CN212228837U - Fixing device of acoustic emission sensor - Google Patents

Abstract

The utility model provides a fixing device of an acoustic emission sensor, which comprises a bracket and adsorption mechanisms at the two ends of the bracket, wherein a support is arranged between the bracket and the adsorption mechanisms, the support is fixed at the top of the adsorption mechanisms, and the support is connected with the tail end of the bracket through a cylindrical pin shaft with a clamp spring; a screw rod penetrates through the middle of the support, an adjusting hand wheel is welded at the top of the screw rod, the bottom of the screw rod is connected with a bottom support, and a spring penetrates through the screw rod on the outer side between the support and the bottom support; the opening of the bottom support faces downwards, and grooves are symmetrically formed in the lower edge of the bottom support. The utility model has the advantages that: structural design is reasonable, and the operation is simple and easy, and the dismouting maintenance is convenient.

Description

Fixing device of acoustic emission sensor

Technical Field

The utility model relates to an acoustic emission detects technical field, concretely relates to acoustic emission sensor's fixing device.

Background

With the continuous progress of acoustic emission detection technology, acoustic emission detection technology has been widely used in the inspection, detection and monitoring of pressure vessels, storage tanks, pipelines and other equipment as an important technical means for nondestructive detection. The basic principle of acoustic emission detection technology is to convert the elastic wave generated by the acoustic emission source in the material into an electric signal by using a sensor coupled on the surface of the material, and then amplify the electric signal by using electronic equipment to characterize the electric signal, and display and record the electric signal, so as to obtain the characteristic parameters of the acoustic emission source in the material. The defect condition of the interior of the material can be known by analyzing various parameters obtained by the acoustic emission instrument in the detection process.

Acoustic emission detection techniques use sensors that convert elastic waves generated by an acoustic emission source within the material of the detection device into electrical signals that are transmitted to the electronics for analysis. In order to make the acoustic emission sensor function successfully, the sensor needs to be tightly fixed on the detection surface so as to ensure that the sensor can provide continuous signals for electronic equipment. The existing fixing device of the acoustic emission sensor adopts a magnetic seat as an adsorption mechanism to fix the acoustic emission sensor on the detection surface of ferromagnetic material equipment, and has the advantages of stable adsorption, simple and quick operation and the like. However, with the continuous development of industrial production and the rapid advance of scientific technology, new requirements are put on the acoustic emission detection technology, such as diversity of detection objects, improvement of precision requirements and widening of detection range. The existing detection object of the acoustic emission detection technology is not limited to a single ferromagnetic material device, but is often encountered in on-site detection by non-ferromagnetic material devices such as austenitic stainless steel, non-metallic materials, general non-ferrous metals and the like. To non-ferromagnetic material, magnet on the magnetic base can't reach the function of its absorption, lead to acoustic emission sensor can't be fixed in the detection face, the inspector often adopts quick glue to glue the magnetic base temporarily at the detection face when meetting non-ferromagnetic material, and then fixes acoustic emission sensor in the detection face, this mode has solved the unable fixed problem of sensor to a certain extent, but brought the unable further sensor of regulation behind the magnetic base sticky fixed, or the viscose viscidity is not enough causes the sensor to drop midway, and then make the invalid new drawbacks such as need retest of acoustic emission detection for several hours, moreover glue is difficult for solidifying under the low temperature condition and forms viscidity, make acoustic emission detection be difficult to develop the detection under the low temperature condition more.

Therefore, aiming at the defects of the prior art, an acoustic emission sensor fixing device which can be used for non-ferromagnetic material equipment needs to be developed, the acoustic emission sensor is stably fixed on a non-ferromagnetic material detection surface, and the acoustic emission detection is smoothly developed.

Disclosure of Invention

The utility model aims at providing a fixing device of acoustic emission sensor that structural design is reasonable, the operation is simple and easy, dismouting maintenance is convenient.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a fixing device of an acoustic emission sensor comprises a support and adsorption mechanisms at two ends of the support, wherein a support is arranged between the support and the adsorption mechanisms, the support is fixed at the top of the adsorption mechanisms, and the support is connected with the tail end of the support through a cylindrical pin shaft with a clamp spring; a screw rod penetrates through the middle of the support, an adjusting hand wheel is welded at the top of the screw rod, the bottom of the screw rod is connected with a bottom support, and a spring penetrates through the screw rod on the outer side between the support and the bottom support; the opening of the bottom support faces downwards, and grooves are symmetrically formed in the lower edge of the bottom support.

Further, the adsorption mechanism sequentially comprises a rubber sucker, a sucker supporting shell, a lifting rod, a reinforcing plate and a pressing buckle from bottom to top, the sucker supporting shell is fixedly connected with the rubber sucker, the lifting rod is penetrated through the center of the sucker supporting shell, one end of the lifting rod is fixedly connected to the rubber sucker, the other end of the lifting rod is hinged to the pressing buckle through a flat-head cylindrical pin, the lifting rod penetrates through a spring between the sucker supporting shell and the rubber sucker in the outer side, the reinforcing plate is arranged between the pressing buckle and the sucker supporting shell, the reinforcing plate is fixedly connected to the sucker supporting shell, and the support is symmetrically arranged on the sucker supporting shell on the two sides of the pressing buckle.

Further, the collet comprises a collet shell, a rubber cushion and a bearing, the opening of the collet shell is downward, the rubber cushion is adhered to the inner surface of the collet shell, and the bearing is arranged at the center of the outer surface of the collet shell.

Furthermore, the screw rod is in threaded connection with the support, and the screw rod is connected with the bottom support through a bearing.

Furthermore, a reinforcing ring is arranged at the joint of the support and the screw rod.

Furthermore, the hand-held part of the adjusting hand wheel is provided with vertical convex patterns.

Furthermore, the hand-touch part of the pressing buckle is provided with a transverse convex line.

Compared with the prior art, the utility model, have following advantage:

the utility model relates to a fixing device of acoustic emission sensor, structural design is reasonable, the operation is simple and easy, the dismouting maintenance is convenient, the problem that non-ferromagnetic material can't adsorb is met in the acoustic emission detection of prior art has been solved, also solved fast glue can't further adjust the sensor after fixing or the viscose viscidity is not enough and lead to the sensor to drop midway and cause the acoustic emission to detect invalid scheduling problem for several hours; the utility model discloses can guarantee that acoustic emission sensor fixes stably on detecting the surface, realize acoustic emission sensor's flexibility, long-time coupling and detecting the face, can guarantee that adsorption apparatus constructs parallel fixation all the time at a plane according to being detected the big or small adjustment adsorption apparatus angle of equipment specification diameter simultaneously, take reed cylindric lock axle convenient and fast ground to change other adsorption apparatus structure that adsorption apparatus is good through the dismouting when adsorption apparatus constructs the adsorption effect bad, ensure going on smoothly that acoustic emission detected.

Drawings

Fig. 1 is a schematic structural diagram of a fixing device of the acoustic emission sensor of the present invention.

Fig. 2 is a schematic sectional view of an adsorption mechanism of a fixing device of an acoustic emission sensor of the present invention.

Fig. 3 is a schematic cross-sectional view of a bottom support of a fixing device of the acoustic emission sensor of the present invention.

Reference numerals: 1. a support; 2. an adsorption mechanism; 21. a rubber suction cup; 22. a suction cup support shell; 23. lifting a pull rod; 24. a reinforcing plate; 25. pressing and buckling; 26. a second spring; 3. a support; 4. a screw; 5. adjusting a hand wheel; 6. a bottom support; 61. a base shell; 62. a rubber cushion; 63. a bearing; 7. and a first spring.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1, an acoustic emission sensor's fixing device, adsorption apparatus 2 including support 1 and support 1 both ends, be equipped with support 3 between support 1 and the adsorption apparatus 2, support 3 is fixed in 2 tops of adsorption apparatus, and support 3 is connected through taking jump ring cylindric lock axle with support 1 end for adsorption apparatus 2 can only carry out circumferential direction and can not carry out axial motion, and adsorption apparatus 2's circumferential direction can guarantee the utility model discloses a fixing device can make single adsorption apparatus 2 be on a parallel with a certain adsorption plane all the time when adsorbing the equipment of different specification diameter sizes, guarantees the absorptive stability of adsorption apparatus 2.

As shown in fig. 2, the adsorption mechanism 2 sequentially comprises, from bottom to top, a rubber suction cup 21, a suction cup support shell 22, a lifting rod 23, a reinforcing plate 24 and a press buckle 25, the rubber suction cup 21 is high at the center and low at the edge, the edge is located at the same horizontal plane, the suction cup support shell 22 is fixedly connected with the rubber suction cup 21, the lifting rod 23 penetrates through the center of the suction cup support shell 22, one end of the lifting rod 23 is fixedly connected with the rubber suction cup 21, the other end of the lifting rod is hinged with the press buckle 25 through a flat cylindrical pin, the lifting rod 23 is connected with a second spring 26 in a penetrating manner at the outer side between the suction cup support, namely, the second spring 26 abuts between the inner wall of the suction cup supporting shell 22 and the top of the rubber suction cup 21, the hand contact part of the press buckle 25 is provided with a transverse convex line, a reinforcing plate 24 is arranged between the press buckle 25 and the suction cup supporting shell 22, the reinforcing plate 24 is fixedly connected to the suction cup supporting shell 22, and the support 3 is symmetrically arranged on the suction cup supporting shell 22 at two sides of the press buckle 25.

As shown in fig. 1, a screw rod 4 is arranged in the middle of the support 1 in a penetrating manner, an adjusting hand wheel 5 is welded at the top of the screw rod 4, a vertical convex pattern is arranged at a holding part of the adjusting hand wheel 5, a bottom support 6 is connected with the bottom of the screw rod 4, and the adjusting hand wheel 5 is rotated to drive the screw rod 4 to move forward or retreat, so that the bottom support 6 is driven to move forward or retreat, and the acoustic emission sensor is further reinforced under the condition of insufficient pretightening force. The screw rod 4 is connected with a spring 7 in a penetrating mode between the support 1 and the bottom support 6, namely the spring 7 is propped between the inner wall of the support 1 and the top of the bottom support 6, and certain pretightening force is provided for fixing the acoustic emission sensor. The screw rod 4 is in threaded connection with the support 1, and a reinforcing ring is arranged at the joint of the support 1 and the screw rod 4.

As shown in fig. 1 and 3, the opening of the bottom support 6 is downward, and the lower edge of the bottom support 6 is symmetrically provided with grooves, so that the acoustic emission sensor can be conveniently placed in the bottom support 6. The shoe 6 comprises a shoe shell 61, a rubber cushion 62 and a bearing 63, wherein the shoe shell 61 is opened downwards. The rubber cushion 62 is bonded on the inner surface of the bottom support shell 61, so that the acoustic emission sensor can be ensured to flexibly contact with the detection surface, and the acoustic emission sensor is prevented from being damaged. The bearing 63 is arranged at the center of the outer surface of the bottom support shell 61, the base shell 61 is fixedly connected with the bearing 63, the screw rod 4 is connected with the bottom support 6 through the bearing 63, the bottom support 6 is prevented from rotating along with the rotation of the screw rod 4, and the acoustic emission sensor is guaranteed to be fixed.

The utility model relates to an acoustic emission sensor's fixing device's application method as follows: firstly, loosening the adjusting hand wheel 5 to ensure that the height of the bottom support 6 from the detection surface is basically equal to the height of the acoustic emission sensor; then, flatly pressing the adsorption mechanism 2 on one side on a detection plane with a smooth and clean surface, and outwards pressing the pressing buckle 25 on the side to ensure that the rubber sucker 21 is in a negative pressure state and adsorbed on the plane; then, placing the acoustic emission sensor in the bottom support 6, flatly pressing the adsorption mechanism 2 on the other side on a detection plane with a smooth and clean surface, and pressing the side pressure buckle 25 outwards to enable the rubber sucker 21 to be in a negative pressure state, so that the whole device is adsorbed on detection equipment; the first pre-tightening spring 7 enables the acoustic emission sensor to be in contact with the detection surface, and the adjusting hand wheel 5 is screwed down, so that the acoustic emission sensor can be stably fixed on the detection surface. After the detection is finished, the adjusting hand wheel 5 is unscrewed, the acoustic emission sensor is manually held, and the press buckle 25 on the rubber suction cup 21 is sequentially lifted upwards, so that the pressure in the rubber suction cup 21 is restored to the atmospheric pressure, and the acoustic emission sensor can be easily taken down. The whole operation process is simple, convenient and practical, and is favorable for popularization.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as the protection scope of the present invention.

Claims (7)

1. A fixing device of an acoustic emission sensor is characterized in that: the support is fixed at the top of the adsorption mechanism, and the support is connected with the tail end of the support through a cylindrical pin shaft with a clamp spring; a screw rod penetrates through the middle of the support, an adjusting hand wheel is welded at the top of the screw rod, the bottom of the screw rod is connected with a bottom support, and a spring penetrates through the screw rod on the outer side between the support and the bottom support; the opening of the bottom support faces downwards, and grooves are symmetrically formed in the lower edge of the bottom support.

2. The acoustic emission sensor mounting apparatus of claim 1, wherein: the adsorption device comprises a rubber sucker, a sucker supporting shell, a lifting rod, a reinforcing plate and a pressing buckle in sequence from bottom to top, the sucker supporting shell is fixedly connected with the rubber sucker, the lifting rod is arranged at the center of the sucker supporting shell in a penetrating mode, one end of the lifting rod is fixedly connected to the rubber sucker, the other end of the lifting rod is hinged to the pressing buckle through a flat-head cylindrical pin, the lifting rod penetrates through a spring between the sucker supporting shell and the rubber sucker in the outer side, the reinforcing plate is arranged between the pressing buckle and the sucker supporting shell, the reinforcing plate is fixedly connected to the sucker supporting shell, and the support is symmetrically arranged on the sucker supporting shell on the pressing buckle.

3. The acoustic emission sensor mounting apparatus of claim 1, wherein: the collet includes collet shell, rubber cushion and bearing, and collet shell opening is down, and collet shell internal surface bonds the rubber cushion, and collet shell surface center is equipped with the bearing.

4. A mounting apparatus for an acoustic emission sensor in accordance with claim 3, wherein: the screw rod is in threaded connection with the support, and the screw rod is connected with the bottom support through a bearing.

5. The acoustic emission sensor mounting apparatus of claim 4, wherein: and a reinforcing ring is arranged at the joint of the support and the screw rod.

6. The acoustic emission sensor mounting apparatus of claim 1, wherein: the hand-held part of the adjusting hand wheel is provided with vertical convex lines.

7. The acoustic emission sensor mounting apparatus of claim 2, wherein: the hand-touch part of the pressing buckle is provided with a transverse convex line.

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