Transmission shaft welding device and using method thereof

Abstract

The invention provides a transmission shaft welding device and a using method thereof, and belongs to the technical field of transmission shaft production auxiliary facilities. Comprising a workbench and a transmission shaft assembly. The first flange fixing ring is arranged to be fixed to the left flange plate, meanwhile, the transmission shaft pipe and the spline shaft are installed in the simulation device, the welding seam position of the spline shaft and the left universal joint assembly is subjected to primary welding through a welding machine, and then the state of the transmission shaft in the working process is simulated through the simulation device; after the spline shaft and the left universal joint assembly which are subjected to primary welding meet the detection requirement, complete welding is conducted through a welding assembly, similarly, a second flange fixing ring is arranged to be fixed to a right flange plate, and after a welding machine is used for conducting primary welding on the welding seam position of the right universal joint assembly and the transmission shaft pipe, the spline shaft and the left universal joint assembly are subjected to secondary welding; the state of the transmission shaft in the working process is simulated through the simulation device, complete welding is carried out after the detection requirement is met, and the problems that an existing welding device is low in yield and complex in working step are solved.

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 use method thereof. 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, and 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 dynamically detects 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 drive shaft manufactured by this welding method has a low yield rate, and 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 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 transmission shaft welding device and a method of using the same. A flange fixing ring 1 is set to fix it to a left flange plate, and a transmission shaft tube and a spline shaft are installed inside a simulation device. After the spline shaft and the left universal joint assembly are initially welded by a welding machine, the state of the transmission shaft during operation is simulated by a simulation device. After the initially welded spline shaft and the left universal joint assembly meet the inspection requirements, they are completely welded by welding. Similarly, a flange fixing ring 2 is set to fix it to a right flange plate, and after the right universal joint assembly and the transmission shaft tube are initially welded by a welding machine, the state of the transmission shaft during operation is simulated by a simulation device. After the spline shaft and the left universal joint assembly meet the inspection requirements, they are 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 transmission shaft welding device, comprising a workbench and a transmission shaft assembly, a positioning frame is fixedly installed on the top left side of the workbench, and the front end surface of the top of the positioning frame is rotatably connected with 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 top right side of the workbench; the transmission shaft assembly comprises a transmission shaft tube, a spline shaft is cooperatively installed on the tube wall at the left end of the transmission 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 tube wall at the right end of the transmission 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 end wall of the left flange, the welding assembly can weld the weld position of the left universal joint assembly and the spline shaft, and the right flange and the transmission shaft tube can 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 meshed 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 one and a fixing seat two are fixedly installed at both ends of the slide rail three, a threaded slide seat three is meshed on the screw rod 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 an insertion rod is fixedly installed on the top of the fixing seat two, and the insertion rod slides through the top side wall of the threaded slide seat three.

[0008] Optionally, the simulation device also includes a base, and slide rails four are fixedly installed on both side walls of the base, cross plates are provided on both sides of the fixing seat one and the threaded slide seat three, the two ends of the bottom of the cross plate are rotatably connected to the side walls of the fixing seat one and the threaded slide seat three respectively, 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 four.

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

[0010] Optionally, a second cylinder is fixedly installed at the top end of the base, and the two ends of the base are slidably connected to the same sliding table, and the sliding table is located between the vertical table and the second cylinder. The side wall of the sliding table 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 table.

[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, an outer shell is fixedly installed on the top side wall of the slide seat 1, 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 shell body is slidably connected with a displacement seat, and the displacement seat is slidably connected with a limit rod, the screw rod 1 penetrates the displacement seat, the top inner wall of the displacement seat is rotatably connected with an internally threaded sleeve 1, and the internally threaded sleeve 1 is meshed 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 with a gear 2, and the gear 2 is meshed 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 with 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 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.

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

[0015] S1: When welding the weld position of the left universal joint assembly and the spline shaft at the left end of the transmission shaft tube, insert the latch into the assembly of the spline shaft and the transmission shaft tube, and then drive the second cylinder to push the sliding table and the latch, so that the transmission shaft tube and the latch are fixed together. At the same time, the left flange and the left universal joint assembly are installed on the flange fixing ring 1 by bolts;

[0016] S2: The motor 5 is driven to drive the threaded slide 3 to slide on the slide 2, so that the height of the base is changed through the action of the cross plate, so that the horizontal height of the transmission shaft tube plugged with the pin on the base is the same as the height of the left universal joint assembly. After that, the weld positions of the left universal joint assembly and the spline shaft are matched, and the welds of the left universal joint assembly and the spline shaft are four-point welded by using a welding assembly;

[0017] S3: After four-point welding of the left universal joint assembly and the spline shaft, the driving motor 1 drives the flange fixing ring 1 and the left universal joint assembly to rotate, thereby driving the spline shaft and the transmission shaft tube to rotate, and at the same time, the driving motor 5 changes the horizontal height of the transmission shaft tube, and the driving motor 4 causes the spline shaft and the transmission shaft tube to slide relative to each other, thereby simulating the state of the transmission shaft during the working process. At this time, the concentricity and balance of the left universal joint assembly and the spline shaft during the 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;

[0018] S4: After the left universal joint assembly and the spline shaft are completely welded, the latch and the drive shaft tube are separated by driving the fourth motor and the second cylinder. At the same time, the right flange and the right universal joint assembly are installed on the second flange fixing ring by bolts. After that, the right universal joint assembly is matched with the drive shaft tube, and the right universal joint assembly and the drive shaft tube are welded at four points by using a welding assembly.

[0019] S5: After four-point welding of the right universal joint assembly and the drive shaft tube, drive motor 1, motor 5 and motor 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 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 provided to fix it with the left flange plate, and at the same time, 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 a 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 flange fixing ring two by bolts. Thereafter, the right universal joint assembly and the drive shaft tube are matched, and the right universal joint assembly and the drive shaft tube are welded at four points by using a welding assembly. The state of the drive shaft during operation is simulated by driving motor one, motor five and motor four. 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 right universal joint assembly and the drive shaft tube are completely welded by using a welding assembly. 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 those skilled in the relevant art to make and use the invention.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of a transmission shaft welding device;

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

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

[0027] Figure 4 The figure is a schematic diagram of welding the right universal joint assembly and the transmission shaft tube by a welding machine;

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

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

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

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

[0032] Fig. 9 It is a structural schematic diagram of a welding assembly;

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

[0034] Fig.11 is a schematic diagram of the internal structure of the outer shell;

[0035] Fig.12 is a diagram showing the meshing state of a screw rod 1 and an internally threaded sleeve 1;

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

[0037] Fig.14 It is a structural schematic diagram of the simulation device;

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

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

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

[0041] Fig.18 This is a right side exploded view of the components on the base.

[0042] Reference numerals:

[0043] 100, workbench; 110, control panel; 120, positioning frame; 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 thread 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. Tightening seat 1; 221. Tightening 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. Sliding 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 is a detailed description of a transmission shaft welding device and a method of using the same provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically 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 top of the left side of the workbench 100, and a flange fixing ring 122 is rotatably connected to the front end surface of the top of the positioning frame 120 through a bearing, and 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 arranged on the workbench 100, and a simulation device 200 is movably arranged on the top of the right side of the workbench 100;

[0047] The transmission shaft assembly 300 includes a transmission shaft tube 310, a spline shaft 320 is mounted on the left end of the transmission shaft tube 310, the transmission shaft tube 310 and the spline shaft 320 are assembled together by pre-processing before welding, a left universal joint assembly 330 and a left flange 340 are arranged on the left side of the spline shaft 320, and a right universal joint assembly 350 and a right flange 360 ​​are arranged on the right end of the transmission 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 transmission 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 transmission shaft tube 310, the latch 235 is inserted into the assembly of the spline shaft 320 and the transmission shaft tube 310, and then the cylinder 236 is driven to push the sliding table 234 and the latch 235, so that the transmission 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 by bolts, and the threaded slide seat 3 222 is driven by the driving motor 5 214 to slide on the slide seat 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 transmission 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 the weld position of the left universal joint assembly 330 and the spline shaft 320 are matched, the weld position of the left universal joint assembly 330 and the spline shaft 320 is four-point welded by the welding assembly 130, so as to pre-weld the left end of the transmission shaft tube 310.

[0049] As an implementation method in this embodiment, Fig.13 and Fig.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 meshed with the second screw 151, three slide rails 212 are 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 5 214 is fixedly installed on the top, and the output end of the motor 5 214 is fixedly connected to the end wall of the screw rod 3 213. In the present invention, if it is necessary to simulate the relative displacement between the transmission shaft tube 310 and the spline shaft 320, or to separate the latch 235 from the transmission shaft tube 310, the motor 4 152 is driven to drive the screw rod 2 151 to engage with the internal threaded seat 211, so that the slide 210 slides on the slide rail 2 150, thereby driving the latch 235 on the slide 210 to move, so that the latch 235 pulls the transmission shaft tube 310 outward, and finally separates the transmission shaft tube 310 from the latch 235.

[0050] A fixing seat 1 220 and a fixing seat 221 are fixedly installed at both ends of the slide rail 3 212, a threaded slide seat 3 222 is meshed on the screw rod 3 213, and the threaded slide seat 3 222 is slidably connected to the slide rail 3 212, the threaded slide seat 3 222 is located between the fixing seat 1 220 and the fixing seat 221, an insertion rod 223 is fixedly installed on the top of the fixing seat 221, and the insertion rod 223 slides through the top side wall of the threaded slide seat 3 222, and the motor 5 214 is driven to drive the screw rod 3 213 to mesh with the threaded slide seat 3 222, so that the threaded slide seat 3 222 slides on the slide rail 3 212.

[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 rotatably connected to the side walls of the fixing seat 1 220 and the threaded slide seat 3 222 respectively, 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 latch 235 is separated from the transmission shaft tube 310 by driving the motor 4 152 and the cylinder 2 236. At the same time, the right flange 360 ​​and the right universal joint assembly 350 are installed to the On the flange fixing ring 233, after 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, and at the same time, the concentricity and balance of the right universal joint assembly 350 and the drive shaft tube 310 during the movement are detected by an external detection device. 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] A second cylinder 236 is fixedly installed at the top end of the base 230. The two ends of the base 230 are slidably connected with the same sliding table 234, and the sliding table 234 is located between the vertical table 232 and the second cylinder 236. The side wall of the sliding table 234 is rotatably connected with a latch 235 through a bearing. The latch 235 has a taper setting, and the sliding table 234 can be pushed outward by driving the second cylinder 236, so that the latch 235 is inserted into the transmission shaft tube 310. At the same time, the greater the displacement pushed by the second cylinder 236, the tighter the fit between the latch 235 and the transmission shaft tube 310. The latch 235 is plugged into the inner wall of the right end of the transmission shaft tube 310, and the output shaft of the second cylinder 236 is fixedly connected to the end wall of the sliding table 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 transmission shaft tube 310 to rotate. At the same time, the driving motor 5 214 changes the horizontal height of the transmission shaft tube 310, and the driving motor 4 152 causes the spline shaft 320 and the transmission shaft tube 310 to slide relative to each other, thereby simulating the state of the transmission 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 seat 133, a slide rail 131 is fixedly installed on the top of the workbench 100, and the slide seat 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 seat 133, an outer shell 134 is fixedly installed on the top side wall of the slide seat 133, 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 inner wall of the middle part 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 the cylinder 3 132 is driven to drive the slide seat 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 with a displacement seat 140, and the displacement seat 140 is slidably connected with the limiting rod 135, the screw 136 penetrates the displacement seat 140, the inner wall of the top of the displacement seat 140 is rotatably connected with an internal threaded sleeve 141, and the internal threaded sleeve 141 is meshed with the screw 136, and 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 with a gear 2 143, and the gear 2 143 is meshed with the gear 1 142, 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 with the gear 2 143, and the outer wall of the displacement seat 140 is fixedly installed with a motor 3 144. 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 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 move 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 member 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 position of the left universal joint assembly 330 and the spline shaft 320 at the left end of the transmission shaft tube 310, insert the latch 235 into the assembly of the spline shaft 320 and the transmission shaft tube 310, and then drive the second cylinder 236 to push the sliding table 234 and the latch 235, so that the transmission 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 1 122 by bolts;

[0059] S2: The motor 5 214 is driven 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 transmission shaft tube 310 plugged with the latch 235 on the base 230 is the same as the height of the left universal joint assembly 330. After that, after the weld positions of the left universal joint assembly 330 and the spline shaft 320 are matched, the welding assembly 130 is used to perform four-point welding on the weld 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 121 drives the flange fixing ring 122 and the left universal joint assembly 330 to rotate, thereby driving the spline shaft 320 and the transmission shaft tube 310 to rotate, and at the same time, the driving motor 5 214 changes the horizontal height of the transmission shaft tube 310, and the driving motor 4 152 causes the spline shaft 320 and the transmission shaft tube 310 to slide relative to each other, thereby simulating the state of the transmission 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;

[0061] S4: After the weld seam between the left universal joint assembly 330 and the spline shaft 320 is completely welded, the latch 235 is separated from the transmission shaft tube 310 by driving the fourth motor 152 and the second cylinder 236. At the same time, the right flange 360 ​​and the right universal joint assembly 350 are installed on the second flange fixing ring 233 by bolts. Thereafter, the weld seam between the right universal joint assembly 350 and the transmission shaft tube 310 is welded at four points by 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 covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not 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 principle of the present invention. These improvements and modifications should also be regarded as 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 a flange fixing ring 1 is rotatably connected to the front end surface of the top of the positioning frame through a bearing. A welding assembly is movably arranged on the workbench, and a simulation device is movably arranged 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 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 of the transmission shaft tube; The left flange is fixedly connected to a flange fixing ring by bolts, the left universal joint assembly is fixedly connected to the left flange end wall, the welding assembly can weld the weld position of the left universal joint assembly and the spline shaft, and the right flange and the transmission shaft tube can be used in conjunction with the simulation device.

2. A transmission shaft welding device according to claim 1, characterized in that: 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 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 meshed 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.

3. A transmission shaft welding device according to claim 2, characterized in that: 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.

4. A transmission shaft welding device according to claim 3, characterized in that: The simulation device also includes a base, and two side walls of the base are fixedly installed with sliding rails four, and cross plates are provided on both sides of the fixing seat one and the threaded sliding seat three. 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 sliding seat three, 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 sliding rail four.

5. A transmission shaft welding device according to claim 4, characterized in that: A vertical platform is fixedly installed on the top of the base, a flange fixing ring 2 is rotatably connected to the middle of the vertical platform through a bearing, the right flange is fixedly connected to the flange fixing ring 2 through bolts, the right universal joint assembly is fixedly connected to the right flange end wall, and the welding assembly can weld the right universal joint assembly to the transmission shaft tube.

6. A transmission shaft welding device according to claim 5, characterized in that: A second cylinder 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 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.

7. 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 the cylinder 3 is fixedly connected to the end wall of the slide seat 1, an outer shell is fixedly installed on the top side wall of the slide seat 1, 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 in the middle 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.

8. A transmission shaft welding device according to claim 7, characterized in that: The inner wall of the shell body is slidably connected with a displacement seat, and the displacement seat is slidably connected with the limit rod, the screw rod 1 penetrates the displacement seat, the top inner wall of the displacement seat is rotatably connected with an internal threaded sleeve 1, and the internal threaded sleeve 1 is meshed with the screw rod 1, the outer wall of the internal threaded sleeve 1 is fixedly installed with a gear 1, the top of the displacement seat is rotatably connected with a gear 2, and the gear 2 is meshed 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 with 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.

9. A transmission shaft welding device according to claim 1, 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.

10. The method for using a transmission shaft welding device according to claim 1, characterized in that: The specific steps are as follows: S1: When welding the weld position of the left universal joint assembly and the spline shaft at the left end of the transmission shaft tube, insert the latch into the assembly of the spline shaft and the transmission shaft tube, and then drive the second cylinder to push the sliding table and the latch, so that the transmission shaft tube and the latch are fixed together. At the same time, the left flange and the left universal joint assembly are installed on the flange fixing ring 1 by bolts; S2: The motor 5 is driven to drive the threaded slide 3 to slide on the slide 2, so that the height of the base is changed through the action of the cross plate, so that the horizontal height of the transmission shaft tube plugged with the pin on the base is the same as the height of the left universal joint assembly. After that, the weld positions of the left universal joint assembly and the spline shaft are matched, and the welds of the left universal joint assembly and the spline shaft are four-point welded by using a welding assembly; S3: After four-point welding of the left universal joint assembly and the spline shaft, the driving motor 1 drives the flange fixing ring 1 and the left universal joint assembly to rotate, thereby driving the spline shaft and the transmission shaft tube to rotate, and at the same time, the driving motor 5 changes the horizontal height of the transmission shaft tube, and the driving motor 4 causes the spline shaft and the transmission shaft tube to slide relative to each other, thereby simulating the state of the transmission shaft during the working process. At this time, the concentricity and balance of the left universal joint assembly and the spline shaft during the 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; S4: After the left universal joint assembly and the spline shaft are completely welded, the latch and the drive shaft tube are separated by driving the fourth motor and the second cylinder. At the same time, the right flange and the right universal joint assembly are installed on the second flange fixing ring by bolts. After that, the right universal joint assembly is matched with the drive shaft tube, and the right universal joint assembly and the drive shaft tube are welded at four points by using a welding assembly. S5: After four-point welding of the right universal joint assembly and the drive shaft tube, drive motor 1, motor 5 and motor 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 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.

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