CN220865673U - Coaxial double-rotor helicopter blade shimmy angle measuring device - Google Patents
Coaxial double-rotor helicopter blade shimmy angle measuring device Download PDFInfo
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- CN220865673U CN220865673U CN202322580479.8U CN202322580479U CN220865673U CN 220865673 U CN220865673 U CN 220865673U CN 202322580479 U CN202322580479 U CN 202322580479U CN 220865673 U CN220865673 U CN 220865673U
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- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to the technical field of helicopter blade shimmy angle measurement, and discloses a coaxial double-rotor helicopter blade shimmy angle measurement device which comprises a rotating shaft rod and a helicopter blade body fixedly mounted with the rotating shaft rod, wherein a mounting assembly is fixedly mounted on the outer wall surface of the rotating shaft rod and comprises two mounting semi-rings, connecting grooves and connecting inserts for fixing are formed in two ends of the two mounting semi-rings, movable clamping grooves are formed in the outer circular arc wall surfaces of the two mounting semi-rings, movable clamping blocks are fixedly mounted in the movable clamping grooves, and a measurement device body for measuring the shimmy angle of the helicopter blade body is fixedly mounted on the outer wall surface of the movable clamping blocks. According to the utility model, the mounting assembly is arranged, so that the convenience of dismounting the equipment is improved, the equipment is convenient to maintain and operate in the later period, the number of the measuring device bodies can be correspondingly adjusted according to the number of the helicopter blade bodies, and the applicability of the equipment is improved.
Description
Technical Field
The utility model relates to the technical field of helicopter blade shimmy angle measurement, in particular to a coaxial double-rotor helicopter blade shimmy angle measurement device.
Background
The helicopter has the characteristics of vertical take-off and landing and low-altitude hovering, and plays an indispensable role in military and civil aspects such as ground attack, battlefield rescue, air patrol, earthquake relief, geological exploration, forest protection and the like. At present, helicopters can be classified into single-rotor helicopter with tail rotor, coaxial double-rotor helicopter, tandem double-rotor helicopter, transverse double-rotor helicopter, etc. according to different rotor layout forms. The coaxial double-rotor helicopter has the advantages of compact structure, small outline size, high hovering efficiency, good operability, high speed and the like, so the coaxial double-rotor helicopter is an important direction of the development of modern helicopters. Such rotor steering mechanisms are overly complex, resulting in inconvenient installation of the measurement equipment on the rotor shaft.
For this purpose, we propose a coaxial double rotor helicopter blade lag angle measuring device.
Disclosure of utility model
The utility model mainly solves the technical problems in the prior art and provides a blade shimmy angle measuring device of a coaxial double-rotor helicopter.
In order to achieve the above purpose, the technical scheme is adopted by the utility model, the coaxial double-rotor helicopter blade shimmy angle measuring device comprises a rotating shaft rod and a helicopter blade body fixedly mounted with the rotating shaft rod, wherein the outer wall surface of the rotating shaft rod is fixedly provided with a mounting assembly, the mounting assembly comprises two mounting semi-rings, two ends of the two mounting semi-rings are respectively provided with a connecting groove and a connecting plug block for fixing, the outer arc wall surfaces of the two mounting semi-rings are respectively provided with a movable clamping groove, a movable clamping block is fixedly mounted in the movable clamping grooves, and the outer wall surface of the movable clamping block is fixedly provided with a measuring device body for measuring the shimmy angle of the helicopter blade body.
Further, two the installation semi-rings splice each other and are ring form and joint in the outer wall face of rotation axostylus axostyle corresponding position department, and the both ends of two installation semi-rings are connected through coupling groove and connection inserted block and are set up.
Further, the fixing nuts are fixedly sleeved on the upper side wall surface and the lower side wall surface of the connecting groove, the fixing through holes corresponding to the fixing nut positions are formed in the top wall surface of the connecting plug block in a penetrating mode, fixing bolts in a vertical state are arranged in the fixing nuts located at the upper positions in a threaded mode, and the bottom ends of the fixing bolts penetrate through the fixing through holes in the connecting plug block and are in threaded connection with the fixing nuts located at the lower positions.
Further, rubber pads are fixedly connected to the inner arc-shaped wall surfaces of the two mounting semi-rings.
Further, the section of the inner cavity of the movable clamping groove and the section of the movable clamping block are both T-shaped.
Further, the movable clamping block is arc-shaped and is in sliding connection inside the movable clamping groove, the two ends of the movable clamping block are all penetrated and provided with positioning threaded holes, positioning bolts in a horizontal state are arranged in the two positioning threaded holes in a threaded connection mode, and the end parts of the two positioning bolts are in jacking contact with the side wall corresponding positions of the inner cavity of the movable clamping groove.
Further, the measuring device body is fixedly connected with the movable clamping block at the middle position of one end far away from the installation semi-ring, and the measuring end on the measuring device body is arranged towards the position of the helicopter blade body.
Further, the side wall surface of the movable clamping groove is provided with an arc-shaped groove corresponding to the positioning threaded hole, and a rubber strip is fixedly connected inside the arc-shaped groove.
Advantageous effects
The utility model provides a coaxial double-rotor helicopter blade shimmy angle measuring device. The beneficial effects are as follows:
1. This coaxial two rotor helicopter blade shimmy angle measuring device, through setting up the installation component, during the use, pass through movable fixture block with the measuring device body and install the last activity draw-in groove fixed connection of semi-ring, two installation semi-rings pass through the connection recess and connect the inserted block concatenation into ring form and with the outer wall fixed connection of rotating the axostylus axostyle, slide inside the activity draw-in groove through movable fixture block, and then adjust measuring device body and helicopter blade body position alignment, screw up fixing bolt and positioning bolt, accomplish the installation to this equipment promptly, through reverse operation, can accomplish the demolish operation to this equipment, above easy operation is practical, improve the convenience of this equipment dismouting, and then be convenient for later maintenance operation to this equipment, and this equipment can carry out corresponding regulation to the quantity of measuring device body according to the quantity of helicopter blade body, and then improve the suitability of this equipment.
2. This coaxial two rotor helicopter paddle shimmy angle measuring device through setting up the rubber pad, and two rubber pads increase the connection between installation semi-ring and the rotation axostylus axostyle through taking place deformation, increase the stability of this equipment installation
3. This coaxial two rotor helicopter paddle shimmy angle measuring device through setting up the rubber strip, when movable fixture block passes through positioning bolt and the inside fixed of movable draw-in groove, and positioning bolt's tip roof pressure is on the inside rubber strip of arc recess, and the rubber strip is through taking place the connection between deformation increase positioning bolt and the arc recess for movable fixture block is more firm to be installed inside the movable draw-in groove, improves the stability of this equipment structure.
Drawings
The structures, proportions, sizes, etc. shown in this description are for illustration purposes only and are not intended to limit the scope of the utility model, which is otherwise, used by those skilled in the art to which this utility model pertains.
FIG. 1 is a schematic diagram of a coaxial dual rotor helicopter blade lag angle measurement apparatus of the present utility model;
FIG. 2 is an exploded view of the coaxial dual rotor helicopter blade lag angle measurement apparatus of the present utility model;
FIG. 3 is an enlarged schematic view of FIG. 2A;
fig. 4 is an enlarged schematic view of B in fig. 2.
Legend description:
10. Rotating the shaft lever; 11. a helicopter blade body; 12. a mounting assembly; 13. mounting a semi-ring; 14. a connection groove; 15. connecting the plug blocks; 16. a fixing bolt; 17. a rubber pad; 18. a movable clamping groove; 19. a movable clamping block; 20. positioning the threaded hole; 21. a measuring device body; 22. positioning bolts; 23. an arc-shaped groove; 24. a rubber strip; 25. and (5) fixing a nut.
Detailed Description
1-4, Including rotating shaft 10 and helicopter blade body 11 fixed with rotating shaft 10, the outer wall surface of rotating shaft 10 is fixed with installation component 12, installation component 12 includes two installation semi-rings 13, two ends of two installation semi-rings 13 are equipped with connecting groove 14 and connecting insert 15 for fixing, two installation semi-rings 13 splice each other and are in ring shape and joint in the outer wall surface of rotating shaft 10 corresponding position, two ends of two installation semi-rings 13 are connected through connecting groove 14 and connecting insert 15, upper and lower side wall surfaces of connecting groove 14 are fixed and sleeved with fixing nut 25, the top wall surface of connecting insert 15 is penetrated and provided with fixing through hole corresponding to the position of fixing nut 25, fixing nut 25 at upper position is internally screwed with fixing bolt 16 in vertical state, the bottom ends of the fixing bolts 16 penetrate through the fixing through holes on the connecting plug blocks 15 and are in threaded connection with the fixing nuts 25 positioned at the lower positions, rubber gaskets 17 are fixedly connected to the inner arc wall surfaces of the two mounting semi-rings 13, movable clamping grooves 18 are formed in the outer arc wall surfaces of the two mounting semi-rings 13, movable clamping blocks 19 are fixedly arranged in the movable clamping grooves 18, the inner cavity sections of the movable clamping grooves 18 and the sections of the movable clamping blocks 19 are T-shaped, the outer wall surfaces of the movable clamping blocks 19 are fixedly provided with measuring device bodies 21 for measuring the effect of the shimmy angle of the helicopter blade body 11, the measuring device bodies 21 shoot the helicopter blade body 11 in a rotating state, image distortion is eliminated by calculating pixel equivalents, horizontal displacement of marking points is calculated in processed images, and the shimmy angle of the helicopter blade body 11 is calculated, this is the prior art, and not described in detail, the movable clamping block 19 is arc-shaped and slidingly connected inside the movable clamping groove 18, two ends of the movable clamping block 19 are all provided with positioning threaded holes 20 in a penetrating way, two positioning threaded holes 20 are provided with positioning bolts 22 in a horizontal state in a threaded way, the ends of the two positioning bolts 22 are in pressing contact with the corresponding positions of the side wall surfaces of the inner cavity of the movable clamping groove 18, the side wall surface of the movable clamping groove 18 is provided with an arc-shaped groove 23 corresponding to the positioning threaded holes 20, and a rubber strip 24 is fixedly connected inside the arc-shaped groove 23.
The working principle of the utility model is as follows: when the device is used, the measuring device body 21 is fixedly connected with the movable clamping groove 18 on the mounting semi-ring 13 through the movable clamping block 19, then the two mounting semi-rings 13 are spliced into a ring shape through the connecting groove 14 and the connecting insertion block 15 and are fixedly connected with the outer wall surface of the rotating shaft rod 10, the movable clamping block 19 slides in the movable clamping groove 18, the position alignment of the measuring device body 21 and the helicopter blade body 11 is regulated, the fixing bolt 16 and the positioning bolt 22 are screwed, the device is installed, the dismantling operation of the device can be completed through reverse operation, the operation is simple and practical, the convenience of the device disassembly is improved, the device is convenient to maintain in the later stage, the number of the measuring device body 21 can be correspondingly regulated according to the number of the helicopter blade bodies 11, and the applicability of the device is improved; the two rubber pads 17 increase the connection between the mounting half ring 13 and the rotating shaft lever 10 by deforming, thus increasing the stability of the installation of the device; when the movable clamping block 19 is fixed inside the movable clamping groove 18 through the positioning bolt 22, the end part of the positioning bolt 22 is propped against the rubber strip 24 inside the arc-shaped groove 23, and the rubber strip 24 is connected between the positioning bolt 22 and the arc-shaped groove 23 by deformation, so that the movable clamping block 19 is more stably arranged inside the movable clamping groove 18, and the stability of the equipment structure is improved.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (7)
1. The utility model provides a coaxial double rotor helicopter blade shimmy angle measuring device, includes rotation axostylus axostyle (10) and with rotation axostylus axostyle (10) fixed mounting's helicopter blade body (11), its characterized in that: the outer wall surface fixed mounting who rotates axostylus axostyle (10) has installation component (12), installation component (12) are including two installation semi-rings (13), the both ends of two installation semi-rings (13) all are provided with connecting groove (14) and connection inserted block (15) that are used for the fixed effect, activity draw-in groove (18) have all been seted up to the outside circular arc wall surface of two installation semi-rings (13), activity draw-in groove (18) internally mounted has movable fixture block (19), the outer wall surface fixed mounting of activity fixture block (19) has measuring device body (21) that are used for measuring helicopter paddle body (11) shimmy angle effect.
2. The coaxial dual rotor helicopter blade lag angle measurement apparatus of claim 1 wherein: the two mounting semi-rings (13) are spliced with each other to form a ring shape and are clamped at the corresponding positions of the outer wall of the rotating shaft rod (10), and two ends of the two mounting semi-rings (13) are connected with the connecting plug blocks (15) through the connecting grooves (14).
3. The coaxial dual rotor helicopter blade lag angle measurement apparatus of claim 1 wherein: fixing nuts (25) are fixedly sleeved on the upper side wall surface and the lower side wall surface of the connecting groove (14), fixing through holes corresponding to the positions of the fixing nuts (25) are formed in the top wall surface of the connecting plug block (15) in a penetrating mode, fixing bolts (16) in a vertical state are arranged in the fixing nuts (25) located at the upper positions in a threaded mode, and the bottoms of the fixing bolts (16) penetrate through the fixing through holes in the connecting plug block (15) and are in threaded mode with the fixing nuts (25) located at the lower positions.
4. The coaxial dual rotor helicopter blade lag angle measurement apparatus of claim 1 wherein: rubber pads (17) are fixedly connected to the inner arc-shaped wall surfaces of the two mounting semi-rings (13).
5. The coaxial dual rotor helicopter blade lag angle measurement apparatus of claim 1 wherein: the cross section of the inner cavity of the movable clamping groove (18) and the cross section of the movable clamping block (19) are T-shaped.
6. The coaxial dual rotor helicopter blade lag angle measurement apparatus of claim 1 wherein: the movable clamping block (19) is arc-shaped and is in sliding connection inside the movable clamping groove (18), positioning threaded holes (20) are formed in two ends of the movable clamping block (19) in a penetrating mode, positioning bolts (22) in a horizontal state are arranged in the two positioning threaded holes (20) in a threaded mode, and the end portions of the two positioning bolts (22) are in pressing contact with corresponding positions of the inner cavity side walls of the movable clamping groove (18).
7. The coaxial dual rotor helicopter blade lag angle measurement apparatus of claim 6 wherein: an arc-shaped groove (23) corresponding to the positioning threaded hole (20) is formed in the side wall surface of the movable clamping groove (18), and a rubber strip (24) is fixedly connected inside the arc-shaped groove (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322580479.8U CN220865673U (en) | 2023-09-22 | 2023-09-22 | Coaxial double-rotor helicopter blade shimmy angle measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322580479.8U CN220865673U (en) | 2023-09-22 | 2023-09-22 | Coaxial double-rotor helicopter blade shimmy angle measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220865673U true CN220865673U (en) | 2024-04-30 |
Family
ID=90815649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322580479.8U Active CN220865673U (en) | 2023-09-22 | 2023-09-22 | Coaxial double-rotor helicopter blade shimmy angle measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220865673U (en) |
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2023
- 2023-09-22 CN CN202322580479.8U patent/CN220865673U/en active Active
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