CN205539415U - Magnetic declination measurement device - Google Patents

Abstract

The utility model provides a magnetic declination measuring device. The magnetic declination measuring device includes a support frame, a measuring platform, a magnetic field generating device and a measuring fixture, and the measuring fixture includes a base with an accommodation space, two movable splints erected in the accommodation space and arranged oppositely, and connecting two described The elastic part of the movable splint, the base includes two first frames of hollow structure, two second frames respectively connected with the two first frames, and a bottom frame connected with the first frame and the second frame at the same time and two sliding grooves set on opposite sides of the two first frames, the two first frames, the two second frames and the bottom frame jointly enclose the receiving space, and the movable splint is fixed on the two and sliding along the sliding groove, the elastic member is fixed in the first frame and connected to two ends of the movable splint respectively. Compared with related technologies, the magnetic declination measuring device of the present invention is simple to operate and firmly clamped.

Description

Magnetic Declination Measuring Device

technical field

The utility model relates to the field of magnetic material performance testing, in particular to a magnetic declination measuring device.

Background technique

The application of permanent magnet materials is very common, ranging from children's toys, micro motors, and communication equipment, to electric vehicles, artificial satellites, and maglev trains. Permanent magnets can be seen everywhere from every family, office, industry, agriculture, and medicine. Products for magnetic applications. During the application of permanent magnet materials, especially in high-tech industries, it is necessary to accurately measure the magnetic declination of permanent magnet materials. Therefore, it is very important to design a simple, fast and accurate magnetic declination measurement device for the wide application of permanent magnet materials.

In the related art, the magnetic declination measurement device is usually composed of a magnetic field generator, a fluxmeter, a measuring table and a measuring fixture. The measuring fixture with the permanent magnet to be tested is placed on the measuring table and moves in the magnetic field. The device and the fluxmeter measure the magnetic declination of the permanent magnet to be tested. However, the structure of the measuring jig in the magnetic declination measuring device of the existing structure is unreasonable. When the operator places the permanent magnet on the measuring jig, the permanent magnet needs to be clamped in the measuring jig by tightening the fixing nut. The problem of instability and damage to the permanent magnet leads to poor stability during the measurement process and low measurement efficiency.

Therefore, it is necessary to provide a new magnetic declination measuring device to solve the above problems.

Utility model content

The technical problem to be solved by the utility model is to provide a magnetic declination measuring device with simple operation, stable clamping, good measurement stability and high measurement efficiency.

The utility model provides a magnetic declination measuring device, which includes a support frame, a measuring platform, a magnetic field generating device and a measuring fixture, the measuring platform and the magnetic field generating device are respectively fixed on the supporting frame, and the measuring fixture is placed On the measuring table and located at the geometric center of the magnetic field generating device, the measuring fixture includes a base with a storage space, two movable splints erected in the storage space and oppositely arranged, and an elastic spring connecting the two movable splints. The base includes two first frames of hollow structure, two second frames respectively connected with the two first frames, a bottom frame connected with the first frame and the second frame at the same time, and set on the two The two sliding grooves on opposite sides of the first frame, the two first frames, the two second frames and the bottom frame together form the receiving space, and the movable splint is clamped in the two sliding grooves and Sliding along the sliding groove, the elastic member is fixed in the first frame and connected to two ends of the movable splint respectively.

Preferably, the measuring jig further includes a clip opening portion disposed on a side of the movable splint away from the bottom frame.

Preferably, the movable splint includes two limiting parts, and the two limiting parts abut against opposite sides of the two first frames respectively.

Preferably, the movable splint further includes a clamping layer on its side away from the second frame.

Preferably, the clamping layer is a rubber layer.

Preferably, the measuring fixture is made of aluminum or plastic or wood.

Preferably, the elastic member is a spring.

Preferably, the magnetic field generating device is a three-dimensional Helmholtz coil.

Compared with the related technology, the magnetic declination measuring device of the present utility model is used to measure the magnetic declination of the permanent magnet, and the measuring fixture is opened by stretching the distance between the two movable splints, and the permanent magnet to be tested is placed on the said permanent magnet. After the accommodating space of the measuring fixture, the two second movable splints slide along the sliding groove under the action of the elastic member respectively, thereby clamping the permanent magnet, which is stable and easy to operate. Then place the measuring fixture clamped with the permanent magnet on the measuring platform, and accurately measure the magnetic declination of the permanent magnet through the magnetic field generating device. The magnetic declination measuring device has the advantages of simple operation, stable clamping, avoiding scratches or damage to the measured permanent magnet, and high measurement efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model magnetic declination measuring device;

Fig. 2 is a partial three-dimensional structural schematic diagram of the magnetic declination measuring device in Fig. 1;

Fig. 3 is the structural representation of the measuring fixture of magnetic declination measuring device in Fig. 1;

Fig. 4 is a sectional view along line A-A shown in Fig. 3 .

detailed description

The utility model will be further described below in conjunction with drawings and embodiments.

Please refer to FIG. 1 and FIG. 2 at the same time, wherein FIG. 1 is a schematic structural diagram of the magnetic declination measuring device of the present invention; FIG. 2 is a partial three-dimensional structural schematic diagram of the magnetic declination measuring device in FIG. 1 . The magnetic declination measuring device 1 includes a support frame 10 , a magnetic field generating device 11 , a measuring platform 13 , a fluxmeter 15 , a measuring fixture 17 and a processor 19 . The magnetic field generating device 11 and the measuring platform 13 are respectively fixed on the support frame 10 , and the measuring fixture 17 is placed on the measuring platform 13 and located at the geometric center of the magnetic field generating device 11 . The fluxmeter 15 is electrically connected to the magnetic field generator 11 . The processor 19 is electrically connected to the fluxmeter 15, and the processor 19 synthesizes and processes the signals transmitted from the fluxmeter 15, and finally outputs the magnetic declination value of the permanent magnet (not shown).

The magnetic field generator 11 is a three-dimensional Helmholtz coil. The magnetic field generating device 11 can simultaneously and independently measure the magnetic moments of the permanent magnet in three directions in the three-dimensional coordinate space, thereby ensuring the accuracy and efficiency of measuring the magnetic declination.

The measuring platform 13 is disposed on the supporting frame 10 and located in the magnetic field generating device 11 . The measurement platform 13 is used to support the measurement fixture 17 and adjust the position of the measurement fixture 17 according to the measurement needs. In order to ensure measurement accuracy, the measurement fixture 17 is located in the uniform area of the magnetic field. In this embodiment, the measuring fixture 17 is located at the geometric center of the magnetic field generating device 11 .

The fluxmeter 15 has an integrating circuit, and the integrating circuit will receive the electromotive force generated by the Helmholtz coil in the magnetic field generating device 11 and perform integral processing and transmit the signal to the processor 19, thereby calculating the measured The magnetic declination of the permanent magnet.

Please refer to FIG. 3 and FIG. 4 at the same time. FIG. 3 is a schematic structural diagram of the measuring fixture of the magnetic declination measuring device in FIG. 1 ; FIG. 4 is a sectional view along line A-A shown in FIG. 3 . The measuring fixture 17 includes a base 171 , two movable splints 173 , an opening portion 177 and two elastic members 179 . The base 171 is placed on the measuring platform 13 and has a receiving space 1710 . The two movable splints 173 are arranged parallel to each other and erected in the receiving space 1710 . The opening portion 177 is disposed on a side of the movable splint 173 away from the bottom frame. The elastic members 179 are respectively connected to the two ends of the two movable splints 173 , so as to respectively pull the two movable splints 173 to move relative to each other, so as to clamp the permanent magnets. In this embodiment, the measurement fixture 17 is made of aluminum, plastic or wood, so as to prevent it from being magnetized during use and affecting the measurement accuracy. It should be noted that, in order to avoid the influence of the measuring fixture 17 on the magnetic field, all parts of the measuring fixture 17 are made of non-magnetic materials.

The base 171 includes two first frames 1711 , two second frames 1712 , a bottom frame 1713 and a sliding slot 1715 . Second, the first frame 1711 is a hollow structure. The two second frames 1712 are respectively connected to the two first frames 1711 . The bottom frame 1713 is connected to the two first frames 1711 and the two second frames 1712 at the same time. The two first frames 1711 , the two second frames 1712 and the bottom frame 1713 jointly enclose the receiving space 1710 . The two sliding slots 1715 are respectively defined on opposite sides of the two first frames 1711 and extend along the length direction of the first frame 1711 .

The movable splint 173 includes a splint 1731 , two limiting portions 1733 and a clamping layer 1735 . The clamping plate 1731 is locked in the two sliding grooves 1715 and erected in the receiving space 1710 , and the clamping plate 1731 slides along the two sliding grooves 1715 . The two limiting portions 1733 are disposed on the splint 1731 and abut against opposite sides of the two first frames 1711 respectively, so as to prevent the splint 1731 from being displaced in the sliding groove 1715 . The clamping layer 1735 is disposed on the side of the clamping plate 1731 away from the second frame 1712 , and the movable clamping plate 173 clamps the permanent magnet through the clamping layer 1735 . In this embodiment, the rubber layer of the clamping layer 1733 has a large surface friction force and is relatively soft, so that the friction force between the clamping layer 1733 and the permanent magnet is large, thereby increasing the stability, and at the same time Avoid scratching or damaging the permanent magnets.

The elastic member 179 is fixedly disposed in the first frame 1711 , so as to prevent the integral body formed by the elastic member 179 and the two movable splints 173 from sliding along the length direction of the sliding groove 1715 . In this embodiment, the middle position of the elastic member 179 is fixedly connected to the first frame 1711, and the two ends of the elastic member 179 are respectively connected to the two movable splints 173, so that the clamp of the measuring fixture 17 Good stability. The two movable splints 173 are respectively pulled by the opening part 177, so that the distance between the two movable splints 173 is increased, so that the permanent magnet is placed in the measuring fixture 17; The clamping part 177 is opened, and the elastic member 179 shrinks to pull the two movable splints 173 to clamp the permanent magnet. The process of clamping the permanent magnet is easy to operate, so that the measurement efficiency is high. Wherein, the elastic member 179 is a spring, which has the advantages of simple structure, low cost and large elastic force, and further increases the clamping stability of the measuring fixture 17 .

Compared with the related technology, the magnetic declination measuring device of the present utility model is used to measure the magnetic declination of the permanent magnet, and the measuring fixture is opened by stretching the distance between the two movable splints, and the permanent magnet to be tested is placed on the said permanent magnet. After the accommodating space of the measuring fixture, the two second movable splints slide along the sliding groove under the action of the elastic member respectively, thereby clamping the permanent magnet, which is stable and easy to operate. Then place the measuring fixture clamped with the permanent magnet on the measuring platform, and accurately measure the magnetic declination of the permanent magnet through the magnetic field generating device. The magnetic declination measuring device has the advantages of simple operation, stable clamping, avoiding scratches or damage to the measured permanent magnet, and high measurement efficiency.

The above descriptions are only examples of the utility model, and are not intended to limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation made by using the utility model specification and accompanying drawings may be directly or indirectly used in other applications. Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (8)

1. A magnetic declination measuring device, comprising a support frame, a measuring platform, a magnetic field generating device and a measuring fixture, the measuring platform and the magnetic field generating device are respectively fixed on the supporting frame, and the measuring fixture is placed on the On the measuring platform and located at the geometric center of the magnetic field generating device, it is characterized in that the measuring fixture includes a base with a receiving space, two movable splints erected in the receiving space and arranged oppositely, and connecting the two movable splints The elastic member, the base includes two first frames of hollow structure, two second frames respectively connected with the two first frames, a bottom frame connected with the first frame and the second frame at the same time, and an opening The two sliding grooves extend along the lengthwise direction of the first frame on opposite sides of the two first frames, the two first frames, the two second frames and the bottom frame jointly enclose the receiving space, so The movable splint is fixed in the two sliding grooves and slides along the sliding grooves, and the elastic member is fixed in the first frame and connected to two ends of the movable splint respectively. 2 . The magnetic declination measuring device according to claim 1 , wherein the measuring fixture further comprises a clip opening portion disposed on a side of the movable splint away from the bottom frame. 3 . 3 . The magnetic declination measuring device according to claim 1 , wherein the movable splint comprises two limiting parts, and the two limiting parts abut against opposite sides of the two first frames respectively. 4 . 4 . The magnetic declination measuring device according to claim 3 , wherein the movable splint further comprises a clamping layer on a side thereof away from the second frame. 5. The magnetic declination measuring device according to claim 4, characterized in that, the clamping layer is a rubber layer. 6. The magnetic declination measuring device according to claim 1, characterized in that, the measuring fixture is made of aluminum or plastic or wood. 7. The magnetic declination measuring device according to claim 6, wherein the elastic member is a spring. 8. The magnetic declination measuring device according to claim 1, wherein the magnetic field generating device is a three-dimensional Helmholtz coil.