Pulling plate fastening structure of wind power generation dry-type transformer

Abstract

The utility model provides a pulling plate fastening structure of a wind power generation dry type transformer, which comprises a pulling plate, two clamping pieces and a fastening piece, the pulling plate is used for being directly or indirectly connected with an iron core of the dry type transformer, and the two clamping pieces are defined as an upper clamping piece and a lower clamping piece respectively according to the position structure in the figure 2. The upper clamping piece and the lower clamping piece are connected with the pulling plate through the upper pin and the lower pin respectively, and the fastening piece is arranged on the side, away from the lower clamping piece, of the upper clamping piece and used for connecting the upper clamping piece and the pulling plate, so that stress is dispersed on the fastening piece and the upper pin, and the stress is prevented from being excessively concentrated on the upper pin; the risk that the pin deforms due to long-term stress exists in the operation process.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry-type transformer structures, and in particular relates to a pull plate fastening structure of a wind power generation dry-type transformer. Background Art

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and other places. The dry-type transformer pull plate is an important component of the dry-type transformer. Its main function is to fix and support the transformer chip to ensure the normal operation of the dry-type transformer.

[0003] The Chinese patent publication number CN216212704U discloses a pull plate connection structure for a wind power dry-type transformer, such as Figure 1 As shown, the connection structure includes a pull plate 1, an upper clamp 2, and a lower clamp 3. The upper end of the pull plate 1 is connected to the upper clamp 2 using an upper pin 5. Similarly, the lower end of the pull plate 1 is connected to the lower clamp 3 using a lower pin 6. However, this structural arrangement results in relatively high stress around the upper and lower pins 5 and 6 of the pull plate 1. After the transformer is suspended as a whole, there is a risk of deformation of the pins due to long-term stress during operation. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a pull plate fastening structure that can prevent stress from concentrating on the pins.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The utility model provides a pull plate fastening structure for a wind power generation dry-type transformer, comprising:

[0007] A pull plate, the pull plate being used to be directly or indirectly connected to the iron core of the dry-type transformer;

[0008] A clamping member, wherein two clamping members are provided, and the two clamping members are defined as an upper clamping member and a lower clamping member, and the upper clamping member and the lower clamping member are connected to the pull plate through an upper pin and a lower pin respectively;

[0009] A fastener is provided on a side of the upper clamping member away from the lower clamping member, and is used to connect the upper clamping member and the pull plate.

[0010] As a preferred embodiment, the fastener includes a bolt and a nut threaded together, the bolt passes through the upper clamp and the pull plate, and the nut abuts against the upper clamp or the pull plate.

[0011] As a preferred embodiment, the fastener further includes a self-locking washer, which is configured as one or a pair for abutting against the upper clamp and / or the pull plate.

[0012] As a preferred embodiment, the upper pin is configured as one or a pair.

[0013] As a preferred embodiment, the lower pins are configured as a pair.

[0014] As a preferred embodiment, it further comprises a sealing plate, one side of which is used to connect to the iron core of the transformer, and the other end of which is fixedly connected to the pull plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By arranging a fastener on the side of the upper clamp away from the lower clamp, the upper clamp and the pull plate are fixed together, so that the stress is dispersed on the fastener and the upper pin, preventing excessive stress from being concentrated on the upper pin. After the transformer is suspended and installed as a whole, there is a risk of the pin being deformed due to long-term stress during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The prior art drawings mentioned as background art;

[0019] Figure 2 This is a schematic plan view of the pull plate fastening structure according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the pull plate fastening structure of the embodiment of the utility model;

[0021] Figure 4 For the Figure 3 Cross-sectional view in the AA direction.

[0022] in:

[0023] 1-Pull plate; 2-Upper clamp; 3-Lower clamp; 4-Iron core; 5-Upper pin; 6-First lower pin; 7-Sealing plate; 8-Bolt; 9-Nut; 10-Self-locking washer; 11-Second lower pin. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of this application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] See also Figure 2 The embodiment of the utility model discloses a pull plate fastening structure of a wind power dry-type transformer, comprising a pull plate 1, a clamp and a fastener. The pull plate 1 is used to be directly or indirectly connected to the iron core 4 of the dry-type transformer. The clamp is provided with two, according to Figure 2 The position structure in the figure defines two clamps as an upper clamp 2 and a lower clamp 3. The upper clamp 2 and the lower clamp 3 are connected to the pull plate 1 through an upper pin 5 and a lower pin respectively. The fastener is provided on the side of the upper clamp 2 away from the lower clamp 3, as shown in FIG. Figure 2 As shown, the fastener is arranged above the upper clamp 2 and is used to connect the upper clamp 2 and the pull plate 1. This arrangement allows the stress to be dispersed between the fastener and the upper pin 5, preventing excessive stress from being concentrated on the upper pin 5. After the transformer is suspended and installed as a whole, there is a risk of the pin being deformed due to long-term stress during operation.

[0027] Specifically, the fastener includes a bolt 8 and a nut 9 that are screwed together. The bolt 8 passes through the upper clamp 2 and the pull plate 1, and the nut 9 abuts against the upper clamp 2 or the pull plate 1. In this embodiment, Figure 2 As shown, the bolt 8 passes through the pull plate 1 and the upper clamp 2 from left to right in sequence, and the nut 9 is fixed on the bolt 8 and abuts against the upper clamp 2; more preferably, the fastener also includes a self-locking washer 10, and the self-locking washer 10 is configured as one or a pair for abutting against the upper clamp 2 and / or the pull plate 1. In this embodiment, there are two self-locking washers 10, and the two self-locking washers 10 clamp the pull plate 1 and the upper clamp 2. One self-locking washer 10 is located between the pull plate 1 and the head of the bolt 8, and the other self-locking washer 10 is located between the upper clamp 2 and the nut 9.

[0028] For further information, please also refer to Figure 3 and Figure 4In this embodiment, the upper pin 5 is configured as a single pin, and the lower pins are configured as a pair. The two lower pins are defined as a first lower pin 6 and a second lower pin 11. The direction from the first lower pin 6 to the second lower pin 11 is perpendicular to the direction from the upper clamp 2 to the lower clamp 3. This configuration, compared to a single lower pin, can improve the stress conditions around the pins and reduce the risk of long-term deformation due to stress. It is understood that the upper pins 5 can also be configured as a pair to better disperse stress, and such a modification also falls within the scope of protection of the present invention.

[0029] Preferably, Figure 4 As shown, the first lower pin 6 of this embodiment is welded to the pull plate 1 . Similarly, the upper pin 5 and the second lower pin 11 are also welded to the pull plate 1 to enhance the connection strength between the dry-type transformer and the pull plate 1 .

[0030] The pull plate fastening structure of this embodiment also includes a sealing piece 7, one side of which is used to connect to the iron core 4 of the transformer, and the other side is fixedly connected to the pull plate 1.

[0031] To sum up, the utility model provides a pull plate fastening structure for a wind power dry-type transformer, which fixes the upper clamp 2 and the pull plate 1 together by arranging a fastener on the side of the upper clamp 2 away from the lower clamp 3, so that the stress is dispersed on the fastener and the upper pin 5, preventing excessive stress from being concentrated on the upper pin 5. After the transformer is suspended and installed as a whole, there is a risk of the pin being deformed due to long-term stress during operation.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A pull plate fastening structure for a wind power dry-type transformer, characterized in that: include: A pull plate (1), the pull plate (1) being used to be directly or indirectly connected to an iron core (4) of a dry-type transformer; A clamping piece, wherein two clamping pieces are provided, and the two clamping pieces are defined as an upper clamping piece (2) and a lower clamping piece (3), and the upper clamping piece (2) and the lower clamping piece (3) are connected to the pull plate (1) via an upper pin (5) and a lower pin respectively; A fastener is provided on a side of the upper clamping member (2) away from the lower clamping member (3), and is used to connect the upper clamping member (2) and the pull plate (1).

2. The pull plate fastening structure according to claim 1, characterized in that: The fastener comprises a bolt (8) and a nut (9) threadedly connected to each other, the bolt (8) passes through the upper clamp (2) and the pull plate (1), and the nut (9) abuts against the upper clamp (2) or the pull plate (1).

3. The pull plate fastening structure according to claim 2, characterized in that: The fastener further comprises a self-locking washer (10), which is configured as one or a pair and is used to abut against the upper clamp (2) and / or the pull plate (1).

4. The pull plate fastening structure according to claim 1, characterized in that: The upper pin (5) is configured as one or a pair.

5. The pull plate fastening structure according to claim 1, characterized in that: The lower pins are configured as a pair.

6. The pull plate fastening structure according to claim 1, characterized in that: It also includes a sealing plate (7), one side of which is used to connect to the iron core (4) of the transformer, and the other side of which is fixedly connected to the pulling plate (1).

Images