CN210400404U - Compass suitable for global observation azimuth - Google Patents
Compass suitable for global observation azimuth Download PDFInfo
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- CN210400404U CN210400404U CN201921058862.4U CN201921058862U CN210400404U CN 210400404 U CN210400404 U CN 210400404U CN 201921058862 U CN201921058862 U CN 201921058862U CN 210400404 U CN210400404 U CN 210400404U
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Abstract
The utility model provides a compass suitable for global observation orientation, which comprises a compass cover, a pitching pendulum and a compass bottom, wherein the pitching pendulum is arranged on the compass bottom, and a positioning jewel bearing is arranged at the middle corresponding position of the compass cover and the compass bottom; the compass further comprises a magnetic needle group, two ends of the magnetic needle group are respectively arranged in the positioning jewel bearing, the magnetic needle group is always parallel to the inner surfaces of the compass cover and the compass bottom, and can freely rotate in the positioning jewel bearing along the horizontal direction. The utility model provides an among the compass, the magnetic needle group can be in location precious stone bearing along the horizontal direction free rotation, and remain parallel with the internal surface at the bottom of compass lid, the compass all the time, need not carry out weight balance according to different regional magnetic dip angles to the magnetic needle and predetermine, has effectively overcome the influence at magnetic dip angle, is applicable to the global and carries out the position observation, conveniently strides latitude user's operation.
Description
Technical Field
The utility model relates to a geography professional instrument technical field especially relates to a compass suitable for global observation position.
Background
A compass is a device for observing an azimuth provided on a compass. The existing compass generally comprises a magnetic needle, a shaft tip, a compass cover, a compass bottom and the like, wherein the magnetic needle is placed on the shaft tip, can freely rotate under the action of a natural geomagnetic field and is kept in the tangential direction of a magnetic meridian, the north pole of the magnetic needle points to the north pole of geography (namely the south pole of the geomagnetism) when the compass is static, and the south pole of the magnetic needle points to the south pole of the geography (namely the north pole of the geomagnetism), and the direction can be identified by utilizing the performance so as to measure the azimuth angle.
However, because the two ends of the magnetic needle are attracted by different earth magnetic poles, the magnetic needle cannot be kept horizontal when the magnetic needle is at rest, and the magnetic needle and the horizontal direction form an included angle which is called a magnetic inclination angle. The declination angle varies with the latitude of the location of the magnetic needle, and varies from 0 ° to 90 ° and from 0 ° to-90 ° at various locations on the earth. In order to eliminate the influence of a magnetic inclination angle and enable a magnetic needle placed on a shaft tip to be in a balanced state in a horizontal plane so as to keep the magnetic needle rotating in the horizontal plane to flexibly indicate the azimuth, in the prior art, the whole world is divided into 5 areas according to different magnetic inclination angles, weight balance presetting is respectively carried out on the magnetic needle in a compass, namely copper wires are wound at the south end or the north end of the magnetic needle or tin blocks are welded for balance calibration, and the magnetic needle is enabled to be basically parallel to the upper inner surface and the lower inner surface of a compass box in the horizontal plane and to be in the balanced state. However, when the compass is used across areas, the two ends of the magnetic needle placed on the shaft tip are subjected to different gravity strengths of earth magnetic poles in different areas, the preset state of the original weight balance of the magnetic needle is damaged, the upper inner surface and the lower inner surface of the compass box are not in a parallel state in a horizontal plane, the north end (or the south end) of the magnetic needle naturally upwarps and butts against the inner surface of the bottom surface (or the upper surface) of the compass box, and the rotation of the magnetic needle is inflexible, so that the azimuth observation is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a compass suitable for global observation position to solve among the prior art compass magnetic needle can't be in balanced state, rotate inflexible technical problem under the influence of magnetic inclination.
In order to solve the technical problem, the utility model discloses take following technical scheme:
a compass suitable for global observation of azimuth comprises a compass cover, a pitching pendulum and a compass bottom, wherein the pitching pendulum is arranged on the compass bottom, and a positioning jewel bearing is arranged at the corresponding position of the middle parts of the compass cover and the compass bottom; the compass further comprises a magnetic needle group, wherein two ends of the magnetic needle group are respectively arranged in the positioning jewel bearing and can freely rotate in the positioning jewel bearing along the horizontal direction.
Preferably, the material of the positioning jewel bearing is diamond or agate.
Preferably, the contact surfaces of the positioning jewel bearing and the two ends of the magnetic needle group are in a hemispherical shape. The utility model discloses a location jewel bearing adopts the diamond material to polish its inner surface into the spherical shape, be favorable to reducing the resistance that produces between the contact surface of magnetic needle group when location jewel bearing internal rotation, make the magnetic needle rotate accurately directional in the same direction as smooth.
More preferably, the diameter of the outer circle of the positioning jewel bearing is 1-4 mm, and the coaxiality of the outer circle of the positioning jewel bearing and the bearing groove is less than or equal to 0.02 mm.
Preferably, the magnetic needle group comprises a magnetic needle, a mandrel and a limit bearing; the magnetic needle is fixedly arranged on the limiting bearing, and the mandrel is fixedly arranged in the limiting bearing; the magnetic needle group is rotationally connected with the positioning jewel bearing through the mandrel.
Preferably, the material of the mandrel is a cobalt 40 alloy material, and both ends of the mandrel are in a ball-head conical shape; the limiting bearing is made of diamond. The utility model adopts the mandrel to replace the traditional shaft tip, and simultaneously, the mandrel adopts cobalt 40 alloy material, so that the hardness and the wear resistance are good, the service life can be prolonged, the two ends of the mandrel are polished into a ball head cone shape, and the friction resistance generated between the contact surfaces when the magnetic needle group rotates in the positioning jewel bearing is further reduced; in addition, the limiting bearing is made of diamond materials and is hard and durable.
Preferably, the compass further comprises a magnetic declination angle adjusting mechanism, and the magnetic declination angle adjusting mechanism is fixedly arranged at the bottom of the compass bottom.
Preferably, the magnetic declination adjusting mechanism comprises a magnetic declination adjusting plate, a gear cover plate and an adjusting gear; the magnetic declination adjusting plate is fixedly arranged on a central shaft at the bottom of the compass, the gear cover plate is fixedly arranged at the bottom of the compass, and the adjusting gear is arranged in a positioning hole of the gear cover plate.
Preferably, the compass cover is further provided with a sealing taper pin for sealing an oil hole on the compass cover.
The utility model provides an above-mentioned assembling method suitable for compass of global observation position, including following step:
s1, injection molding: the positioning jewel bearing is arranged in the central limiting hole of the injection mould of the compass cover and the compass bottom, the compass cover and the positioning jewel bearing are respectively molded into a whole, and the compass bottom and the positioning jewel bearing are molded into a whole;
s2, assembling a magnetic needle group: firstly, pressing a limit bearing into a mandrel, and then fixedly arranging a magnetic needle on the limit bearing;
s3, assembling a compass cover and a compass bottom: placing two ends of the magnetic needle group assembled in the step S2 in positioning jewel bearings respectively, and bonding the compass cover and the compass bottom by using an adhesive;
s4, oil injection and sealing: injecting aviation kerosene damping liquid into the compass through an oil injection hole in the compass cover in a vacuum oil injection mode, and then sealing the oil injection hole in the compass cover by using a sealing taper pin;
s5, assembling a magnetic declination angle adjusting mechanism: fixing the magnetic declination adjusting plate on a central shaft at the bottom of the compass bottom, then placing the adjusting gear in a positioning hole of the gear cover plate, and finally adopting an adhesive to bond the gear cover plate and the compass bottom.
The utility model provides a compass suitable for global observation position's beneficial effect lies in:
the utility model provides an among the compass, inlay the magnetism needle is fixed on the spacing bearing that has the mandrel, set up the mandrel both ends in location jewel bearing again for the magnetism needle is in balanced state all the time when static in the horizontal plane, and with the internal surface at the bottom of compass lid, the compass remain parallel all the time, need not carry out weight balance according to different regional magnetic inclination to the magnetism needle and predetermine, effectively overcome the influence at magnetic inclination, be applicable to the global position observation that carries on, conveniently stride latitude user's operation.
The utility model provides a location precious stone bearing adopts the diamond in the compass to wear into the sphere with diamond's internal surface, the frictional resistance that produces between the contact surface when effectively reducing the rotation for the magnetism needle rotates along with the mandrel is nimble in location precious stone bearing, avoids appearing shake and slope, and the magnetism needle is accurate directional under the inclination of difference, is adapted to and carries out the position under the optional state and observes.
The utility model provides a compass has still set up magnetic declination adjustment mechanism bottom the compass, can calibrate local magnetic declination, reduces azimuth measurement error, and the position is surveyd and interpreted to the accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a compass structure suitable for global observation of azimuth in the embodiment of the present invention.
Fig. 2 is a schematic view of a local structure of a compass suitable for global observation of azimuth in the embodiment of the present invention.
The device comprises a 1-compass cover, a 2-pitching pendulum, a 3-compass bottom, a 4-positioning jewel bearing, a 5-magnetic needle group, a 51-magnetic needle, a 52-mandrel, a 53-limiting bearing, a 6-magnetic declination adjusting mechanism, a 61-magnetic declination adjusting plate, a 62-gear cover plate, a 63-adjusting gear and a 7-sealing taper pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention provides a compass suitable for global azimuth observation, including a compass cover 1, a pitching pendulum 2 and a compass bottom 3, wherein the pitching pendulum 2 is disposed on the compass bottom 3, and a positioning jewel bearing 4 is disposed at a corresponding position between the compass cover 1 and the compass bottom 3; the compass further comprises a magnetic needle group 5, two ends of the magnetic needle group 5 are respectively arranged in the positioning jewel bearing 4, the magnetic needle group 5 is always parallel to the inner surfaces of the compass cover 1 and the compass bottom 3, and can rotate in the positioning jewel bearing 4 along the horizontal direction.
In this embodiment, the utility model provides an among the compass, magnetic needle group 5 can follow horizontal direction free rotation in location precious stone bearing 4, and all the time with compass lid 1, the internal surface at the bottom of the compass 3 keep parallel, need not carry out weight balance according to different regional magnetic inclination to the magnetic needle and predetermine, has effectively overcome the influence at magnetic inclination, is applicable to the global and carries out the azimuth observation, conveniently strides latitude user's operation.
In an embodiment of the present invention, the material of the positioning jewel bearing 4 may be diamond or agate.
In a preferable scheme of the above embodiment, the contact surfaces of the positioning jewel bearing 4 and the two ends of the magnetic needle group are in a hemispherical shape.
In a preferred scheme of the above embodiment, the diameter of the outer circle of the positioning jewel bearing is 2mm, and the coaxiality of the outer circle of the positioning jewel bearing and the bearing groove is less than or equal to 0.02 mm.
It should be noted that the utility model discloses a location jewel bearing 4 adopts wear-resisting, the little material of frictional resistance, and location jewel bearing 4 in this embodiment is preferred diamond material to polish its inner surface into the spherical, the frictional resistance who produces between the contact surface when effectively reducing the rotation for the magnetism needle rotates in the flexibility of location jewel bearing 4 along with mandrel 52, avoids appearing shake and slope, and the magnetism needle is accurate directional under the inclination of difference, is adapted to and carries out the position observation under the optional condition.
In a specific embodiment of the present invention, the magnetic needle set 5 includes a magnetic needle 51, a mandrel 52 and a limit bearing 53; the magnetic needle 51 is fixedly arranged on a limit bearing 53, and the mandrel 52 is fixedly arranged in the limit bearing 53; the magnetic needle set 5 is rotatably connected with the positioning jewel bearing 4 through a mandrel 52.
The utility model provides an among the compass, inlay magnetic needle 51 is fixed on the spacing bearing 53 that has mandrel 52, set up mandrel 52 both ends in location precious stone bearing 4 again, be in balanced state all the time when making magnetic needle 51 static in the horizontal plane, and with compass lid 1, the internal surface of compass end 3 remains the parallel all the time, need not carry out weight balance according to different regional magnetic inclination to magnetic needle 51 and predetermine, the influence at magnetic inclination has effectively been overcome, be applicable to the global and carry out the position observation, conveniently stride the operation of latitude user.
In a preferable scheme of the above embodiment, the material of the mandrel 52 is cobalt 40 alloy material, and both ends of the mandrel 52 are in a ball-end conical shape; the stop bearing 53 is made of diamond.
It should be noted that, the utility model discloses a mandrel 52 replaces traditional pivot point, and mandrel 52 adopts wear-resisting, frictional resistance is little simultaneously, and does not contain the alloy material of ferromagnetic substance, preferably cobalt 40 alloy material in the above-mentioned embodiment, and matter is hard wear-resisting, can increase of service life, polishes into the ball head taper shape with mandrel 52 both ends, has further reduced the frictional resistance that produces between the contact surface when magnetism needle group 5 rotates in location jewel bearing 4; in addition, the limit bearing 53 is made of non-fragile diamond materials and is hard and durable.
In another embodiment of the present invention, the compass further comprises a magnetic declination angle adjusting mechanism 6, and the magnetic declination angle adjusting mechanism 6 is fixedly arranged at the bottom of the compass bottom 3.
In a preferable mode of the above embodiment, the declination adjustment mechanism 6 includes a declination adjustment plate 61, a gear cover plate 62 and an adjustment gear 63; the magnetic declination adjusting plate 61 is fixedly arranged on the central shaft 52 at the bottom of the compass bottom 3, the gear cover plate 62 is fixedly arranged at the bottom of the compass bottom 3, and the adjusting gear 63 is arranged in a positioning hole of the gear cover plate 62.
It is required to explain, the utility model provides a compass sets up magnetic declination adjustment mechanism 6 in 3 bottoms at the bottom of the compass, can calibrate local magnetic seat declination, reduces azimuth measurement error, and the position is surveyed and interpreted to the accuracy.
Preferably, the compass cover 1 is further provided with a sealing taper pin 7 for sealing an oil hole on the compass cover 1.
The embodiment of the utility model provides an above-mentioned compass's assembly method suitable for global observation position is still provided, including following step:
s1, injection molding: the positioning jewel bearing 4 is arranged in the central limiting hole of the injection mould of the compass cover 1 and the compass bottom 3, the compass cover 1 and the positioning jewel bearing 4 are respectively molded into a whole, and the compass bottom 3 and the positioning jewel bearing 4 are molded into a whole;
s2, assembling a magnetic needle group 5: firstly, pressing a limit bearing 53 onto a mandrel 52, and then fixedly arranging a magnetic needle on the limit bearing 53;
s3, assembling a compass cover 1 and a compass bottom 3: placing two ends of the magnetic needle group 5 assembled in the step S2 in the positioning jewel bearing 4 respectively, and bonding the compass cover 1 and the compass bottom 3 by using No. 3 glue;
s4, oil injection and sealing: injecting aviation kerosene damping liquid into the compass through an oil injection hole in the compass cover 1 in a vacuum oil injection mode, and then sealing the oil injection hole in the compass cover 1 by using a sealing taper pin 7;
s5, assembling a magnetic declination angle adjusting mechanism 6: fixing the magnetic declination adjusting plate 61 on the bottom central shaft 52 of the compass bottom 3, then placing the adjusting gear 63 in the positioning hole of the gear cover plate 62, and finally adopting 3# adhesive to bond the gear cover plate 62 and the compass bottom 3.
The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.
Claims (9)
1. A compass suitable for global observation of azimuth comprises a compass cover, a pitching pendulum and a compass bottom, and is characterized in that the pitching pendulum is arranged on the compass bottom, and a positioning jewel bearing is arranged at the corresponding position of the middle parts of the compass cover and the compass bottom; the compass further comprises a magnetic needle group, two ends of the magnetic needle group are respectively arranged in the positioning jewel bearing, the magnetic needle group is always parallel to the inner surfaces of the compass cover and the compass bottom, and can rotate in the positioning jewel bearing along the horizontal direction.
2. The compass of claim 1, wherein the material of the locating jewel bearing is diamond or agate.
3. The compass of claim 2, wherein the locating jewel bearings are hemispherical in shape in contact with the two ends of the magnetic needle set.
4. The compass according to claim 3, wherein the diameter of the outer circle of the positioning jewel bearing is 1-4 mm, and the coaxiality of the outer circle of the positioning jewel bearing and the bearing groove is less than or equal to 0.02 mm.
5. The compass of claim 1, wherein the set of magnetic needles comprises magnetic needles, a spindle, and a limit bearing; the magnetic needle is fixedly arranged on the limiting bearing, and the mandrel is fixedly arranged in the limiting bearing; the magnetic needle group is rotationally connected with the positioning jewel bearing through the mandrel.
6. The compass of claim 5, wherein the mandrel is made of cobalt 40 alloy material, and both ends of the mandrel are in a ball-end conical shape; the limiting bearing is made of diamond.
7. The compass of claim 1, further comprising a declination adjustment mechanism fixedly disposed at a bottom of the compass bottom.
8. The compass of claim 7, wherein the declination adjustment mechanism comprises a declination adjustment plate, a gear cover plate, and an adjustment gear; the magnetic declination adjusting plate is fixedly arranged on a central shaft at the bottom of the compass, the gear cover plate is fixedly arranged at the bottom of the compass, and the adjusting gear is arranged in a positioning hole of the gear cover plate.
9. The compass of claim 1, wherein the compass cover is further provided with a sealing taper pin for sealing an oil hole on the compass cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921058862.4U CN210400404U (en) | 2019-07-08 | 2019-07-08 | Compass suitable for global observation azimuth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921058862.4U CN210400404U (en) | 2019-07-08 | 2019-07-08 | Compass suitable for global observation azimuth |
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| Publication Number | Publication Date |
|---|---|
| CN210400404U true CN210400404U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921058862.4U Active CN210400404U (en) | 2019-07-08 | 2019-07-08 | Compass suitable for global observation azimuth |
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| CN (1) | CN210400404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360993A (en) * | 2019-07-08 | 2019-10-22 | 中良科技集团有限公司 | A kind of compass and its assemble method suitable for global observation orientation |
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2019
- 2019-07-08 CN CN201921058862.4U patent/CN210400404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360993A (en) * | 2019-07-08 | 2019-10-22 | 中良科技集团有限公司 | A kind of compass and its assemble method suitable for global observation orientation |
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