A ring main unit welding system

Abstract

This invention relates to a ring main unit welding system, comprising a transverse side plate loading unit, a longitudinal side plate loading unit, and a side plate seam welding unit. The transverse side plate loading unit includes a base with a belt conveyor mounted on it. Multiple clamping devices are fixed to the belt conveyor. The longitudinal side plate loading unit includes two suction devices, each comprising a support platform and a plate mounted on the support platform via a rotating mechanism. A cylinder is fixed to the plate, and a vacuum suction cup is fixed to the piston rod of the cylinder via an adapter plate. The side plate seam welding unit includes a support plate with two liftable frames mounted on it. Each frame includes two symmetrically distributed gantry frames, the tops of which are fixed by a crossbeam. Liftable outer and inner welding devices are correspondingly mounted on the two vertical bars of each gantry frame. The outer and inner welding devices are at the same height and move synchronously. This system has the advantages of simple structure, convenient operation, safety, reliability, and strong practicality.

Description

Technical Field

[0001] This invention relates to a ring main unit, specifically to a ring main unit welding system capable of simultaneously welding the inner and outer sides of the cabinet side panel joints. Background Technology

[0002] In the field of power transmission and distribution, ring main units (RNBs) are mainly used to control internal switches, fuses, and other devices. When an electric arc or overcurrent short circuit occurs, the internal insulating gas can extinguish the arc, thus ensuring the stable operation of the power system. During the manufacturing process of RNBs, the front, rear, left, and right side plates are typically welded together to form the various parts or the overall structure of the RNB. For example, patent application CN118218838A discloses a dual-station welding device for RNB gas boxes, specifically including a first station. The upper end of the first station is equipped with a placement mechanism and a support plate for placing steel plates. The bottom of the support plate is fixedly connected to the first station. The upper end of the first station is equipped with a self-cleaning full weld inspection mechanism for detecting welding quality. While this technical solution allows for dual-station welding of RNBs, the welding positions are all on the outside of the cabinet, preventing simultaneous welding of the inside and outside of the weld seam. This can easily generate stress and affect the welding quality. Summary of the Invention

[0003] The purpose of this invention is to provide a ring main unit welding system, which has the advantages of simple structure, convenient operation, safety and reliability, and strong practicality, and can effectively improve welding quality and welding efficiency.

[0004] To address the aforementioned problems in the existing technology, this invention provides a ring main unit welding system, comprising a transverse side plate loading unit, a longitudinal side plate loading unit, and a side plate seam welding unit. The transverse side plate loading unit includes a base with a transverse belt conveyor mounted on it. Multiple clamping devices are fixed on the belt conveyor, spaced apart transversely and symmetrically distributed longitudinally. These clamping devices are used to clamp and fix the transverse side plates. The longitudinal side plate loading unit includes two adsorption devices, symmetrically arranged on opposite sides of the belt conveyor. Each adsorption device includes a support platform and a mounting mechanism that is connected to the platform. A support platform has a plate on it, on which a cylinder is fixed. The piston rod of the cylinder is fixed to a transition plate that slides with the platform. A vacuum suction cup is fixed to the side of the transition plate away from the cylinder. The vacuum suction cup is used to adsorb and fix the longitudinal side plate. The side plate splicing welding unit includes a support plate set on the upper side of the belt conveyor. Two frames that are symmetrically distributed in the longitudinal direction and can be raised and lowered are installed on the support plate. The frames include two gantry frames that are symmetrically distributed in the transverse direction. The tops of the two gantry frames are fixedly connected by a crossbeam. A raised and lowerable outer welding device and an inner welding device are correspondingly installed on the two vertical rods of the gantry frames. The outer welding device and the inner welding device are at the same height and are raised and lowered synchronously.

[0005] Furthermore, in the present invention, a ring main unit welding system is provided, wherein the belt conveyor includes two side beams fixed at intervals on the base, conveyor rollers are installed at intervals between the two side beams, a conveyor belt is sleeved on the outer side of all the conveyor rollers, and the outermost conveyor roller is connected to a first servo motor, which is fixed on the side beam.

[0006] Furthermore, the present invention provides a ring main unit welding system, wherein the clamping device includes a support block fixed on a conveyor belt and a positioning component fixed on the support block. The positioning component has two convex clamping components installed through a T-slot. Both ends of the positioning component are respectively threaded with screws. The inner end of the screw is rotatably connected to the corresponding clamping component. The outer end of the screw is fixed with a rotating operating head. The positioning component has a scale line on one side of the T-slot.

[0007] Furthermore, the present invention provides a ring main unit welding system, wherein the rotating mechanism includes a second servo motor fixed on a support platform and a rotating shaft mounted on the support platform via bearings. A drive gear is fixed on the output shaft of the second servo motor, and a driven gear meshing with the drive gear is fixed at the lower end of the rotating shaft. The platform is fixed on the upper end of the rotating shaft.

[0008] Furthermore, in the ring main unit welding system of the present invention, the platform is provided with a sliding groove, and a slider is provided in the sliding groove for sliding cooperation with it. The adapter plate is fixed on the slider, and the cylinder is fixed to the platform by a plurality of mounting bolts.

[0009] Furthermore, in the ring main unit welding system of the present invention, a first guide groove and a second guide groove are respectively provided on the inner sidewalls of the two vertical rods of the gantry frame. A first lead screw and a second lead screw are respectively installed in the first guide groove and the second guide groove through bearings. A first nut that slides with the first guide groove is installed on the first lead screw through a thread. The upper end of the first lead screw extends from the top of the gantry frame and is fixed with a first synchronous pulley. A second nut that slides with the second guide groove is installed on the second lead screw through a thread. The upper end of the second lead screw extends from the top of the gantry frame and is fixed with a second synchronous pulley. A synchronous belt is sleeved between the second synchronous pulley and the first synchronous pulley. A third servo motor that is fixed on the gantry frame and connected to the second lead screw is provided on the upper side of the second synchronous pulley. The outer welding device and the inner welding device are respectively fixed on the first nut and the second nut.

[0010] Furthermore, the present invention provides a ring main unit welding system, wherein the external welding device includes an external support plate fixed on a first nut, an external support is installed on the external support plate through a first elongated hole facing the internal welding device and a matching fixing bolt, an external laser welding head is fixed on the external support, an external fan is also fixed on the external support plate, the input end of the external fan is connected to an external suction pipe located above the external laser welding head and facing the external weld, and the output end of the external fan is connected to an external air pipe located below the external laser welding head and facing the external weld.

[0011] Furthermore, the present invention provides a ring main unit welding system, wherein the inner welding device includes an inner support plate fixed on a second nut, the inner support plate is provided with an inclined second elongated hole, and an inner support is installed through the second elongated hole and a matching connecting bolt, an inner laser welding head is fixed on the inner support, and an inner fan is also fixed on the inner support plate, the input end of the inner fan is connected to an inner suction pipe located above the inner laser welding head and facing the inner weld, and the output end of the inner fan is connected to an inner outlet pipe located below the inner laser welding head and facing the inner weld.

[0012] Furthermore, in the ring main unit welding system of the present invention, guide strips are respectively provided on the outer sides of the two vertical rods of the gantry frame, and a square hole through which the gantry frame passes on the support plate. A limiting groove that slides with the guide strip is provided on the side wall of the square hole.

[0013] Furthermore, in the ring main unit welding system of the present invention, a lifting rack is fixed in the middle of the crossbeam, and a through hole is provided on the support plate at the position corresponding to the lifting rack. A fourth servo motor is also installed on the support plate through a motor adapter, and a drive gear is installed on the output shaft of the fourth servo motor, which meshes with the lifting rack.

[0014] Compared with existing technologies, the ring main unit welding system of the present invention has the following advantages: The present invention sets up a transverse side plate loading unit, a longitudinal side plate loading unit, and a side plate seam welding unit. The transverse side plate loading unit is equipped with a base, and a transverse belt conveyor is mounted on the base. Multiple clamping devices are fixed on the belt conveyor, and these clamping devices are spaced apart transversely and symmetrically distributed longitudinally. The clamping devices are used to clamp and fix the transverse side plates. The longitudinal side plate loading unit is equipped with two adsorption devices, which are symmetrically distributed on both sides of the longitudinal direction of the belt conveyor. The adsorption devices are mounted on a support platform and are installed on the support platform via a rotating mechanism. On the platform, a cylinder is fixed on the platform. An adapter plate that slides on the platform is fixed on the piston rod of the cylinder. A vacuum suction cup is fixed on the side of the adapter plate away from the cylinder. The vacuum suction cup is used to adsorb and fix the longitudinal side plate. The side plate seam welding unit is set on a support plate above the belt conveyor. Two vertically symmetrical and liftable frames are installed on the support plate. The frames are set on two horizontally symmetrical gantry frames. The tops of the two gantry frames are fixedly connected by a crossbeam. Liftable outer welding devices and inner welding devices are installed on the two vertical rods of the gantry frames. The outer welding devices and inner welding devices are at the same height and move up and down synchronously. This constitutes a simple, easy-to-operate, safe, reliable, and highly practical ring main unit welding system. In practical applications, firstly, two horizontal side panels are fixed at intervals on a belt conveyor using clamping devices, and then the belt conveyor moves the two horizontal side panels to a position between two adsorption devices. Next, each of the two adsorption devices uses a vacuum suction cup to adsorb a vertical side panel, and a rotating mechanism and cylinder move the vertical side panel to a position where it is spliced ​​with the horizontal side panel. Then, the two frames are lowered to a set position, where the four gantry frames correspond one-to-one with the four side panel splicing points, and the two vertical rods of the gantry frames are positioned on the inner and outer sides of the vertical side panels. Subsequently, the outer welding device and the inner welding device are started and move synchronously from top to bottom to weld the inner and outer seams of each side panel splicing point. After welding is completed, the outer welding device, the inner welding device, and the frames are reset, the adsorption devices are detached from the vertical side panels, and the welded cabinet is moved away from the welding station by the belt conveyor. Then, the clamping devices can be released and the cabinet can be removed. This invention improves the ease of loading transverse side plates by equipping the transverse side plate loading unit with a belt conveyor and a clamping device, and improves the ease of loading longitudinal side plates by equipping the longitudinal side plate loading unit with a rotating mechanism, a cylinder, and a vacuum suction cup. By equipping the side plate seam welding unit with a gantry frame, an outer welding device, and an inner welding device, and by placing the outer welding device and the inner welding device at the same height and lifting them synchronously, stress can be effectively avoided between the side plates during welding, thus improving welding quality and welding efficiency.

[0015] The following detailed description of a ring main unit welding system according to the present invention, with reference to the accompanying drawings, illustrates the specific embodiments. Attached Figure Description

[0016] Figure 1 This is a front view of a ring main unit welding system according to the present invention;

[0017] Figure 2 This is an isometric view of a ring main unit welding system according to the present invention;

[0018] Figure 3 for Figure 2 A magnified view of a portion of position A in the middle;

[0019] Figure 4 This is a front view of the adsorption device in this invention;

[0020] Figure 5 Axiometric view of the adsorption device in this invention Figure 1 ;

[0021] Figure 6 Axiometric view of the adsorption device in this invention Figure 2 ;

[0022] Figure 7 This is a left view of the side plate seam welding unit in this invention;

[0023] Figure 8 This is an isometric view of the side plate seam welding unit in this invention;

[0024] Figure 9 for Figure 8 A magnified view of a portion of position B in the middle;

[0025] Figure 10 for Figure 8 A magnified view of the area at position C in the middle;

[0026] Figure 11 for Figure 8 A magnified view of the area at position D in the middle;

[0027] Figure 12 This is a diagram illustrating the working state of a ring main unit welding system according to the present invention. Detailed Implementation

[0028] First, it should be noted that the directional terms such as up, down, left, right, front, and back used in this invention are merely descriptions based on the accompanying drawings for ease of understanding, and are not intended to limit the technical solution or the scope of protection claimed in this invention.

[0029] like Figures 1 to 12The embodiment of the ring main unit welding system of the present invention shown includes a transverse side plate loading unit, a longitudinal side plate loading unit, and a side plate seam welding unit. The transverse side plate loading unit is equipped with a base 1, on which a transverse belt conveyor 2 is mounted. Multiple clamping devices 3 are fixed on the belt conveyor 2, and are spaced apart transversely and symmetrically distributed longitudinally. The clamping devices 3 are used to clamp and fix the transverse side plates, i.e., the transverse side plates are clamped and fixed by the symmetrically distributed clamping devices 3. The longitudinal side plate loading unit is equipped with two adsorption devices 4, which are symmetrically distributed on both sides of the longitudinal direction of the belt conveyor 2. Each adsorption device 4 is equipped with a support platform 41 and a plate 42 mounted on the support platform 41 via a rotating mechanism. A cylinder 43 is fixed on the plate 42, and a transition plate 44 that slides with the plate 42 is fixed on the piston rod of the cylinder 43. A vacuum suction cup 45 is fixed on the side of the transition plate 44 away from the cylinder 43, and the vacuum suction cup 45 is used to adsorb and fix the longitudinal side plates. The side panel seam welding unit is set on the support plate 5 above the belt conveyor 2. Two frames 6 that are symmetrically distributed in the longitudinal direction and can be raised and lowered are installed on the support plate 5. The frames 6 are set on two gantry frames 61 that are symmetrically distributed in the transverse direction. The tops of the two gantry frames 61 are fixedly connected by crossbeams 62. A raised and lowerable outer welding device 7 and an inner welding device 8 are installed on the two vertical bars of the gantry frames 61 respectively. The outer welding device 7 and the inner welding device 8 are at the same height and are raised and lowered synchronously.

[0030] The above setup constitutes a simple, easy-to-operate, safe, reliable, and highly practical ring main unit welding system. In practical applications, firstly, two transverse side plates 100 are fixed at intervals to the belt conveyor 2 using clamping devices 3, and then the belt conveyor 2 moves the two transverse side plates 100 to a position between two adsorption devices 4; then, the two adsorption devices 4 each adsorb a longitudinal side plate 200 using vacuum suction cups 45, and the longitudinal side plate 200 is moved to a position where it is spliced ​​with the transverse side plates 100 using a rotating mechanism and cylinder 43; next, the two frames 6 are lowered to a set position, wherein four gantry frames 61 (two frames, each...) The two gantry frames (61 and 62) correspond one-to-one with the four side panel splicing points. The two vertical rods of the gantry frame 61 are located on the inner and outer sides of the longitudinal side panel 200. Then, the outer welding device 7 and the inner welding device 8 are started and moved synchronously from top to bottom to weld the inner and outer seams of each side panel splicing point. After welding is completed, the outer welding device 7, the inner welding device 8 and the frame 6 are reset, the adsorption device 4 is detached from the longitudinal side panel 200, and the welded cabinet is moved away from the welding station by the belt conveyor. Then, the clamping device 4 can be released and the cabinet can be taken away. This invention improves the ease of loading the transverse side plate 100 by equipping the transverse side plate loading unit with a belt conveyor 2 and a clamping device 3, and improves the ease of loading the longitudinal side plate 200 by equipping the longitudinal side plate loading unit with a rotating mechanism, a cylinder 43 and a vacuum suction cup 45. By equipping the side plate seam welding unit with a gantry frame 61, an outer welding device 7 and an inner welding device 8, and by placing the outer welding device 7 and the inner welding device 8 at the same height and lifting them synchronously, stress between the side plates during welding can be effectively avoided, thereby improving welding quality and welding efficiency. It should be noted that, in order to ensure the stability and reliability of the structure and operation, the base 1 is usually fixed on the ground, and the support platform 41 and the bracket plate 5 are also fixed on the ground by multiple columns. In order to improve production efficiency and ensure the continuity of the process, the side plate loading, seam welding and cabinet retrieval are usually carried out in sequence. The area between the two clamping devices 4 of the belt conveyor 2 is the welding station, the area in front of the belt conveyor 2 of the welding station is the transverse side plate loading station, the area behind the belt conveyor 2 of the welding station is the cabinet retrieval station, and the area where the two adsorption devices 4 are opposite to the belt conveyor 2 is the longitudinal side plate loading station.

[0031] In a specific embodiment, the present invention employs the following structure for the belt conveyor 2: two side beams 21 are fixed at intervals on the base 1, conveyor rollers 22 are installed at intervals between the two side beams 21, and a conveyor belt 23 is fitted around the outside of all the conveyor rollers 22. The outermost conveyor roller 22 is connected to a first servo motor 24, and the first servo motor 24 is fixed on the side beam 21. This belt conveyor 2 features a simple structure, convenient control, and stable operation. In a specific embodiment, the present invention employs the following configuration for the clamping device 3: a support block 31 is fixed on the conveyor belt 23, a positioning member 32 is fixed on the support block 31, two convex clamping members 33 are installed in the positioning member 32 through a T-slot, screw rods 34 are threaded onto both ends of the positioning member 32, the inner end of the screw rod 34 is rotatably connected to the corresponding clamping member 33, a rotating operating head 341 is fixed to the outer end of the screw rod 34, and a scale line 35 is provided on one side of the T-slot of the positioning member 32. The clamping device 3 in this configuration features a simple structure, convenient adjustment, and stable clamping. By rotating the operating head 341 to move the clamping members 33 in opposite directions, the distance between them can be increased to accommodate the transverse side plate. By rotating the operating head 341 to move the clamping members 33 in opposite directions, the distance between them can be decreased to clamp the transverse side plate. By using two or more symmetrically distributed clamping devices 3 to clamp and fix the transverse side plate, it is possible to effectively prevent the transverse side plate from shaking during transportation and welding, thus ensuring welding accuracy and reliability. By setting the scale line 35, the clamping and fixing position of the transverse side plate can be precisely controlled to adapt to different transverse side plate thicknesses, thereby enhancing welding accuracy and reliability.

[0032] In a specific embodiment, the rotating mechanism of the present invention is configured as follows: a second servo motor 46 is fixed on a support platform 41, and a rotating shaft 47 is mounted on it via bearings. A drive gear 461 is fixed on the output shaft of the second servo motor 46, and a driven gear 471 meshing with the drive gear 461 is fixed at the lower end of the rotating shaft 47. The platform 42 is fixed to the upper end of the rotating shaft 47. This rotating mechanism features a simple structure, stable support, and smooth operation. The second servo motor 46 and gear transmission can drive the rotating shaft 47 and the platform 42 to rotate, thereby causing the cylinder 43 and the vacuum suction cup 45 to reverse direction, facilitating the movement of the longitudinal side plate from the loading station to the welding station. As a specific structure for the sliding engagement between the adapter plate 44 and the platform 42, the present invention provides a groove 421 on the platform 42, and a slider 48 that slides within the groove 421 is provided for sliding engagement with it. The adapter plate 44 is fixed to the slider 48. This configuration features a simple structure, easy processing, and smooth operation. In practical applications, to facilitate disassembly and assembly, the present invention typically uses multiple mounting bolts to fix the cylinder 43 to the platform 42.

[0033] In a specific implementation, to enable the outer welding device 7 and the inner welding device 8 to rise and fall synchronously, the present invention provides a first guide groove and a second guide groove on the inner sidewalls of the two vertical rods of the gantry frame 61. A first lead screw 63 and a second lead screw 64 are installed in the first guide groove and the second guide groove respectively through bearings. The first lead screw 63 is threaded with a first nut 631 that slides in cooperation with the first guide groove. The upper end of the first lead screw 63 extends from the top of the gantry frame 61 and is fixed with a first synchronous pulley 632. The second lead screw 64 is threaded with a second nut 641 that slides in cooperation with the second guide groove. The upper end of the second lead screw 64 extends from the top of the gantry frame 61 and is fixed with a second synchronous pulley 642. A synchronous belt 65 is sleeved between the second synchronous pulley 642 and the first synchronous pulley 632. A third servo motor 66 is fixed on the upper side of the second synchronous pulley 642 and connected to the second lead screw 64. This setup features a compact structure, smooth operation, and good synchronization. The third servo motor 66 drives the second synchronous pulley 642 and the second lead screw 64 to rotate. Under the transmission action of the second synchronous pulley 642, the synchronous belt 65, and the first synchronous pulley 632, the first lead screw 63 rotates synchronously with the second lead screw 64, driving the second nut 641 and the first nut 631 to slide synchronously along their respective guide grooves. Initially, the second nut 641 and the first nut 631 are set at the same height, and the outer welding device 7 and the inner welding device 8 are correspondingly fixed to the first nut 631 and the second nut 641, thus achieving synchronous lifting and lowering of the outer welding device 7 and the inner welding device 8.

[0034] In a specific embodiment, the present invention employs the following structure for the external welding device 7: an external support plate 71 is fixed to a first nut 631; an external support 72 is mounted on the external support plate 71 via a first elongated hole 711 facing the internal welding device 8 and a matching fixing bolt; an external laser welding head 73 is fixed to the external support 72; and an external fan 74 is fixed to the external support plate 71. The input end of the external fan 74 is connected to an external suction pipe 741 located above the external laser welding head 73 and facing the external weld seam; the output end of the external fan 74 is connected to an external exhaust pipe 742 located below the external laser welding head 73 and facing the external weld seam. The external welding device 7 features a simple structure, strong adaptability, and good welding effect. By setting the first elongated hole 711, the positions of the external support 72 and the external laser welding head 73 can be easily and quickly adjusted to adapt to different thicknesses of the longitudinal side plates, thus improving welding accuracy. By setting the external fan 74, air is drawn in during welding, and the heat from the weld is drawn into the external fan 74 through the external suction pipe 741. The hot air is then blown to the unwelded weld area through the external air outlet pipe 742. This allows the weld to cool down quickly after welding, improving welding quality. On the other hand, it allows the heat generated by welding to be transferred to the weld position before welding for preheating, reducing the temperature difference between the welded workpieces, reducing welding stress, and helping to avoid welding cracks. Similarly, the present invention employs the following structure for the inner welding device 8: an inner support plate 81 is fixed on a second nut 641; an inclined second elongated hole 811 is provided on the inner support plate 81; an inner support 82 is installed through the second elongated hole 811 and matching connecting bolts; an inner laser welding head 83 is fixed on the inner support 82; and an inner fan 84 is fixed on the inner support plate 81. The input end of the inner fan 84 is connected to an inner suction pipe 841 located above the inner laser welding head 83 and facing the inner weld seam; the output end of the inner fan 84 is connected to an inner exhaust pipe 842 located below the inner laser welding head 83 and facing the inner weld seam. The internal welding device 8 in this configuration also features a simple structure, strong adaptability, and good welding effect. By setting an inclined second elongated hole 811, the internal laser welding head 83 can be aligned with the inner weld seam, improving welding accuracy. By setting an internal fan 84, air is drawn in during welding, and the heat from the weld seam after welding is drawn into the internal fan 84 through the internal suction pipe 841, and the hot air is blown to the unwelded weld seam through the internal exhaust pipe 842. On the one hand, the weld seam after welding can be cooled down quickly, improving welding quality. On the other hand, the heat generated by welding can be transferred to the weld seam position before welding for preheating, reducing the temperature difference between the welded workpieces and reducing welding stress, which helps to avoid welding cracks.

[0035] In a specific embodiment, to ensure smooth lifting and lowering of the frame 6, guide strips 611 are respectively provided on the outer sides of the two vertical rods of the gantry 61. A square hole 51 is provided on the support plate 5 through which the gantry 61 passes, and a limiting groove that slides with the guide strip 611 is provided on the side wall of the square hole 51. As a specific structure for driving the frame 6 to lift and lower, a lifting rack 67 is fixed in the middle of the crossbeam 62. A through hole is provided on the support plate 5 at a position corresponding to the lifting rack 67. A fourth servo motor 68 is mounted on the support plate 5 through a motor adapter, and a drive gear 69 that meshes with the lifting rack 67 is mounted on the output shaft of the fourth servo motor 68.

[0036] Practical application has shown that the ring main unit welding system provided by this invention can produce the following beneficial effects: 1. Through the synchronous operation of the external welding device and the internal welding device, the splicing joints of the two transverse side plates (front side plate and rear side plate) and the two longitudinal side plates (left side plate and right side plate) of the ring main unit can be welded simultaneously from the inside and outside, eliminating the stress between them and improving the welding quality. In addition, during the welding process, the internal and external fans and the corresponding air inlet and outlet pipes are used to make the heat at the weld seam after welding dissipate quickly, so that the weld seam is preheated before welding, reducing the temperature difference between the welded workpieces in the welding area. On the one hand, the welding stress is reduced, and on the other hand, the welding strain rate is reduced, which helps to avoid the generation of welding cracks. 2. The transverse side plate loading unit can quickly move two transverse side plates (front and rear side plates) to the welding station, and the longitudinal side plate loading unit can quickly move two longitudinal side plates (left and right side plates) to the welding station and position them between the two transverse side plates, improving loading accuracy and efficiency. The four welds are simultaneously welded by four sets of external and internal welding devices, further eliminating stress and further improving welding quality and efficiency.

[0037] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications made by those skilled in the art based on the technical solutions of the present invention without departing from the design concept of the present invention should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A ring main unit welding system comprising a transverse side plate feeding unit, a longitudinal side plate feeding unit, and a side plate joint welding unit, characterized in that, The transverse side plate feeding unit comprises a base (1), a transverse belt conveying device (2) is arranged on the base (1), a plurality of clamping devices (3) are fixed on the belt conveying device (2), the plurality of clamping devices (3) are distributed in the transverse direction and symmetrically distributed in the longitudinal direction, the clamping devices (3) are used for clamping and fixing the transverse side plate, the longitudinal side plate feeding unit comprises two adsorption devices (4), the two adsorption devices (4) are correspondingly arranged on the longitudinal sides of the belt conveying device (2) and symmetrically distributed, the adsorption device (4) comprises a supporting table (41) and a table plate (42) installed on the supporting table (41) through a rotating mechanism, a gas cylinder (43) is fixed on the table plate (42), a connecting plate (44) which is in sliding fit with the table plate (42) is fixed on the piston rod of the gas cylinder (43), a vacuum chuck (45) is fixed on the side of the connecting plate (44) away from the gas cylinder (43), and the vacuum chuck (45) is used for adsorbing and fixing the longitudinal side plate, the side plate joint welding unit comprises a support plate (5) arranged on the upper side of the belt conveying device (2), two frames (6) which are symmetrically distributed in the longitudinal direction and can be lifted are installed on the support plate (5), the frame (6) comprises two gantries (61) which are symmetrically distributed in the transverse direction, the top portions of the two gantries (61) are fixedly connected through a cross beam (62), and a outer welding device (7) and an inner welding device (8) which can be lifted are correspondingly installed on the two vertical rods of the gantry (61), the outer welding device (7) and the inner welding device (8) are at the same height and are synchronously lifted.

2. The ring main unit welding system according to claim 1, characterized in that, The belt conveying device (2) comprises two edge beams (21) which are fixed on the base (1) at intervals, conveying rollers (22) which are distributed at intervals are installed between the two edge beams (21), the outer sides of all the conveying rollers (22) are collectively sleeved with a conveying belt (23), the outermost conveying roller (22) is connected with a first servo motor (24), and the first servo motor (24) is fixed on the edge beam (21).

3. The ring main unit welding system according to claim 2, characterized in that, The clamping device (3) comprises a supporting block (31) fixed on the conveying belt (23) and a positioning piece (32) fixed on the supporting block (31), two convex-shaped clamping pieces (33) are installed in the positioning piece (32) through T-shaped grooves, threads are installed on the two ends of the positioning piece (32) respectively, the threads are fixed with lead screws (34), the inner ends of the lead screws (34) are rotationally connected with the corresponding clamping pieces (33), the outer ends of the lead screws (34) are fixed with rotary operation heads (341), and the positioning piece (32) is provided with a scale line (35) on one side of the T-shaped groove.

4. The ring main unit welding system according to claim 1, characterized in that, The rotating mechanism comprises a second servo motor (46) fixed on the supporting table (41) and a rotating shaft (47) installed on the supporting table (41) through a bearing, a driving gear (461) is fixed on the shaft of the second servo motor (46), a driven gear (471) which is in mesh with the driving gear (461) is fixed on the lower end of the rotating shaft (47), and the table plate (42) is fixed on the upper end of the rotating shaft (47).

5. The ring main unit welding system according to claim 4, characterized in that, The sliding groove (421) is provided on the base plate (42), the sliding groove (421) is provided with the sliding block (48) matched with it, the adapter plate (44) is fixed on the sliding block (48), and the air cylinder (43) is fixed on the base plate (42) through a plurality of mounting bolts.

6. The ring main unit welding system according to claim 1, characterized in that, Corresponding first guide grooves and second guide grooves are arranged on the inner walls of the two vertical rods of the gantry (61), the first guide grooves and the second guide grooves are correspondingly provided with the first lead screw (63) and the second lead screw (64) through bearings, the first nut (631) matched with the first guide groove is installed on the first lead screw (63) through threads, the upper end of the first lead screw (63) extends from the top of the gantry (61) and is fixed with the first synchronous wheel (632), the second nut (641) matched with the second guide groove is installed on the second lead screw (64) through threads, the upper end of the second lead screw (64) extends from the top of the gantry (61) and is fixed with the second synchronous wheel (642), the synchronous belt (65) is sleeved between the second synchronous wheel (642) and the first synchronous wheel (632), the third servo motor (66) connected with the second lead screw (64) and fixed on the gantry (61) is arranged on the upper side of the second synchronous wheel (642), and the outer welding device (7) and the inner welding device (8) are correspondingly fixed on the first nut (631) and the second nut (641).

7. The ring main unit welding system according to claim 6, characterized in that The outer welding device (7) comprises an outer support plate (71) fixed on the first nut (631), an outer support (72) installed on the outer support plate (71) through a first long hole (711) facing the inner welding device (8) and a matching fixing bolt, an outer laser welding head (73) fixed on the outer support (72), and an outer fan (74) fixed on the outer support plate (71), wherein an outer air suction pipe (741) above the outer laser welding head (73) and facing the outer weld is connected to the input end of the outer fan (74), and an outer air outlet pipe (742) below the outer laser welding head (73) and facing the outer weld is connected to the output end of the outer fan (74).

8. The ring main unit welding system according to claim 6, characterized in that, The inner welding device (8) comprises an inner support plate (81) fixed on the second nut (641), an inclined second long hole (811) arranged on the inner support plate (81), an inner support (82) installed on the inner support plate (81) through the second long hole (811) and a matching connecting bolt, an inner laser welding head (83) fixed on the inner support (82), and an inner fan (84) fixed on the inner support plate (81), wherein an inner air suction pipe (841) above the inner laser welding head (83) and facing the inner weld is connected to the input end of the inner fan (84), and an inner air outlet pipe (842) below the inner laser welding head (83) and facing the inner weld is connected to the output end of the inner fan (84).

9. The ring main unit welding system according to claim 6, characterized in that, The outer sides of the two vertical rods of the gantry (61) are respectively provided with guide strips (611), and the bracket plate (5) is provided with a square hole (51) through which the gantry (61) passes, and the side wall of the square hole (51) is provided with a limiting groove matched with the guide strips (611).

10. The ring main unit welding system of claim 6, wherein, The middle part of the crossbeam (62) is fixed with a lifting rack (67), the support plate (5) is provided with a through hole at the position corresponding to the lifting rack (67), and a fourth servo motor (68) is installed on the support plate (5) through a motor adapter, a driving gear (69) is installed on the output shaft of the fourth servo motor (68), and the driving gear (69) is engaged with the lifting rack (67).

Images