CN108757644A - Jet pipe electrohydraulic servo valve fatigue loading experimental rig - Google Patents
Jet pipe electrohydraulic servo valve fatigue loading experimental rig Download PDFInfo
- Publication number
- CN108757644A CN108757644A CN201810833737.XA CN201810833737A CN108757644A CN 108757644 A CN108757644 A CN 108757644A CN 201810833737 A CN201810833737 A CN 201810833737A CN 108757644 A CN108757644 A CN 108757644A
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- China
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- servo
- servo valve
- axis
- spring
- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of jet pipe electrohydraulic servo valve fatigue loading experimental rigs, including servo-cylinder, pinboard, connection locating rod, preceding spring base, rear spring seat, axis, and the servo-cylinder, preceding spring base, rear spring seat are respectively fixedly connected on bottom plate；It is respectively provided with several disk springs in the preceding spring base and rear spring seat, connection locating rod one end is connected with the piston rod of servo-cylinder, the other end passes through the disk spring in preceding spring base to be connected with the axis in rear spring seat, the front end face of axis and the baffle ring of the disk spring rear end face in preceding spring base connect, and the baffle ring of the disk spring front end face in the rear end face and rear spring seat of axis connects.The stressing conditions when device can be worked with analog servomechanism valve, can be repeated servo valve load, check and accept the anti-fatigue life of servo valve, and be our subsequent design upgrade job provides effective foundations.
Description
Technical field
The present invention relates to a kind of experimental rig of jet pipe electrohydraulic servo valve, especially a kind of fatigue loading experimental rig.
Background technology
Faint electric signal is changed into high power hydraulic energy when electrohydraulic servo valve（Flow, pressure）Hydraulic Elements.
It has concentrated the advantages of electrical and hydraulic pressure, has quick dynamic response and good static characteristic, especially jet pipe electro-hydraulic
Servo valve has good resistance tocrocking, is widely used in electro-hydraulic position, speed, acceleration, force servo system.
As jet pipe electrohydraulic servo valve use environment is more and more severe, applying working condition becomes increasingly complex, in order to ensure electricity
Hydraulic servo remains to keep original high control precision high when working under varying environment operating mode, has higher reliability, just
Need to carry out various experiments to jet pipe electrohydraulic servo valve, the experiment that can be done at present have static characteristic test, dynamic characteristic test,
Salt spray test, vibration test, acceleration test, impact test, thermocycling, mould test, damp heat test etc..
There is presently no the standard method of jet pipe servo valve fatigue loading experiment, the anti-fatigue life of servo valve can only be
User can just learn that uncontrollable factor is more using middle, can not fully understand verification jet pipe servo valve fatigue life.
Invention content
To solve the above problems, the actual use operating mode according to jet pipe servo valve in user, the present invention propose one
Kind of jet pipe electrohydraulic servo valve fatigue loading experimental rig, stressing conditions when which can be worked with analog servomechanism valve can be with
Load is repeated to servo valve, checks and accepts the anti-fatigue life of servo valve, and provide effectively for our subsequent design upgrade jobs
Foundation.
To achieve the above object, the technical scheme is that：A kind of jet pipe electrohydraulic servo valve fatigue loading experiment dress
Set, including servo-cylinder, pinboard, connection locating rod, preceding spring base, rear spring seat, axis, the servo-cylinder, preceding spring base,
Rear spring seat is respectively fixedly connected on bottom plate；Several disk springs are respectively provided in the preceding spring base and rear spring seat, even
It connects locating rod one end with the piston rod of servo-cylinder to be connected, the other end passes through disk spring and rear spring seat in preceding spring base
In axis be connected, the baffle ring of the disk spring rear end face in the front end face of axis and preceding spring base connects, the rear end face of axis
It is connected with the baffle ring of the disk spring front end face in rear spring seat.
Further, the endoporus of the preceding spring base with connect that locating rod is concentric, the endoporus and axis of rear spring seat are concentric, and even
Locating rod is connect to be on same axial line with axis.
Further, the combination mounting means of several disk springs is one in overlapping combination, pairing combination, complex composition
Kind.
Further, servo valve is installed by pinboard on the servo-cylinder, by O-shaped between servo-cylinder and pinboard
Sealing ring is tightly connected.
Further, the servo valve is fixed on by included screw above pinboard, and servo-cylinder is into answering back by external
Oil pipe is connect with pumping source.
The beneficial effects of the invention are as follows：
The carry load work situation of this experimental rig analog servomechanism valve in actual work can guarantee that servo valve band carries continue working, have
Demonstrate to effect servo valve load fatigue life.In the present apparatus, using disk spring fictitious load, disk spring rigidity is big,
It is strong to buffer vibration absorption ability, has higher space availability ratio, can bear big load with small deformation, different spring assembly modes can be with
Load character curve needed for obtaining.Therefore this experimental rig can be made compact-sized using disk spring, is easily installed debugging,
Furthermore with disk spring different-thickness, different quantity, different combinations（Overlapping combination, pairing combination, complex group
It closes）Various forms of load can be simulated.And by replacing pinboard, so that it may to install different servo valves.Therefore originally
Experimental rig can meet the test of different model, different parameters servo valve under different loads.
This experimental rig uses front and back spring base load mode, it is ensured that servo valve can be by each operation window
It is acted on to load, improves the testing efficiency of servo valve.
This experimental rig can effectively verify jet pipe servo valve and resist the tired service life under different loads, find servo in time
The recessive defect of valve controls provides effective foundation for the design improvement of servo valve, product up-gradation, product process.
Description of the drawings
Fig. 1 is the jet pipe electrohydraulic servo valve fatigue loading experimental rig front view of the present invention；
Fig. 2 is the jet pipe electrohydraulic servo valve fatigue loading experimental rig vertical view of the present invention.
Specific implementation mode
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Such as Fig. 1, shown in 2, jet pipe electrohydraulic servo valve fatigue loading experimental rig of the invention, including servo-cylinder 1, turn
Fishplate bar 2, connection locating rod 3, preceding spring base 4, disk spring 5, baffle ring 6, gland 7, axis 8, rear spring seat 9, bottom plate 10, oil cylinder bottom
Seat 11, soket head cap screw 12,13,14,16,17, O-ring seal 15.
Servo-cylinder 1, preceding spring base 4, rear spring seat 9 are respectively fixedly connected on bottom plate 10.Preceding spring base 4 and rear spring
Several disk springs 5 are respectively provided in seat 9,3 one end of connection locating rod is connected with the piston rod of servo-cylinder 1, and the other end is worn
The disk spring 5 crossed in preceding spring base 4 is connected with the axis 8 in rear spring seat 9, the front end face of axis 8 and the dish in preceding spring base 4
The baffle ring 6 of 5 rear end face of shape spring connects, the baffle ring 6 of the rear end face and 5 front end face of disk spring in rear spring seat 9 of axis 8
It connects.
The endoporus of preceding spring base 4 with connect that locating rod 3 is concentric, the endoporus and axis 8 of rear spring seat are concentric, and connect locating rod
3 are in axis 8 on same axial line.
The combination mounting means of several disk springs 5 is one kind in overlapping combination, pairing combination, complex composition.
Servo valve 18 is installed by pinboard 2 on servo-cylinder 1, passes through O-shaped sealing between servo-cylinder 1 and pinboard 2
Circle 15 is tightly connected.
Servo valve 18 is fixed on by included screw above pinboard 2, and servo-cylinder 1 is into answering back through external oil pipe and pump
Source connects.
Apparatus of the present invention are to carry out simulation loading to jet pipe servo valve, test the fatigue life of servo valve.Specific implementation
Process：See Fig. 1
（1）First by servo-cylinder 1 on bottom plate 11, fixed with soket head cap screw 12.Bottom plate 11 is mounted on workbench again
On, it is fixed with soket head cap screw 13.
（2）Connection locating rod 3 is connected with the piston rod of servo-cylinder 1, connection is in place.
（3）Preceding spring seat assembly assembly：By a number of disk spring 5（Quantity is wanted according to servo valve simulation loading
Ask determining）Before being attached in spring base 4, baffle ring 6 is loaded onto respectively in outer end, gland 7 is compressed with soket head cap screw 14.The thickness of baffle ring 6
Degree is determined according to the installation number and installation form of disk spring 5, ensures the free shape that disk spring 5 is in before compression
State.The combination mounting means of disk spring 5 has overlapping combination, pairing combination, complex composition, different combinations that can provide difference
Load.
（4）Rear spring seat component assembles：By a number of disk spring 5（Quantity is wanted according to servo valve simulation loading
Ask determining）It is attached in rear spring seat 9, loads onto baffle ring 6 respectively in outer end, gland 7 is compressed with soket head cap screw 14.The thickness of baffle ring 6
Degree is determined according to the installation number and installation form of disk spring 5, ensures the free shape that disk spring 5 is in before compression
State.
（5）Preceding spring seat assembly is placed on bottom plate 10, bottom plate 10 is put on the table.It is nested in connection by the positions Fig. 1
In locating rod 3, then axis 8 is screwed into the screw hole of connection locating rod 3, end face is aligned with baffle ring 6, slightly the preceding spring seat of adjustment
It sets, 4 endoporus of spring base and connect locating rod 3 concentric before ensureing, before disk spring 5 is exactly in compression in the preceding spring base 4 of guarantee
Free state, finally preceding spring base is fixed on bottom plate 10 with soket head cap screw 17, is consolidated bottom plate with soket head cap screw 13
Determine on the table.
（6）Rear spring seat component is attached to the other end of axis 8, adjusts rear spring seat, ensures rear spring seat endoporus and axis 8
With one heart, 8 end face of axis is aligned with baffle ring 6, so that the disk spring 5 in rear spring seat is exactly in the free state before compression, finally
It is fixed on bottom plate 10 with soket head cap screw 17.
（7）By O-ring seal 15 in the slot of pinboard 2, then by pinboard 2 on servo-cylinder, finally use interior
Hex screw 16 is fixed.
（8）By servo valve 18 above pinboard 2, screw in compression is carried with servo valve 18.It then will with external oil pipe
Servo-cylinder 1 is connect into answering back with pumping source.
Finally, control servo valve 18 acts, and is moved back and forth to control 1 piston cylinder of servo-cylinder.Piston retraction, piston rod
Band moving axis 8 moves, the disk spring 5 before compressing in spring base 4；Piston stretches out, and piston driving axis 8 compresses in rear spring seat 9
Disk spring.
18 continue working of servo valve is controlled by servo valve control device, drives the piston rod back and forth band carrying of servo-cylinder 1
Dynamic, until servo valve 18 damages, record servo valve 18 loads the working time, so that it may to test, verify the service life of servo valve 18.
To sum up, jet pipe electrohydraulic servo valve fatigue loading experimental rig cost of the invention is relatively low, test job efficiency compared with
Height, it is applied widely, it is compact-sized, it is easily installed, there is stronger novelty, practicability, obtain in practical applications good
Effect.
Claims (5)
1. a kind of jet pipe electrohydraulic servo valve fatigue loading experimental rig, including it is servo-cylinder, pinboard, connection locating rod, preceding
Spring base, rear spring seat, axis, it is characterised in that：The servo-cylinder, preceding spring base, rear spring seat are respectively fixedly connected with the bottom of at
On plate；It is respectively provided with several disk springs in the preceding spring base and rear spring seat, connects locating rod one end and servo-cylinder
Piston rod is connected, and the other end passes through the disk spring in preceding spring base to be connected with the axis in rear spring seat, the front end face of axis
It is connected with the baffle ring of the disk spring rear end face in preceding spring base, before the disk spring in the rear end face and rear spring seat of axis
The baffle ring of end face connects.
2. jet pipe electrohydraulic servo valve fatigue loading experimental rig according to claim 1, it is characterised in that：The preceding bullet
The endoporus of spring abutment with connect that locating rod is concentric, the endoporus and axis of rear spring seat are concentric, and connect locating rod and be in same axis with axis
On heart line.
3. jet pipe electrohydraulic servo valve fatigue loading experimental rig according to claim 1, it is characterised in that：It is described several
The combination mounting means of disk spring is one kind in overlapping combination, pairing combination, complex composition.
4. jet pipe electrohydraulic servo valve fatigue loading experimental rig according to claim 1, it is characterised in that：The servo
Servo valve is installed by pinboard on oil cylinder, is tightly connected by O-ring seal between servo-cylinder and pinboard.
5. jet pipe electrohydraulic servo valve fatigue loading experimental rig according to claim 4, it is characterised in that：The servo
Valve is fixed on by included screw above pinboard, and the servo-cylinder is connect by external oil pipe with pumping source into answering back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833737.XA CN108757644A (en) | 2018-07-26 | 2018-07-26 | Jet pipe electrohydraulic servo valve fatigue loading experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833737.XA CN108757644A (en) | 2018-07-26 | 2018-07-26 | Jet pipe electrohydraulic servo valve fatigue loading experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757644A true CN108757644A (en) | 2018-11-06 |
Family
ID=63971329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810833737.XA Withdrawn CN108757644A (en) | 2018-07-26 | 2018-07-26 | Jet pipe electrohydraulic servo valve fatigue loading experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757644A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707469A (en) * | 2020-06-24 | 2020-09-25 | 中国航发中传机械有限公司 | Helicopter tail reducer control shaft force loading test device |
-
2018
- 2018-07-26 CN CN201810833737.XA patent/CN108757644A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707469A (en) * | 2020-06-24 | 2020-09-25 | 中国航发中传机械有限公司 | Helicopter tail reducer control shaft force loading test device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181106 |