CN214748021U - Rotary platform for helicopter compass field calibration - Google Patents
Rotary platform for helicopter compass field calibration Download PDFInfo
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- CN214748021U CN214748021U CN202120190521.3U CN202120190521U CN214748021U CN 214748021 U CN214748021 U CN 214748021U CN 202120190521 U CN202120190521 U CN 202120190521U CN 214748021 U CN214748021 U CN 214748021U
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- helicopter
- rotary
- rotary platform
- compass
- fixed seat
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Abstract
The utility model provides a rotary platform for helicopter school compass field relates to compass calibration technical field. A rotary platform for a helicopter compass field comprises a fixed seat and a rotary disc rotatably arranged on the fixed seat. Adopt the utility model discloses, rotary platform can remove and carry, and the helicopter of being convenient for rotates and carries out the calibration operation.
Description
Technical Field
The utility model relates to a compass calibration technical field particularly, relates to a rotary platform for helicopter school compass field.
Background
Currently, the main navigation system of a helicopter is an inertial navigation and integrated navigation system, and a magnetic compass is used as a component of the integrated navigation system to play a role in backing up an instrument. The radio navigation system is mainly a navigation instrument used when a helicopter lands at an airport. The calibration of the magnetic compass and the radio compass is a basic work for the maintenance of the helicopter.
At present, the calibration operation of the magnetic compass and the radio compass is usually carried out by depending on a fixed compass field. The technical principle of compass calibration is as follows: the accurate azimuth angles of the helicopter in different directions are given by the technical means, the accurate azimuth angles are compared with azimuth angle data measured by the onboard compass, measuring errors of the onboard compass in different directions are obtained, and the compass errors are eliminated or adjusted to a reasonable interval by a standardized calibration method according to the error data. The nature of the compass field is technically that it provides an accurate azimuth angle for the helicopter.
Therefore, a fixed compass field is required to be relied on during calibration, calibration cannot be realized under the condition of no reliance, and particularly, the calibration device does not meet the actual application requirements in the field and needs highly motorized compass calibration equipment in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rotary platform for helicopter school compass field, it can remove and carry, and the helicopter of being convenient for rotates and calibrates the operation.
The embodiment of the utility model is realized like this:
the embodiment of the application provides a rotary platform for helicopter compass field, including the fixing base and the gyration dish of locating above-mentioned fixing base with rotating.
Further, in some embodiments of the present invention, the upper sidewall of the rotary plate is provided with a locking groove.
Further, in some embodiments of the present invention, the cross-section of the clip groove is an inverted trapezoid.
Further, in some embodiments of the present invention, the upper sidewall of the rotary plate located in the clamping groove is provided with anti-slip lines.
Further, in some embodiments of the present invention, the side wall of the rotary disk is provided with a through hole penetrating through the rotary disk, and the through hole is communicated with the joint groove and is disposed below the joint groove.
Further, in some embodiments of the present invention, the fixing seat is provided with a rotation hole penetrating through the fixing seat, and the rotation disc is disposed in the rotation hole and rotatably connected to the fixing seat.
Furthermore, in some embodiments of the present invention, a plurality of balls are disposed between the rotary disc and the fixing seat; a first sliding groove is formed in the inner side wall of the fixed seat along the circumferential direction of the rotary hole, and a second sliding groove is formed in the outer side wall of the rotary disc in the circumferential direction; one end of any ball is embedded into the first sliding groove, and the other end of any ball is embedded into the second sliding groove.
Further, in some embodiments of the present invention, the ball is made of a ceramic material.
Further, in some embodiments of the present invention, the bottom of the rotating plate is higher than the bottom of the fixing base.
Further, in some embodiments of the present invention, the thickness of the rotary platform is 2-4 cm.
Compared with the prior art, the embodiment of the utility model provides a have following advantage or beneficial effect at least:
an embodiment of the utility model provides a rotary platform for helicopter school compass field, locate the gyration dish of above-mentioned fixing base including fixing base and rotation.
When the helicopter is actually used, after the initial magnetic azimuth angle of the helicopter is calibrated by using the laser theodolite compass, the rotary platform can be placed on the ground, and the fixed seat is in contact with the ground and supports the rotary disk; and moving a main engine wheel of the helicopter to the central position of the rotary disk, and then pushing the helicopter to rotate around the rotary platform to obtain the measurement errors of the compass on the helicopter in different directions, so that the compass of the helicopter is calibrated.
The utility model provides a rotary platform can set to than the main engine wheel of helicopter can, be convenient for motorized removal with carry, the helicopter of being convenient for rotates and carries out the calibration operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a rotary platform according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a rotary platform according to an embodiment of the present invention.
Icon: 1-a rotary disc; 2-a fixed seat; 3-a clamping groove; 4-a through hole; 5-rotating the hole; 6-rolling balls.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that if the orientation or positional relationship indicated by the terms "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is conventionally placed when the utility model is used, it is only for convenience of description and simplification of the description, but it is not indicated or suggested that the device or element to be referred must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or vertical, but may be slightly inclined. Such as "horizontal" simply means that its orientation is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" means at least 2.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a rotary platform according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a rotary platform according to an embodiment of the present invention.
The embodiment provides a rotary platform for a helicopter compass field, which comprises a fixed seat 2 and a rotary disk 1 rotatably arranged on the fixed seat 2.
When the helicopter is actually used, after the initial magnetic azimuth angle of the helicopter is calibrated by using the laser theodolite compass, the rotary platform can be placed on the ground, and the fixed seat 2 is in contact with the ground and supports the rotary disk 1; the main wheel of the helicopter is moved to the central position of the rotary disk 1, then the helicopter is pushed to rotate around the rotary platform, the measurement errors of the compass on the helicopter in different directions are obtained, and the compass of the helicopter is calibrated.
The utility model provides a rotary platform can set to than the main engine wheel of helicopter can, be convenient for motorized removal with carry, the helicopter of being convenient for rotates and carries out the calibration operation.
Optionally, the revolving platform of the present embodiment is horizontally placed on the ground, and the revolving disc 1 rotates on the horizontal plane.
Because the compass needs to be calibrated so as to reduce the influence of an external magnetic conductive material on a magnetic field to improve the calibration precision, optionally, the rotating disc 1 and the fixing base 2 of the embodiment are made of a special austenitic stainless steel material, and the special austenitic stainless steel material is a high-strength corrosion-resistant magnetism-free special steel material which has high hardness, can support the helicopter, does not have magnetism, and improves the calibration precision.
As shown in fig. 1-2, in some embodiments of the present invention, the upper sidewall of the rotary plate 1 is provided with a locking groove 3.
The utility model discloses a top side wall of gyration dish 1 is equipped with joint groove 3, so can realize the joint fixed in the joint groove 3 with the host computer wheel removal of helicopter, prevent to rotate at the helicopter and carry out the host computer wheel of the in-process helicopter of calibration operation and remove on gyration dish 1, further improved the calibration accuracy.
In the current domestic heaviest helicopter, through pressure bearing analysis and multiple on-site measurements, under the condition that the tire pressure is normal and the inner and outer oil tanks are filled with oil, the length of the wheel contact surface is 45-50cm, so optionally, the opening length of the clamping groove 3 of the embodiment is more than 50cm, and through mechanical analysis, in order to meet the requirement of pressure bearing capacity, the outer diameter of the rotary platform is more than 65 cm.
As shown in fig. 1-2, in some embodiments of the present invention, the cross-section of the clip groove 3 is an inverted trapezoid.
The utility model discloses a set up the trapezoidal of cross-section for invering in joint groove 3, so move the back in joint groove 3 at the main engine wheel of helicopter, it is convenient for carry on spacingly to the main engine wheel both sides of helicopter to invert trapezoidal design, further prevents to rotate at the helicopter and moves on gyration dish 1 the main engine wheel of the in-process helicopter that carries out the calibration operation, has improved the calibration precision.
And through the trapezoidal design of inversion, the main engine wheel that enables the helicopter is close to ground as far as possible, reduces the degree of inclination of helicopter, and is more steady when making the helicopter rotate.
As shown in fig. 1-2, in some embodiments of the present invention, the upper sidewall of the rotary disk 1 located in the clamping groove 3 is provided with anti-slip lines.
The utility model discloses a be located the last lateral wall of the gyration dish 1 of joint groove 3 and be equipped with anti-skidding line, so increase the main wheel of helicopter and the frictional force between the last lateral wall of gyration dish 1, prevent that the main wheel of helicopter from sliding at the last lateral wall of gyration dish 1, further improved the calibration accuracy.
As shown in fig. 1-2, in some embodiments of the present invention, the side wall of the rotary disk 1 is provided with a through hole 4 penetrating through the rotary disk 1, and the through hole 4 is communicated with the engaging groove 3 and is disposed below the engaging groove 3.
The utility model discloses a lateral wall of gyration dish 1 is equipped with through-hole 4 that runs through above-mentioned gyration dish 1, and above-mentioned through-hole 4 communicates with above-mentioned joint groove 3 and locates the below in above-mentioned joint groove 3, is favorable to the exhibition of executing of machining technology on the one hand, and on the other hand also effectively alleviates rotary platform's weight.
As shown in fig. 1-2, in some embodiments of the present invention, the fixing base 2 is provided with a rotation hole 5 penetrating through the fixing base 2, and the rotation disc 1 is disposed in the rotation hole 5 and rotatably connected to the fixing base 2.
The utility model discloses a set up gyration hole 5, above-mentioned gyration hole 5 is located to above-mentioned gyration dish 1 and is connected with 2 rotations of above-mentioned fixing base, so be convenient for reduce rotary platform's height, enable the host computer wheel of helicopter and press close to ground as far as possible, reduce the slope degree of helicopter, more steady when making the helicopter rotate.
But also the rotating disc 1 can rotate along the fixed seat 2 conveniently. Optionally, the fixing base 2 of this embodiment is in a circular ring shape, and the rotating disc 1 and the fixing base 2 are coaxially arranged in the vertical direction.
As shown in fig. 1-2, in some embodiments of the present invention, a plurality of balls 6 are disposed between the rotary disc 1 and the fixed base 2; a first sliding groove is formed in the inner side wall of the fixed seat 2 along the circumferential direction of the rotary hole 5, and a second sliding groove is formed in the outer side wall of the rotary disc 1 along the circumferential direction; one end of any one of the balls 6 is fitted into the first slide groove, and the other end of any one of the balls 6 is fitted into the second slide groove.
The utility model is provided with a plurality of balls 6; a first sliding groove is formed in the inner side wall of the fixed seat 2 along the circumferential direction of the rotary hole 5, and a second sliding groove is formed in the outer side wall of the rotary disc 1 along the circumferential direction; one end of any one of the balls 6 is fitted into the first slide groove, and the other end of any one of the balls 6 is fitted into the second slide groove. So form the structure of plane thrust ball bearing between gyration dish 1, fixing base 2 and a plurality of ball 6, the rotation between gyration dish 1 and the fixing base 2 of being convenient for.
As shown in fig. 1-2, in some embodiments of the present invention, the ball 6 is made of a ceramic material.
Ceramic material makes 6 hardness of ball big, exempts from magnetism moreover, the utility model discloses a set up ball 6 and adopt ceramic material to make, its hardness reaches the requirement on the one hand, can bear the pressure of helicopter, and it has and exempts from magnetism moreover, has improved the calibration accuracy.
As shown in fig. 1-2, in some embodiments of the present invention, the bottom of the rotary plate 1 is higher than the bottom of the fixed base 2.
Rotary platform is at the work, and the direct load of gyration dish 1, gyration dish 1 must produce certain deformation because of receiving the holding down force, the utility model discloses a bottom that sets up gyration dish 1 is higher than the bottom of above-mentioned fixing base 2, so prevent 1 atress deformation of gyration dish and then touch to the earth the jamming.
Optionally, the bottom of the rotating disc 1 of the present embodiment is higher than the bottom of the fixed seat 2 by more than 3 mm.
As shown in fig. 1-2, in some embodiments of the present invention, the thickness of the rotary platform is 2-4 cm.
The utility model discloses a thickness that sets up rotary platform is 2-4cm, so reduces the focus deflection volume of helicopter, and the focus is steady when guaranteeing to use rotary platform, especially keeps steady through fixing base 2 and gyration dish 1 and then the focus before reaching joint groove 3 at the wheel.
To sum up, the embodiment of the utility model provides a rotary platform for helicopter school compass field, locate above-mentioned fixing base 2's gyration dish 1 including fixing base 2 and rotation.
When the helicopter is actually used, after the initial magnetic azimuth angle of the helicopter is calibrated by using the laser theodolite compass, the rotary platform can be placed on the ground, and the fixed seat 2 is in contact with the ground and supports the rotary disk 1; the main wheel of the helicopter is moved to the central position of the rotary disk 1, then the helicopter is pushed to rotate around the rotary platform, the measurement errors of the compass on the helicopter in different directions are obtained, and the compass of the helicopter is calibrated.
The utility model provides a rotary platform can set to than the main engine wheel of helicopter can, be convenient for motorized removal with carry, the helicopter of being convenient for rotates and carries out the calibration operation.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A rotary platform for helicopter compass field characterized in that: comprises a fixed seat and a rotary disc rotatably arranged on the fixed seat; the fixing base is provided with a rotary hole penetrating through the fixing base, and the rotary disc is arranged in the rotary hole and is rotatably connected with the fixing base.
2. A rotary platform for a helicopter compass field according to claim 1, wherein: the upper side wall of the rotary disc is provided with a clamping groove.
3. A rotary platform for a helicopter compass field according to claim 2, wherein: the section of the clamping groove is in an inverted trapezoid shape.
4. A rotary platform for a helicopter compass field according to claim 2, wherein: and the upper side wall of the rotary disc, which is positioned in the clamping groove, is provided with anti-skid grains.
5. A rotary platform for a helicopter compass field according to claim 2, wherein: the lateral wall of gyration dish is equipped with the through-hole that runs through the gyration dish, the through-hole with joint groove intercommunication is located the below in joint groove.
6. A rotary platform for a helicopter compass field according to claim 1, wherein: a plurality of balls are arranged between the rotary disc and the fixed seat; a first sliding groove is formed in the inner side wall of the fixed seat along the circumferential direction of the rotary hole, and a second sliding groove is formed in the outer side wall of the rotary disc in the circumferential direction; one end of any ball is embedded into the first sliding groove, and the other end of any ball is embedded into the second sliding groove.
7. A rotary platform for a helicopter compass field according to claim 6, wherein: the ball is made of ceramic materials.
8. A rotary platform for a helicopter compass field according to claim 1, wherein: the bottom of the rotary disc is higher than the bottom of the fixed seat.
9. A rotary platform for a helicopter compass field according to claim 1, wherein: the thickness of the rotary platform is 2-4 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120190521.3U CN214748021U (en) | 2021-01-21 | 2021-01-21 | Rotary platform for helicopter compass field calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120190521.3U CN214748021U (en) | 2021-01-21 | 2021-01-21 | Rotary platform for helicopter compass field calibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214748021U true CN214748021U (en) | 2021-11-16 |
Family
ID=78640968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120190521.3U Active CN214748021U (en) | 2021-01-21 | 2021-01-21 | Rotary platform for helicopter compass field calibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214748021U (en) |
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2021
- 2021-01-21 CN CN202120190521.3U patent/CN214748021U/en active Active
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