CN104880277B - A kind of main blade linking arm of testing stand - Google Patents
A kind of main blade linking arm of testing stand Download PDFInfo
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- CN104880277B CN104880277B CN201510249260.7A CN201510249260A CN104880277B CN 104880277 B CN104880277 B CN 104880277B CN 201510249260 A CN201510249260 A CN 201510249260A CN 104880277 B CN104880277 B CN 104880277B
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Abstract
The invention discloses a kind of testing stand with main blade linking arm, is divided into two parts：Linking arm (1) and blade mounting pin.Linking arm (1) is machined with propeller hub mounting hole, blade mounting hole and shimmy-damper mounting hole；Blade mounting pin includes axle (2), banking pin (201), brake block (202), spring (203), sliding block (204), safety pin (205).The present invention testing stand use main blade linking arm, by installing blade linking arm, new blade transition can be made to be installed into original propeller hub, it is not necessary to propeller hub is redesigned, save blade dynamic balance test stand rotor system reequip the time more than half.
Description
Technical field
The invention belongs to Helicopter Main blade to examine field, and in particular to a kind of main blade linking arm of testing stand.
Background technology
Main blade dynamic balance test stand is the test device for entering action balance inspection to Helicopter Main blade, itself and main blade
The part being attached is propeller hub, and the form of propeller hub joint determines the species of Helicopter Main blade.For main blade dynamic balancing
Test, is loaded, three blades are respectively standard blade, chaperonage blade and blade to be detected simultaneously using three blades.Often
It is secondary that only a piece of main blade is detected, by being contrasted to the measurement data of main blade to be measured with standard blade.And show
The helicopter in generation is generally all the main blade using more than 4.So when building main blade dynamic balance test stand, it is necessary to examination
The rotor system for testing platform installation is reequiped or redesigned, to adapt to the type of the model Helicopter Main blade.It is if straight
Connect using rotor system of the helicopter rotor system of other three blades of model as testing stand, the model lifting airscrew system
The joint form of the rotor hub of system is different from the joint form of main propeller shank to be measured, can not be mounted directly use, it is also desirable to
Propeller hub is designed.
Rotor system propeller hub one end is arranged in rotor shaft, is rotated with rotor shaft, and one end is used for installing main blade, band
Main blade is moved to be rotated.Main blade produces huge centrifugal force, centrifugation masterpiece of the propeller hub by blade during rotor wing rotation
With having very strict requirement to the stiffness and strength of propeller hub joint, redesigning joint form needs to carry out intensity and toughness examination
Test, whether detection tabs form can bear centrifugal force huge caused by main blade, and it is higher to take cost.
The content of the invention
It is most to manage that the helicopter rotor systems of a three rotors, which is chosen, as main blade dynamic balance test stand rotor system
The design thought, but the propeller hub for connecting rotor but needs to be modified, to be adapted to the joint form of newest main blade, together
When also need to calculate the rigidity of propeller hub, produce huge vibration etc. in order to avoid installing in new blade rotary course.Propeller hub is more
Changing needs to redesign joint form, while also needs to settle accounts the material of propeller hub and the stiffness and strength of joint form, work
Work amount is larger.
In order to avoid the change of propeller hub, when the intensity of former propeller hub meets new blade requirement, increase a linking arm and come in fact
The now connection of new blade and propeller hub.
Therefore, the invention provides a kind of blade linking arm, the connection for transition lifting airscrew head and new blade is pacified
Dress, and it is furnished with two blade mounting pins.
In view of the above mentioned problem of prior art, according to one side disclosed by the invention, the present invention uses following technology
Scheme：
The main blade linking arm of the testing stand of the present invention, is mainly used to the propeller hub helicopter rotor system of transition three and new blade
Connection installation, be divided into two parts：Linking arm (1) and blade mounting pin.
Linking arm (1) is formed by one piece of intermetallic composite coating, and one end of linking arm (1) is arranged on propeller hub, according to the oar of propeller hub
Leaf mounting hole processes the propeller hub mounting hole of an identical size on linking arm (1)；According to the size of blade mounting hole to be measured,
The blade mounting hole of two insertions is processed on the middle part of linking arm 1；According to the mounting hole size of shimmy-damper, in linking arm (1)
The other end processes the shimmy-damper mounting hole of an insertion.
Blade mounting pin is made up of 6 parts：Axle (2), banking pin (201), brake block (202), spring (203), sliding block
(204), safety pin (205), wherein banking pin (201), brake block (202), spring (203), sliding block (204), safety pin (205) are all pacified
On axle (2).
The main blade linking arm of the testing stand of the present invention, by installing blade linking arm, can be installed to new blade transition
Original propeller hub, it is not necessary to redesigned to propeller hub, save blade dynamic balance test stand rotor system repacking time half
More than.
Brief description of the drawings
Fig. 1 blade linking arm schematic diagrames
Fig. 2 linking arm front schematic views
Fig. 3 linking arm A-A sectional views
The schematic diagram of Fig. 4 Large linings 102
Fig. 5 blade mounting pin schematic diagrames
Fig. 6 axle schematic diagrames
Fig. 7 axle A-A sectional views
Fig. 8 banking pin schematic diagrames
Fig. 9 brake block schematic diagrames
Figure 10 spring schematic diagrames
Figure 11 slide block schematic diagrams
Figure 12 slide block Bs are to attempting
Figure 13 sliding block A-A sectional views
Wherein, it is entitled corresponding to the reference in accompanying drawing：
1- linking arms；2- axles；The small bushings of 101-；102- Large linings；201- banking pins；202- brake block；203- springs；
204- sliding blocks；205- safety pins.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
Such as Fig. 1-13 of the present invention, the main blade linking arm of testing stand of the invention, it is mainly used to the propeller hub of transition three and goes straight up to
The connection of machine rotor system and new blade is installed, and is divided into two parts：Linking arm (1) and blade mounting pin：
Linking arm (1) is formed by one piece of intermetallic composite coating, and one end of linking arm (1) is arranged on propeller hub, according to the oar of propeller hub
Leaf mounting hole processes the propeller hub mounting hole of an identical size on linking arm (1), in order to adapt to propeller hub installation, linking arm (1)
Two surface corners need to have a certain degree with linking arm (1) surface propeller hub mounting hole up and down；According to blade mounting hole to be measured
Size, the blade mounting holes of two insertions are processed on the middle part of linking arm 1, the size of blade mounting hole pacifies with blade to be measured
Fill hole size；According to the mounting hole size of shimmy-damper, the shimmy-damper installation of an insertion is processed in the other end of linking arm (1)
Hole, in order to adapt to shimmy-damper installation, two surface corners need and linking arm (1) table linking arm (1) shimmy-damper mounting hole up and down
Face has a certain degree；In order to ensure that linking arm (1) and the position of propeller hub installation place do not collide with propeller hub, and also to oar
The installation of blade root and shimmy-damper, six planes are processed into around linking arm (1) shimmy-damper mounting hole so that blade installation one
The corresponding plane in side；
According to the size of propeller hub mounting hole on linking arm (1), process two small bushing (101) using abrasive rubber material and pacify
Mounted in the both sides of linking arm (1) propeller hub mounting hole, abrasion when protection propeller hub relatively rotates with linking arm (1) to bearing pin, simultaneously
Fluid sealant is used at both cooperations；
According to the size of shimmy-damper mounting hole on linking arm (1), two metal Large linings (102), Large lining (102) are processed
Interior shaft size with shimmy-damper mounting hole size, Large lining (102) is installed on the inside of linking arm；
Blade mounting pin is made up of 6 parts：Axle (2), banking pin (201), brake block (202), spring (203), sliding block
(204), safety pin (205), wherein banking pin (201), brake block (202), spring (203), sliding block (204), safety pin (205) are all pacified
On axle (2)；
Axle (2) generally cylinder, in order to prevent blade mounting pin from being come off from the bottom of mounting hole, the top of axle (2)
Diameter is more bigger than body diameter to form a bayonet socket, while the part at top is cut away along the edge of cylinder, and formation one is convex
Platform, it is convenient to dismantle blade mounting pin；A groove is diametrically processed at the top of axle (2), is easily installed blade；Axle (2) is
The main body of blade mounting pin；The exhibition that spring (203) is along axle (2) with sliding block (204) adds to motion in the inside of axle (2)
The deep hole of work one, and processed outward with the diameter more than deep hole at deep hole half, form the deep hole of a stairstepping, rank
It is used to stop spring (203), the resilient support slided up and down by spring (203) of sliding block (204) at ladder；Banking pin (201) and
Brake block (202) all plays barrier effect；A cross through hole is processed in the bottom of axle (2) and carries convex rank, the same banking pin of diameter
(201) and brake block (202) size；Safety pin (205) is gone here and there in the through hole of axle (2) and sliding block (204), plays fixation；
Spring (203) be arranged on axle (2) inside, for sliding block (204) provide elastic force, so as to sliding block (204) have it is enough
Elastic force is slided up and down, and there is certain gap in the size of spring (203) and the hole of the inside of axle (2), facilitate sliding block (204)
Motion；
Sliding block (204) is arranged on the inside of axle (2), and the internal diameter size of its diameter co-axial (2), sliding block (204) is with end face
Point processes vertical through hole for the center of circle, is slided up and down for the ease of sliding block (204), there is a slotted hole in its side, banking pin
(201) this slotted hole is inserted in one end, and anti-limited slip block (204) come off, while in order to keep the overhang of sliding block (204) most
It is small, the slotted hole of one 90 ° of quadrant, rotary slider are processed along axis in slotted hole one end, banking pin (201) just blocks
At this slotted hole, anti-limited slip block (204) continues to move, for the installation of safety pin (205), horizontal close to bottom, processing one
Pass through vertical through hole to through hole；
Brake block (202) generally cylinder, size two is dimensioned to according to axle (2) through hole at cylinder both ends
Semi-circular, brake block (202) is arranged in cross through hole, and roundlet one end outwardly, is mutually blocked at brake block (202) ladder with convex rank；
Banking pin (201) is formed using intermetallic composite coating, and integral into a stepped cylinder, banking pin (201) left end is one
Rounded nose, right-hand member are a column part, and 2 times of a diameter of rounded nose diameter of column part, length accounts for (201) two points of banking pin
One of, rounded nose diameter dimension is identical with the slotted hole diameter dimension of sliding block (204), column part external diameter diameter dimension and axle
(2) clear size of opening is identical, and banking pin (201) is arranged on the other end of through hole, the slotted hole of rounded nose insertion sliding block (204)
In.
Blade linking arm is mainly used in connecting main blade and propeller hub, when linking arm is connected with propeller hub, while installs shimmy-damper
Afterwards, by the installation of main blade on the connecting arm, now blade mounting pin is inserted among the mounting hole of blade, blade is fixed on company
Connect on arm.
The testing stand of the present invention has been successfully applied on straight nine serial machine testing stands with main blade linking arm.
Claims (2)
1. the main blade linking arm of a kind of testing stand, it is characterised in that including two parts：Linking arm (1) and blade mounting pin；
Linking arm (1) is formed by one piece of intermetallic composite coating, and one end of linking arm (1) is arranged on propeller hub, is pacified according to the blade of propeller hub
Dress hole processes the propeller hub mounting hole of an identical size on linking arm (1), in order to adapt to propeller hub installation, linking arm (1) propeller hub
Two surface corners need to have a certain degree with linking arm (1) surface mounting hole up and down；According to the chi of blade mounting hole to be measured
It is very little, the blade mounting hole of two insertions is processed on the middle part of linking arm (1), the size of blade mounting hole is installed with blade to be measured
Hole size；According to the mounting hole size of shimmy-damper, the shimmy-damper mounting hole of an insertion is processed in the other end of linking arm (1),
In order to adapt to shimmy-damper installation, linking arm (1) shimmy-damper mounting hole up and down two surface corners need with linking arm (1) surface into
Certain angle；In order to ensure that linking arm (1) and the position of propeller hub installation place do not collide with propeller hub, and also to blade root
Portion and the installation of shimmy-damper, six planes are processed into around linking arm (1) shimmy-damper mounting hole so that blade installs side pair
Answer a plane；
Blade mounting pin is made up of 6 parts：Axle (2), banking pin (201), brake block (202), spring (203), sliding block (204) and
Safety pin (205), wherein banking pin (201), brake block (202), spring (203), sliding block (204), safety pin (205) are all arranged on axle
(2) on；
Axle (2) generally cylinder, in order to prevent blade mounting pin from being come off from the bottom of mounting hole, the diameter at the top of axle (2)
It is more bigger than body diameter formation one bayonet socket, while along the edge of cylinder cut away top a part, formed a boss, side
Just blade mounting pin is dismantled；A groove is diametrically processed at the top of axle (2), is easily installed blade；Axle (2) is pacified for blade
Fill the main body of pin；It is deep to process one to motion in the inside of axle (2) for the exhibition that spring (203) is along axle (2) with sliding block (204)
Hole, and processed outward with the diameter more than deep hole at deep hole half, the deep hole of a stairstepping is formed, is used at ladder
In stop spring (203), the resilient support slided up and down by spring (203) of sliding block (204)；Banking pin (201) and brake block
(202) barrier effect is all played；A cross through hole is processed in the bottom of axle (2) and carries convex rank, the same banking pin of diameter (201) and system
The size of motion block (202)；Safety pin (205) is gone here and there in the through hole of axle (2) and sliding block (204), plays fixation；
Spring (203) is arranged on the inside of axle (2), elastic force is provided for sliding block (204), so that sliding block (204) has enough elastic force
Slided up and down, there is certain gap in the size of spring (203) and the hole of the inside of axle (2), facilitate the fortune of sliding block (204)
It is dynamic；
Sliding block (204) be arranged on axle (2) inside, the internal diameter size of its diameter co-axial (2), sliding block (204) using end face midpoint as
The center of circle processes vertical through hole, is slided up and down for the ease of sliding block (204), there is a slotted hole in its side, banking pin (201)
This slotted hole is inserted in one end, and anti-limited slip block (204) come off, while in order to keep the overhang of sliding block (204) minimum, oval
Hole one end processes the slotted hole of one 90 ° of quadrant along axis, and rotary slider, it is oval that banking pin (201) is just stuck in this
At hole, anti-limited slip block (204) continues to move, and for the installation of safety pin (205), leads to close to bottom, one cross through hole of processing
Cross vertical through hole；
Brake block (202) generally cylinder, two semicircles of size are dimensioned to according to axle (2) through hole at cylinder both ends
Type, brake block (202) are arranged in cross through hole, and roundlet one end outwardly, is mutually blocked at brake block (202) ladder with convex rank；
Banking pin (201) is formed using intermetallic composite coating, and integral into a stepped cylinder, banking pin (201) left end is one circular
Head, right-hand member are a column part, 2 times of a diameter of rounded nose diameter of column part, length account for banking pin (201) two/
One, rounded nose diameter dimension is identical with the slotted hole diameter dimension of sliding block (204), column part external diameter diameter dimension and axle (2)
Clear size of opening it is identical, banking pin (201) be arranged on through hole the other end, rounded nose insertion sliding block (204) slotted hole in.
2. the main blade linking arm of testing stand as claimed in claim 1, it is characterised in that pacified according to propeller hub on linking arm (1)
The size in hole is filled, two small bushing (101) is processed installed in the two of linking arm (1) propeller hub mounting hole using abrasive rubber material
Side, abrasion when protection propeller hub relatively rotates with linking arm (1) to bearing pin, while fluid sealant is used at both cooperations；
According to the size of shimmy-damper mounting hole on linking arm (1), process two metal Large linings (102), Large lining (102) it is interior
Shaft size is installed with shimmy-damper mounting hole size, Large lining (102) on the inside of linking arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510249260.7A CN104880277B (en) | 2015-05-15 | 2015-05-15 | A kind of main blade linking arm of testing stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510249260.7A CN104880277B (en) | 2015-05-15 | 2015-05-15 | A kind of main blade linking arm of testing stand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104880277A CN104880277A (en) | 2015-09-02 |
| CN104880277B true CN104880277B (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510249260.7A Active CN104880277B (en) | 2015-05-15 | 2015-05-15 | A kind of main blade linking arm of testing stand |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416580A (en) * | 2015-11-30 | 2016-03-23 | 哈尔滨飞机工业集团有限责任公司 | Method for avoiding shifting of frequency adapter side plates through bushes |
| CN109533390B (en) * | 2018-11-15 | 2020-11-03 | 中国直升机设计研究所 | Support for measuring mounting angle of propeller hub support arm |
| CN113654725A (en) * | 2021-08-20 | 2021-11-16 | 江西昌河航空工业有限公司 | Helicopter blade dynamic balance test bed adapter assembly and use method thereof |
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| CN201099871Y (en) * | 2007-09-18 | 2008-08-13 | 李凯 | Arch bridge crawler type drossing machine |
| GB2447732A (en) * | 2008-02-25 | 2008-09-24 | Buzzgames Ltd | Training apparatus with ball attached via hub to a swinging arm |
| CN101706349A (en) * | 2009-11-10 | 2010-05-12 | 武汉船用机械有限责任公司 | Static balancing method of whole propeller combination of adjustable pitch propellers |
| CN104344931A (en) * | 2013-08-05 | 2015-02-11 | 哈尔滨飞机工业集团有限责任公司 | Rotor head pulling and twisting strip type propeller hub for helicopter blade dynamic balance test table |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6789578B2 (en) * | 2001-04-30 | 2004-09-14 | Reflange, Inc. | Remotely operable closure device |
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2015
- 2015-05-15 CN CN201510249260.7A patent/CN104880277B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201099871Y (en) * | 2007-09-18 | 2008-08-13 | 李凯 | Arch bridge crawler type drossing machine |
| GB2447732A (en) * | 2008-02-25 | 2008-09-24 | Buzzgames Ltd | Training apparatus with ball attached via hub to a swinging arm |
| CN101706349A (en) * | 2009-11-10 | 2010-05-12 | 武汉船用机械有限责任公司 | Static balancing method of whole propeller combination of adjustable pitch propellers |
| CN104344931A (en) * | 2013-08-05 | 2015-02-11 | 哈尔滨飞机工业集团有限责任公司 | Rotor head pulling and twisting strip type propeller hub for helicopter blade dynamic balance test table |
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| Publication number | Publication date |
|---|---|
| CN104880277A (en) | 2015-09-02 |
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