Large-wall-thickness high-strength rack intelligent welding equipment and welding method

Abstract

The invention discloses intelligent welding equipment and a welding method for a large-wall-thickness high-strength rack, and belongs to the field of plasma arc welding machines. The large-wall-thickness high-strength rack intelligent welding equipment comprises a base, a welding cavity is formed in the middle of the upper end of the base, and two opposite welding guns are arranged at the upper end and the lower end of one side of the welding cavity correspondingly. According to the plasma arc welding machine, the problem that in the actual using process of the plasma arc welding machine, two welding materials cannot be attached to the position needing to be welded in advance is solved, and the thickness of the clamping position is measured through the first identification ruler, the second identification ruler, the third identification ruler and the fourth identification ruler after clamping; the connecting position of a clamped object can be displayed through the dial gauge, when the welding position is adjusted, height adjustment can be directly displayed through the first identification ruler, the second identification ruler, the third identification ruler and the fourth identification ruler, and adjustment and welding are facilitated for a user.

Description

Technical Field

[0001] The present invention relates to the field of plasma arc welding machines, and specifically to an intelligent welding device and welding method for large-wall-thickness and high-strength racks. Background Technique

[0002] The intelligent welding device for large-wall-thickness and high-strength racks is a device that uses plasma arc welding technology and is specifically used for welding large-wall-thickness and high-strength racks. This device realizes efficient and precise welding through a plasma arc with a high energy density, ensuring the strength and durability of the weld seam. It is applicable to the welding of racks in heavy machinery, ships, and bridges, meeting the welding requirements of high-strength racks.

[0003] Chinese Patent with Publication No. CN115194305B discloses a plasma arc welding machine, which includes a support plate. A first adjustment device is installed on the upper end surface of the support plate, and a plasma arc welding device is installed in the middle of the upper end surface of the support plate. A first clamping device is arranged in the middle of the first adjustment device. A synchronization device is installed on the upper end surface of the workbench. After the welding torch is self-centered and clamped by the first clamping device, the first clamping device can perform height quantization adjustment on the first adjustment device, realizing height quantization adjustment of the welding torch. If the heights of the welding workpieces are not on the same plane, by adjusting the height of the welding torch, the collision between the welding torch and the welding workpiece is avoided. At the same time, the welding torch can be stabilized during the height adjustment process, avoiding deviation during welding.

[0004] During the actual use of the plasma arc welding machine of the above patent, when the thicknesses of the two materials to be welded are different, the two materials to be welded cannot be stably fixed, and it is inconvenient to pre-fit the two welding materials at the required welding position, affecting the welding effect. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent welding device and welding method for large-wall-thickness and high-strength racks. By using the first marking scale, the second marking scale, the third marking scale, and the fourth marking scale to measure the thickness of the clamping position after clamping, the connection position of the clamped item can be displayed through the scale table. When adjusting the welding position, the height of the clamped item can be adjusted by starting the first hydraulic telescopic rod, and the height adjustment can also be directly displayed by the first marking scale, the second marking scale, the third marking scale, and the fourth marking scale, facilitating the adjustment and welding by the user, and solving the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: An intelligent welding device for large-wall-thickness high-strength racks, including a base. A welding chamber is provided at the middle position of the upper end of the base. Two opposite welding torches are respectively provided at the upper and lower ends on one side of the welding chamber. The welding torch uses a plasma arc as the welding heat source, and the arc is constrained through a specially designed nozzle to obtain a plasma arc with a high energy density for high-temperature welding. A first bracket with a first pressing piece inside is provided on one side of the upper end of the base, and a second bracket with a second pressing piece inside is provided on the other side of the upper end of the base. A first marking scale is provided at the front end of the first pressing piece, and a second marking scale is provided at the front end of the first bracket. A scale table is provided on the surface of the welding chamber facing the first marking scale. The item held can be measured through the markings of the first marking scale and the second marking scale, and the position of the held item can also be intuitively understood through the first marking scale and the second marking scale.

[0007] Preferably, the widths of the first bracket and the first pressing piece are smaller than those of the second bracket and the second pressing piece. A fourth marking scale is provided at the front end of the second bracket, and a third marking scale is provided at the front end of the second pressing piece. The width of the large-wall-thickness rack held by the first bracket and the first pressing piece is relatively small, and a large clamping area is not required, reducing the overall floor area of the device and the overall cost of the equipment. The thickness of the item held by the second bracket and the second pressing piece can be intuitively understood through the fourth marking scale and the third marking scale.

[0008] Preferably, the distance between the first marking scale and the second marking scale is equal to the thickness of the item held between the first pressing piece and the first bracket, and the distance between the third marking scale and the fourth marking scale is equal to the thickness of the item held between the lower end of the second pressing piece and the upper end of the second bracket. The thickness of the large-wall-thickness rack can be intuitively understood through the distance between the first marking scale and the second marking scale, and the thickness of the welding material for the large-wall-thickness rack can be measured by the third marking scale and the fourth marking scale.

[0009] Preferably, first hydraulic expansion rods are provided at the lower ends of the first bracket and the second bracket. Through the push of the first hydraulic expansion rods, the push of the first hydraulic expansion rods can also be marked on the surface of the scale table by the first marking scale, the second marking scale, the third marking scale, and the fourth marking scale.

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

[0011] Preferably, sliding blocks are fixedly arranged on one side of the lower ends of the two first hydraulic telescopic rods facing the base. Sliding rails are arranged on both sides of the upper end inside the base, and the sliding blocks are embedded inside the sliding rails and are slidably connected to the inside of the sliding rails. A second hydraulic telescopic rod is arranged at the middle position on one side of the lower end of the sliding block. The sliding of the sliding block along the sliding rail can make the article to be welded continuously move towards the welding torch, and the second hydraulic telescopic rod can push it evenly and stably.

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

[0013] Preferably, the input pipe is hermetically connected to the inside of the heat dissipation chamber through a first shunt pipe, and the output pipe is hermetically connected to the inside of the heat dissipation chamber through a second shunt pipe. Five first shunt pipes and five second shunt pipes are evenly distributed in a surrounding manner. On the side of the first shunt pipe facing the flow track inside the input pipe and on the side of the second shunt pipe facing the flow track inside the output pipe, the input and output of the liquid can be realized through the reserved and connected second shunt pipe and first shunt pipe.

[0014] Preferably, a touch screen composed of a data entry module, a speed control module, and a welding position adjustment module is arranged on one side of the front end of the base, where:

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

[0016] Speed control module: Compare the data input by the data entry module with the pre-set data to know the corresponding speed, and be used to convert the speed value calculated by the speed calculation module into a propulsion instruction for the second hydraulic telescopic rod, and implement speed gradient control at the start and end of the weld;

[0017] Welding position adjustment module: Through the independent control of the first hydraulic telescopic rods on both sides, the two materials clamped and fixed can be independently adjusted by independently adjusting the two first hydraulic telescopic rods.

[0018] The welding method of the intelligent welding equipment for large wall thickness and high-strength racks includes the following steps:

[0019] Step 1: Place the large-wall-thickness rack to be welded between the first pressing piece and the first bracket, and place the material to be welded to the large-wall-thickness rack between the second pressing piece and the second bracket;

[0020] Step 2: The output shaft of the motor drives the threaded rod to rotate, and the second pressing piece and the first pressing piece are transformed from rotational motion into longitudinal linear motion, realizing the clamping and fixing of the large-wall-thickness rack and the connection position of the large-wall-thickness rack;

[0021] Step 3: The thickness of the large-wall-thickness rack can be understood through the distance between the first marking scale and the second marking scale, while the thickness of the welding position of the large-wall-thickness rack can be understood through the distance between the third marking scale and the fourth marking scale;

[0022] Step 4: Start the first hydraulic expansion rod, and the first marking scale, the second marking scale, the third marking scale and the fourth marking scale will slide synchronously on the outer wall of the scale table. The user can refer to the scale table to understand the position of the welding material;

[0023] Step 5: The second hydraulic expansion rod will push the sliding blocks corresponding to the lower ends of the first bracket and the second bracket to slide. The sliding blocks slide in the sliding rails and horizontally and uniformly push the two items to be clamped;

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

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

[0026] When the first bracket and the first pressing piece of the present invention clamp the large-wall-thickness rack, they can drive the first marking scale and the second marking scale to move and directly understand the thickness through the scale table. At the same time, when the second bracket and the second pressing piece clamp the material at the welding position of the large-wall-thickness rack, they can move through the third marking scale and the fourth marking scale and directly understand the thickness through the scale table. On the other hand, through the markings of the scale table and the positions of the first marking scale, the second marking scale, the third marking scale and the fourth marking scale, the current welding position and the fixed position of the large-wall-thickness rack after welding can be understood. Similarly, when the first hydraulic expansion rod expands and contracts to adjust the height of the clamped item, it can also be referenced through the scale table to achieve precise adjustment of the welding position and the horizontal height of the item to be welded, improve the subsequent welding effect, and be suitable for repeated welding. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 2 is a top view of the positional relationship of the welding cavity of the present invention;

[0029] Figure 3Schematic diagram of the positional relationship of the scale table of the present invention;

[0030] Figure 4 Schematic diagram of the pushing trajectory of the second hydraulic telescopic rod of the present invention;

[0031] Figure 5 Cross-sectional view of the positional relationship of the second hydraulic telescopic rod of the present invention;

[0032] Figure 6 Schematic diagram of the intelligent welding system of the present invention;

[0033] Figure 7 Cross-sectional view of the internal structure of the welding torch of the present invention;

[0034] Figure 8 Cross-sectional view of the flow trajectory of the liquid inside the installation cavity of the present invention;

[0035] Figure 9 Cross-sectional view of the connection structure of the second shunt pipe of the present invention;

[0036] Figure 10 Cross-sectional view of the connection structure of the first shunt pipe of the present invention.

[0037] In the figure: 1, base; 2, chassis; 3, welding torch; 4, touch screen; 5, first bracket; 6, first pressing piece; 7, first hydraulic telescopic rod; 8, second bracket; 9, second pressing piece; 10, threaded rod; 11, motor; 12, light-shielding piece; 13, second hydraulic telescopic rod; 14, sliding rail; 15, first marking scale; 16, second marking scale; 17, third marking scale; 18, fourth marking scale; 19, welding cavity; 20, scale table; 21, sliding block; 22, installation cavity; 23, input pipe; 24, output pipe; 25, first shunt pipe; 26, heat dissipation cavity; 27, partition plate; 28, second shunt pipe; 29, plasma arc emission cavity. Detailed implementation method

[0038] The present invention will be further described below in conjunction with specific embodiments.

[0039] Embodiment 1: As shown in Figure 1 and Figure 4 , a large-wall-thickness and high-strength rack intelligent welding device in this embodiment includes a base 1. One side of the upper end of the base 1 is provided with a first bracket 5, and a first pressing piece 6 is arranged inside the first bracket 5. The first pressing piece 6 can slide inside the first bracket 5 to clamp the item to be welded. On the other side of the upper end of the base 1, a second bracket 8 is provided, and a second pressing piece 9 is arranged inside the second bracket 8. By sliding the second pressing piece 9 inside the second bracket 8, the item to be welded can also be clamped;

[0040] The first pressing piece 6 slides within the first bracket 5, and the second pressing piece 9 slides within the second bracket 8, which can respectively fix two materials to be welded. Through separate fixation, the welding positions are made to fit. The widths of the first bracket 5 and the first pressing piece 6 are smaller than those of the second bracket 8 and the second pressing piece 9. The first bracket 5 and the first pressing piece 6 with smaller widths are used to clamp the large-wall-thickness rack, while the second bracket 8 and the second pressing piece 9 with larger widths can press and fix the materials to be welded for the large-wall-thickness rack. The size of the clamping position is designed according to the clamped object, avoiding an increase in the overall floor area of the equipment and an increase in the cost of the equipment.

[0041] Among them, threaded rods 10 for transmission are provided inside both the first pressing piece 6 and the second bracket 8. The outer part of one threaded rod 10 is in threaded cooperation with the middle position of the first pressing piece 6. The threaded rod 10 passing through the inside of the first pressing piece 6 is rotationally connected to the first bracket 5. The outer part of the other threaded rod 10 is in threaded cooperation with the second bracket 8. The upper and lower ends of the threaded rod 10 inside the second bracket 8 are respectively rotationally connected to the outer wall of the second pressing piece 9. The two threaded rods 10 can respectively drive the first pressing piece 6 and the second pressing piece 9 to press down and fix the materials 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 piece 9 by bolts, and the motors 11 stably output to the threaded rod 10 to complete the clamping action required for welding.

[0043] The different installation positions of the two threaded rods 10 are for clamping objects of different sizes. The threaded rod 10 directly passing through the first pressing piece 6 can handle the fixation of the strip-shaped large-wall-thickness rack, while the threaded rod 10 does not pass through the second pressing piece 9. By passing through the second bracket 8 to push the second pressing piece 9, the second pressing piece 9 and the second bracket 8 can stably clamp objects with larger volumes.

[0044] In order to understand the relative position relationship between the object clamped by the first bracket 5 and the first pressing piece 6 and the object clamped by the second pressing piece 9 and the second bracket 8, and to facilitate the adjustment of the two clamping positions, a first marking scale 15 is extended at the front end of the first pressing piece 6, a second marking scale 16 is extended at the front end of the position where the first bracket 5 places the material to be welded, a fourth marking scale 18 is extended at the front end of the position where the second bracket 8 places the material to be welded, and a third marking scale 17 is extended at the front end of the side of the lower end of the second pressing piece 9 facing the position where the second bracket 8 places the material to be welded. Through the extended first marking scale 15, second marking scale 16, third marking scale 17, and fourth marking scale 18, the user can be prevented from measuring the fixed objects of the two welding materials at multiple angles, and the thickness of the material to be welded can also be directly understood.

[0045] The distance between the first marking ruler 15 and the second marking ruler 16 is equal to the thickness of the item clamped between the first pressing piece 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 clamped between the lower end of the second pressing piece 9 and the upper end of the second bracket 8;

[0046] Among them, in order to adjust the welding position and the horizontal height of the two clamped items, a first hydraulic telescopic rod 7 is arranged at the middle position of the lower ends of the first bracket 5 and the second bracket 8. By driving the first hydraulic telescopic rod 7 respectively, the horizontal height of the two clamping positions of the first bracket 5 and the first pressing piece 6 and the second bracket 8 and the second pressing piece 9 can be adjusted;

[0047] In order to clearly understand the subsequent welding position and the adjustment example during adjustment, a welding cavity 19 is arranged at the middle position of the upper end of the base 1. A scale table 20 is arranged on the surface 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 table 20. Through the scale table 20, the user can intuitively understand the thickness of the items clamped on both sides and the position status of the clamped items after horizontal adjustment, improving the efficiency of position adjustment before welding.

[0048] Among them, on the side of the lower ends of the two first hydraulic telescopic rods 7 facing the base 1, a slidable block 21 is fixedly arranged. On both sides of the upper end inside the base 1, sliding rails 14 are arranged, and the slidable block 21 is embedded inside the sliding rail 14 and is slidably connected with the inside of the sliding rail 14. After clamping two welding materials, the two slidable blocks 21 respectively drag the clamped materials at the upper end and slide along the sliding rail 14 to complete the pushing of the materials, so that the welding position continuously and evenly contacts the welding torch 3 for welding. The welding torch 3 uses the plasma arc as the welding heat source, and the arc is constrained through a specially designed nozzle, so as to obtain a plasma arc with high energy density for high-temperature welding;

[0049] As Figure 2 shown, a second hydraulic telescopic rod 13 is arranged at the middle position of one side of the lower end of the slidable block 21. By extending the second hydraulic telescopic rod 13, the transverse position of the clamped item can be pushed and adjusted, realizing uniform and stable contact with the welding torch 3 and completing the welding:

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

[0051] A pair of chassis 2 are longitudinally arranged at the lower end of the base 1. Two opposite welding torches 3 are respectively arranged at the upper end and the lower end on one side of the welding cavity 19. Through a pair of welding torches 3, simultaneous welding of the upper and lower surfaces of the welding material can be realized, improving the welding effect when dealing with thicker welding positions.

[0052] To improve the welding effect, as Figure 1 , Figure 3 , Figure 5 and Figure 6 shown, on one side of the front end of the base 1, a touch screen 4 is provided. The touch screen 4 is built-in with an intelligent welding system, and the intelligent welding system includes: a data entry module, a speed control module, and a welding position adjustment module; among them, the data entry module: receives the material thickness values on both sides of the welding position input by the operator through the touch screen interaction interface. The thickness values are known through the spacing between the first scale 15, the second scale 16, the third scale 17, and the fourth scale 18 in combination with the scale table 20. The touch screen graphical interface simplifies the parameter input process and reduces the operation threshold;

[0053] The speed control module: compares the data input by the data entry module with the pre-set data to know the corresponding speed of the current data, and is used to convert the speed value calculated by the speed calculation module into a propulsion instruction for the second hydraulic expansion link 13, and implements speed gradient control at the start and end of the weld seam to improve the welding effect. Implementing speed gradient control at the start and end of the weld seam can avoid sudden start and cause the welding material to shift and slip due to gravity;

[0054] The welding position adjustment module: through the independent control of the two first hydraulic expansion links 7 on both sides, the two clamped and fixed materials can be independently adjusted by independently adjusting the two first hydraulic expansion links 7, and the adjustment status can be intuitively understood through the spacing between the first scale 15, the second scale 16, the third scale 17, and the fourth scale 18 in combination with the scale table 20;

[0055] To cool the plasma arc generation position inside the welding torch 3 so that the welding torch 3 can perform welding work efficiently for a long time, as Figure 7 , Figure 8 , Figure 9 and Figure 10 shown, at the lower end inside the welding torch 3, a plasma arc emission cavity 29 is provided, and a heat dissipation cavity 26 is arranged around the plasma arc emission cavity 29. The high temperature generated when the plasma arc emits will be transmitted to the inside of the heat dissipation cavity 26, and the heat can be directly removed through the heat dissipation cavity 26;

[0056] Among them, on one side inside the heat dissipation cavity 26, a partition plate 27 is provided. Through the partition of the partition plate 27, the liquid used for heat dissipation can be transmitted inside the heat dissipation cavity 26, conveyed from one side of the partition plate 27 to the inside of the heat dissipation cavity 26, and the liquid after absorbing heat is discharged from the other side of the partition plate 27 to the outside of the heat dissipation cavity 26;

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

[0058] In order to enable the liquid inside the input pipe 23 to be evenly transmitted into the heat dissipation cavity 26, the input pipe 23 and the inside of the heat dissipation cavity 26 are hermetically connected through a first shunt pipe 25, and the output pipe 24 and the inside of the heat dissipation cavity 26 are hermetically connected through a second shunt pipe 28. Five first shunt pipes 25 and five second shunt pipes 28 are evenly distributed around. The five evenly distributed second shunt pipes 28 can enable the liquid after heat absorption in different regions inside the heat dissipation cavity 26 to be quickly discharged, avoiding the continuously flowing of the liquid after heat absorption in the heat dissipation cavity 26. The five evenly distributed first shunt pipes 25 can enable the low-temperature liquid for heat dissipation to be evenly transmitted to different regions inside the heat dissipation cavity 26, avoiding the difficult contact of the heat dissipation position at the rear end with the low-temperature liquid, so that the temperature can be evenly and comprehensively reduced;

[0059] On the side of the first shunt pipe 25 facing the flow track inside the input pipe 23, through the inclination of the first shunt pipe 25, the liquid inside the input pipe 23 can be more conveniently discharged, and it also avoids the liquid discharged from the other first shunt pipes 25 flowing into other first shunt pipes 25 due to liquid flow, avoiding the unsmooth liquid flow track;

[0060] Among them, on the side of the second shunt pipe 28 facing the flow track inside the output pipe 24, through the inclination of the second shunt pipe 28, it is convenient for the liquid sent into the heat dissipation cavity 26 by the input pipe 23 to actively flow into the second shunt pipe 28 during the transmission process, and actively discharge the liquid after heat absorption inside the output pipe 24, facilitating the stable and rapid discharge of the heat-absorbing liquid. When the liquid flows into the heat dissipation cavity 26 and surrounds the heat dissipation cavity 26, it enters from the position of the first shunt pipe 25 and is discharged from the position of the second shunt pipe 28 after heat absorption.

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

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

[0063] Working principle: When using the intelligent welding equipment for large-wall-thickness high-strength racks for welding, place the large-wall-thickness rack to be welded between the first pressing piece 6 and the first bracket 5, and place the material to be welded to the large-wall-thickness rack between the second pressing piece 9 and the second bracket 8. Start the motor 11 corresponding to the upper end of the threaded rod 10. 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 piece 6 and the second bracket 8 respectively. Through the restriction of the first pressing piece 6 by the first bracket 5 and the restriction of the second pressing piece 9 by the second bracket 8, the second pressing piece 9 and the first pressing piece 6 are changed from rotational motion to longitudinal linear motion, realizing the clamping and fixing of the large-wall-thickness rack and the connection position of the large-wall-thickness rack. The longitudinal movement of the first pressing piece 6 will drive the first scale 15 to slide at the front end of the scale table 20, and the longitudinal movement of the second pressing piece 9 will drive the third scale 17 to slide at the front end of the scale table 20. The user can know the thickness of the large-wall-thickness rack through the distance between the first scale 15 and the second scale 16, and can know the thickness of the welding position of the large-wall-thickness rack through the distance between the third scale 17 and the fourth scale 18. Start the first hydraulic telescopic rod 7 to adjust the horizontal positions 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 table 20. The user can refer to the scale table 20 to know the position of the welding material. Start the second hydraulic telescopic rod 13. The second hydraulic telescopic rod 13 will push the sliding blocks 21 corresponding to the lower ends of the first bracket 5 and the second bracket 8 to slide. The sliding blocks 21 slide in the sliding rail 14 and horizontally and uniformly push the two items to be clamped. The two items to be clamped come into contact with the welding position of the welding torch 3 at a uniform speed, using the plasma arc as the welding heat source, and restricting the arc through a specially designed nozzle, so as to obtain a plasma arc with high energy density for high-temperature welding, and complete the welding by emitting high temperature through the contact welding torch 3.

[0064] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0065] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. An intelligent welding device for a large-wall-thickness and high-strength rack, comprising a base (1), wherein a welding cavity (19) is arranged at the middle position of the upper end of the base (1), and it is characterized in that, On the upper and lower ends of one side of the welding chamber (19), two opposite welding torches (3) are respectively arranged. The welding torch (3) uses a plasma arc as the welding heat source, restricts the arc through a nozzle, and obtains a plasma arc with a high energy density for high-temperature welding. On one side of the upper end of the base (1), a first bracket (5) with a first pressing piece (6) inside is arranged. On the other side of the upper end of the base (1), a second bracket (8) with a second pressing piece (9) inside is arranged. A first marking scale (15) is arranged at the front end of the first pressing piece (6), and a second marking scale (16) is arranged at the front end of the first bracket (5).

2. The intelligent welding equipment for large-wall-thickness and high-strength racks according to claim 1, characterized in that The widths of the first bracket (5) and the first pressing piece (6) are smaller than those of the second bracket (8) and the second pressing piece (9). A fourth marking scale (18) is arranged at the front end of the second bracket (8), and a third marking scale (17) is arranged at the front end of the second pressing piece (9).

3. The intelligent welding equipment for large-wall-thickness and high-strength racks according to claim 2, wherein, The distance between the first marking scale (15) and the second marking scale (16) is equal to the thickness of the article clamped between the first pressing piece (6) and the first bracket (5). The distance between the third marking scale (17) and the fourth marking scale (18) is equal to the thickness of the article clamped between the lower end of the second pressing piece (9) and the upper end of the second bracket (8).

4. An intelligent welding device for large-wall-thickness and high-strength racks according to claim 1, characterized in that First hydraulic expansion rods (7) are arranged at the lower ends of the first bracket (5) and the second bracket (8).

5. An intelligent welding device for a large-wall-thickness and high-strength rack according to claim 2, characterized in that, A scale table (20) is arranged on the surface of the welding chamber (19) facing the first marking scale (15). The first marking scale (15), the second marking scale (16), the third marking scale (17), and the fourth marking scale (18) all extend to the front end of the scale table (20).

6. The intelligent welding equipment for large-wall-thickness and high-strength racks according to claim 4, characterized in that, On the surface of the lower ends of the two first hydraulic expansion rods (7) facing the base (1), slidable blocks (21) are fixedly arranged. On both sides of the upper end inside the base (1), sliding rails (14) are arranged, and the slidable blocks (21) are embedded inside the sliding rails (14) and are slidably connected to the inside of the sliding rails (14). At the middle position on one side of the lower end of the slidable block (21), a second hydraulic expansion rod (13) is arranged.

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

8. An intelligent welding device for large-wall-thickness and high-strength racks according to claim 7, characterized in that, The input pipe (23) is hermetically connected to the inside of the heat dissipation chamber (26) through a first shunt pipe (25). The output pipe (24) is hermetically connected to the inside of the heat dissipation chamber (26) through a second shunt pipe (28). Five first shunt pipes (25) and five second shunt pipes (28) are evenly distributed in a surrounding manner. On the surface of the first shunt pipe (25) facing the flow track inside the input pipe (23), on the surface of the second shunt pipe (28) facing the flow track inside the output pipe (24).

9. The intelligent welding equipment for large-wall-thickness and high-strength racks according to claim 8, characterized in that On one side of the front end of the base (1), a touch screen (4) composed of a data entry module, a speed control module, and a welding position adjustment module is provided, where: The data entry module receives the thickness values of the materials on both sides of the welding position input by the operator through the touch screen interaction interface. The thickness values are obtained by matching the scale (20) with the distances between the first scale (15), the second scale (16), the third scale (17), and the fourth scale (18); The speed control module compares the data input at the position of the data entry module with the pre-set data to obtain the corresponding speed, and is used to convert the speed value calculated by the speed calculation module into a propulsion command for the second hydraulic telescopic rod (13) to implement speed gradient control at the start and end of the weld; The welding position adjustment module independently controls the two first hydraulic telescopic rods (7) on both sides to independently adjust the two clamped materials; 10. The welding method of the intelligent welding equipment for large-wall-thickness and high-strength racks according to any one of claims 1-9, characterized in that, It includes the following steps: Step 1: Place the large wall thickness rack to be welded between the first pressing piece (6) and the first bracket (5), and place the material to be welded with the large wall thickness rack between the second pressing piece (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 piece (9) and the first pressing piece (6) are changed from rotational motion to longitudinal linear motion to clamp and fix the large wall thickness rack and the connection position of the large wall thickness rack; Step 3: The thickness of the large wall thickness rack is understood through the distance between the first scale (15) and the second scale (16), and the thickness of the welding position of the large wall thickness rack is understood through the distance between the third scale (17) and the fourth scale (18); Step 4: Start the first hydraulic telescopic rod (7), and the first scale (15), the second scale (16), the third scale (17), and the fourth scale (18) slide synchronously on the outer wall of the scale (20). The user can refer to the scale (20) to understand the position of the welding material; Step 5: The second hydraulic telescopic rod (13) pushes the sliding blocks (21) corresponding to the lower ends of the first bracket (5) and the second bracket (8) to slide. The sliding blocks (21) slide in the sliding rail (14) and horizontally push the two items to be clamped at a constant speed; Step 6: The two items to be clamped contact the welding position of the welding torch (3) at a constant speed, and the welding is completed by the high temperature emitted by the welding torch (3).

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