CN208719065U - Jet pipe electrohydraulic servo valve fatigue loading experimental rig - Google Patents
Jet pipe electrohydraulic servo valve fatigue loading experimental rig Download PDFInfo
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- CN208719065U CN208719065U CN201821193261.XU CN201821193261U CN208719065U CN 208719065 U CN208719065 U CN 208719065U CN 201821193261 U CN201821193261 U CN 201821193261U CN 208719065 U CN208719065 U CN 208719065U
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Abstract
The utility model 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, the servo-cylinder, preceding spring base, rear spring seat are respectively fixedly connected on bottom plate；Several disk springs are respectively provided in the preceding spring base and rear spring seat, connection locating rod one end is connected with the piston rod of servo-cylinder, the disk spring that the other end passes through in preceding spring base is connected with the axis in rear spring seat, the retaining ring of disk spring rear end face in the front end face of axis and preceding spring base connects, and the retaining ring of the disk spring front end face in the rear end face and rear spring seat of axis connects.The stress condition when device can be with the work of analog servomechanism valve, load can be repeated to servo valve, check and accept the anti-fatigue life of servo valve, and provide effective foundation for our subsequent design upgrade jobs.
Description
Technical field
The utility model relates to a kind of experimental rig of jet pipe electrohydraulic servo valve, especially a kind of fatigue loading test dress
It sets.
Background technique
Faint electric signal is changed into when electrohydraulic servo valve the Hydraulic Elements of high power hydraulic energy (flow, pressure).
It has concentrated electrical and hydraulic advantage, has quick dynamic response and good static characteristic, especially jet pipe electro-hydraulic
Servo valve has good resistance tocrocking, is widely used to electro-hydraulic position, speed, acceleration, in 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 guarantee electricity
It is high that original high control precision is still able to maintain when hydraulic servo works under varying environment operating condition, reliability with higher, just
Need to carry out jet pipe electrohydraulic servo valve various tests, the test 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 test, 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 verifying jet pipe servo valve fatigue life.
Summary of the invention
To solve the above problems, the actual use operating condition according to jet pipe servo valve in user, the utility model proposes
A kind of jet pipe electrohydraulic servo valve fatigue loading experimental rig, stress condition when which can be with the work of analog servomechanism valve,
Load can be repeated to servo valve, check and accept the anti-fatigue life of servo valve, and provide for our subsequent design upgrade jobs
Effective foundation.
To achieve the above object, the technical solution of the utility model is: a kind of jet pipe electrohydraulic servo valve fatigue loading examination
Experiment device, including servo-cylinder, pinboard, connection locating rod, preceding spring base, rear spring seat, axis, the servo-cylinder, preceding bullet
Spring abutment, rear spring seat are respectively fixedly connected on bottom plate；Several dish-shaped bullets are respectively provided in the preceding spring base and rear spring seat
Spring, connection locating rod one end are connected with the piston rod of servo-cylinder, and the other end passes through the disk spring in preceding spring base with after
Axis in spring base is connected, and the retaining ring of the disk spring rear end face in the front end face of axis and preceding spring base connects, axis
The retaining ring of disk spring front end face in rear end face and rear spring seat connects.
Further, the inner hole of the preceding spring base with connect that locating rod is concentric, the inner hole and axis of rear spring seat are concentric, and even
It connects locating rod and axis is on same axial line.
Further, the combination mounting means of several disk springs is one in overlapping combination, pairing combination, being combined in complex
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 above pinboard by included screw, and servo-cylinder is into answering back by external
Oil pipe is connect with pumping source.
The beneficial effects of the utility model are:
The carry load work situation of this experimental rig analog servomechanism valve in actual work, can guarantee that servo valve band holds continuous work
Make, effectively demonstrates servo valve load fatigue life.In the present apparatus, using disk spring fictitious load, disk spring is rigid
Degree is big, and buffering vibration absorption ability is strong, there is higher space utilization rate, can bear big load, different spring assembly sides with small deformation
Formula can obtain required load character curve.Therefore this experimental rig can be made compact-sized using disk spring, convenient for peace
Adjustment examination, furthermore with disk spring different-thickness, different quantity, different combinations (overlapping combination, pairing combination,
Complex composition) various forms of load can be simulated.And pass through replacement pinboard, so that it may which different servo valves is installed.
Therefore this experimental rig can satisfy the test of different model, different parameters servo valve under different loads.
This experimental rig uses front and back spring base loading method, 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 provides effective foundation for the design improvement of servo valve, product up-gradation, product process control.
Detailed description of the invention
Fig. 1 is the jet pipe electrohydraulic servo valve fatigue loading experimental rig main view of the utility model；
Fig. 2 is the jet pipe electrohydraulic servo valve fatigue loading experimental rig top view of the utility model.
Specific embodiment
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
As shown in figures 1 and 2, the jet pipe electrohydraulic servo valve fatigue loading experimental rig of the utility model, including servo-cylinder
1, pinboard 2, connection locating rod 3, preceding spring base 4, disk spring 5, retaining 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, connection 3 one end of 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 dish in the front end face of axis 8 and preceding spring base 4
The retaining ring 6 of 5 rear end face of shape spring connects, the rear end face of axis 8 and the retaining ring 6 of 5 front end face of disk spring in rear spring seat 9
It connects.
The inner hole of preceding spring base 4 with connect that locating rod 3 is concentric, the inner hole and axis 8 of rear spring seat are concentric, and connect locating rod
3 are on same axial line with axis 8.
The combination mounting means of several disk springs 5 is one of 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 above pinboard 2 by included screw, and servo-cylinder 1 is into answering back through external oil pipe and pump
Source connection.
Utility model device is to carry out simulation loading to jet pipe servo valve, tests the fatigue life of servo valve.Specifically
Implementation process: see Fig. 1
(1) fixed with soket head cap screw 12 first by servo-cylinder 1 on bottom plate 11.Bottom plate 11 is mounted on work again
It is fixed with soket head cap screw 13 on platform.
(2) connection locating rod 3 is connected with the piston rod of servo-cylinder 1, connection is in place.
(3) spring seat assembly assembles before: by a number of disk spring 5(quantity is wanted according to servo valve simulation loading
Ask determining) it is attached in preceding spring base 4, retaining ring 6 is loaded onto respectively in outer end, and gland 7 is compressed with soket head cap screw 14.The thickness of retaining ring 6
Degree is determined according to the installation number and installation form of disk spring 5, guarantees the free shape that disk spring 5 is in front of compression
State.The combination mounting means of disk spring 5 has overlapping combination, pairing combination, complex composition, and different combinations 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, retaining ring 6 is loaded onto respectively in outer end, and gland 7 is compressed with soket head cap screw 14.The thickness of retaining ring 6
Degree is determined according to the installation number and installation form of disk spring 5, guarantees the free shape that disk spring 5 is in front of compression
State.
(5) preceding spring seat assembly is placed on bottom plate 10, bottom plate 10 is put on the table.Connection is nested in by the position 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 retaining ring 6, slightly the preceding spring seat of adjustment
Set, before guaranteeing 4 inner hole of spring base with connect locating rod 3 concentric, 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, guarantees rear spring seat inner hole and axis 8
With one heart, 8 end face of axis is aligned with retaining 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 with interior
Hex screw 16 is fixed.
(8) servo valve 18 is carried into screw in compression with servo valve 18 above pinboard 2.It then will with external oil pipe
Servo-cylinder 1 is connect into answering back with pumping source.
Finally, control servo valve 18 acts, to control the reciprocating motion of 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.
Servo valve 18 is controlled by servo valve control device to continue working, and 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 test, verify the service life of servo valve 18.
To sum up, cost is relatively low for the jet pipe electrohydraulic servo valve fatigue loading experimental rig of the utility model, test job effect
Rate is higher, applied widely, compact-sized, is easily installed, and has stronger novelty, practicability, obtains 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 disk spring that the other end passes through in preceding spring base is connected with the axis in rear spring seat, the front end face of axis
It is connected with the retaining 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 retaining 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 inner hole of spring abutment with connect that locating rod is concentric, the inner hole and axis of rear spring seat are concentric, and connect locating rod and axis is in same axis
On heart line.
3. jet pipe electrohydraulic servo valve fatigue loading experimental rig according to claim 1, it is characterised in that: described several
The combination mounting means of disk spring is one of 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 between servo-cylinder and pinboard by O-ring seal.
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 above pinboard by included screw, 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 |
|---|---|---|---|
| CN201821193261.XU CN208719065U (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 |
|---|---|---|---|
| CN201821193261.XU CN208719065U (en) | 2018-07-26 | 2018-07-26 | Jet pipe electrohydraulic servo valve fatigue loading experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208719065U true CN208719065U (en) | 2019-04-09 |
Family
ID=65975228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821193261.XU Active CN208719065U (en) | 2018-07-26 | 2018-07-26 | Jet pipe electrohydraulic servo valve fatigue loading experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208719065U (en) |
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2018
- 2018-07-26 CN CN201821193261.XU patent/CN208719065U/en active Active
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