CN212228275U

CN212228275U - Bridge anchor stress acoustic detection excitation device

Info

Publication number: CN212228275U
Application number: CN202021605042.5U
Authority: CN
Inventors: 虢曙安; 刘国坤; 庄保利; 徐朔; 魏维
Original assignee: Hunan Communications Research Institute Co ltd
Current assignee: Hunan Communications Research Institute Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2020-12-25
Anticipated expiration: 2030-08-05

Abstract

A bridge anchor stress acoustic detection excitation device comprises a transmitting transducer and a receiving transducer which are oppositely arranged, wherein the transmitting end of the transmitting transducer is connected with a port connecting piece, the inner side of the port connecting piece is connected with the transmitting transducer, and a tip structure is arranged on the outer side of the port connecting piece; and the receiving end of receiving the transducer is connected with a built-up connection spare, the built-up connection spare includes terminal surface disk and arc rubber pad, the terminal surface disk inboard links to each other with receiving the transducer through threaded connection mode, and the outside is provided with circular blind groove to the shaping has in circular blind groove the arc rubber pad, the circular blind groove of arc rubber pad inboard laminating to have with the indent cambered surface that corresponds the anchor ring lateral wall and laminate mutually. The utility model discloses applicable in the detection of not unidimensional anchor ring to can effectively improve the accuracy of detecting the anchor ring.

Description

Bridge anchor stress acoustic detection excitation device

Technical Field

The utility model belongs to the ultrasonic detection field specifically is a bridge anchor is stress acoustics under and detects excitation device.

Background

The sound wave nondestructive testing technology is one of the main methods for nondestructive testing, and the method is more and more applied to the fields of roads, bridges, buildings, medical treatment and the like due to the advantages of light equipment, simplicity in operation, good use conditions and safety performance, high testing efficiency and the like. The transducer is a core component of an ultrasonic detection system, the rare earth giant magnetostrictive material is an intelligent material, and the material has the advantages of large magnetostrictive strain, high energy density, wide working frequency band, quick response, good reliability, high precision and the like, so that the material becomes an ideal material for manufacturing the transducer, and the piezoelectric ceramic has the advantages of high electroacoustic efficiency, high receiving sensitivity and the like, so the material is also an ideal transducer material. The bottom surface (the contact surface with the measured object) of the transducer is generally made into a plane, so that when the surface of the measured object is the plane, the contact surface can be more compact, the detection stability is improved, and the measurement precision is increased.

When the existing transducer is used for detecting the bridge anchor ring (the detected surface is a curved surface), the defects of unstable detection data, low detection precision and the like occur in actual detection due to the problems of small contact surface, easiness in sliding and the like of the existing transducer, and the size of the bridge anchor ring is large, so that more influence factors are added for detecting the bridge anchor ring by using the planar transducer, and the measurement precision is greatly reduced.

Disclosure of Invention

The utility model provides a technical problem lie in providing a bridge anchor is stress acoustics under and detects excitation device, and the device is applicable to the not stress acoustics detection excitation device of unidimensional anchor ring to solve the defect in the above-mentioned technical background.

The utility model provides a technical problem adopt following technical scheme to realize:

a bridge anchor stress acoustic detection excitation device comprises a transmitting transducer and a receiving transducer which are oppositely arranged, wherein the transmitting end of the transmitting transducer is connected with a port connecting piece, the inner side of the port connecting piece is connected with the transmitting transducer, and a tip structure is arranged on the outer side of the port connecting piece; and the receiving end of receiving the transducer is connected with a built-up connection spare, the built-up connection spare includes terminal surface disk and arc rubber pad, the terminal surface disk inboard links to each other with receiving the transducer through threaded connection mode, and the outside is provided with circular blind groove to the shaping has in circular blind groove the arc rubber pad, the circular blind groove of arc rubber pad inboard laminating to have with the indent cambered surface that corresponds the anchor ring lateral wall and laminate mutually.

As a further limitation, the port connector and the combined connector are detachable connectors, and the detachable connection modes between the port connector and the transmitting transducer and between the combined connector and the receiving transducer are one or a combination of threaded connection, clamping connection, bolting connection and pin connection.

As a further limitation, the arc-shaped rubber gasket is bonded with the end face circular sheet through grease.

By way of further limitation, the transmitting transducer is a super-magnetic transducer.

As a further limitation, the receiving transducer is a piezoelectric transducer.

Has the advantages that: the utility model discloses a bridge anchor is stress acoustics under and is detecting excitation device is carrying out bridge anchor stress acoustics and detecting time measuring, and the arc rubber pad has increased the contact surface with the anchor ring to make the contact surface laminating inseparabler, thereby improved and measured the accuracy. When the anchor rings with different sizes are detected, only the arc-shaped rubber pads with different curvature radiuses need to be replaced, and the transducer is prevented from being replaced, so that the detection efficiency is greatly improved, and the instrument cost is saved.

Drawings

Fig. 1 is a schematic view of the inspection assembly according to the preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of the transmitting transducer end assembly according to the preferred embodiment of the present invention.

Fig. 3 is a schematic diagram of the assembly of the receiving transducer end according to the preferred embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a port connector according to a preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of a composite connecting member according to a preferred embodiment of the present invention.

Wherein: 1. an arc-shaped rubber pad; 2. end face circular sheet; 3. a receiving transducer; 4. a transmitting transducer; 5. a port connector; 6. a spiral part at the upper end of the circular groove; 7. port connection upper end spiral portion.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 1-5, in the present embodiment, a super-magnetic transducer is used as a transmitting transducer 4, a piezoelectric transducer is used as a receiving transducer 3, and the present invention further includes a port connector 5 connected to the transmitting transducer 4 and a combined connector connected to the receiving transducer 3.

Transmitting transducer 4 connects port connecting piece 5, receiving transducer 3 connects built-up connection spare, this built-up connection spare includes

terminal surface disk

2, 2 one end of terminal surface disk is connected with receiving transducer 3, the other end is connected with arc rubber pad 1, and to arc rubber pad 1, can select the appropriate arc rubber pad of radius of curvature 1 according to not unidimensional anchor ring, each part has been installed in advance, then adopt spiral groove cooperation port connecting piece upper end spiral portion 7 with transmitting transducer 4 and port connecting piece 5 to be connected, because 5 port diameters of port connecting piece are less, consequently can be better with the anchor ring contact, can make the energy of transmitting transducer 4 output on the contact surface more even again.

And receive transducer 3 and terminal surface disk 2 and adopt spiral groove cooperation circular slot upper end spiral part 6 to be connected with receiving transducer 3, arc rubber pad 1 that blocks that the recess of terminal surface disk 2 can be fine, arc rubber pad 1 blocks in terminal surface disk 2 to fixed with butter, the radius of curvature of arc rubber pad 1 is unanimous with the radius of anchor ring, consequently both can guarantee that arc rubber pad 1 can be fine and the contact of anchor ring, can examine time measuring to the anchor ring of equidimension not again, only need change arc rubber pad 1 that the radius of curvature is suitable. The assembled transducer is placed on the anchor ring for testing.

The embodiment is applied to the acoustic detection of the stress under the bridge anchor, and the working process is as follows: when detecting, place transmitting transducer 4 and receiving transducer 3 in the both sides of anchor ring, generally place according to the mode of surveying, place according to the pattern as shown in fig. 1 promptly, the part that awaits measuring is located transmitting transducer 4 and transmitting transducer 3, selects the suitable arc rubber pad of radius of curvature 1 according to the anchor ring size, then opens stress acoustics and detects excitation device and detect, and the ultrasonic wave that transmitting transducer 4 sent is received by receiving transducer 3 behind the part that awaits measuring.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.

Claims

1. The acoustic detection excitation device for the stress under the bridge anchor is characterized by comprising a transmitting transducer and a receiving transducer which are oppositely arranged, wherein the transmitting end of the transmitting transducer is connected with a port connecting piece, the inner side of the port connecting piece is connected with the transmitting transducer, and a tip structure is arranged on the outer side of the port connecting piece; and the receiving end of receiving the transducer is connected with a built-up connection spare, the built-up connection spare includes terminal surface disk and arc rubber pad, the terminal surface disk inboard links to each other with receiving the transducer through threaded connection mode, and the outside is provided with circular blind groove to the shaping has in circular blind groove the arc rubber pad, the circular blind groove of arc rubber pad inboard laminating to have with the indent cambered surface that corresponds the anchor ring lateral wall and laminate mutually.

2. The bridge anchorage stress acoustic detection excitation device of claim 1, wherein the port connection piece and the combined connection piece are detachable connection pieces.

3. The acoustic detection and excitation device for the stress under the bridge anchor according to claim 2, wherein the detachable connection mode is one or a combination of a threaded connection, a clamping connection, a bolt connection and a pin connection.

4. The bridge anchorage stress acoustic detection excitation device of claim 1, wherein the arc-shaped rubber pad is bonded to the end face disc by grease.

5. The bridge anchorage stress acoustic detection excitation device of claim 1, wherein the transmitting transducer is a super-magnetic transducer.

6. The bridge anchorage stress acoustic detection excitation device of claim 1, wherein the receiving transducer is a piezoelectric transducer.