Dry-type transformer iron yoke tensioning structure
By designing a dry transformer iron yoke tensioning structure composed of a U-shaped fastening plate and driving components, the problems of cumbersome and high labor cost in the prior art are solved, and more efficient tensioning operation and reducing labor cost are achieved.
Patent Information
- Application Number
- CN202421861183.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The iron yoke tightening operation of existing dry transformers is cumbersome, inefficient, and requires multiple staff to operate together, resulting in high labor costs.
A dry transformer iron yoke tensioning structure is designed, including a tensioning mechanism A and a tensioning mechanism B, consisting of a U-shaped fastening plate and a driving assembly, and the tensioning operation is simplified by the transmission mechanism of the rotary shaft and the pulley.
This structure simplifies the staff's tightening operation of the iron yoke on the iron core of the dry transformer, improves the operating efficiency, reduces labor costs, and can complete the tightening operation by one staff member.
Smart Images
Figure CN222914528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dry-type transformers, and particularly to a yoke tightening structure for a dry-type transformer. Background Technique
[0002] In the prior art, since the iron core of a power transformer vibrates during operation, when the factory designs and produces a transformer, the yoke on the iron core needs to be clamped integrally by clamping parts.
[0003] The traditional clamping method is that after two clamping plates are respectively located on both sides of the upper yoke of the iron core, the two clamping plates are clamped on the yoke through the cooperation of a screw rod and a nut.
[0004] When the above-mentioned prior art tightens the yoke, the staff needs to first place the two clamping plates on both sides of the iron core respectively, and then connect the two clamping plates through a screw rod. The staff can tighten the yoke by synchronously rotating multiple nuts, or the staff can rotate multiple nuts one by one for multiple times. This tightening operation method is relatively cumbersome, the tightening operation efficiency is low, and when the two clamping plates are respectively located on both sides of the iron core or multiple nuts are synchronously rotated, two or more staff members are required to perform the tightening operation simultaneously, and the labor cost is relatively high. Therefore, a yoke tightening structure for a dry-type transformer is designed. Content of the Utility Model
[0005] Aiming at the defects or deficiencies existing in the yoke tightening of dry-type transformers, the purpose of the utility model is to provide a yoke tightening structure for a dry-type transformer, which facilitates the staff to tighten the yoke on the iron core of the dry-type transformer and improves the tightening operation efficiency.
[0006] To achieve the above-mentioned utility model purpose, the utility model adopts the following technical scheme:
[0007] A yoke tightening structure for a dry-type transformer provided by the utility model includes a dry-type transformer iron core, and a tightening mechanism A and a tightening mechanism B for tightening the yoke are respectively installed above and below the outer wall of the dry-type transformer iron core. Both the tightening mechanism A and the tightening mechanism B are composed of a U-shaped fastening plate A, a U-shaped fastening plate B and a driving component;
[0008] The driving component is provided with a rotating shaft A and a rotating shaft B. One end of the rotating shaft A penetrates through the threaded hole A and is installed in the bearing on the outer wall of the connecting plate B, and the connecting plate B is located inside the U-shaped fastening plate A. The other end of the rotating shaft A sequentially penetrates through the through hole B and the bearing on the outer wall of the connecting plate A and is connected to the rotation adjusting plate, and the connecting plate A is located inside the U-shaped fastening plate B. One end of the rotating shaft B penetrates through the through hole A and is installed in the bearing on the outer wall of the connecting plate B. The other end of the rotating shaft B sequentially penetrates through the threaded hole B and the bearing on the outer wall of the connecting plate A and is connected to the rotation adjusting plate.
[0009] Preferably, the tensioning mechanism B is installed on the upper surface of the insulating backing plate, and bottom plates are installed at both the front and rear ends of the lower surface of the insulating backing plate.
[0010] Preferably, belt pulleys are installed on the outer walls of the other ends of the rotating shaft A and the rotating shaft B, and the belt pulley on the rotating shaft A is connected to the belt pulley on the rotating shaft B through a transmission belt.
[0011] Preferably, an insulating protection plate A is provided on the outer side wall of the U-shaped fastening plate A, and an insulating protection plate B is provided on the outer side wall of the U-shaped fastening plate B.
[0012] Preferably, the through hole A and the threaded hole A are respectively opened at the front end and the rear end of the outer wall of the U-shaped fastening plate A, and the threaded hole B and the through hole B are respectively opened at the front end and the rear end of the outer wall of the U-shaped fastening plate B.
[0013] Preferably, there is a clearance fit between the outer wall of the rotating shaft A and the inner wall of the through hole B, and there is a clearance fit between the outer wall of the rotating shaft B and the inner wall of the through hole A.
[0014] Preferably, a left-handed thread and a scale mark A are respectively provided on both sides of the outer wall of the rotating shaft A, a scale mark B and a right-handed thread are respectively provided on both sides of the outer wall of the rotating shaft B, and there is a threaded fit connection between the left-handed thread on the outer wall of the rotating shaft A and the threaded hole A on the U-shaped fastening plate A, and there is a threaded fit connection between the right-handed thread on the outer wall of the rotating shaft B and the threaded hole B on the U-shaped fastening plate B.
[0015] Preferably, the tensioning mechanism A and the tensioning mechanism B are connected through a connecting screw rod, the connecting screw rod is fastened to the tensioning mechanism A through a nut, and the connecting screw rod is fastened to the tensioning mechanism B through a nut.
[0016] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:
[0017] 1. Through the coordinated setting of a series of structures such as the tensioning mechanism A and the tensioning mechanism B, the tensioning mechanism A and the tensioning mechanism B respectively tension the upper yoke and the lower yoke on the core of the dry-type transformer. When the staff installs the tensioning mechanism A and the tensioning mechanism B on the core of the dry-type transformer and performs the tensioning operation on the yoke on the core of the dry-type transformer, compared with the prior art, the tensioning operation of the yoke on the core of the dry-type transformer in the present invention is simple, which simplifies the tensioning operation of the yoke on the core of the dry-type transformer by the staff, improves the efficiency of the tensioning operation, and also reduces the labor cost.
[0018] 2. Through the coordinated setting of a series of structures such as the driving components, when the staff performs the tensioning operation on the yoke of the dry-type transformer core, after the tensioning mechanism A and the tensioning mechanism B are fixed on the dry-type transformer core, it is convenient for the staff to adjust the acting force exerted by the tensioning mechanism A or the tensioning mechanism B on the yoke of the dry-type transformer core, further facilitating the staff to perform the tensioning operation on the yoke of the dry-type transformer core. Description of the Drawings
[0019] The schematic drawings of the specification forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.
[0020] Figure 1 is the overall three-dimensional structure schematic of the present utility model Figure 1 .
[0021] Figure 2 is the overall three-dimensional structure schematic of the present utility model Figure 2 .
[0022] Figure 3 is the schematic diagram of the connection structure between the tensioning mechanism B and the bottom plate of the present utility model.
[0023] Figure 4 is the three-dimensional structure schematic of the tensioning mechanism A and the tensioning mechanism B of the present utility model Figure 1 .
[0024] Figure 5 is the three-dimensional structure schematic of the tensioning mechanism A and the tensioning mechanism B of the present utility model Figure 2 .
[0025] Figure 6 is the three-dimensional structure schematic of the driving component of the present utility model Figure 1 .
[0026] Figure 7 is the three-dimensional structure schematic of the driving component of the present utility model Figure 2 .
[0027] Figure 8 is the three-dimensional structure schematic of the U-shaped fastening plate A and the U-shaped fastening plate B of the present utility model Figure 1 .
[0028] Figure 9 is the three-dimensional structure schematic of the U-shaped fastening plate A and the U-shaped fastening plate B of the present utility model Figure 2 .
[0029] Figure 10 is the three-dimensional structure schematic diagram of the rotating shaft A and the rotating shaft B of the present utility model.
[0030] In the figure:
[0031] 100, Dry-type transformer core;
[0032] 200, Tightening mechanism A;
[0033] 210, U-shaped fastening plate A; 211, Through hole A; 212, Insulation protection plate A; 213, Threaded hole A;
[0034] 220, U-shaped fastening plate B; 221, Through hole B; 222, Insulation protection plate B; 223, Threaded hole B;
[0035] 230, Driving assembly; 231, Rotating shaft A; 2311, Left-handed thread; 2312, Scale mark A; 232, Connecting plate A; 233, Rotating adjustment plate; 234, Transmission belt; 235, Pulley; 236, Rotating shaft B; 2361, Right-handed thread; 2362, Scale mark B; 237, Connecting plate B;
[0036] 300, Connecting screw;
[0037] 400, Tightening mechanism B;
[0038] 500, Bottom plate;
[0039] 600, Insulating cushion plate. Detailed implementation manners
[0040] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0041] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanations of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.
[0042] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0043] As Figures 1-10As shown in the figure, a yoke tensioning structure for a dry-type transformer includes a dry-type transformer core 100. Tensioning mechanism A 200 and tensioning mechanism B 400 for tensioning the yoke are respectively installed above and below the outer wall of the dry-type transformer core 100. Both tensioning mechanism A 200 and tensioning mechanism B 400 are composed of U-shaped fastening plate A 210, U-shaped fastening plate B 220 and drive assembly 230;
[0044] The drive assembly 230 is provided with a rotating shaft A 231 and a rotating shaft B 236. One end of the rotating shaft A 231 penetrates through the threaded hole A 213 and is installed in the bearing on the outer wall of the connecting plate B 237, and the connecting plate B 237 is located inside the U-shaped fastening plate A 210. The other end of the rotating shaft A 231 sequentially penetrates through the through hole B 221 and the bearing on the outer wall of the connecting plate A 232 and is connected to the rotation adjustment plate 233, and the connecting plate A 232 is located inside the U-shaped fastening plate B 220. One end of the rotating shaft B 236 penetrates through the through hole A 211 and is installed in the bearing on the outer wall of the connecting plate B 237. The other end of the rotating shaft B 236 sequentially penetrates through the threaded hole B 223 and the bearing on the outer wall of the connecting plate A 232 and is connected to the rotation adjustment plate 233.
[0045] The tensioning mechanism B 400 is installed on the upper surface of the insulating pad 600, and the front and rear ends of the lower surface of the insulating pad 600 are both installed with the bottom plate 500. The insulating pad 600 can not only support the tensioning mechanism B 400, but also play an insulating role.
[0046] Pulley wheels 235 are installed on the outer walls of the other ends of the rotating shaft A 231 and the rotating shaft B 236. The pulley wheel 235 on the rotating shaft A 231 is connected to the pulley wheel 235 on the rotating shaft B 236 through a transmission belt 234. When the rotation adjustment plate 233 rotates, it will drive the rotating shaft A 231 or the rotating shaft B 236 to rotate. When the rotating shaft A 231 or the rotating shaft B 236 rotates, it will drive the pulley wheel 235 to rotate. The rotation of the pulley wheel 235 will drive the other pulley wheel 235 to rotate through the transmission belt 234. Therefore, when the rotation adjustment plate 233 rotates, it will drive the rotating shaft A 231 and the rotating shaft B 236 to rotate simultaneously.
[0047] An insulating protection plate A 212 is provided on the outer side wall of the U-shaped fastening plate A 210, and an insulating protection plate B 222 is provided on the outer side wall of the U-shaped fastening plate B 220. The insulating protection plate A 212 and the insulating protection plate B 222 can protect the yoke on the clamped dry-type transformer core, avoiding the situation that the insulating layer on the yoke is damaged by clamping.
[0048] The through hole A211 and the threaded hole A213 are respectively opened at the front end and the rear end of the outer wall of the U-shaped fastening plate A210. The threaded hole B223 and the through hole B221 are respectively opened at the front end and the rear end of the outer wall of the U-shaped fastening plate B220. There is a clearance fit between the outer wall of the rotating shaft A231 and the inner wall of the through hole B221, and there is a clearance fit between the outer wall of the rotating shaft B236 and the inner wall of the through hole A211. Since there is a clearance fit between the outer wall of the rotating shaft A231 and the inner wall of the through hole B221, and there is a clearance fit between the outer wall of the rotating shaft B236 and the inner wall of the through hole A211, the movement of the U-shaped fastening plate B220 and the U-shaped fastening plate A210 can be respectively limited and guided, avoiding the situation that the U-shaped fastening plate B220 and the U-shaped fastening plate A210 rotate with the rotation of the rotating shaft A231 and the rotating shaft B236.
[0049] On both sides of the outer wall of the rotating shaft A231, there are respectively a left-handed thread 2311 and a scale mark A2312. On both sides of the outer wall of the rotating shaft B236, there are respectively a scale mark B2362 and a right-handed thread 2361. There is a threaded fit connection between the left-handed thread 2311 on the outer wall of the rotating shaft A231 and the threaded hole A213 on the U-shaped fastening plate A210, and there is a threaded fit connection between the right-handed thread 2361 on the outer wall of the rotating shaft B236 and the threaded hole B223 on the U-shaped fastening plate B220. Due to the setting of the scale mark A2312 and the scale mark B2362, according to the movement of the U-shaped fastening plate A210 and the U-shaped fastening plate B220, the staff can adjust the acting force on the yoke of the dry-type transformer core 100 by the tensioning mechanism A200 or the tensioning mechanism B400 by observing the scale mark A2312 or the scale mark B2362, which further facilitates the staff to perform the tensioning operation on the yoke of the dry-type transformer core 100.
[0050] The tensioning mechanism A200 and the tensioning mechanism B400 are connected by a connecting screw 300. The connecting screw 300 is fastened to the tensioning mechanism A200 by a nut, and the connecting screw 300 is also fastened to the tensioning mechanism B400 by a nut. After the tensioning mechanism A200 and the tensioning mechanism B400 are both installed on the dry-type transformer core 100, the staff then connects the tensioning mechanism A200 and the tensioning mechanism B400 through the connecting screw 300, so that a certain connection is formed between the tensioning mechanism A200 and the tensioning mechanism B400, avoiding the situation that the tensioning mechanism A200 slides on the dry-type transformer core 100 and causes the insulation layer on the yoke to be damaged by friction.
[0051] When the staff performs a tightening operation on the yoke of the dry-type transformer core 100, the staff first installs the tightening mechanism B400 onto the insulating backing plate 600 through fastening bolts, and then installs the tightening mechanism A200 and the tightening mechanism B400 above and below the dry-type transformer core 100 respectively. When the tightening mechanism A200 and the tightening mechanism B400 tighten the yoke on the dry-type transformer core 100, when the staff rotates the rotation adjustment plate 233 on the tightening mechanism A200 or the tightening mechanism B400 forward or backward, it will drive the rotating shaft A231 and the rotating shaft B236 to rotate forward or backward. Since the left-handed thread 2311 on the outer wall of the rotating shaft A231 and the threaded hole A213 on the U-shaped fastening plate A210 are in threaded fit connection, and the right-handed thread 2361 on the outer wall of the rotating shaft B236 and the threaded hole B223 on the U-shaped fastening plate B220 are in threaded fit connection, when the rotating shaft A231 and the rotating shaft B236 rotate forward or backward, the U-shaped fastening plate A210 and the U-shaped fastening plate B220 will move linearly on the outer walls of the rotating shaft A231 and the rotating shaft B236, and the moving direction of the U-shaped fastening plate A210 is opposite to the moving direction of the U-shaped fastening plate B220. Thus, the distance between the U-shaped fastening plate A210 and the U-shaped fastening plate B220 can be adjusted. The adjustable distance between the U-shaped fastening plate A210 and the U-shaped fastening plate B220 can make the yoke on the dry-type transformer core 100 be clamped between the U-shaped fastening plate A210 and the U-shaped fastening plate B220. In the above operation of installing the tightening mechanism A200 and the tightening mechanism B400, one staff member can complete it, without the need for two or more staff members to cooperate to install the tightening mechanism A200 and the tightening mechanism B400 and perform the tightening operation on the yoke of the dry-type transformer core 100, nor does it require the staff to rotate multiple nuts one by one multiple times. Therefore, compared with the tightening operation in the prior art, the tightening operation of the yoke on the dry-type transformer core 100 in the present invention is simple, which simplifies the tightening operation of the staff on the yoke of the dry-type transformer core 100, improves the efficiency of the tightening operation, and also reduces the labor cost. When the staff performs the tightening operation on the yoke of the dry-type transformer core 100, according to the movement of the U-shaped fastening plate A210 and the U-shaped fastening plate B220, the staff can adjust the acting force exerted by the tightening mechanism A200 or the tightening mechanism B400 on the yoke of the dry-type transformer core 100 by observing the scale mark A2312 or the scale mark B2362, which further facilitates the tightening operation of the staff on the yoke of the dry-type transformer core 100.
[0052] The above are only the preferred embodiments of the present utility model and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A dry-type transformer iron yoke tensioning structure, comprising a dry-type transformer iron core (100), characterized in that: A tensioning mechanism A (200) and a tensioning mechanism B (400) for tightening the iron yoke are respectively installed above and below the outer wall of the dry-type transformer iron core (100), and the tensioning mechanism A (200) and the tensioning mechanism B (400) are both composed of a U-shaped fastening plate A (210), a U-shaped fastening plate B (220) and a driving assembly (230); The driving assembly (230) is provided with a rotating shaft A (231) and a rotating shaft B (236), one end of the rotating shaft A (231) passes through the threaded hole A (213) and is installed in the bearing on the outer wall of the connecting plate B (237), and the connecting plate B (237) is located on the inner side of the U-shaped fastening plate A (210), the other end of the rotating shaft A (231) passes through the through hole B (221) and the bearing on the outer wall of the connecting plate A (232) in sequence and is connected to the rotation adjustment plate (233), and the connecting plate A (232) is located on the inner side of the U-shaped fastening plate B (220), one end of the rotating shaft B (236) passes through the through hole A (211) and is installed in the bearing on the outer wall of the connecting plate B (237), the other end of the rotating shaft B (236) passes through the threaded hole B (223) and the bearing on the outer wall of the connecting plate A (232) in sequence and is connected to the rotation adjustment plate (233).
2. The dry-type transformer iron yoke tensioning structure according to claim 1, characterized in that: The tensioning mechanism B (400) is installed on the upper surface of the insulating pad (600), and bottom plates (500) are installed at both the front and rear ends of the lower surface of the insulating pad (600).
3. The dry-type transformer iron yoke tensioning structure according to claim 1, characterized in that: A pulley (235) is installed on the outer wall of the other end of the rotating shaft A (231) and the rotating shaft B (236), and the pulley (235) on the rotating shaft A (231) is connected to the pulley (235) on the rotating shaft B (236) through a transmission belt (234).
4. The dry-type transformer iron yoke tensioning structure according to claim 1, characterized in that: An insulating protection plate A (212) is provided on the outer wall of the U-shaped fastening plate A (210), and an insulating protection plate B (222) is provided on the outer wall of the U-shaped fastening plate B (220).
5. The dry-type transformer iron yoke tensioning structure according to claim 1, characterized in that: The through hole A (211) and the threaded hole A (213) are respectively opened at the front end and the rear end of the outer wall of the U-shaped fastening plate A (210), and the threaded hole B (223) and the through hole B (221) are respectively opened at the front end and the rear end of the outer wall of the U-shaped fastening plate B (220).
6. The dry-type transformer iron yoke tensioning structure according to claim 1, characterized in that: There is a clearance fit between the outer wall of the rotating shaft A (231) and the inner wall of the through hole B (221), and there is a clearance fit between the outer wall of the rotating shaft B (236) and the inner wall of the through hole A (211).
7. The dry-type transformer iron yoke tensioning structure according to claim 1, characterized in that: The outer wall of the rotating shaft A (231) is provided with left-handed threads (2311) and scale marks A (2312) on both sides, and the outer wall of the rotating shaft B (236) is provided with scale marks B (2362) and right-handed threads (2361) on both sides. The left-handed threads (2311) on the outer wall of the rotating shaft A (231) are threadedly connected with the threaded holes A (213) on the U-shaped fastening plate A (210), and the right-handed threads (2361) on the outer wall of the rotating shaft B (236) are threadedly connected with the threaded holes B (223) on the U-shaped fastening plate B (220).
8. The dry-type transformer iron yoke tensioning structure according to claim 1, characterized in that: The tensioning mechanism A (200) and the tensioning mechanism B (400) are connected via a connecting screw (300), the connecting screw (300) and the tensioning mechanism A (200) are fastened via a nut, and the connecting screw (300) and the tensioning mechanism B (400) are fastened via a nut.