CN107014599A - A kind of passive servo-loading unit of trailing type and load acquisition methods - Google Patents
A kind of passive servo-loading unit of trailing type and load acquisition methods Download PDFInfo
- Publication number
- CN107014599A CN107014599A CN201710365420.3A CN201710365420A CN107014599A CN 107014599 A CN107014599 A CN 107014599A CN 201710365420 A CN201710365420 A CN 201710365420A CN 107014599 A CN107014599 A CN 107014599A
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- China
- Prior art keywords
- hydraulic cylinder
- loaded
- follower
- servo
- pressure
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of passive servo-loading unit of trailing type and load acquisition methods, including being loaded object slide rail and pedestal, wherein, object slide rail is loaded to be fixedly mounted on pedestal, be loaded object be arranged on be loaded on object slide rail and can be loaded on object slide rail slide；It is loaded object and for obtaining displacement and being in contact all the time with the follower for being loaded object synchronous motion, follower is connected with the pressure output mechanism for obtaining loading force size.Follower of the present invention obtains the displacement for being loaded object by the close contact with being loaded object, moved by follower driving pressure output mechanism, and the size of loading force is obtained by pressure output mechanism, with pressure acquisition is timely, accurate advantage, both the displacement to being loaded object is sensitive, also sensitive to loaded load.Present system response frequency can improve the promptness and accuracy of system response much larger than object motion frequency is loaded.
Description
Technical field
The invention belongs to test platform technical field, and in particular to a kind of passive servo-loading unit of trailing type and load are obtained
Take method.
Background technology
As society is more and more to the demand of large-scale high precise equipment, the demand of part bracket loading test platform also increases therewith,
Its promptness and accuracy requirement for obtaining load are also improved constantly.Traditional passive type loading experiment platform has been used with flow valve
Hydraulic cylinder, the subject matter of this loading system is to may be only available for the state that small rigidity is loaded object.
F=kx
The state of object is loaded for small rigidity, k is finite value, when the timings of F mono-, then x can be controlled accurately.
The state of object is loaded for big rigidity, k is infinity, when the timings of F mono-, x very littles, it is impossible to accurate control.
Pressure valve performance itself is only related to hydraulic cylinder cavity volume size, and its response bandwidth is much smaller than the corresponding frequency range of flow valve,
For be loaded object motion frequency it is larger when can not meet again.
The content of the invention
It is an object of the invention to overcome problems of the prior art, there is provided a kind of passive servo loading dress of trailing type
Put and load acquisition methods, can be while sensitive to the displacement and loaded load for being loaded object, satisfaction loading is required.
In order to achieve the above object, apparatus of the present invention are adopted the following technical scheme that：
Including being loaded object slide rail and pedestal, wherein, it is loaded object slide rail and is fixedly mounted on pedestal, is loaded pair
As installed in be loaded on object slide rail and can be loaded on object slide rail slide；It is loaded object and obtains displacement with being used for
Measure and be in contact all the time with the follower for being loaded object synchronous motion, follower and the pressure for obtaining loading force size
Power output mechanism is connected.
Further, follower includes servo valve and follower hydraulic cylinder, and wherein follower hydraulic cylinder is fixedly mounted on pedestal
On, piston rod and the pressure output mechanism of follower hydraulic cylinder are fixedly linked；The piston of servo valve connects all the time with being loaded object
Touch.
Further, servo valve uses flow valve.
Further, pressure output mechanism includes force hydraulic cylinder and compliant platform, and force hydraulic cylinder is fixed on pedestal,
Compliant platform is arranged on pedestal and being capable of opposite base slip；The piston rod of follower hydraulic cylinder is fixedly linked with compliant platform.
Further, force hydraulic cylinder is the hydraulic cylinder with pressure valve.
Further, compliant platform is arranged on pedestal by compliant platform sliding equipment.
The inventive method is adopted the following technical scheme that：
Comprise the following steps：
Step one：Object will be loaded by being loaded object slide rail on pedestal, and be loaded object with being used for
The servo valve for opening follower hydraulic cylinder remains contact, and the piston rod of follower hydraulic cylinder connects pressurized hydraulic by compliant platform
The piston rod of cylinder, follower hydraulic cylinder and force hydraulic cylinder are fixedly mounted on pedestal, and force hydraulic cylinder carries pressure valve；
Step 2：Object slip is loaded, servo valve passively draws and opened, and turns on oil circuit, rapidly enters hydraulic oil
The cavity volume of follower hydraulic cylinder, the piston rod of follower hydraulic cylinder is moved and promotes compliant platform to move；
Step 3：Compliant platform promotes the piston rod movement of force hydraulic cylinder, and force hydraulic cylinder internal pressure produces change,
Force hydraulic cylinder internal pressure is balanced by Opening pressure valve, and output pressure value, obtain the passive servo loading of trailing type and carry
Lotus.
Compared with prior art, the present invention has following beneficial technique effect：
Follower of the present invention is obtained by the close contact with being loaded object and is loaded the displacement of object, by with
Motivation structure driving pressure output mechanism is moved, and obtains the size of loading force by pressure output mechanism, can be obtained by the present invention
Object radial load must be loaded, with pressure acquisition is timely, accurate advantage, both the displacement to being loaded object is sensitive,
It is sensitive to loaded load.Present system response frequency can improve system response much larger than object motion frequency is loaded
Promptness and accuracy.Present system rigidity is larger, it is to avoid because rigidity not enough caused by system failure.Present system structure
Simply, instant pressure output can be reached, it is cheap, it is easy to promote, has broad application prospects.
Further, the present invention uses Hydraulic Servo-mechanism, greatly reduces the error of electrical control transmission, improves and obtain
Obtain the accuracy of load.
Two hydraulic cylinders are employed in the inventive method, are respectively provided with to the sensitive flow valve of displacement and to pressure-sensitive
Pressure valve so that two hydraulic cylinders to displacement and presser sensor, pass through two hydraulic cylinders similar to the servo-actuated flat of lever respectively
Platform combines, and follower with being loaded object by remaining close contact, when being loaded object
During displacement, servo valve is passive traction, and servo valve is sensitive to displacement, and insensitive to pressure, so when servo valve is drawn,
Valve can be opened immediately, cause follow-up hydraulic cylinder piston rod to be moved, and piston rod promotes compliant platform movement, compliant platform band
Dynamic pressure hydraulic cylinder piston rod is moved, and causes pressurized hydraulic cylinder interior to occur pressure change, the pressure valve that force hydraulic cylinder is carried
It is insensitive to displacement to presser sensor, so when pressure change occurs for pressurized hydraulic cylinder interior, pressure valve can be opened immediately,
And then output pressure value, make system preferably to the displacement sensitivity for being loaded object, also sensitive to loaded load, the present invention is carried
The follower hydraulic cylinder of flow valve and the force hydraulic cylinder combined use with pressure valve, can both meet and be loaded object motion frequency
The situation of rate, can meet the loading demand that big rigidity is loaded object again.
Brief description of the drawings
Fig. 1 is the schematic device of the present invention.
1- followers；2- is loaded object sliding equipment；3- pressure outputs mechanism；4- servo valves；5- follower hydraulic cylinders；
6- is loaded object；7- is loaded object slide rail；8- force hydraulic cylinders；9- compliant platforms；10- compliant platform sliding equipments；11-
Pedestal.
Embodiment
The present invention is described in further details below in conjunction with the accompanying drawings.
Referring to Fig. 1, apparatus of the present invention include：Follower 1, it is loaded object sliding equipment 2, the and of pressure output mechanism 3
Pedestal 11.
Follower 1 includes servo valve 4 and follower hydraulic cylinder 5.Being loaded object sliding equipment 2 includes being loaded object 6
Be loaded object slide rail 7.Pressure output mechanism 3 includes force hydraulic cylinder 8, compliant platform 9 and compliant platform sliding equipment 10.
Follower hydraulic cylinder 5 is the hydraulic cylinder with servo valve 4, sensitive to displacement.Servo valve 4 is the valve of follower hydraulic cylinder 5
Door, is directly connected with follower hydraulic cylinder 5, and is fixedly mounted on the top of follower hydraulic cylinder 5；Servo valve 4 uses flow valve, servo valve
4 piston remains close contact with being loaded object 6；The displacement of the piston of servo valve 4 and the displacement phase for being loaded object 6
Close, and cause the piston rod movement of follower hydraulic cylinder 5, i.e., the piston rod of follower hydraulic cylinder 5 is with the movement for being loaded object 6
It is mobile, form servo-actuated.Follower hydraulic cylinder 5 is fixed on the base 11；The piston rod driving compliant platform 9 of follower hydraulic cylinder 5 is moved.
It is loaded object 6 and is connected with being loaded object slide rail 7, can be slidably.It is loaded object slide rail 7 and is fixed on base
On seat 11.By the relative slip for being loaded object 6 Yu being loaded object slide rail 7, the phase for being loaded object 6 and pedestal 11 is realized
To motion.
Force hydraulic cylinder 8 is fixed on the base 11.Force hydraulic cylinder 8 is the hydraulic cylinder with pressure valve, to presser sensor.
The piston rod of force hydraulic cylinder 8 is connected with compliant platform 9.Force hydraulic cylinder 8 is obtained to be carried in and is loaded pair by pressure valve
As the magnitude of load on 6.Compliant platform 9 is connected by compliant platform sliding equipment 10 with pedestal 11.Compliant platform 9 passes through servo-actuated
Platform sliding equipment 10 realizes the relative motion with pedestal 11.
Follower 1 obtains the displacement for being loaded object 6 by the close contact with being loaded object 6, by servo-actuated
Displacement is passed to force hydraulic cylinder 8 by platform 9, is obtained by force hydraulic cylinder 8 and is loaded the big of 6 loaded loads of object
It is small.Follower 1 obtains the displacement for being loaded object 6 by the close contact with being loaded object 6, causes compliant platform 9
Displacement, the displacement of compliant platform 9 causes the movement of the piston rod of connected force hydraulic cylinder 8, causes in force hydraulic cylinder 8
Pressure change occurs for portion, and force hydraulic cylinder 8 carries pressure valve, and pressure valve is insensitive to displacement to presser sensor, so working as hydraulic pressure
When pressure change occurs for cylinder interior, active control pressure valve is opened so that the pressure balance of force hydraulic cylinder 8, and then output pressure
Value.
The present invention main course of work and principle：
In use, the piston of servo valve 4 and be loaded object 6 and remain close contact, be loaded object 6 by with quilt
Loading object slide rail 7 is connected, can slidably, and follower hydraulic cylinder 5 is connected with force hydraulic cylinder 8 by compliant platform 9,
Displacement passes to force hydraulic cylinder 8, and compliant platform 9 is realized slidably by being connected with compliant platform sliding equipment 10.
When being loaded the slip generation displacement of object 6, servo valve 4 is passively drawn, and servo valve 4 uses flow valve, flow valve
It is sensitive to displacement, and it is insensitive to pressure, so when servo valve 4 is drawn, obtaining the displacement for being loaded object 6, valve
It can immediately open, servo valve 4 is opened, turn on oil circuit, hydraulic oil is rapidly entered the cavity volume of follower hydraulic cylinder 5, cause follow-up hydraulic
The piston rod of cylinder 5 is moved, and the piston rod of follower hydraulic cylinder 5 promotes compliant platform 9 to move, and compliant platform 9 drives pressure fluid
Displacement, is passed to force hydraulic cylinder 8, the piston rod of force hydraulic cylinder 8 is subjected to displacement, causes pressure by the piston rod movement of cylinder pressure 8
The internal pressure of power hydraulic cylinder 8 changes, and now pressure-sensitive pressure valve is opened so that the internal pressure of force hydraulic cylinder 8 is balanced,
It can quickly obtain and be loaded magnitude of load added by object 6.
For the various drawbacks of existing bracket loading test platform, the present invention proposes a kind of passive servo loading dress of new trailing type
Put, the hydraulic cylinder with pressure valve and the hydraulic cylinder with flow valve is respectively adopted, follower hydraulic cylinder 5 and force hydraulic cylinder 8
Organic combination has been carried out by the compliant platform 9 similar to lever, has reached both to displacement sensitivity, load can be quickly obtained again
Purpose, solve conventional loading system using single hydraulic cylinder, it is impossible to while carrying out effecting reaction to two kinds of different parameters
Drawback so that system response frequency can improve the promptness of system response and accurate much larger than being loaded object motion frequency
Property, system stiffness is larger, it is to avoid because rigidity not enough caused by system failure, device uses Hydraulic Servo-mechanism, greatly reduces
The error of electrical control transmission, improves the accuracy for obtaining load, and the system architecture is simple, cheap, is easy to promote.
Follower 1 obtains the displacement for being loaded object 6 by the close contact with being loaded object 6 in the present invention,
Compliant platform 9 is driven to move by follower hydraulic cylinder 5, compliant platform 9 is connected with pressure output device, by compliant platform 9
Displacement passes to force hydraulic cylinder 8, and obtains the size of loading force by pressure output mechanism, by the present invention, can obtain
Object radial load is loaded, with pressure acquisition is timely, accurate advantage, the present invention is simple in construction, cheap, fully profit
System requirements is completed to the sensitivity of different parameters with two kinds of hydraulic cylinders with different valves, before wide application
Scape.
Claims (7)
1. a kind of passive servo-loading unit of trailing type, it is characterised in that：Including being loaded object slide rail (7) and pedestal (11),
Wherein, object slide rail (7) is loaded to be fixedly mounted on pedestal (11), be loaded object (6) be arranged on be loaded object slide rail
(7) on and can be loaded on object slide rail (7) slide；Be loaded object (6) with for obtaining displacement and with being loaded
Object (6) synchronization-moving follower (1) is in contact all the time, follower (1) and the pressure for obtaining loading force size
Output mechanism (3) is connected.
2. the passive servo-loading unit of a kind of trailing type according to claim 1, it is characterised in that：Follower (1) is wrapped
Servo valve (4) and follower hydraulic cylinder (5) are included, wherein follower hydraulic cylinder (5) is fixedly mounted on pedestal (11), follower hydraulic cylinder
(5) piston rod is fixedly linked with pressure output mechanism (3)；The piston of servo valve (4) connects all the time with being loaded object (6)
Touch.
3. the passive servo-loading unit of a kind of trailing type according to claim 2, it is characterised in that：Servo valve (4) is used
Flow valve.
4. the passive servo-loading unit of a kind of trailing type according to claim 2, it is characterised in that：Pressure output mechanism
(3) force hydraulic cylinder (8) and compliant platform (9) are included, force hydraulic cylinder (8) is fixed on pedestal (11), compliant platform (9) peace
On pedestal (11) and can opposite base (11) slide；The piston rod of follower hydraulic cylinder (5) and compliant platform (9) stationary phase
Even.
5. the passive servo-loading unit of a kind of trailing type according to claim 4, it is characterised in that：Force hydraulic cylinder (8)
For the hydraulic cylinder with pressure valve.
6. the passive servo-loading unit of a kind of trailing type according to claim 4, it is characterised in that：Compliant platform (9) leads to
Compliant platform sliding equipment (10) is crossed on pedestal (11).
7. a kind of passive servo loading load acquisition methods of trailing type, it is characterised in that：Comprise the following steps：
Step one：Object (6) will be loaded by being loaded object slide rail (7) on pedestal (11), and be loaded object
(6) remain and contact with the servo valve (4) for opening follower hydraulic cylinder (5), the piston rod of follower hydraulic cylinder (5) by with
The piston rod of moving platform (9) connection force hydraulic cylinder (8), follower hydraulic cylinder (5) and force hydraulic cylinder (8) are fixedly mounted on base
On seat (11), force hydraulic cylinder (8) carries pressure valve；
Step 2：Object (6) slip is loaded, servo valve (4) passively draws and opened, and turns on oil circuit, hydraulic oil is quickly entered
Enter the cavity volume of follower hydraulic cylinder (5), the piston rod of follower hydraulic cylinder (5) is moved and promotes compliant platform (9) mobile；
Step 3：Compliant platform (9) promotes the piston rod movement of force hydraulic cylinder (8), and force hydraulic cylinder (8) internal pressure is produced
Change, force hydraulic cylinder (8) internal pressure is balanced by Opening pressure valve, and output pressure value, is obtained trailing type and is passively watched
Take loaded load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365420.3A CN107014599B (en) | 2017-05-22 | 2017-05-22 | Follow-up type passive servo loading device and load acquisition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710365420.3A CN107014599B (en) | 2017-05-22 | 2017-05-22 | Follow-up type passive servo loading device and load acquisition method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107014599A true CN107014599A (en) | 2017-08-04 |
| CN107014599B CN107014599B (en) | 2023-08-15 |
Family
ID=59450323
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710365420.3A Active CN107014599B (en) | 2017-05-22 | 2017-05-22 | Follow-up type passive servo loading device and load acquisition method |
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| Country | Link |
|---|---|
| CN (1) | CN107014599B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465906A (en) * | 2021-07-30 | 2021-10-01 | 杭州高品自动化设备有限公司 | Door actuator EOL testing mechanism and working method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1425712A (en) * | 1973-01-24 | 1976-02-18 | Dewandre Co Ltd C | Apportioning valves for vehicle braking systems |
| JPH05172667A (en) * | 1991-12-20 | 1993-07-09 | Nippon Gear Co Ltd | Stem shaft thrust load measuring apparatus for valve actuator |
| JP2006192570A (en) * | 2006-04-14 | 2006-07-27 | Oks Co Ltd | Method for suppressing chatter of workpiece, and device for supporting workpiece |
| CN103543013A (en) * | 2013-10-17 | 2014-01-29 | 华中科技大学 | Static-pressure axial-radial loading mechanism |
| CN203534823U (en) * | 2013-10-17 | 2014-04-09 | 华中科技大学 | Hydrostatic bearing radial loading mechanism |
| CN206847920U (en) * | 2017-05-22 | 2018-01-05 | 西安交通大学 | A kind of passive servo-loading unit of trailing type |
-
2017
- 2017-05-22 CN CN201710365420.3A patent/CN107014599B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1425712A (en) * | 1973-01-24 | 1976-02-18 | Dewandre Co Ltd C | Apportioning valves for vehicle braking systems |
| JPH05172667A (en) * | 1991-12-20 | 1993-07-09 | Nippon Gear Co Ltd | Stem shaft thrust load measuring apparatus for valve actuator |
| JP2006192570A (en) * | 2006-04-14 | 2006-07-27 | Oks Co Ltd | Method for suppressing chatter of workpiece, and device for supporting workpiece |
| CN103543013A (en) * | 2013-10-17 | 2014-01-29 | 华中科技大学 | Static-pressure axial-radial loading mechanism |
| CN203534823U (en) * | 2013-10-17 | 2014-04-09 | 华中科技大学 | Hydrostatic bearing radial loading mechanism |
| CN206847920U (en) * | 2017-05-22 | 2018-01-05 | 西安交通大学 | A kind of passive servo-loading unit of trailing type |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465906A (en) * | 2021-07-30 | 2021-10-01 | 杭州高品自动化设备有限公司 | Door actuator EOL testing mechanism and working method thereof |
| CN113465906B (en) * | 2021-07-30 | 2023-12-26 | 杭州高驰智能装备有限公司 | EOL test mechanism of door actuator and working method thereof |
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| Publication number | Publication date |
|---|---|
| CN107014599B (en) | 2023-08-15 |
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