Dry-type transformer iron core clamping structure
Through the innovative design of the dry-type transformer core clamping structure, the meshing transmission of ratchet and pawl is used to achieve rapid clamping and disassembly, which solves the problems of difficult disassembly and assembly and loosening of traditional transformer cores, and improves the stability and insulation of the equipment.
Patent Information
- Application Number
- CN202423125901.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The clamping structure of traditional transformer cores requires the operation of multiple fixing bolts during disassembly and assembly, making disassembly and assembly difficult and prone to loosening due to vibration.
A dry-type transformer core clamping structure is adopted, which uses components such as outer sleeve, telescopic rod, gear, ratchet, and pawl to achieve rapid clamping and disassembly of the core. Positioning is achieved through the meshing transmission of ratchet and pawl, and an oil storage box is set inside the outer sleeve to prevent steel rope from rusting and improve insulation.
It reduces the difficulty of disassembling and assembling the transformer core, prevents loosening, and improves the stability and insulation of the equipment.
Smart Images
Figure CN223552370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical equipment technology, and in particular to a dry-type transformer core clamping structure. Background Technology
[0002] The transformer core is the magnetic circuit part of the transformer. It is usually made of hot-rolled or cold-rolled silicon steel sheets with a high silicon content and an insulating varnish coating. The core and the coils wound around it form a complete electromagnetic induction system. The power transmitted by a power transformer depends on the material and cross-sectional area of the core. As the backbone of the core, the tightness of the core rods directly affects the overall noise level and structural stability of the transformer. Therefore, clamping assemblies are needed to fix the core during assembly.
[0003] However, the traditional bolt and clamp fixing method requires the operation of multiple fixing bolts during installation and disassembly, which increases the difficulty of assembly and disassembly. Since the transformer will vibrate during operation, the bolts and nuts are very easy to loosen and detach. Therefore, a dry-type transformer core clamping structure is proposed. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a dry-type transformer core clamping structure.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dry-type transformer core clamping structure, comprising a base and a top plate, wherein a plurality of torsion bars are fixedly provided between the base and the top plate, the same core body is provided between the base and the top plate, and two locking structures are provided between the base and the top plate.
[0006] As a further description of the above technical solution:
[0007] The locking structure includes an outer tube fixedly connected to the base, a telescopic rod movably disposed within the outer tube, a gear movably disposed within the outer tube, a connecting shaft fixedly disposed on the front side of the gear, one end of the connecting shaft penetrating the inner wall of the front side of the outer tube and fixedly disposed on a ratchet, a mounting block fixedly disposed on the front side of the outer tube, a positioning shaft movably disposed on the mounting block, a pawl fixedly disposed on the positioning shaft, a limiting plate fixedly disposed on the front side of the outer tube, a pull rod movably disposed on the limiting plate, a pull ring fixedly disposed at one end of the pull rod, and a rust-proof component fixedly disposed on the front side of the outer tube.
[0008] As a further description of the above technical solution:
[0009] Multiple toothed blocks are fixed on one side of the telescopic rod, and the toothed blocks mesh with gears for transmission.
[0010] As a further description of the above technical solution:
[0011] The outer sleeve has grooves on both the front and back inner walls. The telescopic rod has limiting strips fixedly installed on both the front and back sides. The limiting strips are movably connected to the grooves. The bottom of the telescopic rod has a spring fixedly installed. The bottom of the spring is fixedly connected to the bottom inner wall of the outer sleeve.
[0012] As a further description of the above technical solution:
[0013] The mounting block has a mounting groove on one side, and a mounting hole on the inner wall of one side of the mounting groove. A bearing is fixedly installed in the mounting hole, and the inner ring of the bearing is fixedly sleeved on the positioning shaft. A coil spring is fixedly installed in the mounting groove, and the inner ring of the coil spring is fixedly connected to the positioning shaft.
[0014] As a further description of the above technical solution:
[0015] A steel rope is fixedly installed at the end of the pull rod near the pawl, and the end of the steel rope away from the pull rod is fixedly connected to the pawl.
[0016] As a further description of the above technical solution:
[0017] The rust prevention component includes an oil reservoir box fixedly connected to the outer sleeve, the oil reservoir box is filled with a sponge, and an oil injection pipe is fixedly installed on the top of the oil reservoir box.
[0018] As a further description of the above technical solution:
[0019] Both sides of the inner wall of the oil storage box are provided with through holes, which are compatible with steel ropes.
[0020] This utility model has the following beneficial effects:
[0021] 1. Compared with existing technologies, this dry-type transformer core clamping structure, through the installation of an outer sleeve, telescopic rod, toothed block, spring, gear, ratchet, mounting block, coil spring, positioning shaft, pawl, limit plate, pull rod, steel rope, and pull ring, presses down the top plate. The top plate drives the telescopic rod to rotate the gear, which in turn drives the ratchet. The ratchet groove on the ratchet pushes the pawl outward. The pawl drives the coil spring through the positioning shaft. When the pawl disengages from the current ratchet groove, the coil spring returns to its original position and drives the positioning shaft. The positioning shaft then drives the pawl to engage with the ratchet groove of the ratchet. The internal mechanism effectively prevents the ratchet from rotating clockwise, thus positioning the telescopic rod. Once the top plate is in contact with the top of the iron core body and clamps the iron core body, the pressing can be stopped. To disassemble, pull the pull ring outward. The pull ring drives the steel rope, which pulls the pawl outward, causing it to disengage from the ratchet groove. At this point, under the thrust of the torsion bar, the top plate moves upward and separates from the iron core body, allowing the iron core body to be removed. This replaces the traditional method of fixing with bolts and a fixing plate, reducing the difficulty of disassembling and assembling the equipment and preventing the equipment from becoming loose.
[0022] 2. Compared with the existing technology, the core clamping structure of this dry-type transformer, by setting up an oil storage box, through hole, sponge and oil injection pipe, allows the steel rope to stick to the sponge when the pull ring is pulled. The hydraulic tank oil in the sponge can adhere to the surface of the steel rope, which can not only prevent the steel rope from rusting, but also improve the insulation of the steel rope. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of a dry-type transformer core clamping structure proposed in this utility model.
[0024] Figure 2 This is a front sectional view of the anti-rust component in the core clamping structure of a dry-type transformer proposed in this utility model;
[0025] Figure 3 This is a three-dimensional schematic diagram of the locking structure in a dry-type transformer core clamping structure proposed in this utility model.
[0026] Figure 4 This is a side sectional view of the locking structure in the core clamping structure of a dry transformer proposed in this utility model.
[0027] Figure 5 This is a schematic diagram showing the separation of the mounting block and the positioning shaft in a dry-type transformer core clamping structure proposed in this utility model.
[0028] Legend:
[0029] 1. Base; 2. Top plate; 3. Torsion bar; 4. Iron core body; 5. Locking structure; 501. Outer sleeve; 502. Telescopic rod; 503. Tooth block; 504. Spring; 505. Gear; 506. Ratchet; 507. Mounting block; 508. Coil spring; 509. Positioning shaft; 510. Pawl; 511. Limiting plate; 512. Pull rod; 513. Steel rope; 514. Pull ring; 6. Rust prevention components; 601. Oil reservoir; 602. Through hole; 603. Sponge; 604. Oil injection pipe. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Reference Figures 1 to 5The present invention provides a dry-type transformer core clamping structure, which includes a base 1 and a top plate 2, a plurality of torsion bars 3 fixed between the base 1 and the top plate 2, and the same core body 4 between the base 1 and the top plate 2.
[0032] To reduce the difficulty of disassembly and assembly, two locking structures 5 are provided between the base 1 and the top plate 2. Each locking structure 5 includes an outer sleeve 501 fixedly connected to the base 1. A telescopic rod 502 is movably mounted inside the outer sleeve 501. Grooves are provided on both the front and back inner walls of the outer sleeve 501. Limiting strips are fixedly mounted on both the front and back of the telescopic rod 502, and are movably connected to the grooves. A spring 504 is fixedly mounted at the bottom of the telescopic rod 502, and the bottom of the spring 504 is fixedly connected to the bottom inner wall of the outer sleeve 501. A gear 505 is movably mounted inside the outer sleeve 501. Multiple toothed blocks 503 are fixedly mounted on one side of the telescopic rod 502, and the toothed blocks 503 and gear 505 mesh and transmit power. A connecting shaft is fixedly provided on the front of the outer sleeve 501. One end of the connecting shaft passes through the inner wall of the front of the outer sleeve 501 and is fixedly provided with a ratchet 506. A mounting block 507 is fixedly provided on the front of the outer sleeve 501. A positioning shaft 509 is movably provided on the mounting block 507. A mounting groove is provided on one side of the mounting block 507. A mounting hole is provided on the inner wall of one side of the mounting groove. A bearing is fixedly provided in the mounting hole. The inner ring of the bearing is fixedly sleeved on the positioning shaft 509. A coil spring 508 is fixedly provided in the mounting groove. The inner ring of the coil spring 508 is fixedly connected to the positioning shaft 509. A pawl 510 is fixedly provided on the positioning shaft 509. A limiting plate 511 is fixedly provided on the front of the outer sleeve 501. A pull rod 512 is movably provided on the limiting plate 511. 2. A steel rope 513 is fixedly installed at one end near the pawl 510. The end of the steel rope 513 away from the pull rod 512 is fixedly connected to the pawl 510. A pull ring 514 is fixedly installed at one end of the pull rod 512. When the top plate 2 is pressed down, the top plate 2 squeezes the output end of the torsion bar 3 and drives the two telescopic rods 502 to move down. The telescopic rods 502 drive multiple tooth blocks 503. The tooth blocks 503 drive the gear 505 to rotate counterclockwise. The gear 505 then drives the ratchet 506. The ratchet groove on the ratchet 506 pushes the pawl 510 outward. The pawl 510 will drive the coil spring 508 through the positioning shaft 509. When the pawl 510 disengages from the current ratchet groove, the coil spring 508 returns to its original position and drives the positioning shaft 509. 509 then drives the pawl 510 to engage in the ratchet groove of the ratchet 506, effectively preventing the ratchet 506 from rotating clockwise and positioning the telescopic rod 502. Once the top plate 2 is in contact with the top of the iron core body 4 and clamps the iron core body 4, the pressing can be stopped. When the iron core body 4 needs to be disassembled, the pull ring 514 is pulled outward. The pull ring 514 drives the steel rope 513, which pulls the pawl 510 outward, causing it to disengage from the ratchet groove. At this time, under the thrust of the torsion bar 3, the top plate 2 moves upward and separates from the iron core body 4, and then the iron core body 4 can be removed. This replaces the traditional bolt and fixing plate fixing mode, which can reduce the difficulty of disassembling and assembling the equipment and prevent the equipment from becoming loose.
[0033] To achieve rust prevention, a rust-preventive component 6 is fixedly provided on the front of the outer sleeve 501. The rust-preventive component 6 includes an oil reservoir 601 fixedly connected to the outer sleeve 501. A sponge 603 is provided inside the oil reservoir 601. An oil injection pipe 604 is fixedly provided on the top of the oil reservoir 601. Both sides of the inner wall of the oil reservoir 601 are provided with through holes 602. The through holes 602 are adapted to the steel rope 513. When the pull ring 514 is pulled, the steel rope 513 adheres to the sponge 603. The hydraulic tank oil in the sponge 603 can adhere to the surface of the steel rope 513, which can not only prevent the steel rope 513 from rusting, but also improve the insulation of the steel rope 513.
[0034] Working principle: First, hydraulic oil is injected into the oil reservoir 601. When the iron core body 4 needs to be clamped, the iron core body 4 is first placed between the top plate 2 and the base 1. Then, the top plate 2 is pressed down. The top plate 2 squeezes the output end of the torsion bar 3 and drives the two telescopic rods 502 to move down. The telescopic rods 502 drive multiple tooth blocks 503. The tooth blocks 503 drive the gear 505 to rotate counterclockwise. The gear 505 then drives the ratchet 506. The ratchet groove on the ratchet 506 pushes the pawl 510 outward. The pawl 510 will drive the coil spring 508 through the positioning shaft 509. When the pawl 510 disengages from the current ratchet groove, the coil spring 508 returns to its original position and drives the positioning shaft 509. The positioning shaft 509 then drives the pawl 510 to engage with the ratchet of the ratchet 506. Inside the groove, the ratchet 506 can be effectively prevented from rotating clockwise, thus positioning the telescopic rod 502. When the top plate 2 is in contact with the top of the iron core body 4 to clamp the iron core body 4, the pressing can be stopped. When the iron core body 4 needs to be disassembled, the pull ring 514 is pulled outward. The pull ring 514 drives the steel rope 513, which pulls the pawl 510 outward, causing it to disengage from the ratchet groove. At this time, under the thrust of the torsion bar 3, the top plate 2 moves upward and separates from the iron core body 4, and then the iron core body 4 can be removed. When the pull ring 514 is pulled, the steel rope 513 is in contact with the sponge 603. The hydraulic oil in the sponge 603 can adhere to the surface of the steel rope 513, which not only prevents the steel rope 513 from rusting, but also improves the insulation of the steel rope 513.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A dry-type transformer core clamping structure, comprising a base (1) and a top plate (2), characterized in that: Multiple torsion bars (3) are fixed between the base (1) and the top plate (2), the same iron core body (4) is provided between the base (1) and the top plate (2), and two locking structures (5) are provided between the base (1) and the top plate (2).
2. The dry-type transformer core clamping structure according to claim 1, characterized in that: The locking structure (5) includes an outer tube (501) fixedly connected to the base (1). A telescopic rod (502) is movably provided inside the outer tube (501). A gear (505) is movably provided inside the outer tube (501). A connecting shaft is fixedly provided on the front side of the gear (505). One end of the connecting shaft passes through the inner wall of the front side of the outer tube (501) and is fixedly provided with a ratchet (506). An installation block (507) is fixedly provided on the front side of the outer tube (501). A positioning shaft (509) is movably provided on the installation block (507). A pawl (510) is fixedly provided on the positioning shaft (509). A limiting plate (511) is fixedly provided on the front side of the outer tube (501). A pull rod (512) is movably provided on the limiting plate (511). A pull ring (514) is fixedly provided at one end of the pull rod (512). A rust-proof component (6) is fixedly provided on the front side of the outer tube (501).
3. The dry-type transformer core clamping structure according to claim 2, characterized in that: Multiple toothed blocks (503) are fixedly provided on one side of the telescopic rod (502), and the toothed blocks (503) and gears (505) mesh and drive each other.
4. The dry-type transformer core clamping structure according to claim 2, characterized in that: The outer tube (501) has grooves on both the front and back inner walls. The telescopic rod (502) has a limiting strip fixedly installed on both the front and back sides. The limiting strip is movably connected to the groove. The bottom of the telescopic rod (502) is fixedly provided with a spring (504). The bottom of the spring (504) is fixedly connected to the bottom inner wall of the outer tube (501).
5. The dry-type transformer core clamping structure according to claim 2, characterized in that: The mounting block (507) has a mounting groove on one side, and a mounting hole is provided on the inner wall of one side of the mounting groove. A bearing is fixedly installed in the mounting hole, and the inner ring of the bearing is fixedly sleeved on the positioning shaft (509). A coil spring (508) is fixedly installed in the mounting groove, and the inner ring of the coil spring (508) is fixedly connected to the positioning shaft (509).
6. The dry-type transformer core clamping structure according to claim 2, characterized in that: A steel rope (513) is fixedly provided at one end of the pull rod (512) near the pawl (510), and the end of the steel rope (513) away from the pull rod (512) is fixedly connected to the pawl (510).
7. The dry-type transformer core clamping structure according to claim 6, characterized in that: The rust prevention component (6) includes an oil storage box (601) fixedly connected to the outer sleeve (501), the oil storage box (601) is provided with a sponge (603), and the top of the oil storage box (601) is fixedly provided with an oil injection pipe (604).
8. The dry-type transformer core clamping structure according to claim 7, characterized in that: The oil storage box (601) has through holes (602) on both sides of its inner wall, and the through holes (602) are compatible with the steel rope (513).