阅读说明：本技术 一种液浮陀螺仪定子磁钢闭路充磁结构 (Closed-circuit magnetizing structure for stator magnetic steel of liquid floated gyroscope ) 是由 侯文超 赵倩云 吴萌萌 刘金龙 谢东方 于 2019-11-14 设计创作，主要内容包括：本发明涉及一种液浮陀螺仪定子磁钢闭路充磁结构,包括定子座及磁钢,其特征在于：还包括推送螺杆、导磁磁路、胀母、胀环、止挡片及螺钉,导磁磁路为下部敞口的套筒形,推送螺杆下部伸入至导磁磁路的内部腔体,并与导磁磁路的顶面螺纹连接,推送螺杆下端螺纹套装胀母,在胀母外套装胀环,胀环下部设置止挡片,且止挡片通过螺钉与推送螺杆底端固定,在胀环外套装定子座,定子座底部固装磁钢,推送螺杆转动实现将定子座及磁钢拉进或推出导磁磁路的内部腔体。本发明用于液浮陀螺仪定子磁钢闭路充磁结构,定子座、磁钢的充磁及壳体安装均位于充磁磁路中,从而极大地减小了定子由于磁路的改变引起磁场强度的降低。(The invention relates to a closed-circuit magnetizing structure for stator magnetic steel of a liquid floated gyroscope, which comprises a stator seat and magnetic steel and is characterized in that: the magnetic circuit is in a sleeve shape with an open lower part, the lower part of the pushing screw extends into the inner cavity of the magnetic circuit and is in threaded connection with the top surface of the magnetic circuit, the lower end of the pushing screw is sleeved with the expansion nut, the expansion ring is sleeved outside the expansion nut, the lower part of the expansion ring is provided with a stop piece, the stop piece is fixed to the bottom end of the pushing screw through the screw, the stator seat is sleeved outside the expansion ring, magnetic steel is fixedly installed at the bottom of the stator seat, and the pushing screw rotates to pull the stator seat and the magnetic steel into or push out the inner cavity of the magnetic circuit. The invention is used for the closed-circuit magnetizing structure of the stator magnetic steel of the liquid floated gyroscope, and the magnetizing of the stator seat and the magnetic steel and the installation of the shell are all positioned in the magnetizing magnetic circuit, thereby greatly reducing the reduction of the magnetic field intensity of the stator caused by the change of the magnetic circuit.)

1. The utility model provides a liquid floated gyroscope stator magnet steel closed circuit structure that magnetizes, includes stator seat and magnet steel, its characterized in that: the magnetic circuit is in a sleeve shape with an open lower part, the lower part of the pushing screw extends into the inner cavity of the magnetic circuit and is in threaded connection with the top surface of the magnetic circuit, the lower end of the pushing screw is sleeved with the expansion nut, the expansion ring is sleeved outside the expansion nut, the lower part of the expansion ring is provided with a stop piece, the stop piece is fixed to the bottom end of the pushing screw through the screw, the stator seat is sleeved outside the expansion ring, magnetic steel is fixedly installed at the bottom of the stator seat, and the pushing screw rotates to pull the stator seat and the magnetic steel into or push out the inner cavity of the magnetic circuit.

2. The magnetic steel closed-circuit magnetizing structure for the stator of the liquid floated gyroscope according to claim 1, wherein: the magnetic conduction magnetic circuit is a 4J36 soft magnetic material magnetic conduction magnetic circuit.

3. The magnetic steel closed-circuit magnetizing structure for the stator of the liquid floated gyroscope according to claim 1, wherein: the inner cavity of the magnetic conduction magnetic circuit is in a step shape, and the inner diameter of the open end of the magnetic conduction magnetic circuit is larger than that of the closed end.

Technical Field

The invention belongs to the technical field of inertial measurement sensors, and particularly relates to a closed-circuit magnetizing structure for stator magnetic steel of a liquid-floated gyroscope, which has high precision, small volume and low cost.

Background

At present, no report about the maintenance of the soda gyroscope exists in China. This type of gyroscope involves a very severe indicator, i.e. the range of gyroscope scale factors, during maintenance. Therefore, the magnetic field intensity of the stator magnetic steel of the torquer cannot be lost too much in the maintenance process. However, the magnetic steel material of the stator of the liquid-floated gyroscope torquer is an alnico alloy, and the stator can be taken out of the gyroscope shell in the maintenance process, so that the magnetic circuit changes to reduce the magnetic field intensity of the stator magnetic steel, thereby causing the maintenance to be difficult to be carried out smoothly.

The current solution to this problem is to replace the completely new torquer stator magnetic steel, but still the problem of the reduction of the magnetic field intensity when the stator magnetic steel is taken out of the magnetizing machine cannot be avoided.

Therefore, aiming at the problem of reducing the magnetic field intensity of the stator magnetic steel, the closed-circuit magnetizing structure is designed, and the reduction of the magnetic field intensity of the stator caused by the change of a magnetic circuit is greatly reduced.

Disclosure of Invention

The invention aims to provide a closed-circuit magnetizing structure for magnetic steel of a stator of a liquid floated gyroscope, which reduces the loss of the stator caused by the change of a magnetic circuit, and can reduce the magnetic field loss of the stator by about 500Gs according to theoretical calculation and related simulation.

The technical problem to be solved by the invention is realized by the following technical scheme:

the utility model provides a liquid floated gyroscope stator magnet steel closed circuit structure that magnetizes, includes stator seat and magnet steel, its characterized in that: the magnetic circuit is in a sleeve shape with an open lower part, the lower part of the pushing screw extends into the inner cavity of the magnetic circuit and is in threaded connection with the top surface of the magnetic circuit, the lower end of the pushing screw is sleeved with the expansion nut, the expansion ring is sleeved outside the expansion nut, the lower part of the expansion ring is provided with a stop piece, the stop piece is fixed to the bottom end of the pushing screw through the screw, the stator seat is sleeved outside the expansion ring, magnetic steel is fixedly installed at the bottom of the stator seat, and the pushing screw rotates to pull the stator seat and the magnetic steel into or push out the inner cavity of the magnetic circuit.

Furthermore, the magnetic conduction magnetic circuit is a 4J36 soft magnetic material magnetic conduction magnetic circuit.

And the inner cavity of the magnetic conduction magnetic circuit is in a step shape, and the inner diameter of the open end of the magnetic conduction magnetic circuit is larger than that of the closed end.

The invention has the advantages and beneficial effects that:

1. the invention relates to a closed-circuit magnetizing structure of liquid-floated gyroscope stator magnetic steel, wherein a pushing screw is arranged on a magnetic conduction magnetic path in a threaded manner, firstly, the magnetic conduction magnetic circuit is assembled on the pushing screw rod, the pushing screw rod extends out of the magnetic conduction magnetic circuit to expose the expansion nut and the expansion ring, the stator seat is arranged on the expansion ring, the expansion nut is screwed in the reverse direction until the stator seat is firmly clamped, the magnetic steel is assembled on the stator seat, then the expansion nut is screwed to the top surface part in the magnetic conduction magnetic circuit through a pushing screw rod to complete the assembly of the stator seat and the magnetic steel, the whole closed circuit magnetizing structure is put into a magnetizing machine for magnetizing, then the shell of the stator is arranged in the magnetic conduction magnetic circuit, after the stator is assembled to the shell by utilizing the pushing screw rod, the expansion nut and the expansion ring are sequentially dismounted, the closed-circuit magnetizing structure is removed, the pushing screw is mainly used for pulling the stator seat and the magnetic steel into and out of the magnetic conduction magnetic circuit, and the expansion nut and the expansion ring are mainly used for clamping the stator seat.

2. The invention relates to a closed-circuit magnetizing structure for stator magnetic steel of a liquid floating gyroscope, wherein a magnetic conduction magnetic circuit is a 4J36 soft magnetic material magnetic conduction magnetic circuit, and a magnetizing and stator seat, the magnetic steel and a shell are arranged in the magnetic conduction magnetic circuit, so that the magnetic field intensity loss of a stator is reduced by about 500Gs, and the assembly efficiency of the gyroscope is improved by 30%.

3. The invention relates to a closed magnetic steel magnetizing structure of a stator of a liquid floated gyroscope, wherein the inner cavity of a magnetic conduction magnetic circuit is in a step shape, and the inner diameter of an open end of the magnetic conduction magnetic circuit is larger than that of a closed end, so that the shell of the gyroscope is convenient to position and install.

4. The invention relates to a closed-circuit magnetizing structure for stator magnetic steel of a liquid floating gyroscope, which utilizes an expansion nut, an expansion ring, a pushing screw rod and the like to realize clamping, positioning and pushing of a stator seat, and the magnetizing and shell installation of the stator seat and the magnetic steel are all positioned in a magnetizing magnetic circuit, thereby greatly reducing the reduction of the magnetic field intensity of a stator caused by the change of the magnetic circuit.

Drawings

FIG. 1 is an assembly schematic diagram of a closed-circuit magnetizing structure of stator magnetic steel of a liquid floated gyroscope.

Description of the reference numerals

1-pushing a screw; 2-magnetic conduction magnetic circuit; 3-expanded mother; 4-expanding a ring; 5-stopping sheet; 6-screw; 7-a stator seat; 8-magnetic steel.

Detailed Description

The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.

As shown in fig. 1, a closed magnetic structure for stator magnetic steel of a liquid floated gyroscope, including a stator seat 7 and magnetic steel 8, and further including a push screw 1, a magnetic conduction magnetic circuit 2, an expansion nut 3, an expansion ring 4, a stop piece 5 and a screw 6, where the magnetic conduction magnetic circuit 2 is in a sleeve shape with an open lower portion, the lower portion of the push screw 1 extends into an internal cavity of the magnetic conduction magnetic circuit 2 and is in threaded connection with the top surface of the magnetic conduction magnetic circuit 2, the expansion nut 3 is sleeved on the lower end of the push screw 1, the expansion ring 4 is sleeved outside the expansion nut 3, the stop piece 5 is arranged on the lower portion of the expansion ring 4, the stop piece 5 is fixed to the bottom end of the push screw 1 through the screw 6, a stator seat 7 is sleeved outside the expansion ring 4, the magnetic steel 8 is fixedly installed at the bottom of the stator seat 7, and the push screw 1 rotates to pull the stator seat 7. The magnetic conduction magnetic circuit 2 is a 4J36 soft magnetic material magnetic conduction magnetic circuit 2. The inner cavity of the magnetic conduction magnetic circuit 2 is in a step shape, and the inner diameter of the open end of the magnetic conduction magnetic circuit 2 is larger than that of the closed end.

The working principle of the invention is as follows:

the method comprises the steps of mounting a pushing screw 1 on a magnetic conduction magnetic circuit 2 in a threaded manner, assembling the magnetic conduction magnetic circuit 2 onto the pushing screw 1 when assembling, enabling the pushing screw 1 to extend out of the magnetic conduction magnetic circuit 2, exposing an expansion nut 3 and an expansion ring 4, mounting a stator seat 7 on the expansion ring 4, screwing the expansion nut 3 in a reverse direction until the stator seat 7 is firmly clamped, assembling magnetic steel 8 onto the stator seat 7, screwing the expansion nut 3 to the top surface part in the magnetic conduction magnetic circuit 2 through the pushing screw 1 to complete assembling of the stator seat 7 and the magnetic steel 8, putting the whole closed-circuit magnetizing structure into a magnetizing machine for magnetizing, then putting a shell of a stator into the magnetic conduction magnetic circuit 2, assembling the stator to the shell by utilizing the pushing screw 1, sequentially detaching the expansion nut 3 and the expansion ring 4 and removing the closed-circuit magnetizing structure, wherein the pushing screw 1 mainly plays a role in pulling and pushing the stator seat 7 and the magnetic steel 8 into and out of the magnetic conduction magnetic circuit 2, the expansion nut 3 and the expansion ring 4 are mainly used for clamping the stator seat 7. The magnetizing and the shell installation of the stator seat 7 and the magnetic steel 8 are all positioned in the magnetizing magnetic circuit 2, so that the reduction of the magnetic field intensity of the stator caused by the change of the magnetic circuit is greatly reduced.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.