Copper stranded wire welding auxiliary device for transformer substation construction and using method

Abstract

The invention relates to the technical field of welding assistance, in particular to a copper stranded wire welding assisting device for transformer substation construction and a using method, the copper stranded wire welding assisting device comprises an upper die and a lower die which are hinged to each other, and taper holes are formed in the upper die and the lower die. According to the copper stranded wire welding auxiliary device for transformer substation construction and the using method, through gradual downward pressing of the pouring pipe in the axial direction, rotating power is continuously converted into circumferential twisting moment, multiple strands of copper stranded wires are guided to be spirally twisted along the central axis of the mold, a stable twisting structure is formed before wires are welded through the pre-twisting technology, and the welding quality of the copper stranded wires is improved. The cable has the advantages that the contact area and the twisting tightness of the conductors are improved through mechanical pre-twisting; the risk of single-wire dislocation is eliminated, and uniform stress of each strand is ensured; a self-tightening hinging form is formed, so that the structure looseness in the subsequent process is avoided; the preformed twisting body is convenient for accurate positioning, the quality of a welding interface is remarkably improved, and an effective guarantee is provided for obtaining a welding joint with high mechanical strength and low contact resistance.

Description

Technical Field

[0001] The invention relates to the technical field of welding assistance, and in particular to a copper stranded wire welding assistance device for substation construction and a use method thereof. Background Art

[0002] Copper stranded wire is mainly used for grounding system in substation construction, and its welding quality directly affects the conductivity, mechanical strength and long-term stability of the system. When welding copper stranded wire in substation, each group of copper stranded wire needs to be extended into the mold cavity at the same time, and then the joints of each group of copper stranded wire need to be welded using welding parts. In order to ensure the welding quality, it is necessary to ensure that the joints of each group of copper stranded wire are located exactly on the central axis of the heat release mold cavity.

[0003] The existing technologies for assisting copper stranded wire welding have low copper stranded wire processing efficiency, unstable quality and high maintenance costs due to problems such as rough structural design, fragmented process steps and lack of dynamic control.

[0004] In view of this, we propose a copper stranded wire welding auxiliary device and a use method for substation construction. Summary of the invention

[0005] The purpose of the present invention is to provide a copper stranded wire welding auxiliary device and a method of use for substation construction, so as to solve the problems of rough structural design, fragmented process steps, lack of dynamic control, etc. in the prior art proposed in the above background technology, which lead to low copper stranded wire processing efficiency, unstable quality, and high maintenance cost. To achieve the above purpose, the present invention provides the following technical scheme: a copper stranded wire welding auxiliary device for substation construction, comprising an upper die and a lower die hinged to each other, a tapered hole is provided on the upper die and the lower die, and the tapered hole is divided into two parts along the fitting surface of the upper die and the lower die, and the tapered hole passes through the upper die and the lower die to form a wire hole connected to the inside, a lower plate is fixedly provided in the lower die, an upper plate is rotatably provided in the upper die, and an inner groove connected to the mold wall of the upper die is provided inside, a driving wheel corresponding to the upper plate is rotatably connected in the inner groove, and the driving wheel and the upper plate are connected by tooth patterns for transmission.

[0006] A perfusion tube is slidably inserted through the surface of the upper plate.

[0007] Preferably, a ring seat is fixedly provided inside the upper mold, the infusion pipe is located inside the ring seat, and a bump is fixedly provided on the surface of the infusion pipe.

[0008] The inside of the ring seat is provided with a spiral groove which cooperates with the convex block to drive the perfusion pipe to move downward, and the bottom end of the spiral groove extends obliquely upward to form an upward movement groove.

[0009] The bottom edge of the perfusion pipe is fixedly provided with a plurality of spike teeth.

[0010] Preferably, an annular groove is provided at the junction of the tapered hole and the wire hole, and a slip ring is slidably connected in the annular groove, and the slip ring and the annular groove are equally divided into two parts that are the same as the tapered hole and the wire hole.

[0011] An elastic member for pushing the sliding ring is arranged in the annular groove.

[0012] The inner ring of the slip ring is fixedly provided with a spring piece extending in a conical shape along the tapered hole, and a clamping edge is fixedly provided at one end of the spring piece away from the slip ring.

[0013] Preferably, convex patterns are provided on opposite sides of the upper plate and the lower plate.

[0014] Preferably, a crank connected to a driving wheel is provided on the top of the upper mold.

[0015] Preferably, handles are fixedly provided on the surfaces of the lower mold and the upper mold, and the hinge points between the handles and the upper mold and the lower mold are symmetrically distributed.

[0016] Preferably, the elastic member is configured as a spring with a wave structure.

[0017] A method for using a copper stranded wire welding auxiliary device for substation construction comprises the following steps: S1. Close the upper die and the lower die, insert the copper strands along the tapered hole, and gather the scattered copper strands along the gradually shrinking hole until they enter the mold along the wire hole. Then, use the driving wheel to push and rotate the upper plate, so that the upper plate twists the copper strands along the lower plate, so as to process the copper strands by combining the convergence of the tapered hole with the rotation of the upper plate; S2. When the upper plate rotates, it drives the injection pipe to rotate, so that the protrusion moves along the spiral groove and pushes the injection pipe downward until the nail teeth press against each copper strand. At this time, the injection pipe continues to rotate to twist each copper strand along the center of the mold, so that each wire is twisted before welding; S3. When twisting the copper strands in the pouring tube, the copper strands are pulled into the mold along the tapered hole. During this process, the tapered springs lock the copper strands to prevent them from moving back. The wire skin of the copper strands is stuck on the edge of the spring surface and pushes the slip ring to move, so that the spring is inserted into the wire hole. At this time, the spring is squeezed and deformed by the wire hole.

[0018] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the copper strands are processed by converging the conical holes and rotating the upper disk, and the following effects are achieved: Efficient guiding and convergence: Through the cooperation of the conical guiding structure of the upper and lower molds, the copper strands are gradually compressed by the conical channel to achieve efficient directional convergence of the scattered copper wires, eliminate burrs on the wire surface, ensure the axial consistency of the strands, and improve the forming quality of the conductors.

[0019] Dynamic rubbing and twisting to enhance density: The driving wheel drives the upper disk to rotate and rub relative to the lower disk, causing the copper stranded wire to bear circumferential torsional force during the axial advancement process, promoting mechanical bite and gap filling between copper wires, and significantly improving the stranded wire density and tensile resistance.

[0020] In the present invention, the perfusion tube is synchronously rotated by the rotation of the upper disk. By the precise cooperation of the convex block and the spiral guiding groove to form a spiral pair drive, the progressive downward pressure of the perfusion tube along the axis is realized. When the nail tooth array accurately presses against the surface of each copper stranded wire, the rotational power is continuously converted into a circumferential twisting torque, guiding the multi-strand copper stranded wire to be helically twisted along the central axis of the mold. This pre-twisting process enables the wire to form a stable twisted structure before welding. Its advantages are as follows: enhancing the conductor contact area and twisting tightness through mechanical pre-twisting; eliminating the risk of single-wire misalignment and ensuring uniform stress on each strand; forming a self-tightening twisted shape to avoid structural looseness in subsequent processes; the preformed twisted body is convenient for precise positioning, significantly improving the quality of the welding interface, and providing an effective guarantee for obtaining a welding joint with high mechanical strength and low contact resistance.

[0021] In the present invention, the elastic piece is deformed by being squeezed by the wire hole to achieve the following effects: Dynamic reverse locking mechanism: Through the linkage design of the sliding ring in the conical hole and the elastic member, the reverse locking function of the conical elastic piece is triggered when the copper stranded wire is introduced. The end clamping edge of the elastic piece forms a ratchet-type biting structure with the wire skin. Combining with the axial displacement of the sliding ring in the ring groove, the one-way feeding locking of the wire body is realized, effectively eliminating the wire body retraction phenomenon caused by stress release during the welding process.

[0022] Adaptive sealing and isolation system: When the elastic piece is radially deformed by being squeezed by the wire hole, it promotes an interference fit between the elastic piece and the wire body. This deformation process simultaneously realizes three functions: establishing a physical isolation barrier between the wire core and the wire skin to prevent solder penetration and contamination; compensating for wire diameter tolerance through the change in the curvature of the elastic piece; the radial pressure generated by the deformation ensures the coaxial positioning accuracy of wire bodies of different specifications in the welding cavity.

[0023] Active welding environment regulation mechanism: During the rotation and downward pressure of the nail tooth array at the bottom edge of the perfusion tube, the oxidation layer on the wire core surface is broken and the solder diversion groove is opened synchronously. The mechanical coupling design of the ring seat, spiral groove and convex block converts the rotational movement of the tube body into precise axial feeding. Combining with the sealing isolation belt formed by the elastic piece, a controllable atmosphere welding environment is constructed, significantly reducing the probability of porosity generation.

[0024] Self-maintenance function integration: The upward movement groove structure at the end of the spiral groove innovatively introduces a reset function module. After the perfusion tube completes solder injection, the nail teeth are decoupled from the wire body by reverse rotation. At this time, the elastic member pushes the sliding ring to reset, releasing the deformation lock of the elastic piece, which is not only convenient for demolding of the finished product but also can automatically remove residual solder slag, ensuring the stability of continuous operation of the device. Brief Description of the Drawings

[0025] Figure 1 This is a three-dimensional structure schematic diagram of the present invention; Figure 2 This is a three-dimensional structure cross-sectional view of the upper die, lower die, upper plate and lower plate of the present invention; Figure 3 This is the present invention Figure 2 An enlarged view of part A in; Figure 4 This is an exploded view of the upper die and the lower die of the present invention Figure 1 ; Figure 5 This is the present invention Figure 4 An enlarged view of part B in; Figure 6 This is an exploded view of the upper die and the lower die of the present invention Figure 2 ; Figure 7 This is the present invention Figure 6 An enlarged view of part C in; Figure 8 This is a three-dimensional structure cross-sectional view of the upper die and the lower die of the present invention; Figure 9 This is an exploded view of the ring seat, perfusion pipe and upper plate of the present invention; Figure 10 This is a structure schematic diagram of the slip ring and the elastic member of the present invention; Figure 11 This is a structure schematic diagram of the slip ring and the elastic sheet of the present invention; Figure 12 This is a trajectory schematic diagram of the spiral groove and the upward movement groove of the present invention.

[0026] In the figure: 1. Upper die; 2. Lower die; 3. Taper hole; 4. Wire hole; 5. Lower plate; 6. Upper plate; 7. Inner groove; 8. Driving wheel; 9. Perfusion pipe; 10. Ring seat; 11. Protrusion; 12. Spiral groove; 13. Upward movement groove; 14. Nail teeth; 15. Ring groove; 16. Slip ring; 17. Elastic member; 18. Elastic sheet; 19. Clamping edge; 20. Convex stripe; 21. Crank; 22. Grip. Detailed Description of the Invention

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1 to 12The present invention provides a technical solution: a copper strand welding auxiliary device for substation construction, comprising an upper die 1 and a lower die 2 which are hinged to each other, a tapered hole 3 is opened on the upper die 1 and the lower die 2, and the tapered hole 3 is equally divided into two parts along the fitting surface of the upper die 1 and the lower die 2, and the tapered hole 3 passes through the upper die 1 and the lower die 2 to form a wire hole 4 which is connected to the inside, the upper die 1 and the lower die 2 are closed, and the copper strand is inserted along the tapered hole 3, and the scattered copper wires on the surface of the copper strand are contracted along the gradually contracting hole body. Bundle, until entering the interior of the mold along the wire hole 4, a lower plate 5 is fixedly arranged in the lower mold 2, an upper plate 6 is rotatably arranged in the upper mold 1, and an inner groove 7 connected to the mold is opened inside the mold wall of the upper mold 1, and a driving wheel 8 corresponding to the upper plate 6 is rotatably connected in the inner groove 7, and the driving wheel 8 and the upper plate 6 are connected for transmission through the tooth pattern, and the driving wheel 8 is used to push the upper plate 6 to make the upper plate 6 rub the copper stranded wire along the lower plate 5, so as to utilize the tapered hole 3 to converge and cooperate with the upper plate 6 to rotate to process the copper stranded wire.

[0029] A pouring tube 9 is slidably inserted through the surface of the upper plate 6, and the welding liquid is poured into the mold along the pouring tube 9 to weld the copper strands inside.

[0030] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 As shown, a ring seat 10 is fixedly provided inside the upper mold 1 , the pouring tube 9 is located inside the ring seat 10 , and a bump 11 is fixedly provided on the surface of the pouring tube 9 .

[0031] A spiral groove 12 is provided inside the ring seat 10 for cooperating with the protrusion 11 to drive the perfusion tube 9 downward, and the bottom end of the spiral groove 12 extends obliquely upward to form an upward groove 13. When the upper plate 6 rotates, it drives the perfusion tube 9 to rotate, so that the protrusion 11 moves along the spiral groove 12 and pushes the perfusion tube 9 downward.

[0032] The bottom edge of the pouring tube 9 is fixed with a plurality of spike teeth 14. The pouring tube 9 moves down until the spike teeth 14 press against each copper strand. At this time, the pouring tube 9 continues to rotate to twist each copper strand along the center of the mold, so that each wire is twisted before welding.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 As shown, an annular groove 15 is provided at the junction of the tapered hole 3 and the linear hole 4, and a slip ring 16 is slidably connected in the annular groove 15, and the slip ring 16 and the annular groove 15 are equally divided into two parts that are the same as the tapered hole 3 and the linear hole 4.

[0034] An elastic member 17 for pushing the sliding ring 16 is arranged in the annular groove 15 .

[0035] The inner ring of the slip ring 16 is fixedly provided with a spring piece 18 that extends conically along the tapered hole 3. When the copper stranded wires are twisted by the perfusion pipe 9, the copper stranded wires are pulled into the mold along the tapered hole 3. During this process, the tapered spring piece 18 locks the copper stranded wires in reverse to prevent the copper stranded wires from moving back. Moreover, a clamping edge 19 is fixedly provided at one end of the spring piece 18 away from the slip ring 16. The wire sheath of the copper stranded wire is stuck on the clamping edge 19 on the surface of the spring piece 18 and pushes the slip ring 16 to displace, so that the spring piece 18 is inserted into the wire hole 4. At this time, the spring piece 18 is deformed by the extrusion of the wire hole 4.

[0036] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 shown, convex stripes 20 are provided on the opposite sides of the surfaces of the upper disc 6 and the lower disc 5. The upper disc 6 and the lower disc 5 can use the convex stripes 20 to increase the contact friction force with the copper stranded wires, ensuring that the upper disc 6 can stably twist the steel stranded wires when rotating.

[0037] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 shown, a crank 21 connected to the driving wheel 8 is provided at the top of the upper die 1. The driving wheel 8 can be conveniently rotated by using the crank 21.

[0038] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 shown, handle grips 22 are fixedly provided on the surfaces of the lower die 2 and the upper die 1, and the hinge points of the handle grips 22 with the upper die 1 and the lower die 2 are symmetrically distributed. The upper die 1 and the lower die 2 are pushed to open and close through the handle grips 22. Screw holes can be provided on the two handle grips 22, and the two handle grips 22 are locked together by screwing bolts into the screw holes.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 12 shown, the elastic member 17 is a spring with a wave structure. The spring with a wave structure enables the spring body to fully contact the slip ring 16, thereby ensuring the smoothness of the sliding of the slip ring 16.

[0040] A usage method of a copper stranded wire welding auxiliary device for substation construction includes the following steps: S1. Close the upper die 1 and the lower die 2, insert the copper stranded wire along the tapered hole 3, and the scattered copper wires on the surface of the copper stranded wire are bundled along the gradually shrinking hole body until they enter the mold interior along the wire hole 4. Then, use the driving wheel 8 to rotate the upper disc 6, so that the upper disc 6 twists the copper stranded wire along the lower disc 5, thereby using the bundling of the tapered hole 3 and the rotation of the upper disc 6 to process the copper stranded wire.

[0041] S2. When the upper disc 6 rotates, it drives the perfusion tube 9 to rotate, causing the convex block 11 to move along the spiral groove 12 and pushing the perfusion tube 9 downward until the nail teeth 14 press against each copper stranded wire. At this time, the continuously rotating perfusion tube 9 twists each copper stranded wire along the center of the mold, so that each wire is twisted before welding.

[0042] S3. When the perfusion tube 9 twists each copper stranded wire, the copper stranded wire is pulled into the mold along the tapered hole 3. During this process, the conical elastic piece 18 locks the copper stranded wire in reverse to prevent the copper stranded wire from moving back, and the wire skin of the copper stranded wire is stuck on the card edge 19 on the surface of the elastic piece 18 and pushes the sliding ring 16 to displace, so that the elastic piece 18 is inserted into the wire hole 4. At this time, the elastic piece 18 is deformed by the extrusion of the wire hole 4.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper strand welding auxiliary device for substation construction, comprising an upper die (1) and a lower die (2) hinged to each other, characterized in that: The upper mold (1) and the lower mold (2) are provided with a tapered hole (3), and the tapered hole (3) is equally divided into two parts along the fitting surface of the upper mold (1) and the lower mold (2), and the tapered hole (3) passes through the upper mold (1) and the lower mold (2) to form a line hole (4) connected to the inside, a lower plate (5) is fixedly arranged in the lower mold (2), an upper plate (6) is rotatably arranged in the upper mold (1), and an inner groove (7) connected to the mold is provided inside the mold wall of the upper mold (1), a driving wheel (8) corresponding to the upper plate (6) is rotatably connected in the inner groove (7), and the driving wheel (8) and the upper plate (6) are transmission-connected through tooth patterns; A perfusion tube (9) is slidably inserted through the surface of the upper plate (6).

2. The copper strand welding auxiliary device for substation construction according to claim 1 is characterized in that: A ring seat (10) is fixedly provided inside the upper mold (1), the pouring tube (9) is located inside the ring seat (10), and a protrusion (11) is fixedly provided on the surface of the pouring tube (9); The ring seat (10) is provided with a spiral groove (12) inside thereof, which cooperates with the protrusion (11) to drive the perfusion tube (9) to move downward, and the bottom end of the spiral groove (12) extends obliquely upward to form an upward movement groove (13); A plurality of spike teeth (14) are fixedly provided on the bottom edge of the perfusion tube (9).

3. The copper strand welding auxiliary device for substation construction according to claim 2 is characterized in that: An annular groove (15) is provided at the junction of the tapered hole (3) and the wire hole (4), and a slip ring (16) is slidably connected in the annular groove (15), and the slip ring (16) and the annular groove (15) are equally divided into two parts that are the same as the tapered hole (3) and the wire hole (4); An elastic member (17) for pushing the slip ring (16) is arranged in the annular groove (15); The inner ring of the slip ring (16) is fixedly provided with a spring piece (18) extending in a conical shape along the tapered hole (3), and a clamping edge (19) is fixedly provided at one end of the spring piece (18) away from the slip ring (16).

4. The copper strand welding auxiliary device for substation construction according to claim 1 is characterized in that: The upper plate (6) and the lower plate (5) are provided with convex patterns (20) on opposite sides of their surfaces.

5. The copper strand welding auxiliary device for substation construction according to claim 1 is characterized in that: A crank handle (21) connected to the driving wheel (8) is provided on the top of the upper mold (1).

6. The copper strand welding auxiliary device for substation construction according to claim 1 is characterized in that: A handle (22) is fixedly provided on the surface of the lower mold (2) and the upper mold (1), and the hinge points of the handle (22) and the upper mold (1) and the lower mold (2) are symmetrically distributed.

7. The copper strand welding auxiliary device for substation construction according to claim 3 is characterized in that: The elastic member (17) is configured as a spring with a wave structure.

8. A method for using a copper stranded wire welding auxiliary device for substation construction, using the copper stranded wire welding auxiliary device for substation construction as claimed in claim 3, characterized in that: The steps include: S1, closing the upper mold (1) and the lower mold (2), inserting the copper strands along the tapered hole (3), and gathering the scattered copper strands on the surface of the copper strands along the gradually shrinking hole body until the strands enter the mold along the wire hole (4), and then pushing and rotating the upper plate (6) with the driving wheel (8), so that the upper plate (6) twists the copper strands along the lower plate (5), thereby utilizing the gathering of the tapered hole (3) and the rotation of the upper plate (6) to process the copper strands; S2, when the upper plate (6) rotates, the pouring tube (9) is driven to rotate, so that the protrusion (11) moves along the spiral groove (12) and pushes the pouring tube (9) downward until the nail teeth (14) press against each copper strand. At this time, the pouring tube (9) continues to rotate to twist each copper strand along the center of the mold, so that each wire is twisted before welding; S3. When the copper strands are twisted in the pouring tube (9), the copper strands are pulled into the mold along the tapered hole (3). During this process, the tapered spring piece (18) locks the copper strands to prevent them from moving back. The wire skin of the copper strands is stuck on the edge (19) on the surface of the spring piece (18) and pushes the slip ring (16) to move, so that the spring piece (18) is inserted into the wire hole (4). At this time, the spring piece (18) is squeezed and deformed by the wire hole (4).

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