A crane turret part welding device and welding method

Abstract

The application discloses a crane rotary table part welding device and a welding method, and relates to the technical field of welding. The first support frame is internally provided with a preheating mechanism for preheating the parts, and the preheating mechanism is internally provided with a welding gun mechanism for welding the parts. The welding gun mechanism can approach the welding area at the optimal angle by adjusting the position of the angle supporting mechanism, thereby improving the accuracy and consistency of welding, and improving the quality and strength of the welding seam. The angle measuring mechanism can detect the angle change between the two parts during the welding process and timely find any angle deviation that may cause welding defects. The angle measuring mechanism can also detect the deformation of the parts caused by thermal stress during the welding process, so that the operator can take timely measures to correct or compensate for these changes during the welding process, thereby effectively avoiding size deviation or structural problems caused by thermal stress.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a crane rotary table part welding device and welding method. BACKGROUND

[0002] For example, the patent document with publication number CN118106672A, named large steel structure welding preheating device, relates to a material processing technical field, which comprises a support, a fixed frame is arranged above the support, an upper fixed disc and a lower fixed disc are connected to the upper and lower ends of the fixed frame respectively, side sliding rails are symmetrically arranged on the two sides of the fixed frame, a plurality of groups of side sliding blocks are slidably arranged inside the side sliding rails, a plurality of independent induction coils are distributed between the upper fixed disc and the lower fixed disc, the two sides of each induction coil are connected to each side sliding block, and a lifting frame is arranged below the support; compared with the prior art, the present application ensures that the magnetic field of the plurality of induction coils is uniformly distributed in a spiral shape at any interval, and the uniform heating effect of the mechanical parts is achieved.

[0003] The above-mentioned invention needs to preheat the workpiece when welding the parts, but the crane rotary table parts cannot be preheated completely when preheating due to the large size and thickness of the parts, and the welding size deviation or structural problem of the parts will be caused due to the generation of thermal stress when welding the parts due to the large size and thickness of the parts, and the local overheating in the welding process may also cause the parts to deform, and the size and angle of the parts change during the welding process, so the welding method cannot be corrected in time and emergency treatment is needed, therefore, the crane rotary table part welding device and welding method are provided to meet the needs. SUMMARY

[0004] The purpose of the present application is to provide a crane rotary table part welding device and welding method, which can effectively solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a crane rotary table part welding device, comprising a first support frame, a preheating mechanism for preheating the parts is arranged inside the first support frame, a welding torch mechanism for welding the parts is arranged inside the preheating mechanism, a surface cleaning mechanism for cleaning the surface of the parts is arranged on the outer surface of the preheating mechanism, a guide mechanism for heat treatment of the welding part to reduce thermal stress is arranged inside the preheating mechanism, an angle supporting mechanism for supporting the welding angle of the welding torch mechanism is arranged on one side of the preheating mechanism, and an angle measuring mechanism for detecting the size deformation of the parts during welding is arranged on one side of the preheating mechanism.

[0006] The ignition mechanism includes an air guide pipe for guiding the flame direction, and the air guide pipe is in the shape of a letter Y, and a plurality of guide holes are formed in the bottom of the outer surface of the air guide pipe for preheating the welding parts.

[0007] Wherein, the preheating mechanism includes a mounting block, one side of the mounting block is provided with a shaft rod, a second support frame is rotatably installed in the inside of the shaft rod, a communication pipe is arranged in the inside of the second support frame, an air pipe is arranged at one end of the communication pipe, and one end of the air pipe penetrates the mounting block, a spring sheet is arranged between the second support frame and the mounting block, and a tension spring is arranged at the bottom of the second support frame and the mounting block.

[0008] Wherein, the welding gun mechanism includes a shaft frame, the shaft frame is rotatably installed on the outer surface of the shaft rod, a support pipe frame is arranged at the upper end of the shaft frame, an elastic arc plate is arranged between the support pipe frame and the mounting block, a gas storage chamber is arranged at one side of the support pipe frame, and a welding gun is arranged at one side of the support pipe frame.

[0009] Wherein, the cleaning mechanism includes a connecting block, the connecting block is installed on the outer surface of the communication pipe, and a sanding sheet is arranged at the bottom of the connecting block.

[0010] Wherein, the air guide pipe is installed in the inside of the communication pipe, two guide blocks are arranged in the inside of one side of the air guide pipe, and air guide holes are formed in the inside of the two guide blocks.

[0011] Wherein, the angle support mechanism includes a guide rail block, the guide rail block is fixedly installed on one side of the mounting block, a sliding groove is formed in the inside of the guide rail block, a sliding block is slidably installed in the inside of the sliding groove, and a support plate is arranged at one side of the sliding block.

[0012] Wherein, the guide rail block is in the shape of a quarter of a semicircle, and the position of the sliding block can be fixed by bolts.

[0013] Wherein, the angle measuring mechanism includes an arc block, the arc block is fixedly installed on one side of the mounting block, a guide groove is formed in the inside of the arc block, a support sheet is slidably installed in the inside of the guide groove, two installation openings are symmetrically formed at one side of the support sheet, and installation covers are arranged in the inside of the two installation openings.

[0014] Wherein, a ruler sheet is rotatably installed in the inside of the installation cover, a roller is arranged at one side in the inside of the ruler sheet, and a spring is arranged at one side of the ruler sheet.

[0015] The present application also provides a welding method of the crane turntable part welding device, and the specific welding method is as follows:

[0016] S1, when welding crane turret parts using the welding device, first splice two crane turret parts together, then adjust the support position of the angle support mechanism so that the welding torch mechanism can weld the parts at the appropriate angle;

[0017] S2, after adjusting the support position of the angle support mechanism, the user adjusts the measurement position of the angle measurement mechanism so that the angle measurement mechanism fits the surface of the part, the set angle measurement mechanism can detect whether the angle between the two welded parts changes during welding, and whether the part is affected by thermal stress during welding and whether it deforms;

[0018] Wherein, by adjusting the position of the angle support mechanism, the welding torch mechanism can approach the welding area at the optimal angle, improving the accuracy and consistency of welding, thereby improving the quality and strength of the weld.

[0019] The angle measurement mechanism can also detect the deformation of the part caused by thermal stress during welding, so that the operator can take timely measures to correct or compensate for these changes during welding, thereby effectively avoiding dimensional deviations or structural problems caused by thermal stress.

[0020] S3, when welding parts using the welding torch mechanism, the preheating mechanism can cooperate with the ignition mechanism to preheat the parts to be welded, the ignition mechanism first heats the parts to reduce thermal stress and prevent the welded parts from deforming and being unable to splice with the main body, and the cleaning mechanism can clean the welding position before welding.

[0021] Wherein, the preheating mechanism can cooperate with the ignition mechanism to preheat the parts to be welded, which can reduce the temperature difference between the welding area and the surrounding material, thereby reducing the thermal stress generated during welding. Proper preheating helps to reduce the cooling rate of the metal, prevent hardening and embrittlement caused by rapid cooling, and reduce the risk of welding cracks. The ignition mechanism first heats the parts to further ensure that the parts reach the appropriate working temperature before welding to reduce thermal stress, effectively prevent deformation problems caused by local overheating during welding, and also reduce the probability of welding defects such as cracks and pores, and enhance the strength and reliability of the weld.

[0022] By preheating the entire welding area rather than just the weld itself, a more uniform heat distribution can be achieved, allowing the welded parts to fit together better, ensuring the integrity of the structure and dimensional accuracy, and before welding, the cleaning mechanism cleans the welding position, removing the surface oxide layer, oil stains and other impurities, because any surface contaminants will affect the quality of the weld, may cause porosity, slag inclusion and other defects.

[0023] In summary, the technical effects and advantages of the present application are:

[0024] 1、The present application can make the welding torch mechanism approach the welding area at the optimal angle by adjusting the position of the angle support mechanism, improving the accuracy and consistency of welding, thereby improving the quality and strength of the weld, and the angle measuring mechanism can detect the change in the angle between the two parts during welding, discovering any angle deviation that may cause welding defects in time. The angle measuring mechanism can also detect the deformation of the parts caused by thermal stress during welding, allowing the operator to take timely measures to correct or compensate for these changes during welding, thereby effectively avoiding dimensional deviations or structural problems caused by thermal stress.

[0025] 2、The preheating mechanism in the present application can cooperate with the ignition guide mechanism to preheat the parts to be welded, reducing the temperature difference between the welding area and the surrounding material, thereby reducing the thermal stress generated during welding. Proper preheating helps to reduce the cooling rate of the metal, preventing hardening and embrittlement caused by rapid cooling, while reducing the risk of welding cracks. The ignition guide mechanism first heats the parts, further ensuring that the parts reach the appropriate working temperature before welding to reduce thermal stress, effectively preventing deformation caused by local overheating during welding, and reducing the probability of welding defects such as cracks and pores, enhancing the strength and reliability of the weld. By preheating the entire welding area rather than just the weld itself, a more uniform heat distribution can be achieved, allowing the welded parts to fit together better, ensuring the integrity of the structure and dimensional accuracy, and before welding, the cleaning mechanism cleans the welding position, removing the surface oxide layer, oil stains and other impurities, because any surface contaminants will affect the quality of the weld, may cause porosity, slag inclusion and other defects. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, without creative labor, other drawings can also be obtained from these drawings.

[0027] Figure 1It is a first perspective view of the crane slewing ring part welding device;

[0028] Figure 2 It is a second perspective view of the crane slewing ring part welding device;

[0029] Figure 3 It is a perspective connection structure diagram of the welding gun mechanism;

[0030] Figure 4 It is a first perspective connection structure diagram of the welding gun mechanism and the preheating mechanism;

[0031] Figure 5 It is a second perspective connection structure diagram of the welding gun mechanism and the preheating mechanism;

[0032] Figure 6 It is a third perspective connection structure diagram of the welding gun mechanism and the preheating mechanism;

[0033] Figure 7 It is a fourth perspective connection structure diagram of the welding gun mechanism and the preheating mechanism;

[0034] Figure 8 It is a perspective connection structure diagram of the preheating mechanism;

[0035] Figure 9 It is a first perspective connection structure diagram of the ignition mechanism;

[0036] Figure 10 It is a second perspective connection structure diagram of the ignition mechanism;

[0037] Figure 11 It is a first perspective connection structure diagram of the angle measuring mechanism;

[0038] Figure 12 It is a second perspective connection structure diagram of the angle measuring mechanism;

[0039] Figure 13 It is a perspective connection structure diagram of the angle supporting mechanism.

[0040] In the figure: 1, the first support frame; 2, the welding torch mechanism; 21, the support pipe frame; 22, the welding torch; 23, the gas storage chamber; 25, the elastic arc plate; 26, the shaft frame; 3, the preheating mechanism; 31, the air pipe; 32, the mounting block; 33, the elastic sheet; 34, the second support frame; 35, the shaft rod; 36, the communication pipe; 38, the tension spring; 4, the cleaning mechanism; 41, the connecting block; 42, the sanding sheet; 5, the ignition mechanism; 51, the air guide pipe; 52, the guide block; 53, the air guide hole; 55, the guide hole; 6, the angle measuring mechanism; 61, the arc block; 62, the guide groove; 63, the support sheet; 64, the mounting cover; 65, the mounting port; 66, the spring; 67, the ruler sheet; 68, the roller; 7, the angle support mechanism; 71, the guide rail block; 72, the sliding groove; 73, the support plate; 74, the sliding block. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] Embodiment one, reference Figures 1 to 13 The crane turntable part welding device and welding method shown in the figure, including the first support frame 1, the inside of the first support frame 1 is provided with the preheating mechanism 3 for preheating the parts, the inside of the preheating mechanism 3 is provided with the welding torch mechanism 2 for welding the parts, the outer surface of the preheating mechanism 3 is provided with the cleaning mechanism 4 for cleaning the surface of the parts, the inside of the preheating mechanism 3 is provided with the ignition mechanism 5 for heat treatment of the welding part of the parts to reduce thermal stress, one side of the preheating mechanism 3 is provided with the angle support mechanism 7 for supporting the welding angle of the welding torch mechanism 2, one side of the preheating mechanism 3 is provided with the angle measuring mechanism 6 for detecting the dimensional change of the parts during welding;

[0043] It is worth noting that when using the welding device to weld the crane turntable parts, first splice the two crane turntable parts together, then adjust the support position of the angle support mechanism 7 so that the welding torch mechanism 2 can weld the parts at the appropriate angle;

[0044] After adjusting the support position of the angle support mechanism 7, the user adjusts the measurement position of the angle measuring mechanism 6, so that the angle measuring mechanism 6 is attached to the surface of the parts, the angle measuring mechanism 6 can detect whether the angle between the two welded parts changes during welding, and whether the parts are deformed due to the influence of thermal stress during welding;

[0045] Wherein, by adjusting the position of the angle support mechanism 7, the welding torch mechanism 2 can approach the welding area at the optimal angle, improving the accuracy and consistency of welding, thereby improving the quality and strength of the weld. The angle measuring mechanism 6 can detect the change in the angle between the two parts during the welding process and promptly identify any angle deviation that may cause welding defects.

[0046] The angle measuring mechanism 6 can also detect the deformation of the parts caused by thermal stress during the welding process, allowing the operator to take timely measures to correct or compensate for these changes during the welding process, effectively avoiding size deviations or structural problems caused by thermal stress.

[0047] When using the welding torch mechanism 2 to weld the parts, the preheating mechanism 3 can cooperate with the ignition mechanism 5 to preheat the parts to be welded. The ignition mechanism 5 first heats the parts to reduce thermal stress, preventing the welded parts from deforming and failing to splice with the main body. The cleaning mechanism 4 can clean the welding position before welding.

[0048] The preheating mechanism 3 can cooperate with the ignition mechanism 5 to preheat the parts to be welded, which can reduce the temperature difference between the welding area and the surrounding material, thereby reducing the thermal stress generated during welding. Proper preheating helps to reduce the cooling rate of the metal, preventing hardening and embrittlement caused by rapid cooling, while reducing the risk of welding cracks. The ignition mechanism 5 first heats the parts to further ensure that the parts reach the appropriate working temperature before welding to reduce thermal stress, effectively preventing deformation caused by local overheating during welding, and reducing the probability of welding defects such as cracks and pores, enhancing the strength and reliability of the weld.

[0049] By preheating the entire welding area rather than just the weld itself, more uniform heat distribution can be achieved, allowing the welded parts to be better spliced together, ensuring the integrity of the structure and dimensional accuracy. Moreover, before welding, the cleaning mechanism cleans the welding position, removing surface oxidation, oil stains and other impurities. Because any surface contaminants can affect the quality of the weld, they may cause defects such as pores and slag inclusions.

[0050] Embodiment two, according to the angle support mechanism 7, welding torch mechanism 2 and angle measuring mechanism 6 provided in embodiment one, this embodiment provides further technical solutions for the angle support mechanism 7, welding torch mechanism 2 and angle measuring mechanism 6.

[0051] The angle support mechanism 7 includes a guide rail block 71 fixedly installed on one side of the mounting block 32. The guide rail block 71 has a sliding groove 72 inside. A sliding block 74 is slidably installed inside the sliding groove 72. The sliding block 74 has a support plate 73 on one side.

[0052] The guide rail block 71 is in the shape of a quarter of a semicircle, and the sliding block 74 can be fixed in position by a bolt.

[0053] It is worth noting that when welding a part, first rotate the sliding block 74 to slide inside the sliding groove 72, and the sliding block 74 will drive the support plate 73 to slide by changing the position of the support plate 73, so that the support plate 73 is attached to the surface of the part, and then the position of the sliding block 74 is fixed by a bolt. After adjusting the position of the support plate 73, the welding angle of the welding gun mechanism 2 will change when using the welding gun mechanism 2 to weld, and the surface of the support plate 73 contacting the part can provide a stable welding angle for the welding gun mechanism 2.

[0054] The welding gun mechanism 2 includes a shaft holder 26, which is rotatably mounted on the outer surface of the shaft rod 35. The upper end of the shaft holder 26 is provided with a support pipe holder 21, and the support pipe holder 21 is provided with an elastic arc plate 25 between the mounting block 32. One side of the support pipe holder 21 is provided with a gas storage chamber 23, and the other side of the support pipe holder 21 is provided with a welding gun 22.

[0055] It is worth noting that when using the welding gun 22 to weld a part, the welding gun 22 contacts the weld between the two parts to weld, and the elastic support provided by the elastic arc plate 25 is provided. The shaft holder 26 is rotatably mounted on the outer surface of the shaft rod 35, and the shaft holder 26 is used to support the support pipe holder 21.

[0056] The angle measuring mechanism 6 includes an arc block 61 fixedly installed on one side of the mounting block 32, and the inside of the arc block 61 is provided with a guide groove 62. The guide groove 62 is slidably installed with a support piece 63, and the support piece 63 is symmetrically provided with two installation openings 65 on one side. The inside of the two installation openings 65 is provided with an installation cover 64.

[0057] It is worth noting that after adjusting the welding angle of the welding gun 22 using the above-mentioned support plate 73, the user rotates the support piece 63 to slide inside the guide groove 62, and then fixes the position of the support piece 63 by a bolt. The adjusted support piece 63 needs to be attached to the surface of the part.

[0058] The inside of the installation cover 64 is rotatably installed with a ruler piece 67, the inside of the ruler piece 67 is provided with a roller 68, and the side of the ruler piece 67 is provided with a spring 66.

[0059] Wherein, when welding the crane slewing ring parts, the support plate 73 will be attached to the surface of the parts as the welding gun 22 moves, and when the angle or size of the parts changes due to thermal stress generated by welding, the ruler 67 inside the installation cover 64 can detect the angle or shape difference in real time, and the roller 68 inside the ruler 67 rotates on the surface of the parts, when the angle between the two welded parts becomes larger or deforms, the spring 66 pushes the ruler 67 to rotate inside the installation cover 64, and the shaft of the ruler 67 is provided with a shaft to support its rotation, and the surface of the ruler 67 is provided with a scale;

[0060] When the angle between the welded parts becomes larger, the support plate 73 is attached to the surface of the parts, and the support plate 63 is not attached to the surface of the parts, and at this time the ruler 67 will be pushed out of the installation cover 64 by the spring 66, at this time the welder can observe the angle difference between the two welded parts, and can adjust the welding position of the parts in time to prevent the size and angle of the parts from being different, causing the workpiece to be unable to be accurately assembled.

[0061] Wherein, the position of the support plate 73 is adjusted by sliding the sliding block 74, and fixed by using bolts, which can ensure that the support plate is tightly attached to the surface of the parts, not only providing stable support for the welding gun mechanism 2, but also allowing flexible adjustment of the angle of the welding gun according to the specific shape of the parts and the welding requirements, when the parts deform due to thermal stress generated by welding, the roller 68 inside the ruler 67 will roll on the surface of the parts, and as the angle between the two welded parts changes, the spring 66 will push the ruler 67 to rotate inside the installation cover 64, allowing the operator to observe the angle difference between the welded parts in real time.

[0062] The scale is set on the surface of the ruler 67, which facilitates the operator to accurately read the angle change value, and once the angle increases or deforms, the operator can immediately take measures to adjust the welding position or parameters to prevent assembly problems caused by size or angle differences.

[0063] Embodiment three, according to the preheating mechanism 3, the cleaning mechanism 4 and the ignition mechanism 5 provided in embodiment one, this embodiment provides further technical solutions of the preheating mechanism 3, the cleaning mechanism 4 and the ignition mechanism 5.

[0064] The preheating mechanism 3 comprises a mounting block 32, one side of the mounting block 32 is provided with a shaft 35, the inside of the shaft 35 is rotatably installed with a second support frame 34, the inside of the second support frame 34 is provided with a communication pipe 36, one end of the communication pipe 36 is provided with an air pipe 31, and one end of the air pipe 31 penetrates the mounting block 32, the second support frame 34 and the mounting block 32 are provided with a spring 33, and the second support frame 34 and the bottom of the mounting block 32 are provided with a tension spring 38.

[0065] It is worth mentioning that when the part is welded, the ignition mechanism 5 is in contact with the surface of the part. When the ignition mechanism 5 is in contact, the communication pipe 36 drives the second support frame 34 to rotate on the surface of the shaft 35, and the spring sheet 33 and the tension spring 38 provide elastic support, so that the ignition mechanism 5 can be attached to the surface of the part.

[0066] The cleaning mechanism 4 includes an engaging block 41 mounted on the outer surface of the communication pipe 36, and the bottom of the engaging block 41 is provided with a sanding sheet 42.

[0067] The sanding sheet 42 provided when the part is welded contacts the surface of the part, and the sanding sheet 42 can clean the impurities on the surface of the part.

[0068] The ignition mechanism 5 includes an air guide pipe 51 for guiding the flame to the direction, and the air guide pipe 51 is in the shape of the letter Y. A plurality of guide holes 55 are formed in the bottom of the outer surface of the air guide pipe 51 for preheating the welded part.

[0069] The air guide pipe 51 is installed in the inside of the communication pipe 36, and the inside of one side of the air guide pipe 51 is provided with two guide blocks 52, and the inside of the two guide blocks 52 is provided with air guide holes 53.

[0070] It is worth mentioning that when the gas is sprayed out of the communication pipe 36 and ignited in the air guide pipe 51, the flame will be sprayed out of the guide holes 55 formed in the bottom of the air guide pipe 51. The flame sprayed out of the guide holes 55 roasts the parts that need to be welded, and part of the flame will also be sprayed out of the air guide holes 53 formed in the inside of the guide blocks 52. The flame sprayed out of the air guide holes 53 roasts the parts that need to be welded, and the parts are preheated after roasting, which can eliminate the thermal stress of the parts during welding. The air guide pipe 51 provided in the shape of the letter Y can roast the splicing of two parts.

[0071] The air guide pipe 51 provided in the shape of the letter Y can roast the splicing of two parts.

[0072] The air guide pipe 51 provided in the shape of the letter Y can roast the splicing of two parts.

[0073] The preheating process can make the welding area reach a suitable working temperature, reduce the cooling rate, prevent hardening or embrittlement phenomenon caused by rapid cooling, thereby reducing the risk of welding cracks, and the partial flame is sprayed out through the air guide hole 53 opened in the inside of the guide block 52, further increasing the heating range, ensuring the temperature consistency of the materials around the welding area, and improving the overall welding efficiency and quality.

[0074] The application also provides a welding method of the crane turret part welding device.

[0075] S1, when using the welding device to weld the crane turret parts, first splice the two crane turret parts together, and then adjust the support position of the angle support mechanism 7 so that the welding gun mechanism 2 can weld the parts at a suitable angle;

[0076] S2, after adjusting the support position of the angle support mechanism 7, the user adjusts the measurement position of the angle measurement mechanism 6 again, so that the angle measurement mechanism 6 is attached to the surface of the part, and the angle measurement mechanism 6 set can detect whether the angle between the two welded parts changes during welding, and whether the part is deformed due to the influence of thermal stress during welding;

[0077] Wherein, by adjusting the position of the angle support mechanism 7, the welding gun mechanism 2 can approach the welding area at the optimal angle, improve the accuracy and consistency of welding, and thus improve the quality and strength of the weld.

[0078] The angle measurement mechanism 6 can also detect the deformation of the part caused by thermal stress during welding, so that the operator can take timely measures to correct or compensate for these changes during welding, thereby effectively avoiding size deviation or structural problems caused by thermal stress.

[0079] S3, when using the welding gun mechanism 2 to weld the parts, the preheating mechanism 3 set can cooperate with the guide mechanism 5 to preheat the parts to be welded, the guide mechanism 5 first heats the parts to reduce thermal stress, prevent the welded parts from deforming and being unable to splice with the main body, and the cleaning mechanism 4 set can clean the welding position before welding.

[0080] The preheating mechanism 3 can cooperate with the pilot mechanism 5 to preheat the parts to be welded, which can reduce the temperature difference between the welding area and the surrounding material, thereby reducing the thermal stress generated during welding. Proper preheating helps to reduce the cooling rate of the metal, prevent hardening and embrittlement caused by rapid cooling, and reduce the risk of welding cracks. The pilot mechanism 5 first heats the parts, further ensuring that the parts reach the appropriate working temperature before welding to reduce thermal stress, effectively preventing deformation caused by local overheating during welding, and reducing the probability of welding defects such as cracks and pores, enhancing the strength and reliability of the weld.

[0081] By preheating the entire welding area rather than just the weld itself, more uniform heat distribution can be achieved, allowing the welded parts to be better joined together, ensuring the integrity of the structure and dimensional accuracy. In addition, before welding, the cleaning mechanism cleans the welding position, removing surface oxidation, oil and other impurities, as any surface contaminants can affect the quality of the weld, possibly leading to defects such as pores and slag inclusions.

[0082] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application should be included in the protection scope of the present application.

Claims

1. A crane turret part welding device comprising a first support frame (1), characterized in that: The inside of the first support frame (1) is provided with a preheating mechanism (3) for preheating the parts, the inside of the preheating mechanism (3) is provided with a welding torch mechanism (2) for welding the parts, the outer surface of the preheating mechanism (3) is provided with a cleaning mechanism (4) for cleaning the surface of the parts, the inside of the preheating mechanism (3) is provided with a guide mechanism (5) for heat treatment of the welding part to reduce thermal stress, one side of the preheating mechanism (3) is provided with an angle support mechanism (7) for supporting the welding angle of the welding torch mechanism (2), and the other side of the preheating mechanism (3) is provided with an angle measuring mechanism (6) for detecting the size deformation of the parts during welding. The guide mechanism (5) comprises a gas guide pipe (51), the gas guide pipe (51) is used for guiding the flame direction, and the gas guide pipe (51) is in the shape of the letter Y, a plurality of guide holes (55) are formed in the bottom of the outer surface of the gas guide pipe (51) and used for preheating the welded parts. The preheating mechanism (3) comprises a mounting block (32), one side of the mounting block (32) is provided with a shaft rod (35), the inside of the shaft rod (35) is rotatably provided with a second support frame (34), the inside of the second support frame (34) is provided with a communication pipe (36), one end of the communication pipe (36) is provided with an air pipe (31), one end of the air pipe (31) penetrates through the mounting block (32), the second support frame (34) and the mounting block (32) are provided with elastic sheets (33), and the bottom of the second support frame (34) and the mounting block (32) are provided with a tension spring (38) in common. The gas guide pipe (51) is installed in the inside of the communication pipe (36), two guide blocks (52) are provided in the inside of one side of the gas guide pipe (51), and guide gas holes (53) are formed in the insides of the two guide blocks (52). The angle measuring mechanism (6) comprises an arc block (61), the arc block (61) is fixedly installed on one side of the mounting block (32), a guide groove (62) is formed in the inside of the arc block (61), a support sheet (63) is slidably installed in the inside of the guide groove (62), two installation openings (65) are symmetrically formed in one side of the support sheet (63), and installation covers (64) are arranged in the insides of the two installation openings (65). The inside of the installation cover (64) is rotatably provided with a ruler sheet (67), one side of the inside of the ruler sheet (67) is provided with a roller (68), and one side of the ruler sheet (67) is provided with a spring (66).

2. A crane turret component welding apparatus according to claim 1, characterised in that: The welding torch mechanism (2) comprises a shaft frame (26), the shaft frame (26) is rotatably installed on the outer surface of the shaft rod (35), the upper end of the shaft frame (26) is provided with a support pipe frame (21), the support pipe frame (21) and the mounting block (32) are provided with an elastic arc plate (25), one side of the support pipe frame (21) is provided with a gas storage chamber (23), and one side of the support pipe frame (21) is provided with a welding torch (22).

3. A crane turret component welding apparatus as claimed in claim 1, characterised in that: The cleaning mechanism (4) comprises a connecting block (41), the connecting block (41) is installed on the outer surface of the communication pipe (36), and the bottom of the connecting block (41) is provided with a sanding sheet (42).

4. A device for welding a slewing ring part of a crane according to claim 1, characterized in that: The angle supporting mechanism (7) comprises a guide rail block (71) fixedly installed on one side of the mounting block (32), an inner part of the guide rail block (71) is provided with a sliding groove (72), and the sliding groove (72) is slidably installed with a sliding block (74), and one side of the sliding block (74) is provided with a supporting plate (73).

5. A crane turret component welding apparatus as claimed in claim 4, characterised in that: The guide rail block (71) is in the shape of a quarter of a semicircle, and the sliding block (74) is fixed in position by bolts.

6. A welding method for a crane turntable component welding apparatus, which employs the crane turntable component welding apparatus according to any one of claims 1 to 5, characterized by The specific welding method is as follows: S1, when the welding device is used for welding the crane turntable parts, first, the two crane turntable parts are spliced together, then the supporting position of the angle supporting mechanism (7) is adjusted so that the welding gun mechanism (2) can weld the parts at a suitable angle; S2, after adjusting the supporting position of the angle supporting mechanism (7), the user adjusts the measuring position of the angle measuring mechanism (6) again, so that the angle measuring mechanism (6) is attached to the surface of the part, the angle measuring mechanism (6) can detect whether the angle between the two welded parts changes during welding, and whether the part is affected by thermal stress during welding; S3, when the welding gun mechanism (2) is used for welding the parts, the preheating mechanism (3) can cooperate with the guide mechanism (5) to preheat the parts to be welded, the guide mechanism (5) first heats the parts to reduce thermal stress, prevents the welded parts from deforming and being unable to splice with the main body, and the cleaning mechanism (4) can clean the welding position before welding.

Images