A smart welding equipment and welding method for high-strength racks with large wall thickness

Abstract

This invention discloses an intelligent welding device and method for high-strength, thick-walled racks, belonging to the field of plasma arc welding machines. The intelligent welding device and method for high-strength, thick-walled racks includes a base, with a welding cavity located at the middle of the upper end of the base. Two opposing welding torches are respectively arranged at the upper and lower ends of one side of the welding cavity. This invention solves the problem that in actual use of plasma arc welding machines, it is inconvenient to pre-fit two welding materials at the desired welding position. This invention uses a first, second, third, and fourth measuring scale to measure the thickness at the clamping position after clamping. The connection position of the clamped items can be displayed on a scale. When adjusting the welding position, height adjustments can also be directly displayed using the first, second, third, and fourth measuring scales, facilitating user adjustment and welding.

Description

Technical Field

[0001] This invention relates to the field of plasma arc welding machines, specifically to an intelligent welding equipment and welding method for high-strength racks with large wall thickness. Background Technology

[0002] The intelligent welding equipment for thick-walled, high-strength gear racks is a device that uses plasma arc welding technology and is specifically designed for welding thick-walled and high-strength gear racks. This equipment achieves efficient and precise welding through a high-energy-density plasma arc, ensuring the strength and durability of the weld. It is suitable for welding gear racks in heavy machinery, ships, and bridges, meeting the welding requirements of high-strength gear racks.

[0003] Chinese Patent CN115194305B discloses a plasma arc welding machine, including a support plate. A first adjustment device is installed on the upper surface of the support plate, and a plasma arc welding device is installed in the middle of the upper surface of the support plate. A first clamping device is set in the middle of the first adjustment device, and a synchronization device is installed on the upper surface of the worktable. After the welding torch is self-centered and clamped by the first clamping device, the height of the first clamping device can be quantitatively adjusted on the first adjustment device, thereby realizing quantitative adjustment of the height of the welding torch. If the height of the workpieces to be welded is not on the same plane, the welding torch and the workpieces to be welded are avoided by adjusting the height of the welding torch. At the same time, the welding torch can be stabilized during the height adjustment process to avoid deviation during welding.

[0004] In actual use, when the two materials to be welded have different thicknesses, the plasma arc welding machine of the above patent cannot stably fix the two materials to be welded, making it inconvenient to pre-fit the two materials to the required welding position, thus affecting the welding effect. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent welding device and method for high-strength racks with large wall thickness. The device measures the thickness at the clamping position using a first, second, third, and fourth measuring scale. The connection position of the clamped item can be displayed on a scale. When adjusting the welding position, the height of the clamped item can be adjusted by activating a first hydraulic telescopic rod. The height adjustment can also be directly displayed using the first, second, third, and fourth measuring scales, facilitating user adjustment and welding, and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-strength rack and pinion intelligent welding device, comprising a base, a welding cavity disposed at the middle position of the upper end of the base, two opposing welding torches disposed at the upper and lower ends of one side of the welding cavity, the welding torches using a plasma arc as the welding heat source, and constraining the arc through a specially designed nozzle to obtain a high-energy-density plasma arc for high-temperature welding, a first bracket with a first pressing plate inside disposed on one side of the upper end of the base, a second bracket with a second pressing plate inside disposed on the other side of the upper end of the base, a first marking ruler disposed at the front end of the first pressing plate, a second marking ruler disposed at the front end of the first bracket, and a scale disposed on the side of the welding cavity facing the first marking ruler. The clamped object can be measured by the markings of the first and second marking rulers, and the position of the clamped object can also be intuitively understood by the first and second marking rulers.

[0007] Preferably, the width of the first bracket and the first pressing plate is smaller than the width of the second bracket and the second pressing plate. The front end of the second bracket is provided with a fourth marking ruler, and the front end of the second pressing plate is provided with a third marking ruler. The width of the thick-walled rack held by the first bracket and the first pressing plate is relatively low, so a large clamping area is not required, which reduces the overall footprint of the device and the overall cost of the equipment. The thickness of the item held by the second bracket and the second pressing plate can be intuitively understood through the fourth marking ruler and the third marking ruler.

[0008] Preferably, the distance between the first and second marking rulers is equal to the thickness of the item held between the first pressing plate and the first bracket, and the distance between the third and fourth marking rulers is equal to the thickness of the item held between the lower end of the second pressing plate and the upper end of the second bracket. The thickness of the large-wall-thickness toothed rack can be intuitively understood by the distance between the first and second marking rulers, while the thickness of the material welded to the large-wall-thickness toothed rack can be measured by the third and fourth marking rulers.

[0009] Preferably, the lower ends of the first and second supports are provided with a first hydraulic telescopic rod, which can be pushed by the first hydraulic telescopic rod. The pushing of the first hydraulic telescopic rod can also be marked on the scale surface by the first, second, third and fourth marking rulers.

[0010] Preferably, the first, second, third, and fourth marking rulers all extend to the front end of the scale. By marking the scale surface with the extended first, second, third, and fourth marking rulers, the user can be provided with a reference for adjusting the welding position.

[0011] Preferably, each of the two first hydraulic telescopic rods has a sliding block fixedly installed on the side of the lower end facing the base. The upper part of the base is provided with sliding rails on both sides, and the sliding block is embedded in the sliding rail and slidably connected to the inside of the sliding rail. A second hydraulic telescopic rod is provided at the middle position of the lower end of the sliding block. The sliding block can make the workpiece to be welded move continuously toward the welding gun by sliding along the sliding rail. The second hydraulic telescopic rod can push it at a uniform speed and stably.

[0012] Preferably, the lower end of the welding torch is provided with a plasma arc emission chamber, and a heat dissipation chamber is arranged around the plasma arc emission chamber. A partition plate is provided on one side of the heat dissipation chamber, and an input pipe surrounding the outside of the heat dissipation chamber is provided on one side of the partition plate. An output pipe surrounding the outside of the heat dissipation chamber is provided on the other side of the partition plate. The heat dissipation chamber is cooled around the plasma arc emission chamber, and heat can be directly absorbed from the high-temperature position.

[0013] Preferably, the input pipe is sealed to the interior of the heat dissipation cavity via a first diverter pipe, and the output pipe is sealed to the interior of the heat dissipation cavity via a second diverter pipe. Five of the first and second diverter pipes are evenly distributed around the perimeter. The side of the first diverter pipe faces the flow path inside the input pipe, and the side of the second diverter pipe faces the flow path inside the output pipe. The input and output of liquid can be realized by reserving and connecting the second and first diverter pipes.

[0014] Preferably, a touch screen consisting of a data input module, a speed control module, and a welding position adjustment module is provided on one side of the front end of the base, wherein:

[0015] Data entry module: Receives the material thickness values ​​on both sides of the welding position input by the operator through the touch screen interface. The thickness values ​​are obtained by the spacing between the first, second, third, and fourth marking rulers and the scale table.

[0016] Speed ​​control module: By comparing the data input from the data entry module with the preset data, the speed corresponding to the current data is determined. The speed value calculated by the speed calculation module is converted into the pushing command of the second hydraulic telescopic rod, and the speed is gradually controlled at the beginning and end of the weld.

[0017] Welding position adjustment module: By independently controlling the two first hydraulic telescopic rods on both sides, the two materials clamped and fixed can be adjusted independently.

[0018] The welding method of the intelligent welding equipment for thick-walled, high-strength gear racks includes the following steps:

[0019] Step 1: Place the thick-walled toothed rack to be welded between the first pressing plate and the first bracket, and place the material to be welded to the thick-walled toothed rack between the second pressing plate and the second bracket;

[0020] Step 2: The output shaft of the motor drives the threaded rod to rotate, and the second pressing plate and the first pressing plate change from rotational motion to longitudinal linear motion, thereby achieving clamping and fixing of the thick-walled rack and the connection position of the thick-walled rack.

[0021] Step 3: The thickness of the large-wall-thickness rack can be determined by the distance between the first and second marking rulers, while the thickness of the welding position of the large-wall-thickness rack can be determined by the distance between the third and fourth marking rulers.

[0022] Step 4: Activate the first hydraulic telescopic rod. The first, second, third, and fourth scales will slide synchronously on the outer wall of the scale. The user can refer to the scale to know the position of the welding material.

[0023] Step 5: The second hydraulic telescopic rod will push the corresponding sliding blocks at the lower ends of the first and second supports to slide. The sliding blocks slide in the sliding rail and push the two items to be clamped laterally at a uniform speed.

[0024] Step 6: The two items to be clamped come into contact with the welding position of the welding gun at a uniform speed, and the welding is completed by the high temperature emitted by the welding gun.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] When the first bracket and the first pressing plate of this invention clamp the thick-walled toothed rack, they can drive the first and second marking rulers to move, and the thickness can be directly determined by the scale. At the same time, when the second bracket and the second pressing plate clamp the material at the welding position of the thick-walled toothed rack, the thickness can be directly determined by the movement of the third and fourth marking rulers and the scale. On the other hand, the current welding position and the fixed position of the thick-walled toothed rack after welding can be determined by the markings on the scale and the positions of the first, second, third, and fourth marking rulers. Similarly, when the first hydraulic telescopic rod extends and retracts to adjust the height of the clamped item, the scale can be used as a reference to achieve precise adjustment of the welding position and the horizontal height of the item being welded, thereby improving the subsequent welding effect and making it suitable for repeated welding. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0028] Figure 2 This is a top view showing the positional relationship of the welding cavity in this invention;

[0029] Figure 3This is a schematic diagram showing the positional relationship of the scale in this invention;

[0030] Figure 4 This is a schematic diagram of the pushing trajectory of the second hydraulic telescopic rod of the present invention;

[0031] Figure 5 This is a cross-sectional view showing the positional relationship of the second hydraulic telescopic rod of the present invention;

[0032] Figure 6 This is a schematic diagram of the intelligent welding system of the present invention;

[0033] Figure 7 This is a cross-sectional view of the internal structure of the welding torch of the present invention;

[0034] Figure 8 This is a cross-sectional view of the liquid flow trajectory inside the mounting cavity of the present invention;

[0035] Figure 9 This is a cross-sectional view of the second shunt pipe connection structure of the present invention;

[0036] Figure 10 This is a cross-sectional view of the first shunt pipe connection structure of the present invention.

[0037] In the diagram: 1. Base; 2. Chassis; 3. Welding torch; 4. Touch screen; 5. First bracket; 6. First pressing plate; 7. First hydraulic telescopic rod; 8. Second bracket; 9. Second pressing plate; 10. Threaded rod; 11. Motor; 12. Light shield; 13. Second hydraulic telescopic rod; 14. Sliding rail; 15. First marking ruler; 16. Second marking ruler; 17. Third marking ruler; 18. Fourth marking ruler; 19. Welding cavity; 20. Scale; 21. Sliding block; 22. Mounting cavity; 23. Input pipe; 24. Output pipe; 25. First diverter pipe; 26. Heat dissipation cavity; 27. Divider plate; 28. Second diverter pipe; 29. ​​Plasma arc emission cavity. Detailed Implementation

[0038] The present invention will be further described below with reference to specific embodiments.

[0039] Example 1: As Figure 1 and Figure 4 As shown, this embodiment of a high-strength rack and pinion intelligent welding device includes a base 1. A first support 5 is provided on one side of the upper end of the base 1. A first pressing piece 6 is provided inside the first support 5. The first pressing piece 6 can slide inside the first support 5 to clamp the workpiece to be welded. A second support 8 is provided on the other side of the upper end of the base 1. A second pressing piece 9 is provided inside the second support 8. The workpiece to be welded can also be clamped by sliding the second pressing piece 9 inside the second support 8.

[0040] The first pressing plate 6 slides within the first bracket 5, and the second pressing plate 9 slides within the second bracket 8, respectively fixing the two materials to be welded. By fixing them separately, the welding positions are made to fit together. The width of the first bracket 5 and the first pressing plate 6 is smaller than the width of the second bracket 8 and the second pressing plate 9. The narrower first bracket 5 and the first pressing plate 6 are used to clamp the thick-walled toothed rack, while the wider second bracket 8 and the second pressing plate 9 can press and fix the materials to be welded to the thick-walled toothed rack. The size of the clamping position is designed for the clamped items to avoid increasing the overall footprint of the equipment and the cost of the equipment.

[0041] The first pressing plate 6 and the second bracket 8 are both provided with threaded rods 10 for transmission. The outer part of one threaded rod 10 is threadedly engaged with the middle position of the first pressing plate 6. The threaded rod 10 passing through the first pressing plate 6 is rotatably connected to the first bracket 5. The outer part of the other threaded rod 10 is threadedly engaged with the second bracket 8. The upper and lower ends of the threaded rod 10 inside the second bracket 8 are rotatably connected to the outer wall of the second pressing plate 9. The two threaded rods 10 can drive the first pressing plate 6 and the second pressing plate 9 to press down and fix the material to be welded.

[0042] In addition, in order to stably drive the threaded rod 10, motors 11 are provided at both the upper and lower ends of the threaded rod 10. The two motors 11 are respectively fixed to the upper ends of the first bracket 5 and the second pressing plate 9 by bolts. The motors 11 stably output the threaded rod 10 and complete the clamping action required for welding.

[0043] The different installation positions of the two threaded rods 10 can be used to clamp items of different sizes. The threaded rod 10 directly passes through the first pressing plate 6 to fix the strip-shaped thick-walled rack, while the threaded rod 10 does not pass through the second pressing plate 9. Instead, it passes through the second bracket 8 to push the second pressing plate 9, which allows the second pressing plate 9 and the second bracket 8 to stably clamp larger items.

[0044] To understand the relative positional relationship between the items held by the first support 5 and the first pressing plate 6 and the items held by the second pressing plate 9 and the second support 8, and to facilitate the adjustment of the two clamping positions, a first marking ruler 15 is provided extending from the front end of the first pressing plate 6; a second marking ruler 16 is provided extending from the front end of the first support 5 where the material to be welded is placed; a fourth marking ruler 18 is provided extending from the front end of the second support 8 where the material to be welded is placed; and a third marking ruler 17 is provided extending from the front end of the second pressing plate 9 facing the side of the second support 8 where the material to be welded is placed. The extended first marking ruler 15, second marking ruler 16, third marking ruler 17 and fourth marking ruler 18 can avoid the user measuring the fixed items of the two welding materials from multiple angles, and can also directly understand the thickness of the material to be welded.

[0045] The distance between the first marking ruler 15 and the second marking ruler 16 is equal to the thickness of the item held between the first pressing plate 6 and the first bracket 5, and the distance between the third marking ruler 17 and the fourth marking ruler 18 is equal to the thickness of the item held between the lower end of the second pressing plate 9 and the upper end of the second bracket 8.

[0046] In order to adjust the welding position and the horizontal height of the two clamped items, a first hydraulic telescopic rod 7 is provided at the middle position of the lower end of the first bracket 5 and the second bracket 8. The horizontal height of the first bracket 5 and the first pressing plate 6 and the two clamping positions of the second bracket 8 and the second pressing plate 9 can be adjusted by driving the first hydraulic telescopic rod 7 respectively.

[0047] To clearly understand the subsequent welding position and adjustment examples, a welding cavity 19 is provided at the middle of the upper end of the base 1. A scale 20 is provided on the side of the welding cavity 19 facing the first marking ruler 15. The first marking ruler 15, the second marking ruler 16, the third marking ruler 17, and the fourth marking ruler 18 all extend to the front end of the scale 20. Through the scale 20, the user can intuitively understand the thickness of the items clamped on both sides and the position of the items after horizontal adjustment, improving the efficiency of position adjustment before welding.

[0048] Among them, the lower ends of the two first hydraulic telescopic rods 7 facing the base 1 are each fixedly provided with a sliding block 21. The upper ends of the base 1 are provided with sliding rails 14 on both sides. The sliding block 21 is embedded in the sliding rail 14 and is slidably connected to the inside of the sliding rail 14. After clamping two welding materials, the two sliding blocks 21 respectively drag the clamped materials at the upper end and slide along the sliding rail 14 to complete the material pushing. This makes the welding position continuously and uniformly contact the welding torch 3 used for welding. The welding torch 3 uses a plasma arc as the welding heat source and constrains the arc through a specially designed nozzle to obtain a high-energy-density plasma arc for high-temperature welding.

[0049] like Figure 2 As shown, a second hydraulic telescopic rod 13 is provided at the middle position on one side of the lower end of the sliding block 21. By extending the second hydraulic telescopic rod 13, the lateral position of the clamped item can be pushed and adjusted to achieve uniform and stable contact with the welding torch 3 and complete the welding.

[0050] In addition, the outer wall of the scale 20 is welded and fixed to the sliding block 21 corresponding to the lower end of the first bracket 5. During the horizontal sliding of the sliding block 21, the scale 20 will slide along with it and continuously display the horizontal position of the item to be welded.

[0051] A pair of housings 2 are longitudinally arranged at the lower end of the base 1. Two opposing welding guns 3 are respectively arranged at the upper and lower ends of one side of the welding cavity 19. The welding guns 3 can achieve simultaneous welding of the upper and lower surfaces of the welding material, which improves the welding effect when dealing with thicker welding positions.

[0052] To improve welding results, such as Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, a touch screen 4 is provided on one side of the front end of the base 1. The touch screen 4 has a built-in intelligent welding system, which includes a data input module, a speed control module, and a welding position adjustment module. The data input module receives the material thickness values ​​on both sides of the welding position input by the operator through the touch screen interface. The thickness values ​​are obtained by matching the spacing between the first marking ruler 15, the second marking ruler 16, the third marking ruler 17, and the fourth marking ruler 18 with the scale 20. The graphical interface of the touch screen simplifies the parameter input process and lowers the operation threshold.

[0053] Speed ​​control module: By comparing the data input by the data entry module with the preset data, the speed corresponding to the current data is known. It is used to convert the speed value calculated by the speed calculation module into the pushing command of the second hydraulic telescopic rod 13. It implements speed gradual control at the start and end of the weld to improve the welding effect. Implementing speed gradual control at the start and end of the weld can avoid sudden start-up, which would cause the welding material to shift position and slip due to gravity.

[0054] Welding position adjustment module: Through the independent control of the two first hydraulic telescopic rods 7 on both sides, the two materials clamped and fixed can be adjusted independently by adjusting the two first hydraulic telescopic rods 7. The adjustment status can be intuitively understood by the spacing between the first marking ruler 15, the second marking ruler 16, the third marking ruler 17 and the fourth marking ruler 18 in conjunction with the scale 20.

[0055] In order to cool down the location where the plasma arc is generated inside the welding torch 3, so that the welding torch 3 can perform welding work efficiently for a long time, such as... Figure 7 , Figure 8 , Figure 9 and Figure 10 The lower end of the welding torch 3 is provided with a plasma arc emission chamber 29, and a heat dissipation chamber 26 is arranged around the plasma arc emission chamber 29. The high temperature generated when the plasma arc is emitted will be transferred to the heat dissipation chamber 26, and the heat can be directly dissipated through the heat dissipation chamber 26.

[0056] Among them, a partition plate 27 is provided on one side of the heat dissipation cavity 26. Through the partition plate 27, the liquid used for heat dissipation can be transferred in the heat dissipation cavity 26. It is transported from one side of the partition plate 27 to the inside of the heat dissipation cavity 26, while the liquid that has absorbed heat is discharged from the other side of the partition plate 27 to the outside of the heat dissipation cavity 26.

[0057] In addition, in order to transfer the liquid, an input pipe 23 is provided on one side of the partition plate 27 to surround the outside of the heat dissipation cavity 26, and an output pipe 24 is provided on the other side of the partition plate 27 to surround the outside of the heat dissipation cavity 26. The heat dissipation liquid enters through the input pipe 23, and the liquid is discharged to the outside of the welding torch 3 through the output pipe 24.

[0058] To ensure that the liquid inside the input pipe 23 can be evenly transferred to the heat dissipation cavity 26, the input pipe 23 is sealed to the heat dissipation cavity 26 through the first branch pipe 25, and the output pipe 24 is sealed to the heat dissipation cavity 26 through the second branch pipe 28. Five of the first branch pipe 25 and the second branch pipe 28 are evenly distributed around the cavity. The five evenly distributed second branch pipes 28 can quickly drain the liquid that has absorbed heat in different areas of the heat dissipation cavity 26, preventing the liquid that has absorbed heat from continuously flowing in the heat dissipation cavity 26. The five evenly distributed first branch pipes 25 can evenly transfer the low-temperature liquid used for heat dissipation to different areas of the heat dissipation cavity 26, preventing the heat dissipation position at the rear from having difficulty contacting the low-temperature liquid, so that the temperature can be reduced evenly and comprehensively.

[0059] The side of the first diversion pipe 25 facing the internal flow path of the input pipe 23. By tilting the first diversion pipe 25, the liquid inside the input pipe 23 can be discharged more conveniently, and the liquid discharged from the other first diversion pipes 25 will be prevented from actively flowing into other first diversion pipes 25 due to the liquid flow, thus avoiding the liquid flow path being unsmooth.

[0060] The side of the second diversion pipe 28 facing the internal flow trajectory of the output pipe 24 is inclined so that the liquid sent into the heat dissipation cavity 26 by the input pipe 23 can directly flow into the second diversion pipe 28 during the transmission process and actively discharge the liquid that has absorbed heat in the output pipe 24. This facilitates the stable and rapid discharge of the heat-absorbing liquid. As the liquid flows into the heat dissipation cavity 26 and surrounds the heat dissipation cavity 26, it enters from the position of the first diversion pipe 25 and is discharged from the position of the second diversion pipe 28 after absorbing heat.

[0061] The output pipe 24 and the input pipe 23 are respectively connected to the corresponding pumps, which can complete the liquid delivery and the temperature reduction of the welding torch 3.

[0062] Example 2: In order to avoid the strong light during welding affecting the environment where the equipment is placed, a light shield 12 is provided around the upper part of the outside of the welding cavity 19, and the light shield 12 is fixedly connected to the base 1 by bolts. The material of the light shield 12 is a plastic welding light shield. The light shield 12 can prevent the strong light generated during the welding process from damaging the surrounding staff.

[0063] Working Principle: When welding with the intelligent welding equipment for thick-walled, high-strength gear racks, the gear rack to be welded is placed between the first pressing plate 6 and the first support 5. The material to be welded to the thick-walled gear rack is placed between the second pressing plate 9 and the second support 8. The motor 11 corresponding to the upper end of the threaded rod 10 is started. The output shaft of the motor 11 drives the threaded rod 10 to rotate. The rotation of the threaded rod 10 generates relative motion with the first pressing plate 6 and the second support 8. Through the restriction of the first pressing plate 6 by the first support 5 and the restriction of the second pressing plate 9 by the second support 8, the rotational motion of the second pressing plate 9 and the first pressing plate 6 is transformed into longitudinal linear motion, realizing the clamping and fixing of the thick-walled gear rack and the connection position of the thick-walled gear rack. The longitudinal movement of the first pressing plate 6 will cause the first marking ruler 15 to slide at the front end of the scale 20. The longitudinal movement of the second pressing plate 9 will cause the third marking ruler 17 to slide at the front end of the scale 20. The user can use the space between the first marking ruler 15 and the second marking ruler 16 to achieve the desired effect. The spacing between the scales indicates the thickness of the large-walled toothed rack, while the spacing between the third scale 17 and the fourth scale 18 indicates the thickness of the welding position of the large-walled toothed rack. Activating the first hydraulic telescopic rod 7 can adjust the horizontal position of the first bracket 5 and the second bracket 8 respectively. When adjusting the horizontal position, the first scale 15, the second scale 16, the third scale 17 and the fourth scale 18 will slide synchronously on the outer wall of the scale 20. The user can refer to the scale 20 to know the position of the welding material. Activating the second hydraulic telescopic rod 13 will push the corresponding sliding block 21 at the lower end of the first bracket 5 and the second bracket 8 to slide. The sliding block 21 slides in the sliding rail 14 and pushes the two objects to be clamped at a uniform speed laterally. The two objects to be clamped contact the welding position of the welding gun 3 at a uniform speed. Using the plasma arc as the welding heat source, the arc is constrained by a specially designed nozzle to obtain a high-energy-density plasma arc for high-temperature welding. The welding is completed by contacting the welding gun 3 to emit high temperature.

[0064] 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.

[0065] 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.

Claims

1. A high-strength rack and pinion intelligent welding equipment, comprising a base (1), wherein a welding cavity (19) is provided at the middle position of the upper end of the base (1), characterized in that, Two opposing welding torches (3) are respectively provided at the upper and lower ends of one side of the welding cavity (19). The welding torches (3) use plasma arc as the welding heat source and constrain the arc through the nozzle to obtain a high-energy-density plasma arc for high-temperature welding. A first bracket (5) with a first pressing plate (6) inside is provided on one side of the upper end of the base (1), and a second bracket (8) with a second pressing plate (9) inside is provided on the other side of the upper end of the base (1). A first marking ruler (15) is provided at the front end of the first pressing plate (6). The first support (5) has a second marking ruler (16) at its front end. The width of the first support (5) and the first pressing plate (6) is smaller than the width of the second support (8) and the second pressing plate (9). The second support (8) has a fourth marking ruler (18) at its front end. The second pressing plate (9) has a third marking ruler (17) at its front end. The distance between the first marking ruler (15) and the second marking ruler (16) is equal to the thickness of the item held between the first pressing plate (6) and the first support (5). The first pressing plate (6) and the second support (5) have a second marking ruler (16) at their front ends. The interior of each frame (8) is equipped with a threaded rod 10 for transmission. A motor 11 is installed at both the upper and lower ends of the threaded rod 10. The distance between the third and fourth marking rulers (17 and 18) is equal to the thickness of the item held between the lower end of the second pressing plate (9) and the upper end of the second support (8). A first hydraulic telescopic rod (7) is installed at the lower end of both the first and second supports (8). A scale (20) is installed on the side of the welding cavity (19) facing the first marking ruler (15). The first marking ruler (15), the fourth marking ruler (18), and the fifth marking ruler (19) are all equipped with a motor 11 at both ends of the first and second supports (8). The second measuring scale (16), the third measuring scale (17) and the fourth measuring scale (18) all extend to the front end of the scale (20). The two first hydraulic telescopic rods (7) are fixedly provided with sliding blocks (21) on the side of the base (1) facing the base. The upper sides of the base (1) are provided with sliding rails (14), and the sliding blocks (21) are embedded in the sliding rails (14) and slidably connected to the inside of the sliding rails (14). The middle position of the lower side of the sliding block (21) is provided with a second hydraulic telescopic rod (13).

2. The intelligent welding equipment for high-strength racks with large wall thickness according to claim 1, characterized in that, The lower end of the welding torch (3) is provided with a plasma arc emission chamber (29), and a heat dissipation chamber (26) is arranged around the plasma arc emission chamber (29). A partition plate (27) is provided on one side of the heat dissipation chamber (26), and an input pipe (23) is provided on one side of the partition plate (27) surrounding the outside of the heat dissipation chamber (26). An output pipe (24) is provided on the other side of the partition plate (27) surrounding the outside of the heat dissipation chamber (26).

3. The intelligent welding equipment for high-strength racks with large wall thickness according to claim 2, characterized in that, The input pipe (23) is sealed to the interior of the heat dissipation cavity (26) through the first shunt pipe (25), and the output pipe (24) is sealed to the interior of the heat dissipation cavity (26) through the second shunt pipe (28). Five of the first shunt pipe (25) and the second shunt pipe (28) are evenly distributed around the input pipe (23). The first shunt pipe (25) faces the direction of the flow trajectory inside the input pipe (23), and the second shunt pipe (28) faces the side of the flow trajectory inside the output pipe (24).

4. The intelligent welding equipment for high-strength racks with large wall thickness according to claim 3, characterized in that, A touch screen (4) consisting of a data input module, a speed control module, and a welding position adjustment module is provided on one side of the front end of the base (1), wherein: The data entry module receives the material thickness values ​​on both sides of the welding position input by the operator through the touch screen interactive interface. The thickness values ​​are obtained by matching the spacing between the first marking ruler (15), the second marking ruler (16), the third marking ruler (17) and the fourth marking ruler (18) with the scale table (20). The speed control module compares the data input by the data input module with the preset data to understand the speed corresponding to the current data. It is used to convert the speed value calculated by the speed control module into the pushing command of the second hydraulic telescopic rod (13) and implement speed gradual control at the beginning and end of the weld. The welding position adjustment module, through the independent control of the two first hydraulic telescopic rods (7) on both sides, independently adjusts the two materials clamped and fixed by adjusting the two first hydraulic telescopic rods (7).

5. The welding method based on the intelligent welding equipment for large-wall-thickness, high-strength racks according to claim 4, characterized in that, Includes the following steps: Step 1: Place the thick-walled toothed rack to be welded between the first pressing plate (6) and the first bracket (5), and place the material to be welded to the thick-walled toothed rack between the second pressing plate (9) and the second bracket (8); Step 2: The output shaft of the motor (11) drives the threaded rod (10) to rotate, and the second pressing plate (9) and the first pressing plate (6) change from rotational motion to longitudinal linear motion, thereby achieving clamping and fixing of the large-walled thick rack and the connection position of the large-walled thick rack. Step 3: The thickness of the large-wall-thickness toothed rack is known by the distance between the first marking ruler (15) and the second marking ruler (16), while the thickness of the welding position of the large-wall-thickness toothed rack is known by the distance between the third marking ruler (17) and the fourth marking ruler (18). Step 4: Activate the first hydraulic telescopic rod (7). The first marking ruler (15), the second marking ruler (16), the third marking ruler (17) and the fourth marking ruler (18) slide synchronously on the outer wall of the scale (20). The user can refer to the scale (20) to know the position of the welding material. Step 5: The second hydraulic telescopic rod (13) pushes the sliding block (21) corresponding to the lower end of the first bracket (5) and the second bracket (8) to slide. The sliding block (21) slides in the sliding rail (14) and pushes the two items to be clamped laterally at a uniform speed. Step 6: The two objects to be clamped come into contact with the welding gun (3) at a uniform speed to complete the welding by emitting high temperature through the contact welding gun (3).

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