CN219624891U

CN219624891U - Vibration acceleration sensor fixing tool for vibration test of hydraulic pipeline of airplane

Info

Publication number: CN219624891U
Application number: CN202320155585.9U
Authority: CN
Inventors: 刘玉柱; 郭海利; 许绝舞; 杨静思
Original assignee: State Run Wuhu Machinery Factory
Current assignee: State Run Wuhu Machinery Factory
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-09-01
Anticipated expiration: 2033-02-08

Abstract

The utility model relates to the technical field of measurement of vibration intensity of an aircraft hydraulic pipeline, in particular to a vibration acceleration sensor fixing tool for an aircraft hydraulic pipeline vibration test, which comprises the following components: a tube body; the clamping block is matched and attached to the surface of the pipe body and used for fixing the vibration acceleration sensor; and the clamping hoop is arranged on the clamping block and is used for fixedly connecting the clamping block with the pipe body after the clamping block is matched and attached to the surface of the pipe body. The utility model has the characteristics of small shape and size, light weight, good matching performance and the like, and can meet all hydraulic pipelines of an aircraft needing to be tested by arranging the fixing devices with different sizes according to different pipeline diameters, thereby greatly simplifying the arrangement method of the pipeline vibration acceleration sensor and improving the efficiency and accuracy of pipeline vibration acceleration measurement.

Description

Vibration acceleration sensor fixing tool for vibration test of hydraulic pipeline of airplane

Technical Field

The utility model relates to the technical field of measurement of vibration intensity of an aircraft hydraulic pipeline, in particular to a vibration acceleration sensor fixing tool for an aircraft hydraulic pipeline vibration test.

Background

The hydraulic system is an important component of the aircraft and is used for controlling the motion of each control surface so as to realize the attitude control of the aircraft, and a conduit used in the hydraulic system is directly used for transmitting the operation power of the aircraft, so that the working reliability of the hydraulic system directly influences the working reliability of the whole aircraft. A series of aircraft hydraulic systems of a certain model mainly adopt stainless steel pipes, the problem of pipe fracture occurs frequently, pipe fracture has obvious fatigue fracture characteristics, macroscopic fatigue arcs and radial ridge characteristics, microscopic fatigue strips are characteristic, and failure is caused by vibration fatigue fracture of the root of a pipe bushing, so that the safety use of an aircraft external field is seriously influenced.

The vibration of the pipeline system is an important influence factor causing fatigue cracks of the pipeline, the vibration of the hydraulic pipeline is tested and analyzed by utilizing a vibration stress testing technology, whether the vibration stress value of the hydraulic pipeline of the aircraft is abnormal or not can be effectively monitored, the abnormal vibration point of the hydraulic pipeline is solved, and the working reliability of the hydraulic pipeline is improved. Currently, the dynamic stress of aircraft hydraulic ducts is achieved by affixing strain gauges at the nozzles. In actual operation, the operator cannot paste the strain gauge at an accurate position under the restriction of pasting conditions, and in order to ensure the flight safety of an aircraft, the operator must know the vibration intensity of the hydraulic conduit in the driving state of the aircraft engine and use the hydraulic conduit for carrying out vibration mode experiments, so that a vibration acceleration sensor must be additionally arranged on a pipeline.

Because the pipeline is cylindrical, acceleration sensor is mostly square, at present when installing acceleration sensor additional, adopts bonding or with the fixed method of stickness material more, drops easily in the use, and the stickness material in the middle can play the cushioning effect, leads to measuring quantity error great.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a vibration acceleration sensor fixing tool for an airplane hydraulic pipeline vibration test.

The technical problems to be solved by the utility model are realized by adopting the following technical scheme:

a vibration acceleration sensor fixing tool for an aircraft hydraulic line vibration test, comprising:

a tube body;

the clamping block is matched and attached to the surface of the pipe body and used for fixing the vibration acceleration sensor;

and the clamping hoop is arranged on the clamping block and is used for fixedly connecting the clamping block with the pipe body after the clamping block is matched and attached to the surface of the pipe body.

Preferably, the size of the pipe body ranges from phi 6mm to phi 22mm.

Preferably, the clamping block is provided with a fitting groove which is fit with the pipe body.

Preferably, the size of the fitting groove is matched with the size of the pipe body.

Preferably, the clamping block is provided with a fixing recess for fixing the vibration acceleration sensor.

Preferably, the dimensions of the fixing recess are 15mm by 10mm.

Preferably, through holes are correspondingly formed in the bottom, the rear side and the right side wall of the fixing recess.

Preferably, the clamping block is provided with a rectangular arc-shaped slot for the clamp to pass through.

Preferably, the clamp comprises a strap penetrating through the arc-shaped groove of the rectangular opening and a buckle for locking the strap.

The beneficial effects of the utility model are as follows:

the utility model has the characteristics of small shape and size, light weight, good matching performance and the like, and can meet all hydraulic pipelines of an aircraft needing to be tested by arranging the fixing devices with different sizes according to different pipeline diameters, thereby greatly simplifying the arrangement method of the pipeline vibration acceleration sensor and improving the efficiency and accuracy of pipeline vibration acceleration measurement.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram showing a connection structure between a clamping block and a clamping band according to the present utility model;

FIG. 3 is a second schematic diagram of a connection structure between a clamping block and a clamping band according to the present utility model;

fig. 4 is a schematic diagram of a connection structure between a clamping block and a clamping band in the present utility model.

In the figure: 1. a tube body; 2. a clamping block; 21. a bonding groove; 22. a fixed recess; 23. a through hole; 24. a rectangular opening arc-shaped groove; 3. a clamp; 31. a band; 32. and (5) a buckle.

Detailed Description

In order that the manner in which the utility model is attained, as well as the features and advantages thereof, will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

As shown in fig. 1 to 4, a vibration acceleration sensor fixing tool for an aircraft hydraulic pipeline vibration test mainly comprises a pipe body 1, a clamping block 2 and a clamping hoop 3. The clamping block 2 is attached to the surface of the pipe body 1, and the clamping hoop 3 penetrates through the clamping block 2 and the pipe body 1 to fixedly connect the clamping block 2 with the pipe body 1.

The size range of the pipe body 1 is phi 6 mm-phi 22mm, and concretely, phi 6mm, phi 8mm, phi 10mm, phi 12mm, phi 16mm and phi 22mm.

One side of the clamping block 2 is provided with a fitting groove 21, the fitting groove 21 is of a semi-cylindrical structure, and the size of the fitting groove 21 is matched with the size of the pipe body 1; the fixture block 2 has offered fixed recess 22 on the lateral wall opposite with laminating groove 21, fixed recess 22 is used for fixed vibration acceleration sensor, in this embodiment, the size of fixed recess 22 is 15mm x 10mm, the bottom of fixed recess 22, rear side, right side are equipped with three fixed surface, and during the use, fix vibration acceleration sensor through the mode of bonding in fixed recess 22, further, three through-holes 23 have been seted up on the bottom of fixed recess 22, rear side, right side lateral wall correspondence for be convenient for take off vibration acceleration sensor after the measurement.

The clamp 3 is composed of a strap 31 and a buckle 32. Rectangular opening arc grooves 24 are formed in the side walls of the fitting grooves 21 on the clamping blocks 2, inlets and outlets of the rectangular opening arc grooves 24 are formed in the left side and the right side of the fitting grooves 21, the hoops 31 penetrate through the rectangular opening arc grooves 24 and are connected with the clamping blocks 2, and the buckles 32 are used for locking two ends of the hoops 31.

The working principle and the using flow of the utility model are as follows:

firstly, selecting a clamping block 2 with an adaptive size according to the diameter size of a pipe body 1; then, selecting a measuring position, after selecting the position to be measured, completely attaching the attaching groove 21 of the clamping block 2 to the surface of the pipe body 1, locking the two ends of the strap 31 through the buckle 32, fixing the clamping block 2 at the measuring position on the pipe body 1, then fixedly mounting the vibration acceleration sensor in the fixing recess 22 through 502 glue, adjusting the measured X, Y, Z direction, connecting the line of the vibration acceleration sensor, debugging and collecting data of the vibration acceleration, firstly removing the clamping block 2 from the pipe body 1 after the collection is finished, and then removing the vibration acceleration sensor from the fixing recess 22 through the three through holes 23, so as to develop subsequent data analysis work.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a vibration acceleration sensor fixing tool for aircraft hydraulic line vibration test which characterized in that: comprising the following steps:

a tube body (1);

the clamping block (2) is matched and attached to the surface of the pipe body (1), and the clamping block (2) is used for fixing the vibration acceleration sensor;

the clamping hoop (3) is arranged on the clamping block (2) and is used for fixedly connecting the clamping block (2) with the pipe body (1) after the clamping block (2) is matched and attached to the surface of the pipe body (1).

2. The vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 1, wherein: the size of the pipe body (1) is in the range of phi 6 mm-phi 22mm.

3. The vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 2, wherein: and the clamping block (2) is provided with a fitting groove (21) which is matched and fitted with the pipe body (1).

4. A vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 3, wherein: the size of the fitting groove (21) is matched with the size of the pipe body (1).

5. The vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 1, wherein: the clamping block (2) is provided with a fixing recess (22) for fixing the vibration acceleration sensor.

6. The vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 5, wherein: the dimensions of the fixing recess (22) are 15mm by 10mm.

7. The vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 5, wherein: through holes (23) are correspondingly formed in the bottom, the rear side and the right side wall of the fixed recess (22).

8. The vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 1, wherein: the clamping block (2) is provided with a rectangular arc-shaped slot (24) for the clamp (3) to pass through.

9. The vibration acceleration sensor fixing tool for vibration test of an aircraft hydraulic line according to claim 8, wherein: the clamp (3) comprises a clamp band (31) penetrating through the rectangular-opening arc-shaped groove (24) and a buckle (32) for locking the clamp band (31).