CN208833175U - Measure the electronics pitch ruler of unmanned helicopter blade pitch angle - Google Patents

Abstract

The utility model relates to the measuring equipment fields characterized by adopting by electric or magnetic means, specifically, it is related to a kind of electronics pitch ruler for measuring unmanned helicopter blade pitch angle, it includes Digit Display Angle Ruler, pitch ruler main body and sliding block, pitch ruler main body is c-type, crossbeam I, vertical beam and crossbeam II including one, the medial surface of vertical beam are V-type, are provided with groove on the medial surface of crossbeam I and crossbeam II；Digit Display Angle Ruler is fixed on crossbeam I；The two sides up and down of sliding block are provided with boss, and boss can slide in groove, and the sliding block side opposite with vertical beam is also that the V-type on the inside of V-type, with vertical beam is symmetrical.Modular construction is used between each building block of the utility model, and components fast assembling-disassembling is facilitated to replace；Based on Digit Display Angle Ruler, measurement accuracy is high, and helicopter can be adjusted to smaller range because vibrating caused by blade two sides propeller pitch angle difference using it by user；The angle applied widely that furniture, lathe, workpiece can also be surveyed.

Description

Measure the electronics pitch ruler of unmanned helicopter blade pitch angle

Technical field

The utility model relates to the measuring equipment fields characterized by adopting by electric or magnetic means, in particular to one The electronics pitch ruler of kind measurement unmanned helicopter blade pitch angle.

Background technique

Helicopter is to carry out change of flight posture by changing blade pitch angle (being commonly called as the angle of pitch, the angle of attack), and propeller pitch angle is smaller When range, as propeller pitch angle increases, lift variation is obvious, and type resistiveization is smaller；Propeller pitch angle is in larger range, with pitch Angle increases, lift variation very little, or even does not rise anti-drop, and type resistance obviously increases.In addition, if two sides blade is same when initially debugging Propeller pitch angle is different at position, and apparent vibration is had in flight course, influences flight safety.

Blade pitch angle is measured by pitch ruler, and Mechanical measurement tool measurement accuracy is low, cannot accurately be surveyed Angulation angle value, and existing electronics pitch ruler measurement range is smaller, is not able to satisfy the measurement needs of technical grade unmanned helicopter.

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 Electronics pitch ruler.

To achieve the goals above, the electronics pitch ruler of the measurement unmanned helicopter blade pitch angle of the utility model includes Digit Display Angle Ruler, pitch ruler main body and sliding block；

Pitch ruler main body is c-type, and crossbeam I, vertical beam and crossbeam II including one, crossbeam I and crossbeam II are parallel to each other, erect Beam and crossbeam I and crossbeam II are perpendicular, and the medial surface of vertical beam is V-type, are provided on the medial surface of crossbeam I and crossbeam II recessed Slot；Digit Display Angle Ruler is fixed on crossbeam I；

The two sides up and down of sliding block are provided with boss, and upper lower convex platform is inserted respectively into the groove of crossbeam I and crossbeam II, recessed Spring is fixed in slot, the other end of spring is connect with sliding block, and boss can slide in groove, the sliding block side opposite with vertical beam Also symmetrical for the V-type on the inside of V-type, with vertical beam.

Further, further include limited cover, be provided with blind hole on the end face of crossbeam I and crossbeam II, be arranged on limited cover There is protrusion corresponding with blind hole, protrusion, which is inserted into blind hole, is fixed on pitch ruler body end for limited cover.

Further, all around, four direction is 0-90 degree to the measurement range of Digit Display Angle Ruler.

Further, handle is additionally provided on sliding block.

Further, groove ends are provided with blind hole, and one end of spring is fixed in blind hole, are arranged on the other end and sliding block Blind hole connection.

The utility model has the following beneficial effects:

(1) modular construction is used between each building block of electronics pitch ruler described in the utility model, facilitates zero The replacement of part fast assembling-disassembling；

(2) based on electronics pitch ruler described in the utility model uses Digit Display Angle Ruler, measurement accuracy height (± 0.05 °), the vibration that helicopter blade is generated by two sides propeller pitch angle difference can be adjusted to smaller range using it by user；

(3) electronics pitch ruler described in the utility model is applied widely, the blade pitch in addition to can be used for measuring helicopter Angle can also survey the inclination angle of furniture, lathe, workpiece.

Detailed description of the invention

Fig. 1 is the utility model structure diagram；

Fig. 2 is pitch ruler agent structure schematic diagram；

Fig. 3 is slide block structure schematic diagram；

Fig. 4 is limited cover structural schematic diagram；

Wherein, the above drawings include the following reference numerals: 1, Digit Display Angle Ruler；2, pitch ruler main body；3, sliding block；4, crossbeam Ⅰ；5, vertical beam；6, crossbeam II；7, groove；8, boss；9, spring；10, limited cover；11, blind hole；12, raised；13, handle.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As Figure 1-Figure 4, the electronics pitch ruler of the measurement unmanned helicopter blade pitch angle of the utility model includes number Aobvious bevel protractor 1, pitch ruler main body 2 and sliding block 3；

As shown in Fig. 2, pitch ruler main body is c-type, crossbeam I 4, vertical beam 5 and crossbeam II 6 including one, crossbeam I and crossbeam II is parallel to each other, and vertical beam and crossbeam I and crossbeam II are perpendicular, and an open slot is collectively formed in crossbeam I, vertical beam and crossbeam II, horizontal Groove 7 is provided on the medial surface of beam I and crossbeam II, the medial surface of vertical beam is V-type；

Digit Display Angle Ruler is fixed on crossbeam I, and all around, four direction is 0- to the measurement range of Digit Display Angle Ruler 90 degree；

The two sides up and down of sliding block are provided with boss 8, and upper lower convex platform is inserted respectively into the groove of crossbeam I and crossbeam II, Groove ends are provided with connecting hole, and one end of spring is fixed in connecting hole, and the connecting hole being arranged on the other end and sliding block is connect, Boss can slidably reciprocate in groove；The sliding block side opposite with vertical beam is also that the V-type on the inside of V-type, with vertical beam is symmetrical.

Sliding block slips in order to prevent, and the electronics pitch ruler of the utility model further includes limited cover 10, crossbeam I and crossbeam II It is provided with blind hole 11 on end face, corresponding with blind hole raised 12 are provided on limited cover, protrusion is inserted into blind hole will limit Position lid is fixed on pitch ruler body end.

It is mobile in order to facilitate sliding block, it is additionally provided with handle 13 on sliding block, facilitates user is hand-held to hold.

Electronics pitch ruler has absolute measurement and relative measurement two ways.In use, sliding block is pulled, by article to be measured It is placed between sliding block and pitch ruler main body, is blocked in the V-groove of two sides.Digit Display Angle Ruler is opened, adjustment measurement pattern is extremely Absolute measurement mode, the numerical value shown on Digit Display Angle Ruler are the absolute measured value of blade pitch angle.Relative measurement needs Reference planes are first chosen, Digit Display Angle Ruler is zeroed on the plane of reference, then pitch ruler are stuck on article to be measured, digital display angle The numerical value shown on ruler screen is opposite pitch angle value.

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 (5)

1. it is a kind of measure unmanned helicopter blade pitch angle electronics pitch ruler, which is characterized in that including Digit Display Angle Ruler (1), Pitch ruler main body (2) and sliding block (3),

Pitch ruler main body (2) is c-type, crossbeam I (4), vertical beam (5) and crossbeam II (6), crossbeam I (4) and crossbeam II including one (6) it is parallel to each other, vertical beam (5) and crossbeam I (4) and crossbeam II (6) are perpendicular, and the medial surface of vertical beam (5) is V-type, crossbeam I (4) With groove (7) are provided on the medial surface of crossbeam II (6)；Digit Display Angle Ruler (1) is fixed on crossbeam I (4)；

The two sides up and down of sliding block (3) are provided with boss (8), and upper lower convex platform (8) is inserted respectively into crossbeam I (4) and crossbeam II (6) Groove (7) in, is fixed with spring (9) in groove (7), the other end of spring (9) is connect with sliding block (3), and boss (8) can be recessed Sliding in slot (7), sliding block (3) and vertical beam (5) opposite side are also V-type, symmetrical with the V-type on the inside of vertical beam (5).

2. the electronics pitch ruler of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that also wrap Include limited cover (10), be provided on the end face of crossbeam I (4) and crossbeam II (6) blind hole (11), be provided on limited cover (10) with Blind hole (11) is corresponding raised (12), and raised (12), which are inserted into blind hole (11), is fixed on pitch ruler main body for limited cover (10) (2) end.

3. the electronics pitch ruler of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that digital display All around, four direction is 0-90 degree to the measurement range of bevel protractor (1).

4. the electronics pitch ruler of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that sliding block (3) handle (13) are additionally provided on.

5. the electronics pitch ruler of measurement unmanned helicopter blade pitch angle according to claim 1, which is characterized in that groove (7) end is provided with connecting hole, and one end of spring (9) is fixed in connecting hole, the connecting hole being arranged on the other end and sliding block (3) Connection.