Transformer oil tank weld beading removing device

Abstract

The invention relates to a transformer oil tank weld beading removing device which comprises a fixing frame, a variable-pitch functional assembly is arranged on the fixing frame, self-adaptive grinding mechanisms distributed in an array mode are arranged at the lower end of the variable-pitch functional assembly, each self-adaptive grinding mechanism comprises a telescopic bin and a telescopic rod, and the telescopic bins are arranged at the lower end of the variable-pitch functional assembly; the telescopic rod is slidably connected into the telescopic bin through a tension spring, and distance adjusting grinding assemblies are arranged at the end of the telescopic bin and the end of the telescopic rod and can automatically adapt to the distance between the cooling fins. According to the self-adaptive grinding mechanism, the welding area between the cooling fins on the two sides can be ground according to the distance self-adaptive change of the cooling fins, and grinding and cleaning of weld beading are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, and in particular relates to a device for removing weld nodules of a transformer oil tank. Background Art

[0002] The transformer will generate a lot of heat during operation. If this heat is not dissipated in time, the internal temperature of the transformer will rise, which will affect the performance and life of the transformer. The function of the heat sink is to help the transformer dissipate heat effectively and prevent overheating and damage to the equipment. The heat sink increases the surface area and promotes air flow, thereby helping the transformer to dissipate heat in time and keep the internal temperature within a safe range.

[0003] The connection method of transformer heat sink to the oil tank varies according to the production process. The heat sink is arranged in an array on the side wall of the oil tank. At present, the heat sink of the common transformer oil tank is mainly fixed to the oil tank by welding. The spacing of heat sinks on transformers of different specifications is also different. According to the national standard, the spacing of transformer heat sinks should not be less than 45mm. Therefore, the spacing of heat sinks on transformer oil tanks varies greatly and is relatively narrow.

[0004] The narrow layout of the heat sink is not conducive to the welding operation of the heat sink, and it greatly hinders the grinding treatment of the weld nodules after welding. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a transformer oil tank weld nodule removal device, which at least partially solves the above problem.

[0006] The technical solution adopted by the present invention is as follows: A transformer oil tank weld nodule removal device proposed by the present invention comprises a fixing frame, which can be fixed on the upper wall of the transformer oil tank, and the fixing method can be adjusted according to the actual working conditions on site; Furthermore, a variable distance function component is provided on the fixed frame, and an array-distributed adaptive grinding mechanism is provided at the lower end of the variable distance function component. The variable distance function component can adjust the spacing between adjacent adaptive grinding mechanisms, so that each adaptive grinding mechanism is sequentially embedded between adjacent heat sinks, so that the adaptive grinding mechanism can grind the weld nodules between the heat sinks on both sides.

[0007] Furthermore, the variable pitch functional component includes a variable pitch slider and a variable pitch screw. The variable pitch sliders are arranged in multiple groups and slide in the side wall of the fixed frame. The number of sliders is adapted to the number of adaptive grinding mechanisms. The variable pitch screw penetrates the side wall of the fixed frame and is threadedly connected to the variable pitch slider. The variable pitch screw is provided with a distance-changing thread. When the variable pitch screw is rotated, the distance between the variable pitch sliders changes synchronously, and the change amount of the distance of adjacent variable pitch sliders is the same. Furthermore, a nut is rotatably provided in an area outside the side wall of the fixed frame of the variable pitch slider, a reciprocating screw is provided at the center of the nut, and the adaptive grinding mechanism is provided at the lower end of the reciprocating screw. When the nut rotates, the height of the nut remains unchanged, and the reciprocating screw rotates and reciprocates up and down, thereby driving the adaptive grinding mechanism to reciprocate up and down, thereby reciprocatingly grinding the weld nodules in the heat sink interval area; Furthermore, a conveyor chain is arranged around the outer side of the nut, one end of the conveyor chain is connected to a motor, and the motor drives the conveyor chain to rotate, thereby driving all the nuts to rotate; Furthermore, in order to adapt to the distance adjustment of the variable pitch functional component and keep the conveyor chain in a tensioned state at all times, a tensioning wheel is slidably provided at the end of the fixed frame away from the motor, and a tensioning spring is connected between the tensioning wheel and the fixed frame. The tensioning spring always pulls the tensioning wheel toward the end away from the variable pitch slider, thereby keeping the conveyor chain in a tensioned state at all times.

[0008] Further, the adaptive grinding mechanism includes a telescopic bin and a telescopic rod, the telescopic bin is arranged at the lower end of the reciprocating screw in the pitch-changing functional component, the telescopic rod is slidably connected to the telescopic bin through a compression spring, and the compression spring always pushes the telescopic rod in a direction away from the telescopic bin, and the ends of the telescopic bin and the telescopic rod are both provided with a pitch-adjusting grinding component, which can automatically adapt to the spacing between adjacent heat sinks and grind the weld nodules in this area; Furthermore, a connecting frame is provided on the side wall of the adjustable distance grinding assembly on the telescopic rod, an active roller is rotatably provided on the connecting frame, and a grinding belt surrounding the adjustable distance grinding assembly is provided on the outer side of the active roller; Furthermore, in order to make the grinding belt rotate continuously and thus remove the weld nodules, a belt is connected between the active roller and the reciprocating screw. When the reciprocating screw rotates, the belt drives the active roller to rotate, thereby driving the grinding belt to rotate.

[0009] Furthermore, the adjustable distance grinding assembly includes a retractable square box, a grinding bracket one and a grinding bracket two, the retractable square boxes on both sides are respectively fixed to the ends of the telescopic bin and the telescopic rod, the grinding bracket one is slidably arranged at the middle and lower part of the retractable square box through a lower spring, and the grinding bracket two is slidably arranged at the middle and upper part of the retractable square box through an upper spring, the sliding directions of the grinding bracket one and the grinding bracket two are opposite, and grinding rollers are rotatably provided on the grinding frames one and two, and the grinding belts are arranged around the grinding rollers and the active rollers.

[0010] Furthermore, in order to facilitate the insertion of the distance-adjusting grinding assembly between adjacent heat sinks and prevent the heat sinks from damaging the grinding belt, the first grinding bracket is provided with an introduction cone, the second grinding bracket is provided with an introduction cone, and the lower end of the introduction cone is provided with an introduction inclined plate, and the outermost edge of the introduction inclined plate is flush with the grinding belt. When the introduction inclined plate is squeezed between the heat sinks, the spacing between the two sides of the grinding belt is adapted to the spacing between the heat sinks, thereby avoiding interference between the grinding belt and the end of the heat sink; Furthermore, the structure of the second introduction cone is the same as that of the first introduction cone, and the bottom heights of the two are consistent. In order to connect the first grinding bracket and the second grinding bracket at different positions, the second introduction cone and the first introduction cone differ only in connection size. Furthermore, in order to prevent the grinding belt from slipping during operation, a support plate is provided above the inlet inclined plate, and the support plate is arranged at the lower end of the grinding belt. The support plate provides support force for the grinding belt, thereby preventing the grinding belt from detaching from the grinding roller and the active roller.

[0011] Furthermore, a connecting groove is provided on the telescopic bin, and the lower end of the reciprocating screw is rotatably arranged in the connecting groove. When the reciprocating screw rotates, the reciprocating screw can push the adaptive grinding mechanism to move downward without causing the adaptive grinding mechanism to rotate accordingly.

[0012] The beneficial effects achieved by the present invention using the above structure are as follows: Grinding bracket 1 and grinding bracket 2 on the adaptive grinding mechanism can adaptively expand and contract according to the spacing of the heat sinks. The spacing difference is adjusted by the upper spring and the lower spring, so that the grinding roller fits the welding parts of the heat sinks on both sides, so that the grinding belt contacts the welding area to achieve grinding and cleaning of the weld nodules. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure of the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a structural schematic diagram of the adaptive grinding mechanism; Figure 4 It is a schematic diagram of the structure of the adaptive grinding mechanism after the grinding belt is removed; Figure 5 for Figure 4 A cross-sectional view of Figure 6 This is a schematic diagram of the structure of the adjustable distance grinding assembly.

[0014] Among them, 1. fixed frame, 2. adaptive grinding mechanism, 3. variable pitch slider, 4. nut, 5. reciprocating screw, 6. conveyor chain, 7. tensioning wheel, 8. tensioning spring, 9. variable pitch screw, 10. motor, 11. telescopic bin, 12. telescopic rod, 13. adjustable pitch grinding assembly, 14. connecting frame, 15. active roller, 16. grinding belt, 17. shrinking square box, 18. grinding bracket one, 19. grinding bracket two, 20. introduction cone two, 21. introduction cone one, 22. grinding roller, 23. compression spring, 24. connecting groove, 25. lower spring, 26. upper spring, 27. introduction inclined plate, 28. support plate, 29. belt.

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0018] like Figure 1 and Figure 2 As shown, a transformer oil tank weld nodule removal device proposed by the present invention comprises a fixing frame 1, which can be fixed on the upper wall of the transformer oil tank. The fixing method can be adjusted according to the actual working conditions on site. In this embodiment, it can be fixed by bolts or a pressure plate; A variable pitch functional component is provided on the fixed frame 1, and an array-distributed adaptive grinding mechanism 2 is provided at the lower end of the variable pitch functional component. The variable pitch functional component can adjust the spacing between adjacent adaptive grinding mechanisms 2, so that each adaptive grinding mechanism 2 is sequentially embedded between adjacent heat sinks, so that the adaptive grinding mechanism 2 can grind the weld nodules between the heat sinks on both sides.

[0019] The pitch-changing functional component includes a pitch-changing slider 3 and a pitch-changing screw 9. The pitch-changing sliders 3 are arranged in multiple groups and slide in the side wall of the fixed frame 1. The number of the sliders matches the number of the adaptive grinding mechanism 2. The pitch-changing screw 9 penetrates the side wall of the fixed frame 1 and is threadedly connected to the pitch-changing slider 3. The pitch-changing screw 9 is provided with a thread for changing the distance. When the pitch-changing screw 9 is rotated, the distance between the pitch-changing sliders 3 changes synchronously, and the distance change amount of adjacent pitch-changing sliders 3 is the same. The variable pitch slider 3 is rotatably provided with a nut 4 in the area outside the side wall of the fixing frame 1, and a reciprocating screw 5 is provided at the center of the nut 4. The adaptive grinding mechanism 2 is provided at the lower end of the reciprocating screw 5. When the nut 4 rotates, the height of the nut 4 remains unchanged, and the reciprocating screw 5 rotates and reciprocates up and down, thereby driving the adaptive grinding mechanism 2 to reciprocate up and down, thereby reciprocatingly grinding the weld nodules in the interval area of ​​the heat sink; A conveyor chain 6 is arranged around the outside of the nut 4, and a motor 10 is connected to one end of the conveyor chain 6. The motor 10 drives the conveyor chain 6 to rotate, thereby driving all the nuts 4 to rotate. In order to adapt to the distance adjustment of the variable pitch functional component and keep the conveyor chain 6 in a tensioned state at all times, a tensioning wheel 7 is provided on the end of the fixed frame 1 away from the motor 10 for sliding movement. A tensioning spring 8 is connected between the tensioning wheel 7 and the fixed frame 1. The tensioning spring 8 always pulls the tensioning wheel 7 toward the end away from the variable pitch slider 3, thereby keeping the conveyor chain 6 in a tensioned state at all times.

[0020] like Figure 3-Figure 6 As shown, the adaptive grinding mechanism 2 includes a telescopic bin 11 and a telescopic rod 12. The telescopic bin 11 is arranged at the lower end of the reciprocating screw 5 in the pitch-changing functional component. The telescopic rod 12 is slidably connected to the telescopic bin 11 through a compression spring 23. The compression spring 23 always pushes the telescopic rod 12 in a direction away from the telescopic bin 11. The ends of the telescopic bin 11 and the telescopic rod 12 are both provided with a pitch-adjusting grinding assembly 13. The pitch-adjusting grinding assembly 13 can automatically adapt to the spacing between adjacent heat sinks and grind the weld nodules in this area. A connecting frame 14 is provided on the side wall of the adjustable pitch grinding assembly 13 on the telescopic rod 12, and an active roller 15 is rotatably provided on the connecting frame 14. A grinding belt 16 that surrounds the adjustable pitch grinding assembly 13 is provided on the outer side of the active roller 15; in order to make the grinding belt 16 rotate continuously to remove the weld nodules, a belt 29 is connected between the active roller 15 and the reciprocating screw 5. When the reciprocating screw 5 rotates, the active roller 15 is driven to rotate through the belt 29, thereby driving the grinding belt 16 to rotate.

[0021] The adjustable distance grinding assembly 13 includes a retractable square box 17, a grinding bracket 18 and a grinding bracket 2 19. The retractable square boxes 17 on both sides are respectively fixed to the ends of the telescopic bin 11 and the telescopic rod 12. The grinding bracket 1 18 is slidably arranged in the middle and lower part of the retractable square box 17 through a lower spring 25. The grinding bracket 2 19 is slidably arranged in the middle and upper part of the retractable square box 17 through an upper spring 26. The sliding directions of the grinding bracket 1 18 and the grinding bracket 2 19 are opposite. Grinding rollers 22 are rotatably provided on the grinding frames 1 and 2, and the grinding belt 16 is arranged around the grinding roller 22 and the active roller 15.

[0022] Reference Figure 3 and Figure 6 As shown, in order to facilitate the insertion of the distance-adjusting grinding assembly 13 between adjacent heat sinks and prevent the heat sinks from damaging the grinding belt 16, a first guide cone 21 is provided on the grinding bracket 18, and a second guide cone 20 is provided on the grinding bracket 19. The lower end of the second guide cone 20 is provided with an introduction ramp 27, and the outermost edge of the introduction ramp 27 is flush with the grinding belt 16. When the introduction ramp 27 is squeezed between the heat sinks, the spacing between the two sides of the grinding belt 16 is adapted to the spacing between the heat sinks, thereby avoiding interference between the grinding belt 16 and the end of the heat sink; The structure of the second introduction cone 20 and the first introduction cone 21 is the same, and the bottom heights of the two are consistent. In order to connect the grinding bracket 18 and the second grinding bracket 19 at different positions, the second introduction cone 20 and the first introduction cone 21 only differ in the connection size; In order to prevent the grinding belt 16 from slipping during operation, a support plate 28 is provided above the inlet inclined plate 27. The support plate 28 is arranged at the lower end of the grinding belt 16. The support plate 28 provides support force for the grinding belt 16, thereby preventing the grinding belt 16 from detaching from the grinding roller 22 and the active roller 15.

[0023] Reference Figure 3 and Figure 5 As shown, a connecting groove 24 is provided on the telescopic bin 11, and the lower end of the reciprocating screw 5 is rotatably arranged in the connecting groove 24. When the reciprocating screw 5 rotates, the reciprocating screw 5 can push the adaptive grinding mechanism 2 to move downward without causing the adaptive grinding mechanism 2 to rotate accordingly.

[0024] The specific working principle is as follows: According to the working conditions on site, a suitable method is selected to fix the fixing frame 1 on the transformer oil tank. In this embodiment, bolts or pressure plates can be selected to fix it, and the fixing position is adjusted so that the grinding belt 16 fits the side wall of the transformer oil tank (i.e., the side where the heat sink is currently welded).

[0025] Then rotate the pitch-adjusting screw. When the pitch-adjusting screw rotates, it will drive the pitch-changing slider 3 to slide horizontally along the side wall of the fixed frame 1, so that the spacing between adjacent pitch-changing sliders 3 is the same. When the spacing between adjacent pitch-changing sliders 3 is the same as the spacing between adjacent heat sinks, stop rotating the pitch-changing screw 9 (the pitch-changing screw 9 can be locked by a buckle, not shown in the accompanying drawings). At this time, each adaptive grinding mechanism 2 can be inserted into the gap between the heat sinks below in the vertical direction.

[0026] When adjusting the spacing of the variable pitch slider 3, the nut 4 and the reciprocating screw 5 on the variable pitch slider 3 slide synchronously, and the length of the conveyor chain 6 around the nut 4 changes synchronously. The difference caused by the length change will be compensated by the tensioning wheel 7. The tensioning wheel 7 moves adaptively under the action of the tensioning spring 8, thereby ensuring that the conveyor chain 6 is always in a tensioned state.

[0027] Start the motor 10, the motor 10 drives the conveyor chain 6 to rotate, the conveyor chain 6 drives the nut 4 to rotate, and when the nut 4 rotates, it also drives the reciprocating screw 5 to rotate. Because the nut 4 will not be displaced in the height direction, the reciprocating screw 5 will move in the height direction. When the motor 10 reverses, the reciprocating screw 5 will move in the opposite direction, so that the reciprocating screw 5 reciprocates up and down relative to the nut 4.

[0028] When the reciprocating screw 5 moves downward, it will also push the telescopic bin 11 to move downward. The guide cone 1 21 and the guide cone 20 below the telescopic bin 11 will first contact the end of the heat sink to change the operating width of the adjustable grinding assembly 13 to prevent the grinding belt 16 from being damaged.

[0029] When the inlet inclined plates 27 of the inlet cone 1 21 and the inlet cone 20 come into contact with the heat sink, the heat sink applies a thrust to the inlet inclined plates 27, which compresses the upper spring 26 and the lower spring 25, causing the grinding bracket 1 18 and the grinding bracket 2 19 to shrink inward until the outermost ends of the inlet inclined plates 27 on both sides come into contact with the side walls of the heat sink. At this time, the working width of the grinding belts 16 wrapped around the grinding rollers 22 on both sides is adapted to the spacing between the heat sinks.

[0030] When the grinding bracket 18 and the grinding bracket 2 19 are retracted inward, the tension between the grinding belts 16 surrounding the outside is reduced, the pressure on the telescopic rod 12 is reduced, and the telescopic rod 12 will slide away from the telescopic bin 11 under the elastic force of the compression spring 23, thereby tightening the grinding belt 16 again.

[0031] When the reciprocating screw 5 continues to move downward, the grinding roller 22 and the grinding belt 16 on the grinding roller 22 can enter the area between the heat sinks for subsequent grinding operations.

[0032] While the reciprocating screw 5 moves up and down, it also rotates. When the reciprocating screw 5 rotates, the active roller 15 is driven to rotate through the belt 29, and the active roller 15 drives the grinding belt 16 to rotate. When the grinding belt 16 rotates, the area between the heat sinks will be polished.

[0033] While the grinding belt 16 rotates, the telescopic bin 11 moves up and down following the reciprocating screw 5, and the reciprocating screw 5 drives the telescopic bin 11 to move up and down through the connecting groove 24, thereby grinding all welding spattering areas between adjacent heat sinks and cleaning all weld nodules in the welding area.

[0034] This solution can grind multiple groups of heat sinks at one time, and the grinding efficiency is determined by the number of adjustable grinding components 13.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A device for removing weld nodules from a transformer tank, comprising a fixing frame (1), characterized in that: Also includes: A variable pitch functional component is provided on the fixing frame (1); A plurality of adaptive grinding mechanisms (2) are distributed in an array at the lower end of the variable pitch functional component; the adaptive grinding mechanism (2) comprises a telescopic bin (11) and a telescopic rod (12); the telescopic bin (11) is arranged at the lower end of the variable pitch functional component; the telescopic rod (12) is slidably connected to the telescopic bin (11) via a compression spring (23); and the ends of the telescopic bin (11) and the telescopic rod (12) are both provided with a distance-adjusting grinding component (13); The adjustable distance grinding assembly (13) comprises a retractable square box (17), a grinding bracket 1 (18) and a grinding bracket 2 (19), the retractable square boxes (17) on both sides are fixed to the ends of the telescopic bin (11) and the telescopic rod (12), respectively, the grinding bracket 1 (18) is slidably arranged at the middle and lower part of the retractable square box (17) through a lower spring (25), and the grinding bracket 2 (19) is slidably arranged at the middle and upper part of the retractable square box (17) through an upper spring (26), and grinding rollers (22) are rotatably provided on both the grinding bracket 1 and the grinding bracket 2.

2. The transformer oil tank weld nodule removal device according to claim 1, characterized in that: The pitch-changing functional component comprises a pitch-changing slider (3) and a pitch-changing screw (9). The pitch-changing sliders (3) are arranged in multiple groups and slide in the side wall of the fixed frame (1). The number of the sliders matches the number of the adaptive grinding mechanisms (2). The pitch-changing screw (9) penetrates the side wall of the fixed frame (1) and is threadedly connected to the pitch-changing slider (3).

3. The transformer oil tank weld nodule removal device according to claim 2, characterized in that: The variable pitch slider (3) is rotatably provided with a nut (4) in an area outside the side wall of the fixed frame (1), and a reciprocating screw (5) is provided at the center of the nut (4).

4. The transformer oil tank weld nodule removal device according to claim 3, characterized in that: The telescopic bin (11) is provided with a connecting groove (24), and the lower end of the reciprocating screw (5) is rotatably disposed in the connecting groove (24).

5. The transformer oil tank weld nodule removal device according to claim 4, characterized in that: A conveying chain (6) is provided around the outside of the nut (4), and one end of the conveying chain (6) is connected to a motor (10).

6. The transformer oil tank weld nodule removal device according to claim 5, characterized in that: A tensioning wheel (7) is slidably provided at one end of the fixing frame (1) away from the motor (10), and a tensioning spring (8) is connected between the tensioning wheel (7) and the fixing frame (1).

7. The transformer oil tank weld nodule removal device according to claim 6, characterized in that: A connecting frame (14) is provided on the side wall of the adjustable distance grinding assembly (13) on the telescopic rod (12), an active roller (15) is rotatably provided on the connecting frame (14), and a grinding belt (16) is provided around the grinding roller (22) and the active roller (15).

8. The transformer oil tank weld nodule removal device according to claim 7, characterized in that: A belt (29) is connected between the active roller (15) and the reciprocating screw (5).

9. The transformer oil tank weld nodule removal device according to claim 8, characterized in that: The first grinding bracket (18) is provided with an introduction cone (21), and the second grinding bracket (19) is provided with an introduction cone (20). The lower end of the introduction cone (20) is provided with an introduction inclined plate (27), and the outermost edge of the introduction inclined plate (27) is flush with the grinding belt (16). The structure of the introduction cone (20) and the introduction cone (21) is the same.

10. The transformer oil tank weld nodule removal device according to claim 9, characterized in that: A support plate (28) is provided above the inlet inclined plate (27), and the support plate (28) is provided at the lower end of the grinding belt (16).

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