Multi-station linkage railway traction motor end cover welding equipment

Abstract

The invention relates to the technical field of welding equipment, and discloses multi-station linkage railway traction motor end cover welding equipment which comprises a machining table and a rotating table rotationally installed above the machining table, and a plurality of clamps used for limiting a machine shell and an end cover are arranged above the rotating table. A first support is fixedly connected to the top of the machining table, a first air cylinder is fixedly arranged at the top of the first support, an I-shaped rotating piece is fixedly arranged at the driving end of the first air cylinder, a welding mechanism capable of horizontally moving and rotating is arranged on the lower side of the I-shaped rotating piece, and collecting assemblies are installed on the inner side and the outer side of the machine shell. The collecting assembly comprises a dust collection head, an inner cylinder and an annular intercepting plate. The machine shell and the end cover are sequentially rotated to the welding mechanism station to be subjected to inner and outer double-layer welding and then rotated to the detection assembly station to be subjected to quality detection, automatic welding and detection of the traction motor end cover are achieved, and chippings can be automatically collected during welding.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a multi-station linkage welding equipment for railway traction motor end caps. Background Technology

[0002] The operating environment of railway traction motors is extremely complex. In addition to the conventional atmospheric environment, they must also withstand long-term exposure to rain and snow, condensation in tunnels, and splashing water from the track bed. Therefore, the sealing and waterproofing performance of the motor end cover is one of the core indicators to ensure the service life of the motor. The waterproofing design of the end cover welding equipment directly affects the waterproofing reliability of the welded end cover and the operational stability of the equipment itself. Although the outer welding between the traction motor housing and the end cover can provide a preliminary structural connection and basic waterproofing function, it is not enough to completely guarantee that the inside of the motor is not affected by water. The inner welding can further improve the welding sealing and welding strength.

[0003] A search revealed a welding fixture and method for an electric motor in publication CN118989818B, relating to the field of electric motor welding technology. This invention solves the technical problems of inconvenient operation and difficulty in aligning the welding torch during inner welding between the motor housing and end cover, thus affecting the quality of the inner welding. The fixture includes a welding table with evenly distributed limiting components on its top for defining the motor housing and end cover. A transmission mechanism for rotating the limiting components is installed inside the welding table. A guide component extending into the motor end cover passes through the welding table, with a portion of the guide component extending to the outside of the welding table away from the end cover. A movable component for mounting the welding torch is slidably mounted on the guide component, and a positioning mechanism for defining the welding torch's position is provided on the movable component. This invention not only facilitates double welding of the annular gap between the motor housing and end cover but also ensures that the welding torch is always aligned with the annular gap, thereby improving welding quality.

[0004] In the aforementioned application, during the welding process, the metal surface will melt and oxidize, producing debris. This application lacks the function of collecting and processing the debris, making it inconvenient for workers to operate and use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multi-station linkage welding equipment for railway traction motor end caps, solving the problem of the lack of corresponding debris collection function when performing double-layer welding on the inner and outer sides of the end cap.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a multi-station linkage railway traction motor end cover welding equipment, including a processing table and a rotary table rotatably mounted above the processing table. Multiple clamps for limiting the position of the housing and end cover are provided above the rotary table. A support is fixedly connected to the top of the processing table. A cylinder is fixedly installed on the top of the support. An I-shaped rotating component is fixedly installed at the driving end of the cylinder. A welding mechanism that can move and rotate horizontally is provided on the lower side of the I-shaped rotating component.

[0007] A collection assembly is installed on the inner and outer sides of the housing. The collection assembly includes a dust suction head, an inner cylinder, and an annular interceptor plate. The dust suction head is installed on the lower side of the welding mechanism. The top of the inner cylinder is fixed at the center of the I-shaped rotating part. A connecting rod is fixed at the top of the interceptor plate. The top of the connecting rod is fixed to the inner top wall of the I-shaped rotating part.

[0008] By adopting the above technical solution, the vacuum head is connected to the vacuum cleaner through the vacuum tube, and the operation of the vacuum cleaner generates negative pressure suction at the vacuum head to suck up debris.

[0009] Preferably, the interceptor plate includes a housing, the inner diameter of which is larger than the outer diameter of the casing, and a gap is left between the inner sidewall of the housing and the outer wall of the end cover for the welding mechanism to move. The housing is provided with an interception layer composed of several fan-shaped baffles, the inner diameter of which is the same as the outer diameter of the end cover. Several elastic and retractable rods are fixedly provided on the lower sidewall of the housing at the baffles, and one end of the inner rod of each rod is fixedly connected to the baffle.

[0010] Preferably, the inner bottom wall of the shell has several grooves, and a magnetic block one is vertically slidably connected in the grooves. A counterweight support column penetrating the shell is fixed at the bottom end of the magnetic block one. A magnetic block two that is magnetically repelled by the magnetic block one is embedded and fixed in the side of the baffle facing the magnetic block one.

[0011] Preferably, the collecting assembly includes a lower plate located below the I-shaped rotating component and fixed to the outer wall of the connecting rod. An L-shaped upper plate is slidably connected to the upper surface of the lower plate. An elastic element is fixedly connected to the opposite side of the lower plate and the upper plate. One end of the upper plate extends to the top of the housing and is vertically fixed with a limiting rod that fits against the outer wall of the housing. A locking block is fixed to the bottom end of the upper plate. A locking plate is provided below the locking block. A locking groove is opened on the upper surface of the locking plate, and one end of the locking plate is fixedly connected to one side wall of the bracket.

[0012] Preferably, the collecting assembly includes a connecting ring and a sliding frame that pass through the connecting rod. A rotating rod is rotatably connected between the outer wall of the connecting ring and the upper plate. The sliding frame is slidably installed on the inner bottom wall of the I-shaped rotating part and located on the horizontal movement trajectory of the welding mechanism. A sliding member is slidably connected to the inner wall of the connecting ring in an annular shape. A rotating rod is rotatably connected between the inner wall of the sliding member and the sliding frame.

[0013] Preferably, a second support is fixedly connected to the top of the processing table, a second cylinder is fixedly installed on the top of the second support, a detection component is installed above the rotary table, the detection component includes a piston cylinder fixed to the bottom of the drive end of the second cylinder, a sealing cover is fixed to the bottom end of the piston cylinder, a detection port is opened on the surface of the sealing cover and a pressure detector is fixed at the detection port, and a pressure boosting module is installed inside the piston cylinder.

[0014] Preferably, the booster module includes a piston block and a mounting plate that slide and seal with the piston cylinder. A counterweight is fixed on the top of the piston block, and a storage groove is formed on the side wall of the counterweight. A locking block with a trapezoidal cross-section is slidably connected inside the storage groove. An elastic element two is fixed together between the locking block and the inner side wall of the storage groove. A locking groove for accommodating the locking block is formed on the upper inner wall of the piston cylinder. A magnetic block three is built into the locking block. The mounting plate is fixed on the side wall of the bracket two, and a magnetic block four that is magnetically repelled by the magnetic block three is embedded and fixed at one end of the mounting plate.

[0015] Preferably, the booster module includes a plurality of reset rods, which are fixed in a ring shape on the upper surface of the rotary table.

[0016] Preferably, the clamp includes a T-shaped support platform fixed on the upper surface of the rotating platform. The upper surface of the support platform is provided with a limiting groove that matches the shape of the end cap. Several elastic and retractable rods are fixed on the surface of the support platform, and the inner rods of the rods fit against the outer wall of the housing.

[0017] Preferably, the welding mechanism includes an electric slide fixed to the bottom of the I-shaped rotating part, a second motor is fixedly connected to the bottom end of the slider of the electric slide, a mounting frame is fixedly connected to the drive shaft of the second motor, a welding gun is fixedly mounted at the bottom end of the mounting frame, and a dust suction head is fixedly mounted on the side wall of the mounting frame.

[0018] Working principle: The housing and end cover are stacked on the fixture. The fixture limits the position of the housing and end cover. The rotating table is driven by motor three, so that the fixture holding the housing and end cover to be processed rotates sequentially to the bottom of bracket one. Through the cooperation of welding mechanism and motor one, motor one drives the welding structure to rotate and weld the inner and outer sides of the connection between end cover and housing, thereby improving the sealing and waterproof performance of traction motor.

[0019] This invention provides a multi-station linkage welding device for railway traction motor end caps. It has the following advantages:

[0020] 1. This invention achieves automated welding and inspection of the traction motor end cover by sequentially rotating the housing and end cover to the welding mechanism station for double-layer welding, and then rotating them to the inspection component station for quality inspection. Furthermore, the welding process can automatically collect debris.

[0021] 2. During welding, the cylinder extends and drives the welding mechanism, inner cylinder and interceptor plate to descend. The bottom of the inner cylinder presses tightly against the inner bottom wall of the end cap, which has the effect of pressing and limiting the end cap. At the same time, it intercepts the welding debris, reduces the splash range of the debris in the end cap, and makes the debris stay below the movement trajectory of the dust suction head for comprehensive collection. After the interceptor plate descends, it can intercept the welding debris on the outside of the end cap so that the dust suction head can fully adsorb and collect the debris.

[0022] 3. In this invention, the lower plate abuts against the upper plate by the elastic force of the elastic element, causing the bottom of the upper plate to move to the top edge of the housing. At the same time, the limiting rod abuts against the outer wall of the housing. Thus, after the cylinder extends and descends, the top and outer edges of the housing are limited and pressed, preventing the housing from being misaligned due to lack of fixture support during welding.

[0023] 4. In this invention, the sealing cover is pressed down onto the housing by the second cylinder, so that the housing and end cover are kept sealed. Then, the internal pressure of the housing is increased by the pressurization module and monitored by the air pressure detector. The air tightness of the welded joint between the housing and the end cover can be detected by the monitored air pressure value. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a schematic diagram of the three-structure motor of the present invention;

[0026] Figure 3 This is a schematic diagram of the collection component structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the interceptor plate structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged view of point A;

[0029] Figure 6 This is a schematic diagram of the card block and card slot structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the welding mechanism structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the detection component structure of the present invention;

[0032] Figure 9 This is a cross-sectional schematic diagram of the piston cylinder and counterweight of the present invention.

[0033] Among them, 1. processing table; 2. rotary table;

[0034] 3. Fixture; 31. Supporting platform; 32. Limiting groove; 33. Rod II;

[0035] 4. Bracket 1; 5. Cylinder 1;

[0036] 6. Detection assembly; 601. Piston cylinder; 602. Sealing cover; 604. Piston block; 605. Counterweight block; 606. Storage slot; 607. Locking block; 608. Elastic element two; 609. Locking slot; 610. Mounting plate; 611. Magnetic block four; 612. Reset rod;

[0037] 7. Collection assembly; 701. Vacuum head; 702. Inner cylinder; 703. Interception plate; 704. Lower plate; 705. Upper plate; 706. Elastic element one; 707. Locking block; 708. Locking plate; 709. Locking slot; 710. Connecting ring; 711. Rotating rod one; 712. Sliding frame; 713. Rotating rod two; 714. Limiting rod; 715. Sliding element;

[0038] 7031. Shell; 7032. Baffle; 7033. Rod 1; 7034. Magnetic Block 1; 7035. Magnetic Block 2; 7036. Counterweight Support;

[0039] 8. Welding mechanism; 81. Electric slide table; 82. Motor II; 83. Mounting bracket; 84. Welding torch;

[0040] 9. I-shaped rotating component; 91. Fixed layer; 92. Motor 1; 93. Rotating layer;

[0041] 10. Connecting rod; 12. Cylinder II; 13. Bracket II; 14. Motor III. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see the appendix Figure 1 - Appendix Figure 4This invention provides a multi-station linkage railway traction motor end cover welding equipment, including a processing table 1 and a rotary table 2 rotatably mounted above the processing table 1. Multiple clamps 3 for limiting the position of the housing and end cover are provided above the rotary table 2. A bracket 4 is fixedly connected to the top of the processing table 1, and a cylinder 5 is fixedly mounted on the top of the bracket 4. An I-shaped rotating component 9 is fixedly mounted on the driving end of the cylinder 5. A welding mechanism 8 capable of horizontal movement and rotation is provided on the lower side of the I-shaped rotating component 9. A motor 14 is fixedly connected to the center of the processing table 1, and the driving end of the motor 14 is fixedly connected to the center of the rotary table 2. The I-shaped rotating component 9 includes a fixed layer 91, a motor 92 fixed to the lower surface of the fixed layer 91, and a rotating layer 93 fixed to the drive shaft of the motor 92. The motor 92 drives the rotating layer 93 to rotate, causing the welding mechanism 8 mounted on the rotating layer 93 to rotate synchronously.

[0044] Specifically, the housing and end cap are stacked on the fixture 3, which limits the position of the housing and end cap. The rotating table 2 is driven by the motor 14, so that the fixture 3, which holds the housing and end cap to be processed, rotates sequentially to the bottom of the bracket 4. Through the cooperation of the welding mechanism 8 and the motor 92, the motor 92 drives the welding structure to rotate and perform welding processing on the inner and outer sides of the connection between the end cap and the housing, thereby improving the sealing and waterproof performance of the traction motor.

[0045] Please see the appendix Figure 3 - Appendix Figure 4 The inner and outer sides of the casing are equipped with a collection component 7, which includes a suction head 701, an inner cylinder 702 and an annular interceptor plate 703. The suction head 701 is installed on the lower side of the welding mechanism 8. The top of the inner cylinder 702 is fixed at the center of the fixed layer 91. The top of the interceptor plate 703 is fixed with a connecting rod 10, and the top of the connecting rod 10 is fixed to the inner top wall of the fixed layer 91. The suction head 701 is connected to the vacuum cleaner through a suction pipe. After welding, the suction head 701 is driven by the motor 92 to rotate around the welding trajectory again to collect the welding debris.

[0046] Specifically, during welding, cylinder 5 extends, causing welding mechanism 8, inner cylinder 702, and interceptor plate 703 to descend. Welding mechanism 8 descends to the connection between the end cover and the inner side of the housing for welding, while the bottom of inner cylinder 702 presses tightly against the inner bottom wall of the end cover, effectively pressing and limiting the end cover and intercepting welding debris, reducing the splash range of debris inside the end cover, so that the debris stays below the moving trajectory of the suction head 701 for comprehensive collection. When welding the connection between the end cover and the outer side of the housing, cylinder 5 retracts, causing welding mechanism 8 to rise above the housing. Then welding mechanism 8 rotates and moves horizontally, allowing welding mechanism 8 to weld the connection between the end cover and the outer side of the housing during subsequent descent. After the interceptor plate 703 descends, it can intercept the welding debris on the outer side of the end cover, so that the suction head 701 can fully adsorb and collect the debris.

[0047] Please see the appendix Figure 3 - Appendix Figure 4 The fixture 3 includes a T-shaped support platform 31 fixed on the upper surface of the rotary table 2. The upper surface of the support platform 31 is provided with a limiting groove 32 that matches the shape of the end cover. Several elastic and retractable rods 33 are fixed on the surface of the support platform 31. The rods 33 consist of an outer cylinder and an inner rod that are slidably connected, as well as an elastic element that applies an elastic force to the inner rod and causes it to extend, and the inner rod of the rod 33 fits against the outer wall of the machine housing.

[0048] Specifically, the limiting groove 32 is used to place the end cap. The inner rod of the second rod 33 abuts against the outer wall of the end cap and the machine housing, so that the machine housing and the end cap are vertically stacked, preventing them from being misaligned or falling off during transportation, and making it convenient to place or remove them.

[0049] In embodiment 2, the interceptor plate 703 includes a housing 7031, the inner diameter of the housing 7031 is larger than the outer diameter of the casing, and there is a gap between the inner side wall of the housing 7031 and the outer wall of the end cover for the welding mechanism 8 to move. A flexible layer is fixed on the inner edge of the housing 7031, and the flexible layer is made of rubber material.

[0050] Specifically, the inner diameter of the housing 7031 is larger than the outer diameter of the casing, allowing the housing 7031 to pass through the weld seam on the outside of the end cover, while the flexible layer abuts against the outer wall of the end cover to intercept debris, preventing debris from falling into the gap between the housing 7031 and the end cover and affecting the debris collection effect.

[0051] Example 3, please refer to the appendix. Figure 3 - Appendix Figure 5Unlike Embodiment 2, since the high temperature of the debris can damage the flexible layer, this embodiment proposes the following solution to address the aforementioned problem: the interceptor plate 703 includes a housing 7031, the inner diameter of which is larger than the outer diameter of the casing, and a gap is left between the inner wall of the housing 7031 and the outer wall of the end cap for the welding mechanism 8 to move. The housing 7031 contains an interception layer composed of several fan-shaped baffles 7032, the inner diameter of which is the same as the outer diameter of the end cap. The lower side wall of the housing 7031 corresponds to the baffles 7032. Several elastic and retractable rods 7033 are fixed at position 032. One end of the inner rod of rod 7033 is fixedly connected to baffle 7032. Several grooves are opened on the inner bottom wall of shell 7031. Magnetic block 7034 is vertically slidably connected in the grooves. A counterweight support 7036 penetrating shell 7031 is fixedly provided at the bottom end of magnetic block 7034. Magnetic block 7035 is embedded and fixed on the side of baffle 7032 facing magnetic block 7034. The opposite sides of magnetic block 7034 and magnetic block 7035 are magnetically repelled. A semi-circular blocking block is fixed on the inner bottom wall of shell 7031 on the sliding trajectory of baffle 7032 to limit the sliding position of baffle 7032. Rod 7033 consists of an outer cylinder and an inner rod that are slidably connected, and an elastic element set in the outer cylinder to apply elastic force to the inner rod to extend it.

[0052] Specifically, when the interceptor plate 703 descends to its lowest point, on the one hand, the baffle plate 7032 presses down the second rod 33 so that its top is below the welding area, preventing the second rod 33 from obstructing the welding mechanism 8. On the other hand, the counterweight support 7036 moves upward against the clamp 3, pushing the first magnetic block 7034 into a groove, causing the first magnetic block 7034 and the second magnetic block 7035 to generate magnetic repulsion. This causes the baffle plate 7032 to slide against the outer wall of the end cover, thereby blocking the gap between the housing 7031 and the machine casing, preventing debris from falling into the gap and creating a cleaning dead corner. Welding is then complete. Then, when the interceptor plate 703 rises, firstly, the counterweight support 7036 pulls down the magnetic block 7034 by its own weight, causing the magnetic block 7034 to move into the groove, thereby isolating the magnetic force between the magnetic block 7034 and the magnetic block 7035. Secondly, the baffle 7032 moves away from the end cover and unfolds under the elastic tension of the rod 7033, thereby avoiding the baffle 7032 being blocked by the outer weld seam when rising. This allows the interceptor plate 703 to both block the end cover completely and not be blocked by the outer weld seam of the end cover, thus preventing it from rising.

[0053] Based on the above embodiments, please refer to the appendix. Figure 7The welding mechanism 8 includes an electric slide 81 fixedly mounted on the bottom of the rotating layer 93. The bottom end of the slider of the electric slide 81 is fixedly connected to a motor 82. The drive shaft of the motor 82 is fixedly connected to a mounting frame 83. The bottom end of the mounting frame 83 is fixedly mounted with a welding gun 84. The dust suction head 701 is fixedly mounted on the side wall of the mounting frame 83.

[0054] Specifically, when welding the inner side of the end cap, the electric slide table 81 drives the welding torch 84 to move to the upper part of the inner side of the end cap. The motor 82 adjusts the orientation of the welding torch 84 so that the welding torch 84 can face the welding point on the inner side of the end cap for welding. When welding the outer side of the end cap, the electric slide table 81 drives the welding torch to move to the upper part of the outer side of the end cap. The motor 82 adjusts the orientation of the welding torch 84 so that the welding torch 84 can face the welding point on the outer side of the end cap for welding.

[0055] Please see the appendix Figure 3 - Appendix Figure 4 The collecting assembly 7 includes a lower plate 704 located below the I-shaped rotating member 9 and fixed to the outer wall of the connecting rod 10. An L-shaped upper plate 705 is slidably connected to the upper surface of the lower plate 704. An elastic element 706 is fixedly connected to the opposite side of the lower plate 704 and the upper plate 705. The elastic element can be a leaf spring, a coil spring, a torsion bar spring, a rubber spring, etc., preferably a coil spring. One end of the upper plate 705 extends to the top of the housing and is vertically fixed with a limiting rod 714 that fits against the outer wall of the housing. The collecting assembly 7 includes a connecting rod that passes through the connecting rod 10. The connecting ring 710 and the sliding frame 712 are connected by a rotating rod 711 rotatably between the outer wall of the connecting ring 710 and the upper plate 705. The sliding frame 712 is slidably mounted on the inner bottom wall of the rotating layer 93 and is located on the horizontal movement trajectory of the welding mechanism 8. Its sliding trajectory is consistent with the horizontal movement trajectory of the welding mechanism 8. The inner wall of the connecting ring 710 is slidably connected to a sliding member 715 in an annular shape. A rotating rod 713 rotatably connects the sliding member 715 and the sliding frame 712. The sliding frame 712 can be fixedly connected to the slider of the electric slide table 81.

[0056] Specifically, when the electric slide table 81 moves the welding torch 84 to the upper inner side of the end cover, the lower plate 704, through the elastic force of the elastic element 706, has its bottom end abut against the upper plate 705, causing the bottom end of the upper plate 705 to move to the top edge of the housing. At the same time, the limiting rod 714 abuts against the outer wall of the housing, thereby limiting and pressing the top and outer edge of the housing after the cylinder 5 extends and descends, preventing the housing from shifting due to lack of support from the clamp 3 during welding. When the electric slide table 81 moves the welding torch 84 to the upper outer side of the end cover, the slider of the electric slide table 81 synchronously pushes the sliding frame 712 to move. 12 The sliding member 715 is pressed down by the rotating rod 2 713. The sliding member 715 drives the connecting ring 710 to descend along the connecting rod 10. The rotating rod 1 711 rotates and pushes the upper plate 705 to move away from the machine housing. This makes the limiting rod 714 and the upper plate 705 away from the machine housing, avoiding obstruction of the descent and rotation of the welding mechanism 8. This allows the welding mechanism 8 to weld the outer side of the end cover. When the I-shaped rotating member 9 rotates, it drives the sliding member 715 to rotate along the connecting ring 710, which can continuously press down the connecting ring 710, thereby simultaneously adjusting the positions of multiple limiting rods 714 and the upper plate 705.

[0057] Please see the appendix Figure 6 A locking block 707 is fixedly provided at the bottom of the upper plate 705. A locking plate 708 is provided below the locking block 707. A locking groove 709 is provided on the upper surface of the locking plate 708, and one end of the locking plate 708 is fixedly connected to the side wall of the bracket 4.

[0058] Specifically, when the electric slide table 81 moves the welding torch 84 to the upper part of the inner side of the end cover, the locking block 707 is located directly above the slot 709. After the cylinder 5 extends, the locking block 707 is inserted into the slot 709, thereby locking the upper plate 705. This allows the upper plate 705 and the limiting rod 714 to stably limit and press the top and outer edge of the housing, preventing elastic shaking.

[0059] Please see the appendix Figure 8 A support frame 13 is fixedly connected to the top of the processing table 1. A cylinder 12 is fixedly installed on the top of the support frame 13. A detection assembly 6 is installed above the rotary table 2. The detection assembly 6 includes a piston cylinder 601 fixed to the bottom of the drive end of the cylinder 12. A sealing cover 602 is fixed to the bottom end of the piston cylinder 601. A sealing ring is fixed to the inner bottom wall of the sealing cover 602 to improve the sealing with the machine housing. A detection port is opened on the surface of the sealing cover 602 and a pressure detector is fixed at the detection port. A pressurization module is installed inside the piston cylinder 601. An exhaust valve is installed on the sealing cover 602 to open the exhaust valve after the detection is completed.

[0060] Specifically, after the end cap welding is completed, the rotating table 2 is driven by motor 314 to move the end cap to the bottom of the detection component 6 for air tightness testing. The sealing cover 602 is pressed down on the housing by cylinder 212 to keep the housing and the end cap inside sealed. Then, the inside of the housing is pressurized by the pressurization module and monitored by the air pressure detector. The air tightness of the welded joint between the housing and the end cap can be tested by the monitored air pressure value.

[0061] Please see the appendix Figure 8 - Appendix Figure 9 The booster module includes a piston block 604 and a mounting plate 610 that slide and seal with the piston cylinder 601. A counterweight 605 is fixed on the top of the piston block 604. A storage groove 606 is opened on the side wall of the counterweight 605. A locking block 607 with a trapezoidal cross-section is slidably connected inside the storage groove 606. An elastic element 608 is fixed between the locking block 607 and the inner side wall of the storage groove 606. A locking groove 609 for accommodating the locking block 607 is opened on the upper inner wall of the piston cylinder 601. A magnetic block 3 is built into the locking block 607. The mounting plate 610 is fixed on the side wall of the bracket 13. A magnetic block 4 611 is embedded and fixed at one end of the mounting plate 610. The magnetic blocks 3 and 4 611 repel each other magnetically. A guide rod is fixed on the top of the counterweight 605. The guide rod passes through the top of the piston cylinder 601.

[0062] Specifically, the locking block 607 is inserted into the locking groove 609 by the elastic force of the elastic element 608, which limits the counterweight 605. When the sealing cover 602 is pressed down on the housing, the locking block 607 moves to the magnetic block 611. Through the magnetic repulsion between the magnetic block 3 and the magnetic block 611, the locking block 607 is pushed out of the locking groove 609. The counterweight 605 presses down on the piston block 604 by its own weight, thereby increasing the internal pressure of the housing for detection.

[0063] Please see the appendix Figure 8 The booster module includes several reset rods 612. The reset rods 612 are fixed in a ring on the upper surface of the rotary table 2. The top of the reset rod 612 is higher than the mounting plate 610. When the counterweight 605 pushes against the reset rod 612 to reset and lock again, the magnetic block three and magnetic block four 611 are staggered.

[0064] Specifically, after the test is completed, cylinder 2 12 retracts and rises, driving the rotary table 2 to rotate via motor 3 14, causing the reset rod 612 to move below the sealing cover 602. Then, cylinder 2 12 descends, causing the counterweight 605 to press against the reset rod 612 and rise until the locking block 607 moves to the locking groove 609 to lock again, thereby realizing the automatic reset of the piston block 604 and enabling repeated testing.

[0065] The workflow involves stacking the housing and end cap on the fixture 3, which then limits their movement. The rotating table 2 is driven by motor 314, causing the fixture 3, which holds the housing and end cap to be processed, to rotate sequentially to below the support 4. Through the cooperation of welding mechanism 8 and motor 92, motor 92 drives the welding structure to rotate, performing welding processing on the inner and outer sides of the connection between the end cap and the housing, thereby improving the sealing and waterproof performance of the traction motor.

[0066] During welding, cylinder 5 extends, causing welding mechanism 8, inner cylinder 702, and interceptor plate 703 to descend. Welding mechanism 8 descends to the connection between the end cover and the inner side of the housing for welding, while the bottom of inner cylinder 702 presses tightly against the inner bottom wall of the end cover, effectively pressing and limiting the end cover and intercepting welding debris, reducing the splash range of debris inside the end cover, so that the debris stays below the moving trajectory of the suction head 701 for comprehensive collection. When welding the connection between the end cover and the outer side of the housing, cylinder 5 retracts, causing welding mechanism 8 to rise above the housing. Then welding mechanism 8 rotates and moves horizontally, allowing welding mechanism 8 to weld the connection between the end cover and the outer side of the housing during subsequent descent. After the interceptor plate 703 descends, it can intercept the welding debris on the outer side of the end cover, so that the suction head 701 can fully adsorb and collect the debris.

[0067] After the end cap welding is completed, the rotating table 2 is driven by motor 314 to move the end cap to the bottom of the detection component 6 for air tightness testing. The sealing cover 602 is pressed down on the housing by cylinder 212 to keep the housing and the end cap inside sealed. Then, the inside of the housing is pressurized by the pressurization module and monitored by the air pressure detector. The air tightness of the welded joint between the housing and the end cap can be detected by the monitored air pressure value.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station linkage railway traction motor end cover welding device, comprising a machining table (1) and a rotating table (2) rotatably installed above the machining table (1), a plurality of clamps (3) for limiting the shell and the end cover are arranged above the rotating table (2), characterized in that: The top of the processing platform (1) is fixedly connected with a support one (4), the top of the support one (4) is fixedly provided with a cylinder one (5), the driving end of the cylinder one (5) is fixedly provided with a I-shaped rotating piece (9), the lower side of the I-shaped rotating piece (9) is provided with a welding mechanism (8) which can move horizontally and rotate; The inside and outside of the shell are provided with a collecting assembly (7), the collecting assembly (7) comprises a dust collection head (701), an inner cylinder body (702) and an annular intercepting plate (703), the dust collection head (701) is installed on the lower side of the welding mechanism (8), the inner cylinder body (702) is fixedly arranged at the center of the I-shaped rotating piece (9), the top end of the intercepting plate (703) is fixedly provided with a connecting rod (10), and the top end of the connecting rod (10) is fixedly arranged on the inner top wall of the I-shaped rotating piece (9).

2. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 1, wherein: The intercepting plate (703) comprises a shell (7031), the inner diameter of the shell (7031) is greater than the outer diameter of the shell, and a space is left between the inner side wall of the shell (7031) and the outer wall of the end cover for the movement of the welding mechanism (8), a plurality of fan-shaped baffles (7032) are arranged in the shell (7031) to form an intercepting layer, the inner diameter of the intercepting layer is the same as the outer diameter of the end cover, a plurality of elastic telescopic rod members one (7033) are fixedly arranged on the lower side wall of the shell (7031) and correspond to the baffles (7032), and one end of the rod member one (7033) is fixedly connected with the baffle (7032).

3. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 2, wherein: A plurality of grooves are formed in the inner bottom wall of the shell (7031), a magnetic block one (7034) is vertically and slidably connected in the grooves, the bottom end of the magnetic block one (7034) is fixedly provided with a counterweight support column (7036) penetrating through the shell (7031), and a magnetic block two (7035) which is magnetically repulsive with the magnetic block one (7034) is embedded and fixedly arranged on the side of the baffle (7032) facing the magnetic block one (7034).

4. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 1, wherein: The collecting assembly (7) comprises a lower plate body (704) which is arranged on the lower side of the I-shaped rotating piece (9) and is fixedly arranged on the outer wall of the connecting rod (10), an L-shaped upper plate body (705) is slidably connected to the upper surface of the lower plate body (704), an elastic member one (706) is fixedly connected to the opposite sides of the lower plate body (704) and the upper plate body (705), one end of the upper plate body (705) extends to the upper side of the shell and is fixedly arranged perpendicularly to the limiting rod (714) which is attached to the outer wall of the shell, a clamping block (707) is fixedly arranged at the bottom end of the upper plate body (705), a clamping plate (708) is arranged below the clamping block (707), a clamping groove (709) is formed in the upper surface of the clamping plate (708), and one end of the clamping plate (708) is fixedly connected with the side wall of the support one (4).

5. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 1, wherein: The collecting assembly (7) comprises a connecting ring (710) penetrating through the connecting rod (10), a sliding frame (712) and a rotating rod I (711) which is in rotation connection between the outer side wall of the connecting ring (710) and the upper plate body (705), the sliding frame (712) is slidingly installed on the inner bottom wall of the I-shaped rotating piece (9) and is located on the horizontal moving track of the welding mechanism (8), the inner side wall of the connecting ring (710) is in sliding connection with a sliding piece (715) in the form of a ring, and the inner side wall of the sliding piece (715) is in rotation connection with a rotating rod II (713) between the sliding frame (712).

6. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 1, wherein: The top of the processing table (1) is fixedly connected with a second support (13), the top of the second support (13) is fixedly provided with a second air cylinder (12), a detection assembly (6) is installed above the rotating table (2), the detection assembly (6) comprises a piston cylinder (601) fixedly arranged at the bottom of the driving end of the second air cylinder (12), the bottom end of the piston cylinder (601) is fixedly provided with a sealing cover (602), a detection opening is formed in the surface of the sealing cover (602) and an air pressure detector is fixedly arranged at the detection opening, and a pressure increasing module is arranged in the piston cylinder (601).

7. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 6 wherein: The pressure increasing module comprises a piston block (604) and a mounting plate (610) in sliding sealing cooperation with the piston cylinder (601), the top of the piston block (604) is fixedly provided with a counterweight block (605), the side wall of the counterweight block (605) is provided with a receiving groove (606), the receiving groove (606) is in sliding connection with a locking block (607) with a trapezoidal cross section, the locking block (607) and the inner side wall of the receiving groove (606) are jointly fixedly provided with an elastic member II (608), the upper inner wall of the piston cylinder (601) is provided with a locking groove (609) for accommodating the locking block (607), the locking block (607) is internally provided with a magnetic block III, the mounting plate (610) is fixedly arranged on the side wall of the second support (13), and a magnetic block IV (611) repelling the magnetic block III is embedded in one end of the mounting plate (610).

8. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 6, wherein: The pressure increasing module comprises a plurality of reset rods (612), and the reset rods (612) are fixedly arranged on the upper surface of the rotating table (2) in the form of a ring.

9. A multi-station linked railway traction motor end shield welding apparatus as defined in claim 1 wherein: The clamp (3) comprises a T-shaped bearing table (31) fixedly arranged on the upper surface of the rotating table (2), the upper surface of the bearing table (31) is provided with a limiting groove (32) matched with the shape of the end cover, and a plurality of elastic and retractable rod members II (33) are fixedly arranged on the surface of the bearing table (31), and the inner rod of the rod member II (33) is attached to the outer side wall of the shell.

10. The multi-station linked railway traction motor end shield welding apparatus of claim 1, wherein: The welding mechanism (8) comprises an electric sliding table (81) fixedly arranged at the bottom of the I-shaped rotating piece (9), a sliding block of the electric sliding table (81) is fixedly connected with a second motor (82), a driving shaft of the second motor (82) is fixedly connected with a mounting bracket (83), the bottom end of the mounting bracket (83) is fixedly provided with a welding gun (84), and the dust collection head (701) is fixedly arranged on the side wall of the mounting bracket (83).

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