Axle housing producing and machining equipment

Abstract

The invention belongs to the technical field of axle housing preparation, and discloses axle housing production and processing equipment which comprises an axle housing body, a reinforcing ring and a back cover which are oppositely arranged on the two opposite sides of the axle housing body, shaft heads arranged at the two ends of the axle housing body, and a large accessory and a small accessory which are arranged on the outer surface of the axle housing body. The axle housing body comprises two spliced housings which are spliced up and down and four triangular plates which are respectively arranged on two sides of the spliced housings; the processing equipment comprises an axle housing body welding device, a reinforcing ring and back cover welding device, a large accessory welding device, a shaft head welding device and a small accessory welding device; spot welding and full welding of an axle housing body, spot welding and full welding of a reinforcing ring and a back cover, spot welding and full welding of a large accessory, press fitting and full welding of a shaft head and spot welding and full welding of a small accessory can be achieved, the whole equipment is high in automation degree, the working intensity of operators is reduced, the spot welding and full welding matching mode is adopted, and the production efficiency is improved. Therefore, the welding precision of each part of the axle housing is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge housing preparation, and particularly relates to a production and processing equipment for bridge housing. Background Art

[0002] An automotive bridge housing is a basic component for installing a main reducer, a differential, half shafts, wheel hubs and a suspension. Its main functions are to support and protect the main reducer, the differential and the half shafts, etc. At the same time, the bridge housing is also one of the main components of the running gear. The automotive bridge housing and the driven axle together bear the vehicle mass, and fix the axial relative positions of the left and right driving wheels. In addition, when the vehicle is running, it bears various reaction forces, acting forces and torques transmitted from the driving wheels and transmits them to the vehicle frame through the suspension. However, the production of the bridge housing includes multiple different processes. Relying entirely on manual operation for processing is not only time-consuming and laborious, but also the accuracy and efficiency are not ideal, and further improvement is needed. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a production and processing equipment for bridge housing.

[0004] The present invention adopts the following technical solutions: A production and processing equipment for bridge housing, the bridge housing includes a bridge housing body, reinforcing rings and back covers oppositely arranged on opposite sides of the bridge housing body, axle heads arranged at both ends of the bridge housing body, and large accessories and small accessories arranged on the outer surface of the bridge housing body. The bridge housing body includes two spliced shells spliced up and down and four triangular plates respectively arranged on both sides of the spliced shells. The processing equipment includes a bridge housing body welding device, a reinforcing ring and back cover welding device, a large accessory welding device, an axle head welding device and a small accessory welding device; The bridge housing body welding device welds the two spliced shells and the four triangular plates to form the bridge housing body, and includes a splicing spot welding tooling for spot welding the two spliced shells and the four triangular plates into shape, a full welding tooling for full welding the spot-welded bridge housing body into shape, and a transfer mechanism for transferring the bridge housing body from the splicing spot welding tooling to the full welding tooling; The reinforcing ring and back cover welding device successively performs spot welding and full welding of the reinforcing ring and the back cover on the full-welded bridge housing body; The large accessory welding device successively performs large accessory spot welding and full welding on the bridge housing body after welding the reinforcing ring and the back cover, and includes a large accessory spot welding device for spot welding the large accessory on the bridge housing body; The axle head welding device presses the axle heads at both ends of the bridge housing body after completing the large accessory full welding and performs full welding on the pressed axle heads; The small accessory welding device successively performs spot welding and full welding of the small accessories on the bridge housing body after welding the axle heads.

[0005] Furthermore, the large accessory spot welding device includes a welding table, a fixing mechanism arranged on the welding table for fixing the bridge shell body, a support frame arranged on the welding table, a positioning mechanism movably arranged on the support base and above the fixing mechanism for fixing the large accessory, a moving seat arranged on the support frame, a lifting column movably arranged up and down in the moving seat for installing the positioning mechanism, a lateral moving mechanism arranged on the support frame for connecting and driving the lateral movement of the moving seat, and a lifting and moving mechanism arranged on the moving seat for connecting and driving the up and down movement of the lifting column.

[0006] Furthermore, the positioning mechanism includes a mounting seat connected to the lifting and moving mechanism, a positioning disk rotatably arranged on the mounting seat, a plurality of positioning tools circumferentially distributed on the positioning disk, and a rotating component arranged on the mounting seat for connecting and driving the rotation of the positioning disk. The plurality of positioning tools correspond to the plurality of large accessories one by one. The positioning tools position the relative large accessories at the welding position and perform spot welding with the bridge shell body.

[0007] Furthermore, the splicing shell includes a main body section and two mounting arms extending outward at both ends of the main body section. The splicing spot welding tooling includes a first base, a flipping frame rotatably arranged on the first base, a first clamping mechanism arranged on the flipping frame for clamping the main body sections of the two splicing shells, two second clamping mechanisms arranged on the flipping frame at intervals for clamping the two mounting arms of the two splicing shells respectively, and a flipping mechanism arranged on the first base for connecting and driving the flipping of the flipping frame. When spot welding the bridge shell body, the two splicing shells are spliced on the flipping frame through the first clamping mechanism and the two second clamping mechanisms, and then the triangular plate is placed on one side of the two opposite main body sections for spot welding. After the two triangular plates and the two splicing shells on one side of the bridge shell body are completed with spot welding, the flipping mechanism drives the flipping frame to flip, and then spot welding of the two triangular plates and the two splicing shells on the other side of the bridge shell body is carried out.

[0008] Furthermore, the first clamping mechanism includes two first clamping frames arranged oppositely up and down on the flipping frame, first clamping components respectively arranged on the two first clamping frames for clamping the main body sections of the relative splicing shells, and two first pressing components respectively arranged on the two first clamping frames for pressing the middle parts of the relative main body sections. The first clamping components include two first moving blocks movably arranged oppositely left and right on the first clamping frame, two first clamping wheels respectively arranged at the front ends of the two first moving blocks for clamping the relative main body section, and two first moving parts respectively arranged on the first clamping frame for connecting and driving the movement of the relative first moving blocks. The first pressing components are arranged between the two first clamping wheels.

[0009] Further, the first pressing assembly includes a first pressing head movably arranged up and down on the first clamping frame, a pressing block arranged at the front end of the first pressing head, and a first driving assembly arranged on the first clamping frame to connect and drive the movement of the first pressing head. The first pressing block and the two first clamping wheels are distributed in a triangle to clamp and fix the main section of the splicing shell.

[0010] Further, positioning holes are arranged on the back cover. The back cover and reinforcing ring welding device includes a first welding device for spot-welding the back cover and the reinforcing ring to both sides of the axle housing body respectively, and a second welding device for full-welding the spot-welded back cover and reinforcing ring. The first welding device includes a spot-welding frame, a welding seat movably arranged up and down on the spot-welding frame, a positioning ring arranged on the welding seat, a positioning post extending upward from the positioning ring into the positioning hole, a positioning frame arranged on one side of the welding seat, a positioning plate arranged at the upper end of the positioning frame and capable of flipping downward to position the back cover, a lifting mechanism arranged on the spot-welding frame to connect and drive the up-and-down movement of the welding seat, and two support brackets oppositely arranged on the spot-welding frame on both sides of the welding seat.

[0011] Further, the back cover includes a main body part arranged in a semicircle, an extension part extending downward from the lower end of the main body part, and a connecting part extending radially outward from the lower end of the extension part to connect with the axle housing body. An arc-shaped positioning groove extending inward is formed on the opposite surface of the positioning plate and the back cover. When the back cover is spot-welded, the positioning plate can flip downward until its lower end supports on the connecting part. At this time, the inner wall of the arc-shaped positioning groove is adapted to the outer peripheral surface of the extension part.

[0012] Further, the second welding device includes a base, a first gripping mechanism arranged on the base for gripping and driving the axle housing to rotate, a second gripping mechanism arranged on the base opposite to the first gripping mechanism, a first welding device for full-welding the reinforcing ring on one side of the base, and a second welding device for full-welding the back cover on one side of the base. The axle housing is rotatably arranged between the first gripping mechanism and the second gripping mechanism, so that the first welding device and the second welding device can simultaneously perform full-welding on the reinforcing ring and the back cover respectively.

[0013] Further, the axle head welding device includes a pressing device for press-fitting the axle head. The pressing device includes a pressing table, a fixed pressing seat arranged on the pressing table, a movable pressing seat movably arranged on the pressing table and moving back and forth relative to the fixed pressing seat, a support table arranged on the pressing table between the fixed pressing seat and the movable pressing seat, a first positioning sleeve arranged on one side of the support table and capable of abutting against the movable pressing seat, a second positioning sleeve arranged on the other side of the support table and capable of abutting against the fixed pressing seat, a first ejector rod arranged on the movable pressing seat and capable of abutting against the first positioning sleeve, a resetting member arranged on the fixed pressing seat and capable of abutting against the second positioning sleeve to drive the support table to move back and reset in the reverse direction, and a driving mechanism arranged on the pressing table to connect and drive the movement of the movable pressing seat.

[0014] As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are as follows: By defining the structural composition of the production and processing equipment, the present application sets up a bridge housing body welding device, a reinforcing ring and back cover welding device, a large accessory welding device, a hub welding device and a small accessory welding device to achieve spot welding and full welding of the bridge housing body, spot welding and full welding of the reinforcing ring and back cover, spot welding and full welding of large accessories, press-fitting and full welding of hubs, and spot welding and full welding of small accessories. The entire equipment has a high degree of automation, reduces the working intensity of operators, and adopts a combination of spot welding and full welding to ensure the welding accuracy of each component of the bridge housing. At the same time, the equipment can be applied to the preparation of bridge housings of different sizes and models, greatly expanding the scope of application of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the bridge housing body welding device Figure 1 ; Figure 3 is a schematic structural diagram of the bridge housing body welding device Figure 2 ; Figure 4 is a schematic structural diagram of the splicing spot welding tooling; Figure 5 is a schematic structural diagram of the first clamping mechanism; Figure 6 is a schematic structural diagram of the second clamping mechanism; Figure 7 is a schematic structural diagram of the bridge housing body full welding tooling; Figure 8 is a schematic structural diagram of the transfer mechanism; Figure 9 is a schematic structural diagram of the reinforcing ring and back cover welding device; Figure 10 is a schematic structural diagram of the first welding device; Figure 11 is a schematic structural diagram of the second welding device Figure 1 ; Figure 12 is a schematic structural diagram of the second welding device Figure 2 ; Figure 13 is a schematic structural diagram of the large accessory spot welding device Figure 1 ; Figure 14 is a schematic structural diagram of the large accessory spot welding device Figure 2 ; Figure 15 is a schematic structural diagram of the positioning mechanism Figure 1 ; Figure 16 Structural schematic of the positioning mechanism Figure 2 ; Figure 17 Structural schematic of the press-fitting device Figure 1 ; Figure 18 Structural schematic of the press-fitting device Figure 2 ; Figure 19 Structural schematic of the axle housing Figure 1 ; Figure 20 Structural schematic of the axle housing Figure 2 ; In the figure, 1 - Bridge housing body welding device, 2 - Reinforcing ring and back cover welding device, 3 - Large accessory welding device, 4 - Axle head welding device, 5 - Air tightness detection device, 6 - Small accessory welding device, 7 - Bridge housing, 8 - Ground rail, 9 - Multi-axis ground rail robot, 11 - Splicing spot welding tooling, 111 - First base, 112 - Turning frame, 113 - First clamping mechanism, 1131 - First clamping frame, 1132 - First clamping component, 11321 - First moving block, 11322 - First clamping wheel, 11323 - First moving part, 11324 - First guiding part, 1133 - First pressing component, 11331 - First pressing head, 11332 - Pressing block, 11333 - First driving component, 1134 - Protective cover, 1135 - Connecting plate, 114 - Second clamping mechanism, 1141 - Second clamping frame, 1142 - Second clamping component, 11421 - Second moving block, 11422 - Clamping block, 11423 - Second moving part, 1143 - Support block, 1144 - Second driving part, 115 - Turning mechanism, 1151 - Turning seat, 1152 - Turning component, 12 - Full welding tooling for bridge housing body, 121 - Second base, 122 - Rotating seat, 123 - Welding frame, 124 - Rotating part, 125 - Third clamping mechanism, 126 - Fourth clamping mechanism, 13 - Transfer mechanism, 131 - Frame, 132 - Transfer frame, 133 - Grabbing component, 1331 - Grabbing arm, 1332 - Grabbing claw, 1333 - Lateral moving part, 134 - Lateral driving component, 135 - Lifting driving component, 14 - Full welding equipment for bridge housing body, 15 - Transition frame, 21 - First welding device, 211 - Spot welding frame, 2111 - Slot, 212 - Welding seat, 213 - Positioning ring, 214 - Positioning column, 215 - Positioning frame, 216 - Positioning plate, 2161 - Arc-shaped positioning groove, 2162 - Hinge, 217 - Lifting mechanism, 2171 - Lifting part, 2172 - Lifting shaft, 2173 - Guide sleeve, 2174 - Guide rod, 2175 - Guide plate, 2176 - First protective sleeve, 2177 - Second protective sleeve, 218 - Support bracket, 2181 - Support groove, 2182 - Locking hole, 22 - Second welding device, 221 - Base, 2211 - Rotating area, 222 - First grasping mechanism, 2221 - First grasping seat, 2222 - Grasping component, 2223 - Rotating component, 2224 - Grasping shaft, 2225 - First pneumatic chuck, 2226 - Jaw, 2227 - First rotating motor, 2228 - First bevel gear, 2229 - Second bevel gear, 223 - Second grasping mechanism, 2231 - Second grasping seat, 2232 - Positioning thimble, 2233 - Moving component, 2234 - Moving slide rail, 2235 - Moving slider, 2236 - Moving cylinder, 2237 - Connecting block, 2238 - Groove, 224 - First welding equipment, 225 - Second welding equipment, 31 - Large accessory spot welding device, 32 - Large accessory full welding device33 - Welding table, 34 - Fixing mechanism, 341 - First fixing seat, 342 - Second fixing seat, 343 - Fixing shaft, 344 - Second pneumatic chuck, 345 - Fixing claw, 346 - Fixing center pin, 347 - Second rotating motor, 348 - Driving assembly, 349 - Support seat, 340 - Lifting assembly, 35 - Support frame, 36 - Positioning mechanism, 361 - Mounting seat, 362 - Positioning disk, 3621 - Mounting part, 363 - First positioning tooling, 3631 - Mounting plate, 3632 - Elastic positioning pin, 3633 - Limiting plate, 3634 - U-shaped limiting groove, 364 - Rotating assembly, 3641 - Rotating motor, 3642 - Connecting flange, 365 - Mounting assembly, 3651 - Mounting rod, 36511 - First mounting section, 36512 - Second mounting section, 3652 - First connecting piece, 36521 - First limiting hole, 36522 - First locking hole, 36523 - Limiting pin, 36524 - First connecting bolt, 3653 - Second connecting piece, 35631 - Second connecting hole, 36532 - Second connecting bolt, 37 - Moving seat, 38 - Lifting column, 39 - Transverse moving mechanism, 30 - Lifting and moving mechanism, 41 - Pressing device, 411 - Pressing table, 412 - Fixed pressing seat, 4121 - Fixed pressing seat body, 4122 - Fixed pressing block, 4123 - First pressing groove, 413 - Moving pressing seat, 4131 - Moving pressing seat body, 4132 - Moving pressing block, 4133 - Second pressing groove, 414 - Support table, 4141 - Support table body, 4142 - Support plate, 4143 - Lifting cylinder, 415 - First positioning sleeve, 416 - Second positioning sleeve, 417 - First ejector rod, 4171 - First ejector rod body, 4172 - Compression spring, 418 - Reset part, 419 - Driving mechanism, 4191 - Driving seat, 4192 - Driving oil cylinder, 4193 - Connecting head, 42 - Axle head full welding device, 71 - Axle housing body, 711 - Mounting hole, 712 - Spliced housing, 713 - Triangular plate, 714 - Main body section, 715 - Mounting arm, 72 - Reinforcing ring, 73 - Rear cover, 731 - Main body part, 732 - Extension part, 733 - Connecting part, 734 - Positioning hole, 74 - Large accessory, 75 - Small accessory, 76 - Axle head, 77 - Leaf spring seat, 771 - Positioning pin hole., Detailed implementation manners

[0016] The present invention will be further described below through specific implementation manners.

[0017] Refer to Figures 1 to 18As shown in the figure, a production and processing device for a bridge housing includes a bridge housing body welding device 1, a reinforcing ring and back cover welding device 2, a large accessory welding device 3, an axle head welding device 4, an airtightness detection device 5, and a small accessory welding device 6. Among them, a ground rail 8 is arranged along the conveying direction of the bridge housing production, and a plurality of multi-axis ground rail robots 9 are arranged on the ground rail 8. Through the multi-axis ground rail robots 9, the bridge housing 7 sequentially completes the welding of the triangular plate 713, the reinforcing ring 72, the back cover 73, the axle head 76, the large accessory 74, and the small accessory 75. Specifically, the bridge housing body welding device 1, the reinforcing ring and back cover welding device 2, the large accessory welding device 3, the axle head welding device 4, the airtightness detection device 5, and the small accessory welding device 6 are arranged at intervals along the extension direction of the ground rail 8.

[0018] Refer to Figures 19 to 20 As shown in the figure, the bridge housing 7 includes a bridge housing body 71, a reinforcing ring 72 and a back cover 73 oppositely arranged on opposite sides of the bridge housing body 71, axle heads 76 arranged at both ends of the bridge housing body 71, and large accessories 74 and small accessories 75 arranged on the outer surface of the bridge housing body 71. Among them, the bridge housing body 71 is formed with an installation hole 711 extending through from one side to the other side, including two splicing shells 712 spliced up and down and four triangular plates 713 respectively arranged on both sides of the splicing shells. Specifically, the splicing shell 712 includes a main body section 714 and two installation arms 715 extending outward at both ends of the main body section 714; further, the back cover 73 is provided with a positioning hole 734, including a main body part 731 arranged in a semicircle, an extension part 732 extending downward at the lower end of the main body part 731, and a connecting part 733 extending downward and outward from the lower end of the extension part 732 to be connected with the bridge housing body 71. The positioning hole 734 is arranged on the main body part 731.

[0019] The bridge housing body welding device 1 welds the two splicing shells 712 and the four triangular plates 713 to form the bridge housing body 71, including a splicing spot welding tooling 11 for spot welding the two splicing shells 712 and the four triangular plates 713, a bridge housing body full welding tooling 12 for full welding the welded bridge housing body 71, a transfer mechanism 13 for transferring the bridge housing body 71 from the splicing spot welding tooling 11 to the bridge housing body full welding tooling 12, a bridge housing body full welding device 14 for full welding the bridge housing body 71, and a transition frame 15 arranged on one side of the bridge housing body full welding tooling 12. Specifically, the structure of the bridge housing body welding device 1 is defined. First, the splicing shells 712 and the four triangular plates 713 are spot welded into shape, and then full welding is carried out, thereby improving the welding accuracy of the bridge housing body 71; specifically, the bridge housing body full welding device 14 is a commonly used full welding device in the field of bridge housing 7 preparation, and no further elaboration is made here.

[0020] The splicing spot welding tooling 11 includes a first base 111, a turnover frame 112 rotatably arranged on the first base 111, a first clamping mechanism 113 arranged on the turnover frame 112 for clamping two splicing shell body segments 714, two second clamping mechanisms 114 arranged at intervals on the turnover frame 112 for clamping two mounting arms 715 of the two splicing shells respectively, and a turnover mechanism 115 arranged on the first base 111 for connecting and driving the turnover of the turnover frame 112. When spot welding the axle housing body 71, the two splicing shells 712 are spliced up and down on the turnover frame 112 through the first clamping mechanism 113 and the two second clamping mechanisms 114, and then the triangular plate 713 is placed on one side of the two relatively upper and lower body segments 714 for spot welding. After the two triangular plates 713 and the two splicing shells 712 on one side of the axle housing body 71 are completed with spot welding, the turnover mechanism 115 drives the turnover frame 112 to turn over, and then spot welding of the two triangular plates 713 and the two splicing shells 712 is carried out on the other side of the axle housing body 71, thereby completing the spot welding work of the axle housing body 71. Among them, the two second clamping mechanisms 114 can be arranged to move left and right on the turnover frame 112 to adapt to the welding of axle housing bodies 71 of different sizes and models.

[0021] The first clamping mechanism 113 includes two first clamping frames 1131 arranged relatively up and down on the turnover frame 112, two first clamping components 1132 respectively arranged on the two first clamping frames 1131 for clamping the relatively spliced shell body segments 714, two first pressing components 1133 respectively arranged on the two first clamping frames 1131 for pressing the middle part of the relatively body segments 714, two protective covers 1134 respectively arranged on the two first clamping frames 1131 for protecting the first clamping components 1132 and the first pressing components 1133 on the same side, and a connecting plate 1135 connecting the two first clamping frames 1131. Among them, the arrangement of the connecting plate 1135 can support the two spliced shells 712; when the two spliced shells 712 are spliced, the main body segments 714 of the two relatively upper and lower spliced shells 712 are initially spliced and positioned through the cooperation of the two first clamping components 1132, and then the first pressing component 1133 presses the middle part of the main body segment 714 to make the spliced shell 71 stressed evenly, ensuring that the splicing part of the triangular plate 713 is infinitely close to being airtight, ensuring the subsequent installation, spot welding and full welding work of the triangular plate 713, and improving the yield rate of the axle housing body 71; specifically, a spot welding area is formed between the two first clamping frames 1131, which is convenient for spot welding between the triangular plate 713 and the two relatively upper and lower body segments 714.

[0022] The first clamping assembly 1132 includes two first moving blocks 11321 that are movably arranged on the first clamping frame 1131 and are relatively disposed left and right, two first clamping wheels 11322 respectively arranged at the front ends of the two first moving blocks 11321 for clamping the relative main body section 714, two first moving members 11323 arranged on the first clamping frame 1131 for connecting and driving the relative first moving blocks 11321 to move, and two first guiding members 11324 arranged on the first clamping frame 1131 for guiding the movement of the two first moving blocks 11321 respectively. Among them, two first pressing assemblies 1133 are arranged between the two first clamping wheels 11322, and the first clamping wheels 11322 are rotatably arranged at the front ends of the first moving blocks 11321; specifically, the first moving member 11323 can adopt a cylinder, an oil cylinder or a motor cooperating with a screw-nut pair to realize the movement of the first moving block 11321. The above method is a common driving and moving method in the mechanical field, and no further elaboration is made on its specific selection and structure here.

[0023] The first pressing assembly 1133 includes a first pressing head 11331 that is movably arranged up and down on the first clamping frame 1131, a pressing block 11332 arranged at the front end of the first pressing head 11331, and a first driving assembly 11333 arranged on the first clamping frame 1131 for connecting and driving the first pressing head 11331 to move. Among them, the pressing block 11332 and the two first clamping wheels 11322 on the same side are distributed in a triangular shape to clamp and fix the main body section 714 of the splicing shell 712; specifically, the first driving assembly 11333 can adopt a cylinder, an oil cylinder or a motor cooperating with a screw-nut pair to realize the movement of the first pressing head 11331. The above method is a common driving and moving method in the mechanical field, and no further elaboration is made on its specific selection and structure here.

[0024] The second clamping mechanism 114 includes two second clamping frames 1141 disposed oppositely up and down on the flipping frame 112, two second clamping components 1142 disposed oppositely left and right on the second clamping frames 1141 for clamping the relative mounting arms 715, a support block 1143 movably disposed on the two second clamping frames 1141, and a second driving member 1144 disposed on one second clamping frame 1141 for connecting and driving the support block 1143 to move. Wherein, a spot welding area is formed between the two second clamping frames 1141, facilitating spot welding between the two oppositely up and down mounting arms 715. When the two splicing shells 712 are spliced, the support block 1143 moves between the two second clamping frames 1141 to support the mounting arms 715 of the assembled shell 712; when the two splicing shells 712 are clamped and fixed by the first clamping component 1132, the first pressing component 1133 and the second clamping component 1142, the support block 1143 can move reversely under the action of the second driving member 1144 to prevent affecting the spot welding between the two oppositely up and down mounting arms 715; specifically, the second driving member 1144 can adopt a cylinder, an oil cylinder or a motor cooperating with a lead screw nut pair to realize the movement of the support block 1143. The above methods are common driving and moving methods in the mechanical field, and no further details are given here about their specific selection and structure.

[0025] The second clamping component 1142 includes a second moving block 11421 movably disposed on the second clamping frame 1141, a clamping block 11422 disposed at the front end of the second moving block 11421, and a second moving member 11423 disposed on the second clamping frame 1141 for connecting and driving the second moving block 11421 to move. Specifically, in actual operation, according to the model of the axle housing body 71, the number of clamping blocks 11422 can be increased, and the number of second moving blocks 11421 and second moving members 11423 can be correspondingly increased to adapt to mounting arms 715 of different lengths; the second moving member 11423 can adopt a cylinder, an oil cylinder or a motor cooperating with a lead screw nut pair to realize the movement of the second moving block 11421. The above methods are common driving and moving methods in the mechanical field, and no further details are given here about their specific selection and structure.

[0026] The flipping mechanism 115 includes two flipping seats 1151 oppositely arranged on the first base 111 for mounting the flipping frame 112, and a flipping component 1152 arranged on one flipping seat 1151 to connect and drive the flipping of the flipping frame 112. Among them, both ends of the flipping frame 112 are respectively mounted on the two flipping seats 1151 through two bearings. The flipping component 1152 can adopt a servo motor to drive the flipping frame 112 to rotate. When the two splicing shells 712 are spliced, the flipping component 1152 drives the flipping frame 112 to be inclined and arranged between the two flipping seats 1151, so as to facilitate workers to perform splicing and spot welding; after spot welding is completed on both sides of the axle housing body 71, the flipping component 1152 drives the flipping frame 112 to be in a horizontal state, which is convenient for grasping and transferring the axle housing body 71.

[0027] The full welding tooling 12 for the axle housing body includes a second base 121 arranged on one side of the first base 111, two rotating seats 122 oppositely arranged on the second base 121, a welding frame 123 rotatably arranged between the two rotating seats 122, a rotating member 124 arranged on the rotating seat 122 to connect and drive the rotation of the welding frame 123, a third clamping mechanism 125 arranged on the welding frame 123 for fixing the main body parts 731 of the two splicing shells, and two fourth clamping mechanisms 126 arranged at intervals on the welding frame 123 for respectively fixing the two mounting arms 715 of the two splicing shells. Among them, the structure of the third clamping mechanism 125 is the same as that of the first clamping mechanism 113, and the structure of the fourth clamping mechanism 126 is the same as that of the second clamping mechanism 114, so no further elaboration will be made here; specifically, the rotating member 124 can adopt a servo motor to drive the welding frame 123 to rotate 180° to turn over the axle housing body 71 on the welding frame 123, so as to realize full welding of the front and back sides of the axle housing body 71.

[0028] The transfer mechanism 13 includes a frame 131, a transfer frame 132 movably arranged on the frame 131, a grasping component 133 arranged on the transfer frame 132 for grasping the axle housing body 71, a lateral driving component 134 arranged on the frame 131 for driving the transfer frame 132 to move horizontally, and a lifting driving component 135 arranged on the frame 131 for driving the transfer frame 132 to move up and down. Among them, the lateral driving component 134 and the lifting driving component 135 are common structures in the field of multi-axis movement of components, and the motor and gear-rack cooperation method can be adopted to realize the horizontal movement and up and down movement of the transfer frame 132, so no further elaboration will be made on its specific structure here.

[0029] The grasping assembly 133 includes two grasping arms 1331 that can move towards or away from each other and are arranged on the transfer rack 132, two grasping claws 1332 arranged on the grasping arms 1331 and used to grasp both ends of the axle housing body 71 respectively, and two lateral moving members 1333 arranged on the transfer rack 132 and used to drive the two grasping arms 1331 to move respectively. Among them, the grasping claws 1332 adopt pneumatic grippers, and a grasping groove extending inwards is formed on the surface opposite to the axle housing body 71, and the installation arm 715 of the relative splicing housing 712 can be embedded in the grasping groove; specifically, two sets of grasping assemblies 133 are provided, and the two grasping assemblies 133 are arranged oppositely on both sides of the transfer rack 132. When one grasping assembly grasps and moves the axle housing body 71 on the flipping rack 112 to the welding rack 123, the other grasping assembly simultaneously moves the axle housing body 71 on the welding rack 123 to the transition rack 15; further, the lateral moving member 1333 can adopt the method of a motor cooperating with a gear and rack to realize the movement of the grasping arm 1331, and no further elaboration is made on its specific structure here.

[0030] When welding the axle housing body 71, first spot-weld the two splicing housings 712 and the four triangular plates 713 on the splicing spot-welding fixture 11, and then transfer them to the welding rack 123, and the full-welding of the axle housing body 71 that has completed spot-welding is carried out by the axle housing body full-welding device 14; the specific steps are as follows: Step 1, the flipping mechanism 115 controls the flipping rack 112 to be inclined, and according to the size of the axle housing body 71, adjusts the positions of the two second clamping mechanisms 114 so that they can be opposite to the installation arms 715 of the splicing housing 712, and supports the main section 714 of one splicing housing 712 on the first clamping component 1132 located below. At this time, the two installation arms 715 just support on the two second clamping components 1142 located below. Step 2, splice the other splicing housing on the splicing housing 712 located below, and then control the actions of the first clamping component, the first pressing component, the two second clamping components and the first pressing component 1133 located above to clamp and fix the two spliced splicing housings 712. At this time, the worker can carry out spot-welding between the two triangular plates 713 and the two installation arms 715 on one side of the axle housing body 71. When the two triangular plates 713 and the two splicing housings 712 on one side of the axle housing body 71 are completed with spot-welding, the flipping mechanism 115 drives the flipping rack 112 to flip 180°, and then carry out spot-welding between the two triangular plates 713 and the upper and lower opposite installation arms 715 on the other side of the axle housing body 71. Step 3: The flipping mechanism 115 controls the flipping frame 112 to flip to a horizontal state. The lateral driving assembly 134 and the lifting driving assembly 135 cooperate to enable the gripping assembly 133 on the transfer frame 132 near the flipping frame 112 to grip the bridge housing body 71 that has completed spot welding on the flipping frame 112 and move it to the welding frame 123. The full welding of one side of the bridge housing body 71 is performed by the full welding equipment 14 for the bridge housing body. When the full welding of one side of the bridge housing body 71 is completed, the rotating member 124 drives the welding frame 123 to flip 180° to perform full welding on the other side of the bridge housing body 71, so as to complete the full welding of the bridge housing body 71. When the bridge housing body 71 is transferred from the flipping frame 112 to the welding frame 123, the gripping assembly 133 on the other side of the transfer frame 132 will simultaneously grip the bridge housing body 71 that has completed full welding on the welding frame 123 and move it into the transition frame 15, so that the bridge housing body 71 that has completed full welding enters the strengthening ring and back cover welding device 2 through the transition frame 15.

[0031] The strengthening ring and back cover welding device 2 performs spot welding and full welding of the strengthening ring 72 and the back cover 73 on the bridge housing body 71 that has been formed by full welding in sequence, including a first welding device 21 for spot welding the back cover 73 and the strengthening ring 72 on both sides of the bridge housing body 71 respectively and a second welding device 22 for performing full welding on the spot-welded back cover 73 and strengthening ring 72.

[0032] The first welding device 21 includes a spot welding frame 211, a welding seat 212 that is vertically movably arranged on the spot welding frame 211, a positioning ring 213 arranged on the welding seat 212, a positioning post 214 arranged on the positioning ring 213 and extending upward into the positioning hole 734, a positioning frame 215 arranged on one side of the welding seat 212, a positioning plate 216 arranged at the upper end of the positioning frame 215 and capable of being turned downward to position the back cover 73, a lifting mechanism 217 arranged on the spot welding frame 211 to connect and drive the welding seat 212 to move up and down, and two support brackets 218 oppositely arranged on the spot welding frame 211 and located on both sides of the welding seat 212. Among them, the support bracket 218 is formed with a V-shaped support groove 2181 extending downward from its upper end. Both ends of the axle housing body 71 can be supported in the two support grooves 2181. Through the arrangement of the two support brackets 218, the position of the axle housing body 71 just entering the first welding device 21 is corrected to ensure the subsequent spot welding of the reinforcing ring 72 and the back cover 73. Specifically, an inwardly extending arc-shaped positioning groove 2161 is formed on the opposite surface of the positioning plate 216 and the back cover 73. When the back cover 73 is spot welded, the positioning plate 216 can be turned downward until its lower end supports on the connecting portion 733 to position the back cover 73. At this time, the inner wall of the arc-shaped positioning groove 2161 is adapted to the outer peripheral surface of the extending portion 732. The positioning post 214 and the positioning plate 216 are used to position the spot welding position of the back cover 73, improving the accuracy of the spot welding position of the back cover 73 and ensuring the airtightness of the prepared axle housing 7. Further, the positioning plate 216 is turnably arranged at the upper end of the positioning frame 215 through a hinge 2162, and the positioning ring 213 is detachably arranged on the welding seat 212 through bolts, so as to facilitate replacing the positioning plate 216 and the positioning ring 213 with corresponding sizes according to different models and sizes of the axle housing 7, improving the applicable range of the first welding device 21.

[0033] The lifting mechanism 217 includes a lifting member 2171 disposed on the spot welding frame 211, a lifting shaft 2172 having one end connected to the lifting member 2171 and the other end extending upward to be connected to the welding seat 212, a plurality of guide sleeves 2173 circumferentially distributed on the spot welding frame 211, a plurality of guide rods 2174 respectively movably disposed in the plurality of guide sleeves 2173 and having upper ends connected to the welding seat 212, a guide plate 2175 connected to the lower ends of the plurality of guide rods 2174, a first protective sleeve 2176 sleeved on the outer periphery of the lifting shaft 2172, and a plurality of second protective sleeves 2177 respectively sleeved on the outer peripheries of the plurality of guide rods 2174. Among them, the first protective sleeve 2176 and the second protective sleeve 2177 are made of flexible rubber to protect the lifting shaft 2172 and the guide rods 2174, preventing the splashed welding slag from damaging them during the spot welding process. Specifically, the lifting member 2171 adopts a cylinder or other structure that can drive the lifting shaft 2172 to move up and down. When spot welding the reinforcing ring 72 and the back cover 73, the lifting member 2171 drives the welding seat 212 to move upward to the highest position, so that both ends of the axle housing body 71 are respectively separated from the relative support brackets 218, ensuring that the reinforcing ring 72 and the back cover 73 are stably spot welded. Further, when the welding seat 212 descends to the lowest position, the first protective sleeve 2176 and the second protective sleeve 2177 are in a compressed state.

[0034] The support bracket 218 is movably disposed on the spot welding frame 211. Among them, a strip-shaped hole 2111 extending along the moving direction of the support bracket 218 is formed on the top surface of the spot welding frame 211, and a locking hole 2182 opposite to the strip-shaped hole 2111 is formed at the bottom of the support bracket 218. When the support bracket 218 is fixed, bolts are sequentially passed through the locking hole 2182 and the strip-shaped hole 2111, and a nut is used to lock and fix the support bracket 218. During spot welding, the distance between the two support brackets 218 can be adjusted according to different sizes and models of the axle housing 7 to ensure the support of the support brackets 218 for the axle housing body 71.

[0035] The second welding device 22 includes a base 221, a first gripping mechanism 222 disposed on the base 221 for gripping and driving the axle housing body 71 to rotate, a second gripping mechanism 223 disposed on the base 221 opposite to the first gripping mechanism 222, a first welding device 224 located on one side of the base 221 for full welding of the reinforcing ring 72, and a second welding device 225 located on one side of the base 221 for full welding of the back cover 73. When the reinforcing ring 72 and the back cover 73 are fully welded, the axle housing body 71 is rotatably disposed between the first gripping mechanism 222 and the second gripping mechanism 223, so that the first welding device 224 and the second welding device 225 respectively and simultaneously perform full welding on the reinforcing ring 72 and the back cover 73. Among them, the base 221 is formed with a rotation area 2211 extending downward from its top for the rotation of the axle housing body 71; specifically, the first welding device 224 and the second welding device 225 are common welding devices in the field of axle housing preparation, and their specific structures will not be further described here.

[0036] The first gripping mechanism 222, opposite to the reinforcing ring 72, includes a first gripping seat 2221 disposed on the base 221, a gripping component 2222 rotatably disposed on the first gripping seat 2221 for gripping the axle housing body 71, and a rotating component 2223 disposed on the first gripping seat 2221 for driving the gripping component 2222 to rotate.

[0037] The gripping component 2222 includes a gripping shaft 2224 rotatably disposed on the first gripping seat 2221, a first pneumatic chuck 2225 disposed at the front end of the gripping shaft 2224, and a plurality of jaws 2226 circumferentially distributed on the first pneumatic chuck 2225 for clamping or releasing the axle housing body 71. Among them, the gripping shaft 2224 is rotatably disposed on the first gripping seat 2221 through a bearing. When the axle housing body 71 is gripped, the jaws 2226 can extend into the mounting hole 711 and move outward under the action of the first pneumatic chuck 2225 to abut against the inner wall of the mounting hole 711 to grip and fix the axle housing body 71; specifically, the first pneumatic chuck 2225 adopts a four-jaw pneumatic chuck, and four jaws 2226 are provided.

[0038] The rotating component 2223 includes a first rotating motor 2227 disposed on the first gripping seat 2221, a first bevel gear 2228 disposed on the output shaft of the first rotating motor 2227, and a second bevel gear 2229 disposed on the gripping shaft 2224 and meshing with the first bevel gear 2228. By defining the structure of the rotating component 2223, the rotation of the gripping shaft 2224 is realized by the meshing of the first bevel gear 2228 and the second bevel gear 2229, reducing the friction in the transmission process, making the rotation of the axle housing body 71 stable, and ensuring the full welding of the reinforcing ring 72 and the back cover 73 by the first welding device 224 and the second welding device 225.

[0039] The second gripping mechanism 223, opposite to the back cover 73, includes a second gripping seat 2231 disposed on the base 221 opposite to the first gripping seat 2221, a positioning thimble 2232 disposed on the second gripping seat 2231 for supporting and clamping the back cover 73, and a moving component 2233 disposed on the base 221 to drive the second gripping seat 2231 to move back and forth relative to the first gripping seat 2221. Among them, an inwardly extending groove 2238 is formed on the opposite surface of the positioning thimble 2232 and the back cover 73; specifically, the moving component 2233 includes two moving slide rails 2234 oppositely disposed on the base 221, two moving sliders 2235 oppositely disposed at the bottom of the second gripping seat 2231 and respectively cooperating with the two moving slide rails 2234, a moving cylinder 2236 disposed on the base 221, and a connecting block 2237 disposed at the front end of the moving cylinder 2236 and connected to the second gripping seat 2231; when the reinforcing ring 72 is fully welded to the back cover 73, the manipulator moves the bridge shell body 71 from the welding seat 212 to the first gripping mechanism 222, so that a plurality of jaws 2226 extend into the mounting holes 711, and then the first pneumatic chuck 2225 controls the plurality of jaws 2226 to move outward and expand to abut against the inner wall of the mounting hole 711 to fix the bridge shell body 71. Then, the moving component 2233 controls the positioning thimble 2232 to move in the direction close to the back cover 73, so that its front end abuts against the outer surface of the back cover 73, completing the clamping of the bridge shell body 71; finally, the rotating component 2223 cooperates with the first welding device 224 and the second welding device 225 to simultaneously complete the full welding of the reinforcing ring 72 and the back cover 73.

[0040] Based on the above, the spot welding and full welding of the reinforcing ring and the back cover by the welding device 2 for the reinforcing ring and the back cover specifically include the following steps: Step 1: Move the bridge shell body 71 so that its two ends are respectively supported on the two support brackets 218. The lifting mechanism 217 works to drive the welding seat 212 to move upward so that the bridge shell body 71 is supported on the welding seat 212. At this time, the two ends of the bridge shell body 71 are separated from the relative support brackets 218. Step 2: Spot weld the reinforcing ring 72 on one side of the bridge shell body 71. The lifting mechanism 217 works to drive the welding seat 212 to move downward to reset. The two ends of the bridge shell body 71 are re - supported on the two support brackets 218, and then the bridge shell body 71 is flipped 180° on the two support brackets 218. The lifting mechanism 217 continues to work to drive the welding seat 212 to move upward so that the bridge shell body 71 is supported on the welding seat 212. At this time, the positioning ring 213 can be embedded in the reinforcing ring 72 to perform an initial positioning of the bridge shell body 71. Step 3: Align the positioning hole 734 on the back cover 73 with the positioning post 214, and then move the back cover 73 downward so that it is supported on the bridge shell body 71. Flip the positioning plate 216 downward to position the back cover 73. At this time, the back cover 73 can be spot welded to the bridge shell body 71 through spot welding settings. Step 4: The manipulator moves the axle housing body 71 with the back cover 73 and the reinforcing ring 72 spot-welded to the first gripping mechanism 222, enabling multiple jaws 2226 to extend into the mounting holes 711. Then, the first pneumatic chuck 2225 controls the multiple jaws 2226 to move outward and expand to abut against the inner wall of the mounting holes 711 to fix the axle housing body 71. Next, the moving assembly 2233 controls the positioning ejector pin 2232 to move in the direction close to the back cover 73, making its front end abut against the outer surface of the back cover 73, thus completing the clamping of the axle housing body 71. Step 5: The rotating assembly 2223 operates to drive the gripping shaft 2224 to rotate, thereby driving the axle housing body 71 to rotate. At this time, the first welding device 224 and the second welding device 225 can respectively and simultaneously perform full welding on the reinforcing ring 72 and the back cover 73, completing the full welding of the back cover 73 and the reinforcing ring 72.

[0041] The large accessory welding device 3 performs spot welding and full welding on the axle housing body 71 with the reinforcing ring 72 and the back cover 73 fully welded in sequence, including a large accessory spot welding device 31 for spot welding the large accessory 74 on the axle housing body 71 and a large accessory full welding device 32 for full welding the large accessory 74. Among them, the large accessory full welding device 32 is a common large accessory full welding equipment in the field of axle housing preparation, and no further elaboration is made here.

[0042] The large accessory spot welding device 31 includes a welding table 33, a fixing mechanism 34 arranged on the welding table 33 for fixing the axle housing body 71, a support frame 35 arranged on the welding table 33, a positioning mechanism 36 movably arranged on the support frame 35 above the fixing mechanism 34 for fixing the large accessory 74, a moving seat 37 arranged on the support frame 35, a lifting column 38 movably arranged up and down in the moving seat 37 for installing the positioning mechanism 36, a lateral moving mechanism 39 arranged on the support frame 35 for connecting and driving the lateral movement of the moving seat 37, and a lifting and moving mechanism 30 arranged on the moving seat 37 for connecting and driving the up and down movement of the lifting column 38; specifically, the lateral moving mechanism 39 and the lifting and moving mechanism 30 can be realized by the cooperation of a motor with gears and racks, which is a common structure in the field of multi-axis movement of components, and no further elaboration is made here.

[0043] The fixing mechanism 34 includes a first fixing base 341 arranged on the welding table 33, a second fixing base 342 that can move back and forth relative to the first fixing base 341, a fixing shaft 343 rotatably arranged on the first fixing base 341, a second pneumatic chuck 344 arranged at the front end of the fixing shaft 343, a plurality of fixing claws 345 circumferentially arranged on the second pneumatic chuck 344, a fixing center pin 346 arranged on the second fixing base 342 opposite to the fixing shaft 343, a second rotating motor 347 arranged on the first fixing base 341 to connect and drive the fixing shaft 343 to rotate, a driving assembly 348 arranged on the welding table 33 to connect and drive the second fixing base 342 to move, a supporting base 349 that can move up and down on the welding table 33, and a lifting assembly 340 arranged on the welding table 33 to connect and drive the supporting base 349 to move up and down. When welding the large accessory 74, the axle housing body 71 is moved to the supporting base 349, and then the lifting assembly 340 controls the supporting base 349 to move upward to the fixed position. The second pneumatic chuck 344 controls the plurality of fixing claws 345 to move inward simultaneously to fix the end of the axle housing body 71. The driving assembly 348 controls the second fixing base 342 to move in the direction close to the first fixing base 341, so that the fixing center pin 346 is embedded into the end of the other end of the axle housing body 71. Then the lifting assembly 340 controls the supporting base 349 to move downward to reset. At this time, the axle housing body 71 is fixed between the fixing center pin 346 and the plurality of fixing claws 345, and then the spot welding of the large accessory 74 can be carried out. For different welding positions of different large accessories 74, the second rotating motor 347 can drive the fixing shaft 343 to rotate, thereby driving the axle housing body 71 to flip, so that the welding position of the large accessory 74 rotates to the appropriate position to cooperate with the positioning mechanism 36 to weld the large accessory 74. Specifically, the driving assembly 348 adopts the cooperation mode of a motor, a gear and a rack, which is a common mode in the mechanical field, and the specific structural composition and working principle thereof will not be further elaborated here; the lifting assembly 340 can adopt a cylinder or other structures that can realize the up and down movement of the supporting base 349, which belongs to the common structures in mechanical equipment, and the specific selection and working principle thereof will not be further elaborated here.

[0044] The positioning mechanism 36 includes a mounting seat 361 connected to the lifting column 38, a positioning disk 362 rotatably arranged on the mounting seat 361, a plurality of positioning toolings circumferentially distributed on the positioning disk 362, a rotating assembly 364 arranged on the mounting seat 361 to connect and drive the positioning disk 362 to rotate, and a plurality of mounting assemblies 365 arranged on the positioning disk 362 for mounting the plurality of positioning toolings. The plurality of positioning toolings correspond to the plurality of large accessories 74 one by one. The positioning toolings position the large accessory 74 relative to the welding position and weld it to the axle housing body 71. Specifically, the rotating assembly 364 includes a rotating motor 3641 arranged on the mounting seat 361 and a connecting flange 3642 arranged on the output shaft of the rotating motor 3641 and connected to the positioning disk 362.

[0045] The installation component 365 includes an installation rod 3651 disposed on the outer peripheral surface of the positioning disk 362, a first connecting member 3652 disposed between the installation rod 3651 and the positioning disk 362, and a second connecting member 3653 disposed between the installation rod 3651 and the relative positioning tooling. Wherein, the positioning disk 362 is formed with an installation portion 3621 extending inward from its outer peripheral surface and connected to the installation rod 3651; specifically, the installation rod 3651 includes a first installation section 36511 connected to the installation portion 3621 and a second installation section 36512 connected to the first installation section 36511 and extending outward for installing the positioning tooling. When welding the large accessory 74, according to the structure of the welded large accessory 74, the corresponding positioning tooling is selected, and then the positioning tooling is installed on the installation rod 3651, so that when the large accessory 74 is installed, the corresponding positioning tooling can be selected by rotating the positioning disk 362. The operation method is simple, effectively improving the installation efficiency of the large accessory 74.

[0046] The first connecting member 3652 includes a first limiting hole 36521 disposed on the installation portion 3621, two first locking holes 36522 disposed on the installation portion 3621 on both sides of the first limiting hole 36521, a limiting pin 36523 disposed in the first limiting hole 36521, a second limiting hole on the first installation section 36511 for the limiting pin 36523 to be embedded, two first connection holes spaced on the first installation section 36511 and opposite to the two first locking holes 36522, and two first connection bolts 36524 respectively passing through the two first connection holes and threadedly connected to the relative first locking holes 36522.

[0047] The second connecting member 3653 includes a second connection hole 36531 extending along its length direction on the second installation section 36512 and a second connection bolt 36532 movably disposed in the second connection hole 36531 and connected to the relative positioning tooling. By defining the setting of the second connection hole 36531, it is convenient to adjust the position of the relative positioning tooling according to the welding position of the large accessory 74.

[0048] The spot welding process of the large accessory 74 is specifically as follows: Step 1: Move the axle housing body 71 to the support seat 349, and then the lifting component 340 controls the support seat 349 to move upward to the clamping position. The second pneumatic chuck 344 controls multiple fixing claws 345 to move inward simultaneously to clamp the end of the axle housing body 71. The driving component 348 controls the second fixed seat 342 to move along the direction close to the first fixed seat 341, so that the fixed ejector pin 346 is embedded in the end of the other end of the axle housing body 71. Then, the driving component 348 controls the support seat 349 to move downward to reset. At this time, the axle housing body 71 is fixed between the fixed ejector pin 346 and the multiple fixing claws 345; Step 2: The transverse moving mechanism 39 and the lifting and moving mechanism 30 cooperate to perform transverse movement and lifting movement on the mounting seat 361, and cooperate with the rotating assembly 364 to drive the positioning disc 362 to rotate, so that the positioning tooling of the large attachment 74 to be welded on the positioning disc 362 moves to a position opposite to the welding position of the large attachment 74 to be welded; Step 3: Place the large attachment 74 to be welded in the positioning tooling. Under the action of the positioning tooling, the large attachment 74 to be welded is just placed at the welding position. At this time, spot welding can be performed on the large attachment 74 to be welded; Step 4: Repeat Step 2 and Step 3 to achieve spot welding of multiple large attachments 74.

[0049] When the large attachment 74 to be welded is a leaf spring seat 77, the first positioning tooling 363 includes a mounting plate 3631 connected to the opposite mounting rod 3651, an elastic positioning pin 3632 arranged in the middle of the mounting plate 3631, a limiting plate 3633 arranged on one side of the mounting plate 3631, and a U-shaped limiting groove 3634 extending inward from the side of the limiting plate 3633 facing the axle housing body 71; wherein, a positioning pin hole 771 for embedding the elastic positioning pin 3632 is formed in the middle of the leaf spring seat 77; based on the above welding method, the positioning disc 362 rotates so that the first positioning tooling 363 corresponding to the leaf spring seat 77 moves to a position opposite to the welding position of the leaf spring seat 77. At this time, the end of the axle housing body 71 is embedded in the U-shaped limiting groove 3634, and then the leaf spring seat 77 is moved inward from the side of the mounting plate 3631 opposite to the limiting plate 3633, so that the elastic positioning pin 3632 is embedded in the positioning pin hole 771. At this time, the leaf spring seat 77 just fits in the welding position defined by it under the action of the mounting plate 3631 and the limiting plate 3633, and then spot welding can be performed on the leaf spring seat 77 by manual or welding manipulator.

[0050] Axle head welding device 4 presses the axle heads 76 at both ends of the axle housing body 71 that has been fully welded with large accessories 74 and fully welds the pressed axle heads 76. It includes a pressing device 41 for pressing the axle heads 76 and an axle head full welding device 42 for fully welding the axle heads 76. Among them, the pressing device 41 includes a pressing table 411, a fixed pressing seat 412 arranged on the pressing table 411, a movable pressing seat 413 that can be movably arranged on the pressing table 411 and move back and forth relative to the fixed pressing seat 412, a support table 414 arranged on the pressing table 411 between the fixed pressing seat 412 and the movable pressing seat 413, a first positioning sleeve 415 arranged on one side of the support table 414 that can abut against the movable pressing seat 413, a second positioning sleeve 416 arranged on the other side of the support table 414 that can abut against the fixed pressing seat 412, a first ejector rod 417 arranged on the movable pressing seat 413 that can abut against the first positioning sleeve 415, a reset member 418 arranged on the fixed pressing seat 412 that can abut against the second positioning sleeve 416 and drive the support table 414 to move back and reset, and a driving mechanism 419 arranged on the pressing table 411 to connect and drive the movable pressing seat 413 to move; specifically, the axle head full welding device 42 is a common welding device in the field of manufacturing the axle housing body 71, and its specific structure and working principle will not be further elaborated here; further, the reset member 418 can be a cylinder, and its piston rod is controlled to move outwards to abut against the second positioning sleeve 416 and then drive it to move back and reset, which is convenient for the manipulator to transfer the axle housing body 71 with the pressed axle heads 76 to the axle head full welding device 42 to fully weld the pressed axle heads 76.

[0051] The fixed pressing seat 412 includes a fixed pressing seat body 4121, a fixed pressing block 4122 arranged on the fixed pressing seat body 4121, and a first pressing groove 4123 arranged on the fixed pressing block 4122 for installing the axle head 76.

[0052] The movable pressing seat 413 includes a movable pressing seat body 4131, a movable pressing block 4132 arranged on the movable pressing seat body 4131, and a second pressing groove 4133 arranged on the movable pressing block 4132 for installing the axle head 76.

[0053] The support table 414 includes a support table body 4141 that can be movably arranged on the pressing table 411, a support plate 4142 that can be moved up and down on the support table body 4141, and a lifting cylinder 4143 arranged on the support table body 4141 to connect and drive the support plate 4142 to move up and down.

[0054] The first positioning sleeve 415, which has the same structure as the second positioning sleeve 416, includes a fixed sleeve fixedly connected to the support table 414, a movable sleeve movably arranged on the fixed sleeve, and a fixing pin arranged between the movable sleeve and the fixed sleeve for fixing the movable sleeve; by defining the structures of the first positioning sleeve 415 and the second positioning sleeve 416, the lengths of the first positioning sleeve 415 and the second positioning sleeve 416 can be adjusted according to the size of the axle housing body 71 when the axle head 76 is press-fitted.

[0055] The first ejector rod 417 includes a first ejector rod body 4171 movably arranged in the movable press-fitting seat 413 and a compression spring 4172 sleeved on the first ejector rod body 4171. Wherein, one end of the compression spring 4172 is connected to the first ejector rod body 4171, and the other end is connected to the movable press-fitting seat 413 The driving mechanism 419 includes a driving seat 4191 arranged on the press-fitting table 411, a driving oil cylinder 4192 arranged on the driving seat 4191, and a connecting head 4193 arranged at the front end of the driving oil cylinder 4192 and connected to the movable press-fitting seat 413.

[0056] The specific steps of press-fitting the axle head 76 are as follows: Step 1, the axle housing body 71 that has completed the full welding of the large accessories 74 is transferred to the support table 414 by a manipulator, and then the two axle heads 76 are respectively placed in the first press-fitting groove 4123 and the second press-fitting groove 4133. The driving mechanism 419 controls the movable press-fitting seat 413 to move along the direction close to the fixed press-fitting block 4122, so that the axle head 76 in the second press-fitting groove 4133 is first pressed into one end of the axle housing body 71. At this time, the first ejector rod 417 contacts the end of the first positioning sleeve 415; Step 2, the driving mechanism 419 controls the movable press-fitting seat 413 to continue moving closer to the fixed press-fitting seat 412, and the support table 414 moves closer to the fixed press-fitting seat 412 under the action of the first ejector rod 417, so that the axle head 76 in the first press-fitting groove 4123 is pressed into the other end of the axle housing body 71. At this time, the end of the second positioning sleeve 416 abuts against the fixed clamping seat 412; Step 3, the lifting cylinder 4143 controls the support plate 4142 to move downward to separate from the axle housing body 71. The axle housing body 71 is just supported between the movable press-fitting seat 413 and the fixed press-fitting seat 412. The driving mechanism 419 continues to control the movable press-fitting seat 413 to move closer to the fixed press-fitting seat 412, so that the axle heads 76 at both ends of the axle housing body 71 are further embedded into both ends of the axle housing body 71. At this time, the first ejector rod body 4171 moves in the direction of the movable press-fitting seat 413 under the action of the compression spring 4172 and the first positioning sleeve 415; Step 4: The lifting cylinder 4143 controls the support plate 4142 to move upward to support the bottom of the axle housing body 71. The driving mechanism 419 controls the moving pressing seat 413 to move in the reverse direction to release the contact between the moving pressing seat 413 and the axle housing body 71. The resetting member 418 abuts against the end of the second positioning sleeve 416 to drive the support table 414 to move in the reverse direction and reset, so that the axle housing body 71 of the pressed shaft head 76 moves and resets to the clamping position, facilitating the subsequent clamping and transfer by the manipulator.

[0057] The airtightness detection device 5 performs airtightness detection on the axle housing body 71 after the full welding of the shaft head 76. Among them, the airtightness detection device 5 is a commonly used device in the field of axle housing preparation, and its structure and working principle will not be further described here.

[0058] The small accessory welding device 6 sequentially performs spot welding and full welding of the small accessories 75 on the axle housing body 71 after welding the shaft head 76 to obtain the axle housing 7. Among them, the small accessory welding device 6 has the same structure as the large accessory welding device 3, and will not be further described here.

[0059] In this application, by defining the structural composition of the production and processing equipment, the axle housing body welding device 1, the reinforcing ring and back cover welding device 2, the large accessory welding device 3, the shaft head welding device 4, and the small accessory welding device 6 are set to achieve spot welding and full welding of the axle housing body 71, spot welding and full welding of the reinforcing ring 72 and the back cover 73, spot welding and full welding of the large accessories 74, pressing and full welding of the shaft head 76, and spot welding and full welding of the small accessories 75. The entire equipment has a high degree of automation, reduces the working intensity of the operators, and adopts the cooperation method of spot welding and full welding to ensure the welding accuracy of each component of the axle housing 7. At the same time, this equipment can be applied to the preparation of axle housings 7 of different sizes and models, greatly broadening the application scope of the equipment.

[0060] The above is only a preferred embodiment of the present invention, and thus cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the present invention application and the content of the specification should still fall within the scope covered by the present invention application.

Claims

1. A bridge housing production and processing device, the bridge housing comprising a bridge housing body, reinforcing rings and back covers oppositely arranged on opposite sides of the bridge housing body, axle heads arranged at both ends of the bridge housing body, and large and small accessories arranged on the outer surface of the bridge housing body. The bridge housing body comprises two spliced shells spliced up and down and four triangular plates respectively arranged on both sides of the spliced shells, characterized in that: It includes a bridge housing body welding device, a reinforcing ring and back cover welding device, a large accessory welding device, a spindle head welding device and a small accessory welding device; The bridge housing body welding device welds two spliced housings and four triangular plates to form a bridge housing body, and includes a splicing spot welding tooling for spot welding two spliced housings and four triangular plates into shape, a full welding tooling for full welding the spot-welded bridge housing body into shape, and a transfer mechanism for transferring the bridge housing body from the splicing spot welding tooling to the full welding tooling; The reinforcing ring and back cover welding device sequentially performs spot welding and full welding of the reinforcing ring and back cover on the bridge housing body formed by full welding; The large accessory welding device sequentially performs large accessory spot welding and full welding on the bridge housing body after welding the reinforcing ring and back cover, and includes a large accessory spot welding device for spot welding large accessories on the bridge housing body; The spindle head welding device presses the spindle heads at both ends of the bridge housing body after completing the full welding of large accessories and performs full welding on the pressed spindle heads; The small accessory welding device sequentially performs spot welding and full welding of small accessories on the bridge housing body after welding the spindle heads; 2. The production and processing equipment for a bridge housing according to claim 1, characterized in that: The large accessory spot welding device includes a welding table, a fixing mechanism arranged on the welding table for fixing the bridge housing body, a support frame arranged on the welding table, a positioning mechanism movably arranged on the support seat above the fixing mechanism for fixing large accessories, a moving seat arranged on the support frame, a lifting column movably arranged up and down in the moving seat for installing the positioning mechanism, a lateral moving mechanism arranged on the support frame for connecting and driving the lateral movement of the moving seat, and a lifting and moving mechanism arranged on the moving seat for connecting and driving the up and down movement of the lifting column; 3. A bridge housing production and processing device according to claim 2, characterized in that: The positioning mechanism includes a mounting seat connected to the lifting and moving mechanism, a positioning disk rotatably arranged on the mounting seat, a plurality of positioning toolings circumferentially distributed on the positioning disk, and a rotating component arranged on the mounting seat for connecting and driving the rotation of the positioning disk. The plurality of positioning toolings correspond to the plurality of large accessories one by one, and the positioning toolings position the relative large accessories at the welding position and perform spot welding with the bridge housing body; 4. A bridge housing production and processing device according to claim 1, characterized in that: The spliced housing includes a main body section and two mounting arms extending outward at both ends of the main body section. The splicing spot welding tooling includes a first base, a flipping frame rotatably arranged on the first base, a first clamping mechanism arranged on the flipping frame for clamping the main body sections of the two spliced housings, two second clamping mechanisms spaced on the flipping frame for clamping the two mounting arms of the two spliced housings respectively, and a flipping mechanism arranged on the first base for connecting and driving the flipping of the flipping frame. During the spot welding of the bridge housing body, the two spliced housings are spliced on the flipping frame through the first clamping mechanism and the two second clamping mechanisms, and then the triangular plates are placed on one side of the opposite two main body sections for spot welding. After the spot welding of the two triangular plates and the two spliced housings on one side of the bridge housing body is completed, the flipping mechanism drives the flipping frame to flip, and then the spot welding of the two triangular plates and the two spliced housings on the other side of the bridge housing body is performed.

5. The production and processing equipment for a bridge housing according to claim 4, characterized in that: The first clamping mechanism includes two first clamping frames arranged oppositely up and down on the flipping frame, first clamping components respectively arranged on the two first clamping frames for clamping the relatively spliced main body segments of the housing, and two first pressing components respectively arranged on the two first clamping frames for pressing the middle parts of the relatively spliced main body segments. The first clamping components include two first moving blocks movably arranged oppositely left and right on the first clamping frame, two first clamping wheels respectively arranged at the front ends of the two first moving blocks for clamping the relatively spliced main body segments, and two first moving parts respectively arranged on the first clamping frame for connecting and driving the relative first moving blocks to move. The first pressing components are arranged between the two first clamping wheels.

6. The production and processing equipment for a bridge housing according to claim 5, characterized in that: The first pressing component includes a first pressing head movably arranged up and down on the first clamping frame, a pressing block arranged at the front end of the first pressing head, and a first driving component arranged on the first clamping frame for connecting and driving the first pressing head to move. The pressing block and the two first clamping wheels are distributed in a triangular shape to clamp and fix the main body segment of the spliced housing.

7. A bridge housing production and processing device according to claim 1, characterized in that: Positioning holes are formed in the back cover. The back cover and reinforcing ring welding device includes a first welding device for spot-welding the back cover and the reinforcing ring to both sides of the axle housing body respectively, and a second welding device for full-welding the spot-welded back cover and reinforcing ring. The first welding device includes a spot-welding frame, a welding seat movably arranged up and down on the spot-welding frame, a positioning ring arranged on the welding seat, a positioning post extending upward from the positioning ring into the positioning hole, a positioning frame arranged on one side of the welding seat, a positioning plate arranged at the upper end of the positioning frame and capable of being turned downward to position the back cover, a lifting mechanism arranged on the spot-welding frame for connecting and driving the welding seat to move up and down, and two support brackets oppositely arranged on the spot-welding frame on both sides of the welding seat.

8. A bridge housing production and processing device according to claim 7, characterized in that: The back cover includes a main body part arranged in a semicircular shape, an extension part extending downward from the lower end of the main body part, and a connecting part extending radially outward from the lower end of the extension part to be connected with the axle housing body. An arc-shaped positioning groove extending inward is formed on the relative surface of the positioning plate and the back cover. When the back cover is spot-welded, the positioning plate can be turned downward until its lower end supports on the connecting part. At this time, the inner wall of the arc-shaped positioning groove is adapted to the outer peripheral surface of the extension part.

9. The production and processing equipment for a bridge housing according to claim 7, characterized in that: The second welding device includes a base, a first gripping mechanism arranged on the base for gripping and driving the axle housing to rotate, a second gripping mechanism arranged on the base opposite to the first gripping mechanism, a first welding device for full-welding the reinforcing ring on one side of the base, and a second welding device for full-welding the back cover on one side of the base. The axle housing is rotatably arranged between the first gripping mechanism and the second gripping mechanism, so that the first welding device and the second welding device can respectively and simultaneously perform full-welding on the reinforcing ring and the back cover.

10. A bridge housing production and processing device according to claim 1, characterized in that: The shaft head welding device includes a pressing device for pressing the shaft head. The pressing device includes a pressing table, a fixed pressing seat arranged on the pressing table, a movable pressing seat movably arranged on the pressing table and moving back and forth relative to the fixed pressing seat, a support table arranged on the pressing table between the fixed pressing seat and the movable pressing seat, a first positioning sleeve arranged on one side of the support table and capable of abutting against the movable pressing seat, a second positioning sleeve arranged on the other side of the support table and capable of abutting against the fixed pressing seat, a first ejector rod arranged on the movable pressing seat and capable of abutting against the first positioning sleeve, a reset member arranged on the fixed pressing seat and capable of abutting against the second positioning sleeve to drive the support table to move reversely and reset, and a driving mechanism arranged on the pressing table to connect and drive the movable pressing seat to move.

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