CN209192225U - A kind of viscoelastic shimmy-damper for unmanned helicopter rotor - Google Patents
A kind of viscoelastic shimmy-damper for unmanned helicopter rotor Download PDFInfo
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- CN209192225U CN209192225U CN201821996827.2U CN201821996827U CN209192225U CN 209192225 U CN209192225 U CN 209192225U CN 201821996827 U CN201821996827 U CN 201821996827U CN 209192225 U CN209192225 U CN 209192225U
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- shimmy
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- damper
- viscoelastic
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Abstract
The utility model relates to a kind of viscoelastic shimmy-dampers for unmanned helicopter rotor, including integrated rubber block is made by vulcanization, connecting tube and two pieces of connecting plates, connecting tube runs through rubber block along the vertical direction, connecting tube is respectively arranged on the left side and the right side wing plate and is in wing plate in rubber block, connecting plate is equipped with bolt hole and multiple fixation holes, the rear end side of connecting plate is equipped with perpendicular first partition, the rear end other side of connecting plate is equipped with extension board, the rear end of extension board is equipped with perpendicular second partition, two pieces of connecting plates correspond to the upper and lower sides in rubber block and are in its first partition and second partition in rubber block；First partition, second partition and wing plate are vertical with the axis of connecting plate along the longitudinal direction, and wing plate is between first partition and second partition.It has the advantages that of simple structure and low cost, deformability is strong, it is good to subtract pendulum effect.
Description
Technical field
The utility model relates to a kind of dampers, and in particular to a kind of viscoelastic shimmy-damper for unmanned helicopter rotor.
Background technique
When helicopter flight, the blade of rotor system can be generated in rotary course wave with it is shimmy.For blade
Shimmy vibration couple if not being controlled and being easy to generate with body movement, and then causes helicopter ground resonance and aerial total
Vibration, not only can be difficult to flight manipulation increase, results even in helicopter disintegration.For unmanned helicopter, because its lighter in weight,
Blade is shorter, and the mode of metal hinge commonly employed in the art connects blade with propeller hub.But the blade of unmanned helicopter is revolving
Shimmy vibration is equally existed during turning, and the damped coefficient of metal material is very small, metal hinge cannot provide abatement blade
The damping of shimmy needs increases the manipulation difficulty of unmanned helicopter, affects the safety of unmanned helicopter flight and reliable
Property.
Utility model content
The purpose of the utility model is to provide a kind of viscoelastic shimmy-dampers for unmanned helicopter rotor, with structure letter
Single, low in cost, deformability is strong, subtracts the good advantage of pendulum effect.
It is provided by the utility model a kind of for unmanned helicopter rotor to solve the above-mentioned problems in the prior art
Viscoelastic shimmy-damper, including by vulcanization integrated rubber block, connecting tube and two pieces of connecting plates are made, the connecting tube is vertically
Rubber block is run through in direction, and connecting tube is respectively arranged on the left side and the right side wing plate and is in wing plate in rubber block, the connecting plate
Middle part is equipped with bolt hole, and the first half of connecting plate is equipped with multiple fixation holes, and the rear end side of connecting plate is equipped with perpendicular the
One partition, the rear end other side of connecting plate are equipped with extension board, and the rear end of extension board is equipped with perpendicular second partition, two pieces of companies
Fishplate bar corresponds to the upper and lower sides in rubber block and is in its first partition and second partition in rubber block；First partition,
Two partitions and wing plate are vertical with the axis of connecting plate along the longitudinal direction, and make wing plate be in first partition and second partition it
Between.
Further, a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model, wherein described first every
The outside of plate is equipped with the first perpendicular side plate and makes the first side plate backwards；The outside of the second partition is equipped with perpendicular
The second side plate and keep the second side plate facing forward.
Further, a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model, wherein the connection
Plate, first partition, extension board, second partition, the first side plate and the second side plate are integrally machined production using metal plate.
Further, a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model, wherein the rubber block
Rear side in the middle part of be equipped with groove, the connecting tube is arranged in the groove of rubber block.
Further, a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model, wherein the connecting plate
First half be inverted triangular structure, connecting plate it is latter half of be trapezium structure.
Further, a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model, wherein the rubber block
It is made of silicon rubber.
Further, a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model, wherein the connecting tube
With wing plate using stainless steel, titanium alloy or aluminium alloy production.
Further, a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model, wherein the connection
Plate, first partition, extension board, second partition, the first side plate and the second side plate are using stainless steel, titanium alloy or aluminium alloy production.
A kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model compared with prior art, has following excellent
Point: the utility model by setting through vulcanization integrated rubber block, connecting tube and two pieces of connecting plates are made, allow connecting tube vertically
Rubber block is run through in direction, and wing plate is respectively set at left and right sides of connecting tube and is in wing plate in rubber block, in connecting plate
Bolt hole is arranged in middle part, multiple fixation holes is arranged in the first half of connecting plate, setting is perpendicular in the rear end side of connecting plate
First partition, connecting plate the rear end other side be arranged extension board, the rear end of extension board be arranged perpendicular second every
Plate allows two pieces of connecting plates to correspond to the upper and lower sides in rubber block and is in its first partition and second partition in rubber block；
Wherein, first partition, second partition and wing plate are vertical with the axis of connecting plate along the longitudinal direction, wing plate be in first partition and
Between second partition.Thus just constitute it is a kind of it is of simple structure and low cost, deformability is strong, to subtract pendulum effect good for nothing
The viscoelastic shimmy-damper of people's lifting airscrew.In practical applications, the utility model is allowed to pass through the paddle of connecting tube and unmanned helicopter
Hub connection, allows blade to be mounted between two pieces of connecting plates of the utility model and is fixed by bolt hole and fixation hole.Nobody is straight
It rises in machine flight course, blade lagging can be made to obtain rapid decay by the shear-compression deformation of rubber block, can effectively avoided
Air Resonance and ground resonance reduce manipulation difficulty, improve safety.The utility model is set by the two sides in connecting tube
Wing plate is set, and is correspondingly arranged first partition and second partition in the rear end sides of connecting plate, three layers are just formd in rubber block
Diaphragm structure, on the one hand enhances the deformability of shimmy-damper, on the other hand improves the structural stability of shimmy-damper, and can keep away
Exempt from hard collision generation impact occur.
The shown specific embodiment viscoelastic for unmanned helicopter rotor a kind of to the utility model with reference to the accompanying drawing
Shimmy-damper is described in further detail.
Detailed description of the invention
Fig. 1 is a kind of front view of the viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model；
Fig. 2 is a kind of top view of the viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model；
Fig. 3 is the A-A direction view in Fig. 1；
Fig. 4 is a kind of perspective view of the viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model；
Fig. 5 is the perspective view of connecting plate in a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model；
Fig. 6 is the perspective view of connecting tube in a kind of viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model.
Specific embodiment
Firstly the need of explanation, the nouns of locality such as upper and lower, front, rear, left and right described in the utility model are only according to attached
Scheme carry out description, in order to understand, not to the technical solution of the utility model and be claimed range progress limitation.
A kind of specific implementation of the viscoelastic shimmy-damper for unmanned helicopter rotor of the utility model as shown in Figures 1 to 6
Mode, including integrated rubber block 1, connecting tube 2 and two pieces of connecting plates 3 are made by vulcanization.Connecting tube 2 is allowed to pass through along the vertical direction
Rubber block 1 is worn, wing plate 21 is respectively set in the left and right sides of connecting tube 2 and is in wing plate 21 in rubber block 1.In connecting plate 3
Middle part bolt hole 31 is set, multiple fixation holes 32 are set in the first half of connecting plate 3, are arranged in the rear end side of connecting plate 3
Perpendicular first partition 33, connecting plate 3 the rear end other side be arranged extension board 34, extension board 34 rear end setting with
Its vertical second partition 35 allows two pieces of connecting plates 3 to correspond to the upper and lower sides in rubber block 1 and makes its first partition 33 and second
Partition 35 is in rubber block 1.Wherein, first partition 33, second partition 35 and wing plate 21 with connecting plate 3 along the longitudinal direction
Axis it is vertical, wing plate 21 is between first partition 33 and second partition 35.
Be arranged through the above structure just constitute it is a kind of it is of simple structure and low cost, deformability is strong, it is good to subtract pendulum effect
Viscoelastic shimmy-damper for unmanned helicopter rotor.In practical applications, the utility model is allowed to be gone straight up to by connecting tube 2 with nobody
The propeller hub of machine connects, and allows blade to be mounted between two pieces of connecting plates 3 of the utility model and by bolt hole 31 and fixation hole 32
It is fixed.During unmanned helicopter flight, blade lagging can be made to obtain rapid decay by the shear-compression deformation of rubber block 1,
Air Resonance and ground resonance can be effectively avoided, manipulation difficulty is reduced, improves safety.The utility model passes through even
Wing plate 21 is arranged in the two sides of adapter tube 2, is correspondingly arranged first partition 33 and second partition 35 in the rear end sides of connecting plate 3, and make
Two pieces of connecting plates 3 are oppositely arranged on 1 two sides of rubber block, and three layers of diaphragm structure are just formd in rubber block 1, are on the one hand enhanced
The deformability of shimmy-damper, on the other hand improves the structural stability of shimmy-damper, and is avoided that hard collision occur generates impact.
Our experiments show that the utility model can reach 80% or more to the isolation rate of small rank unmanned helicopter blade lagging.
As prioritization scheme, present embodiment is provided with the first perpendicular side plate in the outside of first partition 33
36 and make the first side plate 36 backwards；The second perpendicular side plate 37 is provided in the outside of the second partition 35 and makes second
Side plate 37 is facing forward.This structure setting increases shimmy-damper in the rigidity in blade lagging direction, on the one hand enhances shimmy-damper
Stability, is on the other hand conducive to blade lagging frequency and body intrinsic frequency is staggered to avoid resonance is generated, and enhances safety
Property.Meanwhile be to simplify structure and preparation process, enhancing structure intensity and globality, this specific implementation allow connecting plate 3, first every
Plate 33, extension board 34, second partition 35, the first side plate 36 and the second side plate 37 use metal plate and are integrally machined production.In addition, this
Specific embodiment makes connecting tube 2 that the recessed of rubber block 1 be arranged in by being provided with groove 11 in the middle part of the rear side of rubber block 1
In slot 11, enhances the deformability of shimmy-damper and subtract pendulum effect.
It should be noted that in practical applications, the utility model is logical to allow the first half of connecting plate 3 using up-side down triangle knot
Structure, and the latter half of of connecting plate 3 is allowed to use trapezium structure, to simplify structure and preparation process, and can preferably cooperate with blade.
And make connecting tube 2, wing plate 21, connecting plate 3, first partition 33, extension board 34, second partition 35, the first side plate 36 and second side
For plate 37 using stainless steel, titanium alloy or aluminium alloy production, to guarantee its structural strength, but it is not limited to this, can also use it
The metal material of his type, the technical purpose of same achievable the utility model.In addition, the utility model usually allows rubber block 1
Made of silicon rubber, with its abundant sharp high intensity, high resiliency, high-damping characteristic, enhance the Performance And Reliability of shimmy-damper,
But it is not limited to this, can also use other kinds of rubber material as needed.
Above embodiments are only the descriptions carried out to preferred embodiments of the present invention, are not asked to the utility model
Protection scope is asked to be defined, without departing from the design concept of the present utility model, those skilled in the art are according to this reality
The various forms of deformations made with novel technical solution should all fall into the protection that claims of the utility model determine
In range.
Claims (8)
1. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor, which is characterized in that including integrated rubber is made by vulcanization
Blob of viscose (1), connecting tube (2) and two pieces of connecting plates (3), the connecting tube (2) run through rubber block (1) along the vertical direction, connecting tube
(2) be respectively arranged on the left side and the right side wing plate (21) and be in wing plate (21) in rubber block (1), the middle part of the connecting plate (3)
Equipped with bolt hole (31), the first half of connecting plate (3) is equipped with multiple fixation holes (32), the rear end side of connecting plate (3) be equipped with
The rear end other side of its vertical first partition (33), connecting plate (3) is equipped with extension board (34), and the rear end of extension board (34) is equipped with
Perpendicular second partition (35), two pieces of connecting plates (3) correspond to the upper and lower sides in rubber block (1) and make its first partition
(33) it is in rubber block (1) with second partition (35)；First partition (33), second partition (35) and wing plate (21) and even
The axis of fishplate bar (3) along the longitudinal direction is vertical, and is in wing plate (21) between first partition (33) and second partition (35).
2. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor according to claim 1, which is characterized in that described
The outside of one partition (33) is equipped with perpendicular the first side plate (36) and makes the first side plate (36) backwards；The second partition
(35) outside is equipped with perpendicular the second side plate (37) and keeps the second side plate (37) facing forward.
3. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor according to claim 2, which is characterized in that the company
Fishplate bar (3), first partition (33), extension board (34), second partition (35), the first side plate (36) and the second side plate (37) use metal plate
Gold is integrally machined production.
4. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor according to claim 3, which is characterized in that the rubber
Groove (11) are equipped in the middle part of the rear side of blob of viscose (1), the connecting tube (2) is arranged in the groove (11) of rubber block (1).
5. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor according to claim 4, which is characterized in that the company
The first half of fishplate bar (3) is inverted triangular structure, and the latter half of of connecting plate (3) is trapezium structure.
6. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor according to claim 4, which is characterized in that the rubber
Blob of viscose (1) is made of silicon rubber.
7. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor according to claim 4, which is characterized in that the company
(2) and wing plate (21) are taken over using stainless steel, titanium alloy or aluminium alloy production.
8. a kind of viscoelastic shimmy-damper for unmanned helicopter rotor according to claim 4, which is characterized in that the company
Fishplate bar (3), first partition (33), extension board (34), second partition (35), the first side plate (36) and the second side plate (37) be not using
Rust steel, titanium alloy or aluminium alloy production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821996827.2U CN209192225U (en) | 2018-11-29 | 2018-11-29 | A kind of viscoelastic shimmy-damper for unmanned helicopter rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821996827.2U CN209192225U (en) | 2018-11-29 | 2018-11-29 | A kind of viscoelastic shimmy-damper for unmanned helicopter rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209192225U true CN209192225U (en) | 2019-08-02 |
Family
ID=67427106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821996827.2U Active CN209192225U (en) | 2018-11-29 | 2018-11-29 | A kind of viscoelastic shimmy-damper for unmanned helicopter rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209192225U (en) |
-
2018
- 2018-11-29 CN CN201821996827.2U patent/CN209192225U/en active Active
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