CN214224728U

CN214224728U - Can realize tensile compression state's of bellows type buffer structure mechanical test anchor clamps

Info

Publication number: CN214224728U
Application number: CN202022959096.8U
Authority: CN
Inventors: 孙玉昆; 王和; 陈国一; 杜一鸣; 呼东亮
Original assignee: Beijing Institute of Structure and Environment Engineering; Tianjin Aerospace Ruilai Technology Co Ltd
Current assignee: Beijing Institute of Structure and Environment Engineering; Tianjin Aerospace Ruilai Technology Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-09-17
Anticipated expiration: 2030-12-11

Abstract

The utility model relates to a can realize tensile compression state's of bellows type buffer structure mechanical test anchor clamps, characterized by: including controlling split type anchor clamps main part, the vice and the bellows connecting piece of connecting screw rod, the shape of cross section of anchor clamps main part is L shape, and the bottom surface and the test bench of anchor clamps main part are connected, and four corners equipartition has four round holes about the perpendicular of anchor clamps main part, and it is vice to run through the connecting screw rod in the round hole respectively, is equipped with a plurality of screws of being connected with the bellows connecting piece on the perpendicular of anchor clamps main part, the bellows connecting piece passes through the screw and is connected with the bellows test piece. Has the advantages that: the distance of the clamp of the utility model is adjustable, the clamp can completely simulate the stretching-free-compression state of the diaphragm capsule buffer structure test piece, and the reasonable implementation of the test is ensured; the fixture can adapt to the installation of various diaphragm capsule type buffer structures of different models; the main aluminum structure is light. The problems that the existing diaphragm capsule type buffer structural member mechanical test is high in test cost, time-consuming and difficult to unify clamps can be effectively solved.

Description

Can realize tensile compression state's of bellows type buffer structure mechanical test anchor clamps

Technical Field

The utility model belongs to the anchor clamps field especially relates to a can realize tensile compression state's of bellows type buffer structure mechanical test anchor clamps.

Background

The diaphragm capsule type buffer structure matched with a certain type of aerospace engine is formed by welding a plurality of large and small diaphragm sheets by electron beams respectively, and then forms two coaxial diaphragm capsule series-parallel connection assemblies by electron beam welding with other parts. The membrane box assembly has more welding lines, and the use function of a product is reduced or even fails due to the leakage of any welding line. The vibration, impact and acceleration tests are one of important items for examining the environmental adaptability of the bellows type buffering structural part. In the development stage, the rationality of the design structure and the welding process is verified through a plurality of tests. Aiming at test projects in the research and development stage of a certain type of bellows type buffer structural member, a series of mechanical experiments such as an acceleration test, an ignition impact test, a landing impact test, an autonomous flight vibration test, a road transportation test and the like need to be carried out, and meanwhile, the tension and compression adjustment in a working state needs to be met.

Reasonable verification and test technical improvement are made for the development of a bellows type buffer structural part product in the aerospace industry in China, and a clamp which can greatly meet the mechanical test requirement of the bellows type buffer structural part and better verify whether the design of the bellows type buffer structural part is reasonable is urgently needed to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mechanical test fixture which can realize the tensile compression state of a bellows type buffer structure in order to overcome the defects in the prior art, can greatly meet the mechanical test requirements of the bellows type buffer structure, better verifies whether the design of the bellows type buffer structure is reasonable or not, improves the safety of an aerospace engine,

the utility model discloses a realize above-mentioned purpose, realize through following technical scheme, a can realize tensile compression state's of bellows type buffer structure mechanical test anchor clamps, characterized by: including controlling split type anchor clamps main part, the vice and the bellows connecting piece of connecting screw rod, the shape of cross section of anchor clamps main part is L shape, and the bottom surface and the test bench of anchor clamps main part are connected, and four corners equipartition has four round holes about the perpendicular of anchor clamps main part, and it is vice to run through the connecting screw rod in the round hole respectively, is equipped with a plurality of screws of being connected with the bellows connecting piece on the perpendicular of anchor clamps main part, the bellows connecting piece passes through the screw and is connected with the bellows test piece.

Furthermore, the bottom surface of the clamp main body is provided with a long groove-shaped mounting hole.

Furthermore, a right-angle reinforcing rib plate is fixedly connected to the clamp main body and is fixedly connected with the bottom surface and the vertical surface of the clamp main body respectively.

Further, the middle position of the side wall of the clamp body is fixedly connected with a graduated scale, and the graduated scale is welded on the side wall of the left clamp body or the right clamp body in a single-sided mode.

Has the advantages that: compared with the prior art. The distance of the clamp of the utility model is adjustable, so that the clamp can completely simulate the stretching-free-compression state of the diaphragm capsule buffer structure test piece, and the reasonable implementation of the test is ensured; the interchangeability of the detachable connecting piece ensures that the clamp can adapt to the installation of various types of bellows type buffer structures; the operation cost is low, and the investment can be quickly recovered: compared with the traditional mechanical test fixture of the diaphragm capsule buffer structure, test pieces of different types only need to be replaced by different connecting pieces, so that the cost is low; low investment cost, no occupation of building area: the total occupied area of the clamp is 1m²Left and right, the main aluminum structure is betterIs light and convenient. The problems that the existing diaphragm capsule type buffer structural member mechanical test is high in test cost, time-consuming and difficult to unify clamps can be effectively solved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the main body of the clamp;

FIG. 3 is a schematic view of the bellows connector;

FIG. 4 is a schematic view of the bellows connector;

FIG. 5 is a schematic view of the film box mounted buffer structure test piece of the present invention;

FIG. 6 is a schematic structural view of a bellows buffer structure test piece.

In the figure: 1. the clamp comprises a clamp body, 1-1 parts of reinforcing rib plates, 2 parts of long groove-shaped mounting holes, 3 and 4 parts of bellows connecting pieces, 5 parts of connecting screw rod pairs, 5-1 parts of screw rods, 5-2 parts of nuts, 6 parts of graduated scales, 7 parts of bellows mounting holes, 8 parts of bellows buffer structure test pieces.

Detailed Description

The following detailed description of the embodiments according to the present invention with reference to the preferred embodiments is as follows: the drawing is shown in detail, the embodiment provides a mechanical test fixture capable of realizing the tensile compression state of a bellows type buffer structure, the mechanical test fixture comprises a left split type fixture main body 1, a right split type fixture main body 5, a connecting screw rod pair 5 and bellows

type connecting pieces

3 and 4, the cross section of the fixture main body is L-shaped, the bottom surface of the fixture main body is connected with a test bed, four round holes are uniformly distributed at the upper corner and the lower corner of the vertical surface of the fixture main body, the round holes are respectively penetrated through the connecting screw rod pair 5, a plurality of screw holes connected with the bellows type connecting pieces are formed in the vertical surface of the fixture main body, and the bellows type connecting pieces are connected with the bellows type testing pieces through screws. The clamp main body is fixedly connected with right-angle reinforcing rib plates 1-1 which are respectively and fixedly connected with the bottom surface and the vertical surface of the clamp main body, and the right-angle reinforcing rib plates can reinforce the rigidity of the clamp main body.

In the preferred scheme of this embodiment, the bottom surface of the clamp main body is provided with a long groove-shaped mounting hole 2.

The preferred scheme of this embodiment is, anchor clamps main part lateral wall intermediate position rigid coupling has scale 6, and the unilateral welding of scale is on left anchor clamps main part or right anchor clamps main part lateral wall.

Referring to fig. 6 in detail, the bellows is in a cylindrical cavity structure, and the diameters of various models are different, so that the connecting piece needs to be replaced. The connecting piece hole site is used for fixed diaphragm capsule and anchor clamps main part through the screw, and the connecting piece diameter is different, is used for the diaphragm capsule of different models.

The structure and operation principle of the present embodiment will be further explained with reference to the drawings

The mechanical test fixture in the tensile and compression state of the buffer structure comprises a left fixture main body and a right fixture main body which are separated, wherein the bottom mounting surface of the fixture main body is used for connecting mounting surfaces of test beds for external vibration, impact, acceleration and the like, and an opening is a long groove-shaped mounting hole, so that the mounting distance is convenient to adjust; the vertical surface of the clamp body is in threaded connection with the connecting piece 3, the surface of the connecting piece is provided with a screw hole and a diaphragm capsule mounting hole 7 which are correspondingly connected with the diaphragm capsule connecting piece connecting screw hole on the vertical surface of the clamp body, the connecting piece can be disassembled, diaphragm capsule buffer structure test pieces 8 with different diameters can be replaced, the clamp body does not need to be replaced, the cost is saved, the efficiency is high, and the uniformity of the test quality is improved; the round hole on the outer circumference of the connecting piece is used for being fastened with the bellows buffer structure test piece sleeved with the round hole through a screw. The removable connecting piece of the anchor clamps design of this embodiment through adjusting different sizes, can carry out the installation and the intensity test of multiple model product. The working efficiency and the accuracy of data acquisition are improved.

The embodiment is used for an aerospace bellows type buffer structure test system, mechanical test detection for the bellows type buffer structure is provided, the actual installation state of the bellows type buffer structure is simulated, the problem that a common clamp cannot completely simulate the installation state of the bellows type buffer structure is solved, four M12 screw rods 5 on a clamp main body and nuts installed on the screw rods form a connecting screw rod pair 5, the distance of the clamp is adjusted by adjusting the screw rod pair, mechanical tests such as vibration, impact or acceleration can be simulated in three states of stretching-free-compression, and the design verification technology and the real environment simulation principle of the bellows type buffer structure for real simulation environment assessment are guaranteed. In actual operation, the inside of the diaphragm capsule buffer structure test piece is provided with an elastic structure

1. When the simulated bellows type buffer structure is in a stretching state, the inner nuts on the four screw rods are screwed outwards, so that the left and right clamp bodies can move outwards respectively, and at the moment, the elastic structure in the test piece of the bellows type buffer structure can be stretched to reach the stretching state;

2. when the simulated bellows type buffering structure is in a free state, the inner and outer nuts on the four screw rods are all loosened, so that the left and right clamp bodies are in a loosened state, and at the moment, the elastic structure in the test piece of the bellows type buffering structure is loosened to reach the loosened state;

3. the simulated bellows type buffering structure completely loosens the inner side nuts on the four screw rods in a compression state, the outer side nuts are screwed inwards, the left clamp body and the right clamp body can be in a compression state, and at the moment, the elastic structure in the test piece of the bellows type buffering structure can be compressed to reach the compression state. The lateral graduated scale 6 can measure the distance to be adjusted and ensure the level of adjustment. The fixture capable of simulating three states can be realized.

The above detailed description of the mechanical test fixture for realizing the tensile and compressive states of the bellows type cushion structure with reference to the embodiments is illustrative and not restrictive, and several embodiments can be enumerated according to the limited scope, so that changes and modifications without departing from the general concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a can realize tensile compression state's of bellows type buffer structure mechanical test anchor clamps which characterized by: including controlling split type anchor clamps main part, the vice and the bellows connecting piece of connecting screw rod, the shape of cross section of anchor clamps main part is L shape, and the bottom surface and the test bench of anchor clamps main part are connected, and four corners equipartition has four round holes about the perpendicular of anchor clamps main part, and it is vice to run through the connecting screw rod in the round hole respectively, is equipped with a plurality of screws of being connected with the bellows connecting piece on the perpendicular of anchor clamps main part, the bellows connecting piece passes through the screw and is connected with the bellows test piece.

2. The mechanical test fixture capable of realizing the tensile and compressive states of the bellows type buffer structure as claimed in claim 1, wherein: and the bottom surface of the clamp main body is provided with a long groove-shaped mounting hole.

3. The mechanical test fixture capable of realizing the tensile and compressive states of the bellows type buffer structure as claimed in claim 1 or 2, wherein: the clamp main body is fixedly connected with a right-angle reinforcing rib plate which is fixedly connected with the bottom surface and the vertical surface of the clamp main body respectively.

4. The mechanical test fixture capable of realizing the tensile and compressive state of the bellows type buffer structure as claimed in claim 3, wherein: the middle position of the side wall of the clamp body is fixedly connected with a graduated scale, and the graduated scale is welded on the side wall of the left clamp body or the right clamp body in a single-sided mode.