Convenient placing and taking method of transformer lead reel

Abstract

The present application belongs to the field of transformer manufacturing, and relates to a method for conveniently placing and taking wire of a transformer lead reel, welding an upper-layer and a lower-layer cuboid tool frame, welding a steel support leg on the lower-layer cuboid tool frame, assembling a non-powered roller shaft, assembling a steel annular lifting lug, assembling a measurement auxiliary assembly, placing three lead reels in the lower-layer cuboid tool frame, hoisting and placing the upper-layer cuboid tool frame above the lower-layer cuboid tool frame and fixing and limiting, placing three lead reels in the upper-layer cuboid tool frame, selecting according to needs in the process of transformer production, pulling the lead wire when taking the lead wire, and rotating the lead reel on the non-powered roller shaft; fixing the first end of a measurement scale to one end of a steel wire rope, and measuring the length of the taken lead wire through the measurement scale. The present application has the advantages of simple tool structure, convenient installation and use, simple lead reel storage and maintenance, and realizes orderly, safe and reliable placement of the lead reel and accurate wire taking.

Description

Technical Field

[0001] This invention belongs to the field of transformer manufacturing technology, specifically relating to a method for convenient placement and wire retrieval of transformer lead wire reels. Background Technology

[0002] During the transformer manufacturing process, various raw material leads are stored on the transformer production site via wire reels. The leads are then matched and cut according to technical requirements, and then the transformer is processed and assembled.

[0003] However, in the actual production process of transformers, the storage and placement of various raw material lead reels are not standardized, with different types of raw material leads being mixed together. This results in long search and verification times and low production efficiency when retrieving and checking leads. The reels need to be turned and rolled during the process of retrieving and cutting leads, which poses a significant safety hazard. Furthermore, it is difficult to accurately measure the length of the cut leads during the cutting process, and inaccurate measurements will lead to significant cost waste. Summary of the Invention

[0004] To address the aforementioned technical problems in the existing technology, this invention provides a convenient method for placing and retrieving transformer lead wire reels, enabling customized storage, convenient retrieval, and precise lead wire cutting during transformer production. The technical solution adopted by this invention is as follows: A convenient method for placing and retrieving transformer lead coils includes the following steps: Step 1: Weld the upper and lower rectangular tooling frames separately. The upper and lower rectangular tooling frames have the same structure and specifications. Weld the ends of the four upper steel pipes and the four lower steel pipes together to form the upper rectangular frame and the lower rectangular frame. Weld four vertical steel pipes between the upper and lower rectangular frames. Weld the upper and lower ends of the four vertical steel pipes to the corners of the upper and lower rectangular frames to form a rectangular tooling frame. Step 2: Weld four rigid support legs below the four corners of the lower rectangular frame of the lower cuboid tooling frame; Step 3: Assemble the non-powered rollers: Weld two parallel support steel pipes between the two steel pipes in the width direction of the lower rectangular frame of the upper and lower cuboid tooling frame. Three non-powered rollers are evenly distributed and rotatably installed on each support steel pipe. The three non-powered rollers on the two support steel pipes are opposite each other in pairs. The spacing between the pairs of opposite non-powered rollers matches the outer diameter of the lead wire reel. Step 4: Assemble the rigid annular lifting lugs: Weld four rigid annular lifting lugs to the four corners of the upper rectangular frame of the upper and lower rectangular tooling frames respectively. Weld the rigid annular lifting lugs of the lower rectangular tooling frame to the top side of the lower rectangular tooling frame. Step 5: Assemble the measurement auxiliary components: Set the measurement auxiliary components on the outer side of the steel pipe at the bottom of the cuboid tooling frame. The measurement auxiliary components include: a steel wire rope, a fixed steel pipe with an internal thread hole, a connecting screw, and an expansion cap. The fixed steel pipe is welded to both ends of the outer side of the bottom steel pipe. A through hole is opened at the center of the connecting screw. The two ends of the steel wire rope pass through the internal thread hole of the fixed steel pipe and the through hole of the connecting screw, respectively, and then the expansion cap is fixed. Adjust the connecting screw screw screwed in the fixed steel pipe to make the steel wire rope taut. Step 6: Place three lead wire reels in the lower rectangular tooling frame and hoist the lead wire reels onto the paired non-powered rollers of the lower rectangular tooling frame. Step 7: Hoist the upper cuboid tooling frame onto the lower cuboid tooling frame. Set a limiting guard plate on the outer surface of the top four corners of the lower cuboid tooling frame. The limiting guard plate is an L-shaped right-angle structure. Quick-connect pin holes are opened on both planes of the limiting guard plate. Through holes corresponding to the size and position of the quick-connect pin holes are opened on the top side of the lower cuboid tooling frame. Align the quick-connect pin holes of the limiting guard plate with the through holes on the top side of the lower cuboid tooling frame. Insert the quick-connect pins into the quick-connect pin holes and through holes. The upper part of the limiting guard plate is higher than the top of the lower cuboid tooling frame. Step 8: Place three lead wire reels in the upper rectangular tooling frame and hoist the lead wire reels onto the paired non-powered rollers of the upper rectangular tooling frame. Step 9, Lead wire cutting and measurement: During the transformer production process, the appropriate specification of lead wire is selected from the upper or lower cuboid tooling frame as needed. When taking the lead wire, only one person needs to pull the lead wire, and the lead wire reel rotates on the unpowered roller. At the same time, the first end of the measuring scale is fixed to one end of the steel wire rope. During the wire taking process, the length of the cut lead wire is measured by measuring the measuring scale.

[0005] Preferably, in step 3, the roller mounting mechanism includes a support base and a fixing screw. A pair of parallel support bases are welded onto the support steel pipe. A through hole is provided at the upper end of the support base. The two ends of the inner shaft of the unpowered roller are rotatably installed into the through hole. The two ends of the inner shaft of the unpowered roller are provided with internal threaded holes. After the two ends of the inner shaft of the unpowered roller pass through the through hole, the fixing screw is screwed into the internal threaded holes at both ends of the inner shaft to complete the fixing and fastening.

[0006] Preferably, the steel pipe is a rectangular steel pipe with a specification of 50*70mm.

[0007] Preferably, the dimensions of the cuboid tooling frame are 2810*1100*950mm.

[0008] Preferably, the non-powered roller has a diameter of 90mm and a length of 800mm.

[0009] Preferably, a quick-connect pin hole corresponding to the bottom of the upper cuboid tooling frame is opened on the limiting guard plate, and a corresponding through hole is opened at the bottom of the upper cuboid tooling frame.

[0010] The beneficial effects of this invention are: The present invention provides a convenient method for placing and retrieving transformer lead wire reels. The rectangular tooling frame structure is simple, the tooling is easy to install and use, and the lead wire reel storage and maintenance are simple. This method achieves orderly and safe placement of transformer lead wire reels, effectively improving "6S" management in the transformer production site. By adding auxiliary accessories such as "non-powered rollers" and "measuring rulers" to the tooling, the ease of wire retrieval is effectively improved. The measuring ruler accurately measures the cut lead wire length, effectively reducing production costs. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional schematic diagram of the lead coil placement state according to an embodiment of the present invention; Figure 2 This is an exploded view of the roller mounting mechanism according to an embodiment of the present invention; Figure 3 This is an exploded view of the measurement auxiliary component according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the limiting guard plate according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation structure of the limiting guard plate and the measuring auxiliary component according to an embodiment of the present invention; Among them, 1. steel pipe, 2. rigid annular lifting lug, 3. non-powered roller, 3-1 is a through hole, 3-2 is a support base, 3-3 is a fixing screw, 4. supporting steel pipe, 5. roller mounting mechanism, 6. rigid support leg, 7. lead wire reel, 8. limit guard plate, 9. quick-connect pin insertion hole, 10 is a measuring auxiliary component, 10-1 is a steel wire rope, 10-2 is a fixing steel pipe, 10-3 is a connecting screw, and 10-4 is an expansion cap. Detailed Implementation

[0012] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0013] like Figure 1-5 As shown, the method for convenient placement and retrieval of transformer lead coils includes the following steps: Step 1: Weld the upper and lower cuboid tooling frames separately. The upper and lower cuboid tooling frames have the same specifications.

[0014] Steel pipe 1 is selected as the basic support component of the tooling frame. Rectangular steel pipe with a specification of 50*70mm is preferred for steel pipe 1. This type of rectangular pipe has strong load-bearing capacity, capable of withstanding a maximum weight of two tons, has a long service life, is not easily damaged, and is lighter in weight while maintaining the same bending and torsional strength. The ends of the upper four steel pipes 1 and the lower four steel pipes 1 are welded together to form the upper and lower rectangular frames. Four vertical steel pipes 1 are welded between the upper and lower rectangular frames. The upper and lower ends of the four vertical steel pipes 1 are welded to the corners of the upper and lower rectangular frames, respectively, forming a cuboid tooling frame with specifications of 2810*1100*950mm. There are three common lead wire models for 110KV transformers: TJR-185㎡, TJR-240㎡, and TJR-300㎡. Combined with a lead wire reel 7 with a general diameter of 800mm, a rectangular tooling frame is designed and welded with the three lead wire specifications as a unit. This facilitates lead wire cutting and daily management of the lead wire reel 7 during transformer production.

[0015] Step 2: Fix four rigid support legs 6 to the lower rectangular frame of the lower rectangular fixture frame by welding. The rigid support legs 6 are in contact with the ground, making the fixture more stable. The upper rectangular fixture frame will be stacked on top of the lower rectangular fixture frame, so the upper rectangular fixture frame does not have rigid support legs.

[0016] Step 3: Assemble the non-powered roller 3.

[0017] Two parallel supporting steel pipes 4 are welded between two steel pipes 1 in the width direction of the lower rectangular frame. Three unpowered rollers 3 are evenly distributed and rotatably mounted on each supporting steel pipe 4. The three unpowered rollers 3 on the two supporting steel pipes 4 are paired opposite each other, and the spacing between the pairs of opposing unpowered rollers 3 matches the outer diameter of the lead wire reel 7. The lead wire reel 7 is placed on the three pairs of opposing unpowered rollers 3. The unpowered rollers 3 are rotatably mounted on the supporting steel pipes 4 via a roller mounting mechanism 5. The preferred specifications of the unpowered rollers 3 are 90mm in diameter and 800mm in length. This specification of unpowered roller is composed of a galvanized pipe body, an inner shaft, end caps, and bearings. The combined load capacity of this assembly is 500kg. When two parallel unpowered rollers are used together, tests show that a 600kg reel can be pushed effortlessly by a single person.

[0018] The roller mounting mechanism 5 includes a support base 3-2 and a fixing screw 3-3. A pair of parallel support bases 3-2 are welded onto the support steel pipe 4. A through hole 3-1 is provided at the upper end of the pair of support bases 3-2. The two ends of the inner shaft of the unpowered roller 3 are rotatably installed into the through hole 3-1. The two ends of the inner shaft of the unpowered roller 3 are provided with internal threaded holes. After the two ends of the inner shaft of the unpowered roller 3 pass through the through hole 3-1, the fixing screw 3-3 is screwed into the internal threaded holes at both ends of the inner shaft to complete the fixation and tightening.

[0019] Step 4: Assemble the rigid annular lifting lug 2.

[0020] Four rigid annular lifting lugs 2 are fixedly installed at the four corners of the upper rectangular frame by welding. These lugs 2 must withstand twice the load without deformation and four times the load without breakage. Because the lead wire reels 7 are generally heavy, rollers cannot be installed at the bottom of the fixture; therefore, four rigid annular lifting lugs 2 are used. These lugs 2 are attached to a crane to facilitate the overall movement of the rectangular fixture frame. Since the fixture may sometimes be used separately, rigid annular lifting lugs 2 are installed on both the upper and lower rectangular fixture frames. The lower rigid annular lifting lugs 2 must be welded to the top side of the lower rectangular fixture frame to ensure that the lower lugs 2 do not interfere with the bottom of the upper rectangular fixture frame.

[0021] Step 5: Assemble the measurement auxiliary component 10.

[0022] A measuring auxiliary component 10 is installed on the outer side of the steel pipe 1 at the bottom of the cuboid tooling frame. The measuring auxiliary component 10 includes: a steel wire rope 10-1, a shorter fixed steel pipe 10-2 with an internal threaded hole, a connecting screw 10-3, and an expansion cap 10-4. The fixed steel pipe 10-2 is welded to both ends of the outer side of the bottom steel pipe 1. The steel wire rope 10-1 has a diameter of 2mm. The connecting screw 10-3 is M20, with a through hole at its center. Both ends of the steel wire rope 10-1 pass through the internal threaded hole of the fixed steel pipe 10-2 and the through hole of the connecting screw 10-3, respectively, and are then fixed to the expansion cap 10-4. The steel wire rope 10-1 is adjusted to a taut state by adjusting the connecting screw 10-3 screwed into the fixed steel pipe 10-2. When measuring the length of the lead wire, the first end of the measuring scale is fixed to one end of the steel wire rope 10-1. During the wire removal process, the length of the cut lead wire is measured using the measuring scale. A taut steel wire rope 10-1 ensures the measurement accuracy of the measuring scale.

[0023] Step 6: Place three lead wire reels 7 in the lower rectangular tooling frame.

[0024] Using a gantry crane, the three transformer lead wire reels 7 are respectively hoisted onto the paired non-powered rollers 3 of the lower rectangular tooling frame.

[0025] Step 7: Assemble the upper cuboid tooling frame onto the lower cuboid tooling frame.

[0026] Using a gantry crane, the upper rectangular tooling frame is accurately placed on top of the lower rectangular tooling frame. To ensure the stability of the double-layer rectangular tooling frames stacked on top of each other, limiting guard plates 8 are set on the outer surface of the top four corners of the lower rectangular tooling frame. The limiting guard plates 8 are L-shaped right-angle structures, and quick-plug holes 9 are opened on both planes of the limiting guard plates 8. Through holes corresponding to the size and position of the quick-plug holes 9 are opened on the top side of the lower rectangular tooling frame. After the upper cuboid tooling frame is stacked on top of the lower cuboid tooling frame, the quick-release pin hole 9 of the limiting guard plate 8 is aligned with the top side through hole of the lower cuboid tooling frame. The quick-release pin is inserted into the quick-release pin hole 9 and the through hole to fix the limiting guard plate 8. The upper part of the limiting guard plate 8 is higher than the top of the lower cuboid tooling frame. The limiting guard plate 8 can fix and limit the upper cuboid tooling frame, ensuring the overall stability of the double-layer cuboid tooling frame.

[0027] Furthermore, quick-connect pin holes 9 corresponding to the bottom of the upper cuboid tooling frame can be opened on the limiting guard plate 8, and corresponding through holes can be opened on the bottom of the upper cuboid tooling frame. The upper cuboid tooling frame and the lower cuboid tooling frame can be fixedly connected into one unit by the limiting guard plate 8 and quick-connect pins, which facilitates the simultaneous lifting and moving of the upper cuboid tooling frame and the lower cuboid tooling frame.

[0028] Figure 5 For the purpose of illustrating the installation structure of the limiting guard plate 8, some components of the upper cuboid tooling frame have been omitted.

[0029] Step 8: Place three lead wire reels 7 in the upper rectangular tooling frame.

[0030] Using a gantry crane, the three transformer lead wire reels 7 are respectively hoisted onto the paired non-powered rollers 3 of the upper rectangular tooling frame.

[0031] The transformer lead wire reel placement and wire retrieval method of this invention embodiment can place six transformer lead wire reels 7 at a time.

[0032] Step 9: Wire measurement and cutting.

[0033] During the transformer production process, leads of the appropriate specifications are selected from the upper or lower cuboid tooling frame as needed. When taking the leads, only one person needs to pull the leads, and the lead wire reel 7 rotates on the unpowered roller 3, achieving the effect of labor-saving lead taking. At the same time, the length of the cut leads is accurately measured during the lead cutting process through the measuring auxiliary components and measuring scale.

[0034] In the embodiments of the present invention, all technical features not described in detail are existing technologies or conventional technical means, and will not be repeated here.

[0035] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A convenient method for placing and retrieving transformer lead wire reels, characterized in that, Includes the following steps: Step 1: Weld the upper and lower rectangular tooling frames separately. The upper and lower rectangular tooling frames have the same structure and specifications. Weld the ends of the four upper steel pipes and the four lower steel pipes together to form the upper rectangular frame and the lower rectangular frame. Weld four vertical steel pipes between the upper and lower rectangular frames. Weld the upper and lower ends of the four vertical steel pipes to the corners of the upper and lower rectangular frames to form a rectangular tooling frame. Step 2: Weld four rigid support legs below the four corners of the lower rectangular frame of the lower cuboid tooling frame; Step 3: Assemble the non-powered rollers: Weld two parallel support steel pipes between the two steel pipes in the width direction of the lower rectangular frame of the upper and lower rectangular tooling frame. Three non-powered rollers are evenly distributed and rotatably installed on each support steel pipe. The three non-powered rollers on the two support steel pipes are opposite each other in pairs. The spacing between the pairs of opposite non-powered rollers matches the outer diameter of the lead wire reel. Step 4: Assemble the rigid annular lifting lugs: Weld four rigid annular lifting lugs to the four corners of the upper rectangular frame of the upper and lower rectangular tooling frames respectively. Weld the rigid annular lifting lugs of the lower rectangular tooling frame to the top side of the lower rectangular tooling frame. Step 5: Assemble the measurement auxiliary components: Set the measurement auxiliary components on the outer side of the steel pipe at the bottom of the cuboid tooling frame. The measurement auxiliary components include: a steel wire rope, a fixed steel pipe with an internal thread hole, a connecting screw, and an expansion cap. The fixed steel pipe is welded to both ends of the outer side of the bottom steel pipe. A through hole is opened at the center of the connecting screw. The two ends of the steel wire rope pass through the internal thread hole of the fixed steel pipe and the through hole of the connecting screw, respectively, and then the expansion cap is fixed. Adjust the connecting screw screw screwed in the fixed steel pipe to make the steel wire rope taut. Step 6: Place three lead wire reels in the lower rectangular tooling frame and hoist the lead wire reels onto the paired non-powered rollers of the lower rectangular tooling frame. Step 7: Hoist the upper cuboid tooling frame onto the lower cuboid tooling frame. Set a limiting guard plate on the outer surface of the top four corners of the lower cuboid tooling frame. The limiting guard plate is an L-shaped right-angle structure. Quick-connect pin holes are opened on both planes of the limiting guard plate. Through holes corresponding to the size and position of the quick-connect pin holes are opened on the top side of the lower cuboid tooling frame. Align the quick-connect pin holes of the limiting guard plate with the through holes on the top side of the lower cuboid tooling frame. Insert the quick-connect pins into the quick-connect pin holes and through holes. The upper part of the limiting guard plate is higher than the top of the lower cuboid tooling frame. Step 8: Place three lead wire reels in the upper rectangular tooling frame and hoist the lead wire reels onto the paired non-powered rollers of the upper rectangular tooling frame. Step 9, Lead wire cutting and measurement: During the transformer production process, the appropriate specification of lead wire is selected from the upper or lower cuboid tooling frame as needed. When taking the lead wire, only one person needs to pull the lead wire, and the lead wire reel rotates on the unpowered roller. At the same time, the first end of the measuring scale is fixed to one end of the steel wire rope. During the wire taking process, the length of the cut lead wire is measured by measuring the measuring scale.

2. The method for convenient placement and retrieval of transformer lead coils according to claim 1, characterized in that, In step 3, the roller mounting mechanism includes a support base and a fixing screw. A pair of parallel support bases are welded onto the support steel pipe. A through hole is provided at the upper end of the support base. The two ends of the inner shaft of the unpowered roller are rotatably installed into the through hole. The two ends of the inner shaft of the unpowered roller are provided with internal threaded holes. After the two ends of the inner shaft of the unpowered roller pass through the through hole, the fixing screw is screwed into the internal threaded holes at both ends of the inner shaft to complete the fixing and tightening.

3. The method for convenient placement and retrieval of transformer lead coils according to claim 2, characterized in that, The steel pipe used is a rectangular steel pipe with a specification of 50*70mm.

4. The method for convenient placement and retrieval of transformer lead coils according to claim 2, characterized in that, The dimensions of the rectangular tooling frame are 2810*1100*950mm.

5. The method for convenient placement and retrieval of transformer lead coils according to claim 2, characterized in that, The specifications of the non-powered roller are a non-powered roller with a diameter of 90mm and a length of 800mm.

6. The method for convenient placement and retrieval of transformer lead coils according to claim 2, characterized in that, A quick-connect pin socket is made on the limiting guard plate corresponding to the bottom of the upper cuboid tooling frame, and a corresponding through hole is made on the bottom of the upper cuboid tooling frame.

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