Welding tool for passenger car top cover assembly

Abstract

The utility model discloses a welding tool for a passenger car top cover assembly. The welding tool comprises a main body supporting frame, the multi-hole positioning platforms are arranged on the main body supporting frame, the multiple multi-hole positioning platforms can move in the length direction of the main body supporting frame in a reciprocating mode, and the multi-hole positioning platforms are configured to support the passenger car top cover assembly. Through reciprocating movement of the multi-hole positioning platforms on the main body supporting frame, the multi-hole positioning platforms can adapt to supporting of passenger car top covers of different models, then rapid switching of welding tools of the passenger car top covers of different models is achieved, the number of workshop welding tools is reduced, the cost is reduced, and the production economy is improved; and meanwhile, the occupied area of the welding tool can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bus production, in particular to a welding tooling for a bus roof assembly. Background Technique

[0002] The roof of a bus is the cover plate at the top of the bus. The roof smoothly transitions with the front and rear window frames and the intersection points with the pillars to achieve the best visual sense and the smallest air resistance. At the same time, the roof has a certain strength and stiffness to ensure the safety of the personnel inside it. The roof can also play a role in preventing the conduction of external temperature and reducing the transmission of noise during vibration.

[0003] At present, most of the toolings for bus roof assemblies in the bus industry are fixed. Due to the complex structure of the roof skeleton, a large number of fixed positioning blocks are required, resulting in poor flexibility of the tooling and inability to quickly switch models. When welding roof assemblies of different models, multiple sets of welding toolings need to be designed, increasing the input cost and floor area. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] In view of this, the welding tooling for a bus roof assembly provided by the utility model enables multiple porous positioning platforms to reciprocate on the main support frame, so that the multiple porous positioning platforms can adapt to the support of bus roofs of different models, thereby realizing the rapid switching of welding toolings for bus roofs of different models, reducing the number of welding toolings in the workshop, reducing costs, improving production economy, and at the same time, reducing the floor area occupied by the welding tooling.

[0006] Specifically, the following technical solutions are included:

[0007] The utility model provides a welding tooling for a bus roof assembly, and the welding tooling includes:

[0008] A main support frame;

[0009] A porous positioning platform, which is arranged on the main support frame, and multiple porous positioning platforms can reciprocate in the length direction of the main support frame, and the porous positioning platform is configured to support the bus roof assembly.

[0010] Optionally, the welding tooling further includes a length positioning mechanism, and the length positioning mechanism includes:

[0011] A power component, part of the power component is connected to the main support frame, and part of the power component is fixedly connected to at least one porous positioning platform;

[0012] The positioning connecting rod is used to connect the last multi-hole positioning platform required for the current vehicle model and the redundant multi-hole positioning platforms including the power assembly.

[0013] Optionally, the power assembly includes:

[0014] A servo motor is arranged below the predetermined multi-hole positioning platform, and the output shaft of the servo motor is arranged toward one side of the main body support frame;

[0015] A gear, fixedly disposed on the output shaft;

[0016] A rack, arranged on a side of the main support frame facing the multi-hole positioning platform, the rack being meshed with the gear;

[0017] The predetermined multi-hole positioning platform is set to be a multi-hole positioning platform that matches the length of the bus roof assembly.

[0018] Optionally, the welding tool further comprises a spacing positioning mechanism, one end of which is fixedly connected to the multi-hole positioning platform, and the other end of the spacing positioning mechanism is fixedly connected to the main body support frame.

[0019] Optionally, the spacing positioning mechanism includes:

[0020] A spacing positioning plate is arranged on both sides of the main support frame in the width direction, and a plurality of positioning holes are evenly arranged on the spacing positioning plate;

[0021] A standard angle seat is L-shaped, wherein a first end of the standard angle seat is fixedly connected to the multi-hole positioning platform, and a second end of the standard angle seat is fixedly connected to the positioning hole;

[0022] Wherein, the first end and the second end of the standard angle seat are both provided with long holes.

[0023] Optionally, the multi-hole positioning platform comprises:

[0024] A base is arranged above the main body support frame, and the base is arranged vertically to the main body support frame, and a slider is arranged on the side of the base facing the main body support frame;

[0025] A pair of arc positioning plates are arranged on both sides of the base in the width direction, and the arc positioning plates are detachably connected to the base.

[0026] Optionally, a guide rail is provided on a side of the main body support frame facing the base, and the guide rail matches the sliding block.

[0027] Optionally, a plurality of mounting holes are provided on a side of the base away from the main support frame, and the multi-hole positioning platform further comprises:

[0028] The first positioning bracket is fixedly connected to the base through the mounting holes. A positioning groove is provided at one end of the first positioning bracket away from the base. The positioning groove includes a first side wall, a second side wall, and a bottom wall.

[0029] The first positioning block is arranged on the first side wall.

[0030] The movable positioning block is arranged on the second side wall. The movable positioning block is detachably connected to the second side wall.

[0031] The cushion block is arranged on the bottom wall.

[0032] Optionally, the porous positioning platform further includes:

[0033] The second positioning brackets are arranged at both ends of the base in the length direction, and the second positioning brackets are located on one side of the base in the width direction.

[0034] The second positioning blocks are detachably connected to the second positioning brackets. The second positioning blocks include a connecting portion and a support groove arranged on the connecting portion. One end of the connecting portion is detachably connected to the second positioning bracket, and the support groove is located at one end of the connecting portion away from the second positioning bracket.

[0035] Optionally, the welding tooling further includes:

[0036] The dimension positioning plate is arranged on the side surface of the main body support frame. According to the model of the bus roof cover, a plurality of the porous positioning platforms correspond to different positions on the positioning dimension plate.

[0037] The welding tooling for the bus roof cover assembly provided by the embodiment of the present invention. The welding tooling includes a main body support frame and a porous positioning platform. The main body support frame is fixed at the required position through expansion bolts, and according to different models of the bus roof cover, a plurality of porous positioning platforms are moved to the required positions on the main body support frame. The support for a plurality of beams of the bus roof cover assembly is realized through the plurality of porous positioning platforms, which is convenient for welding the bus roof cover assembly. Through the arrangement of the plurality of porous positioning platforms, the positioning requirements for the key dimensions of the bus roof cover can be met. At the same time, due to the movement of the plurality of porous positioning platforms on the main body support frame, the rapid switching of the welding tooling for different models of bus roof covers can be adapted, and thus the number of welding toolings in the workshop can be reduced. On the one hand, the cost can be reduced and the production economy can be improved. On the other hand, the floor area can be reduced and the space utilization rate of the workshop can be improved.

[0038] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 Schematic diagram of a welding fixture for a bus roof assembly according to an embodiment of the present invention;

[0041] Figure 2 Schematic diagram of a bus roof assembly according to an embodiment of the present invention;

[0042] Figure 3 Schematic diagram of a porous positioning platform according to an embodiment of the present invention;

[0043] Figure 4 Schematic diagram of a length positioning mechanism according to an embodiment of the present invention;

[0044] Figure 5 Schematic diagram of a spacing positioning mechanism according to an embodiment of the present invention;

[0045] Figure 6 Schematic diagram of a first positioning bracket according to an embodiment of the present invention.

[0046] Wherein, Figures 1 to 6 The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0047] 100 Welding tooling, 110 Main body support frame, 111 Slide rail, 120 Multi-hole positioning platform, 121 Base, 1211 Connecting hole, 122 Slide block, 123 Radian positioning plate, 1231 Weight reduction hole, 124 Mounting hole, 125 First positioning bracket, 1261 First positioning block, 1262 Moving positioning block, 1263 Spacer block, 127 Second positioning bracket, 128 Second positioning block, 1281 Connecting part, 1282 Support groove, 130 Length positioning mechanism, 131 Power assembly, 1311 Servo motor, 1312 Gear, 1313 Rack, 132 Positioning connecting rod, 140 Spacing positioning mechanism, 141 Spacing positioning plate, 1411 Positioning hole, 142 Standard angle seat, 1421 Long slot, 150 Expansion bolt, 200 Bus roof assembly, 210 Top cross beam, 220 Short longitudinal beam, 230 Side longitudinal beam. Detailed implementation manners

[0048] 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 some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] Before further describing the embodiments of the present invention in detail, the orientation terms involved in the embodiments of the present invention, such as "upper part", "lower part", and "side part", do not have the meaning of limiting the protection scope of the present invention.

[0050] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0051] Figure 1 Schematic diagram of a welding tooling for a bus roof assembly according to an embodiment of the present invention; Figure 2 Schematic diagram of a bus roof assembly according to an embodiment of the present invention.

[0052] As Figure 1 and Figure 2 shown, an embodiment of the present invention provides a welding tooling 100 for a bus roof assembly. The welding tooling 100 includes:

[0053] Main body support frame 110;

[0054] Multi-hole positioning platform 120, arranged on the main body support frame 110. A plurality of multi-hole positioning platforms 120 can reciprocate in the length direction of the main body support frame 110. The multi-hole positioning platform 110 is configured to support the bus roof assembly 200.

[0055] Among them, the welding fixture 100 includes a main body support frame 110 and a multi-hole positioning platform 120. The main body support frame 110 is fixed at the required position through expansion bolts 150. According to different models of bus roof covers, multiple multi-hole positioning platforms 120 are moved to the required positions on the main body support frame 110. The support for multiple beams of the bus roof cover assembly 200 is realized through multiple multi-hole positioning platforms 120, which facilitates the welding of the bus roof cover assembly 200. The setting of multiple multi-hole positioning platforms 120 can meet the positioning requirements of the key dimensions of the bus roof cover. At the same time, due to the movement of multiple multi-hole positioning platforms 120 on the main body support frame 110, it can adapt to the rapid switching of welding fixtures 100 for different models of bus roof covers, thereby reducing the number of welding fixtures 100 in the workshop. On the one hand, it can reduce costs and improve the economic efficiency of production. On the other hand, it can reduce the floor area and improve the space utilization rate of the workshop.

[0056] Specifically, according to experience, usually the longest bus roof cover requires 15 multi-hole positioning platforms 120 for support, and the shortest bus roof cover requires 8 multi-hole positioning platforms 120 for support. In this embodiment, the length of the main body support frame 110 is longer than the longest bus roof cover. To prevent the use of special model vehicles, more than 15 multi-hole positioning platforms 120 are provided on the main body support frame. On the one hand, it can further improve the applicable range of the welding fixture 100. On the other hand, it can also be directly used as a spare when there is a damaged multi-hole positioning platform 120, improving the support and positioning efficiency, and thus improving the welding efficiency and production efficiency. Therefore, 18 multi-hole positioning platforms 120 are used in this embodiment. The 18 multi-hole positioning platforms 120 can reciprocate on the main body support frame 110 to support and position each beam of different models of bus roof cover assemblies 200, improving the usage range of the welding fixture 100.

[0057] Figure 4 Schematic diagram of the length positioning mechanism according to an embodiment of the present invention.

[0058] In a feasible implementation manner, as Figure 4 shown, the welding fixture 100 further includes a length positioning mechanism 130. The length positioning mechanism 130 includes:

[0059] A power component 131, part of the power component 131 is connected to the main body support frame 110, and part of the power component 131 is fixedly connected to at least one multi-hole positioning platform 120;

[0060] A positioning link 132, which is used to connect the last multi-hole positioning platform 120 required for the current vehicle model and the redundant multi-hole positioning platforms 120 including the power component 131.

[0061] Among them, a partial power assembly 131 is arranged on at least one porous positioning platform 120. By arranging the power assembly 131, the porous positioning platform 120 can be driven to reciprocate on the main body support frame 110. And through the positioning connecting rod 132, the porous positioning platform 120 with the power assembly 131 is connected to the last porous positioning platform 120 required for the bus roof assembly 200. Through the porous positioning platform 120 with the power assembly 131, the last required porous positioning platform 120 can be driven to move to the required position. For the other porous positioning platforms 120 required in the middle of the bus roof assembly 200, their positions can be adjusted manually.

[0062] Specifically, taking the 18 porous positioning platforms 120 in this application as an example, the multiple porous positioning platforms 120 are numbered from 1 to 18 from left to right. Since usually the bus roof assembly 200 uses up to the 15th porous positioning platform 120 at most, and the remaining three porous positioning platforms 120 are redundant designs, the power assembly 131 is arranged on the 15th porous positioning platform 120. When 15 porous positioning platforms 120 are needed, the positioning connecting rod 132 does not need to be used. The 15th porous positioning platform 120 is driven by the power assembly 131 to move to the required position on the main body support frame 110, and the 2nd to 14th porous positioning platforms 120 in the middle can be manually moved to the required positions; when 8 porous positioning platforms 120 are needed, the 8th porous positioning platform 120 and the 15th porous positioning platform 120 are fixedly connected by the positioning connecting rod 132. In this way, through the movement of the 15th porous positioning platform 120, under the action of the positioning connecting rod 132, the 8th porous positioning platform 120 is driven to move to the required position on the main body support frame 110, and the 2nd to 7th porous positioning platforms 120 in the middle are manually moved to the required positions. At this time, the 9th to 14th porous positioning platforms 120 are all located inside the positioning connecting rod 132 and move together with the 15th porous positioning platform 120. It can be understood that when 17 porous positioning platforms 120 are needed, the 15th porous positioning platform 120 is fixedly connected to the 17th porous positioning platform 120 by the positioning connecting rod 132. Through the movement of the 15th porous positioning platform 120, under the action of the positioning connecting rod 132, the 17th porous positioning platform 120 is driven to move to the required position. Then, after removing the positioning connecting rod 132, the 2nd to 14th, and the 16th porous positioning platforms 120 in the middle are manually moved to the required positions, and the 15th porous positioning platform 120 is moved to the required position on the main body support frame 110 by the power assembly 131. Other situations are similar and will not be listed one by one.

[0063] Among them, the positioning link 132 includes a connecting rod and a pin. The pins are vertically provided at both ends of the connecting rod, and the pins are inserted into the porous positioning platform 120 to fix the two porous positioning platforms 120 at both ends. Since usually at least 8 porous positioning platforms 120 and at most 15 porous positioning platforms 120 are required for the bus roof assembly 200, the length of the positioning link 132 is such that it can connect the 8th to 15th porous positioning platforms 120. It can be understood that except for the three redundant porous positioning platforms 120, the other inapplicable porous positioning platforms 120 are limited within the range where the positioning link 132 is located.

[0064] In a feasible implementation manner, as Figure 4 shown, the power assembly 131 includes:

[0065] A servo motor 1311, which is arranged below a predetermined porous positioning platform 120, and the output shaft of the servo motor 1311 is arranged towards one side of the main body support frame 110;

[0066] A gear 1312, which is fixedly arranged on the output shaft;

[0067] A rack 1313, which is arranged on one side of the main body support frame 110 facing the porous positioning platform 120, and the rack 1313 meshes with the gear 1312;

[0068] Among them, the predetermined porous positioning platform 120 is set as the porous positioning platform 120 that matches the length of the bus roof assembly 200 of the bus.

[0069] Among them, the housing of the servo motor 1311 is fixedly connected to the porous positioning platform 120, the output shaft of the servo motor 1311 extends in a direction away from the porous positioning platform 120, a gear 1312 is fixedly arranged on the output shaft, and at the same time a rack 1313 is arranged on the main body support frame 110. The sharp corner of the rack 1313 faces the side surface of the main body support frame 110 to facilitate the meshing of the rack 1313 with the gear 1312. In this embodiment, when the servo motor 1311 rotates, the gear 1312 on it rotates. Since the rack 1313 does not move and the rack 1313 meshes with the gear 1312, the gear 1312 will rotate and move in the direction of the rack 1313, thereby realizing the reciprocating movement of the porous positioning platform 120 on the main body support frame 110 driven by the servo motor 1311.

[0070] It should be noted that, in order to ensure the smoothness and reliability of the movement of the porous positioning platform 120, the servo motor 1311 is usually arranged at the center of the porous positioning platform 120. Therefore, the rack 1313 is arranged at the middle section of the width of the main body support frame 110 in a manner adapted to this center. In this way, the forces on both ends of the porous positioning platform 120 are basically the same, which can ensure the reliability and smoothness of the movement of the servo motor 1311 driving the porous positioning platform 120, and can also ensure that the bus roof assemblies 200 at both ends of the porous positioning platform 120 are basically symmetrical, thereby improving the reliability of the operation of the welding fixture 100.

[0071] It can be understood that, as described above, in this embodiment, the predetermined porous positioning platform 120 is the 15th porous positioning platform 120 counted from the left, that is, the 15th porous positioning platform 120. This porous positioning platform 120 is usually the last porous positioning platform 120 required to meet the existing bus roof assemblies 200 of large buses (the longest). Basically symmetrical means symmetrical within the allowable error range.

[0072] Figure 5 Schematic diagram of a pitch positioning mechanism according to an embodiment of the present invention.

[0073] In a feasible implementation manner, as Figure 5 shown, the welding fixture 100 further includes a pitch positioning mechanism 140, one end of which is fixedly connected to the porous positioning platform 120, and the other end of the pitch positioning mechanism 140 is fixedly connected to the main body support frame 110.

[0074] Among them, when the required porous positioning platforms 120 move to the required positions on the main body support frame 110, they are positioned by the pitch positioning mechanism 140. In this way, the stability of the porous positioning platform 120 can be improved, thereby ensuring the reliability and accuracy of the subsequent support and welding of the bus roof assembly 200.

[0075] In a feasible implementation manner, as Figure 5 shown, the pitch positioning mechanism 140 includes:

[0076] Pitch positioning plates 141, arranged on both sides in the width direction of the main body support frame 110, and a plurality of positioning holes 1411 are uniformly arranged on the pitch positioning plates 141;

[0077] Standard angle seats 142, in an L shape, the first end of the standard angle seat 142 is fixedly connected to the porous positioning platform 120, and the second end of the standard angle seat 142 is fixedly connected to the positioning holes 1411;

[0078] Among them, long strip holes 1421 are provided on both the first end and the second end of the standard angle seat 142.

[0079] It should be noted that a spacing positioning plate 141 is provided on both sides in the width direction of the main body support frame 110, so that the two ends of the porous positioning platform 120 in the length direction can be fixed, the uniformity of the force on the porous positioning platform 120 is improved, and then the accuracy and reliability of the support of the porous positioning platform 120 are ensured, and the qualification rate of the welding of the bus roof assembly 200 is improved.

[0080] It can be understood that since the porous positioning platform 120 is vertically arranged with the main body support frame 110, the L-shaped standard angle seat 142 is used to realize the fixed connection between the porous positioning platform 120 and the main body support frame 110 at a specific position. A plurality of positioning holes 1411 are uniformly arranged on the spacing positioning plate 141. In order to prevent the position of the porous positioning platform 120 from being between two adjacent positioning holes 1411, the two ends of the L-shaped standard angle seat 142 are arranged in the form of long strip holes 1421, so that after the bolt is initially fixed, the porous positioning platform 120 can be finely adjusted in the direction of the long strip holes 1421. After ensuring the accuracy of the position where the porous positioning platform 120 is located, the bolt is tightened to realize the fixation of the porous positioning platform 120, so that the reliability of the support and welding of the welding fixture 100 can be ensured. The other end of the standard angle seat 142 is directly fixedly connected to the porous positioning platform 120.

[0081] Figure 3 Schematic diagram of a porous positioning platform according to an embodiment of the present invention.

[0082] In a feasible implementation manner, as Figure 3 shown, the porous positioning platform 120 includes:

[0083] A base 121, which is arranged above the main body support frame 110 and is vertically arranged with the main body support frame 110. A slider 122 is provided on the side of the base 121 facing the main body support frame 110;

[0084] Arc positioning plates 123, a pair of arc positioning plates 123 are arranged on both sides in the width direction of the base 121, and the arc positioning plates 123 are detachably connected to the base 121.

[0085] Among them, the porous positioning platform 120 includes a base 121 and arc positioning plates 123 detachably connected to the base 121. A plurality of rows and columns of connection holes 1211 are arranged on the two side surfaces in the width direction of the base 121. Through the arrangement of the connection holes 1211, on the one hand, it is convenient for the standard angle seat 142 to be connected to the base 121 of the porous positioning platform 120, and on the other hand, the height of the arc positioning plates 123 on the base 121 can be adjusted. That is to say, according to the different models of the bus roof assembly 200 to be processed and welded, the different heights of the arc positioning plates 123 can be adaptively adjusted, further improving the applicable range of the welding fixture 100.

[0086] It should be noted that the radian positioning plate 123 can be directly cut according to the radian required by the bus roof assembly 200, and can be quickly replaced through the detachable connection between the base 121 and the radian positioning plate 123, so that the welding fixture 100 can be adapted to the use of more bus roof assemblies 200, reduce the number of sets of the welding fixture 100 used, reduce the production cost, and improve the production economy.

[0087] It can be understood that those skilled in the art are aware that the bus roof assembly 200 includes a top cross beam 210, short longitudinal beams 220 and side longitudinal beams 230, as Figure 2 shown. Therefore, a pair of radian positioning plates 123 are adopted, which can facilitate the support and positioning of the short longitudinal beams 220 on both sides of the top cross beam 210, further improve the positioning accuracy of the bus roof assembly 200, and improve the qualified rate after welding. Figure 2 This is only a schematic diagram of a bus roof assembly 200 for the convenience of explanation. The top cross beam 210, short longitudinal beams 220 and side longitudinal beams 230 in actuality may be different from this diagram, but the support and positioning and welding of the bus roof assembly 200 can be achieved through the adjustment of the porous positioning platform 120.

[0088] Among them, a plurality of weight reduction holes 1231 can be provided on the radian positioning plate 123. On the premise of ensuring the support strength, the overall weight of the porous positioning platform 120 can be reduced, facilitating the smoothness and reliability of the movement of the porous positioning platform 120 on the main body support frame 110.

[0089] In a feasible implementation manner, a guide rail 111 is provided on one side of the main body support frame 110 facing the base 121, and the guide rail 111 is matched with the slider 122.

[0090] Among them, as Figure 4 shown, a slider 122 is provided on one side of the base 121 facing the main body support frame 110. Usually, the sliders 122 are arranged on both sides in the length direction of the base 121. Correspondingly, guide rails 111 are provided on both sides in the length direction of the main body support frame 110. Through the cooperation of the guide rail 111 and the slider 122, the reciprocating movement of the porous positioning platform 120 on the main body support frame 110 can be realized, whether it is the movement driven by the power component 131 or the manual movement, which can improve the smoothness of the movement of the porous positioning platform 120 on the main body support frame 110.

[0091] Figure 6 Schematic diagram of the first positioning bracket according to an embodiment of the present utility model.

[0092] In a feasible implementation manner, as Figure 6As shown, a plurality of mounting holes 124 are provided on the side of the base 121 facing away from the main body support frame 110. The porous positioning platform 120 further includes:

[0093] A first positioning bracket 125, which is fixedly connected to the base through the mounting holes 124. A positioning groove is provided at the end of the first positioning bracket 125 away from the base. The positioning groove includes a first side wall, a second side wall, and a bottom wall;

[0094] A first positioning block 1261, which is arranged on the first side wall;

[0095] A movable positioning block 1262, which is arranged on the second side wall. The movable positioning block 1262 is detachably connected to the second side wall;

[0096] A cushion block 1263, which is arranged on the bottom wall.

[0097] Wherein, the first positioning bracket 125 is arranged between a pair of arc-shaped positioning plates 123 for supporting the top cross beam 210. At the same time, a plurality of mounting holes 124 are provided on the side of the base 121 facing the top cross beam 210, which is convenient for adjusting the position of the first positioning bracket 125 to realize the support of the first positioning bracket 125 for top cross beams 210 of different lengths. Usually, two first positioning brackets 125 are arranged in each porous positioning platform 120, and the first positioning brackets 125 are arranged in pairs in the length direction of the porous positioning platform 120.

[0098] It should be noted that a positioning groove is provided on the first positioning block 126, and the top cross beam 210 can be arranged in the positioning groove. Usually, the width of the positioning groove is greater than the width of the top cross beam 210, and the depth of the positioning groove is greater than the height of the top cross beam 210. In this way, the applicable range of the positioning groove is wider. When the positioning groove and the top cross beam 210 cannot be adapted or the height of the top cross beam 210 after being placed in the positioning groove does not meet the requirements, the first positioning block 1261 can be placed in the installation groove, the movable positioning block 1262 can be adjusted, and the cushion block 1263 can be placed to adjust the height of the top cross beam 210 and the clamping degree of the installation groove on the top cross beam 210 to ensure the positioning accuracy of the top cross beam 210.

[0099] Specifically, the positioning groove includes a first side wall and a second side wall that are oppositely arranged, and a bottom wall connecting the first side wall and the second side wall. By providing a first positioning block 1261 on the first side wall and a movable positioning block 1262 on the second side wall, the movable positioning block 1262 is detachably connected to the second side wall through a bolt. A long slot is provided on the movable positioning block 1262 to facilitate adjusting the position of the movable positioning block 1262, so as to adjust the distance between the first positioning block 1261 and the movable positioning block 1262, and thus be able to match different models of top crossbeams 210 and clamp the top crossbeam 210. Usually, a gasket is also provided below the spacer 1263. When it is necessary to adjust the height of the top crossbeam 210, different thickness gaskets are replaced to adapt to the adjustment of the height of the top crossbeam 210, so as to reduce production costs and improve the accuracy and reliability of the positioning of the top crossbeam 210.

[0100] Among them, the first positioning bracket 125 is L-shaped, that is, it includes a horizontal plate and a vertical plate arranged vertically. The horizontal plate is fixedly connected to the base 121. Such a setting can improve the simplicity of fixing the first positioning bracket 125 and reduce the difficulty of fixedly connecting the first positioning bracket 125 to the base 121. A connecting rib plate is provided between the horizontal plate and the vertical plate to improve the support strength of the first positioning bracket 125 and ensure the reliability of the operation of the first positioning bracket 125.

[0101] In a feasible implementation manner, the porous positioning platform 120 further includes:

[0102] A second positioning bracket 127, which is arranged at both ends in the length direction of the base 121, and the second positioning bracket 127 is located on one side in the width direction of the base 121;

[0103] A second positioning block 128, which is detachably connected to the second positioning bracket 127. The second positioning block 128 includes a connecting portion 1281 and a support groove 1282 provided on the connecting portion 1281. One end of the connecting portion 1281 is detachably connected to the second positioning bracket 127, and the support groove 1282 is located at the end of the connecting portion 1281 away from the second positioning bracket 127.

[0104] Among them, the second positioning brackets 127 are arranged at both ends in the length direction of the base 121, and are fixedly connected to the second positioning brackets 127 through the connection holes 1211 on the base 121. And the second positioning brackets 127 are arranged on the same side in the width direction of the base 121. This can ensure that the second positioning blocks 128 on the second positioning brackets 127 are on the same straight line. The support of the side longitudinal beam 230 of the bus roof assembly 200 through the second positioning blocks 128 can ensure the smoothness and symmetry of the support for the side longitudinal beam 230 and improve the reliability and welding quality of the welding.

[0105] It should be noted that the second positioning bracket 127 continues to extend in the length direction, that is, part of the second positioning bracket 127 is located outside the base 121, and small through holes are provided on the second positioning bracket 127 to facilitate the connection with the second positioning block 128. In this way, different second positioning blocks 128 can be replaced according to different inclination angles of the side longitudinal beam 230, thereby improving the applicable range of the welding tooling 100, reducing the number of sets of welding tooling 100 in the workshop, and improving production economy.

[0106] It can be understood that the second positioning block 128 includes a connecting portion 1281 and a support groove 1282 provided on the connecting portion 1281. The connecting portion 1281 is detachably connected to the second positioning bracket 127. The support groove 1282 is located at one end of the second positioning block 128 away from the second positioning bracket 127. The side longitudinal beam 230 is supported through the support groove 1282. Since the inclination angles of the side longitudinal beam 230 and the top cross beam 210 are different, it is necessary to replace the second positioning block 128 with a support groove 1282 having different inclination angles so that the welding tooling 100 is suitable for the support welding of different models of bus roof assemblies 200. It can be understood that the connecting portion and the support groove are integrally formed.

[0107] In a feasible implementation manner, the welding tooling 100 further includes:

[0108] A dimension positioning plate (not shown), which is arranged on the side surface of the main body support frame 110. According to the model of the bus roof, a plurality of porous positioning platforms 120 correspond to different positions on the positioning dimension plate.

[0109] Among them, a dimension positioning plate can be arranged on the side surface of the main body support frame 110 to facilitate the movement of the porous positioning platform 120 to the required position, without the need for workers to measure each time, improving the replacement efficiency of the porous positioning platform 120, and thus effectively improving the production efficiency.

[0110] It should be noted that through the movable setting of the porous positioning platform 120 in this application and the replaceable setting of its parts, the positioning requirements of the key dimensions of the bus roof beam assembly 200 can be met. On the one hand, it can reduce the measurement of spatial dimensions, thereby improving the production efficiency of the bus roof assembly 200; on the other hand, it can realize the rapid switching of the welding tooling 100 for different vehicle models, reduce the number of sets of welding tooling 100 in the workshop, reduce production costs, and improve economy. At the same time, through the setting of a power assembly 131, the length dimension of the bus roof assembly 200 can be effectively controlled, ensuring the accuracy and reliability of the positioning of the welding tooling 100.

[0111] In the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.

[0112] Those skilled in the art will readily conceive of other embodiments of the present utility model after considering the specification and practicing the present utility model disclosed herein. The present utility model is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include well-known knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and examples are only regarded as exemplary.

[0113] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A welding tool for a bus roof assembly, characterized in that: The welding tool comprises: Main support frame; A multi-hole positioning platform is arranged on the main body support frame. A plurality of the multi-hole positioning platforms can reciprocate in the length direction of the main body support frame. The multi-hole positioning platforms are configured to support the bus roof assembly.

2. The welding tool for the bus roof assembly according to claim 1, characterized in that: The welding tool also includes a length positioning mechanism, and the length positioning mechanism includes: A power assembly, part of which is connected to the main support frame, and part of which is fixedly connected to at least one of the porous positioning platforms; The positioning connecting rod is used to connect the last multi-hole positioning platform required for the current vehicle model and the redundant multi-hole positioning platforms including the power assembly.

3. The welding tool for the bus roof assembly according to claim 2, characterized in that: The power assembly comprises: A servo motor is arranged below the predetermined multi-hole positioning platform, and the output shaft of the servo motor is arranged toward one side of the main body support frame; A gear, fixedly disposed on the output shaft; A rack, arranged on a side of the main support frame facing the multi-hole positioning platform, the rack being meshed with the gear; The predetermined multi-hole positioning platform is set to be a multi-hole positioning platform that matches the length of the bus roof assembly.

4. The welding tool for the bus roof assembly according to claim 1, characterized in that: The welding tool also includes a spacing positioning mechanism, one end of which is fixedly connected to the multi-hole positioning platform, and the other end of the spacing positioning mechanism is fixedly connected to the main body support frame.

5. The welding tool for the bus roof assembly according to claim 4, characterized in that: The spacing positioning mechanism comprises: A spacing positioning plate is arranged on both sides of the main support frame in the width direction, and a plurality of positioning holes are evenly arranged on the spacing positioning plate; A standard angle seat is L-shaped, wherein a first end of the standard angle seat is fixedly connected to the multi-hole positioning platform, and a second end of the standard angle seat is fixedly connected to the positioning hole; Wherein, the first end and the second end of the standard angle seat are both provided with long holes.

6. The welding tool for the bus roof assembly according to claim 1, characterized in that: The multi-hole positioning platform comprises: A base is arranged above the main body support frame, and the base is arranged vertically to the main body support frame, and a slider is arranged on the side of the base facing the main body support frame; A pair of arc positioning plates are arranged on both sides of the base in the width direction, and the arc positioning plates are detachably connected to the base.

7. The welding tool for the bus roof assembly according to claim 6, characterized in that: A guide rail is provided on one side of the main body support frame facing the base, and the guide rail matches the sliding block.

8. The welding tool for the bus roof assembly according to claim 6, characterized in that: The base is provided with a plurality of mounting holes on one side away from the main support frame, and the multi-hole positioning platform further comprises: A first positioning bracket, fixedly connected to the base through the mounting hole, a positioning groove is provided on one end of the first positioning bracket away from the base, and the positioning groove includes a first side wall, a second side wall and a bottom wall; A first positioning block, disposed on the first side wall; A movable positioning block is arranged on the second side wall, and the movable positioning block is detachably connected to the second side wall; A cushion block is arranged on the bottom wall.

9. The welding tool for the bus roof assembly according to claim 6, characterized in that: The multi-hole positioning platform also includes: A second positioning bracket is arranged at two ends of the base in the length direction, and the second positioning bracket is located at one side of the base in the width direction; The second positioning block is detachably connected to the second positioning bracket. The second positioning block includes a connecting portion and a supporting groove arranged on the connecting portion. One end of the connecting portion is detachably connected to the second positioning bracket. The supporting groove is located at an end of the connecting portion away from the second positioning bracket.

10. The welding tool for a passenger car roof assembly according to any one of claims 1 to 9, characterized in that: The welding tool also includes: The dimension positioning plate is arranged on the side of the main body support frame. According to the model of the bus roof, the plurality of the multi-hole positioning platforms correspond to different positions on the dimension positioning plate.

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