Detachable vibration impact test clamp

Abstract

The utility model belongs to the technical field of test devices, and particularly relates to a detachable vibration impact test clamp which comprises a bottom plate, a pair of side edge supporting plates are symmetrically arranged on the two sides of the bottom plate, a lifting plate is detachably arranged above the side edge supporting plates, a lifting column and a positioner are arranged on the bottom face of the lifting plate, and the lifting column and the positioner are arranged on the bottom face of the lifting plate. Hoisting holes are formed in the lower ends of the hoisting columns, and the bottom plate is fixed to a vibration test bed through fasteners. The test fixture provided by the utility model not only can simulate the actual installation state of the casing, but also is convenient to install and operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of test devices, and in particular relates to a detachable vibration impact test fixture. Background Art

[0002] The aircraft engine casing is the primary load-bearing component, fulfilling the crucial function of supporting and transmitting various loads. Typically composed of a shell and support plates, the casing features a complex design that must meet strength, rigidity, and reliability requirements. Vibration testing is a key component in assessing the environmental adaptability of casing accessories. During the development phase, the casing structure undergoes numerous tests to verify the rationality of the design and process.

[0003] As a highly integrated power plant, aircraft engines must achieve flight lifetimes exceeding tens of thousands of hours. As a crucial component of aircraft engines, they demand exceptional reliability and longevity. Furthermore, to reduce weight and conserve space on the aircraft, their layouts are compact and complex. In actual operation, the casing structure is subject to high levels of vibration and extremely harsh operating conditions. Therefore, to prevent casing failure in high-temperature, vibrating operating environments, dynamic analysis of the casing structure is essential in engineering projects. This research examines the casing's vibration characteristics and optimizes the design.

[0004] A Chinese patent (application number 201610837529.8) discloses a vibration impact test fixture, including a fixture body, wherein the fixture body includes at least two fixture mounting surfaces and two product mounting surfaces, the two product mounting surfaces are provided with connectors for fixing the products, and the two fixture mounting surfaces are fixed to the vibration test bench by fasteners. Since the device is provided with multiple product mounting surfaces, a variety of products can be installed and tested by replacing different connectors. By providing multiple fixture mounting surfaces, tests can be carried out in all directions of the product, and vibration impact tests of multiple products can also be carried out at the same time. The fixture is a non-detachable frame structure, and the main purpose of the design is to be a small universal fixture that is convenient for changing the vibration direction.

[0005] In view of the complex receiver structure, it is necessary to design a test fixture that can simulate the actual installation state of the receiver and facilitate installation operations. Utility Model Content

[0006] In order to solve the deficiencies in the prior art, the utility model provides a detachable vibration impact test fixture.

[0007] The utility model provides the following technical solutions:

[0008] A detachable vibration impact test fixture includes a base plate, a pair of side support plates are symmetrically arranged on both sides of the base plate, a hanging plate is detachably arranged above the pair of side support plates, a hanging column and a locator are arranged on the bottom surface of the hanging plate, a hanging hole is arranged at the lower end of the hanging column, and the base plate is fixed to the vibration test table by fasteners.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The convenience of the detachable lifting plate makes the complex installation of the receiver simple.

[0011] 2. The convenience of the detachable lifting plate makes this fixture adaptable to the installation of various types of gas turbine casing structures, saving costs.

[0012] 3. Simulating actual working conditions on the ground can not only safely obtain material data, but also save test costs and shorten the development cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the combined structure of the bottom plate and the side support plate;

[0015] Figure 3 is a schematic diagram of the base plate;

[0016] Figure 4 It is a schematic diagram of the combined structure of the mounting plate, hanging column and positioner.

[0017] Among them, 1-base plate, 2-side support plate, 21-side mounting hole, 22-first threaded mounting hole, 3-hanging plate, 31-second threaded mounting hole, 4-hanging column, 41-hanging hole, 5-locator. DETAILED DESCRIPTION

[0018] The technical solution of the present utility model is further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-Figure 4 As shown, a detachable vibration impact test fixture includes a base plate 1, a pair of side support plates 2 are symmetrically arranged on both sides of the base plate 1, a hanging plate 3 is detachably arranged above the pair of side support plates 2, a hanging plate 3 is provided on the bottom surface of the hanging plate 3, a hanging column 4 and a positioner 5 are provided, a hanging hole 41 is provided at the lower end of the hanging column 4, and the base plate 1 is fixed to the vibration test bench by fasteners.

[0020] The side support plate 2 of the detachable vibration impact test fixture is provided with a side mounting hole 21 .

[0021] The base plate 1 and the hanging plate 3 of the detachable vibration impact test fixture are both square plates.

[0022] The two ends of the hanging plate 3 of the detachable vibration impact test fixture are screwed together with the side support plate 2.

[0023] The base plate 1 is provided with threaded mounting holes, which are fixedly connected to the mounting surface of the external vibration and impact test bench through fasteners.

[0024] The side portions of the side support plates 2 are laterally connected with a plurality of ribs to enhance the support strength.

[0025] The side support plate 2 is provided with a total of 8 threaded side mounting holes 21 for fixing the test piece.

[0026] Five M18 first threaded mounting holes 22 and five M18 second threaded mounting holes 31 are respectively provided on the upper end of the side support plate 2 and on both sides of the hanging plate 3. The side support plate 2 and the hanging plate 3 are screwed together.

[0027] The hanging plate 3 is provided with a hanging column 4 and a positioner 5 for quickly installing and fixing the test piece. The lower end of the hanging column 4 is provided with a hanging hole 41.

[0028] The installation steps of the test fixture are as follows:

[0029] 1. Screw the side support plate 2 and the bottom plate 1 together;

[0030] 2. Then fix the base plate 1 and the vibration table;

[0031] 3. Connect the test piece (casing and accessories) to the hanging plate 3 (the hanging column 4 and the positioner 5 are welded to the hanging plate 3), and then connect them together to the side support plate 2.

[0032] By replacing different hanging plates 3, hanging columns 4 and positioners 5, test pieces of different specifications and models in the same product category can be realized, while the bottom plate 1 and side support plates 2 of the fixture body do not need to be replaced. This fixture can save costs, increase efficiency and improve the uniformity of test quality.

[0033] Compared with the existing technology, the detachable vibration and impact test fixture provided by the utility model can, first, effectively connect the gas turbine casing structure, thereby meeting the complex fixation requirements of the gas turbine casing, saving valuable test time and test costs, improving the quality of the mechanical test of the gas turbine casing structure, facilitating wide application, and having great production practical significance; second, it can effectively complete design verification and real environment assessment, which is of great significance to improving the development of my country's aerospace, and can effectively solve the problems of high test cost, time-consuming and difficult to unify fixtures in existing mechanical tests such as gas turbine casing vibration and impact tests.

[0034] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of the present utility model.

Claims

1. A detachable vibration impact test fixture, characterized in that: The invention comprises a base plate (1), a pair of side support plates (2) are symmetrically arranged on both sides of the base plate (1), a hanging plate (3) is detachably arranged above the pair of side support plates (2), a hanging column (4) and a positioner (5) are arranged on the bottom surface of the hanging plate (3), a hanging hole (41) is arranged at the lower end of the hanging column (4), and the base plate (1) is fixed to the vibration test bench by fasteners.

2. The detachable vibration shock test fixture according to claim 1, characterized in that: The side support plate (2) is provided with a side mounting hole (21).

3. The detachable vibration shock test fixture according to claim 1, characterized in that: The base plate (1) and the hanging plate (3) are both square plates.

4. The detachable vibration shock test fixture according to claim 1, characterized in that: The two ends of the hanging plate (3) are screwed together with the side support plate (2).

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