Transformer vibration test tool

Abstract

The utility model discloses a transformer vibration test tool, which comprises a bottom frame, a side frame and a top frame, the side frame is fixedly connected to the periphery of the bottom frame and extends upwards to form a test space for accommodating a transformer to be tested, and the top frame is detachably connected to the upper end of the side frame. A plurality of first hanging rings are arranged at the upper ends of the side frames, and a plurality of second hanging rings are arranged on the top frame. The top frame comprises a plurality of independent hanging beams, and the two ends of each hanging beam are detachably connected to the two opposite sides of the upper end of the corresponding side frame. The fixing device has the advantages of being good in universality and convenient to fix.

Description

Technical Field

[0001] This utility model relates to the field of vibration testing fixtures, and in particular to a transformer vibration testing fixture. Background Technology

[0002] Before leaving the factory, after transportation, or in specific operating condition simulations, transformers need to undergo vibration tests to verify their structural integrity and assess their ability to withstand bumps and impacts during transportation and to maintain normal operation under extreme conditions such as earthquakes.

[0003] Currently, transformer vibration tests typically employ direct fixing or simple frame fixing. This method has several shortcomings that urgently need to be addressed:

[0004] First, it lacks versatility and is inefficient. Because transformers vary in size, weight, and mounting location, the aforementioned mounting methods are almost entirely uncommon.

[0005] Second, the clamping and fixing effects are unreliable, affecting the accuracy of the test.

[0006] Third, operation is inconvenient, and installation and hoisting are difficult. The transformer itself is very heavy, and its installation and positioning require the assistance of lifting equipment. Existing fixing devices are often structurally flawed. During the installation process, certain parts of the tooling may interfere with the transformer's hoisting points (such as lifting rings), making the hoisting operation extremely difficult. Furthermore, after fixing the transformer to the tooling, there is a lack of systematic solutions in current technology for hoisting and installing the "tooling and transformer combination" as a whole.

[0007] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a transformer vibration test fixture that is versatile and easy to fix.

[0009] This utility model is achieved through the following technical solution:

[0010] To solve the above-mentioned technical problems, this utility model provides a transformer vibration test fixture, including a bottom frame, a side frame, and a top frame. The side frame is fixedly connected to the periphery of the bottom frame and extends upward to form a test space for accommodating the transformer under test. The top frame is detachably connected to the upper end of the side frame, and the upper end of the side frame is provided with a plurality of first lifting rings, and the top frame is provided with a plurality of second lifting rings. The top frame includes a plurality of independent lifting beams, and the two ends of each lifting beam are detachably connected to the opposite sides of the upper end of the side frame.

[0011] To further address the technical problems to be solved by this utility model, this utility model provides a transformer vibration testing fixture in which the bottom frame is provided with a plurality of first positioning holes for fixing the transformer to be tested onto the bottom frame by fasteners.

[0012] To further address the technical problems to be solved by this utility model, this utility model provides a transformer vibration test fixture in which a top beam is provided at the upper end of the side frame along its circumference, and connecting plates are provided at both ends of the lifting beam. The connecting plates are detachably fixed to the corresponding positions of the top beam by means of hoops or bolts.

[0013] In order to further solve the technical problems to be solved by this utility model, in the transformer vibration test fixture provided by this utility model, the second lifting ring is set on the top surface of each of the lifting beams.

[0014] To further address the technical problems to be solved by this utility model, the present utility model provides a transformer vibration testing fixture in which each lifting beam is provided with several second positioning holes.

[0015] To further address the technical problems to be solved by this utility model, this utility model provides a transformer vibration test fixture in which the bottom frame includes an outer frame formed by I-beams and a plurality of bottom connecting beams connected inside the outer frame.

[0016] To further address the technical problems to be solved by this utility model, the transformer vibration testing fixture provided by this utility model has multiple reinforcing ribs fixedly connected to the side of the outer frame.

[0017] To further address the technical problems to be solved by this utility model, the present utility model provides a transformer vibration test fixture in which the side frame includes multiple vertical rods arranged in the vertical direction, horizontal rods arranged in the horizontal direction, and diagonal rods connected between the vertical rods and horizontal rods. The vertical rods, horizontal rods, and diagonal rods are connected by welding or bolts to form a frame.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This invention employs a modular, detachable top frame composed of multiple independent lifting beams, each of which can be independently and adjustably installed on the side frames. This design completely transforms the traditional integrated or bulky top cover structure, bringing three significant advantages: First, it greatly enhances versatility, allowing for flexible adaptation to transformers of different shapes and sizes by increasing, decreasing, or adjusting the number and spacing of the lifting beams; second, it significantly simplifies the installation and hoisting process, allowing for easy hoisting of the transformer with the top fully open, followed by the individual installation of the lightweight lifting beams, reducing operational difficulty and safety risks; third, combined with the positioning hole array on the bottom frame and the auxiliary positioning holes on the lifting beams, it achieves comprehensive and multi-point secure fixing of the transformer, ensuring the stability and accuracy of vibration tests. Attached Figure Description

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is an exploded view of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the base frame. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Please see Figures 1 to 3 This embodiment discloses a transformer vibration testing fixture, which aims to provide a solution that is structurally robust, versatile, and easy to operate, in order to meet the vibration testing needs of transformers of different specifications.

[0026] like Figure 1 As shown, the overall structure of this fixture mainly includes a base frame 1 serving as a load-bearing foundation, a side frame 2 surrounding the base frame 1, and a top frame 3 detachably mounted on top of the side frame 2. The side frame 2 extends vertically upward from the base frame 1, together with the base frame 1 defining a three-dimensional test space for accommodating the transformer to be tested. The top frame 3 is used to close the upper opening of this test space and to provide auxiliary fixation for the transformer.

[0027] Specifically, the base frame 1 is the load-bearing foundation of the entire fixture, responsible for supporting the entire weight of the transformer and stably transferring it to the vibration test bench. To ensure sufficient strength and rigidity, in this embodiment, the base frame 1 is preferably constructed of high-strength metal profiles. Figure 2 As shown, its specific structure includes a rectangular outer frame 12 formed by welding I-beams, and multiple longitudinally and laterally intersecting bottom connecting beams 13 welded inside the outer frame 12. This grid or mesh-like structural design can effectively distribute and bear the heavy pressure from the transformer and resist torsional deformation during vibration.

[0028] To further enhance its structural stability, multiple reinforcing ribs 14 are welded onto the outer side wall of the outer frame 12.

[0029] Multiple first positioning holes 11 are provided on the top surface of each bottom connecting beam 13. The array distribution of these positioning holes can be adapted to the base mounting holes of transformers from different manufacturers and of different models, so that the transformer can be firmly fixed to the bottom frame 1 by bolts and other fasteners, achieving extremely high versatility.

[0030] The side frames 2 are fixedly connected to the four sides of the base frame 1, forming robust side walls. In this embodiment, the side frames 2 preferably adopt a truss structure, which is welded or bolted together from multiple vertical bars 22, horizontal bars 23, and diagonal bars 24 that provide support between them. This design ensures both support strength and lightweight construction. A top beam 21 is provided around the top of the side frames 2, which provides a standardized and robust connection interface for the installation of the top frame 3.

[0031] In addition, several first lifting rings 4 are provided on the top of the top beam 21 or the top of the vertical rod 22 at the upper end of the side frame 2. These lifting rings are used to lift and position the lower half of the tooling (i.e., the combination of the bottom frame 1 and the side frame 2) as a whole before installing the transformer.

[0032] Unlike traditional monolithic roofs, the top frame 3 in this embodiment adopts a modular design, which includes at least two independent suspension beams 31. Each suspension beam 31 is an independent structural unit, and both ends of it can be detachably connected to the top beams 21 on opposite sides of the upper end of the side frame 2.

[0033] like Figure 2As shown, this connection is implemented as follows: Each end of each lifting beam 31 is fixed with a connecting plate 32. The shape of the connecting plate 32 can be designed as a slot or flat plate structure that matches the top beam 21. Each connecting plate 32 has a through hole. During installation, the connecting plate 32 can be tightly held onto the top beam 21 by using hoops, or the connecting plate 32 can be fixed to the pre-drilled holes in the top beam 21 by bolts. This detachable connection method gives the tooling great flexibility.

[0034] On the top surface of the lifting beam 31, one or more second lifting rings 5 ​​are provided for individually lifting and placing each lifting beam 31. Simultaneously, several second positioning holes 311 are also provided along the length of the lifting beam 31. These positioning holes have multiple uses, such as assisting in the top-mounting and securing of the transformer via screws, pressure plates, or other accessories, or for installing sensors required for vibration testing (such as accelerometers).

[0035] The working process and beneficial effects of this utility model are reflected in:

[0036] 1. Installation Preparation: First, use the first lifting ring 4 to lift the lower half of the fixture (bottom frame 1 and side frame 2) onto the vibration test bench. At this time, remove all the lifting beams 31 from the side frame 2, so that the top of the test space is completely open.

[0037] 2. Transformer placement: Use lifting equipment to hoist the transformer under test into the test space from above without obstruction and place it on the bottom frame 1.

[0038] 3. Fixing: Adjust the position of the transformer so that the mounting hole of its base is aligned with the corresponding first positioning hole 11 on the bottom frame 1, and then firmly lock it with high-strength bolts.

[0039] 4. Install the top frame: Based on the structure of the transformer top, use the second lifting ring 5 to sequentially hoist one or more lifting beams 31 to the top of the side frame 2, adjust their spacing, and then fix them to the top beam 21 with hoops or bolts. If necessary, a top clamping device or sensor can also be installed using the second positioning hole 311.

[0040] 5. Testing: After completing the above steps, the transformer is firmly fixed in the fixture, forming a rigid whole, and the vibration test can begin.

[0041] In summary, this utility model, through its combined design of a base frame, side frames, and a modular, detachable top frame, particularly employing an independently adjustable lifting beam structure, solves the problems of poor versatility, inadequate fixing effect, and difficult operation inherent in existing technologies. Its structure is reasonable and securely fixed, flexibly adapting to transformers of different sizes and specifications, and greatly simplifying the installation and hoisting process, shortening test preparation time, and improving test efficiency and safety.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 transformer vibration test fixture, characterized by: The system includes a bottom frame (1), a side frame (2), and a top frame (3). The side frame (2) is fixedly connected to the periphery of the bottom frame (1) and extends upward to form a test space for accommodating the transformer under test. The top frame (3) is detachably connected to the upper end of the side frame (2), and the upper end of the side frame (2) is provided with several first lifting rings (4). The top frame (3) is provided with several second lifting rings (5). The top frame (3) includes several independent lifting beams (31), and both ends of each lifting beam (31) can be detachably connected to the opposite sides of the upper end of the side frame (2).

2. The transformer vibration test tool of claim 1, wherein: The bottom frame (1) is provided with a plurality of first positioning holes (11) for fixing the transformer under test to the bottom frame (1) by fasteners.

3. The transformer vibration test fixture of claim 1, wherein: The upper end of the side frame (2) is provided with a top beam (21) along its circumference, and the two ends of the hanging beam (31) are provided with connecting plates (32). The connecting plates (32) are detachably fixed to the corresponding positions of the top beam (21) by means of hoops or bolts.

4. The transformer vibration test fixture of claim 1, wherein: The second lifting ring (5) is disposed on the top surface of each of the lifting beams (31).

5. The transformer vibration test fixture of claim 1, wherein: Each lifting beam (31) is provided with several second positioning holes (311).

6. The transformer vibration test fixture of claim 1, wherein: The bottom frame (1) includes an outer frame (12) formed by I-beams and a plurality of bottom connecting beams (13) connected inside the outer frame (12).

7. The transformer vibration test fixture of claim 6, wherein: The outer frame (12) has multiple reinforcing ribs (14) fixedly connected to its side.

8. The transformer vibration test fixture of claim 1, wherein: The side frame (2) includes multiple vertical bars (22) arranged in the vertical direction, horizontal bars (23) arranged in the horizontal direction, and diagonal bars (24) connected between the vertical bars (22) and the horizontal bars (23). The vertical bars (22), horizontal bars (23) and diagonal bars (24) are connected by welding or bolts to form a frame.

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