Low-noise and low-vibration transformer iron core with large R angle and processing technology of low-noise and low-vibration transformer iron core

Abstract

The invention relates to the technical field of transformer iron cores, in particular to an iron core for a low-noise and low-vibration transformer with a large R angle and a processing technology of the iron core. Comprising an iron core body, a winding, first clamping pieces and a second clamping piece, the iron core body is composed of an iron yoke and a core column, the two first clamping pieces oppositely clamp the iron yoke, a plurality of lead screws are arranged on the faces, away from the iron yoke, of the first clamping pieces, a nut assembly is arranged on the second clamping piece, and the nut assembly is composed of a nut and a fixator. Nuts in the nut assemblies are in threaded connection with the lead screws making contact with the nuts. Through cooperation of the lead screw and the nut, vibration of the transformer iron core can be reduced, the vibration of the iron core is limited in the arrangement direction of the lead screw, when the iron core vibrates, the iron core body drives the first clamping piece to do transverse reciprocating motion, the lead screw is driven to do reciprocating motion back and forth, the nut is driven to rotate, and force generated by vibration is converted into force for rotation of the nut; and the vibration amplitude is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of transformer cores, in particular to a transformer core with a large R angle and low noise and vibration, and a processing technology thereof. Background Art

[0002] The iron core is made of silicon steel sheets coated with an insulating layer and fixed with clamps. The silicon steel sheets will vibrate when working. If the clamping accessories are poorly tightened or loose after a long time, the silicon steel sheets will vibrate greatly, which will drive the clamps and even the transformer box to vibrate. The silicon steel sheets affected by the vibration of the transformer box and clamps will collide with each other, and the silicon steel sheets will collide with the clamps, etc., thus generating greater noise. Therefore, a transformer iron core that can reduce the vibration of silicon steel sheets and reduce the noise generation is needed. Summary of the invention

[0003] The object of the present invention is to provide a low-noise and low-vibration transformer core with a large R angle and a processing technology thereof to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an iron core with a large R angle for a low-noise and low-vibration transformer comprises an iron core body, a winding, a first clamp, and a second clamp, wherein the iron core body is composed of an iron yoke and a core column, the core column is vertically arranged, the winding is wound on the core column, the iron yoke connects the horizontal part of the iron core column to form a closed magnetic circuit, two first clamps clamp the iron yoke oppositely, and the first clamps at the same horizontal position are fixedly connected by fasteners, a plurality of lead screws are arranged on a side of the first clamp away from the iron yoke, the second clamp is arranged closely on a side of the first clamp away from the winding, and the angle between the second clamp and the first clamp is a right angle, and among the plurality of lead screws arranged on the first clamps arranged oppositely, two lead screws whose axes are on the same straight line are a group. A second clamp is provided on the side of each group away from the winding, and a nut assembly is provided on the second clamp. The nut assembly consists of a nut and a fixer. A bearing is fixedly provided on the fixer, and the nut is fixedly connected to the fixer through the bearing. Two placement holes are provided on the second clamp, and the distance between the two placement holes is greater than the distance between the opposite long sides when the two first clamps clamp the iron yoke. The nut assembly is placed on the second clamp through the placement hole. The nut on the second clamp located below the iron core body is at the top and the fixer is at the bottom, and is inserted into the placement hole in a forward direction. The nut on the second clamp located above the iron core body is at the bottom and the fixer is at the top, and is inserted into the placement hole in a reverse direction. The nuts in the plurality of nut assemblies are respectively threadedly connected with the lead screws in contact with them.

[0005] Furthermore, the iron yoke is divided into a first iron yoke and a second iron yoke. The first iron yoke is arranged above the core column, and the second iron yoke is arranged below the core column. A pulley is also arranged below the second iron yoke, and the pulley tire is made of rubber.

[0006] Furthermore, a support block is provided below the lead screw.

[0007] Furthermore, soft rubber is provided between the first clamp and the iron yoke.

[0008] Furthermore, soft glue is provided at the position where the first clamping member contacts the second clamping member.

[0009] Furthermore, soft rubber is provided at the position where the gasket on the shock-absorbing rod meets the second clamp.

[0010] Furthermore, soft glue is provided at the bottom of the fixer in the nut assembly, and soft glue is also provided at the position where the fixer contacts the placement hole.

[0011] Furthermore, a processing technology for a transformer core with low noise and low vibration and having a large R angle is provided, wherein three windings are respectively wound on a core column to form a core body, a pulley is placed at the lower end of the core body, and then two first clamps are placed opposite to each other to clamp a second iron yoke located below the core body, and the two first clamps are fixed with fasteners, and this operation is repeated, and the first iron yoke located above the core body is clamped with two first clamps. After the installation is completed, a nut assembly is used to thread the lead screw on the first clamp, so that each lead screw is connected to a nut assembly, and a second clamp is placed in advance below the two nut assemblies placed on the two lead screws whose axes are in the same straight line at the lower end of the core body, and the nut is placed on top and the fixer is placed on the bottom, and the clamp is inserted forwardly into the second clamp placed below to open. The placement holes are designed in the operation, and the nut assemblies located at the lower end of the core body are placed on the corresponding second clamps in sequence. The two nut assemblies placed on the two lead screws located at the upper end of the core body and with the axes in the same straight line are arranged with the nuts at the bottom and the fixers at the top, and placed upside down. At this time, use a second clamp to place it upside down, insert the nut assembly into the placement hole on it, repeat the operation in sequence, fix each nut assembly located at the upper end of the core body, use the shock-absorbing rod to vertically pass through the holes opened on the upper and lower second clamps, and then place the gasket, spring, and gasket at one end of the shock-absorbing rod in sequence, and finally use bolts to tighten it to the straight rod of the shock-absorbing rod, repeat the operation, assemble the shock-absorbing rod, and repeat this operation after completion until the oppositely arranged second clamps are fixedly connected using two shock-absorbing rods.

[0012] Furthermore, when installing the first clamp, soft glue is placed between the iron yoke and the first clamp; when installing the second clamp, soft glue is placed between the second clamp and the first clamp; when installing the shock absorber rod, soft glue is placed at the junction of the gasket and the second clamp; when installing the nut assembly, soft glue is placed at the bottom of the fixture and at the position where the hole contacts the fixture.

[0013] Compared with the prior art, the present invention has the following advantages: (1) The present invention can reduce the vibration of the transformer core by cooperating with the lead screw and the nut, and limit the vibration of the core to the direction in which the lead screw is set. When the core vibrates, the core body drives the first clamp to move back and forth laterally, and the lead screw is driven to move back and forth, and drives the nut to rotate, thereby converting the force generated by the vibration into the force of the nut rotation, thereby reducing the amplitude of the vibration.

[0014] (2) The present invention uses a pulley to not only support the core body, but also further convert the vibration into the force of the pulley rotation, thereby further reducing the vibration amplitude.

[0015] (3) The first clamp and the second clamp of the present invention can be replaced separately. If an accessory is damaged, only the damaged accessory needs to be replaced. The nut assembly, which is most easily damaged, can also be replaced separately, thereby maximizing the service life of the iron core and reducing the cost of using the iron core.

[0016] (4) The R angle of the core column of the present invention is relatively large, which is convenient for winding and ensures the stability of the current.

[0017] (5) The present invention can reduce the vibration between the second clamps through the shock-absorbing rod, and can clamp the second clamps at the same vertical position, further ensuring the stability of the iron core and reducing vibration.

[0018] (6) The soft rubber placed between the components of the present invention reduces the transmission of vibration between the components and reduces the vibration of the entire core.

[0019] (7) The present invention reduces the friction between various components through the design of reducing various vibrations, which can reduce the vibration and also achieve the effect of reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a low noise and low vibration transformer core with a large R angle.

[0021] Figure 2 Schematic diagram of disassembly of an iron core for a low-noise and low-vibration transformer with a large R angle.

[0022] Figure 3 Schematic diagram of the core body.

[0023] Figure 4 Schematic diagram of the core body and winding.

[0024] Figure 5 Schematic diagram of the core body and the first clamp.

[0025] Figure 6 Schematic diagram of the core body, the first clamp and the second clamp.

[0026] Figure 7 Schematic diagram of the second clamp and nut assembly.

[0027] Figure 8 Schematic diagram of the shock absorber rod.

[0028] Among them, 100, iron core body, 110, iron yoke, 111, first iron yoke, 112, second iron yoke, 1121, pulley, 120, core column, 200, winding, 300, first clamp, 310, fastener, 320, screw, 321, support block, 400, second clamp, 410, nut assembly, 411, nut, 412, fixer, 420, placement hole, 500, shock absorbing rod, 510, spring, 520, gasket, 530, bolt. DETAILED DESCRIPTION

[0029] The present invention aims to address the deficiencies of the prior art and provide a low-noise and low-vibration transformer core with a large R angle and a processing technology thereof, which is specifically achieved by the following technical solutions: Reference Figure 1 , Figure 2 A low-noise and low-vibration transformer core with a large R angle includes a core body 100, a winding 200, a first clamp 300, and a second clamp 400.

[0030] Reference Figure 3 , Figure 5 The core body 100 is composed of an iron yoke 110 and a core column 120. The core column 120 is vertically arranged and has a winding 200 arranged thereon. The R angle of the core column 120 is a quarter circle, which is convenient for winding the winding 200 and makes the magnetic circuit more stable. The iron yoke 110 connects the horizontal part of the iron core column 120 to form a closed magnetic circuit.

[0031] Reference Figure 5 The two first clamps 300 clamp the iron yoke 110 oppositely, and the first clamps 300 at the same horizontal position are fixedly connected by fasteners 310, so that the core body and the first clamps 300 form a whole, increasing its weight, and the fasteners 310 can adjust the distance between the two first clamps 300, and can adjust different degrees of tightness according to different needs to meet various different needs.

[0032] Reference Figure 5 , Figure 6A plurality of lead screws 320 are arranged on a side of the first clamp 300 away from the iron yoke 110, and the second clamp 400 is arranged closely on a side of the first clamp 300 away from the winding 200, and the angle between the second clamp 400 and the first clamp 300 is a right angle, further ensuring the stability between the first clamp 300 and the second clamp 400. Among the plurality of lead screws 320 arranged on the oppositely arranged first clamps 300, two lead screws 320 whose axes are on the same straight line are a group, and a second clamp 400 is arranged on the side of each group away from the winding 200.

[0033] Reference Figure 6 , Figure 7 A nut assembly 410 is provided on the second clamp 400, and the nut assembly 410 consists of a nut 411 and a fixer 412. A bearing is fixedly provided on the fixer 412, and the nut 411 is fixedly connected to the fixer 412 through the bearing. Two placement holes 420 are provided on the second clamp 400, and the distance between the two placement holes 420 is greater than the distance between the opposite long sides when the two first clamps 300 clamp the iron yoke 110, ensuring that the two nut assemblies 410 can be threadedly connected with their corresponding lead screws 320, and the problem of the lead screw 320 and the nut assembly 410 being unable to contact each other due to the width problem of the main body of the first clamp 300 itself will not occur.

[0034] Reference Figure 7 The nut assembly 410 is placed on the second clamp 400 through the placement hole 420 and can be replaced separately. Because among all the components, the nut 411 in the nut assembly 410 is the component that is most prone to wear and tear due to the drilling rotation, and the probability of damage is much greater than that of other components. Therefore, the nut assembly 410 that can be replaced separately can greatly improve the overall life of the present invention and can greatly reduce the use and maintenance costs of the iron core.

[0035] Reference Figure 6The nut assembly 410 on the second clamp 400 located below the core body 100, with the nut 411 at the top and the fixer 412 at the bottom, is inserted into the placement hole 420 in the forward direction. The nut assembly 410 on the second clamp 400 located above the core body 100, with the nut 411 at the bottom and the fixer 412 at the top, is inserted into the placement hole 420 in the reverse direction. This design allows the upper and lower parts of the clamp to be manufactured using the same mold, saving mold opening costs and reducing manufacturing costs. Only the upper second clamp 400 needs to be placed inverted. The fixing effect of the present invention can be completed, and because the nut 411 located at the top is threadedly connected with the corresponding lead screw 320, it is then placed on the corresponding second clamp 400. At this time, the second clamp 400 does not play a load-bearing role, but only plays a role in limiting the two nut assemblies 410 to the same second clamp 400. Because the two nut assemblies 410 are limited in the same second clamp 400, the two can play a stabilizing role on each other, ensuring the stability of the second clamp 400 itself, and also reducing the noise generated. The upper and lower groups of nut assemblies 410 and lead screw 320 cooperate with each other, the lower nut assembly 410 and lead screw 320 mainly play the role of bearing weight and reducing vibration, and the upper nut assembly 410 and lead screw 320 mainly play the role of limiting the moving trajectory, and do not play a load-bearing role. At the same time, the two groups of nut assemblies 410 and lead screw 320 can further reduce vibration, and the nut assembly 410 and lead screw 320 limit the direction of the iron core vibration, so that it can only produce displacement in the lateral direction, and convert more vibration-generated force into the force of the nut 411 rotation.

[0036] Reference Figure 6 The nuts 411 in the plurality of nut assemblies 410 are respectively threadedly connected with the lead screws 320 in contact therewith. The nut 411 can be designed with a silent and shock-absorbing ball nut. When the iron core vibrates, the first clamp 300 that clamps the iron core moves synchronously with the iron core. At this time, the lead screw 320 on the first clamp 300 moves synchronously with the first clamp 300. When the lead screw 320 moves, it drives the nut 411 to rotate. Because the vibration amplitude is generally small, the amplitude of the reciprocating motion of the lead screw 320 is also small, and the rotation amplitude of the nut 411 is also small. When the iron core vibrates, most of the force generated by the vibration is converted into the force of the nut rotation. This method reduces the amplitude of the vibration, so that it only produces a stable reciprocating displacement in a very small range in the lateral direction, ensuring the stability of the iron core operation. Reducing the vibration will also reduce the noise generated by the iron core due to vibration.

[0037] Reference Figure 2 , Figure 4The iron yoke 110 is divided into a first iron yoke 111 and a second iron yoke 112. The first iron yoke 111 is arranged above the core column 120, and the second iron yoke 112 is arranged below the core column 120. A pulley 1121 is also arranged below the second iron yoke 112. The tire of the pulley 1121 is made of rubber. The rubber pulley 1121 has a certain elasticity. Therefore, the diameter of the pulley 1121 can be designed to be slightly larger, and the height of the iron core body 100 can be slightly raised, so that it can be driven by the pulley 1121 to be more smooth. In order to prevent sliding, the pulley 1121 can be placed directly under the second iron yoke 112, and the weight of the iron core itself presses on the support frame of the pulley 1121 to make it run stably. It can also be prefabricated under the second iron yoke 112, that is, when manufacturing the second iron yoke 112, the support frame of the wheel 1121 is made of the same material as the second iron yoke 112, and then the wheel of the support frame of the wheel 1121 is placed on it. Because the wheel is made of rubber, an insulator, it will not affect the stability of its closed magnetic circuit.

[0038] Referring to 5, a support block 321 is provided below the lead screw 320. Because the lead screw 32 is longer than the first clamp 300 and has a risk of breaking, the support block 321 forms a support below it to shorten its lever arm and significantly reduce the breaking wind direction.

[0039] Reference Figure 2 , soft glue is provided between the first clamp 300 and the iron yoke 110. Soft glue is provided at the position where the first clamp 300 contacts the second clamp 400. Soft glue is provided at the position where the gasket 520 on the shock-absorbing rod 500 and the second clamp 400 meet. Soft glue is provided at the bottom of the fixer 412 in the nut assembly 410, and soft glue is also provided at the position where it contacts the placement hole 420. The soft glue can reduce the vibration transmission between the various components, further reduce the vibration, and can also reduce the noise generated by the friction between the various metal components.

[0040] A processing technology for a transformer core with low noise and low vibration and having a large R angle, wherein three windings 200 are respectively wound on a core column 120 to form a core body 100, a pulley 1121 is placed at the lower end of the core body 100, and then two first clamps 300 are placed opposite to each other to clamp a second iron yoke 112 located below the core body 100, and the two first clamps 300 are fixed with a fastener 310, and this operation is repeated to clamp the first iron yoke 111 located above the core body 100 with two first clamps 300. After the installation is completed, a nut assembly 410 is used to fix the first iron yoke 111 located above the core body 100. The screws 320 on the first clamp 300 are threadedly connected so that each screw 320 is connected to a nut assembly 410. The second clamp 400 is placed in advance below the two nut assemblies 410 placed on the two screws 320 whose axes are on the same straight line at the lower end of the core body 100, and the nut 411 thereof is placed on the upper side and the fixer 412 is placed on the lower side. The nut assemblies 410 located at the lower end of the core body 100 are placed on the corresponding second clamp 400. 0, the two nut assemblies 410 placed on the two lead screws 320 located at the upper end of the core body 100 and whose axes are in the same straight line are arranged so that the nut 411 is at the bottom and the fixer 412 is at the top, and they are placed upside down. At this time, a second clamp 400 is used to place it upside down, and the nut assembly 410 is inserted into the placement hole 420 thereon. After the nut 411 located at the top is threadedly connected with the corresponding lead screw 320, it is placed in the corresponding second clamp 400. At this time, the second clamp 400 does not play a load-bearing role, but only plays a role in holding the two nut assemblies 410 The function of the same second clamp 400 is limited, and the operation is repeated in sequence to fix each nut assembly 410 located at the upper end of the core body 100, and the shock-absorbing rod 500 is used to vertically pass through the holes opened on the upper and lower second clamps 400, and then the gasket 520, spring 510, and gasket 520 are placed on one end of the shock-absorbing rod 500 in sequence, and finally the bolt 530 is used to tighten it to the straight rod of the shock-absorbing rod 500, and the operation is repeated to assemble the shock-absorbing rod 500. After completion, this operation is repeated until the oppositely arranged second clamps 400 are fixedly connected using two shock-absorbing rods 500.

[0041] When installing the first clamp 300, soft glue is placed between the iron yoke 110 and the first clamp 300. When installing the second clamp 400, soft glue is placed between the second clamp 400 and the first clamp 300. When installing the shock absorber rod 500, soft glue is placed at the junction of the gasket 520 and the second clamp 400. When installing the nut assembly 410, soft glue is placed at the bottom of the fixer 412 and at the position where the placement hole 420 contacts the fixer 412.

Claims

1. A low noise and low vibration transformer core with a large R angle, characterized in that: include: An iron core body (100), a winding (200), a first clamp (300), and a second clamp (400), wherein The iron core body (100) is composed of an iron yoke (110) and a core column (120). The core column (120) is arranged vertically, and a winding (200) is wound around the core column (120). The iron yoke (110) connects the horizontal part of the iron core column (120) to form a closed magnetic circuit. Two first clamps (300) clamp the iron yoke (110) in opposite directions. The first clamps (300) at the same horizontal position are fixedly connected by fasteners (310). A plurality of lead screws (320) are provided on one side of the first clamps (300) away from the iron yoke (110). The second clamp (400) is arranged in close contact with a side of the first clamp (300) away from the winding (200), and the angle between the second clamp (400) and the first clamp (300) is a right angle. Among the plurality of lead screws (320) arranged on the first clamps (300) arranged opposite to each other, two lead screws (320) whose axes are on the same straight line form a group, and a second clamp (400) is arranged on the side of each group away from the winding (200). The second clamp (400) is provided with a nut assembly (410), the nut assembly (410) is composed of a nut (411) and a fixer (412), a bearing is fixedly provided on the fixer (412), the nut (411) is fixedly connected to the fixer (412) via the bearing, the second clamp (400) is provided with two placement holes (420), the distance between the two placement holes (420) is greater than the distance between the opposite long sides when the two first clamps (300) clamp the iron yoke (110), the nut assembly (410) is placed on the second clamp (400) via the placement holes (420), A nut assembly (410) on a second clamp (400) located below the core body (100), with the nut (411) at the top and the fixer (412) at the bottom, is inserted forward into the placement hole (420). A nut assembly (410) on a second clamp (400) located above the core body (100), with the nut (411) at the bottom and the fixer (412) at the top, is inserted into the placement hole (420) in reverse. The nuts (411) in the plurality of nut assemblies (410) are respectively threadedly connected to the lead screws (320) in contact therewith.

2. The low-noise and low-vibration transformer core with a large R angle according to claim 1, characterized in that: The iron yoke (110) is divided into a first iron yoke (111) and a second iron yoke (112). The first iron yoke (111) is arranged above the core column (120), and the second iron yoke (112) is arranged below the core column (120). A pulley (1121) is also provided below the second iron yoke (112), and a tire of the pulley (1121) is made of rubber.

3. A low noise and low vibration transformer core with a large R angle according to claim 1 or 2, characterized in that: The second clamping member (400) is provided with a hole, and two second clamping members (400) in a vertical position are fixedly connected via a shock absorbing rod (500). The shock absorbing rod (500) is composed of a spring (510), a washer (520), and a bolt (530). A spring (510) is respectively provided at both ends of the shock absorbing rod (500), and a gasket (520) is respectively provided at both ends of the spring (510). The diameter of the gasket (520) is larger than the hole opened on the second clamp (400), and a hole is also opened at the center of the gasket (520). The bolt (530) passes through the two gaskets (520) and the spring (510) and is threadedly connected to the straight rod.

4. The low noise and low vibration transformer core with large R angle according to claim 3, characterized in that: A support block (321) is provided below the lead screw (320).

5. The low noise and low vibration transformer core with large R angle according to claim 3, characterized in that: Soft glue is provided between the first clamp (300) and the iron yoke (110).

6. The low noise and low vibration transformer core with large R angle according to claim 3, characterized in that: Soft glue is provided at the position where the first clamp (300) contacts the second clamp (400).

7. The low noise and low vibration transformer core with large R angle according to claim 3, characterized in that: Soft rubber is provided at the position where the gasket (520) on the shock absorbing rod (500) and the second clamp (400) meet.

8. The iron core for a transformer with low noise and low vibration and having a large R angle according to claim 3, characterized in that: The bottom of the fixer (412) in the nut assembly (410) is provided with soft glue, and the position where the fixer (412) contacts the placement hole (420) is also provided with soft glue.

9. A process for processing a transformer core with low noise and low vibration and having a large R angle, characterized in that: The three windings (200) are respectively wound on a core column (120) to form an iron core body (100), and a pulley (1121) is placed at the lower end of the iron core body (100). Then, the two first clamps (300) are placed opposite to each other to clamp the second iron yoke (112) located below the iron core body (100), and the two first clamps (300) are fixed using a fastener (310). This operation is repeated to clamp the first iron yoke (111) located above the iron core body (100) using the two first clamps (300). After the installation is completed, a nut assembly (410) is used to threadably connect the lead screw (320) on the first clamp (300), so that each lead screw (320) is connected to a nut assembly (410). A second clamp (400) is placed in advance below two nut assemblies (410) placed on two lead screws (320) located at the lower end of the core body (100) and whose axes are on the same straight line. The nut (411) is placed on the top and the fixer (412) is placed on the bottom, and is inserted forwardly into a placement hole (420) provided on a second clamp (400) placed below. The nut assemblies (410) located at the lower end of the core body (100) are placed on the corresponding second clamp (400) in sequence. Two nut assemblies (410) are placed on two lead screws (320) located at the upper end of the core body (100) and whose axes are in the same straight line. The two nut assemblies (410) are placed with the nut (411) at the bottom and the fixer (412) at the top, and are placed upside down. At this time, a second clamp (400) is used to place it upside down, and the nut assembly (410) is inserted into the placement hole (420) thereon. The operation is repeated in sequence to fix each nut assembly (410) located at the upper end of the core body (100). Use the shock-absorbing rod (500) to vertically pass through the holes opened on the upper and lower second clamps (400), and then place a gasket (520), a spring (510), and a gasket (520) on one end of the shock-absorbing rod (500) in sequence. Finally, use a bolt (530) to tighten it to the straight rod of the shock-absorbing rod (500), repeat the operation, and assemble the shock-absorbing rod (500). After completion, repeat this operation until the second clamps (400) arranged opposite to each other are fixedly connected using two shock-absorbing rods (500).

10. The process for processing a transformer core with low noise and low vibration and having a large R angle according to claim 9, characterized in that: When installing the first clamp (300), soft glue is placed between the iron yoke (110) and the first clamp (300). When installing the second clamp (400), soft glue is placed between the second clamp (400) and the first clamp (300). When installing the shock absorbing rod (500), soft glue is placed at the junction of the gasket (520) and the second clamp (400). When installing the nut assembly (410), soft glue is placed on the bottom of the fixer (412), and soft glue is placed at the position where the placement hole (420) contacts the fixer (412).

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