CN216524478U - A Torque Detection Device Based on Magnetostrictive Materials - Google Patents

Abstract

The utility model discloses a torque detection device based on magnetostrictive materials, comprising a base, a left support frame, a right support frame, a shaft to be measured, a suspension rod, a permanent magnet, a magnetostrictive material sheet, an induction coil and a chuck, The two ends of the base are respectively provided with a left support frame and a right support frame, the left support frame is fixed with a chuck for clamping the fixed end of the shaft to be measured, and the right support frame is provided with a chuck for clamping the shaft to be measured. The suspension rod is radially fixed and inserted into the free end of the shaft to be measured, and the magnetostrictive material sheet is fixed on the shaft of the shaft to be measured by two permanent magnets. Induction coils are wound around the sheet of stretchable material. The torque detection device based on magnetostrictive material can measure the torque of the shaft to be measured, and the device of the utility model has the advantages of convenient disassembly and installation of the detection device and the shaft to be measured.

Description

A Torque Detection Device Based on Magnetostrictive Materials

technical field

The utility model relates to the technical field of sensor detection, in particular to a torque detection device based on magnetostrictive materials.

Background technique

Torque detection device is a detection tool for sensing torsional torque on various rotating or non-rotating mechanical parts, mainly divided into static and dynamic categories. The principle of torque detection/sensing device is to convert the physical change of torque into accurate electrical signals. . The torque detection/sensing device can be used in the manufacture of viscometers and electric torque wrenches, and has the advantages of high precision, good reliability and long service life.

However, the existing static torque detection device still has the problem that it is difficult to assemble and disassemble between the detection device and the shaft to be measured.

Utility model content

The purpose of the utility model is to provide a torque detection device based on magnetostrictive material, which aims to solve the problem of difficulty in disassembly and assembly between the torque detection device and the shaft to be measured.

In order to achieve the above purpose, the utility model provides a torque detection device based on magnetostrictive materials, including a base, a left support frame, a right support frame, a shaft to be measured, a suspension rod, a permanent magnet, a magnetostrictive material sheet, Induction coil and chuck, the two ends of the base are respectively provided with a left support frame and a right support frame, the left support frame is fixed with a chuck for clamping the fixed end of the shaft to be measured, and the right support frame is provided with a Clamp the shaft hole through which the shaft to be measured axially passes, the suspension rod is radially fixed and inserted in the free end of the shaft to be measured, and the magnetostrictive material sheet is fixed on the shaft of the shaft to be measured by two permanent magnets. On the shaft body, the magnetostrictive material sheet is wound with an induction coil.

Preferably, the left support frame and the base are integral structures.

Preferably, the permanent magnet and the magnetostrictive material sheet and between the permanent magnet and the shaft to be measured are respectively connected by strain glue.

Preferably, the bottom of the permanent magnet is provided with an arc-shaped groove matching the radian of the axial surface of the shaft to be measured.

Preferably, the magnetostrictive material sheet is a Galfenol alloy sheet.

Compared with the prior art, the utility model has the beneficial effects as follows: by fixing the magnetostrictive material sheet and the two permanent magnets on the shaft to be measured, and then suspending weights of different masses on the suspension rods Then, an induction coil is connected to the magnetostrictive material sheet, so as to measure the torque of the shaft to be measured, which solves the problems of complicated disassembly and difficult installation of the shaft to be measured.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

Fig. 1 is the structural representation of the preferred embodiment of the present utility model;

2 is a schematic diagram of a permanent magnet and a magnetostrictive material sheet in a preferred embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention.

Embodiment 1: Please refer to FIG. 1 and FIG. 2, the present utility model provides a torque detection device based on magnetostrictive materials, including a base 1, a left support frame 2, a right support frame 3, an axis to be measured 4, and a suspension rod. 5, permanent magnet 6, magnetostrictive material sheet 7, induction coil 8 and chuck 9, the two ends of the base 1 are respectively provided with a left support frame 2 and a right support frame 3, and the left support frame 2 is fixed on the There is a chuck 9 for clamping the fixed end of the shaft 4 to be measured, the right support frame 3 is provided with a shaft hole for clamping the shaft 4 to be measured axially through, and the suspension rod 5 is radially fixed and inserted in the At the free end of the shaft 4 to be measured, the magnetostrictive material sheet 7 is fixed on the shaft of the shaft to be measured 4 through two permanent magnets 6 , and an induction coil 8 is wound on the magnetostrictive material sheet 7 .

Further, the left support frame 2 and the base 1 have an integral structure.

Further, the permanent magnet 6 and the magnetostrictive material sheet 7 and between the permanent magnet 6 and the shaft to be measured 4 are respectively connected by strain glue.

Further, the bottom of the permanent magnet 6 is provided with an arc-shaped groove matching the radian of the axial surface of the shaft 4 to be measured.

Further, the magnetostrictive material sheet 7 is a Galfenol alloy sheet.

In this embodiment, when it is necessary to measure the shaft 4 to be measured, first, one end of the shaft 4 to be measured is fixed on the chuck 9 through the shaft hole of the right support frame 3, and then the magnetostrictive material sheet 7 and the The two permanent magnets 6 are fixed on the shaft 4 to be measured, and then weights or weights of different masses are suspended on the suspension rod 5 , and then the induction coil 8 is connected to the magnetostrictive material sheet 7 .

Further, when the suspension rod 5 is subjected to a torsional external force (heavy objects or weights are hung on one side), the shaft 4 to be measured will be subjected to a torque, and the magnetostrictive material sheet 7 will be deformed by the torsional force. At this time, the magnetic field around the magnetostrictive material sheet 7 will change, and the induction coil 8 on the magnetostrictive material sheet 7 can detect the change of the magnetic field and convert it into an electrical signal output. Torque, the induction coil 8 can output different electrical signals correspondingly, so as to realize the measurement of torque.

Further, when it is necessary to disassemble, first separate the two permanent magnets 6 from the shaft 4 to be measured, take out the suspension rod 5, then loosen the chuck 9, and take out the shaft, which solves the problem between the detection device and the shaft 4 to be measured. Complex disassembly and difficult installation.

In this embodiment, the Galfenol alloy flakes have high strength, good toughness, low brittleness, good ductility and temperature characteristics, low saturation magnetization field and high magnetostrictive strain, so that the Torque measurement is more accurate.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the technology to understand the content of the present invention and implement accordingly, and cannot limit the protection scope of the present invention with this. All changes, modifications, substitutions, combinations or simplifications made according to the spirit and principle of the technical solutions of the present invention should be equivalent replacement methods, as long as they meet the purpose of the present invention and do not deviate from the technical principles of the present invention. and ideas, all belong to the protection scope of the present invention.

Claims (5)

1. A torque detection device based on a magnetostrictive material, characterized in that it comprises a base (1), a left support frame (2), a right support frame (3), a shaft to be measured (4), a suspension rod (5) ), a permanent magnet (6), a magnetostrictive material sheet (7), an induction coil (8) and a chuck (9), the two ends of the base (1) are respectively provided with a left support frame (2) and a right support frame (3), a chuck (9) for clamping the fixed end of the shaft to be measured (4) is fixed on the left support frame (2), and a chuck (9) for clamping the shaft to be measured (4) is fixed on the right support frame (3). 4) A shaft hole passing through in the axial direction, the suspension rod (5) is radially fixed and inserted in the free end of the shaft (4) to be measured, and the magnetostrictive material sheet (7) passes through two permanent magnets (6) It is fixed on the shaft body of the shaft to be measured (4), and the magnetostrictive material sheet (7) is wound with an induction coil (8). 2 . The torque detection device based on magnetostrictive material according to claim 1 , wherein the left support frame ( 2 ) and the base ( 1 ) are integral structures. 3 . 3. A magnetostrictive material-based torque detection device as claimed in claim 1, characterized in that, between the permanent magnet (6) and the magnetostrictive material sheet (7) and between the permanent magnet (6) and the to-be-measured The shafts (4) are respectively bonded and connected by strain glue. 4. The magnetostrictive material-based torque detection device according to claim 1, wherein the bottom of the permanent magnet (6) is provided with an arc-shaped groove matching the radian of the axial surface of the shaft (4) to be measured. 5. The magnetostrictive material-based torque detection device according to claim 1, wherein the magnetostrictive material sheet (7) is a Galfenol alloy sheet.

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