Transmission shaft welding device and use method thereof

Abstract

The present invention provides a transmission shaft welding device and a method for using the same, and belongs to the technical field of transmission shaft production auxiliary facilities. It comprises a workbench and a transmission shaft assembly. The present invention sets a flange fixing ring 1 to fix it with the left flange, and at the same time installs the transmission shaft tube and the spline shaft into the interior of a simulation device. After the welding machine is used to perform initial welding on the weld position of the spline shaft and the left universal joint assembly, the simulation device is used to simulate the state of the transmission shaft during the working process. After the initially welded spline shaft and the left universal joint assembly meet the inspection requirements, the welding assembly is used to perform complete welding. Similarly, a flange fixing ring 2 is set to fix it with the right flange, and after the welding machine is used to perform initial welding on the weld position of the right universal joint assembly and the transmission shaft tube, the simulation device is used to simulate the state of the transmission shaft during the working process. After meeting the inspection requirements, complete welding is performed to solve the problems of low yield and complicated working steps of existing welding devices.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary facilities for transmission shaft production, and in particular to a transmission shaft welding device and a method for using the same. Background Art

[0002] Generally, the drive shaft must undergo a dynamic balancing test and be adjusted on a balancing machine before leaving the factory.

[0003] During the production process of the drive shaft, it is necessary to weld two sets of universal joint assemblies to the spline shaft side and the drive shaft tube side respectively. At the same time, it is necessary to ensure that the concentricity and dynamic balance of each component on the produced drive shaft meet the use requirements. In order to improve welding efficiency, the existing welding device adopts a dual-welding machine synchronous welding method to synchronously weld the two sets of universal joint assemblies, and then performs dynamic inspection on the welded drive shaft. At this time, if the welded drive shaft does not meet the use requirements, the universal joint assembly needs to be removed and re-welded. Therefore, the yield rate of the drive shaft manufactured by this welding method is not high. At the same time, it is necessary to use an external measuring device to detect the dynamic balance and concentricity after welding, which makes the overall process steps of the drive shaft manufacturing complicated. Therefore, the present application provides a drive shaft welding device and a method for using it to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a drive shaft welding device and a method for using the same, wherein a flange fixing ring 1 is set to fix it to the left flange plate, and the drive shaft tube and the spline shaft are installed inside a simulation device, and the spline shaft and the left universal joint assembly are initially welded by a welding machine, and then the state of the drive shaft during operation is simulated by a simulation device, and after the initially welded spline shaft and the left universal joint assembly meet the inspection requirements, they are completely welded by welding, and similarly, a flange fixing ring 2 is set to fix it to the right flange plate, and the right universal joint assembly and the drive shaft tube are initially welded by a welding machine, and then the state of the drive shaft during operation is simulated by a simulation device, and after it meets the inspection requirements, it is completely welded, so as to solve the problems of low yield and complicated working steps of existing welding devices.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a drive shaft welding device, comprising a workbench and a drive shaft assembly, a positioning frame is fixedly installed on the left top of the workbench, and the front end surface of the top of the positioning frame is rotatably connected to a flange fixing ring through a bearing, a welding assembly is movably arranged on the workbench, and a simulation device is movably arranged on the right top of the workbench; the drive shaft assembly includes a drive shaft tube, a spline shaft is cooperatively installed on the left end tube wall of the drive shaft tube, a left universal joint assembly and a left flange are arranged on the left side of the spline shaft, and a right universal joint assembly and a right flange are arranged on the right end tube wall of the drive shaft tube; the left flange is fixedly connected to a flange fixing ring by bolts, and the left universal joint assembly is fixedly connected to the left flange end wall, and the welding assembly can weld the weld position of the left universal joint assembly and the spline shaft, and the right flange and the drive shaft tube can both be used in conjunction with the simulation device.

[0006] Optionally, the simulation device includes a slide seat 2, slide rails 2 are fixedly installed on both sides of the top of the workbench, a screw rod 2 is rotatably connected to the top of the workbench, a motor 4 is fixedly installed on the top of the workbench, and the output end of the motor 4 is fixedly connected to the end wall of the screw rod 2, an internal threaded seat is fixedly installed on the bottom of the slide seat 2, the slide seat 2 is slidably connected to the slide rail 2, and the internal threaded seat is engaged with the screw rod 2, slide rails 3 are fixedly installed on both sides of the top of the slide seat 2, the middle part of the slide seat 2 is rotatably connected to the screw rod 3, a motor 5 is fixedly installed on the top of the slide seat 2, and the output end of the motor 5 is fixedly connected to the end wall of the screw rod 3.

[0007] Optionally, a fixing seat 1 and a fixing seat 2 are fixedly installed at both ends of the slide rail 3, a threaded slide 3 is engaged on the screw rod 3, and the threaded slide 3 is slidingly connected to the slide rail 3, the threaded slide 3 is located between the fixing seat 1 and the fixing seat 2, and an insertion rod is fixedly installed on the top of the fixing seat 2, and the insertion rod slides through the top side wall of the threaded slide 3.

[0008] Optionally, the simulation device also includes a base, and both side walls of the base are fixedly installed with slide rails four, and both sides of the fixing seat one and the threaded slide seat three are provided with cross plates, the two ends of the bottom of the cross plate are respectively rotatably connected to the side walls of the fixing seat one and the threaded slide seat three, the top left end of the cross plate is rotatably connected to the end wall of the base, and the top right end of the cross plate is movably connected to the corresponding slide rail four.

[0009] Optionally, a vertical platform is fixedly installed on the top of the base, and a flange fixing ring 2 is rotatably connected to the middle part of the vertical platform through a bearing. The right flange is fixedly connected to the flange fixing ring 2 through bolts, and the right universal joint assembly is fixedly connected to the right flange end wall. The welding assembly can weld the right universal joint assembly and the drive shaft tube.

[0010] Optionally, a second cylinder is fixedly mounted on the top end of the base, and both ends of the base are slidably connected to the same sliding platform, and the sliding platform is located between the vertical platform and the second cylinder. The side wall of the sliding platform is rotatably connected to a pin through a bearing, and the pin has a taper setting. The pin is plugged into the inner wall of the right end of the transmission shaft tube, and the output shaft of the second cylinder is fixedly connected to the end wall of the sliding platform.

[0011] Optionally, the welding assembly includes a slide seat 1, a slide rail 1 is fixedly installed on the top of the workbench, and the slide seat 1 is slidably connected to the slide rail 1, a cylinder 3 is fixedly installed on the top of the workbench, and the output shaft of cylinder 3 is fixedly connected to the end wall of the slide seat 1, the top side wall of the slide seat 1 is fixedly installed with an outer shell, limit rods are fixedly installed on both sides of the inner wall of the outer shell, a screw rod 1 is fixedly installed on the middle inner wall of the outer shell, and the top of the screw rod 1 and the top of the limit rod on the right are fixedly installed with the same joint seat.

[0012] Optionally, the inner wall of the outer shell is slidably connected to a displacement seat, and the displacement seat is slidably connected to the limit rod, the screw rod 1 passes through the displacement seat, the top inner wall of the displacement seat is rotatably connected to an internally threaded sleeve 1, and the internally threaded sleeve 1 is engaged with the screw rod 1, the outer wall of the internally threaded sleeve 1 is fixedly installed with a gear 1, the top of the displacement seat is rotatably connected to a gear 2, and the gear 2 is engaged with the gear 1, the bottom of the displacement seat is fixedly installed with a motor 3, and the output shaft of the motor 3 is fixedly connected to the gear 2, the outer wall of the displacement seat is fixedly installed with an L-shaped plate, the top of the L-shaped plate is fixedly installed with a cylinder 1, and the output shaft of the cylinder 1 is fixedly installed with a welding machine.

[0013] Optionally, a control panel is fixedly mounted on the top of the workbench, a motor 1 is fixedly mounted on the side wall of the positioning frame, and an output shaft of the motor 1 is fixedly connected to an inner wall of a flange fixing ring 1.

[0014] This application also provides another technical solution: a method for using a transmission shaft welding device, which includes the following specific operating steps:

[0015] S1: When welding the weld between the left universal joint assembly and the spline shaft at the left end of the drive shaft tube, insert the latch into the spline shaft and drive shaft tube assembly. Then, drive cylinder 2 to push the sliding platform and latch to fix the drive shaft tube and the latch together. At the same time, use bolts to install the left flange and the left universal joint assembly onto flange fixing ring 1.

[0016] S2: Motor 5 is driven to cause threaded slide 3 to slide on slide 2, thereby changing the height of the base through the action of the cross plate, so that the horizontal height of the drive shaft tube connected to the pin on the base is the same as the height of the left universal joint assembly. Thereafter, after the weld seam of the left universal joint assembly and the spline shaft are aligned, a welding assembly is used to perform four-point welding on the weld seam at the mating point of the left universal joint assembly and the spline shaft;

[0017] S3: After four-point welding of the left universal joint assembly and the spline shaft, drive motor 1 to rotate the flange fixing ring 1 and the left universal joint assembly, thereby rotating the spline shaft and the drive shaft tube. At the same time, drive motor 5 changes the horizontal height of the drive shaft tube, and drive motor 4 causes the spline shaft and the drive shaft tube to slide relative to each other, thereby simulating the state of the drive shaft during operation. At this time, an external detection device is used to detect the concentricity and balance of the left universal joint assembly and the spline shaft during movement. When the left universal joint assembly and the spline shaft meet the concentricity and balance requirements, the welding assembly is used to completely weld the weld position of the left universal joint assembly and the spline shaft;

[0018] S4: After the left universal joint assembly and the spline shaft are completely welded, the latch is separated from the drive shaft tube by driving motor 4 and cylinder 2. At the same time, the right flange and the right universal joint assembly are installed on flange fixing ring 2 using bolts. After the right universal joint assembly and the drive shaft tube are mated, four-point welding is performed on the mating points of the right universal joint assembly and the drive shaft tube using a welding assembly.

[0019] S5: After four-point welding of the right universal joint assembly and the drive shaft tube, drive motors 1, 5, and 4 to simulate the state of the drive shaft during operation. Simultaneously, use an external detection device to detect the concentricity and balance of the right universal joint assembly and the drive shaft tube during movement. When the right universal joint assembly and the drive shaft tube meet the concentricity and balance requirements, use a welding assembly to completely weld the right universal joint assembly and the drive shaft tube.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] In the above scheme, a flange fixing ring 1 is set to fix it to the left flange plate, and the drive shaft tube and the spline shaft are installed inside the simulation device. After the spline shaft and the left universal joint assembly are welded at four points by a welding machine, the flange fixing ring 1 and the left universal joint assembly are driven by the driving motor 1 to rotate, thereby driving the spline shaft and the drive shaft tube to rotate. At the same time, the driving motor 5 changes the horizontal height of the drive shaft tube, and the driving motor 4 causes the spline shaft and the drive shaft tube to slide relative to each other, thereby simulating the state of the drive shaft during operation. The concentricity and balance of the left universal joint assembly and the spline shaft during movement are detected by an external detection device. When the left universal joint assembly and the spline shaft meet the concentricity and balance requirements, the welding assembly is used to completely weld the weld position of the left universal joint assembly and the spline shaft, thereby completing the welding of the universal joint assembly and the spline shaft.

[0022] After the left universal joint assembly and the spline shaft are completely welded, the pin is separated from the drive shaft tube by driving motor four and cylinder two. At the same time, the right flange and the right universal joint assembly are installed on the flange fixing ring two with bolts. After that, the right universal joint assembly is matched with the drive shaft tube, and the welding assembly is used to perform four-point welding on the matching points of the right universal joint assembly and the drive shaft tube. By driving motor one, motor five and motor four, the state of the drive shaft during operation is simulated. At the same time, the concentricity and balance of the right universal joint assembly and the drive shaft tube during movement are detected by an external detection device. When the right universal joint assembly and the drive shaft tube meet the concentricity and balance requirements, the welding assembly is used to completely weld the right universal joint assembly and the drive shaft tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a transmission shaft welding device;

[0025] Figure 2 This is a schematic diagram of the welding machine welding the left universal joint assembly and the spline shaft;

[0026] Figure 3 This is a schematic diagram of the assembly of the drive shaft tube and the latch;

[0027] Figure 4 This is a schematic diagram of the welding machine welding the right universal joint assembly and the drive shaft tube;

[0028] Figure 5 A schematic diagram of the motion state of the transmission shaft assembly simulated for the device;

[0029] Figure 6 This is a schematic diagram of the assembly of the right universal joint assembly and the drive shaft tube;

[0030] Figure 7 This is a schematic diagram of the installation of welding components;

[0031] Figure 8 This is a schematic diagram of the assembly of the left flange and the flange fixing ring 1;

[0032] Figure 9 is a structural diagram of a welding assembly;

[0033] Figure 10 This is a disassembled diagram of the welded assembly;

[0034] Figure 11 Schematic diagram of the internal structure of the outer shell;

[0035] Figure 12 FIG1 is a diagram showing the meshing state of screw 1 and internal threaded sleeve 1;

[0036] Figure 13 This is the installation location diagram of the simulation device;

[0037] Figure 14 It is a structural diagram of the simulation device;

[0038] Figure 15 It is the working state diagram of the simulation device;

[0039] Figure 16 This is a disassembled diagram of the simulation device;

[0040] Figure 17 This is a left-side exploded view of the components on the base;

[0041] Figure 18 This is an exploded view of the components on the base from the right side.

[0042] Reference numerals:

[0043] 100. Workbench; 110. Control panel; 120. Positioning bracket; 121. Motor 1; 122. Flange fixing ring 1; 130. Welding assembly; 131. Slide rail 1; 132. Cylinder 3; 133. Slide seat 1; 134. Outer shell; 135. Limit rod; 136. Screw rod 1; 137. Joint seat; 140. Displacement seat; 141. Internal threaded sleeve 1; 142. Gear 1; 143. Gear 2; 144. Motor 3; 145. L-shaped plate; 146. Cylinder 1; 147. Welding machine; 150. Slide rail 2; 151. Screw rod 2; 152. Motor 4; 200. Simulation device; 2 10. Slide seat 2; 211. Internal thread seat; 212. Slide rail 3; 213. Screw rod 3; 214. Motor 5; 220. Fixing seat 1; 221. Fixing seat 2; 222. Threaded slide seat 3; 223. Insert rod; 224. Cross plate; 230. Base; 231. Slide rail 4; 232. Vertical platform; 233. Flange fixing ring 2; 234. Slide platform; 235. Latch; 236. Cylinder 2; 300. Drive shaft assembly; 310. Drive shaft tube; 320. Spline shaft; 330. Left universal joint assembly; 340. Left flange; 350. Right universal joint assembly; 360. Right flange.

[0044] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0045] The following describes in detail a drive shaft welding device and its method of use provided by the present invention, in conjunction with the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative methods for implementing certain known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0046] like Figures 1 to 18 As shown, an embodiment of the present invention provides a transmission shaft welding device, including a workbench 100 and a transmission shaft assembly 300. A positioning frame 120 is fixedly installed on the left top of the workbench 100. The front end surface of the top of the positioning frame 120 is rotatably connected to a flange fixing ring 122 through a bearing. The flange fixing ring 122 can be connected to the left flange 340, thereby driving the transmission shaft assembly 300 to rotate. A welding assembly 130 is movably provided on the workbench 100, and a simulation device 200 is movably provided on the right top of the workbench 100.

[0047] The drive shaft assembly 300 includes a drive shaft tube 310. A spline shaft 320 is mounted on the left end of the drive shaft tube 310. The drive shaft tube 310 and the spline shaft 320 are pre-assembled and assembled before welding. A left universal joint assembly 330 and a left flange 340 are mounted on the left side of the spline shaft 320. A right universal joint assembly 350 and a right flange 360 ​​are mounted on the right end of the drive shaft tube 310.

[0048] The left flange 340 is fixedly connected to the flange fixing ring 122 by bolts, the left universal joint assembly 330 is fixedly connected to the end wall of the left flange 340, the welding assembly 130 can weld the weld position of the left universal joint assembly 330 and the spline shaft 320, and the right flange 360 ​​and the drive shaft tube 310 can be used in conjunction with the simulation device 200. In the present invention, when welding the weld position of the left universal joint assembly 330 and the spline shaft 320 at the left end of the drive shaft tube 310, the pin 235 is inserted into the assembly of the spline shaft 320 and the drive shaft tube 310, and then the cylinder 2 236 is driven to push the sliding table 234 and the pin 235, so that the drive shaft tube 310 and the pin 235 are fixed together. At the same time, use bolts to install the left flange 340 and the left universal joint assembly 330 on the flange fixing ring 122, and drive the motor 5 214 to drive the threaded slide 3 222 to slide on the slide 2 210, so that the height of the base 230 is changed by the action of the cross plate 224, so that the horizontal height of the drive shaft tube 310 plugged with the pin 235 on the base 230 is the same as the height of the left universal joint assembly 330. Thereafter, after matching the weld position of the left universal joint assembly 330 with the spline shaft 320, use the welding assembly 130 to perform four-point welding on the weld position of the left universal joint assembly 330 and the spline shaft 320, thereby pre-welding the left end of the drive shaft tube 310.

[0049] As an implementation method in this embodiment, Figure 13 and Figure 14 As shown, the simulation device 200 includes a second slide 210, two slide rails 150 are fixedly installed on both sides of the top of the workbench 100, a second screw 151 is rotatably connected to the top of the workbench 100, a fourth motor 152 is fixedly installed on the top of the workbench 100, and the output end of the fourth motor 152 is fixedly connected to the end wall of the second screw 151, an internal thread seat 211 is fixedly installed on the bottom of the second slide 210, the second slide 210 is slidably connected to the second slide rail 150, and the internal thread seat 211 is engaged with the second screw 151, a third slide rail 212 is fixedly installed on both sides of the top of the second slide 210, a third screw 213 is rotatably connected to the middle of the second slide 210, and the second slide 210 A motor five 214 is fixedly installed on the top, and the output end of the motor five 214 is fixedly connected to the end wall of the screw three 213. In the present invention, if it is necessary to simulate the relative displacement of the transmission shaft tube 310 and the spline shaft 320, or to separate the pin 235 from the transmission shaft tube 310, the motor four 152 is driven to drive the screw two 151 to engage with the internal thread seat 211, so that the slide two 210 slides on the slide rail two 150, thereby driving the pin 235 on the slide two 210 to move, so that the pin 235 pulls the transmission shaft tube 310 outward, and finally separates the transmission shaft tube 310 from the pin 235.

[0050] The two ends of the slide rail three 212 are respectively fixedly installed with a fixing seat one 220 and a fixing seat two 221, a threaded slide three 222 is engaged with the screw rod three 213, and the threaded slide three 222 is slidingly connected to the slide rail three 212, the threaded slide three 222 is located between the fixing seat one 220 and the fixing seat two 221, and an insertion rod 223 is fixedly installed on the top of the fixing seat two 221, and the insertion rod 223 slides through the top side wall of the threaded slide three 222, and the motor five 214 is driven to drive the screw rod three 213 to engage with the threaded slide three 222, so that the threaded slide three 222 slides on the slide rail three 212.

[0051] In this embodiment, if Figures 15 to 18 As shown, the simulation device 200 also includes a base 230, and both side walls of the base 230 are fixedly installed with slide rails 4 231, and both sides of the fixing seat 1 220 and the threaded slide seat 3 222 are provided with cross plates 224, and the two ends of the bottom of the cross plate 224 are respectively rotatably connected to the side walls of the fixing seat 1 220 and the threaded slide seat 3 222, and the top left end of the cross plate 224 is rotatably connected to the end wall of the base 230, and the top right end of the cross plate 224 is movably connected to the corresponding slide rail 4 231. In the present invention, when the driving motor 5 214 makes the threaded slide seat 3 222 slide on the slide rail 3 212, it can drive the cross plate 224 to move, thereby changing the horizontal height of the base 230.

[0052] A vertical platform 232 is fixedly installed on the top of the base 230, and a flange fixing ring 233 is rotatably connected to the middle of the vertical platform 232 through a bearing. The right flange 360 ​​is fixedly connected to the flange fixing ring 233 by bolts, and the right universal joint assembly 350 is fixedly connected to the end wall of the right flange 360. The welding assembly 130 can weld the right universal joint assembly 350 and the transmission shaft tube 310. In the present invention, after the weld position of the left universal joint assembly 330 and the spline shaft 320 is completely welded, the motor 4 152 and the cylinder 2 236 are driven to separate the pin 235 from the transmission shaft tube 310. At the same time, the right flange 360 ​​and the right universal joint assembly 350 are installed to On the flange fixing ring 233, after that, the right universal joint assembly 350 is matched with the drive shaft tube 310, the welding assembly 130 is used to perform four-point welding on the matching parts of the right universal joint assembly 350 and the drive shaft tube 310, and then the motor 1 121, the motor 5 214 and the motor 4 152 are driven to simulate the state of the drive shaft during operation. At the same time, the external detection device is used to detect the concentricity and balance of the right universal joint assembly 350 and the drive shaft tube 310 during the movement. When the right universal joint assembly 350 and the drive shaft tube 310 meet the concentricity and balance requirements, the welding assembly 130 is used to completely weld the right universal joint assembly 350 and the drive shaft tube 310.

[0053] The top end of the base 230 is fixedly installed with a cylinder 236, and the two ends of the base 230 are slidably connected to the same sliding platform 234, and the sliding platform 234 is located between the vertical platform 232 and the cylinder 236. The side wall of the sliding platform 234 is rotatably connected with a pin 235 through a bearing. The pin 235 has a taper setting and can be driven by the cylinder 236 to push the sliding platform 234 outward, so that the pin 235 is inserted into the transmission shaft tube 310. At the same time, the greater the displacement pushed by the cylinder 236, the tighter the fit between the pin 235 and the transmission shaft tube 310. The pin 235 is plugged into the inner wall of the right end of the transmission shaft tube 310, and the output shaft of the cylinder 236 is fixedly connected to the end wall of the sliding platform 234. In the present invention, the weld position of the left universal joint assembly 330 and the spline shaft 320 is adjusted. After four-point welding is performed, the driving motor 121 drives the flange fixing ring 122 and the left universal joint assembly 330 to rotate, thereby driving the spline shaft 320 and the drive shaft tube 310 to rotate. At the same time, the driving motor 5 214 changes the horizontal height of the drive shaft tube 310, and the driving motor 4 152 causes the spline shaft 320 and the drive shaft tube 310 to slide relative to each other, thereby simulating the state of the drive shaft during operation. At this time, an external detection device is used to detect the concentricity and balance of the left universal joint assembly 330 and the spline shaft 320 during the movement. When the left universal joint assembly 330 and the spline shaft 320 meet the concentricity and balance requirements, the welding assembly 130 is used to completely weld the weld position of the left universal joint assembly 330 and the spline shaft 320.

[0054] As an implementation method in this embodiment, Figure 7 and Figures 9 to 11 As shown, the welding assembly 130 includes a slide 133, a slide rail 131 is fixedly installed on the top of the workbench 100, and the slide 133 is slidably connected to the slide rail 131, a cylinder 3 132 is fixedly installed on the top of the workbench 100, and the output shaft of the cylinder 3 132 is fixedly connected to the end wall of the slide 133, an outer shell 134 is fixedly installed on the top side wall of the slide 133, and limiting rods 135 are fixedly installed on both sides of the inner wall of the outer shell 134, a screw 136 is fixedly installed on the middle inner wall of the outer shell 134, and the top of the screw 136 and the top of the limiting rod 135 on the right are fixedly installed with the same coupling seat 137, and by driving the cylinder 3 132, it drives the slide 133 to slide on the slide rail 131, thereby driving the outer shell 134 to move.

[0055] In this embodiment, if Figures 10 to 12As shown, the inner wall of the outer shell 134 is slidably connected to the displacement seat 140, and the displacement seat 140 is slidably connected to the limit rod 135, the screw 136 passes through the displacement seat 140, the inner wall of the top of the displacement seat 140 is rotatably connected to the internal threaded sleeve 141, and the internal threaded sleeve 141 is meshed with the screw 136, the outer wall of the internal threaded sleeve 141 is fixedly installed with a gear 142, the top of the displacement seat 140 is rotatably connected to the gear 2 143, and the gear 2 143 is meshed with the gear 142, the bottom of the displacement seat 140 is fixedly installed with a motor 3 144, and the output shaft of the motor 3 144 is fixedly connected to the gear 2 143, the outer wall of the displacement seat 140 An L-shaped plate 145 is fixedly installed on the wall, a cylinder 146 is fixedly installed on the top of the L-shaped plate 145, and a welding machine 147 is fixedly installed on the output shaft of the cylinder 146. In the present invention, by driving the motor 3 144, it drives the gear 2 143 to engage with the gear 1 142, thereby driving the internal threaded sleeve 141 to engage with the screw 136, so that the internal threaded sleeve 141 is displaced on the screw 136, thereby driving the displacement seat 140 to slide, and at the same time, in conjunction with the cylinder 146 and the cylinder 3 132, the welding machine 147 can be moved on the three coordinate axes of X, Y, and Z, thereby facilitating the welding of various components on the transmission shaft.

[0056] As an implementation method in this embodiment, Figure 1 and Figure 8 As shown, a control panel 110 is fixedly installed on the top of the workbench 100, and the control panel 110 is electrically connected to the driving component in the device, so as to facilitate the control of the welding of the drive shaft assembly 300. A motor 121 is fixedly installed on the side wall of the positioning frame 120, and the output shaft of the motor 121 is fixedly connected to the inner wall of the flange fixing ring 122. By driving the motor 121, the flange fixing ring 122 and the left universal joint assembly 330 are driven to rotate, and then the spline shaft 320 and the drive shaft tube 310 are driven to rotate, which can facilitate the welding machine 147 to perform rotation welding.

[0057] The working steps of the technical solution provided by the present invention are as follows:

[0058] S1: When welding the weld between the left universal joint assembly 330 and the spline shaft 320 at the left end of the drive shaft tube 310, insert the latch 235 into the assembly of the spline shaft 320 and the drive shaft tube 310. Then, drive the second cylinder 236 to push the sliding platform 234 and the latch 235, so that the drive shaft tube 310 and the latch 235 are fixed together. At the same time, the left flange 340 and the left universal joint assembly 330 are installed on the flange fixing ring 122 using bolts.

[0059] S2: The motor 5 214 is driven to cause the threaded slide 3 222 to slide on the slide 2 210 , thereby changing the height of the base 230 through the action of the cross plate 224 , so that the horizontal height of the drive shaft tube 310 connected to the latch 235 on the base 230 is the same as the height of the left universal joint assembly 330 . Thereafter, after the weld seam positions of the left universal joint assembly 330 and the spline shaft 320 are aligned, the welding assembly 130 is used to perform four-point welding on the weld seam positions of the left universal joint assembly 330 and the spline shaft 320 .

[0060] S3: After four-point welding of the weld position of the left universal joint assembly 330 and the spline shaft 320, the driving motor 1 121 drives the flange fixing ring 1 122 and the left universal joint assembly 330 to rotate, thereby driving the spline shaft 320 and the drive shaft tube 310 to rotate. At the same time, the driving motor 5 214 changes the horizontal height of the drive shaft tube 310, and the driving motor 4 152 causes the spline shaft 320 and the drive shaft tube 310 to slide relative to each other, thereby simulating the state of the drive shaft during operation. At this time, the concentricity and balance of the left universal joint assembly 330 and the spline shaft 320 during the movement are detected by an external detection device. When the left universal joint assembly 330 and the spline shaft 320 meet the concentricity and balance requirements, the welding assembly 130 is used to completely weld the weld position of the left universal joint assembly 330 and the spline shaft 320;

[0061] S4: After the weld seam between the left universal joint assembly 330 and the spline shaft 320 is completely welded, the fourth motor 152 and the second cylinder 236 are driven to separate the latch pin 235 from the drive shaft tube 310. Simultaneously, the right flange 360 ​​and the right universal joint assembly 350 are bolted to the second flange fixing ring 233. Four-point welding is then performed on the weld seam between the right universal joint assembly 350 and the drive shaft tube 310 using the welding assembly 130.

[0062] S5: After four-point welding of the right universal joint assembly 350 and the drive shaft tube 310, drive motor 1 121, motor 5 214 and motor 4 152 to simulate the state of the drive shaft during operation. At the same time, use an external detection device to detect the concentricity and balance of the right universal joint assembly 350 and the drive shaft tube 310 during movement. When the right universal joint assembly 350 and the drive shaft tube 310 meet the concentricity and balance requirements, use the welding assembly 130 to completely weld the right universal joint assembly 350 and the drive shaft tube 310.

[0063] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A transmission shaft welding device, comprising a workbench and a transmission shaft assembly, characterized in that: A positioning frame is fixedly installed on the top of the left side of the workbench, and the front end surface of the top of the positioning frame is rotatably connected to a flange fixing ring through a bearing. A welding assembly is movably provided on the workbench, and a simulation device is movably provided on the top of the right side of the workbench; The transmission shaft assembly includes a transmission shaft tube, a spline shaft is mounted on the left end of the transmission shaft tube, a left universal joint and a left flange are provided on the left side of the spline shaft, and a right universal joint and a right flange are provided on the right end of the transmission shaft tube. The left flange is fixedly connected to the flange fixing ring 1 by bolts, the left universal joint is fixedly connected to the end wall of the left flange, the welding assembly can weld the weld position of the left universal joint and the spline shaft, and the right flange and the transmission shaft tube can be used in conjunction with the simulation device; The simulation device includes a slide seat 2, slide rails 2 are fixedly installed on both sides of the top of the workbench, a screw rod 2 is rotatably connected to the top of the workbench, a motor 4 is fixedly installed on the top of the workbench, and the output end of the motor 4 is fixedly connected to the second end wall of the screw rod, an internal thread seat is fixedly installed on the bottom of the slide seat 2, the slide seat 2 is slidably connected to the slide rail 2, and the internal thread seat is engaged with the screw rod 2, slide rails 3 are fixedly installed on both sides of the top of the slide seat 2, the middle part of the slide seat 2 is rotatably connected to the screw rod 3, a motor 5 is fixedly installed on the top of the slide seat 2, and the output end of the motor 5 is fixedly connected to the end wall of the screw rod 3; The two ends of the slide rail three are respectively fixedly installed with a fixing seat one and a fixing seat two, the screw rod three is meshed with a threaded slide seat three, and the threaded slide seat three is slidably connected to the slide rail three, the threaded slide seat three is located between the fixing seat one and the fixing seat two, and the top of the fixing seat two is fixedly installed with an insertion rod, and the insertion rod slides through the top side wall of the threaded slide seat three; The simulation device also includes a base, and both side walls of the base are fixedly installed with slide rails 4, and both sides of the fixing seat 1 and the threaded slide seat 3 are provided with cross plates, the two ends of the bottom of the cross plate are respectively rotatably connected to the side walls of the fixing seat 1 and the threaded slide seat 3, the left end of the top of the cross plate is rotatably connected to the end wall of the base, and the right end of the top of the cross plate is movably connected to the corresponding slide rail 4; The top of the base is fixedly mounted with a vertical platform, the middle of the vertical platform is rotatably connected to a flange fixing ring 2 via a bearing, the right flange is fixedly connected to the flange fixing ring 2 via bolts, the right universal joint is fixedly connected to the right flange end wall, and the welding assembly can be used to weld the right universal joint to the drive shaft tube; Cylinder 2 is fixedly installed at the top end of the base, and the two ends of the base are slidably connected to the same sliding platform, and the sliding platform is located between the vertical platform and cylinder 2. The side wall of the sliding platform is rotatably connected to a pin through a bearing, and the pin has a taper setting. The pin is plugged into the inner wall of the right end of the transmission shaft tube, and the output shaft of cylinder 2 is fixedly connected to the end wall of the sliding platform.

2. A transmission shaft welding device according to claim 1, characterized in that: The welding assembly includes a slide seat 1, a slide rail 1 is fixedly installed on the top of the workbench, and the slide seat 1 is slidably connected to the slide rail 1, a cylinder 3 is fixedly installed on the top of the workbench, and the output shaft of cylinder 3 is fixedly connected to the end wall of the slide seat 1, the top side wall of the slide seat 1 is fixedly installed with an outer shell, limit rods are fixedly installed on both sides of the inner wall of the outer shell, a screw rod 1 is fixedly installed on the inner wall of the middle part of the outer shell, and the top of the screw rod 1 and the top of the limit rod on the right are fixedly installed with the same joint seat.

3. A transmission shaft welding device according to claim 2, characterized in that: The inner wall of the outer shell is slidably connected to a displacement seat, and the displacement seat is slidably connected to the limit rod, the screw rod passes through the displacement seat, the top inner wall of the displacement seat is rotatably connected to an internally threaded sleeve rod, and the internally threaded sleeve rod is meshed with the screw rod, the outer wall of the internally threaded sleeve rod is fixedly mounted with a gear rod, the top of the displacement seat is rotatably connected to a gear rod, and the gear rod is meshed with the gear rod, the bottom of the displacement seat is fixedly mounted with a motor rod, and the output shaft of the motor rod is fixedly connected to the gear rod, an L-shaped plate is fixedly mounted on the outer wall of the displacement seat, the top of the L-shaped plate is fixedly mounted with a cylinder rod, and the output shaft of the cylinder rod is fixedly mounted with a welding machine.

4. A transmission shaft welding device according to claim 3, characterized in that: A control panel is fixedly installed on the top of the workbench, a motor 1 is fixedly installed on the side wall of the positioning frame, and an output shaft of the motor 1 is fixedly connected to an inner wall of a flange fixing ring 1.

5. The method for using the transmission shaft welding device according to claim 4, characterized in that: The specific steps are as follows: S1: When welding the weld between the left universal joint and the spline shaft at the left end of the drive shaft tube, insert the latch into the assembly of the spline shaft and the drive shaft tube. Then, drive cylinder 2 to push the sliding platform and the latch to fix the drive shaft tube and the latch together. At the same time, use bolts to install the left flange and the left universal joint onto flange fixing ring 1. S2: Driving motor five causes threaded slide three to slide on slide two, thereby changing the height of the base through the action of the cross plate, so that the horizontal height of the drive shaft tube on the base connected to the pin is the same as the height of the left universal joint. Thereafter, after aligning the weld seam between the left universal joint and the spline shaft, four-point welding is performed on the weld seam between the left universal joint and the spline shaft using a welding assembly; S3: After four-point welding of the left universal joint and the spline shaft, drive motor 1 to rotate the flange fixing ring 1 and the left universal joint, thereby rotating the spline shaft and the drive shaft tube. At the same time, drive motor 5 changes the horizontal height of the drive shaft tube, and drive motor 4 causes the spline shaft and the drive shaft tube to slide relative to each other, thereby simulating the state of the drive shaft during operation. At this time, an external detection device is used to detect the concentricity and balance of the left universal joint and the spline shaft during movement. When the left universal joint and the spline shaft meet the concentricity and balance requirements, the welding assembly is used to completely weld the weld position of the left universal joint and the spline shaft. S4: After the left universal joint and the spline shaft are completely welded, the latch is separated from the drive shaft tube by driving motor 4 and cylinder 2. At the same time, the right flange and the right universal joint are installed on flange fixing ring 2 using bolts. After that, the right universal joint is mated with the drive shaft tube, and four-point welding is performed on the mating points of the right universal joint and the drive shaft tube using a welding assembly. S5: After four-point welding of the right universal joint and the drive shaft tube, drive motors 1, 5, and 4 to simulate the state of the drive shaft during operation. At the same time, use an external detection device to detect the concentricity and balance of the right universal joint and the drive shaft tube during movement. When the right universal joint and the drive shaft tube meet the concentricity and balance requirements, use a welding assembly to completely weld the right universal joint and the drive shaft tube.

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