Accurate and rapid welding device for electromechanical equipment installation

Abstract

The invention relates to the technical field of welding equipment, and discloses a precise and rapid welding device for electromechanical equipment installation, which comprises a handle, a gun head, a gun nozzle and a gun tail which are respectively arranged at two ends of the gun head, a fixing sleeve arranged in the gun nozzle, a needle clamp arranged in the fixing sleeve, and a tungsten needle arranged in the needle clamp, the swing assembly is arranged in the handle and the gun head and specifically comprises a first rotating shaft arranged between the gun head and the fixing sleeve. According to the precise and rapid welding device for electromechanical equipment installation, by arranging the swing assembly, during welding, a third rotating shaft is rotated to control a fixing sleeve to start to swing, the fixing sleeve drives a needle tip of a tungsten needle to swing at an opening of a gun nozzle, and therefore the effect the same as that of a swing gun is achieved, and the welding quality is guaranteed; and meanwhile, in the process, a welding worker only needs to pay attention to stable gun moving, the requirements for skills and proficiency are reduced, the welding process is simpler and more portable, and rapid and accurate welding can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and in particular to a precise and fast welding device for installing electromechanical equipment. Background Art

[0002] Electromechanical equipment refers to equipment that is a combination of mechanical and electrical parts, and is widely used in manufacturing, construction, transportation and other fields. The processing technology of the mechanical part includes casting, milling, cutting, welding, etc. Among the welding processes, argon arc welding has the most extensive application due to its fast speed, deep penetration, good protection effect and few weld defects.

[0003] Argon arc welding equipment generally consists of three main components: a battery, a welding gun, and a welding needle. When working, the arc generated between the welding needle and the workpiece melts the workpiece to form a welding pool. At the same time, argon gas is ejected from the welding gun nozzle to form an inert gas protective layer around the arc, isolating the air (oxygen, nitrogen, etc.) from oxidizing and nitriding the molten pool and high-temperature metal, thereby obtaining a high-quality, high-purity weld.

[0004] The prior art has the following defects: During the welding process, in order to improve the welding quality and form "fish scale patterns", it is necessary to use the welding technique of "shaking the gun" or "cranking the handle". Specifically, the welding gun is placed on the weld, and the weld needle is shaken back and forth through the welding gun during the movement of the gun to form a wide molten pool with fish scale-like patterns in the molten pool. Since it takes a long time to practice proficiently to use "shaking the gun", the learning cost is high, and the gun is prone to slippage during shaking the welding gun, resulting in local deviation of the welding route and irregular molten pool, affecting the welding quality.

[0005] When there is a certain angle between the welding workpieces, the welding gun can be placed in contact with the angle of the workpieces to reduce the probability of gun slippage. However, if the welding workpieces are arranged in parallel, there is only a narrow gap between the two, which cannot provide good guidance for the welding gun and will increase the frequency of gun slippage. Summary of the invention

[0006] In view of the problem of gun sliding during welding in the prior art, a precise and fast welding device for installing electromechanical equipment is proposed.

[0007] The present application provides a precise and fast welding device for the installation of electromechanical equipment, the purpose of which is to reduce the probability of the occurrence of sliding guns.

[0008] The technical solution of the present invention is as follows: A precise and fast welding device for the installation of electromechanical equipment, including a handle and a gun head, a nozzle and a gun tail respectively arranged at both ends of the gun head, a fixed sleeve arranged inside the nozzle, a needle clamp arranged inside the fixed sleeve, a tungsten needle arranged inside the needle clamp, and a swing assembly arranged inside the handle and the gun head. The swing assembly specifically includes a first rotating shaft arranged between the gun head and the fixed sleeve, a first rocker arranged at one end of the fixed sleeve close to the gun tail, a second rocker arranged inside the handle, a second rotating shaft arranged between the second rocker and the handle, a driven rod arranged at the bottom of the second rotating shaft, a third rotating shaft arranged on the inner wall of the handle, an offset groove arranged at one end of the third rotating shaft away from the inner wall of the handle, a transmission rod arranged outside the turntable, and a connecting rod arranged between the transmission rod and the driven rod; One end of the second rocker close to the first rocker is provided with a "U" - shaped opening, and the "U" - shaped opening is sleeved outside the first rocker. The third rotating shaft extends out of the handle. The connecting rod is divided into left and right sections, and the two sections are rotatably connected.

[0009] Further, the swing assembly further includes a control handle arranged at one end of the third rotating shaft extending out of the handle, a control groove opened on the surface of the handle, a sliding groove opened on the side of the control handle, and a sliding rod arranged between the control groove and the sliding groove; The sliding groove covers the opening of the control groove, and the width of the control groove is greater than that of the sliding groove. The sliding rod is thread - connected in the sliding groove and slidably connected in the control groove.

[0010] Further, a triangular bayonet is arranged at one end of the control groove away from the third rotating shaft.

[0011] Further, both the second rocker and the turntable are arranged close to the inner wall contour of the handle.

[0012] Further, a guiding assembly is arranged outside the nozzle. The guiding assembly specifically includes a rotating sleeve arranged outside the nozzle, a rotating frame arranged outside the rotating sleeve, a strip - shaped frame arranged inside the rotating frame, a guiding needle arranged inside the strip - shaped frame, and a fixed shaft arranged between the strip - shaped frame and the guiding needle; The guiding needle rotates around the fixed shaft, and a damping washer is arranged between them. The tip of the guiding needle is located at the bottom end.

[0013] Further, when in use, the guiding needle is designed to be inclined, and the included angle between the guiding needle and the tungsten needle is an acute angle.

[0014] Further, the guiding assembly further includes a sliding sleeve arranged outside the strip - shaped frame and an offset groove arranged outside the guiding needle; The length of the offset groove is greater than the diameter of the fixed shaft, so that the fixed shaft slides in the offset groove. The vertical thickness of the strip - shaped frame is not less than the thickness of the guiding needle, and the length of the strip - shaped frame is greater than that of the guiding needle.

[0015] Furthermore, the guiding component further includes a card slot formed on the outer side of the guiding needle and a clamping platform arranged at the bottom of the sliding sleeve; The card slot is designed in a "stepped" shape, and the clamping platform protrudes downward and is clamped in the card slot.

[0016] Furthermore, the guiding component further includes a rotating slot formed on the outer side of the gun nozzle and a locking bolt inserted through the outer side of the rotating sleeve; The rotating slot is annular, and the locking bolt penetrates through the rotating sleeve and extends into the rotating slot.

[0017] Advantages of the present invention: 1. By providing a swinging component, during welding, by rotating the third rotating shaft to control the fixed sleeve to start swinging, the fixed sleeve drives the tip of the tungsten needle to swing at the opening of the gun nozzle, thereby achieving the same effect as a swing gun, ensuring the welding quality. At the same time, during this process, the welder only needs to pay attention to the stable movement of the gun, reducing the requirements for skills and proficiency, making the welding process more simple and portable, and enabling fast and precise welding.

[0018] 2. By providing a control handle, the third rotating shaft can be controlled to rotate, making the control more convenient. And by controlling the sliding rod to slide in the control groove and the sliding groove, the distance from the sliding rod to the third rotating shaft is adjusted, thereby adjusting the deflection angle of the control handle and also controlling the swinging amplitude of the tungsten needle. In this way, it is more convenient to use and the welding process is more stable.

[0019] 3. By providing a triangular bayonet at one end of the control groove far from the third rotating shaft, when the sliding rod is moved to this position, the control handle can be locked and the tungsten needle is also fixed. In this way, when a welder with high proficiency uses it, the swinging function of the tungsten needle can be selected to be turned off, and the welder can perform swing gun welding by hand feeling, providing more operation options for the device and a wider application range.

[0020] 4. By providing a guiding component, during welding, the guiding needle is rotated to the gun moving direction of the tungsten needle, then the inclined guiding needle is inserted into the gap between the welding workpieces, and then the gun is moved along these gaps, making the gun moving process more stable and the welding more precise.

[0021] 5. By providing a sliding sleeve, when the guiding needle is not needed, the guiding needle is rotated and stored in the strip-shaped frame, and then the sliding sleeve is pushed to lock the guiding needle in the strip-shaped frame. In this way, not only can the influence of the guiding needle on the subsequent welding work be avoided, but also the exposed guiding needle can be prevented from injuring the welder.

[0022] 6. By providing a card slot and a clamping platform, the inclination angle of the guiding needle can be adjusted by itself. After the adjustment is completed, the sliding sleeve is pushed so that the clamping platform is clamped into the card slot, making the applicable range of the device wider and meeting the needs of different people and different scenarios. Brief Description of the Drawings

[0023] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic diagram of the interior of the handle of the present invention; Figure 3 is a schematic diagram of the outer swing assembly of the handle of the present invention; Figure 4 is an exploded view of the outer swing assembly of the handle of the present invention; Figure 5 is a schematic diagram of the inner swing assembly of the handle of the present invention; Figure 6 is a schematic diagram of the inner swing assembly of the handle of the present invention after deflection; Figure 7 of the present invention Figure 5 is an enlarged view of the control handle; Figure 8 is an exploded view of the inner swing assembly of the handle of the present invention; Figure 9 is a front view of the present invention; Figure 10 is a cross-sectional view of the present invention; Figure 11 of the present invention Figure 10 is an enlarged view of the tip part; Figure 12 of the present invention Figure 10 is an enlarged view of the nozzle part; Figure 13 is a schematic diagram of the guiding assembly of the present invention; Figure 14 is a disassembling schematic diagram of the guiding assembly of the present invention; Figure 15 is an exploded view of the guiding assembly of the present invention; Figure 16 is a schematic diagram of the guiding assembly in a stored state of the present invention.

[0024] In the figures: 1. Handle; 2. Tip; 3. Nozzle; 4. Tail; 5. Fixed sleeve; 6. Needle clip; 7. Tungsten needle; 8. Swing assembly; 81. First rotating shaft; 82. First rocker; 83. Second rocker; 84. Second rotating shaft; 85. Driven rod; 86. Third rotating shaft; 87. Turntable; 88. Transmission rod; 89. Connecting rod; 810. Control handle; 811. Control groove; 812. Sliding groove; 813. Sliding rod; 9. Guiding assembly; 91. Rotating sleeve; 92. Rotating frame; 93. Strip-shaped frame; 94. Guiding needle; 95. Fixed shaft; 96. Sliding sleeve; 97. Offset groove; 98. Card slot; 99. Card table; 910. Rotating groove; 911. Locking bolt. Detailed Description of the Invention

[0025] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings of the specification.

[0026] Example 1. Referring to Figures 1-11 , which is the first embodiment of the present invention, provides a precise and rapid welding device for the installation of electromechanical equipment, including a handle 1 and a gun head 2, a nozzle 3 and a gun tail 4 respectively arranged at both ends of the gun head 2, a fixed sleeve 5 arranged inside the nozzle 3, a needle clamp 6 arranged inside the fixed sleeve 5, a tungsten needle 7 arranged inside the needle clamp 6, and further including a swing assembly 8 arranged inside the handle 1 and the gun head 2. The swing assembly 8 specifically includes a first rotating shaft 81 arranged between the gun head 2 and the fixed sleeve 5, a first rocker 82 arranged at one end of the fixed sleeve 5 close to the gun tail 4, a second rocker 83 arranged inside the handle 1, a second rotating shaft 84 arranged between the second rocker 83 and the handle 1, a driven rod 85 arranged at the bottom of the second rotating shaft 84, a third rotating shaft 86 arranged on the inner wall of the handle 1, an offset groove 97 arranged at one end of the third rotating shaft 86 away from the inner wall of the handle 1, a transmission rod 88 arranged outside the turntable 87, and a connecting rod 89 arranged between the transmission rod 88 and the driven rod 85.

[0027] Specifically, the handle 1 is assembled by two halves on the left and right, and one side of the handle 1 and the gun head 2 are integrally welded. The nozzle 3 and the gun tail 4 are both threadedly connected to the gun head 2. The needle clamp 6 is slidably inserted into the fixed sleeve 5, and the tungsten needle 7 is slidably inserted into the needle clamp 6, and the tungsten needle 7 extends out from one end of the nozzle 3 away from the gun head 2. The first rotating shaft 81 penetrates into the fixed sleeve 5 from the outside of the gun head 2, enabling the fixed sleeve 5 to rotate around the first rotating shaft 81. The first rocker 82 is fixedly connected to the fixed sleeve 5. One end of the second rocker 83 close to the first rocker 82 is provided with a "U" - shaped opening, and the "U" - shaped opening is sleeved outside the first rocker 82. The extension line of the second rocker 83 penetrates through the central axes of the first rocker 82 and the needle clamp 6. The second rotating shaft 84 penetrates through the second rocker 83 and is threadedly connected to the handle 1, enabling the second rocker 83 to rotate around the second rotating shaft 84. The driven rod 85 is fixedly connected to the second rocker 83. The third rotating shaft 86 is rotatably connected to the handle 1. The turntable 87 is fixedly connected to the third rotating shaft 86 through bolts, and the transmission ratio can be adjusted by replacing turntables 87 with different diameters. The transmission rod 88 is fixedly connected to the turntable 87. The third rotating shaft 86 extends out of the handle 1. Both ends of the connecting rod 89 are slidably sleeved outside the driven rod 85 and the transmission rod 88. A damping pad is arranged between the connecting rod 89 and the driven rod 85, and a buffer soft pad is arranged between the connecting rod 89 and the transmission rod 88. The connecting rod 89 is divided into two sections on the left and right, and the two sections are rotatably connected. The second rocker 83 and the turntable 87 are both arranged close to the inner wall contour of the handle 1, reserving more space for other pipelines and also avoiding the influence of other pipelines on the transmission of the swing assembly 8.

[0028] By setting the swing component 8, during welding, the fixed sleeve 5 starts to swing by rotating the third rotating shaft 86. The fixed sleeve 5 drives the tip of the tungsten needle 7 to swing at the opening of the nozzle 3, thus achieving the same effect as gun swinging, ensuring the welding quality. At the same time, during this process, the welder only needs to pay attention to the stable movement of the gun, reducing the requirements for skills and proficiency, making the welding process more simple and portable, and enabling fast and precise welding.

[0029] The swing component 8 further includes a control handle 810 arranged at one end of the third rotating shaft 86 extending out of the handle 1, a control groove 811 opened on the surface of the handle 1, a sliding groove 812 opened on the side surface of the control handle 810, and a sliding rod 813 arranged between the control groove 811 and the sliding groove 812.

[0030] Specifically, the control handle 810 is sleeved outside the third rotating shaft 86, and the control handle 810 rotates around the third rotating shaft 86. One end of the control handle 810 away from the third rotating shaft 86 is provided with a thumb pressing area. During use, the welder's thumb presses here to adjust the movement of the control handle 810. The sliding groove 812 covers the opening of the control groove 811, and the width of the control groove 811 is greater than that of the sliding groove 812. The sliding rod 813 is threadedly connected to the sliding groove 812 and slidably connected to the control groove 811. One end of the sliding rod 813 away from the control groove 811 extends out of the sliding groove 812, and the extended part is provided with friction lines for easy rotation. Digital scales are engraved around the sliding groove 812 to display the maximum deflection angle at the corresponding position.

[0031] By setting the control handle 810, the third rotating shaft 86 can be controlled by the control handle 810, making the control more convenient. And by controlling the sliding of the sliding rod 813 in the control groove 811 and the sliding groove 812, the distance between the sliding rod 813 and the third rotating shaft 86 is adjusted, thereby adjusting the deflection angle of the control handle 810 and also controlling the swinging amplitude of the tungsten needle 7. In this way, it is more convenient to use and the welding process is more stable.

[0032] Specifically, a triangular bayonet is arranged at one end of the control groove 811 away from the third rotating shaft 86. In this way, when the sliding rod 813 is moved here, the control handle 810 can be locked, and the tungsten needle 7 is also fixed. In this way, when a welder with high proficiency uses it, the swinging function of the tungsten needle 7 can be selected to be turned off, and the welder can achieve gun-swinging welding by hand feeling, making the operation options of the device more and the application range wider.

[0033] Example 2, refer to Figure 1 、 Figures 10-16, which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a guiding component 9 is provided on the outer side of the nozzle 3. The guiding component 9 specifically includes a rotating sleeve 91 provided on the outer side of the nozzle 3, a rotating frame 92 provided on the outer side of the rotating sleeve 91, a strip-shaped frame 93 provided on the inner side of the rotating frame 92, a guiding needle 94 provided on the inner side of the strip-shaped frame 93, and a fixing shaft 95 provided between the strip-shaped frame 93 and the guiding needle 94; the guiding component 9 further includes a rotating groove 910 opened on the outer side of the nozzle 3, and a locking bolt 911 inserted through the outer side of the rotating sleeve 91.

[0034] Specifically, the rotating sleeve 91 is sleeved on the outer side of the nozzle 3, and the rotating sleeve 91 can rotate on the outer side of the nozzle 3. The rotating frame 92 is welded to the outer side of the rotating sleeve 91. The strip-shaped frame 93 is rotatably connected to the rotating frame 92, and a damping rotating shaft is provided at the connection between the two. The guiding needle 94 rotates around the fixing shaft 95, and a damping washer is provided between the two. The tip of the guiding needle 94 is located at the bottom end and can be inserted into the gap between the welding workpieces; when the guiding needle 94 is used, it is designed to be inclined, and the angle between the guiding needle 94 and the tungsten needle 7 is an acute angle. In this way, the guiding needle 94 can slide more smoothly in the gap between the welding workpieces, avoiding jamming; the rotating groove 910 is annular, and the locking bolt 911 penetrates through the rotating sleeve 91 and extends into the rotating groove 910.

[0035] By setting the guiding component 9, during welding, the guiding needle 94 is rotated to the welding direction of the tungsten needle 7, and then the inclined guiding needle 94 is inserted into the gap between the welding workpieces, and then the welding gun is moved along these gaps, so that the welding gun moving process is more stable and the welding is more accurate.

[0036] The guiding component 9 further includes a sliding sleeve 96 provided on the outer side of the strip-shaped frame 93, and an offset groove 97 provided on the outer side of the guiding needle 94.

[0037] Specifically, the sliding sleeve 96 is slidably sleeved on the outer side of the strip-shaped frame 93. The main contour of the sliding sleeve 96 is L-shaped. The length of the offset groove 97 is greater than the diameter of the fixing shaft 95, so that the fixing shaft 95 can slide in the offset groove 97. The upper and lower thickness of the strip-shaped frame 93 is not less than the thickness of the guiding needle 94, and the length of the strip-shaped frame 93 is greater than that of the guiding needle 94, so that the guiding needle 94 can be completely received inside the strip-shaped frame 93.

[0038] By setting the sliding sleeve 96, when the guiding needle 94 is not needed, the guiding needle 94 is rotated and received inside the strip-shaped frame 93, and then the sliding sleeve 96 is pushed to lock the guiding needle 94 inside the strip-shaped frame 93. In this way, not only can the guiding needle 94 be prevented from affecting the subsequent welding work, but also the exposed guiding needle 94 can be prevented from injuring the welding master.

[0039] The guiding component 9 further includes a card slot 98 opened on the outer side of the guiding needle 94, and a clamping platform 99 provided at the bottom of the sliding sleeve 96.

[0040] Specifically, the clamping platform 99 is arranged at the bottom edge of the sliding sleeve 96 and integrally formed with the sliding sleeve 96. The clamping groove 98 is designed in a "stepped" shape, and the clamping platform 99 protrudes downward and is clamped in the clamping groove 98.

[0041] By providing the clamping groove 98 and the clamping platform 99, the inclination angle of the guiding needle 94 can be adjusted automatically. After the adjustment is completed, push the sliding sleeve 96 so that the clamping platform 99 is clamped into the clamping groove 98, which can make the applicable range of the device wider and meet the needs of different people and different scenarios.

[0042] Combining Embodiments 1-2, the working principle of the precision and fast welding device for electromechanical equipment installation of the present invention is as follows: Before welding, first rotate the locking bolt 911 to loosen the rotating sleeve 91, then rotate the rotating sleeve 91 to move the bar-shaped frame 93 to the gun-running direction of the tungsten needle 7, and then rotate the locking bolt 911 to fix the rotating sleeve 91 outside the nozzle 3; push the sliding sleeve 96 towards the rotating frame 92, then push the guiding needle 94 along the bar-shaped frame 93 away from the rotating frame 92, and then rotate the guiding needle 94 by more than ninety degrees to form an acute angle with the tungsten needle 7. After adjusting to the appropriate angle, push the sliding sleeve 96 towards the guiding needle 94 to make the clamping platform 99 clamped into the clamping groove 98 and lock the guiding needle 94, thus completing the adjustment of the guiding assembly 9.

[0043] Adjust the position of the sliding rod 813 according to the required welding width. When the required welding width is narrow, first rotate the sliding rod 813 to take it out of the sliding groove 812, then move it towards the third rotating shaft 86, and then rotate the sliding rod 813 and insert it into the sliding groove 812 and make it insert into the control groove 811. In this way, the swinging range of the control handle 810 becomes smaller, and the swinging range of the tungsten needle 7 also becomes smaller, and the welding width becomes narrower. If the required welding width is wide, the reverse operation is performed. If the welder has proficient welding skills, he can choose to move the sliding rod 813 into the triangular bayonet at one end of the control groove 811. In this way, the sliding rod 813 cannot shake in the control groove 811, the control handle 810 cannot move, and the tungsten needle 7 is synchronously locked, and the welder can weld completely by his own skills.

[0044] During welding, insert the guiding needle 94 into the gap between the welding workpieces. Then, adjust the angle of the equipment so that the tungsten needle 7 touches between the welding tools at 7 o'clock. The tungsten needle 7 releases an electric arc to melt the workpieces, forming a molten pool on the gap between the welding workpieces. While the tungsten needle 7 touches the workpiece, start to slowly move the welding gun, and press the thumb on the surface of the control handle 810. Use the thumb to control the up-and-down swing of the control handle 810. During this process, the sliding rod 813 shakes in the control groove 811 and stops after touching the inner wall of the control groove 811. The third rotating shaft 86 also rotates following the control handle 810 and drives the turntable 87 to rotate. The turntable 87 drives the transmission rod 88 to deflect to one side. The transmission rod 88 pulls or pushes the driven rod 85 through the connecting rod 89. During this process, one end of the connecting rod 89 rotates based on the central axis of the driven rod 85, the other end of the connecting rod 89 also deflects based on the transmission rod 88, and the two ends of the connecting rod 89 also rotate relative to each other. The process is as Figures 5-6 shown. The second rocker 83 swings based on the second rotating shaft 84. When swinging, it controls the fixed sleeve 5 to swing based on the first rotating shaft 81 through the first rocker 82. When the fixed sleeve 5 swings, it controls the tungsten needle 7 to swing through the needle clamp 6. The swinging tungsten needle 7 forms a wide molten pool between the welding tools. Keep moving the welding gun like this until the welding work is completed.

[0045] After completion, lock the control handle 810 using the sliding rod 813. Then, rotate the guiding needle 94 to make it parallel to the bar-shaped frame 93, and push the guiding needle 94 towards the rotating frame 92. The fixed shaft 95 slides in the offset groove 97, and the guiding needle 94 is also completely received into the bar-shaped frame 93. Finally, push the sliding sleeve 96 in the direction away from the rotating frame 92 to make it move to the outside of the guiding needle 94 and lock it in the bar-shaped frame 93.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A precise and rapid welding device for the installation of electromechanical equipment, comprising a handle (1) and a gun head (2), a nozzle (3) and a gun tail (4) respectively arranged at both ends of the gun head (2), a fixing sleeve (5) arranged inside the nozzle (3), a needle clamp (6) arranged inside the fixing sleeve (5), and a tungsten needle (7) arranged inside the needle clamp (6), characterized in that: It further includes a swing assembly (8) disposed inside the handle (1) and the gun head (2). The swing assembly (8) specifically includes a first rotating shaft (81) disposed between the gun head (2) and the fixed sleeve (5), a first rocker (82) disposed at one end of the fixed sleeve (5) close to the gun tail (4), a second rocker (83) disposed inside the handle (1), a second rotating shaft (84) disposed between the second rocker (83) and the handle (1), a driven rod (85) disposed at the bottom of the second rotating shaft (84), a third rotating shaft (86) disposed on the inner wall of the handle (1), an offset groove (97) disposed at one end of the third rotating shaft (86) away from the inner wall of the handle (1), a transmission rod (88) disposed outside the turntable (87), and a connecting rod (89) disposed between the transmission rod (88) and the driven rod (85); One end of the second rocker (83) close to the first rocker (82) is provided with a "U" - shaped opening, and the "U" - shaped opening is sleeved outside the first rocker (82). The third rotating shaft (86) extends out of the handle (1). The connecting rod (89) is divided into left and right sections, and the two sections are rotatably connected.

2. The precision and rapid welding device for electromechanical equipment installation according to claim 1, wherein: The swing assembly (8) further includes a control handle (810) disposed at one end of the third rotating shaft (86) extending out of the handle (1), a control groove (811) opened on the surface of the handle (1), a sliding groove (812) opened on the side surface of the control handle (810), and a sliding rod (813) disposed between the control groove (811) and the sliding groove (812); The sliding groove (812) covers the opening of the control groove (811), and the width of the control groove (811) is greater than that of the sliding groove (812). The sliding rod (813) is thread - connected in the sliding groove (812) and slidably connected in the control groove (811).

3. The precision and fast welding device for electromechanical equipment installation according to claim 2, wherein: A triangular bayonet is disposed at one end of the control groove (811) away from the third rotating shaft (86).

4. The precision and rapid welding device for the installation of electromechanical equipment according to claim 1, characterized in that: Both the second rocker (83) and the turntable (87) are disposed close to the inner wall contour of the handle (1).

5. The precision and fast welding device for the installation of electromechanical equipment according to claim 1, characterized in that: A guiding assembly (9) is disposed outside the nozzle (3). The guiding assembly (9) specifically includes a rotating sleeve (91) disposed outside the nozzle (3), a rotating frame (92) disposed outside the rotating sleeve (91), a strip - shaped frame (93) disposed inside the rotating frame (92), a guiding needle (94) disposed inside the strip - shaped frame (93), and a fixed shaft (95) disposed between the strip - shaped frame (93) and the guiding needle (94); The guiding needle (94) rotates around the fixed shaft (95), and a damping washer is disposed between them. The tip of the guiding needle (94) is located at the bottom end.

6. The precision and fast welding device for electromechanical equipment installation according to claim 5, characterized in that: When in use, the guiding needle (94) is designed to be inclined, and the included angle between the guiding needle (94) and the tungsten needle (7) is an acute angle.

7. The precision and rapid welding device for electromechanical equipment installation according to claim 5, characterized in that: The guiding assembly (9) further includes a sliding sleeve (96) disposed outside the strip - shaped frame (93) and an offset groove (97) disposed outside the guiding needle (94); The length of the offset slot (97) is greater than the diameter of the fixed shaft (95), such that the fixed shaft (95) slides within the offset slot (97). The vertical thickness of the strip-shaped frame (93) is not less than the thickness of the guide pin (94), and the length of the strip-shaped frame (93) is greater than that of the guide pin (94).

8. The precision and fast welding device for electromechanical equipment installation according to claim 7, characterized in that: The guide assembly (9) further includes a card slot (98) formed on the outer side of the guide pin (94), and a clamping platform (99) provided at the bottom of the sliding sleeve (96). The card slot (98) is designed in a "stepped" shape, and the clamping platform (99) protrudes downward and is clamped within the card slot (98).

9. The precision and rapid welding device for electromechanical equipment installation according to claim 5, characterized in that: The guide assembly (9) further includes a rotation slot (910) formed on the outer side of the nozzle (3), and a locking bolt (911) inserted through the outer side of the rotating sleeve (91). The rotation slot (910) is annular, and the locking bolt (911) passes through the rotating sleeve (91) and extends into the rotation slot (910).

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