CN110926741A

CN110926741A - High-temperature-resistant high-strength L-shaped structure response guide rod with heat insulation naan

Info

Publication number: CN110926741A
Application number: CN201911413286.5A
Authority: CN
Inventors: 宋鑫; 郑冠男; 杨国伟; 聂雪媛; 黄程德; 黄杰; 徐铭杰; 陈军屹
Original assignee: Institute of Mechanics of CAS
Current assignee: Institute of Mechanics of CAS
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-03-27
Anticipated expiration: 2039-12-31
Also published as: CN110926741B

Abstract

The embodiment of the invention relates to a high-temperature-resistant high-strength L-shaped structure response guide rod with a heat insulation naan, which comprises: the device comprises a test piece, wherein guide rods are connected to the upper surface of the test piece in a threaded manner and are symmetrically arranged in a front-back manner, the guide rods are L-shaped, the short ends of the guide rods are connected with the test piece, the long ends of the guide rods are connected with a normal-temperature acceleration sensor, and the short ends and the long ends of the guide rods are connected through double-head threads. High temperature resistant high strength L type structural response guide arm of thermal-insulated naan in area, adopt high temperature resistant high strength light L type ceramic guide arm will respond to the region of conducting to keeping away from the test piece, wherein the guide arm short-end passes through bolted connection on the test piece surface, normal atmospheric temperature acceleration sensor is connected to the long-end, and wrap up with thermal-insulated naan, reduce the influence of temperature to the sensor, the guide arm of installation should have certain distance with upper and lower thermal compensator, guarantee that the test piece vibrates the in-process guide arm not bump with temperature compensator, therefore, can realize having reached the effect of better measurement test piece surface vibration response.

Description

High-temperature-resistant high-strength L-shaped structure response guide rod with heat insulation naan

Technical Field

The embodiment of the invention relates to test piece detection, in particular to a high-temperature-resistant high-strength L-shaped structure response guide rod with a heat insulation naan.

Background

The reciprocating motion of an object or particle relative to a position of equilibrium is called vibration. The vibration is divided into sinusoidal vibration, random vibration, composite vibration, scanning vibration and fixed frequency vibration. The main parameters describing the vibrations are: displacement, velocity, acceleration, vibrational acceleration, and vibration level. Testing of physical or modeled vibration systems in the field or laboratory. A vibration system is a mass elastic system excited by a vibration source, such as a machine, structure or component thereof, a biological body, or the like. The vibration test is developed from the aerospace department, is popularized to various industrial departments such as power machinery, transportation, buildings and the like, and has increasingly wide application in the aspects of environmental protection and labor protection. The vibration test comprises the contents of response measurement, dynamic characteristic parameter determination, load identification, vibration environment test and the like. According to the existing testing device, a guide rod vibrates along with a test piece and possibly collides with a thermal compensator, so that measurement errors are caused.

Disclosure of Invention

In view of this, to solve the above technical problems or some technical problems, the embodiment of the present invention provides a high temperature resistant high strength L-shaped structure response guide rod with a heat insulation naan.

In a first aspect, the embodiment of the invention provides a high-temperature-resistant high-strength L-shaped structure response guide rod with a heat insulation naan, which comprises: the test piece, the upper surface threaded connection of test piece has the guide arm, the guide arm is symmetrical arrangement from beginning to end, the shape of guide arm is L shape, the short end of guide arm links to each other with the test piece, the long end of guide arm links to each other with normal atmospheric temperature acceleration sensor, pass through right angle double thread connection between the short end of guide arm and the long end, the double thread material is unanimous with L type guide arm.

Optionally, the guide rod is made of high-temperature-resistant ceramic.

Optionally, the connection part of the guide rod and the normal temperature acceleration sensor is wrapped by a heat insulation naan.

Optionally, the guide rod has a mass of 0.45 g.

Optionally, the material of the double-thread (3) is consistent with that of the L-shaped guide rod.

Optionally, the double thread (3) is a right-angle double thread (3).

The high-temperature-resistant high-strength L-shaped structural response guide rod with the heat-insulating crusty pancake provided by the embodiment of the invention adopts the high-temperature-resistant high-strength light L-shaped ceramic guide rod to conduct the response to a region far away from a test piece, wherein the short end of the guide rod is connected with the surface of the test piece through a bolt, the long end is connected with a normal temperature acceleration sensor, the short end and the long end of the guide rod are connected through double-thread, the installed guide rod has a certain distance with the upper and lower thermal compensators, the guide rod is prevented from vibrating along with the test piece in the test process, the guide rod is ensured not to collide with the temperature compensator in the test piece vibrating process, the guide rods are symmetrically installed in pairs when in use, the torsional moment can be reduced, but the bending moment cannot be avoided, so that the guide rod is made of light materials, thereby avoiding the influence brought by extra moment and achieving the corresponding effect of better measuring the surface vibration of the test piece.

Drawings

FIG. 1 is a schematic structural view of a high temperature resistant high strength L-shaped structural response guide rod with a heat insulation naan provided by the embodiment of the invention;

FIG. 2 is a schematic structural diagram of a guide bar according to an embodiment of the present invention;

FIG. 3 is a schematic view of a right-angle double-start thread provided by an embodiment of the present invention.

In the figure: 1-guide rod, 2-test piece and 3-double thread.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For the convenience of understanding of the embodiments of the present invention, the following description will be further explained with reference to specific embodiments, which are not to be construed as limiting the embodiments of the present invention.

Referring to fig. 1 and 2, the method includes: the upper surface of the test piece 2 is in threaded connection with the guide rods 1, the guide rods 1 are symmetrically arranged in the front-back direction, the guide rods are mounted on the test piece, and the test piece vibrates, so that if the compensator and the test piece guide rods are unreasonably mounted, collision is likely to occur, if the guide rods are not symmetrically mounted, the test piece generates torsion moment due to the guide rods, the torsion moment is generated, the movement is outside the excitation effect, the surplus is avoided as much as possible, the guide rods are symmetrically mounted, the torsion moment can be reduced, and the bending moment cannot be avoided. The shape of guide arm 1 is L shape, and the short end of guide arm 1 links to each other with test piece 2, and the long end of guide arm 1 links to each other with normal atmospheric temperature acceleration sensor, is connected through double thread (3) between the short end of guide arm and the long end, double thread (3) material is unanimous with L type guide arm, as shown in fig. 3, and is right angle double thread.

The material of guide arm 1 is high temperature resistant ceramic material, reduces the influence of high temperature, reduces the influence of temperature to the sensor.

The connecting part of the guide rod 1 and the normal temperature acceleration sensor is wrapped by a heat insulation naan.

The guide rod 1 has a mass of 0.45g, and the guide rod has a mass, so that the test piece generates an additional bending moment, and in order to simulate the problem in the numerical calculation, a concentrated mass is provided at the position where the guide rod is installed.

Install on the test piece through the guide arm, the test piece vibration, therefore if compensator and test piece guide arm installation are unreasonable, just can collide, if the guide arm is not symmetrical installation, then because the guide arm is the reason, the test piece will produce torsional moment, take place to twist, the outer motion of this motion excitation effect, therefore be unnecessary, avoid as far as possible, the guide arm symmetry installation can reduce torsional moment, but can not avoid bending moment, the test piece vibration, vibration signal need derive and measure, the effect of guide arm is exactly with vibration signal transfer to the place of being convenient for to measure, the guide arm adopts the symmetry in pairs installation, can reduce torsional moment, but can not avoid bending moment, therefore the guide arm adopts light material, thereby avoid the influence that extra moment brought.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a high temperature resistant high strength L type structural response guide arm of thermal-insulated crusty pancake in area which characterized in that includes: the test piece (2), the upper surface threaded connection of test piece (2) has guide arm (1), symmetrical arrangement around guide arm (1) is, the shape of guide arm (1) is L shape, the short-end of guide arm (1) links to each other with test piece (2), the long-end of guide arm (1) links to each other with normal atmospheric temperature acceleration sensor, be connected through double thread (3) between the short-end of guide arm and the long-end.

2. The high-temperature-resistant high-strength L-shaped structure response guide rod as claimed in claim 1, wherein the guide rod (1) is made of high-temperature-resistant ceramic material.

3. The high-temperature-resistant high-strength L-shaped structure response guide rod as claimed in claim 1, wherein the connection part of the guide rod (1) and the normal temperature acceleration sensor is wrapped by a heat insulation Nang.

4. The high temperature resistant high strength L-shaped structural response guide bar of claim 1, wherein the guide bar (1) has a mass of 0.45 g.

5. The high-temperature-resistant high-strength L-shaped structural response guide rod as claimed in claim 1, wherein the double-start thread (3) is made of the same material as the L-shaped guide rod.

6. The high temperature resistant, high strength L-shaped structural response guide rod of claim 1, wherein the double start threads (3) are right angle double start threads (3).