CN206847920U - A kind of passive servo-loading unit of trailing type - Google Patents
A kind of passive servo-loading unit of trailing type Download PDFInfo
- Publication number
- CN206847920U CN206847920U CN201720572353.8U CN201720572353U CN206847920U CN 206847920 U CN206847920 U CN 206847920U CN 201720572353 U CN201720572353 U CN 201720572353U CN 206847920 U CN206847920 U CN 206847920U
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- CN
- China
- Prior art keywords
- loaded
- hydraulic cylinder
- follower
- pedestal
- servo
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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.)
- Expired - Fee Related
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Abstract
It the utility model is related to a kind of passive servo-loading unit of trailing type, 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 slided on object slide rail is loaded；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.The utility model follower 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.Tthe utility model system response frequency can improve the promptness and accuracy of system response much larger than object motion frequency is loaded.
Description
Technical field
The utility model belongs to test platform technical field, and in particular to a kind of passive servo-loading unit of trailing type.
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,
It obtains the promptness of load and accuracy requirement also improves constantly.Traditional passive type loading experiment platform, which has used, carries 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, and 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, can not accurately be controlled.
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
The purpose of this utility model is to overcome problems of the prior art, there is provided a kind of passive servo of trailing type adds
Carry and put, requirement can be loaded to the displacement and loaded load sensitivity, satisfaction for being loaded object simultaneously.
In order to achieve the above object, the utility model device adopts 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 being loaded on object slide rail and can be slided on object slide rail is loaded；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.
Compared with prior art, the utility model has technique effect beneficial below：
The utility model follower obtains the displacement for being loaded object by the close contact with being loaded object, leads to
The motion of follower driving pressure output mechanism is crossed, and the size of loading force is obtained by pressure output mechanism, by this practicality
New obtain is loaded object radial load, has that pressure acquisition is timely, accurate advantage, both to being loaded the displacement of object
Sensitivity, it is also sensitive to loaded load.Tthe utility model system response frequency can improve much larger than object motion frequency is loaded
The promptness and accuracy of system response.Tthe utility model system rigidity is larger, avoid because rigidity not enough caused by system failure.
Tthe utility model system is simple in construction, can reach instant pressure output, cheap, is easy to promote, and has wide application
Prospect.
Further, the utility model uses Hydraulic Servo-mechanism, greatly reduces the error of electrical control transmission, improves
Obtain the accuracy of load.
Further, the utility model employs two hydraulic cylinders, is respectively provided with to the sensitive flow valve of displacement and to pressure
The sensitive pressure valve of power so that two hydraulic cylinders to displacement and presser sensor, pass through two hydraulic cylinders similar to lever respectively
Compliant platform combine, follower with being loaded object by remaining close contact, when being loaded
When object is subjected to displacement, the i.e. passive traction of servo valve, servo valve is sensitive to displacement, and insensitive to pressure, so working as servo valve
When being 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 drives the movement of pressurized hydraulic cylinder piston rod, causes pressurized hydraulic cylinder interior that pressure change, force hydraulic cylinder band occurs
Some pressure valve are insensitive to displacement to presser sensor, so when pressure change occurs for pressurized hydraulic cylinder interior, pressure valve meeting
Open immediately, and then output pressure value, make displacement of the system preferably to being loaded object sensitive, it is also sensitive to loaded load,
Follower hydraulic cylinder of the utility model with flow valve and the force hydraulic cylinder with pressure valve are used in combination, and can both meet quilt
The situation of object motion frequency is loaded, can meet that big rigidity is loaded the loading demand of object again.
Brief description of the drawings
Fig. 1 is schematic device of the present utility model.
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 utility model is described in further details below in conjunction with the accompanying drawings.
Referring to Fig. 1, the utility model device includes：Follower 1, it is loaded object sliding equipment 2, pressure output mechanism
3 and 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 with the movement for being loaded object 6 and
It is mobile, formed servo-actuated.Follower hydraulic cylinder 5 is fixed on the base 11；The piston rod driving compliant platform 9 of follower hydraulic cylinder 5 moves.
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 cause the movement of the piston rod of connected force hydraulic cylinder 8, caused 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 utility model 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, obtain the displacement for being loaded object 6, valve
It can open immediately, servo valve 4 is opened, and is turned 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, and causes to press 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 and the internal pressure of force hydraulic cylinder 8 balances,
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 utility model proposes a kind of new passive servo of trailing type to add
Carry and put, the hydraulic cylinder with pressure valve and the hydraulic cylinder with flow valve is respectively adopted, follower hydraulic cylinder 5 and pressurized hydraulic
Cylinder 8 has carried out organic combination by the compliant platform 9 similar to lever, reaches both sensitive to displacement, can quickly obtain again
The purpose of load, solve conventional loading system and use single hydraulic cylinder, two kinds of different parameters can not be carried out simultaneously effectively anti-
The drawbacks of answering so that system response frequency much larger than being loaded object motion frequency, can improve system response promptness and
Accuracy, system stiffness is larger, avoid because rigidity not enough caused by system failure, device uses Hydraulic Servo-mechanism, drops significantly
The error of low electrical control transmission, improves the accuracy for obtaining load, the system architecture is simple, cheap, is easy to push away
Extensively.
Follower 1 obtains the displacement for being loaded object 6 by the close contact with being loaded object 6 in the utility model
Amount, compliant platform 9 is driven to move by follower hydraulic cylinder 5, compliant platform 9 is connected with pressure output device, passes through compliant platform 9
Displacement is passed to force hydraulic cylinder 8, and the size of loading force is obtained by pressure output mechanism, by the utility model,
It can obtain and be loaded object radial load, have that pressure acquisition is timely, accurate advantage, the utility model is simple in construction, cost
It is cheap, take full advantage of two kinds of hydraulic cylinders with different valves and system requirements is completed to the sensitivity of different parameters, have
Wide application prospect.
Claims (6)
- A kind of 1. 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) can slide on and on object slide rail (7) is loaded；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.
- A kind of 2. passive servo-loading unit of trailing type according to claim 1, it is characterised in that：Follower (1) wraps 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.
- A kind of 3. passive servo-loading unit of trailing type according to claim 2, it is characterised in that：Servo valve (4) uses Flow valve.
- A kind of 4. passive servo-loading unit 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 And being capable of opposite base (11) slip on pedestal (11)；The piston rod of follower hydraulic cylinder (5) and compliant platform (9) stationary phase Even.
- A kind of 5. passive servo-loading unit of trailing type according to claim 4, it is characterised in that：Force hydraulic cylinder (8) For the hydraulic cylinder with pressure valve.
- A kind of 6. passive servo-loading unit of trailing type according to claim 4, it is characterised in that：Compliant platform (9) is logical Compliant platform sliding equipment (10) is crossed on pedestal (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720572353.8U CN206847920U (en) | 2017-05-22 | 2017-05-22 | A kind of passive servo-loading unit of trailing type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720572353.8U CN206847920U (en) | 2017-05-22 | 2017-05-22 | A kind of passive servo-loading unit of trailing type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206847920U true CN206847920U (en) | 2018-01-05 |
Family
ID=60796961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720572353.8U Expired - Fee Related CN206847920U (en) | 2017-05-22 | 2017-05-22 | A kind of passive servo-loading unit of trailing type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206847920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014599A (en) * | 2017-05-22 | 2017-08-04 | 西安交通大学 | A kind of passive servo-loading unit of trailing type and load acquisition methods |
-
2017
- 2017-05-22 CN CN201720572353.8U patent/CN206847920U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014599A (en) * | 2017-05-22 | 2017-08-04 | 西安交通大学 | A kind of passive servo-loading unit of trailing type and load acquisition methods |
| CN107014599B (en) * | 2017-05-22 | 2023-08-15 | 西安交通大学 | Follow-up type passive servo loading device and load acquisition method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20200522 |