CN208887551U - A kind of oar propeller carpenters square measuring unmanned helicopter blade pitch angle - Google Patents
A kind of oar propeller carpenters square measuring unmanned helicopter blade pitch angle Download PDFInfo
- Publication number
- CN208887551U CN208887551U CN201821727323.0U CN201821727323U CN208887551U CN 208887551 U CN208887551 U CN 208887551U CN 201821727323 U CN201821727323 U CN 201821727323U CN 208887551 U CN208887551 U CN 208887551U
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- China
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- gauge
- pointer
- type snap
- pitch angle
- scale plate
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to measuring equipment fields, in particular to a kind of mechanical angle ruler for measuring unmanned helicopter blade pitch angle comprising scale plate, pointer and V-type snap-gauge, scale plate is cuboid with rounded corners, is carved with bevel protractor and four threaded holes on scale plate；It is the sliding slot with arrow on the left of pointer, centre is slideway；Two V-type snap-gauges, the one side of snap-gauge is smooth, and two sides band is fluted up and down for another side.Modular construction is used between each building block of the utility model, and components fast assembling-disassembling is facilitated to replace；Using mechanical angle ruler, unmanned helicopter can be adjusted to smaller range because rotor two sides propeller pitch angle difference generates blade vibration using it by user；The angle applied widely that timber, tire, lathe etc. can also be surveyed.
Description
Technical field
The utility model relates to measuring equipment fields, in particular to a kind of measurement unmanned helicopter blade pitch angle
Oar propeller carpenters square.
Background technique
The size of unmanned helicopter blade pitch angle plays a crucial role the flight of unmanned plane.Paddle awing
Elongation be it is continually changing, the variation of lift and resistance can be caused by changing.If blade pitch angle is too small, driven by engine blade
Enough lift can not be generated when rotation, influenced unmanned plane and normally taken off.If blade pitch angle is excessive, air drag increases, gas
Efficiency of movement reduces.In addition, otherwise the propeller pitch angle of lifting airscrew both sides of head blade unanimously must will cause lift imbalance, vibration
Excessive influence flight.
Blade pitch angle can be measured by pitch ruler, and oar propeller carpenters square measurement range is small at present, be not able to satisfy technical grade without
The measurement of people's helicopter needs.
Utility model content
The main purpose of the utility model is that providing a kind of measurement unmanned helicopter blade pitch angle regarding to the issue above
Oar propeller carpenters square.
To achieve the goals above, the oar propeller carpenters square of the utility model measurement unmanned helicopter blade pitch angle includes carving
Spend plate, pointer and two pieces of V-type snap-gauges；
Scale plate is cuboid with rounded corners, and measurement pitch ruler is carved on scale plate；There are four threaded holes on scale plate, left
Right two threaded holes are for the connection between scale plate and pointer, and upper and lower two threaded holes are for the company between spring and scale plate
It connects.
It is the sliding slot with arrow on the left of pointer；Two sides are slideway, straight, right side V on the left of slideway up and down among pointer
Type；There is a threaded hole on the right side of pointer, for the connection between pointer and scale plate.
Straight on the left of V-type snap-gauge, right side has V-groove, and the one side of V-type snap-gauge is smooth, and up and down the two of another side V-type snap-gauge
Side band is fluted, and the depth of groove is the half of slideway thickness；There are two threaded hole on V-type snap-gauge, for two V-type snap-gauges
Connection, while being also used for the connection of V-type snap-gauge and spring.
It further, further include being connected threaded hole on the right side of pointer with threaded hole on the right side of scale plate with screw, it will with screw
Sliding slot is connected with the threaded hole on the left of scale plate；Sliding slot can rotate within the scope of angle measurement.
Further, two V-type snap-gauge grooves are respectively charged into two side slideway of pointer；With connecting two of spring one end
Screw fixes two V-type snap-gauges；It can be moved back and forth in slideway after the installation of V-type snap-gauge.
Further, one end of two springs is separately mounted on two screws of V-type snap-gauge, other end spring difference
It is mounted at two threaded holes of scale plate or more；Spring meets the elasticity in measurement range.
Further, the measurement range of oar propeller carpenters square is -15 degree to+15 degree.
Further, the V-groove of V-type snap-gauge and pointer V-groove are symmetrical.
The utility model has the following beneficial effects:
(1) modular construction is used between each building block of oar propeller carpenters square described in the utility model, facilitates zero
The replacement of part fast assembling-disassembling；
(2) oar propeller carpenters square measurement range described in the utility model increases, and user can utilize it by unmanned helicopter paddle
The vibration that the two sides Ye Yin propeller pitch angle is different and generates is adjusted to smaller range；
(3) oar propeller carpenters square described in the utility model is applied widely, the blade in addition to can be used for measuring unmanned helicopter
Propeller pitch angle can be also used for the accurate cutting of timber angle in timber processing；In motor repair trade, fit a tyre angle
Accurate control；In machining, the accurate positioning of lathe operating angle, the measurement such as rotation angle of oversize vehicle vehicle arm.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is scale plate structural schematic diagram；
Fig. 3 is pointer structure schematic diagram；
Fig. 4 is V-type clamp structure schematic diagram；
Wherein, the above drawings include the following reference numerals: 1, scale plate；2, pointer；3, V-type snap-gauge；4, sliding slot；5, sliding
Road；6, pointer V-groove；7, V-type snap-gauge groove；8, spring.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As Figure 1-Figure 4, the oar propeller carpenters square of the measurement unmanned helicopter blade pitch angle of the utility model includes carving
Spend plate 1, pointer 2 and V-type snap-gauge 3；
As shown in figure 3, pointer includes integrated sliding slot 4, slideway 5 and pointer V-groove 6；Sliding slot 4 and scale plate upper left side spiral shell
Pit connection；Pointer V-groove 6 and V-type snap-gauge V-groove are symmetrical；
As shown in Figure 1, V-type snap-gauge groove 7 is mounted on slideway 5, fixed between two V-type snap-gauges with two screws；Two
One end of spring is separately fixed at the threaded hole of V-type snap-gauge, and the other end is separately fixed at two threaded holes of scale plate or more；
V-type snap-gauge 3 can move back and forth after being installed in slideway 5；Sliding slot 4 can be in mechanical propeller pitch after being installed
Rotation in ruler measurement range；Spring 8 meets the aeroelastic requirements in measurement range.
Generally this mechanical propeller pitch ruler is clipped in when mechanical ruler measures and is measured apart from the long place of blade tip certain distance, is infused
It anticipates card slot card just.If it is there is aileron unmanned helicopter, remote controler is opened by aileron axis level-off, makes this mechanical propeller pitch ruler
Edge is parallel with aileron axis on scale plate, and the number of pointer is exactly pitch angle value on oar propeller carpenters square.If it is no aileron, nobody is straight
The machine of liter can choose a certain still life on ground and similarly be aligned with edge on scale plate, pointer on oar propeller carpenters square as reference
Number be exactly pitch angle value.It is most important to have two o'clock in practical operation: first, gauger not move, to have measured a paddle
Rotation rotor part measures next paddle；Second, every paddle measurement position it is identical, if when measuring first paddle, from
It measures at blade tip L, then when measuring second paddle, should also be measured at from blade tip L.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of oar propeller carpenters square for measuring unmanned helicopter blade pitch angle, which is characterized in that including scale plate (1), pointer
(2) and V-type snap-gauge (3),
Pointer (2) includes integrated sliding slot (4), slideway (5) and pointer V-groove (6)；Sliding slot (4) and scale plate (1) upper left side spiral shell
Pit connection；Pointer V-groove (6) and V-type snap-gauge V-groove are symmetrical；
V-type snap-gauge groove (7) is mounted on slideway (5), is fixed between two V-type snap-gauges (3) with two screws；Two springs (8)
One end be separately fixed at two threaded holes of V-type snap-gauge (3), the other end is separately fixed at scale plate (1) two spiral shells up and down
At pit；
V-type snap-gauge (3) can move back and forth after being installed in slideway (5)；Sliding slot (4) can be in oar propeller after being installed
Rotation in carpenters square measurement range；Spring (8) meets the aeroelastic requirements in measurement range.
2. the oar propeller carpenters square of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that use spiral shell
Silk connects threaded hole on the right side of pointer (2) with threaded hole on the right side of scale plate (1), will be on the left of sliding slot (4) and scale plate (1) with screw
Threaded hole connection；Sliding slot (4) can rotate within the scope of angle measurement.
3. the oar propeller carpenters square of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that by two
A V-type snap-gauge groove (7) is respectively charged into (2) two side slideway (5) of pointer；It is fixed with two screws for connecting spring (8) one end
Two V-type snap-gauges (3)；It can be moved back and forth in slideway (5) after V-type snap-gauge (3) installation.
4. the oar propeller carpenters square of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that by two
One end of root spring (8) is separately mounted on two screws of V-type snap-gauge (3), and other end spring (8) is separately mounted to scale plate
(1) up and down at two threaded holes；Spring (8) meets the elasticity in measurement range.
5. the oar propeller carpenters square of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that mechanical
The measurement range of pitch ruler is -15 degree to+15 degree.
6. the oar propeller carpenters square of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that V-type
The V-groove of snap-gauge (3) and pointer V-groove (6) are symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727323.0U CN208887551U (en) | 2018-10-24 | 2018-10-24 | A kind of oar propeller carpenters square measuring unmanned helicopter blade pitch angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727323.0U CN208887551U (en) | 2018-10-24 | 2018-10-24 | A kind of oar propeller carpenters square measuring unmanned helicopter blade pitch angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208887551U true CN208887551U (en) | 2019-05-21 |
Family
ID=66517028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821727323.0U Expired - Fee Related CN208887551U (en) | 2018-10-24 | 2018-10-24 | A kind of oar propeller carpenters square measuring unmanned helicopter blade pitch angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208887551U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672299A (en) * | 2019-11-07 | 2020-01-10 | 中国航空工业集团公司哈尔滨空气动力研究所 | Blade angle measuring and adjusting device based on ducted tail rotor wind tunnel test |
| CN114209306A (en) * | 2021-11-23 | 2022-03-22 | 上海遥蕊医药科技中心 | Universal dividing ruler for orthopedics department |
-
2018
- 2018-10-24 CN CN201821727323.0U patent/CN208887551U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672299A (en) * | 2019-11-07 | 2020-01-10 | 中国航空工业集团公司哈尔滨空气动力研究所 | Blade angle measuring and adjusting device based on ducted tail rotor wind tunnel test |
| CN114209306A (en) * | 2021-11-23 | 2022-03-22 | 上海遥蕊医药科技中心 | Universal dividing ruler for orthopedics department |
| CN114209306B (en) * | 2021-11-23 | 2023-09-15 | 上海遥蕊医药科技中心 | Universal dividing ruler for orthopaedics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20201024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |