CN108226569A - Concertina type pitot - Google Patents
Concertina type pitot Download PDFInfo
- Publication number
- CN108226569A CN108226569A CN201711452750.2A CN201711452750A CN108226569A CN 108226569 A CN108226569 A CN 108226569A CN 201711452750 A CN201711452750 A CN 201711452750A CN 108226569 A CN108226569 A CN 108226569A
- Authority
- CN
- China
- Prior art keywords
- limiting convex
- telescoping tube
- convex shoulder
- fixing pipe
- concertina type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
- G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
- G01P5/165—Arrangements or constructions of Pitot tubes
Abstract
The invention discloses a kind of concertina type pitot, including fixing pipe and telescoping tube；One end of fixing pipe is provided with the first inside limiting convex shoulder, and the inside of fixing pipe is additionally provided with the second limiting convex shoulder；One end of telescoping tube is provided with outside third limiting convex shoulder, and telescoping tube is plugged on the inside of fixing pipe, and telescoping tube can under external force cross the second limiting convex shoulder along fixing pipe axially reciprocating, telescoping tube；When telescoping tube moves to longest extreme position, third limiting convex shoulder is stuck between the first limiting convex shoulder and the second limiting convex shoulder.The concertina type pitot of the present invention realizes the positioning of telescoping tube using the interference relationship between the second limiting convex shoulder and third limiting convex shoulder, spring is omitted in flexible pitot compared with the prior art, pitot does not need to additional constraint in a contracted state, and operation is more convenient.
Description
Technical field
The present invention relates to airplane component field more particularly to a kind of concertina type pitots.
Background technology
Pitot is also Pitot tube or stagnation pressure tube, is a kind of parts on flight equipment, and pitot experiences gas
The stagnation pressure (also referred to as total head) and static pressure of stream, and send the pressure data measured the dresses such as to air data computer, flying instruments
It puts, it is related to height etc. that the pressure data measured using pitot can further calculate the speed of flight equipment, the climb rate
Flight parameter.
The pitot that the prior art is mounted on unmanned plane is generally protruded in the front of head, is unfavorable for the storage of unmanned plane
And transport, in order to overcome this defect, application No. is the Chinese patents of 201621443508.X《A kind of novel telescopic pitot knot
Structure》A kind of flexible pitot structure is disclosed, which includes fixing pipe and telescopic rod, and telescopic rod is plugged on inside fixing pipe,
Telescopic rod is by spring ejection；When storing and transporting unmanned plane, external constraint can be utilized to enter telescopic rod compressed spring solid
Inside fixed tube, the volume of entire unmanned plane is reduced.The defects of this flexible pitot structure, is additional device must be configured
Telescoping tube and spring are compressed, it is not convenient enough.
Invention content
The technical problem to be solved in the present invention is to provide another concertina type pitots, reduce unmanned plane in non-working condition
Under volume.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of concertina type pitot, including fixing pipe
And telescoping tube；
One end of fixing pipe is provided with the first inside limiting convex shoulder, and the inside of fixing pipe is additionally provided with the second limit convex
Shoulder；
One end of telescoping tube is provided with outside third limiting convex shoulder, and telescoping tube is plugged on the inside of fixing pipe, telescoping tube
Can be along fixing pipe axially reciprocating, the size of the second limiting convex shoulder is smaller, and telescoping tube can be crossed under external force
Second limiting convex shoulder；When telescoping tube moves to longest extreme position, third limiting convex shoulder is stuck in the first limiting convex shoulder and second
Between limiting convex shoulder；Telescoping tube is packed up if necessary, directly can push telescoping tube to fixing pipe inside using external force so that stretch
The third limiting convex shoulder of the draw crosses the second limiting convex shoulder, the inside of entire telescoping tube retraction fixing pipe.
Further, it is described second limiting convex shoulder section be arc-shaped, second limiting convex shoulder and third limiting convex shoulder it
Between belong to interference relationship, arc-shaped section contributes to third limiting convex shoulder to cross the second limiting convex shoulder by force.
Further, sealing ring is cased on the telescoping tube, when telescoping tube moves to longest extreme position, sealing ring card
Between the first limiting convex shoulder and third limiting convex shoulder, the leakproofness between telescoping tube and fixing pipe is kept.
Further, the fixing pipe is internally provided with the first conical section, the first conical section be located at the first limiting convex shoulder and
Between second limiting convex shoulder；Be provided with the second conical section on third limiting convex shoulder, the first conical section and the second conical section that
This agrees with.
Further, the fixing pipe and telescoping tube are split structure；
Fixing pipe includes end fixing pipe and main body fixing pipe, main body fixing pipe connection end fixing pipe, the first limit convex
Shoulder, the second limiting convex shoulder and the first conical section are arranged in the fixing pipe of end；
Telescoping tube includes end telescoping tube and main body telescoping tube, main body telescoping tube connection end telescoping tube, end telescoping tube
Serve as the third limiting convex shoulder of entire telescoping tube；
Fixing pipe and telescoping tube belong to elongated rod part, all kinds of limiting convex shoulders not easy to be processed, and split structure has
Help the production and processing of fixing pipe and telescoping tube.
Further, fixing piece is installed, fixing piece is used to be mounted on to fly by fixing pipe to set in the main body fixing pipe
It is standby upper.
Advantageous effect：The concertina type pitot of the present invention utilizes the interference between the second limiting convex shoulder and third limiting convex shoulder
Spring is omitted in the positioning of relational implementation telescoping tube, flexible pitot compared with the prior art, and pitot is in a contracted state
Additional constraint is not needed to, operation is more convenient.
Description of the drawings
Fig. 1 is the structure chart (elongation state) of 1 pitot of embodiment.
Fig. 2 is the structure chart (contraction state) of 1 pitot of embodiment.
Fig. 3 is the sectional view of 1 pitot of embodiment.
Fig. 4 is the A enlarged drawings of Fig. 3.
Wherein：1st, fixing pipe；1-1, end fixing pipe；1-1-1, the first limiting convex shoulder；1-1-2, the second limiting convex shoulder；1-
1-3, the first conical section；1-2, main body fixing pipe；2nd, telescoping tube；2-1, end telescoping tube；2-1-1, the second conical section；2-2, master
Body telescoping tube；3rd, fixing piece；4th, sealing ring.
Specific embodiment
The present invention is described in further detail With reference to embodiment.
Embodiment 1
As shown in Figures 1 to 4, the concertina type pitot of the present embodiment, including fixing pipe 1, telescoping tube 2 and fixing piece 3, Gu
Fixed tube 1 and telescoping tube 2 are split structure；
Fixing pipe 1 includes end fixing pipe 1-1 and main body fixing pipe 1-2, main body fixing pipe 1-2 connection end fixing pipes 1-
The first inside limiting convex shoulder 1-1-1 and the second limiting convex shoulder 1-1-2, the second limit convex are provided in 1, end fixing pipe 1-1
The section of shoulder 1-1-2 is arc-shaped；The first conical section 1-1-3 is provided in the fixing pipe 1-1 of end；Pacify on main body fixing pipe 1-2
Equipped with fixing piece 3；
Telescoping tube 2 includes end telescoping tube 2-1 and main body telescoping tube 2-2, main body telescoping tube 2-2 connection end telescoping tubes 2-
The outer diameter of 1, end telescoping tube 2-1 are slightly larger than the internal diameter of the second limiting convex shoulder 1-1-2；Second is provided on the telescoping tube 2-1 of end
Conical section 2-1-1, the second conical section 2-1-1 agree with the first conical section 1-1-3；O-ring seal is cased on main body telescoping tube 2-2
4。
The concertina type pitot of the present embodiment is used for unmanned plane, and in unmanned plane during flying, pitot is in elongation state, tool
Body is shown as shown in Figure 1, Figure 3 and Figure 4, and in this case, end telescoping tube 2-1 is stuck in the limits of the first limiting convex shoulder 1-1-1 and second
Between the convex shoulder 1-1-2 of position, the interference relationship between the second limiting convex shoulder 1-1-2 and end telescoping tube 2-1 can ensure entirely to stretch
The stabilization of the draw 2；Meanwhile end telescoping tube 2-1 squeezes O-ring seal 4, keeps the sealing between telescoping tube 2 and fixing pipe 1；
If necessary to store and transport unmanned plane, external force should be used inwardly to push away telescoping tube 2 along the axial of fixing pipe 1
It send so that end telescoping tube 2-1 is squeezed and crossed the second limiting convex shoulder 1-1-2, and final major part telescoping tube 2 is contracted to fixing pipe
1 inside (specific as shown in Figure 2) reduces the volume of entire unmanned plane.
Although embodiments of the present invention are illustrated in specification, these embodiments are intended only as prompting,
It should not limit protection scope of the present invention.It is equal that various omission, substitution, and alteration are carried out without departing from the spirit and scope of the present invention
It should include within the scope of the present invention.
Claims (6)
1. a kind of concertina type pitot, it is characterised in that：Including fixing pipe and telescoping tube；
One end of fixing pipe is provided with the first inside limiting convex shoulder, and the inside of fixing pipe is additionally provided with the second limiting convex shoulder；
One end of telescoping tube is provided with outside third limiting convex shoulder, and telescoping tube is plugged on the inside of fixing pipe, and telescoping tube can
Along fixing pipe axially reciprocating, telescoping tube can cross the second limiting convex shoulder under external force；When telescoping tube moves to
During longest extreme position, third limiting convex shoulder is stuck between the first limiting convex shoulder and the second limiting convex shoulder.
2. concertina type pitot according to claim 1, it is characterised in that：The section of the second limiting convex shoulder is in circular arc
Shape.
3. concertina type pitot according to claim 2, it is characterised in that：Sealing ring is cased on the telescoping tube, when stretching
When the draw moves to longest extreme position, sealing ring is stuck between the first limiting convex shoulder and third limiting convex shoulder.
4. concertina type pitot according to claim 3, it is characterised in that：The fixing pipe is internally provided with the first circular cone
Section, the first conical section are located between the first limiting convex shoulder and the second limiting convex shoulder；Second is provided on the third limiting convex shoulder
Conical section, the first conical section and the second conical section are agreed with each other.
5. concertina type pitot according to claim 4, it is characterised in that：The fixing pipe and telescoping tube are split type
Structure；
Fixing pipe includes end fixing pipe and main body fixing pipe, main body fixing pipe connection end fixing pipe, the first limiting convex shoulder, the
Two limiting convex shoulders and the first conical section are arranged in the fixing pipe of end；
Telescoping tube includes end telescoping tube and main body telescoping tube, main body telescoping tube connection end telescoping tube, and end telescoping tube serves as
The third limiting convex shoulder of entire telescoping tube.
6. concertina type pitot according to claim 5, it is characterised in that：Fixation is installed in the main body fixing pipe
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452750.2A CN108226569B (en) | 2017-12-28 | 2017-12-28 | Telescopic airspeed head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452750.2A CN108226569B (en) | 2017-12-28 | 2017-12-28 | Telescopic airspeed head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108226569A true CN108226569A (en) | 2018-06-29 |
| CN108226569B CN108226569B (en) | 2021-01-05 |
Family
ID=62649263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711452750.2A Active CN108226569B (en) | 2017-12-28 | 2017-12-28 | Telescopic airspeed head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108226569B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506829A (en) * | 2018-12-05 | 2019-03-22 | 太原航空仪表有限公司 | A kind of Pop-up stagnation pressure probe |
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| CN206234215U (en) * | 2016-10-31 | 2017-06-09 | 东莞市金弘美电子有限公司 | Special-shaped expansion link |
| CN206330992U (en) * | 2016-12-27 | 2017-07-14 | 陕西中科博亿电子科技有限公司 | A kind of novel telescopic air speed tubular construction |
-
2017
- 2017-12-28 CN CN201711452750.2A patent/CN108226569B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6901793B1 (en) * | 2003-09-15 | 2005-06-07 | Ernest T. Jefferson | High temperature pilot probe cover |
| CN2882923Y (en) * | 2005-05-10 | 2007-03-28 | 天津市金锚集团有限责任公司 | Extension rod, its steering gear and adjustable handle |
| CN2834404Y (en) * | 2005-10-25 | 2006-11-08 | 徐为尔 | Telescopic suction pipe of suction cleaner |
| CN201201229Y (en) * | 2008-03-21 | 2009-03-04 | 陈寅 | Telescopic tube of electric tool |
| CN201504666U (en) * | 2008-11-06 | 2010-06-16 | 赵国祥 | Umbrella shaft extension structure |
| CN201554979U (en) * | 2009-12-08 | 2010-08-18 | 新疆天业（集团）有限公司 | Telescopic pipeline connecting part |
| CN101788409A (en) * | 2010-02-03 | 2010-07-28 | 青岛海纳光电环保有限公司 | Telescopic multifunctional soot/gas sampling tube with adjustable length |
| CN102495232A (en) * | 2011-12-19 | 2012-06-13 | 上海理工大学 | Portable air speed measuring apparatus of pipeline |
| CN203188585U (en) * | 2013-04-26 | 2013-09-11 | 李旭亮 | Movable type ladder for building renovation |
| CN104153024A (en) * | 2014-08-29 | 2014-11-19 | 井孝安 | Telescopic drafting tube for spinning |
| CN104964603A (en) * | 2015-07-10 | 2015-10-07 | 北京中电兴发科技有限公司 | Three-segmented telescopic self-locking spontoon |
| CN105156421A (en) * | 2015-07-10 | 2015-12-16 | 北京中电兴发科技有限公司 | Multi-section telescopic pipe device |
| CN205026260U (en) * | 2015-07-15 | 2016-02-10 | 黄子颀 | Stretchy water pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506829A (en) * | 2018-12-05 | 2019-03-22 | 太原航空仪表有限公司 | A kind of Pop-up stagnation pressure probe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108226569B (en) | 2021-01-05 |
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