CN109708554A - A kind of stroke measurment fixture for Hydraulic Servo Mechanism for Plane performance detection - Google Patents
A kind of stroke measurment fixture for Hydraulic Servo Mechanism for Plane performance detection Download PDFInfo
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- CN109708554A CN109708554A CN201811623208.3A CN201811623208A CN109708554A CN 109708554 A CN109708554 A CN 109708554A CN 201811623208 A CN201811623208 A CN 201811623208A CN 109708554 A CN109708554 A CN 109708554A
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- hydraulic servo
- servo mechanism
- performance detection
- stroke measurment
- bar portion
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Abstract
The invention discloses a kind of stroke measurment fixtures for Hydraulic Servo Mechanism for Plane performance detection, including clevis mounting, support arm, active connection and oscillating bearing, active connection includes interconnecting piece interconnected and bar portion, the clevis mounting upper end is equipped with a convex block, convex block is equipped with the bearing hole for installing oscillating bearing, a bushing is arranged on the oscillating bearing, bar portion is movably arranged in bushing, and bar portion stretches out one end of bushing equipped with positioning arc surface, the support arm is mounted on clevis mounting, support arm is equipped with dial gauge, dial gauge face positions arc surface, the present invention has the advantages that accuracy of measurement is high.
Description
Technical field
The present invention relates to Hydraulic Servo Mechanism for Plane performance detection apparatus, more particularly to one kind to be used for Hydraulic Servo Mechanism for Plane
The stroke measurment fixture that can be detected.
Background technique
Since aircraft type is more, booster working performance required by different aircrafts is different, so booster is many kinds of,
Not only properties otherness is big and contour structures are different.For different model booster, need to detect in repair procedures
Multinomial technical parameter, if every kind of aircraft hydraulic booster all designs and produces special purpose test equipment and will cause unnecessary waste, having must
A kind of simple and practical device is developed, does not need in addition to increase work-yard, detection can be realized in access general hydraulic device
It is required that.
Booster during the test, under fixed piston bar state cannot be for linear motion status.Booster tries at present
Major defect present in testing are as follows: be all that test type frame is fixed on shell or body during previous booster test, lead to
Crossing operation input rocker arm makes output piston bar reciprocating, and piston rod can be for linear motion under this state.And work as piston
When bar is fixed on test type frame, since the bearing of piston rod connection lug has the characteristic in flexible motion direction, work as operating rock arm
So that shell or body part can not be for linear motion when moving in a straight line.It is arc rather than merely straight that shell, which makees movement,
Line movement.Such motion mode prevents certain performances of booster from accurately measuring, and increases measurement error, product is reliable
Property reduce.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide that a kind of accuracy of measurement is high to be used for
The stroke measurment fixture of Hydraulic Servo Mechanism for Plane performance detection.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of stroke measurment fixture for Hydraulic Servo Mechanism for Plane performance detection, the stroke measurment fixture includes U-shaped
Mounting base, support arm, active connection and oscillating bearing, the active connection include interconnecting piece interconnected and bar portion, institute
Clevis mounting upper end is stated equipped with a convex block, the convex block is equipped with the bearing hole for installing oscillating bearing, the oscillating bearing
On be arranged in a bushing, the bar portion is movably arranged in bushing, and bar portion stretch out bushing one end be equipped with positioning circular arc
Face, the support arm are mounted on clevis mounting, and the support arm is equipped with dial gauge, and the dial gauge face positions arc surface.
As a further improvement of the above technical scheme, it is preferred that the U-lag side wall of the clevis mounting is equipped with top
Tight component, the component that holds out against includes jacking block and stud, and the stud is arranged on a side wall of U-lag, and the jacking block refers to
To another side wall of U-lag.
As a further improvement of the above technical scheme, it is preferred that the interconnecting piece is activity fork, the activity fork
Shape portion is connected by the input rocker arm of pin shaft and Hydraulic Servo Mechanism for Plane.
As a further improvement of the above technical scheme, it is preferred that one end end face of the bar portion is equipped with joint screw, institute
Positioning arc surface is stated to be set on the nut of joint screw.
As a further improvement of the above technical scheme, it is preferred that the bushing has limit in one end of oscillating bearing
Step, the other end are equipped with screwed retaining ring, are cased with stop nut in the bar portion, and the stop nut is threadedly engaged with bar portion, and
Can with limited step against.
As a further improvement of the above technical scheme, it is preferred that the support arm includes L shape portion and U-shaped portion, the U-shaped
Portion is fixed on clevis mounting, is set in L shape portion there are two opposite clamping plate, and the clamping plate is equipped with half slot, and two and half
Circular groove is equipped with the pinching screw for clamping two half slots for installing dial gauge, two clamping plates.
As a further improvement of the above technical scheme, it is preferred that pass through screw between the U-shaped portion and clevis mounting
Connection, the U-shaped portion are equipped with through-hole, and the clevis mounting is equipped with threaded hole, and the screw passes through through-hole and threaded hole connects
It connects.
Compared with the prior art, the advantages of the present invention are as follows:
Positioning in stroke measurment fixture for Hydraulic Servo Mechanism for Plane performance detection of the invention, dial gauge and bar portion
The distance between arc surface is constant, so that accuracy of measurement greatly improves, reduces measurement error, improves the reliable of measurement
Property.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of stroke measurment fixture of the invention.
Fig. 2 is the side structure schematic view of stroke measurment fixture of the invention.
Fig. 3 is the structural schematic diagram of clevis mounting in the present invention.
Fig. 4 is the structural schematic diagram of support arm in the present invention
Fig. 5 is the side structure schematic view of support arm in the present invention.
Fig. 6 is the schematic view of the front view for the test tool that cooperation stroke measurment fixture of the present invention uses.
Fig. 7 is the overlooking structure diagram for the test tool that cooperation stroke measurment fixture of the present invention uses.
Fig. 8 is the structural schematic diagram of the upper support frame for the test tool that cooperation stroke measurment fixture of the present invention uses.
Each label indicates in figure:
1, bottom plate；11, guide plate；2, fixed bracket；21, fixed fork；22, supporting leg；23, pin shaft；24, spiral shell is adjusted
It is female；3, movable support；301, arc groove；31, upper support frame；32, lower movable stand；33, rolling member；34, bolt is connected；4,U
Shape mounting base；41, convex block；42, U-lag；5, support arm；51, L shape portion；511, clamping plate；512, half slot；513, pinching screw；
52, U-shaped portion；53, screw；6, active connection；61, interconnecting piece；62, bar portion；621, arc surface is positioned；622, joint screw；
63, stop nut；7, oscillating bearing；71, bushing；711, limited step；72, screwed retaining ring；8, component is held out against；81, jacking block；
82, stud.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, invention is further described in detail.
Hydraulic Servo Mechanism for Plane of the invention is existing product, mainly includes that shell, piston rod monaural component and input are shaken
Arm etc., shell are the structure of top lower half circle.Stroke measurment fixture for Hydraulic Servo Mechanism for Plane performance detection of the invention
Compatibility test tooling is mobile to be used, and as shown in Figure 6 to 8, test tool includes bottom plate 1, fixes bracket 2 and movable support 3, Gu
Fixed rack 2 is fixed on bottom plate 1, and the relatively fixed bracket 2 of movable support 3 is movably arranged on bottom plate 1, and movable support 3 is equipped with
The arc groove 301 cooperated with the semicircle outer wall of Hydraulic Servo Mechanism for Plane.Movable support 3 includes upper support frame 31 and lower movable stand
32, bottom plate 1 is equipped with guide plate 11, and lower movable stand 32 is equipped with can be along the rolling member 33 that 11 two sides of guide plate are moved, arc groove
301 are set on upper support frame 31.Rolling member 33 is bearing roller, and lower movable stand 32 is two bearing bracket stands, and each bearing bracket stand is equipped with
One bearing roller, the both ends of upper support frame 31 are connect by connecting bolt 34 with two bearing bracket stands.Arc groove 301 is used to put
Booster is set, outer wall circular arc is bonded, it is steady to guarantee that booster is placed.Fixed bracket 2 includes fixed fork 21 and supporting leg 22, branch
Leg 22 is fixedly connected with bottom plate 1, and fixed fork 21 is connected by the piston rod monaural component of pin shaft 23 and Hydraulic Servo Mechanism for Plane
It connects.Fixed fork 21 is a conventional fork shaped part structure, and supporting leg 22 is threadedly coupled with bottom plate 1, and supporting leg 22 is equipped with adjusting nut
24, adjusting nut 24 is used to adjust direction and the bearing height of fixed fork 21, and adjustment booster is maintained at horizontal when testing
Position and appropriate length.
As shown in Figures 1 to 5, the stroke measurment fixture for Hydraulic Servo Mechanism for Plane performance detection of the present embodiment, packet
Include clevis mounting 4, support arm 5, active connection 6 and oscillating bearing 7, active connection 6 include interconnecting piece 61 interconnected with
Bar portion 62,4 upper end of clevis mounting are equipped with a convex block 41, and convex block 41 is equipped with the bearing hole for installing oscillating bearing 7, joint
A bushing 71 is arranged on bearing 7, bar portion 62 is movably arranged in bushing 71, and one end of the stretching bushing 71 of bar portion 62 is set
There is positioning arc surface 621, support arm 5 is mounted on clevis mounting 4, and support arm 5 is equipped with dial gauge (not shown), dial gauge
Face positions arc surface 621, and the thimble of dial gauge is contacted with positioning arc surface 621 always.
When in use, the semicircular body of Hydraulic Servo Mechanism for Plane shell lower half portion is placed on arc groove 301, one end
Piston rod monaural component is connect with fixed bracket 2, and stroke measurment fixture is stuck in the side of casing upper half point by clevis mounting 4
On body, the interconnecting piece 61 of active connection 6 is connect with the input rocker arm of Hydraulic Servo Mechanism for Plane, fixed by pin shaft 23, operation
It inputs rocker arm and drives Hydraulic Servo Mechanism for Plane shell mobile relative to fixed bracket 2 using hydraulic power drive active connection 6, (behaviour
Make input rocker arm driving active connection 6 to move, while driving the relatively fixed branch of Hydraulic Servo Mechanism for Plane shell using hydraulic coupling
Frame 2 is mobile) telescopic moving in bushing 71 of bar portion 62 simultaneously, it is similar to crank link mechanism.Since input rocker arm is arc fortune
It is dynamic, while bar portion 62 moves linearly in bushing 71, make slight arcuate movement around the center of oscillating bearing 7, due to fixed
The setting of circle of position cambered surface 621, positioning centre distance of any point on arc surface 621 apart from oscillating bearing 7 is equal, percentage
Table and positioning the distance between arc surface 621 be it is constant, the thimble of dial gauge is contacted with positioning arc surface 621 always, with
The movement of arc surface 621 is positioned, the reading of dial gauge is becoming always, thus dial gauge can accurately read the fortune of input rocker arm
Dynamic stroke, to obtain this performance parameter of Hydraulic Servo Mechanism for Plane.The present invention changes traditional test model, with piston
Bar is fixed and the mode of shell movement tests the performance of booster, and the setting of movable support 3 ensure that Hydraulic Servo Mechanism for Plane
Shell is simple linear motion, at the same the distance between the positioning arc surface 621 in dial gauge and bar portion 62 be it is constant, make
It obtains accuracy of measurement to greatly improve, reduces measurement error, improve the reliability of measurement.
In the present embodiment, 42 side wall of U-lag of clevis mounting 4, which is equipped with, holds out against component 8, and holding out against component 8 includes jacking block 81
With stud 82, stud 82 is arranged on a side wall of U-lag 42, and jacking block 81 is directed toward another side wall of U-lag 42.U-shaped peace
The U-lag 42 of dress seat 4 is stuck on the rectangular outer wall of Hydraulic Servo Mechanism for Plane, jacking block 81 is adjusted, so that clevis mounting 4 and aircraft
The rectangular outer wall of hydraulic booster pushes against, to realize that clevis mounting 4 is clamped on rectangular outer wall.
In the present embodiment, the interconnecting piece 61 of active connection 6 is activity fork, and activity fork is by pin shaft 23 and flies
The input rocker arm of machine hydraulic booster connects.One end end face of bar portion 62 is equipped with joint screw 622, joint screw 622 and bar portion
62 are threadedly coupled, and positioning arc surface 621 is set on the nut of joint screw 622.Bar portion 62 be actually a screw rod, bushing 71 in
One end of oscillating bearing 7 has limited step 711, and the other end is equipped with screwed retaining ring 72, is cased with stop nut 63 in bar portion 62, limits
Position nut 63 be threadedly engaged with bar portion 62, and can with limited step 711 against.Screwed retaining ring 72 is used to press from both sides with limited step 711
Clamping hub 71, stop nut 63 are used to limit 62 moving distance of bar portion.Oscillating bearing 7 is standard component.
In the present embodiment, support arm 5 includes L shape portion 51 and U-shaped portion 52, and U-shaped portion 52 is fixed on clevis mounting 4, L shape portion
It being set on 51 there are two opposite clamping plate 511, clamping plate 511 is equipped with half slot 512, and two half slots 512 are used to install dial gauge,
Two clamping plates 511 are equipped with the pinching screw 513 for clamping two half slots 512, the mounting hole of pinching screw 513 and two semicircles
Slot 512 is vertical.It is connected between U-shaped portion 52 and clevis mounting 4 by screw 53, U-shaped portion 52 is equipped with through-hole, clevis mounting 4
It is equipped with threaded hole, screw 53 passes through through-hole and connect with threaded hole.
Working principle:
Since clevis mounting 4 is clamped on Hydraulic Servo Mechanism for Plane in the cube of part, it could be theoretically argued that clevis mounting 4 with
Cube is fixed rigid connection.
Hydraulic coupling is not loaded, and when manipulation inputs rocker motion, active connection 6 is in the case where input rocker motion drives around pass
Bearings 7 make slight circular motion, and booster shell does not move.
When loading hydraulic coupling lower-pilot input rocker arm, since the cube of clevis mounting 4 and booster is rigid connection, U-shaped
Mounting base 4 is not moved with respect to shell, and relatively fixed bracket 2 is moved with booster shell, is inputted rocker arm at this time and is transported with respect to shell
Dynamic, the relatively fixed bracket 2 of shell moves, and the relatively fixed bracket 2 of input rocker arm moves, and inputs rocker motion direction and shell side
To consistent.71 linear motions of opposite bushing under the drive of input rocker motion of active connection 6, while around oscillating bearing 7
Make slight circular motion, the thimble of dial gauge is contacted with positioning arc surface 621 always, with the movement of positioning arc surface 621, hundred
The reading of table is divided to become always, thus dial gauge can accurately read the movement travel of input rocker arm, to obtain aircraft liquid
Press this performance parameter of booster.
Although the present invention has been disclosed as a preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (7)
1. a kind of stroke measurment fixture for Hydraulic Servo Mechanism for Plane performance detection, it is characterised in that: the stroke measurment folder
Tool includes clevis mounting (4), support arm (5), active connection (6) and oscillating bearing (7), and the active connection (6) includes phase
The interconnecting piece (61) to connect and bar portion (62), clevis mounting (4) upper end are equipped with a convex block (41), the convex block (41)
It is equipped with the bearing hole for installing oscillating bearing (7), is arranged in a bushing (71), the bar portion on the oscillating bearing (7)
(62) it is movably arranged in bushing (71), and one end of bar portion (62) stretching bushing (71) is equipped with positioning arc surface (621),
The support arm (5) is mounted on clevis mounting (4), and the support arm (5) is equipped with dial gauge, the dial gauge face setting circle
Cambered surface (621).
2. the stroke measurment fixture according to claim 1 for Hydraulic Servo Mechanism for Plane performance detection, it is characterised in that:
U-lag (42) side wall of the clevis mounting (4) is equipped with and holds out against component (8), and the component (8) that holds out against includes jacking block (81)
With stud (82), the stud (82) is arranged on a side wall of U-lag (42), and the jacking block (81) is directed toward U-lag (42)
Another side wall.
3. the stroke measurment fixture according to claim 1 or 2 for Hydraulic Servo Mechanism for Plane performance detection, feature exist
It is activity fork in: the interconnecting piece (61), the activity fork is defeated by pin shaft (23) and Hydraulic Servo Mechanism for Plane
Enter rocker arm connection.
4. the stroke measurment fixture according to claim 1 or 2 for Hydraulic Servo Mechanism for Plane performance detection, feature exist
In: one end end face of the bar portion (62) is equipped with joint screw (622), and the positioning arc surface (621) is set to joint screw
(622) on nut.
5. the stroke measurment fixture according to claim 1 or 2 for Hydraulic Servo Mechanism for Plane performance detection, feature exist
In: the bushing (71) has limited step (711) in one end of oscillating bearing (7), and the other end is equipped with screwed retaining ring (72), institute
It states and is cased on bar portion (62) stop nut (63), the stop nut (63) is threadedly engaged with bar portion (62), and can be with limiting stand
Rank (711) against.
6. the stroke measurment fixture according to claim 1 or 2 for Hydraulic Servo Mechanism for Plane performance detection, feature exist
In: the support arm (5) includes L shape portion (51) and U-shaped portion (52), and the U-shaped portion (52) is fixed on clevis mounting (4), described
It is set in L shape portion (51) there are two opposite clamping plate (511), the clamping plate (511) is equipped with half slot (512), two half slots
(512) for installing dial gauge, two clamping plates (511) are equipped with the pinching screw (513) for clamping two half slots (512).
7. the stroke measurment fixture according to claim 6 for Hydraulic Servo Mechanism for Plane performance detection, it is characterised in that:
It is connect between the U-shaped portion (52) and clevis mounting (4) by screw (53), the U-shaped portion (52) is equipped with through-hole, the U
Shape mounting base (4) is equipped with threaded hole, and the screw (53) passes through through-hole and connect with threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623208.3A CN109708554B (en) | 2018-12-28 | 2018-12-28 | Stroke measuring clamp for performance detection of aircraft hydraulic booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811623208.3A CN109708554B (en) | 2018-12-28 | 2018-12-28 | Stroke measuring clamp for performance detection of aircraft hydraulic booster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109708554A true CN109708554A (en) | 2019-05-03 |
| CN109708554B CN109708554B (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811623208.3A Active CN109708554B (en) | 2018-12-28 | 2018-12-28 | Stroke measuring clamp for performance detection of aircraft hydraulic booster |
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| Country | Link |
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| CN (1) | CN109708554B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110044233A (en) * | 2019-05-16 | 2019-07-23 | 沈阳飞机工业（集团）有限公司 | Contactless arm parts free travel checks measuring instrument and its application method |
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| Publication number | Publication date |
|---|---|
| CN109708554B (en) | 2020-07-21 |
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