Ultrasonic transverse wave transducer for nondestructive testing of bolt axial force

Abstract

The utility model relates to the technical field of ultrasonic testing, and discloses an ultrasonic transverse wave transducer for bolt axial force nondestructive testing, which comprises a piezoelectric element, a protective structure is arranged outside the piezoelectric element and is used for protecting the transducer structure and preventing electromagnetic interference, cables are fixedly connected to the front and the rear of the left side of the piezoelectric element, and the cables are connected with the piezoelectric element. The left sides of the two cables are both fixedly connected with joints, the peripheries of the left sides of the two joints are both rotatably connected with movable blocks, the peripheries of the left sides of the two joints are both fixedly connected with shifting rods, the peripheries of the left sides of the two joints are both fixedly connected with pull rods, and the two pull rods are both fixedly connected with one ends of springs. According to the utility model, the shifting rod is shifted to drive the joint to rotate in the movable block, the limiting block is matched to enable the plurality of clamping jaws to be opened or tightened, the joint rotates to drive the pull rod to pull the spring, and the spring pushes the clamping jaws to be tightened when the shifting rod is loosened, so that a plug can be clamped and fixed, and quick assembly and disassembly of the joint are completed.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic detection, in particular to an ultrasonic shear wave transducer for non-destructive detection of bolt axial force. Background Technique

[0002] Ultrasonic shear wave transducers are widely used in the fields of industry, medicine, materials science, geological exploration, and aerospace. They can detect the internal conditions of materials, assist in medical imaging, and evaluate material properties. However, they face challenges in terms of stability, reliability, and detection accuracy in extreme environments, which promotes technological innovation;

[0003] An ultrasonic shear wave transducer consists of a piezoelectric element, a matching layer, a backing material, electrodes, a housing, and a cable. When an electrical signal is applied to the piezoelectric element through the cable and electrodes, the piezoelectric element deforms to generate mechanical vibration, thereby emitting shear waves into the surrounding medium. When the shear waves encounter the object to be measured and reflect back, the piezoelectric element converts the received mechanical vibration into an electrical signal, which is then transmitted through the cable to the subsequent processing equipment for analysis and processing. The matching layer is used to optimize the transmission of sound waves and reduce reflection losses. The backing material absorbs the backward-propagating sound waves to improve the detection resolution and sensitivity. The housing plays a role in protecting and fixing the internal components;

[0004] The existing cable connectors of ultrasonic shear wave transducers cannot be quickly installed and disassembled. In scenarios where the transducer needs to be frequently replaced and repaired, the time-consuming and laborious installation and disassembly will reduce work efficiency and increase the downtime of the equipment, thus affecting the progress of the production and detection processes. Therefore, an ultrasonic shear wave transducer for non-destructive detection of bolt axial force is proposed to solve the above problems. Summary of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides an ultrasonic shear wave transducer for non-destructive detection of bolt axial force, aiming to improve the problem that the cable connector in the prior art cannot be quickly installed and disassembled, resulting in reduced work efficiency.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An ultrasonic shear wave transducer for non-destructive detection of bolt axial force, comprising a piezoelectric element, with a protective structure arranged outside the piezoelectric element, the protective structure being used to protect the transducer structure and prevent electromagnetic interference. Both the front and rear of the left side of the piezoelectric element are fixedly connected with cables, and the left sides of both cables are fixedly connected with connectors. The outer circumferences of the left sides of both connectors are rotatably connected with movable blocks, the outer circumferences of the left sides of both connectors are fixedly connected with lever rods, the outer circumferences of the left sides of both connectors are fixedly connected with pull rods, one end of a spring is fixedly connected to both pull rods, multiple clamping jaws are rotatably connected to the left sides of both connectors, anti-sliding blocks are fixedly connected to the front ends of multiple clamping jaws, limit blocks are fixedly connected to the ends of multiple clamping jaws, positioning rods are fixedly connected to the outer circumferences of both movable blocks, limit rods are fixedly connected to the interiors of both movable blocks, and the other ends of both springs are fixedly connected to both limit rods;

[0008] As a further description of the above technical solution:

[0009] The protective structure includes a lining layer sleeved on the outer circumference of the piezoelectric element, and a protective layer is sleeved on the outer circumference of the lining layer;

[0010] As a further description of the above technical solution:

[0011] Limit grooves one are opened on the outsides of both movable blocks, and both lever rods are slidably connected inside both limit grooves one;

[0012] As a further description of the above technical solution:

[0013] Limit grooves two are opened on the outsides of both movable blocks, and both pull rods are slidably connected inside both limit grooves two;

[0014] As a further description of the above technical solution:

[0015] Multiple limit grooves three are opened on the left sides of both movable blocks, and multiple limit blocks are slidably connected inside multiple limit grooves three;

[0016] As a further description of the above technical solution:

[0017] The lining layer is made of polyphenylene sulfide material;

[0018] As a further description of the above technical solution:

[0019] The protective layer is made of titanium alloy material;

[0020] As a further description of the above technical solution:

[0021] The plurality of anti-sliding blocks are made of nitrile rubber, and the two limiting rods are fixedly connected inside the two limiting grooves.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the joint is driven to rotate inside the movable block by toggling the lever, and the plurality of clamping claws are opened in cooperation with the limit block, so that the instrument plug can be inserted into the joint, and the rotation of the joint drives the pull rod to pull the spring. When the lever is released, the spring pulls the pull rod and drives the joint to rotate and reset, so that the plurality of clamping claws are tightened again, and the rapid splicing of the joint is completed.

[0024] 2. In the present invention, the protective layer is used to protect the outside of the piezoelectric element to resist external collisions and scratches, and the lining layer is used to provide electromagnetic shielding to ensure that the transducer can work normally and stably. The two-layer structure cooperates to jointly complete the protection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of an ultrasonic shear wave transducer for non-destructive detection of bolt axial force proposed by the utility model;

[0026] Figure 2 This is a structural schematic diagram of a joint of an ultrasonic shear wave transducer for non-destructive testing of bolt axial force proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a clamping jaw of an ultrasonic shear wave transducer for non-destructive testing of bolt axial force proposed by the utility model;

[0028] Figure 4 The utility model provides a schematic structural diagram of a piezoelectric element of an ultrasonic shear wave transducer for nondestructive testing of bolt axial force.

[0029] Legend:

[0030] 1. Piezoelectric element; 2. Cable; 3. Connector; 4. Limiting slot 1; 5. Positioning rod; 6. Push rod; 7. Movable block; 8. Limiting slot 2; 9. Pull rod; 10. Limiting slot 3; 11. Clamping claw; 12. Anti-sliding block; 13. Limiting block; 14. Limiting rod; 15. Spring; 16. Lining layer; 17. Protective layer. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Referring to Figures 1-3 ,an embodiment provided by the present utility model is as follows: an ultrasonic shear wave transducer for non-destructive detection of bolt axial force, including a piezoelectric element 1 for ultrasonic detection. A protective structure is arranged outside the piezoelectric element 1 to protect the transducer structure and prevent electromagnetic interference. Cables 2 are fixedly connected to the front and rear sides of the left side of the piezoelectric element 1, and the two cables 2 are used for signal transmission. Connectors 3 are fixedly connected to the left sides of the two cables 2, and the two connectors 3 are used to connect the two cables 2 and the piezoelectric element 1 to the detection instrument. Movable blocks 7 are rotatably connected to the outer peripheries of the left sides of the two connectors 3, and the two movable blocks 7 are used to drive the quick installation structure to work. Levers 6 are fixedly connected to the outer peripheries of the left sides of the two connectors 3, and the levers 6 are used to drive the quick splicing structure to work. Pull rods 9 are fixedly connected to the outer peripheries of the left sides of the two connectors 3, and one ends of two springs 15 are fixedly connected to the two pull rods 9 respectively. The two pull rods 9 respectively pull the two springs 15 to reset the two pull rods 9 and drive the quick installation structure to reset. Multiple clamping jaws 11 are rotatably connected to the left sides of the two connectors 3, and the multiple clamping jaws 11 are used to clamp and fix the plugs inserted into the connectors 3. Anti-slip blocks 12 are fixedly connected to the front ends of the multiple clamping jaws 11, and the multiple anti-slip blocks 12 are used to increase friction and prevent the plugs from falling out of the two connectors 3. Limit blocks 13 are fixedly connected to the ends of the multiple clamping jaws 11, and the multiple limit blocks 13 are used to drive the multiple clamping jaws 11 to rotate and open. Positioning rods 5 are fixedly connected to the outer peripheries of the two movable blocks 7, and limiting rods 14 are fixedly connected to the interiors of the two movable blocks 7. The two limiting rods 14 are fixedly connected to the other ends of the two springs 15, and the two limiting rods 14 are used to fix the springs 15 to make the springs 15 pull the reset structure. Limiting grooves 14 are opened outside the two movable blocks 7, and the two levers 6 are slidably connected inside the two limiting grooves 14. The two limiting grooves 14 are used to limit and guide the movement trajectories of the two levers 6. Limiting grooves 8 are opened outside the two movable blocks 7, and the two pull rods 9 are slidably connected inside the two limiting grooves 8. The two limiting grooves 8 are used to guide and limit the movement trajectories of the two pull rods 9 to prevent them from over-pulling the springs 15 and damaging the structure. Multiple limiting grooves 10 are opened on the left sides of the two movable blocks 7, and the multiple limit blocks 13 are slidably connected inside the multiple limiting grooves 10. The multiple limit blocks 13 sliding inside the multiple limiting grooves 10 can cooperate with the multiple clamping jaws 11 during sliding, so that the multiple clamping jaws 11 can rotate and open or tighten. The multiple anti-slip blocks 12 are made of nitrile rubber material, and the nitrile rubber material has the characteristic of wear resistance. The two limiting rods 14 are fixedly connected inside the two limiting grooves 8.

[0033] Referring to Figure 1 and Figure 4, the protective structure includes a lining layer 16. The lining layer 16 is used to provide electrical insulation and electromagnetic shielding to ensure the normal operation and stable performance of the transducer. The lining layer 16 is sleeved on the outer periphery of the piezoelectric element 1. A protective layer 17 is sleeved on the outer periphery of the lining layer 16. The protective layer 17 is used to withstand external physical impacts, chemical erosions, and provide overall structural support to protect the internal sensitive components of the transducer from direct damage. The lining layer 16 is made of polyphenylene sulfide material. The polyphenylene sulfide material has good high-temperature resistance, chemical stability, and electrical insulation, and can effectively isolate the mutual interference between the internal components and the external electromagnetic field. The protective layer 17 is made of titanium alloy material. The titanium alloy material has high strength and wear resistance, and can provide good mechanical protection for the transducer in a complex detection environment and resist external bumps and frictions.

[0034] Working principle: Toggle the lever 6, drive the joint 3 to rotate by cooperating with the positioning rod 5. The rotation of the joint 3 can drive the rotation of multiple clamping jaws 11. The multiple limiting blocks 13 fixed at the ends of the multiple clamping jaws 11 slide inside the third limiting groove 10, which can drive the multiple clamping jaws 11 to open. The rotation of the joint 3 can drive the pull rod 9 to move and pull the spring 15. When the lever 6 is released, the spring 15 pulls the pull rod 9 and resets it, and drives the joint 3 to reset to make the multiple clamping jaws 11 tighten again, completing the fixation of the plug and the joint 3. The protective layer 17 of the piezoelectric element 1 is made of titanium alloy material. The titanium alloy material has high strength and wear resistance, and can provide good mechanical protection for the transducer in a complex detection environment and resist external bumps and frictions. The lining layer 16 is made of polyphenylene sulfide material. The polyphenylene sulfide material has good high-temperature resistance, chemical stability, and electrical insulation, and can effectively isolate the mutual interference between the internal components and the external electromagnetic field.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultrasonic shear wave transducer for nondestructive testing of bolt axial force, comprising a piezoelectric element (1), characterized in that: The piezoelectric element (1) is provided with a protective structure on the outside, the protective structure is used to protect the transducer structure and prevent electromagnetic interference, the piezoelectric element (1) is fixedly connected to cables (2) at the front and rear of the left side, the two cables (2) are fixedly connected to joints (3) on the left side, the two joints (3) are rotatably connected to movable blocks (7) on the left peripheries, the two joints (3) are fixedly connected to levers (6) on the left peripheries, the two joints (3) are fixedly connected to pull rods (9) on the left peripheries, and the two pull rods (9) are fixedly connected to the left peripheries. One end of each of the two movable blocks (7) is fixedly connected to a spring (15); the left sides of the two joints (3) are rotatably connected to a plurality of clamping claws (11); the front ends of the plurality of clamping claws (11) are fixedly connected to an anti-sliding block (12); the ends of the plurality of clamping claws (11) are fixedly connected to a limiting block (13); the outer peripheries of the two movable blocks (7) are fixedly connected to a positioning rod (5); the interiors of the two movable blocks (7) are fixedly connected to a limiting rod (14); and the two limiting rods (14) are fixedly connected to the other ends of the two springs (15).

2. The ultrasonic shear wave transducer for nondestructive testing of bolt axial force according to claim 1, characterized in that: The protective structure comprises an inner lining layer (16), wherein the inner lining layer (16) is sleeved on the outer periphery of the piezoelectric element (1), and a protective layer (17) is sleeved on the outer periphery of the inner lining layer (16).

3. The ultrasonic shear wave transducer for nondestructive testing of bolt axial force according to claim 1, characterized in that: The two movable blocks (7) are both provided with a limiting groove (4) on the outside, and the two shifting rods (6) are both slidably connected inside the two limiting grooves (4).

4. The ultrasonic shear wave transducer for nondestructive testing of bolt axial force according to claim 1, characterized in that: The two movable blocks (7) are both provided with second limiting grooves (8) on the outside, and the two pull rods (9) are both slidably connected inside the two second limiting grooves (8).

5. The ultrasonic shear wave transducer for nondestructive testing of bolt axial force according to claim 1, characterized in that: A plurality of limiting grooves (10) are provided on the left sides of the two movable blocks (7), and the plurality of limiting blocks (13) are slidably connected inside the plurality of limiting grooves (10).

6. The ultrasonic shear wave transducer for nondestructive testing of bolt axial force according to claim 2, characterized in that: The inner lining layer (16) is made of polyphenylene sulfide material.

7. The ultrasonic shear wave transducer for nondestructive testing of bolt axial force according to claim 2, characterized in that: The protective layer (17) is made of titanium alloy.

8. The ultrasonic shear wave transducer for nondestructive testing of bolt axial force according to claim 4, characterized in that: The plurality of anti-sliding blocks (12) are made of nitrile rubber material, and the two limiting rods (14) are fixedly connected inside the two limiting grooves (8).

Images