Bonding device for driving vibration element of magnetostrictive transducer

Abstract

The utility model belongs to the technical field of underwater acoustic transducer production, and discloses a bonding device of a magnetostrictive transducer driving vibration element, which comprises a bottom plate, a top plate and two semi-cylindrical clamps symmetrically mounted on the bottom plate, and four double-end support rods distributed between the bottom plate and the top plate, two limiting grooves are symmetrically formed in each semi-cylindrical clamp and used for installing a driving vibration element, a top pressing plate is arranged between the driving vibration element and the top plate, four stress application nuts are evenly distributed in the middle of the top plate, correspond to the driving vibration elements one to one and are concentric, and the stress application nuts are in threaded connection with the top plate. And the screw is used for screwing and applying axial pressing force to the driving vibration element. According to the bonding device for the driving vibration element of the magnetostrictive transducer, the process of bonding operation of the driving vibration element is simplified, assembling of a clamp can be achieved through fastening of conventional screws, complexity of manual operation is reduced, operation feasibility is improved, bonding precision is improved, bonding efficiency is improved, and prestress and stress uniformity are accurately controlled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the production technical field of underwater acoustic transducer, especially relates to a kind of sticking device of magnetostrictive transducer drive vibration element. BACKGROUND

[0002] In order to improve the application performance of iron gallium rod and permanent magnet in magnetostrictive transducer, the two are usually bonded. The drive vibration element composed of iron gallium rod and permanent magnet, as the core component of magnetostrictive transducer, is usually responsible for the emission and reception of sound waves, and good assembly precision is crucial to the performance of magnetostrictive transducer. Among them, iron gallium rod, as a magnetostrictive material, forms a closed magnetic circuit with permanent magnet, and by accurately arranging permanent magnet, optimizing magnetic circuit design and reducing magnetic field leakage, the magnetic energy utilization efficiency can be improved. The bonding quality of the drive vibration element composed of iron gallium rod and permanent magnet directly affects the acoustic performance of the transducer, including frequency response and signal strength. Therefore, ensuring the consistency of the bonding of iron gallium rod and permanent magnet and accurately controlling the bonding position and pressure of the drive vibration element can not only improve the performance and reliability of the magnetostrictive transducer, but also has important significance for promoting the development of underwater acoustic technology.

[0003] The Chinese patent with publication number CN114833749A discloses a transducer assembly fixing device, which includes a base, support rods, an upper cover plate, and fixing nuts. The upper cover plate is parallel to the base and located on the top of the base. The support rods are arranged in multiple numbers to fixedly connect the edges of the upper cover plate and the base. The fixing nuts correspond to the support rods one by one to fixedly connect the upper cover plate and the support rods. A mounting hole is arranged in the middle of the upper cover plate to fix the transducer through a bolt. The bolt is adjusted by a rotating torque wrench to control the pressing force. A jack mounting hole is arranged in the middle of the upper surface of the base to fix a lifting device, solving the problem of uneven stress of the transducer in the prior art and enabling accurate control of the prestress of the transducer.

[0004] However, the above-mentioned patent has a complex structure, increasing the manufacturing and maintenance costs. The hydraulic system and pressure gauge that need to be accurately controlled may increase the operation complexity of the device, requiring the operator to have certain skills and knowledge. The hydraulic system and pressure gauge need to be regularly maintained and calibrated to ensure accurate control of the prestress, increasing the long-term operation maintenance cost and workload, and if not properly maintained, it may affect the performance of the device and the assembly quality of the transducer. The whole device is relatively bulky, especially with the inclusion of a jack and a hydraulic system, limiting its use in space-limited environments and increasing the difficulty of transportation and storage. Therefore, a new device needs to be designed. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose lies in providing a kind of adhesion device of magnetostrictive transducer drive vibration element, to solve the problem presented in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of adhesion device of magnetostrictive transducer drive vibration element, including bottom plate and top plate, four double-end support rods are uniformly distributed between the bottom plate and the top plate, further including the two half-cylinder clamps symmetrically installed on the bottom plate, two limit recesses are symmetrically arranged in each half-cylinder clamp, for installing drive vibration element, top pressing plate is arranged between the drive vibration element and the top plate, four force nuts are uniformly distributed in the middle of the top plate, the force nut is one-to-one corresponding with the drive vibration element, and concentric, the force nut is connected with the top plate by screw thread, for tightening to drive vibration element axial compression force.

[0008] Further: the double-end support rod two ends are provided with limit boss respectively, for limiting total height, the double-end support rod two ends are bolted with the bottom plate and the top plate respectively.

[0009] Further: the opposite surface of the bottom plate and the top plate is provided with parallelism requirement, guaranteeing relative size accuracy.

[0010] Further: the half-cylinder clamp includes L-shaped front pressing plate and rear pressing plate, the limit recess is arranged in the middle of the L-shaped front pressing plate and the rear pressing plate, two groups of semicircular recesses consistent with the outer diameter of the drive vibration element are used, for limiting the circumferential size of the drive vibration element, the limit recess height is less than the total height of the drive vibration element, the gap for adhesive outflow is arranged between the opposite surface of the L-shaped front pressing plate and the rear pressing plate.

[0011] Further: the L-shaped front pressing plate is provided with perpendicularity requirement, the L-shaped front pressing plate is bolted with the bottom plate, and the rear pressing plate is bolted with the L-shaped front pressing plate.

[0012] Further: the top pressing plate upper and lower surfaces are provided with same surface feature and parallelism requirement, improve the uniformity of stress.

[0013] Further: the force nut top end contains outer hexagonal structure and inner hexagonal structure simultaneously, bottom end is provided with smooth round table, the force nut is connected with the top plate by fine thread, it is convenient for torque wrench to tighten the force nut fixed, and it is fixed by the smooth round table to press down the top pressing plate stably. Torque wrench of setting value is used to fix force nut, to ensure the consistency of drive vibration.

[0014] Compared with prior art, the beneficial effects are:

[0015] 1. Improve operational feasibility: Simplify the process of bonding operation of the drive vibration element, the assembly of the clamp can be realized by conventional screw fastening, reduce the complexity of manual operation. Make the operation more simple and convenient, through the standard assembly and steps, even if the non-professional personnel can also assemble according to the specified process. In addition, the design of the device allows quick adjustment and replacement of parts, providing a certain flexibility to adapt to different specifications of drive vibration element or different assembly requirements;

[0016] 2. Improve bonding accuracy: Through the design of the circumferential limiting clamp, the accurate positioning of the iron gallium rod and the permanent magnet in the pretreatment process is ensured, and the fastening nut is used to apply a fixed value of pressing force, which improves the bonding outer diameter accuracy and axial consistency;

[0017] 3. Improve bonding efficiency: The standard bonding process and accurate assembly positioning help to improve production efficiency, and one to four groups of drive vibration elements can be bonded at a time according to the use demand, so that the assembly process is more efficient, and the time and resource consumption in production is reduced;

[0018] 4. Precise control of prestress: The pressing force of the bolt is adjusted by the rotary torque wrench, so as to realize the precise control of the prestress of the transducer. It is very important to ensure the stability and efficiency of the transducer in the working process, which can effectively avoid the performance decline or equipment damage caused by excessive or insufficient prestress;

[0019] 5. Stress uniformity: The design of the device makes the stress of the drive vibration element more uniform during the assembly process, which is mainly realized by the cooperation of the bottom plate, double-headed support rod, top plate and force nut. They together ensure that the drive vibration element is subjected to balanced pressure in each axial direction during bonding assembly. Uniform stress helps to improve the electromechanical conversion efficiency of the transducer, reduce energy loss, and prolong the service life of the transducer. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the bonding device of the magnetostrictive transducer drive vibration element of the utility model;

[0021] Figure 2 is a force nut schematic view of the bonding device of the magnetostrictive transducer drive vibration element of the utility model;

[0022] Figure 3 is a drive vibration element structure schematic view of the bonding device of the magnetostrictive transducer drive vibration element of the utility model;

[0023] Figure 4 is a half-cylinder clamp schematic view of the bonding device of the magnetostrictive transducer drive vibration element of the utility model.

[0024] In the drawing marks: 1, bottom plate; 2, double-end support rod; 3, top plate; 4, top pressing plate; 5, force nut; 6, drive vibration element; 6-1, short iron gall; 6-2, long iron gall; 6-3, permanent magnet; 7, semicylindrical clamp; 7-1, L-shaped front pressing plate; 7-2, rear pressing plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Please refer to Figures 1-4 A kind of adhesion device of magnetostrictive transducer drive vibration element 6, including bottom plate 1 and top plate 3, four double-end support rods 2 are uniformly distributed in four corners between bottom plate 1 and top plate 3, further including two semicylindrical clamps 7 symmetrically installed on bottom plate 1, two limiting grooves are symmetrically arranged in each semicylindrical clamp 7, for installing drive vibration element 6, top pressing plate 4 is arranged between drive vibration element 6 and top plate 3, four force nuts 5 are uniformly distributed in top plate 3, force nut 5 corresponds to drive vibration element 6 one to one, and concentric, force nut 5 is connected with top plate 3 by screw thread, for screwing to drive vibration element 6 and apply axial compression force.

[0027] Further: double-end support rod 2 two ends are provided with limiting boss respectively, for limiting total height, double-end support rod 2 two ends are bolted with bottom plate 1 and top plate 3 respectively;The opposite surface of bottom plate 1 and top plate 3 is provided with parallelism requirement, guaranteeing relative size accuracy;Semicylindrical clamp 7 includes L-shaped front pressing plate 7-1 and rear pressing plate 7-2, limiting groove is arranged in the middle of L-shaped front pressing plate 7-1 and rear pressing plate 7-2, two groups of semicircular grooves consistent with the outer diameter of drive vibration element 6 are used to limit the circumferential dimension of drive vibration element 6, the height of limiting groove is less than the total height of drive vibration element 6, and a gap for adhesive outflow is arranged between the opposite surfaces of L-shaped front pressing plate 7-1 and rear pressing plate 7-2;L-shaped front pressing plate 7-1 is provided with perpendicularity requirement, and L-shaped front pressing plate 7-1 is bolted with bottom plate 1, and rear pressing plate 7-2 is bolted with L-shaped front pressing plate 7-1;The upper and lower surfaces of top pressing plate 4 are provided with same surface features and parallelism requirement, to improve the uniformity of stress;The top end of force nut 5 simultaneously includes outer hexagonal structure and inner hexagonal structure, and the bottom end is provided with smooth circular table, and force nut 5 is connected with top plate 3 by fine thread, to facilitate the tightening of force nut 5 by torque wrench, and to stably press down top pressing plate 4 through smooth circular table.

[0028] Working principle: the horizontal plane of the L-shaped front pressing plate 7-1 of the two groups of semi-cylindrical clamps 7 is fixed on the bottom plate 1 respectively, the bottom plate 1 and the top plate 3 are connected through the limiting boss of the double-end supporting rod 2, and the short iron gall 6-1, the long iron gall 6-2 and the contact surface of the permanent magnet 6-3 are cleaned and coated with appropriate amount of epoxy resin, and the magnetic poles of the two permanent magnets 6-3 are confirmed to be consistent in direction, and the two are preliminarily combined into the driving vibration element 6, then the four groups of driving vibration elements 6 are contacted with the limiting recesses of the L-shaped front pressing plate 7-1 and the rear pressing plate 7-2, the vertical surface of the L-shaped front pressing plate 7-1 is fixedly connected with the vertical surface of the rear pressing plate 7-2 through bolts, the driving vibration element 6 is clamped, the consistency of the circumferential dimension of the driving vibration element 6 is realized, the top pressing plate 4 is placed on the upper surface of the four groups of driving vibration elements 6, then the four force nuts 5 are screwed through the top plate 3, the smooth boss of the four force nuts 5 pushes the top pressing plate 4, then a conventional torque wrench is used to set a fixed value, the outer hexagonal structure of the force nut 5 is fastened, the force nut 5 transmits the pressing force to the driving vibration element 6 through the top pressing plate 4, and the adhesive force is formed.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bonding device for driving a magnetostrictive transducer vibration element, comprising a bottom plate (1) and a top plate (3), four double-end support rods (2) being evenly distributed at four corners between the bottom plate (1) and the top plate (3), characterized in that: Also include the bottom plate (1) on the symmetry installed two half-cylinder clamp (7), each of the half-cylinder clamp (7) is symmetrically provided with two limiting recess, for installing drive vibration element (6), the drive vibration element (6) and the top plate (3) between the setting top pressure plate (4), the top plate (3) in the middle is uniformly distributed with four force nuts (5), the force nut (5) and the drive vibration element (6) one-to-one correspondence, and concentric, the force nut (5) and the top plate (3) are threadedly connected, for tightening to the drive vibration element (6) exert axial compression force.

2. The bonding apparatus for driving a magnetostrictive transducer according to claim 1, wherein: The double-end support rod (2) is provided with a limiting boss at both ends, for limiting the total height, the double-end support rod (2) is bolted with the bottom plate (1) and the top plate (3) at both ends.

3. The bonding apparatus for driving a magnetostrictive transducer according to claim 1, wherein: The opposite surfaces of the bottom plate (1) and the top plate (3) are provided with parallelism requirements.

4. The bonding apparatus for driving a magnetostrictive transducer according to claim 1, wherein: The half-cylinder clamp (7) includes L-shaped front pressure plate (7-1) and rear pressure plate (7-2), the limiting recess is arranged in the middle of the L-shaped front pressure plate (7-1) and the rear pressure plate (7-2), two groups of semicircular grooves with the same outer diameter as the drive vibration element (6) are used to limit the circumferential size of the drive vibration element (6), the limiting recess height is less than the total height of the drive vibration element (6), the L-shaped front pressure plate (7-1) and the rear pressure plate (7-2) are provided with a gap between the opposite surfaces for adhesive outflow.

5. A bonding device for driving a magnetostrictive transducer according to claim 4, wherein: The L-shaped front pressure plate (7-1) is provided with perpendicularity requirements, the L-shaped front pressure plate (7-1) is bolted with the bottom plate (1), and the rear pressure plate (7-2) is bolted with the L-shaped front pressure plate (7-1).

6. The bonding apparatus for driving a magnetostrictive transducer according to claim 1, wherein: The top and bottom surfaces of the top pressure plate (4) are provided with the same surface features and parallelism requirements.

7. The bonding apparatus for driving a magnetostrictive transducer according to claim 1, wherein: The top end of the force nut (5) comprises an outer hexagonal structure and an inner hexagonal structure, and the bottom end is provided with a smooth circular table, the force nut (5) is connected with the top plate (3) by fine thread; a torque wrench with a fixed value is used to fix the force nut (5), so as to ensure the consistency of the force of the drive vibrator.

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