Device and method for adjusting static balance of gyrosphere

Abstract

The invention relates to the technical field of physical navigation, in particular to an adjusting device and method for static balance of a gyroball. An adjusting method for static balance of a gyroball comprises the following steps: in production of a shell of the gyroball, uniformly arranging at least three reference marks at intervals along the same position of a rotating shaft of a spherical surface, soaking the gyroball in fluorine chlorine oil, and heating the fluorine chlorine oil to a preset temperature so as to suspend the gyroball in the fluorine chlorine oil, and judging whether the plurality of reference marks on the spherical surface are consistent with the liquid level height difference of the fluorine chlorine oil or not according to the height of the reference marks and the liquid level of the fluorine chlorine oil. The working environment of the gyro ball is simulated, the rotating shaft is visualized through the reference mark, and the gyro ball is soaked in fluorine chlorine oil to enable buoyancy to participate in the fluorine chlorine oil, so that the problems that in the prior art, a detection device is complex and can only detect whether the gravity center is located on the rotating shaft or not, and the detection result is inaccurate due to lack of buoyancy center detection are solved.

Description

Technical Field

[0001] The present invention relates to the field of physical navigation technology, and in particular to a device and method for adjusting the static balance of a gyro ball. Background Art

[0002] As a navigation instrument that can accurately find the geographic north direction, the gyrocompass is widely used on various types of ships and has become the main instrument for maritime navigation. It consists of a gyro motor, an inner spherical shell, a middle ring, an outer ring, and an outer spherical shell. The gyro motor is sealed inside the inner spherical shell, forming a "gyro ball". The gyro ball is supported by the middle ring and then sealed in the outer ball. The gyro ball is the core component of the gyrocompass. Its working principle is based on the law of conservation of angular momentum. When the rotor rotates at high speed, it has a large angular momentum. If the base of the gyroscope rotates, the rotor shaft will try to maintain its original direction, resulting in a relative rotation angle change. Based on this rotation angle change, the angle change of the base can be reversely deduced, thereby obtaining the angle change of the ship.

[0003] In order to ensure the free rotation of the gyro ball, fluorochloro oil is filled in the outer spherical shell. When the fluorochloro oil is heated to 60 degrees Celsius, the gyro ball can be suspended in the fluorochloro oil to maintain a small friction with the surrounding parts. The gyroscope is a high-precision instrument with high requirements for manufacturing and assembly precision. The manufactured gyro ball should satisfy that its center of gravity and center of buoyancy are both on the rotation axis, so that when the gyro ball rotates, it can remain stable. In the actual production process, due to the uniformity of the texture of the manufacturing material and the manufacturing process, the center of gravity and center of buoyancy of the gyro ball are not all located on the rotation axis, which will cause the gyro ball to swing during the rotation process, affecting the accuracy of the gyroscope. Therefore, in the prior art, the center of gravity and center of buoyancy of the gyro ball are detected before the gyroscope is assembled to see if they are on the rotation axis.

[0004] In the prior art, special tooling is often used to control the rotation of the gyro ball, and then precision instruments are used to determine whether the gyro ball has a yaw or whether the force changes during rotation. The above detection method is relatively complicated, and generally only the relationship between the center of gravity and the rotation axis can be obtained. Since the gyro ball is also affected by the buoyancy of fluorochlorofluoro oil during rotation, the position of the buoyancy center is also important, but the above detection method cannot determine whether the position of the buoyancy center is appropriate. Summary of the invention

[0005] In view of this, the present invention provides an adjustment method for the static balance of a gyro ball, so as to solve the problem in the prior art that the detection device is complicated and can only detect whether the center of gravity is located on the rotation axis but lacks the center of buoyancy detection, resulting in inaccurate detection results; the present invention also provides an adjustment device for the static balance of a gyro ball, so as to solve the above-mentioned technical problems.

[0006] A method for adjusting the static balance of a gyro ball comprises the following steps: in the production of a shell of the gyro ball, at least three reference marks are evenly spaced at the same position along the rotation axis of the spherical surface; the gyro ball is immersed in fluorochloro-oil, and the fluorochloro-oil is heated to a preset temperature so that the gyro ball is suspended in the fluorochloro-oil; it is determined whether the height difference between the multiple reference marks on the spherical surface and the liquid level of the fluorochloro-oil is consistent; and according to the height difference between the reference marks and the liquid level of the fluorochloro-oil, a counterweight screw and a buoyancy adjustment block on the gyro ball are adjusted until the multiple reference marks are consistent with the liquid level difference of the fluorochloro-oil.

[0007] Furthermore, a sealable box structure is used to contain the fluorochloro oil, and after the fluorochloro oil is heated to a preset temperature, a vacuum machine is used to evacuate the inside of the sealed box structure.

[0008] Further, before suspending the gyro ball in the fluorochloro oil, the weight screw is adjusted so that the reference mark faces upward when the gyro ball is placed in the fluorochloro oil.

[0009] Furthermore, when heating the fluorochlorofluroic oil, a water bath heating method is adopted.

[0010] The beneficial effects of the static balance adjustment method of the gyro ball in the present invention are as follows: the static balance adjustment method of the gyro ball in the present invention arranges at least three reference marks evenly at intervals along the rotation axis of the spherical surface during the production process, a plane can be determined by multiple reference marks, and the plane is perpendicular to the rotation axis, so that the position of the rotation axis can be understood through the reference marks; the friction between the gyro ball and the surrounding parts is reduced by immersing the gyro ball in fluorochloro-oil and heating the fluorochloro-oil to a preset temperature so that the gyro ball is suspended in the fluorochloro-oil, and on the other hand, the actual working environment of the gyro ball can be simulated, so that the gyro ball can automatically adjust its position under the action of gravity and buoyancy; during the adjustment, Since the position of the rotation axis can be expressed by multiple reference points, when the multiple reference points remain horizontal, it can be considered that the rotation axis is located at the center of the gyro ball and is arranged vertically; since fluorochlorofluoro oil is liquid, the surface of fluorochlorofluoro oil is naturally horizontal, so the center of gravity and the center of buoyancy can be adjusted by adjusting the counterweight screws and the center of buoyancy adjustment block on the gyro ball until the center of gravity and the center of buoyancy are both on the vertical rotation axis; that is, by simulating the working environment of the gyro ball, and visualizing the rotation axis through reference marks, and immersing the gyro ball in fluorochlorofluoro oil so that buoyancy is involved, the problem in the prior art that the detection device is complicated and can only detect whether the center of gravity is located on the rotation axis, but lacks center of buoyancy detection, resulting in inaccurate detection results is solved.

[0011] A device for adjusting the static balance of a gyro ball comprises a container box for containing fluorochlorofluroic oil, the container box comprising a box body and a cover body for being assembled together, the box body and the cover body are sealed and matched, the box body and / or the cover body are provided with an observation structure for observing the inside of the box body, the cover body is also provided with an exhaust hole, the exhaust hole is provided with a one-way valve for allowing gas to flow from the inside of the container box to the outside of the container box, and the cover body is also provided with a barometer for detecting the air pressure in the container box.

[0012] Furthermore, the cover body is a transparent cover body, an annular groove is arranged on the end surface of the box body in contact with the cover body, and an extrusion sealing ring is arranged in the annular groove.

[0013] Furthermore, the adjustment device for the static balance of the gyro ball also includes a water bath, in which the container is placed so as to perform water bath heating on the container when hot water is filled into the water bath.

[0014] Furthermore, the box body is provided with an outward turning edge, and the top of the water bath is provided with a placement hole for the box body to be placed in. The outer edge of the placement hole is used to cooperate with the outward turning edge stopper on the box body so that the bottom of the box body is spaced apart from the inner bottom wall of the water bath.

[0015] Furthermore, the water bath is provided with a water thermometer for measuring the temperature of the water in the water bath and a detection probe of the water thermometer.

[0016] Furthermore, the box body is made of non-magnetic metal material.

[0017] The beneficial effects of the gyro ball static balance adjustment device of the present invention are as follows: the gyro ball static balance adjustment device of the present invention is convenient to immerse the gyro ball in the fluorine-chlorine oil in the containing box when conducting an experiment by arranging a containing box for containing fluorine-chlorine oil; by arranging a sealed matching box body and a cover body, it is convenient to form a closed space, which is convenient to reduce the interference of surrounding factors; by arranging an exhaust hole, it is convenient to evacuate the inside of the containing box after connecting the vacuum machine, further simulating the working environment of the gyro ball, so that the detection result and the adjustment result are more real; by arranging a one-way valve, the difficulty of exhaust is reduced, and the gas is prevented from re-entering the containing box during the shutdown process, causing the vacuum failure; the air pressure in the containing box can be detected in real time by a barometer, which is convenient to observe the vacuum result; because the containing box is convenient to immerse the gyro in the fluorine-chlorine oil, it is convenient to let the buoyancy also participate, and it is convenient to adjust the buoyancy center; thereby solving the problem that the detection device in the prior art is complicated and can only detect whether the center of gravity is located on the rotating axis, but lacks the buoyancy center detection, resulting in inaccurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the adjustment device for static balance of a gyro ball in the present invention (for the convenience of illustration, the gyro ball is shown in the figure);

[0020] Figure 2 It is a structural schematic diagram of a container in an embodiment of a device for adjusting the static balance of a gyro ball in the present invention (for the convenience of illustration, a gyro ball is shown in the figure);

[0021] Figure 3 It is a schematic diagram of the structure of the reference marks in the gyro ball in the embodiment of the adjustment device for the static balance of the gyro ball in the present invention.

[0022] The meanings of the numbers in the figure are: 1. gyro ball; 11. reference mark; 2. box body; 21. outer edge; 22. sealing ring; 3. cover body; 31. one-way valve; 32. vacuum gauge; 4. water bath; 41. thermometer; 42. display; 5. fluorochloro-oil; 6. boundary line between the spherical surface and the liquid surface. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0024] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms and should not be understood as indicating or implying relative importance. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0026] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module" and "component" can be used interchangeably.

[0029] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0030] In the embodiment 1 of the device for adjusting the static balance of the gyro ball of the present invention:

[0031] In the present embodiment, during the adjustment process, the gyro ball is immersed in fluorochloroethane and adjusted according to the posture of the gyro ball. A reference point is pre-set on the gyro ball to indicate the position of the rotation axis of the gyro ball. The center of gravity, the center of buoyancy and the relative position of the rotation axis can be adjusted when the gyro ball is stationary.

[0032] Specifically, Figure 1 and Figure 2As shown, the adjustment device for the static balance of the gyro ball 1 includes a container box for containing fluorochlorofluoic oil 5 and a water bath box 4 arranged outside the container box. The water bath box 4 is used to contain hot water, thereby facilitating heating of the container box. The fluorochlorofluoic oil 5 is contained in the container box, which facilitates immersing the gyro ball 1 in the container box during the experiment, so as to observe and adjust the gyro ball 1.

[0033] The purpose of the adjustment is to adjust the center of gravity and the center of buoyancy of the gyro ball 1 to the rotation axis, so that the gyro ball 1 is more stable during operation and its accuracy is improved. Since the rotation axis of the gyro ball 1 is a virtual axis, it is generally difficult to directly observe it during the experiment. Figure 3 As shown, in this embodiment, the gyro ball 1 is adjusted. During the manufacturing process, the gyro ball 1 has a motor and other structures inside, so its rotation axis should be determined. Setting a mark for the rotation axis makes it convenient to observe the rotation axis in other ways. Specifically, four reference marks 11 are evenly spaced at the same position along the rotation axis of the spherical surface of the gyro ball 1. Since they are for the same position of the rotation axis, the four reference marks 11 are located in the same plane, and the plane remains perpendicular to the rotation axis. That is, in this embodiment, the rotation axis of the gyro ball 1 is visualized, and the real-time position of the actual rotation axis can be realized through the reference mark 11. Of course, in other embodiments, the reference mark can also be set to three or five or other numbers not less than three.

[0034] like Figure 1 and Figure 2 As shown, since the gyro ball 1 needs to be kept immersed in the container during the experiment, the container is divided into a box body 2 and a cover body 3 located at the top of the box bottom. In order to avoid the influence of magnets on the experimental results during the experiment, the box body 2 and the cover body 3 are both made of non-magnetic materials. The box body 2 needs to bear the weight of the fluorochloro oil 5, so the box body 2 is made of a metal material with higher strength. In this embodiment, the box body 2 is a copper box body to avoid the waste of fluorochloro oil 5 caused by rupture during use. The cover body 3 is an acrylic plate, and the acrylic plate is a transparent plate. Under the premise of achieving the sealing between the cover body 3 and the box body 2, the situation inside the box body 2 can be observed from above, and the transparent acrylic plate also constitutes an observation structure. Since it is necessary to achieve the sealing between the cover body 3 and the box body 2, an outwardly turned edge 21 is provided at the upper end of the box body 2, and an annular groove is provided on the turned edge 21, and an extrusion sealing ring 22 is provided in the annular groove. Of course, in other embodiments, an annular groove may no longer be provided on the turned edge, but an annular sealing pad may be provided. Alternatively, in other embodiments, the box and the cover may be both made of transparent acrylic plates. Alternatively, in other embodiments, the box and the cover may be both made of metal, and transparent observation windows may be provided on the box and the cover.

[0035] In order to simulate a more realistic environment, an exhaust hole is also provided on the cover 3, and a one-way valve 31 for one-way flow of gas from the inside of the container to the outside of the container is provided on the exhaust hole. When in use, a vacuum machine can be connected to realize vacuuming. Fluorine chlorofluid 5 will dissolve part of the air under normal circumstances, causing the density of fluorochlorofluid 5 to decrease. In order to maintain the suspended state of gyro ball 1 in fluorochlorofluid 5, it is necessary to maintain the density balance of fluorochlorofluid 5, and there will be no situation where the local density is large and the local density is small. When vacuuming, it will affect the air pressure inside the container, making the air pressure lower. The lower the air pressure, the lower the solubility of the liquid, and then the gas dissolved in fluorochlorofluid 5 is discharged, so that fluorochlorofluid 5 reduces the air dissolved inside as much as possible and returns to normal and balanced density. In order to monitor the air pressure, a barometer for monitoring the air pressure in the container is also provided on the cover 3. In this embodiment, the barometer is a vacuum gauge, which is used to detect the vacuum degree inside the box 2 and maintain the vacuum degree within a suitable range.

[0036] In order to facilitate heating of fluorochloro oil 5, the adjustment device for static balance of gyro ball 1 in this embodiment also includes water bath box 4. The top of water bath box 4 is provided with a placement hole for placing the box body 2 of the container box, and the placement hole is located at the top center of water bath box 4. The outer turning edge 21 provided on the box body 2 of the container box can be stopped and matched with the outer edge of the placement hole, so that the bottom of the container box is suspended, that is, the box bottom of the box body 2 is arranged at intervals with the inner bottom wall of the water bath box 4. Through such arrangement, the side wall and the bottom wall of the box body 2 can be heated by water. When heating in water bath, the heat source is more dispersed, and the heating is more uniform, avoiding the uneven density caused by the high temperature of some parts of fluorochloro oil 5 in the container box and the low temperature of some parts. In order to accurately control the water temperature, a water thermometer for measuring the water temperature of the water in the water bath box 4 is also provided in the water bath box 4. The detection probe of the water thermometer is lower than the bottom of the container box, ensuring that the detection probe of the water thermometer can always be under the water surface when heating in water bath. In order to facilitate the operator to control the temperature in real time, a display 42 connected to a water thermometer and capable of displaying the real-time water temperature is also provided on the water bath 4. Of course, in other embodiments, a water bath may not be provided, and a heating wire may be provided in the container. Alternatively, in other embodiments, an outward turning edge on the container body may not be provided, and the container body of the container may be directly placed on the bottom of the water bath. Alternatively, in other embodiments, a water thermometer may be provided in the container.

[0037] In an embodiment of the method for adjusting the static balance of a gyro ball of the present invention:

[0038] In this embodiment, the structure in the adjustment device for the static balance of the gyro ball is used as an example to describe the adjustment method for the static balance of the gyro ball in this embodiment. First, when manufacturing the gyro ball, reference marks are evenly spaced at the same position of the rotation axis of the spherical surface on the shell of the gyro ball to complete the preparation work before the experiment. During the experiment, the container box is placed in a water bath and filled with hot water, and fluorine chlorinated oil is placed in the container box. Under the water bath heating of the water bath, the fluorine chlorinated oil in the container box will be heated to the set temperature. In this embodiment, the set temperature is 60 degrees Celsius. Of course, if in other cases, such as when the gyro ball works normally, the fluorine chlorinated oil is at other temperatures, the temperature needs to be adjusted to the same temperature accordingly to ensure that the fluorine chlorinated oil temperature of the gyro ball is the same as the fluorine chlorinated oil temperature during actual work. Afterwards, the box body and the cover body of the container box are assembled together, and a vacuum machine is connected to a one-way valve to pump the gas in the container box outward, and the air pressure in the container box is understood in real time through a barometer until the air pressure drops to a preset range. Then observe inward through the cover body to determine whether the multiple reference marks on the spherical surface are the same as the height difference of the liquid level of fluorochloro-oil. If they are the same, it means that the rotation axis is perpendicular to the horizontal plane at this time, and naturally its center of gravity and center of buoyancy are both located on the vertical rotation axis. It is worth noting that before making adjustments, it is necessary to adjust the counterweight screw so that the reference mark of the gyro ball faces upward when the fluorochloro-oil is placed, that is, the center of gravity of the gyro ball is located at the bottom of the gyro ball. Specifically, place the gyro ball in fluorochloro-oil and turn it over 90 degrees. Since the center of gravity is located at the bottom of the gyro ball, the gyro ball will slowly return. The longer the return time, the closer the center of gravity is to the center of the ball. Control the counterweight screw so that the return time exceeds a certain limit.

[0039] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A method for adjusting the static balance of a gyro ball, characterized in that: In the production of the shell of the gyro ball, at least three reference marks are evenly spaced at the same position along the rotation axis of the spherical surface, the gyro ball is immersed in fluorochlorofluoro oil, and the fluorochlorofluoro oil is heated to a preset temperature to suspend the gyro ball in the fluorochlorofluoro oil, and it is determined whether the multiple reference marks on the spherical surface are consistent with the height difference of the liquid level of the fluorochlorofluoro oil, and the counterweight screws and the buoyancy adjustment block on the gyro ball are adjusted according to the height difference between the reference marks and the liquid level of the fluorochlorofluoro oil until the multiple reference marks are consistent with the height difference of the liquid level of the fluorochlorofluoro oil.

2. The method for adjusting the static balance of a gyro ball according to claim 1, characterized in that: A sealable box structure is used to contain the fluorochloro oil, and after the fluorochloro oil is heated to a preset temperature, a vacuum machine is used to evacuate the inside of the sealed box structure.

3. The method for adjusting the static balance of a gyro ball according to claim 1 or 2, characterized in that: Before suspending the gyro ball in the fluorocarbon oil, adjust the weight screw so that the reference mark faces upward when the gyro ball is placed in the fluorocarbon oil.

4. The method for adjusting the static balance of a gyro ball according to claim 1 or 2, characterized in that: When heating fluorochlorofluroic oil, water bath heating is adopted.

5. A device for adjusting the static balance of a gyro ball, characterized in that: The invention comprises a container box for containing fluorochlorofluoro oil, the container box comprises a box body and a cover body for being assembled together, the box body and the cover body are sealed and matched, the box body and / or the cover body are provided with an observation structure for observing the inside of the box body, the cover body is also provided with an exhaust hole, the exhaust hole is provided with a one-way valve for gas to flow from the inside of the container box to the outside of the container box, and the cover body is also provided with a barometer for detecting the air pressure in the container box.

6. The device for adjusting the static balance of a gyro ball according to claim 5, characterized in that: The cover body is a transparent cover body, and an annular groove is arranged on the end surface of the box body that contacts the cover body, and an extrusion sealing ring is arranged in the annular groove.

7. The device for adjusting the static balance of a gyro ball according to claim 5 or 6, characterized in that: The adjusting device for the static balance of the gyro ball also includes a water bath box, in which the container box is placed so as to perform water bath heating on the container box when hot water is filled into the water bath box.

8. The device for adjusting the static balance of a gyro ball according to claim 7, characterized in that: The box body is provided with an outward turning edge, and the top of the water bath box is provided with a placement hole for the box body to be placed. The outer edge of the placement hole is used to cooperate with the outward turning edge stopper on the box body so that the bottom of the box body is spaced apart from the inner bottom wall of the water bath box.

9. The device for adjusting the static balance of a gyro ball according to claim 7, characterized in that: The water bath is provided with a water thermometer for measuring the water temperature of the water in the water bath.

10. The device for adjusting the static balance of a gyro ball according to claim 5 or 6, characterized in that: The box body is made of non-magnetic metal material.

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