CN108945425A - A kind of soft limiting device of helicopter flight manipulation - Google Patents
A kind of soft limiting device of helicopter flight manipulation Download PDFInfo
- Publication number
- CN108945425A CN108945425A CN201810686763.4A CN201810686763A CN108945425A CN 108945425 A CN108945425 A CN 108945425A CN 201810686763 A CN201810686763 A CN 201810686763A CN 108945425 A CN108945425 A CN 108945425A
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- CN
- China
- Prior art keywords
- boss
- pull rod
- limiting device
- retainer
- helicopter flight
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
- B64C27/56—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement characterised by the control initiating means, e.g. manually actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
Abstract
The present invention provides a kind of helicopter flights to manipulate soft limiting device, is related to flight control design field.Described device includes pull rod (2), sleeve (8), spring (7) and retainer (1), first boss (9) and second boss (10) are provided on the pull rod (2), sleeve (8) is set between two boss of the pull rod (2), and extended to form ring-shaped step (11) in one end close to second boss (10) to the pull rod axis direction, spring (7) is arranged between the step (11) and the first boss (9).Pull rod is moved downwardly to sleeve lower end and when retainer contacts, and spring starts to continue to compress, and power sense at this time is more than normal forces sense, gives one suggesting effect of operator, certain soft position-limiting action is played, to improve the handling safety of driver.
Description
Technical field
The invention belongs to flight control design fields, and in particular to a kind of soft limiting device of helicopter flight manipulation.
Background technique
The flight control system of helicopter is mainly by the collective-pitch lever system of control vertical lift, control longitudinal direction and lateral week
Phase displacement lever system controls the pedal system composition in course.They respectively by control auto-bank unit control rotor and
Tail-rotor manipulates helicopter.This is than fixed wing aircraft manipulation elevator, the control stick of aileron and the pedal device of manipulation direction rudder
Steerable system for want complicated more, improve the development difficulty of helicopter.
Safe and reliable stroke restricting means should be set according to each linear system channel, and be disposed at cockpit manipulation as far as possible
Near device.To prevent helicopter body institute bending moment excessive, distance caging device should be set, the manipulation row of driver is limited
Journey.
Summary of the invention
For this purpose, before hard limit, being uprushed, being protected by a stick force the present invention provides a kind of soft limiting device of machinery
Helicopter flight steerable system is demonstrate,proved in normal range, one suggesting effect of operator is given, plays certain soft limit
Effect.
Helicopter flight of the present invention manipulates soft limiting device, including pull rod, sleeve, spring and retainer, wherein
Pull rod passes through retainer, and the internal diameter of the retainer is greater than the outer diameter of the pull rod, and the is provided on the pull rod
One boss and second boss, and the part between first boss and second boss of pull rod is limited as interlude；
Sleeve, is set in the interlude of the pull rod, and in one end close to second boss to the pull rod axis direction
Ring-shaped step is extended to form, the outer diameter of step is greater than the internal diameter of the retainer, and it is convex that the step internal diameter is less than described second
The outer diameter of platform, the sleeve diameter are greater than the outer diameter of the first boss；
Spring is arranged between the step and the first boss；
The non-intermediate stage of pull rod is arranged in retainer, and close to the second boss.
Preferably, the spring has pretightning force.
Preferably, the tie rod end is provided with connector, is used for connecting rocker arm.
Preferably, the connector includes that band arbor is held.
Preferably, the first boss is detachably connected with the pull rod.
Preferably, the first boss and the pull rod rivet.
Preferably, the pull rod is provided with external screw thread, and the first boss is provided with the matching externally threaded interior spiral shell
Line.
The present invention can guarantee that helicopter flight steerable system in normal range, is uprushed by a stick force, to behaviour
Vertical one suggesting effect of personnel, plays certain soft position-limiting action, plays hard limit when continuing manipulation.The invention can not only drive
The person of sailing provides the feeling of power, and can improve the handling safety of driver.
The invention device structure is simple, safe and reliable, can guarantee flight control system frictional force, rigidity and movement travel
In the case where constant, by stick force reminding effect and stroke limit effect synthesis.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a preferred embodiment of soft limiting device is manipulated according to helicopter flight of the present invention.
Fig. 2 is that the foot-operated of embodiment illustrated in fig. 1 of the present invention packs up schematic diagram.
Fig. 3 is that the foot-operated of embodiment illustrated in fig. 1 of the present invention uses schematic diagram.
Wherein, 1 is retainer, and 2 be pull rod, and 3 hold for band arbor, and 4 be locking nut, and 5 be gasket, and 6 be interlude, and 7 are
Spring, 8 be sleeve, and 9 be first boss, and 10 be second boss, and 11 be step.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
The present invention relates to a kind of soft limiting devices of helicopter flight steerable system.As shown in Figure 1, specifically including that drawing
Bar 2, passes through retainer 1, and the internal diameter of the retainer 1 is greater than the outer diameter of the pull rod, is provided with first boss on the pull rod 2
9 and second boss 10, and the part between first boss 9 and second boss 10 of pull rod 2 is limited as interlude 6；
Sleeve 8, is set in the interlude 6 of the pull rod 2, and in one end close to second boss 10 to the pull rod axis
Direction extends to form ring-shaped step 11, and 11 outer diameter of step is greater than the internal diameter of the retainer 1, and 11 internal diameter of step is less than
The outer diameter of the second boss 10,8 internal diameter of sleeve are greater than the outer diameter of the first boss 9；
Spring 7 is arranged between the step 11 and the first boss 9；And
6 part of non-interlude of pull rod 2 is arranged in retainer 1, and close to the second boss 10.
In the present invention, when elastic draw bar 2 works in the normal range, retainer 1 is not limited it, due to spring
7 are mounted among the step 11 and first boss 9 of sleeve 8 by preloading, and pull rod 2 is equivalent to rigid pull rod at this time；Work as drawing
Bar 2 moves downward, until sleeve 8 will be acted on and stop motion by retainer when 8 lower end of sleeve and retainer 1 contact, at this point,
When pull rod continues to move downward, the beginning of spring 7 is compressed, and power sense at this time is more than normal forces sense, prompts operator to one
A normal extreme position, and still ensure that the total travel movement of manipulation, when elastic draw bar 2 continues to be moved downwardly to the limit, bullet
7 doubling-up of spring, plays a supporting role, and is limited completely when reaching the limit of position.This limiting device is that a kind of structure is simple, reliable
The high soft limiting device of property.
In the present embodiment, 2 end of pull rod is provided with connector, is used for connecting rocker arm, which for example can be band handle
Bearing 3, as shown in Figure 1, holding 3 ends for being detachably attached to by locking nut 4 and gasket the connector with arbor.
In the present embodiment, the first boss 9 is detachably connected with the pull rod 2, such as is connected through a screw thread or riveting
The modes such as connect.
In the present embodiment, spring 7 still has pretightning force in 2 normal range of pull rod.In the present invention, soft limit parameter
It designs as follows
If Fig. 2 establishes simultaneously reduced parameter design, according to general requirement, it is first determined the total kilometres X of steerable system is determined not
The stroke X1 of power bar is needed, then determines the stroke X2 for needing power bar.Work as the dress by related Handling Quality Requirements and gear ratio calculation
The power bar variation in X2 stroke range is set, curve shown in Fig. 2 is made.The curve has determined the row of unidirectional soft limit
Journey and rigidity.It limits, elastic draw bar 2 can be applied in combination if you need to two directions.
Since the power bar of the limiting device is mainly provided by spring 7, relevant design need to be carried out to spring parameter, as Fig. 3 is built
Vertical spring design parameter determines the force value F of steerable system leverage in proper motion, it is desirable that elastic draw bar 2 according to general requirement
Force value F1 > F before soft limit starts；Simultaneously according to the stroke X2 of soft limit, the doubling-up length of spring 7 is calculated, is calculated
F2；Finally require the maximal destruction force value F3 > F2 of spring 7；The design parameter of spring has been determined by above-mentioned.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, the essence for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Mind and range.
Claims (7)
1. a kind of helicopter flight manipulates soft limiting device characterized by comprising
Pull rod (2) passes through retainer (1), and the internal diameter of the retainer (1) is greater than the outer diameter of the pull rod, on the pull rod (2)
Be provided with first boss (9) and second boss (10), and limit pull rod (2) be located at first boss (9) and second boss (10)
Between part be interlude (6)；
Sleeve (8), is set in the interlude (6) of the pull rod (2), and in one end close to second boss (10) to the pull rod
Axis direction extends to form ring-shaped step (11), and step (11) outer diameter is greater than the internal diameter of the retainer (1), the step
(11) internal diameter is less than the outer diameter of the second boss (10), and sleeve (8) internal diameter is greater than the outer diameter of the first boss (9)；
Spring (7) is arranged between the step (11) and the first boss (9)；And
Retainer (1) is arranged in non-interlude (6) part of pull rod (2), and close to the second boss (10).
2. helicopter flight as described in claim 1 manipulates soft limiting device, which is characterized in that the spring (7) has pre-
Clamp force.
3. helicopter flight as described in claim 1 manipulates soft limiting device, which is characterized in that pull rod (2) end is set
It is equipped with connector, is used for connecting rocker arm.
4. helicopter flight as claimed in claim 3 manipulates soft limiting device, which is characterized in that the connector includes band arbor
It holds.
5. helicopter flight as described in claim 1 manipulates soft limiting device, which is characterized in that the first boss (9) with
The pull rod (2) is detachably connected.
6. helicopter flight as claimed in claim 5 manipulates soft limiting device, which is characterized in that the first boss (9) with
Pull rod (2) riveting.
7. helicopter flight as claimed in claim 5 manipulates soft limiting device, which is characterized in that the pull rod (2) is provided with
External screw thread, the first boss (9) are provided with the matching externally threaded internal screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810686763.4A CN108945425A (en) | 2018-06-28 | 2018-06-28 | A kind of soft limiting device of helicopter flight manipulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810686763.4A CN108945425A (en) | 2018-06-28 | 2018-06-28 | A kind of soft limiting device of helicopter flight manipulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108945425A true CN108945425A (en) | 2018-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810686763.4A Pending CN108945425A (en) | 2018-06-28 | 2018-06-28 | A kind of soft limiting device of helicopter flight manipulation |
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| Country | Link |
|---|---|
| CN (1) | CN108945425A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB537039A (en) * | 1939-11-30 | 1941-06-06 | Plessey Co Ltd | Improvements in actuating devices for manually-operated apparatus |
| US3936015A (en) * | 1974-06-28 | 1976-02-03 | United Technologies Corporation | Retractable collective pitch stick |
| CN202593853U (en) * | 2012-03-09 | 2012-12-12 | 陕西飞机工业（集团）有限公司 | Novel control surface control device |
| CN105667809A (en) * | 2014-12-08 | 2016-06-15 | 空中客车运营简化股份公司 | Rudder bar for aircraft |
| CN105947185A (en) * | 2016-06-02 | 2016-09-21 | 江西洪都航空工业集团有限责任公司 | Low-friction spring load mechanism |
| CN106184774A (en) * | 2015-04-29 | 2016-12-07 | 陕西飞机工业（集团）有限公司 | Many gradients people's induction device and method for designing thereof |
| CN106800087A (en) * | 2015-11-26 | 2017-06-06 | 中国直升机设计研究所 | A kind of manned wheel braking controller for helicopter |
| CN207421201U (en) * | 2017-11-21 | 2018-05-29 | 哈尔滨翼拟科技有限公司 | A kind of Helicopter Simulator steering device damping unit |
-
2018
- 2018-06-28 CN CN201810686763.4A patent/CN108945425A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB537039A (en) * | 1939-11-30 | 1941-06-06 | Plessey Co Ltd | Improvements in actuating devices for manually-operated apparatus |
| US3936015A (en) * | 1974-06-28 | 1976-02-03 | United Technologies Corporation | Retractable collective pitch stick |
| CN202593853U (en) * | 2012-03-09 | 2012-12-12 | 陕西飞机工业（集团）有限公司 | Novel control surface control device |
| CN105667809A (en) * | 2014-12-08 | 2016-06-15 | 空中客车运营简化股份公司 | Rudder bar for aircraft |
| CN106184774A (en) * | 2015-04-29 | 2016-12-07 | 陕西飞机工业（集团）有限公司 | Many gradients people's induction device and method for designing thereof |
| CN106800087A (en) * | 2015-11-26 | 2017-06-06 | 中国直升机设计研究所 | A kind of manned wheel braking controller for helicopter |
| CN105947185A (en) * | 2016-06-02 | 2016-09-21 | 江西洪都航空工业集团有限责任公司 | Low-friction spring load mechanism |
| CN207421201U (en) * | 2017-11-21 | 2018-05-29 | 哈尔滨翼拟科技有限公司 | A kind of Helicopter Simulator steering device damping unit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |