (4) and the transverse side beam positioning card plate (5) are both provided with card slots for positioning.

3. The bus roof frame piece welding assembly tool as claimed in claim 2, characterized in that: The bottoms of the longitudinal beam positioning clamping plate (4) and the transverse side beam positioning clamping plate (5) are fixedly connected to the positioning base plate (2).

4. The bus roof frame piece welding assembly tool as claimed in claim 2, characterized in that: The positioning base plate (2) is provided with a plurality of sockets, and the bottoms of the longitudinal beam positioning card plate (4) and the transverse side beam positioning card plate (5) are plugged into and matched with the corresponding sockets to be arranged on the positioning base plate (2).

5. The bus roof frame piece welding assembly tool as described in any one of claims 1 to 4, characterized in that: The positioning base plate (2) is further provided with a plurality of beam positioning clamps (3) for positioning the beams in the assembly welding area, and a clamping groove for positioning is provided on the top of the beam positioning clamp (3).

6. The bus roof frame segment welding assembly tool as described in any one of claims 2 to 4, characterized in that: Two positioning substrates (2) are provided, and the two positioning substrates (2) are symmetrically arranged, and two ends of the bottom of part of the longitudinal beam positioning card (4) are correspondingly connected to the two positioning substrates (2).

7. The bus roof frame segment welding assembly tool as claimed in claim 6, characterized in that: The longitudinal beam positioning clamping plate (4) whose bottom is connected to the two positioning base plates (2) has more than two top clamping slots.

8. The bus roof frame piece welding assembly tool as described in any one of claims 1-4 and 7, characterized in that: The flexible platform comprises a plurality of sub-platforms (1) of the same size, wherein the plurality of sub-platforms (1) are spliced together, and the positioning substrate (2) is arranged on one or two sub-platforms (1) located in the middle.

9. The bus roof frame piece welding assembly tool as described in any one of claims 1-4 and 7, characterized in that: The number of the longitudinal side beam positioning clamping plates (6) in a single group of the longitudinal side beam positioning clamping plates (6) is more than two.

10. The bus roof frame piece welding assembly tool as described in any one of claims 1-4 and 7, characterized in that: The positioning substrate (2) is provided with a weight-reducing hole (21).

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