Thick stainless steel plate spot welding sliding fixture for rail transit vehicles

Abstract

This invention discloses a sliding fixture for spot welding thick stainless steel plates for rail transit vehicles, relating to the field of sliding fixtures for track construction. It includes: a fixture body and an electric slide table mounted on top of the fixture body. A movable plate is mounted on the top of the electric slide table, a fixed frame is mounted on the top of the movable plate, and four outer support cylinders are mounted on the top of the fixed frame. Support cylinders are slidably mounted on the inner sides of the outer support cylinders, and a fixed platform is installed between the four support cylinders. It also includes: a lifting mechanism for smoothly lifting the fixed platform. The lifting mechanism is mounted on the inner side of the support cylinders and includes an inner support cylinder disposed within the inner side of the support cylinders. Through the lifting mechanism, this invention enables the support cylinders to move along the inner side of the outer support cylinders and the outer side of the inner support cylinders when the support cylinders push the fixed platform upwards, improving the stability of the bottom of the support cylinders. This allows the spot welding equipment to smoothly spot weld stainless steel, achieving a smooth lifting effect and ensuring the accuracy of the spot welding equipment in processing stainless steel.

Description

Technical Field

[0001] This invention relates to the field of sliding fixtures for track construction, specifically to a sliding fixture for spot welding thick stainless steel plates for rail transit vehicles. Background Technology

[0002] In the manufacturing process of rail transit vehicles, thick stainless steel plates are required for processing. When spot welding stainless steel plates, a sliding fixture can be used to support the plates, which can not only stably position and lock the spot welding equipment, effectively preventing problems such as equipment shaking and displacement during welding, but also significantly improve the precision of spot welding and the convenience of operation.

[0003] Existing spot welding sliding fixtures, designed to accommodate stainless steel plates of varying thicknesses, typically employ multiple sets of telescopic rods in conjunction with a drive shaft to adjust the height of the fixed platform. The fixed platform then carries the spot welding equipment to achieve spot welding of workpieces of different thicknesses. However, once the telescopic rods are extended, the overall slenderness ratio increases significantly, resulting in a substantial decrease in the overall bending stiffness of the fixture. Furthermore, the vibrations generated by the spot welding equipment directly induce slight wobbling of the fixed platform, leading to defects such as weld point displacement and uneven weld penetration, severely impacting the spot welding quality and product consistency of the stainless steel plates. Summary of the Invention

[0004] The purpose of this invention is to provide a spot welding sliding fixture for thick stainless steel plates used in rail transit vehicles, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A sliding fixture for spot welding thick stainless steel plates for rail transit vehicles includes: a fixture body and an electric slide table mounted on the top of the fixture body. A movable plate is mounted on the top of the electric slide table, a fixed frame is fixedly mounted on the top of the movable plate, and four centrally symmetrically distributed outer support cylinders are fixedly mounted on the top of the fixed frame. Support cylinders are slidably mounted on the inner sides of the outer support cylinders, and a fixed platform is fixedly mounted between the four support cylinders. The fixture also includes: a lifting mechanism for smoothly lifting the fixed platform, the lifting mechanism being mounted on the inner side of the support cylinders, and the lifting mechanism comprising components disposed on the inner side of the support cylinders. The system includes: an inner support cylinder, which works in conjunction with the outer support cylinder to ensure stable and vertical movement of the support cylinder; a chip removal mechanism, used to clean iron filings from the outside of the support cylinder, which is installed on the top of the outer support cylinder and includes a scraper frame fixedly installed on the top of the outer support cylinder, capable of cleaning iron filings from the outside of the support cylinder; and a mounting mechanism, used to install spot welding equipment of various sizes, which is installed on the top of the mounting platform and includes four clamping plates symmetrically arranged on the inner side of the mounting platform, capable of fixing the spot welding equipment.

[0007] The tooling body serves as the basic support component, with an electric slide table mounted on top. The sliding part of the electric slide table is fixed to the bottom of the moving plate, and a fixed frame is fixedly installed on the top of the moving plate. Four outer support cylinders are vertically fixed at the four corners of the top of the fixed frame. A support cylinder is slidably fitted inside the inner side of each outer support cylinder, and the tops of the four support cylinders are fixedly connected to a fixed platform. The lifting mechanism is located inside the support cylinder, with its inner support cylinder fixed to the top of the fixed frame and extending into the support cylinder, forming a double guide with the outer support cylinders. The scraper frame of the chip removal mechanism is fixed to the top of the outer support cylinder and closely adheres to the outer wall of the support cylinder. The four clamping plates of the fixing mechanism are symmetrically and movably installed on both sides of the top of the fixed platform. During operation, the electric slide table drives the moving plate to move horizontally, sequentially causing the fixed frame, outer support cylinders, support cylinders, and fixed platform to move horizontally; the lifting mechanism drives the support cylinders to rise and fall vertically relative to the outer and inner support cylinders; the chip removal mechanism automatically scrapes and blows away iron filings when the support cylinders descend; the fixing mechanism adjusts the clamping plates according to the dimensions of the spot welding equipment for fixation.

[0008] By setting up an inner support cylinder and an outer support cylinder to cooperate with the support cylinder to form a guide structure, the bending stiffness of the support cylinder is significantly improved. At the same time, it integrates three major functional modules: lifting, chip removal, and fixed installation, so that the tooling can not only adjust the height smoothly, but also automatically clean the moving parts and be compatible with a variety of equipment, thereby solving the problems of easy shaking after lifting, welding slag jamming, and narrow equipment adaptability of existing tooling.

[0009] In some embodiments, the lifting mechanism further includes a drive motor fixedly installed on the top of the fixed frame. The output end of the drive motor is fixedly installed with a drive gear located between the fixed frame and the movable plate. The inner support cylinder is fixedly installed on the top of the fixed frame. A first screw is rotatably installed on the inner side of the inner support cylinder. The bottom end of the first screw extends between the top of the fixed frame and the movable plate. A driven gear meshing with the drive gear is fixedly installed on the bottom end of the first screw. A movable block is threadedly fitted on the outer side of the first screw. A first optical shaft for limiting the sliding of the movable block is fixedly installed on the inner side of the inner support cylinder. A U-shaped frame that slides through the top of the inner support cylinder is fixedly installed on the top of the movable block. The top of the U-shaped frame is fixedly connected to the top of the inner wall of the support cylinder. The outer side of the support cylinder contacts the inner side of the outer support cylinder, and the inner side of the support cylinder contacts the outer side of the inner support cylinder. A telescopic rod is hinged between the outer side of the support cylinder and the top of the fixed frame.

[0010] The drive motor drives the drive gear to rotate, which in turn drives the four driven gears to rotate synchronously, thereby driving the four first screws to rotate synchronously. Since the moving block is restricted from rotating by the first optical axis, the first screws drive the moving block to move up and down axially. The moving block pushes the support cylinder to rise and fall as a whole through the U-shaped frame. During this process, the support cylinder is simultaneously constrained by the inner wall of the outer support cylinder and the outer wall of the inner support cylinder, forming a double-guided sliding pair; the telescopic rod extends and retracts with the movement of the support cylinder, providing lateral auxiliary support.

[0011] To address the technical issues of increased slenderness ratio and susceptibility to lateral swaying after the support cylinder is raised, this invention designs an inner support cylinder fixed to the top of the fixed frame and extending into the support cylinder, while an outer support cylinder is fixedly fitted onto the outside of the support cylinder. This constrains both the inner and outer sides of the support cylinder during lifting and lowering, significantly improving its bending resistance. Furthermore, a drive motor coupled with gear transmission synchronizes the lifting of four first screws, ensuring consistent movement of the four support cylinders and preventing tilting of the fixed platform. The hinged design of the telescopic rod further forms a triangular auxiliary support, effectively absorbing horizontal vibration energy.

[0012] Preferably, the chip removal mechanism further includes a U-shaped frame slidably installed inside the outer support cylinder. An elastic airbag is fixedly installed between the bottom of the U-shaped frame and the bottom inner wall of the outer support cylinder. The top of the U-shaped frame is fixedly connected to the bottom of the support cylinder. Four cavities are centrally symmetrically distributed on the inner side of the outer support cylinder. A nozzle is fixedly installed inside the cavity. Multiple exhaust pipes are fixedly installed between the four nozzles and the four elastic airbags. A one-way air inlet valve extending to the bottom of the fixed frame is fixedly installed at the bottom of the elastic airbag. Multiple exhaust holes are opened at the top of the scraper frame, and the exhaust holes are connected to the nozzles of the nozzles.

[0013] As the support cylinder rises, it moves the U-shaped frame upwards, stretching the elastic airbag and reducing its internal air pressure. Outside air enters the airbag through the one-way intake valve. When the support cylinder descends, the outer wall of the support cylinder slides relative to the inner edge of the scraper frame, causing the scraper frame to scrape off iron filings and welding slag adhering to the outer surface of the support cylinder. Simultaneously, the U-shaped frame compresses the elastic airbag downwards, forcing air from the airbag into the nozzle through the exhaust pipe and ejecting it at high speed from the exhaust port at the top of the scraper frame, blowing the scraped iron filings away from the outer wall of the support cylinder.

[0014] To address the issue of welding slag adhering to the outer wall of the support cylinder during repeated raising and lowering, causing sliding jams or scratches, this invention fixes the scraper frame to the top of the outer support cylinder. The downward stroke of the support cylinder drives the elastic airbag to generate compressed airflow, achieving a "scrape then blow" coordinated cleaning process without an external power source. The docking design between the exhaust port and the nozzle ensures precise airflow targeting the scraping area. A one-way air inlet valve ensures automatic air replenishment during the upward movement of the airbag, allowing for cyclical operation. This structure effectively prevents metal shavings accumulation and ensures smooth long-term operation of the support cylinder.

[0015] Preferably, the mounting mechanism further includes a mounting cavity formed inside the fixed platform. Two symmetrically distributed mounting plates are slidably mounted inside the mounting cavity. A second screw is rotatably mounted inside the fixed platform. The second screw is an anti-directional screw, and the two mounting plates are symmetrically threaded onto the outer side of the second screw. A second optical shaft for limiting the sliding of the mounting plates is fixedly mounted inside the mounting cavity. A slide is fixedly mounted at both ends of the mounting plate. A mounting block is slidably mounted on the outer side of the slide. Four clamping plates are respectively fixedly mounted on the outer side of the four mounting blocks. Two elongated slots for the slide to move are formed at the top of the fixed platform, and guide plates are fixedly mounted inside the two elongated slots. A first pulley is rotatably mounted on the side of the mounting block near the guide plate. A horizontal groove for limiting the sliding of the first pulley is formed on the outer side of the guide plate, and symmetrically distributed inclined grooves are formed at both ends of the horizontal groove. A spring is fixedly mounted between the mounting block and the inner side of the slide.

[0016] Rotating the handwheel drives the second screw to rotate. Since the second screw is a counter-rotating screw, the two mounting plates will move closer or further apart synchronously. When the mounting plates move inward, the carriage and mounting block move inward accordingly. The first pulley first rolls upward along the inclined groove of the guide plate, forcing the mounting block to overcome the spring force and slide upward along the carriage, thereby driving the clamping plate to rise from the long slot of the fixed platform. When the first pulley enters the horizontal slot, the mounting block stops rising. At this time, the four clamping plates are at the same height and continue to move inward with the mounting plates, thus clamping the side of the spot welding equipment. When the second screw is rotated in the opposite direction, the clamping plates first move horizontally outward to disengage from the equipment. Then the first pulley enters the inclined groove on the other side, the mounting block descends under the action of the spring, and the clamping plates retract into the long slot, keeping the top surface of the fixed platform flat.

[0017] To address the technical issues of the fixed platform only being compatible with spot welding equipment of a single size and the protruding clamping plate interfering with the placement of other equipment, this invention sets the second screw as a counter-rotating screw, achieving synchronous and symmetrical movement of the two mounting plates. Through the combination of horizontal and inclined grooves on the guide plate and the cooperation of the first pulley, the clamping plate can automatically rise and fall while horizontally clamping—rising when clamped and retracting when released. A spring provides the restoring force. This design not only allows the fixture to clamp spot welding equipment of different widths but also allows the top of the fixed platform to return to a flat surface when needed, facilitating the installation or placement of other types of working parts, greatly improving the fixture's versatility and ease of operation.

[0018] Preferably, the top of the tooling body is fixedly installed with two symmetrically distributed slide rails, and the bottom of the moving plate is fixedly installed with four symmetrically distributed sliding sleeves, with the sliding sleeves sleeved on the outside of the slide rails.

[0019] To ensure smoother horizontal movement of the moving plate driven by the electric slide table, this invention includes an auxiliary guiding mechanism consisting of a slide rail and a sliding sleeve between the moving plate and the tooling body. This structure distributes the lateral load of the electric slide table, preventing the moving plate from swaying or vibrating during long-stroke movements, thereby improving the horizontal positioning accuracy of the spot welding equipment.

[0020] Preferably, four symmetrically distributed sliding rods are fixedly installed on the outer side of the movable block, and four sliding frames are fixedly installed on the inner side of the inner support cylinder. The four sliding rods are slidably installed on the inner side of the four sliding frames respectively. Two symmetrically distributed second pulleys are rotatably installed on the end of the sliding rod away from the movable block, and the outer side of the second pulley is in contact with the outer side of the sliding frame.

[0021] When the support cylinder is subjected to a lateral force, this force is transmitted to the moving block through the U-shaped frame, causing the moving block to tend to shift laterally. At this time, the second pulley at the end of the sliding rod abuts against the side wall of the sliding frame, transmitting the lateral force to the inner support cylinder, thereby preventing the moving block from moving radially. To enhance the stability of the moving block inside the inner support cylinder, this invention features a sliding fit structure between the sliding rod and the sliding frame, and uses the second pulley to convert sliding friction into rolling friction. This ensures the axial freedom of the moving block while effectively limiting its circumferential and radial displacement, avoiding unstable climbing of the support cylinder due to the swaying of the moving block.

[0022] To address the problem of scraped iron filings clogging the vents or accumulating on the scraper frame surface, this invention designs the vents as elongated strips. The vents on the scraper frame are also designed as elongated strips, and the outer surface of the scraper frame is beveled. The elongated shape of the vents increases the airflow coverage, allowing for the simultaneous cleaning of a larger area of ​​scraped iron filings. Simultaneously, the beveled outer surface of the scraper frame allows the iron filings blown away by the airflow to slide down the bevel, preventing them from re-adhering to the support cylinder or scraper frame and improving the thoroughness of the chip removal process.

[0023] To prevent the spiral frame from tilting during vertical movement inside the outer support cylinder, this invention incorporates guide rods for auxiliary guidance. The guide rods are evenly distributed around the perimeter, ensuring the spiral frame maintains a horizontal orientation throughout its vertical movement. This allows the elastic airbag to be compressed or stretched uniformly, preventing damage due to uneven stress and ensuring the stability of the nozzle's airflow.

[0024] To facilitate operator adjustment of the clamping plate from different positions, this invention provides handwheels at both ends of the second screw. This allows the operator to directly rotate the handwheels to drive the mounting mechanism regardless of which side of the fixture they are standing on, eliminating the need to go to the other side and improving operational convenience.

[0025] To prevent scratches caused by direct contact between the rigid clamping plate and the outer shell of the spot welding equipment, and to prevent the spot welding equipment from slipping during welding vibrations, this invention adds a rubber pad to the clamping plate. The rubber material has elasticity and a high coefficient of friction, which can both buffer the clamping force and protect the equipment, and increase surface roughness through anti-slip grooves, significantly improving the stability and safety of the clamping.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The present invention, through a lifting mechanism, enables the support cylinder to move along the inner side of the outer support cylinder and the outer side of the inner support cylinder when the support cylinder pushes the fixed platform upward, thereby improving the stability of the bottom of the support cylinder. The spot welding equipment can then perform stable spot welding on stainless steel, thus achieving a stable lifting effect and ensuring the accuracy of the spot welding equipment in processing stainless steel.

[0028] 2. The present invention, through the chip removal mechanism, enables the support cylinder to move along the inner side of the scraper frame when the support cylinder is reset downward, which facilitates the scraping of welding slag on the outer side of the support cylinder. The elastic airbag blows on the outer side of the support cylinder to discharge the welding slag in time, thereby achieving the effect of cleaning welding slag, preventing welding slag accumulation, and ensuring the normal lifting and lowering of the support cylinder.

[0029] 3. The present invention, through the fixed mounting mechanism, enables four clamping plates to simultaneously approach the spot welding equipment on the fixed platform, thereby achieving clamping and fixing of the spot welding equipment. This facilitates the installation of spot welding equipment of more sizes and also allows the clamping plates to be stored in the long slot of the fixed platform, ensuring the flatness of the top of the fixed platform and facilitating the installation of more types of equipment, thus improving the convenience of equipment installation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the fixed platform and fixed frame structure in this invention;

[0032] Figure 3 This is a schematic diagram of the driving gear and driven gear structure in this invention;

[0033] Figure 4 This is a schematic diagram of the outer support cylinder and telescopic rod structure in this invention;

[0034] Figure 5 for Figure 4 Enlarged structural diagram of area A in the middle;

[0035] Figure 6 This is a schematic diagram of the inner support cylinder and U-shaped frame structure in this invention;

[0036] Figure 7 This is a schematic diagram of the mounting plate and carriage structure in this invention;

[0037] Figure 8 This is a schematic diagram of the mounting block and guide plate structure in this invention.

[0038] In the diagram: 1. Tooling body; 2. Electric slide table; 3. Moving plate; 4. Fixed frame; 5. Outer support cylinder; 6. Support cylinder; 7. Fixed platform; 8. Inner support cylinder; 9. Scraper frame; 10. Clamping plate; 11. Drive motor; 12. Drive gear; 13. First screw; 14. Driven gear; 15. Moving block; 16. U-shaped frame; 17. Telescopic rod; 18. U-shaped frame; 19. Nozzle; 20. Elastic airbag; 21. Exhaust pipe; 22. Mounting plate; 23. Second screw; 24. Slide frame; 25. Mounting block; 26. Guide plate; 27. First pulley; 28. Spring; 29. ​​Slide rail; 30. Sliding sleeve; 31. Sliding rod; 32. Sliding frame; 33. Second pulley; 34. Guide rod; 35. Handwheel; 36. Rubber pad. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0040] Example 1: Please refer to Figures 1-8 The illustrated rail transit vehicle thick stainless steel plate spot welding sliding fixture includes fixture body 1 and electric slide table 2 installed on top of fixture body 1. A movable plate 3 is installed on the top of electric slide table 2. A fixed frame 4 is fixedly installed on the top of movable plate 3. Four centrally symmetrically distributed outer support cylinders 5 are fixedly installed on the top of fixed frame 4. Support cylinders 6 are slidably installed on the inner side of outer support cylinders 5. A fixed platform 7 is fixedly installed between the four support cylinders 6. Spot welding equipment is installed through fixed platform 7. Electric slide table 2 can drive movable plate 3 to move horizontally, so that movable plate 3 drives four outer support cylinders 5 to move synchronously through fixed frame 4. Outer support cylinders 5 drive fixed platform 7 to move synchronously through support cylinders 6, so that spot welding equipment on fixed platform 7 can perform spot welding on stainless steel plate.

[0041] The lifting mechanism includes an inner support cylinder 8 disposed inside the support cylinder 6. The inner support cylinder 8 can cooperate with the outer support cylinder 5 to make the support cylinder 6 move smoothly and vertically. The lifting mechanism also includes a drive motor 11 fixedly installed on the top of the fixed frame 4. The output end of the drive motor 11 is fixedly installed with a drive gear 12 located between the fixed frame 4 and the moving plate 3. The inner support cylinder 8 is fixedly installed on the top of the fixed frame 4. A first screw 13 is rotatably installed on the inner side of the inner support cylinder 8. The bottom end of the first screw 13 extends to the top between the fixed frame 4 and the moving plate 3. A driven gear 14 that meshes with the drive gear 12 is fixedly installed on the bottom end of the first screw 13. A moving block 15 is threaded on the outer side of the first screw 13, and a first... When the optical axis is driven by the motor 11, it can drive four driven gears 14 to rotate synchronously through the drive gear 12. The driven gears 14 drive the first screw 13 to rotate, causing the first screw 13 to drive the moving block 15 to move along the outside of the first optical axis. A U-shaped frame 16 that slides through the top of the inner support cylinder 8 is fixedly installed on the top of the moving block 15. The top of the U-shaped frame 16 is fixedly connected to the top of the inner wall of the support cylinder 6. The outside of the support cylinder 6 is in contact with the inside of the outer support cylinder 5, and the inside of the support cylinder 6 is in contact with the outside of the inner support cylinder 8. The moving block 15 can push the support cylinder 6 to move upward along the outside of the outer support cylinder 5 and the inner support cylinder 8 through the U-shaped frame 16. The support cylinder 6 can then push the fixed platform 7 to move upward, realizing the height adjustment of the spot welding equipment on the fixed platform 7. A telescopic rod 17 is hinged between the outer side of the support cylinder 6 and the top of the fixed frame 4. When the support cylinder 6 moves, it can stretch the two symmetrical telescopic rods 17, so that the telescopic rods 17 and the support cylinder 6 form auxiliary support, improving the stability of the support cylinder 6 in supporting the fixed platform 7. With the cooperation of the inner support cylinder 8 and the outer support cylinder 5, the bottom of the support cylinder 6 is strengthened, ensuring the smooth spot welding of stainless steel by the spot welding equipment. Two symmetrically distributed slide rails 29 are fixedly installed on the top of the tooling body 1. Four symmetrically distributed sliding sleeves 30 are fixedly installed on the bottom of the moving plate 3, and the sliding sleeves 30 are sleeved on the outside of the slide rails 29, so that the sliding sleeves 30 cooperate with the slide rails 29 to provide support for the bottom of the moving plate 3, improving the smoothness of the movement of the moving plate 3. The outer side of the moving block 15 Four symmetrically distributed sliding rods 31 are fixedly installed. Four sliding frames 32 are fixedly installed on the inner side of the inner support cylinder 8. The four sliding rods 31 are slidably installed on the inner side of the four sliding frames 32. Two symmetrically distributed second pulleys 33 are rotatably installed on the end of the sliding rod 31 away from the moving block 15. The outer side of the second pulley 33 contacts the outer side of the sliding frame 32. The moving block 15 can drive the sliding rod 31 to move along the inner side of the sliding frame 32 and drive the second pulley 33 to move along the outer side of the sliding frame 32. When the support cylinder 6 is subjected to a large lateral pressure, the support cylinder 6 can transmit the pressure to the moving block 15 through the U-shaped frame 16. The moving block 15 can drive the second pulley 33 at the end of the sliding rod 31 to abut against the outer side of the sliding frame 32, providing auxiliary support for the moving block 15.

[0042] Example 2: Please refer to Figures 2-6 This embodiment further illustrates Example 1. The chip removal mechanism shown in the figure includes a scraper frame 9 fixedly installed on the top of the outer support cylinder 5. The scraper frame 9 can clean the iron filings on the outside of the support cylinder 6. The chip removal mechanism also includes a U-shaped frame 18 slidably installed on the inside of the outer support cylinder 5. An elastic airbag 20 is fixedly installed between the bottom of the U-shaped frame 18 and the bottom inner wall of the outer support cylinder 5. The top of the U-shaped frame 18 is fixedly connected to the bottom of the support cylinder 6. Four cavities are centrally symmetrically distributed on the inside of the outer support cylinder 5. A nozzle 19 is fixedly installed on the inside of each cavity. Multiple exhaust pipes 21 are fixedly installed between the four nozzles 19 and the four elastic airbags 20. A one-way air inlet valve extending to the bottom of the fixed frame 4 is fixedly installed at the bottom of the elastic airbag 20. Multiple exhaust holes are opened on the top of the scraper frame 9, and the exhaust holes are connected to the nozzles of the nozzles 19. When the support cylinder 6 moves upward, the elastic airbag 20 can be removed through the U-shaped frame 18. The airbag 20 is stretched, allowing it to draw in outside air through a one-way air intake valve. As the support cylinder 6 returns to its original position, it moves along the outer side of the scraper frame 9, causing the scraper frame 9 to scrape up the welding slag on the outer side of the support cylinder 6. The U-shaped frame 18 compresses the elastic airbag 20, allowing it to input air into the nozzle 19 through the exhaust pipe 21. The air is then discharged from the exhaust port through the nozzle of the nozzle 19, blowing away the welding slag scraped up by the scraper frame 9 for timely cleaning. The exhaust port of the scraper frame 9 has a long strip structure, and the outer side of the scraper frame 9 has a sloping structure to prevent welding slag from entering the exhaust port and to facilitate the discharge of welding slag downwards along the sloping surface of the scraper frame 9. Four centrally symmetrical guide rods 34 are slidably installed on the outer side of the U-shaped frame 18, and the guide rods 34 are fixedly installed on the inner side of the outer support cylinder 5 to provide guidance and support for the movement of the U-shaped frame 18 and prevent the U-shaped frame 18 from tilting.

[0043] Example 3: Please refer to Figures 2-8This embodiment further illustrates other embodiments. The mounting mechanism shown in the figure includes four clamping plates 10 symmetrically arranged inside the fixed platform 7. The four clamping plates 10 can fix the spot welding equipment. The mounting mechanism also includes a mounting cavity opened inside the fixed platform 7. Two symmetrically distributed mounting plates 22 are slidably mounted inside the mounting cavity. A second screw 23 is rotatably mounted inside the fixed platform 7. The second screw 23 is an anti-directional screw, and the two mounting plates 22 are symmetrically threaded onto the outer side of the second screw 23. A second optical shaft for limiting the sliding of the mounting plates 22 is fixedly mounted inside the mounting cavity. When the second screw 23 rotates, it can drive the two... Mounting plates 22 are positioned close to or far from each other along the outer side of the second optical axis. Sliders 24 are fixedly mounted at both ends of each mounting plate 22. Mounting blocks 25 are slidably mounted on the outer side of each slide 24. Four clamping plates 10 are fixedly mounted on the outer sides of the four mounting blocks 25. The top of the mounting platform 7 has two elongated slots for the slides 24 to move, and guide plates 26 are fixedly mounted on the inner sides of both slots. A first pulley 27 is rotatably mounted on the side of each mounting block 25 closest to the guide plate 26. A horizontal groove for the first pulley 27 to slide within a limited range is provided on the outer side of the guide plate 26, and symmetrically distributed inclined grooves are provided at both ends of the horizontal groove. The mounting blocks 25 and slides 24... A spring 28 is fixedly installed between the inner sides of the mounting plate 22. When the mounting plate 22 moves, it can drive the two slides 24 to move synchronously. The slides 24 drive the mounting block 25 to move, so that the first pulley 27 on the outer side of the mounting block 25 moves along the inclined groove on the guide plate 26. The first pulley 27 can drive the mounting block 25 to move upward along the outer side of the slide 24 and compress the spring 28, so that the mounting block 25 drives the clamping plate 10 from the long groove of the fixed platform 7 to the top of the fixed platform 7. When the first pulley 27 moves along the horizontal groove, the clamping plate 10 can clamp and fix the spot welding equipment on the fixed platform 7, which is convenient for spot welding equipment of more sizes. When the mounting plate 22 is reset, the clamping plate 10 can be retracted into the long slot, which is convenient for the staff to place other equipment and ensure the flatness of the fixed platform 7. Both ends of the second screw 23 extend to the outside of the fixed platform 7, and both ends of the second screw 23 are fixedly installed with handwheels 35. The staff can rotate and adjust the second screw 23 through the handwheels 35. A rubber pad 36 is fixedly installed on the outside of the clamping plate 10, and the outside of the rubber pad 36 is provided with anti-slip grooves. The clamping plate 10 can clamp and fix the spot welding equipment through the rubber pad 36, providing protection for the spot welding equipment and also increasing the friction between the clamping plate 10 and the spot welding equipment.

[0044] Working principle: First, the operator places the spot welding equipment on the fixed platform 7 and rotates the second screw 23 by handwheel 35. The second screw 23 drives the two mounting plates 22 to move closer to each other along the outer side of the second optical axis. The mounting plates 22 drive the two slides 24 to move synchronously, causing the slides 24 to drive the mounting block 25 to move synchronously. The mounting block 25 drives the first pulley 27 to move along the inner side of the inclined groove on the guide plate 26, causing the first pulley 27 to drive the mounting block 25 to move upward along the outer side of the slide 24, compressing the spring 28, causing the mounting block 25 to drive the clamping plate 10. The device moves from the long slot of the fixed platform 7 to above the fixed platform 7. At this time, the first pulley 27 enters the horizontal slot from the inclined slot, causing the first pulley 27 to move along the horizontal slot. The four clamping plates 10 can then synchronously approach the outside of the spot welding equipment to clamp and fix the spot welding equipment. Then, the operator starts the drive motor 11. The drive motor 11 drives the four driven gears 14 to rotate synchronously through the drive gear 12. The driven gears 14 drive the first screw 13 to rotate, causing the first screw 13 to drive the moving block 15 to move along the outside of the first optical axis. The moving block 15 is connected to the U-shaped frame 1. 6. Pushing the support cylinder 6 upward along the outer side of the outer support cylinder 5 and the inner support cylinder 8, the four support cylinders 6 can simultaneously push the fixed platform 7 upward, realizing the height adjustment of the spot welding equipment. Furthermore, during the movement, the support cylinder 6 can stretch the two symmetrical telescopic rods 17, ensuring that the telescopic rods 17 provide auxiliary support to the support cylinder 6. With the cooperation of the inner support cylinder 8 and the outer support cylinder 5, the spot welding equipment can smoothly spot weld stainless steel. Simultaneously, the electric slide table 2 drives the moving plate 3 to move horizontally, causing the moving plate 3 to drive the four outer support cylinders 5 simultaneously through the fixed frame 4. In the step movement, the outer support cylinder 5 drives the fixed platform 7 to move synchronously through the support cylinder 6, thereby adjusting the position of the spot welding equipment. When the support cylinder 6 returns to its original position, it moves along the outer side of the scraper frame 9, causing the scraper frame 9 to scrape up the welding slag on the outer side of the support cylinder 6. At the same time, the support cylinder 6 drives the loop frame 18 to move synchronously, causing the loop frame 18 to compress the elastic air bag 20. The elastic air bag 20 inputs air into the nozzle 19 through the exhaust pipe 21. The air is discharged from the exhaust hole through the nozzle of the nozzle 19, blowing on the welding slag scraped up by the scraper frame 9, thereby achieving timely treatment of the welding slag.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] 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 rail transit vehicle thick stainless steel plate spot welding slip tool, characterized in that, include: The tooling body (1) and the electric slide (2) installed on the top of the tooling body (1) are provided. A movable plate (3) is installed on the top of the electric slide (2). A fixed frame (4) is installed on the top of the movable plate (3). Four external support cylinders (5) are installed on the top of the fixed frame (4). A support cylinder (6) is slidably installed on the inner side of the external support cylinder (5). A fixed platform (7) is installed between the four support cylinders (6). Also includes: A lifting mechanism is used to smoothly lift the fixed platform (7). The lifting mechanism is installed on the inner side of the support cylinder (6). The lifting mechanism includes an inner support cylinder (8) disposed on the inner side of the support cylinder (6). The inner support cylinder (8) can cooperate with the outer support cylinder (5) to make the support cylinder (6) move smoothly and vertically. A chip removal mechanism is used to clean the iron filings on the outside of the support cylinder (6). The chip removal mechanism is installed on the top of the outer support cylinder (5). The chip removal mechanism includes a scraper frame (9) fixedly installed on the top of the outer support cylinder (5). The scraper frame (9) can clean the iron filings on the outside of the support cylinder (6). The mounting mechanism is used to install spot welding equipment of various sizes. The mounting mechanism is installed on the top of the fixed platform (7). The mounting mechanism includes four clamps (10) symmetrically arranged inside the fixed platform (7). The four clamps (10) can fix the spot welding equipment.

2. The rail transit vehicle thick stainless steel sheet spot welding slip tooling according to claim 1, characterized in that: The lifting mechanism also includes a drive motor (11) installed on the top of the fixed frame (4). A drive gear (12) is fixedly installed at the output end of the drive motor (11). The inner support cylinder (8) is fixedly installed on the top of the fixed frame (4). A first screw (13) is rotatably installed on the inner side of the inner support cylinder (8). A driven gear (14) that meshes with the drive gear (12) is fixedly installed at the bottom end of the first screw (13). A moving block (15) is threaded on the outer side of the first screw (13). The inner support cylinder (8) The inner side is equipped with a first optical axis for limiting the sliding of the movable block (15). The top of the movable block (15) is equipped with a U-shaped frame (16) that slides through the top of the inner support cylinder (8). The top of the U-shaped frame (16) is fixedly connected to the top of the inner wall of the support cylinder (6). The outer side of the support cylinder (6) is in contact with the inner side of the outer support cylinder (5), and the inner side of the support cylinder (6) is in contact with the outer side of the inner support cylinder (8). A telescopic rod (17) is hinged between the outer side of the support cylinder (6) and the top of the fixed frame (4).

3. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 2, characterized in that: The chip removal mechanism also includes a U-shaped frame (18) slidably installed inside the outer support cylinder (5). An elastic airbag (20) is installed between the bottom of the U-shaped frame (18) and the bottom inner wall of the outer support cylinder (5). The top of the U-shaped frame (18) is fixedly connected to the bottom of the support cylinder (6). The outer support cylinder (5) has four cavities on its inner side, and a nozzle (19) is installed inside the cavity. Multiple exhaust pipes (21) are installed between the four nozzles (19) and the four elastic airbags (20). A one-way air inlet valve extending to the bottom of the fixed frame (4) is fixedly installed at the bottom of the elastic airbag (20). Multiple exhaust holes are opened at the top of the scraper frame (9), and the exhaust holes are connected to the nozzles of the nozzles (19).

4. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 3, characterized in that: The mounting mechanism further includes a mounting cavity opened inside the fixed platform (7). Two mounting plates (22) are slidably mounted inside the mounting cavity. A second screw (23) is rotatably mounted inside the fixed platform (7). The second screw (23) is an anti-directional screw, and the two mounting plates (22) are symmetrically threaded onto the outer side of the second screw (23). A second optical axis for limiting the sliding of the mounting plates (22) is installed inside the mounting cavity. A slide (24) is installed at both ends of the mounting plates (22). The outer side of the slide (24) slides. Mounting blocks (25) are installed, and four clamping plates (10) are respectively installed on the outside of the four mounting blocks (25). The top of the fixed platform (7) has two long slots, and guide plates (26) are installed on the inner side of the two long slots. A first pulley (27) is rotatably installed on one side of the mounting block (25). A horizontal slot for limiting the sliding of the first pulley (27) is opened on the outer side of the guide plate (26), and inclined slots are opened at both ends of the horizontal slot. A spring (28) is installed between the mounting block (25) and the inner side of the slide (24).

5. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 1, characterized in that: The tool body (1) has two slide rails (29) installed on its top, and the movable plate (3) has four sliding sleeves (30) installed on its bottom, with the sliding sleeves (30) fitted on the outside of the slide rails (29).

6. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 2, characterized in that: Four sliding rods (31) are installed on the outside of the movable block (15), and four sliding frames (32) are installed on the inside of the inner support cylinder (8). The four sliding rods (31) are slidably installed on the inside of the four sliding frames (32). Two second pulleys (33) are rotatably installed at one end of the sliding rod (31), and the outside of the second pulleys (33) is in contact with the outside of the sliding frame (32).

7. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 3, characterized in that: The exhaust hole of the scraper frame (9) is a long strip structure, and the outer side of the scraper frame (9) is a sloping structure.

8. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 3, characterized in that: Four guide rods (34) are slidably installed on the outer side of the spiral frame (18), and the guide rods (34) are installed on the inner side of the outer support cylinder (5).

9. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 4, characterized in that: Handwheels (35) are installed at both ends of the second screw (23).

10. The spot welding sliding fixture for thick stainless steel plates in rail transit vehicles according to claim 4, characterized in that: A rubber pad (36) is installed on the outside of the clamp (10), and an anti-slip groove is provided on the outside of the rubber pad (36).

Images