Lightweight combined transformer lead mechanism

Abstract

The application discloses a light-weight combined transformer lead mechanism and relates to the technical field of transformers.The light-weight combined transformer lead mechanism comprises a lead frame, a moving mechanism arranged on the inner side of the lead frame, a moving contact mechanism arranged on the moving mechanism, a front side wall of the lead frame, three groups of connecting mechanisms arranged on the front side wall of the lead frame, and a plurality of wiring mechanisms arranged on each connecting mechanism.The transmission scheme of metal moving screw rods and moving blocks in thread cooperation is adopted to replace the traditional plastic gear and rack structure, thereby significantly improving the mechanical strength and wear resistance of the transmission mechanism;after the electric connection frame and the electric connection rod are worn, the abutting spring can be automatically elongated to compensate and maintain stable contact pressure;the key components such as the electric connection frame and the abutting plate can be independently disassembled and replaced, thereby reducing the maintenance cost and downtime;the design of metal transmission and insulation material isolation not only guarantees the high strength and long service life of the transmission mechanism, but also avoids additional heavy insulation partitions, thereby realizing the cooperation of the light weight and high safety of the device.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a lightweight combined transformer lead mechanism. Background Technology

[0002] The transformer lead-in mechanism is a key component assembly in a transformer that leads the winding terminals to the outside to achieve electrical connection. The lead-in mechanism mainly includes terminals, lead-in fixing plates, insulating supports, and switching devices for changing the tap connection relationship. Among these, the tap changer, as the core device in the lead-in mechanism that realizes voltage regulation and tap switching, directly affects the transformer's operational reliability and regulation accuracy.

[0003] Existing strip-type tap changers with no-excitation transmission mechanisms mostly employ a gear and rack combination made of plastic materials. However, the insulated gears and racks are prone to wear, deformation, stripping, and even breakage during long-term repeated operation, leading to decreased transmission accuracy, inaccurate gear positioning, and a lack of reliable self-locking function. Unexpected gear shifts may occur under the influence of external factors such as equipment vibration. Furthermore, existing electrical connecting pieces mostly use a spring-loaded structure to abut the moving contact. After long-term use, the springs are prone to fatigue failure, resulting in poor contact. Moreover, individual replacement is difficult, leading to high maintenance costs. Therefore, this application proposes a lightweight combined transformer lead mechanism. Summary of the Invention

[0004] The purpose of this invention is to provide a lightweight combined transformer lead mechanism, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lightweight combined transformer lead wire mechanism, including a lead wire frame, a moving mechanism is provided inside the lead wire frame, a moving contact mechanism is provided on the moving mechanism, and three sets of connecting mechanisms are provided on the front side wall of the lead wire frame, each set of connecting mechanisms being provided with several wiring mechanisms. The moving mechanism includes a movable lead screw located inside the lead frame, and the left and right ends of the movable lead screw are rotatably connected to the left and right inner walls of the lead frame, respectively. The moving contact mechanism includes a moving block, a limiting frame fixedly connected to the rear end of the moving block, the limiting frame being slidably connected to the rear side wall of the lead frame, a connecting pipe penetrating through both ends in the middle of the moving block, the connecting pipe being sleeved on the moving lead screw and threadedly connected to the moving lead screw, a mating groove being opened at the front end of the moving block, a mating plate being provided inside the mating groove, a connecting bolt being provided above the moving block, the lower end of the connecting bolt penetrating sequentially through the upper side wall of the mating groove and the mating plate and threadedly connected to the lower side wall of the mating groove, a disassembly frame being fixedly connected to the front end of the mating plate, an abutting mechanism being provided inside the disassembly frame, and an electrical connecting frame symmetrically arranged vertically inside the abutting mechanism; The abutting mechanism includes two symmetrically arranged Z-shaped abutting plates. A limiting slide rod is fixedly connected to the upper inner wall of the disassembly frame. The lower end of the limiting slide rod passes through the two abutting plates in sequence and is fixedly connected to the lower inner wall of the disassembly frame. Two abutting springs are sleeved on the limiting slide rod. The adjacent ends of the two abutting springs are fixedly connected to the two abutting plates away from each other's side walls. The ends of the two abutting springs away from each other are fixedly connected to the upper and lower inner walls of the disassembly frame. The abutment plate has a limiting slide rail. Two limiting brackets are provided on the opposite side of each abutment plate. The end of each limiting bracket near the electrical connection frame passes through the limiting slide rail and is fixedly connected to an assembly block. An elastic telescopic rod is provided between the two assembly blocks. The left and right ends of the elastic telescopic rod are fixedly connected to the adjacent side walls of the two assembly blocks, respectively. Both assembly blocks are located within the electrical connection frame, which is U-shaped. Two abutment grooves are provided on the adjacent side of each of the two electrical connection frames. Limiting grooves are provided on the opposite side of each of the two assembly blocks. A snap-fit ​​groove is provided on the inner wall of the adjacent side of each of the two limiting grooves. The left and right side walls of the electrical connection frame are located within the two limiting grooves, respectively. Snap-fit ​​plates are fixedly connected to the inner walls of both sides of the electrical connection frame, with adjacent ends of the two snap-fit ​​plates extending into the two snap-fit ​​grooves, respectively. The abutment plate, limiting bracket, assembly block, disassembly frame, moving block, and limiting frame are all made of insulating material.

[0006] Preferably, two auxiliary plates are fixedly connected to the inner right wall of the lead frame. A rotating rod is rotatably connected to the upper end of the lower auxiliary plate. The upper end of the rotating rod passes through the upper auxiliary plate and extends to the top of the lead frame. A driving worm gear is fixedly connected to the movable lead screw, and a driving worm is fixedly connected to the rotating rod. The driving worm is located between the two auxiliary plates, and the driving worm is adapted to the driving worm gear.

[0007] Preferably, the wiring mechanism has a connection hole on the front side wall of the lead frame. The wiring mechanism includes an electrical connection rod. The rear end of the electrical connection rod extends through the connection hole into the lead frame. Positioning holes are provided on the left and right sides of the connection hole on the inner front wall of the lead frame. A limiting plate is fixedly connected to the electrical connection rod. The size of the limiting plate is smaller than the size of the connection hole. Two positioning rods are fixedly connected to the front end of the limiting plate. The front ends of the positioning rods extend into the positioning holes. An external threaded tube is fixedly connected to the electrical connection rod. A locking nut is threaded onto the external threaded tube. The rear end of the locking nut abuts against the front end of the lead frame.

[0008] Preferably, the limiting plate, the external threaded tube, and the locking nut are all made of insulating materials.

[0009] Preferably, the front end of the electrical connecting rod is fixedly connected to a connecting outer frame, the front side of the connecting outer frame is provided with a connecting internal thread tube, the rear end of the connecting internal thread tube passes through the front side wall of the connecting outer frame and extends into the connecting outer frame, a pressure plate is slidably connected inside the connecting outer frame, and the rear end of the connecting internal thread tube passes through the pressure plate and is rotatably connected to the pressure plate.

[0010] Preferably, a connecting screw is fixedly connected to the inner wall of the rear side of the connecting outer frame, the front end of the connecting screw extends into the connecting internal threaded pipe, and the connecting screw is threadedly connected to the connecting internal threaded pipe.

[0011] Preferably, the connecting frame, the clamping plate, and the electrical connecting rod are all made of conductive metal materials.

[0012] Compared with related technologies, the lightweight combined transformer lead mechanism provided by the present invention has the following advantages: 1. This invention provides a lightweight combined transformer lead mechanism that replaces the traditional plastic gear and rack structure with a metal moving screw and moving block threaded engagement transmission method. This improves the mechanical strength and wear resistance of the transmission mechanism. The threaded engagement between the moving screw and moving block has a self-locking characteristic, effectively preventing unexpected gear shifting caused by equipment vibration. Simultaneously, the engagement between the drive worm gear and drive worm further enhances the stability and self-locking capability of the transmission, ensuring reliable position locking after gear switching.

[0013] 2. This invention provides a lightweight, modular transformer lead mechanism. The moving contact mechanism includes an independent abutment spring. This spring drives two upper and lower Z-shaped abutment plates, which then transmit pressure to the U-shaped electrical connection frame via a limiting frame and assembly block. Compared to the traditional integrated spring structure, this independent spring design allows for independent selection of the abutment spring, resulting in a longer fatigue life. After wear between the electrical connection frame and the electrical connection rod, the abutment spring automatically extends to compensate, maintaining stable contact pressure. Key components such as the electrical connection frame and abutment plates can be independently disassembled and replaced, reducing maintenance costs and downtime.

[0014] 3. This invention provides a lightweight combined transformer lead mechanism. The core transmission and support components of this device are all made of insulating materials, achieving effective electrical isolation between the metal transmission components and the live taps. This design, which isolates the metal transmission from the insulating material, ensures both the high strength and long lifespan of the transmission mechanism while avoiding the need for additional heavy insulating partitions, thus achieving a balance between lightweight design and high safety. Furthermore, the limiting plate, external threaded tube, and locking nut in the wiring mechanism are all made of insulating materials, enhancing the overall insulation reliability of the lead mechanism. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another angle; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view at point B in the middle; Figure 5 This is a three-dimensional structural diagram of the moving contact mechanism of the present invention; Figure 6 This is a partial structural diagram of the moving contact mechanism of the present invention; Figure 7 This is a schematic diagram showing the location of the electrical connection frame in this invention. Figure 8 A schematic diagram showing the location of the card slot in this invention; Figure 9 A schematic diagram showing the location of the connecting hole in this invention is provided. Figure 10 This is a schematic diagram showing the location of the positioning holes in the present invention; Figure 11 This is a schematic diagram of the wiring mechanism of the present invention; Figure 12 This is a three-dimensional cross-sectional view of the connection internal threaded pipe position of the present invention.

[0016] In the diagram: 1. Lead wire frame; 2. Moving contact mechanism; 201. Limiting frame; 202. Moving block; 203. Connecting pipe; 204. Mating groove; 205. Mating plate; 206. Connecting bolt; 207. Disassembly frame; 208. Abutment plate; 209. Limiting slide rod; 210. Abutment spring; 211. Electrical connection frame; 212. Abutment groove; 213. Limiting slide; 214. Limiting bracket; 215. Assembly block; 216. Elastic telescopic rod; 217. Snap-fit ​​plate; 218. 1. Limiting groove; 219. Snap-fit ​​groove; 3. Moving mechanism; 301. Moving lead screw; 302. Driving worm gear; 303. Auxiliary plate; 304. Rotating rod; 305. Driving worm gear; 4. Wiring mechanism; 401. Electrical connecting rod; 402. Limiting plate; 403. Positioning rod; 404. External threaded tube; 405. Locking nut; 406. Connecting outer frame; 407. Connecting screw; 408. Connecting internal threaded tube; 409. Pressing plate; 410. Positioning hole; 5. Connecting hole. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1:

[0019] Please see Figure 1 - Figure 8 The present invention provides a technical solution: a lightweight combined transformer lead wire mechanism, including a lead wire frame 1, a moving mechanism 3 is provided inside the lead wire frame 1, a moving contact mechanism 2 is provided on the moving mechanism 3, and three sets of connection mechanisms are provided on the front side wall of the lead wire frame 1. Each set of connection mechanisms is provided with several wiring mechanisms 4. The three sets of connection mechanisms correspond to the A, B, and C phase windings of the transformer, respectively. The several wiring mechanisms 4 in each set of connection mechanisms correspond to multiple voltage taps of each phase winding, thereby realizing independent adjustment and synchronous control of the three-phase voltage. The moving mechanism 3 includes a moving screw 301 located inside the lead frame 1. The left and right ends of the moving screw 301 are rotatably connected to the left and right inner walls of the lead frame 1, respectively. The moving screw 301 is made of metal, and its surface thread is engaged with the internal thread of the connecting pipe 203 to form a self-locking transmission pair. In the working state, it can resist the reverse driving force generated by equipment vibration, thereby avoiding gear shift. The moving contact mechanism 2 includes a moving block 202. A limiting frame 201 is fixedly connected to the rear end of the moving block 202. The limiting frame 201 is slidably connected to the rear wall of the lead frame 1. The sliding fit between the limiting frame 201 and the rear wall of the lead frame 1 forms a linear guide structure, which restricts the moving block 202 to only move axially under the drive of the moving screw 301, preventing rotational motion from interfering with the contact alignment accuracy. A connecting pipe 203 is provided in the middle of the moving block 202, penetrating both ends. The connecting pipe 203 is sleeved on the moving screw 301 and threadedly connected to the moving screw 301. A mating groove 204 is provided at the front end of the moving block 202. A mating plate 205 is provided inside the mating groove 204. A mating plate 205 is provided on the top of the moving block 202. There is a connecting bolt 206. The lower end of the connecting bolt 206 passes through the upper side wall of the mating groove 204 and the mating plate 205 in sequence and is threaded to the lower side wall of the mating groove 204. The connecting bolt 206 detachably fixes the mating plate 205 in the mating groove 204. When the moving contact mechanism 2 needs maintenance or replacement, only the connecting bolt 206 needs to be removed to remove the disassembly frame 207 together with the internal abutting mechanism. There is no need to disassemble the moving screw 301 and the moving block 202, which greatly reduces the maintenance difficulty and downtime. The disassembly frame 207 is fixedly connected to the front end of the mating plate 205. An abutting mechanism is provided inside the disassembly frame 207. An electrically connected frame 211 is symmetrically arranged inside the abutting mechanism. The abutment mechanism includes two symmetrically arranged Z-shaped abutment plates 208. A limiting slide rod 209 is fixedly connected to the upper inner wall of the disassembly frame 207. The lower end of the limiting slide rod 209 passes through the two abutment plates 208 and is fixedly connected to the lower inner wall of the disassembly frame 207. The limiting slide rod 209 passes through the two abutment plates 208, constraining the abutment plates 208 to move only along the axial direction of the limiting slide rod 209, preventing the abutment plates 208 from laterally deflecting or tilting under the pressure of the spring, and ensuring that the upper and lower electrical connection frames 211 always remain parallel. In the alignment state, two abutment springs 210 are sleeved on the limiting slide rod 209. The adjacent ends of the two abutment springs 210 are fixedly connected to the two abutment plates 208 away from each other's side walls. The ends of the two abutment springs 210 away from each other are fixedly connected to the upper and lower inner walls of the disassembly frame 207. The two abutment springs 210 act independently on the upper and lower abutment plates 208. When the contact surface of the electrical connection frame 211 is worn, the corresponding spring automatically extends to compensate, maintaining a constant contact pressure, thereby ensuring the electrical connection effect. A limiting slide 213 is provided on the abutment plate 208. Two limiting brackets 214 are provided on the opposite side of each abutment plate 208. The end of the limiting bracket 214 near the electrical connection frame 211 passes through the limiting slide 213 and is fixedly connected to the assembly block 215. The limiting bracket 214 passes through the limiting slide 213 and can move along the slide direction. When the electrical connection frame 211 needs to be installed or removed, the distance between the two assembly blocks 215 can be adjusted by pushing the limiting bracket 214, so as to quickly clamp and release the U-shaped electrical connection frame 211. An elastic telescopic rod is provided between the two assembly blocks 215. 216, the left and right ends of the elastic telescopic rod 216 are fixedly connected to the adjacent side walls of the two assembly blocks 215 respectively. In its natural state, the elastic telescopic rod 216 is in a compressed state, applying an outward thrust to the two assembly blocks 215, causing the limiting groove 218 on the assembly block 215 to elastically abut against the left and right side walls of the electrical connection frame 211, eliminating the fit gap between the assembly block 215 and the electrical connection frame 211, and preventing relative displacement under vibration. Both assembly blocks 215 are located within the electrical connection frame 211, which is U-shaped. 1. Two abutment grooves 212 are provided on each adjacent side. The electrical connecting rod 401 is located in the abutment grooves 212 on the two electrical connecting frames 211. The electrical connection between the adjacent electrical connecting rods 401 is achieved under the action of the electrical connecting frames 211. Limiting grooves 218 are provided on the opposite side of the two assembly blocks 215. The inner wall of the adjacent side of the two limiting grooves 218 is provided with a snap-fit ​​groove 219. The left and right side walls of the electrical connecting frame 211 are respectively located in the two limiting grooves 218. Snap-fit ​​plates 217 are fixedly connected to the inner walls of the left and right side walls of the electrical connecting frame 211. The left and right snap-fit ​​plates 219 are fixedly connected to the inner walls of the left and right side walls of the electrical connecting frame 211. 17 One adjacent end extends into the left and right snap-fit ​​slots 219 respectively. The abutment plate 208, limit frame 214, assembly block 215, disassembly frame 207, moving block 202 and limit frame 201 are all made of insulating materials. The insulating materials include, but are not limited to, glass fiber reinforced flame retardant engineering plastic, SMC sheet molding compound or epoxy glass cloth laminate. The abutment plate 208, limit frame 214, assembly block 215, disassembly frame 207, moving block 202 and limit frame 201 are all non-electric. Together with the metal moving screw 301, they form a metal transmission and insulating electrical safety structure. The left and right sides of the electrical connection frame 211 are inclined to the left and right sides respectively at the end near the abutment plate 208. The inclined structure design plays a guiding role when the electrical connection frame 211 contacts the electrical connection rod 401. When the moving contact mechanism 2 moves to the target position, the inclined surface guides the electrical connection rod 401 to slide smoothly between the two electrical connection frames 211, avoiding mechanical impact and contact jump caused by hard collision. Two auxiliary plates 303 are fixedly connected to the inner right wall of the lead frame 1. A rotating rod 304 is rotatably connected to the upper end of the lower auxiliary plate 303. The upper end of the rotating rod 304 passes through the upper auxiliary plate 303 and extends to the top of the lead frame 1. A driving worm gear 302 is fixedly connected to the movable lead screw 301. A driving worm 305 is fixedly connected to the rotating rod 304. The driving worm 305 is located between the two auxiliary plates 303. The driving worm 305 is adapted to the driving worm gear 302. The driving worm 305 and the driving worm gear 302 form a worm gear self-locking transmission structure. During operation, rotating the rotating rod 304 drives the driving worm 305 to rotate. The driving worm 305 drives the driving worm gear 302 and the movable lead screw 301 to rotate. Since the worm gear structure has a one-way self-locking characteristic, external vibration cannot be transmitted from the movable lead screw 301 to the rotating rod 304 in the reverse direction, thus realizing gear locking.

[0020] Example 2:

[0021] Please see Figure 9 - Figure 12 As shown, based on Embodiment 1, the present invention provides a technical solution: a connection hole 5 is provided on the rear side of the wiring mechanism 4 and on the front side wall of the lead frame 1. The wiring mechanism 4 includes an electrical connecting rod 401. The rear end of the electrical connecting rod 401 extends through the connection hole 5 into the lead frame 1. The rear end of the electrical connecting rod 401 serves as a stationary contact, and its end face forms a planar contact fit with the electrical connecting frame 211 in the moving contact mechanism 2. When the moving contact moves to the corresponding position, the upper and lower electrical connecting frames 211 clamp the rear end of the electrical connecting rod 401 from the upper and lower directions, respectively, to achieve reliable circuit connection. Positioning holes 410 are provided on the left and right sides of the connection hole 5 and on the front inner wall of the lead frame 1. A limit plate 402 is fixedly connected to the electrical connecting rod 401 to limit its movement. The size of plate 402 is smaller than that of connecting hole 5. The design of limiting plate 402 being smaller than that of connecting hole 5 allows the electrical connecting rod 401 to pass through the connecting hole 5 from the front side of lead frame 1 during installation. After the limiting plate 402 passes through the connecting hole 5, it can be rotated at a certain angle to lock behind the inner wall of the front side of lead frame 1, achieving initial positioning. Two positioning rods 403 are fixedly connected to the front end of the limiting plate 402. The front end of the positioning rod 403 extends into the positioning hole 410. An external threaded tube 404 is fixedly connected to the electrical connecting rod 401. A locking nut 405 is threadedly connected to the external threaded tube 404. The rear end of the locking nut 405 abuts against the front end of lead frame 1. When the locking nut 405 is tightened, it cooperates with the positioning rod 403 and the positioning hole 410 to achieve the connection between lead frame 1 and electrical connecting rod 401. The limiting plate 402, the external threaded tube 404, and the locking nut 405 are all made of insulating materials. The limiting plate 402, the external threaded tube 404, and the locking nut 405 made of insulating materials form an electrical isolation between the electrical connecting rod 401 and the lead frame 1. Even if the electrical connecting rod 401 carries high voltage, it will not be conducted to the lead frame 1 through the locking nut 405, thus ensuring the safety of the operator. The front end of the electrical connecting rod 401 is fixedly connected to the connecting outer frame 406. The front side of the connecting outer frame 406 is provided with a connecting internal thread tube 408. The rear end of the connecting internal thread tube 408 passes through the front side wall of the connecting outer frame 406 and extends into the connecting outer frame 406. A pressure plate 409 is slidably connected inside the connecting outer frame 406. The rear end of the connecting internal thread tube 408 passes through the pressure plate 409 and is rotatably connected to the pressure plate 409. The pressure plate 409 can slide back and forth inside the connecting outer frame 406. When the connecting internal thread tube 408 rotates, the pressure plate 409 moves back and forth with the connecting internal thread tube 408 but does not rotate with the connecting internal thread tube 408, thereby realizing the pressing and releasing of the external wire inserted into the connecting outer frame 406. A connecting screw 407 is fixedly connected to the inner wall of the rear side of the connecting outer frame 406. The front end of the connecting screw 407 extends into the connecting internal threaded tube 408. The connecting screw 407 is threadedly connected to the connecting internal threaded tube 408. In use, the tap passes through one side of the connecting screw 407 and exits from the other side of the connecting screw 407. The connecting screw 407 is located inside the tap, thereby preventing the tap from sliding out of the connecting outer frame 406. The connecting frame 406, the clamping plate 409, and the electrical connecting rod 401 are all made of conductive metal. The connecting frame 406 and the electrical connecting rod 401 are connected by an integral or welded conductive connection. After the external wire is inserted into the connecting frame 406, it passes through the clamping plate 409, the connecting frame 406, and the electrical connecting rod 401 in sequence to form a low-resistance conductive path, ensuring the high efficiency and reliability of current transmission.

[0022] Working principle: In use, place the tap on the winding inside the connecting outer frame 406, pass it through one side of the connecting screw 407 and out the other side of the connecting screw 407, rotate the connecting inner thread tube 408, push the clamping plate 409 to move towards the tap, and clamp the tap by cooperating with the rear side wall of the connecting outer frame 406 through the clamping plate 409, thereby realizing the electrical connection between the tap, the connecting outer frame 406 and the electrical connecting rod 401; insert the rear end of the electrical connecting rod 401 and the limiting plate 402 into the connecting hole 5, move the limiting plate 402 and the positioning rod 403 to the inside of the lead frame 1 and rotate them, and pull the electrical connecting rod 401 forward. After the positioning rod 403 cooperates with the positioning hole 410, rotate the locking nut 405. The locking nut 405 abuts against the front side wall of the lead frame 1 to fix the position of the electrical connecting rod 401; The electrical connecting rod 401 is located in the abutment groove 212 on the two electrical connecting frames 211. Under the action of the electrical connecting frame 211, the electrical connection between adjacent electrical connecting rods 401 is realized. Under the action of the abutment spring 210, the two abutment plates 208 are pushed closer to each other, thereby ensuring that the upper and lower electrical connecting frames 211 are always in contact with the electrical connecting rod 401. When a voltage transformation operation is required, rotating the rotating rod 304 causes the moving screw 301 to rotate in cooperation with the driving worm 305 and the driving worm wheel 302. In cooperation with the moving screw 301 and the connecting pipe 203, the limiting frame 201 and the moving block 202 move synchronously, thereby causing the abutment mechanism and the two electrical connection frames 211 to switch positions, thereby realizing the electrical connection of other adjacent taps and thus realizing the regulation of the output voltage. When the electrical connection frame 211 is damaged due to frequent voltage adjustments during long-term use and needs to be replaced, the connection bolt 206 can be removed to slide the disassembly frame 207 to the right, and the two limit brackets 214 will be squeezed, compressing the elastic telescopic rod 216. After the two left and right snap plates 217 are removed from the snap grooves 219, the electrical connection frame 211 can be removed for replacement. After the limit brackets 214 are released, the limit grooves 218 on the two left and right assembly blocks 215 cooperate with the electrical connection blocks under the action of the elastic telescopic rod 216. When the snap plates 217 cooperate with the snap grooves 219, the two left and right limit brackets 214 are separated by one end and abut against the inner walls of the left and right sides of the limit slide 213 respectively. During voltage adjustment, the inclined setting of the left and right side walls of the electrical connection frame 211 ensures that the outer electrical connection rod 401 can slide smoothly into the two electrical connection frames 211.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight combined transformer lead mechanism, comprising a lead frame (1), characterized in that: The lead frame (1) is provided with a moving mechanism (3) inside, and a moving contact mechanism (2) is provided on the moving mechanism (3). Three sets of connecting mechanisms are provided on the front side wall of the lead frame (1), and each set of connecting mechanisms is provided with several wiring mechanisms (4). The moving mechanism (3) includes a moving screw (301) located inside the lead frame (1), and the left and right ends of the moving screw (301) are rotatably connected to the left and right inner walls of the lead frame (1), respectively. The moving contact mechanism (2) includes a moving block (202), the rear end of which is fixedly connected to a limiting frame (201). The limiting frame (201) is slidably connected to the rear side wall of the lead frame (1). A connecting pipe (203) is provided in the middle of the moving block (202) with both ends passing through it. The connecting pipe (203) is sleeved on the moving screw (301) and threadedly connected to the moving screw (301). A mating groove (204) is provided at the front end of the moving block (202). 204) An inner mating plate (205) is provided, and a connecting bolt (206) is provided above the moving block (202). The lower end of the connecting bolt (206) passes through the upper side wall of the mating groove (204) and the mating plate (205) in sequence and is threadedly connected to the lower side wall of the mating groove (204). A disassembly frame (207) is fixedly connected to the front end of the mating plate (205). An abutting mechanism is provided inside the disassembly frame (207). An electrical connection frame (211) is provided symmetrically arranged above and below inside the abutting mechanism. The abutting mechanism includes two symmetrically arranged Z-shaped abutting plates (208). A limiting slide rod (209) is fixedly connected to the upper inner wall of the disassembly frame (207). The lower end of the limiting slide rod (209) passes through the two abutting plates (208) and is fixedly connected to the lower inner wall of the disassembly frame (207). Two abutting springs (210) are sleeved on the limiting slide rod (209). The adjacent ends of the two abutting springs (210) are fixedly connected to the two abutting plates (208) respectively, away from each other's side walls. The ends of the two abutting springs (210) that are away from each other are fixedly connected to the upper and lower inner walls of the disassembly frame (207) respectively. The abutment plate (208) has a limiting slide (213). Two limiting frames (214) are provided on the opposite side of each abutment plate (208). The end of each limiting frame (214) near the electrical connection frame (211) passes through the limiting slide (213) and is fixedly connected to an assembly block (215). An elastic telescopic rod (216) is provided between the two assembly blocks (215). The left and right ends of the elastic telescopic rod (216) are fixedly connected to the adjacent sidewalls of the two assembly blocks (215), respectively. Both assembly blocks (215) are located within the electrical connection frame (211). The electrical connection frame (211) is U-shaped, and two limiting frames (211) are provided on adjacent sides. Two abutment grooves (212) are provided, and two assembly blocks (215) are provided with limiting grooves (218) on the opposite side. The inner walls of the two limiting grooves (218) are provided with snap-fit ​​grooves (219). The left and right side walls of the electrical connection frame (211) are respectively located in the two limiting grooves (218). The inner walls of the left and right side walls of the electrical connection frame (211) are fixedly connected with snap-fit ​​plates (217). The adjacent ends of the two snap-fit ​​plates (217) extend into the two snap-fit ​​grooves (219). The abutment plate (208), the limiting frame (214), the assembly block (215), the disassembly frame (207), the moving block (202), and the limiting frame (201) are all made of insulating material.

2. The lightweight combined transformer lead mechanism according to claim 1, characterized in that: Two auxiliary plates (303) are fixedly connected to the inner right side of the lead frame (1). A rotating rod (304) is rotatably connected to the upper end of the lower auxiliary plate (303). The upper end of the rotating rod (304) passes through the upper auxiliary plate (303) and extends to the top of the lead frame (1). A driving worm gear (302) is fixedly connected to the moving screw (301). A driving worm (305) is fixedly connected to the rotating rod (304). The driving worm (305) is located between the two auxiliary plates (303). The driving worm (305) is adapted to the driving worm gear (302).

3. The lightweight combined transformer lead mechanism according to claim 1, characterized in that: The wiring mechanism (4) has a connection hole (5) on the front wall of the lead frame (1) on its rear side. The wiring mechanism (4) includes an electrical connecting rod (401). The rear end of the electrical connecting rod (401) extends through the connection hole (5) into the lead frame (1). Positioning holes (410) are provided on both the left and right sides of the connection hole (5) on the inner front wall of the lead frame (1). A limit plate (402) is fixedly connected to the electrical connecting rod (401). The size of the limiting plate (402) is smaller than the size of the connecting hole (5). Two positioning rods (403) are fixedly connected to the front end of the limiting plate (402). The front end of the positioning rod (403) extends into the positioning hole (410). An external threaded tube (404) is fixedly connected to the electrical connecting rod (401). A locking nut (405) is threaded onto the external threaded tube (404). The rear end of the locking nut (405) abuts against the front end of the lead frame (1).

4. The lightweight combined transformer lead mechanism according to claim 3, characterized in that: The limiting plate (402), the external threaded tube (404), and the locking nut (405) are all made of insulating materials.

5. A lightweight combined transformer lead mechanism according to claim 4, characterized in that: The front end of the electrical connecting rod (401) is fixedly connected to a connecting outer frame (406). A connecting internal thread tube (408) is provided on the front side of the connecting outer frame (406). The rear end of the connecting internal thread tube (408) passes through the front side wall of the connecting outer frame (406) and extends into the connecting outer frame (406). A pressure plate (409) is slidably connected inside the connecting outer frame (406). The rear end of the connecting internal thread tube (408) passes through the pressure plate (409) and is rotatably connected to the pressure plate (409).

6. A lightweight combined transformer lead mechanism according to claim 5, characterized in that: A connecting screw (407) is fixedly connected to the inner wall of the rear side of the connecting outer frame (406). The front end of the connecting screw (407) extends into the connecting internal threaded tube (408), and the connecting screw (407) is threadedly connected to the connecting internal threaded tube (408).

7. A lightweight combined transformer lead mechanism according to claim 6, characterized in that: The connecting frame (406), the clamping plate (409), and the electrical connecting rod (401) are all made of conductive metal.

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