CN207777310U - The restraining device of redundant force in a kind of servo hydraulic system - Google Patents
The restraining device of redundant force in a kind of servo hydraulic system Download PDFInfo
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- CN207777310U CN207777310U CN201721727247.9U CN201721727247U CN207777310U CN 207777310 U CN207777310 U CN 207777310U CN 201721727247 U CN201721727247 U CN 201721727247U CN 207777310 U CN207777310 U CN 207777310U
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- servobcylinder
- servo
- hydraulic oil
- redundant force
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Abstract
The utility model discloses a kind of restraining devices of redundant force in servo hydraulic system.For not inhibiting redundant force that can influence loading accuracy, damage servo valve, the problem for inhibiting redundant force precision, stability not high enough using overflow valve, method that the utility model inhibits redundant force using throttle valve improves the reliability of system.The utility model includes servoBcylinder and servo valve, the servoBcylinder is connect with servo valve by two hydraulic oil pipes, direction of two hydraulic oil pipes from servoBcylinder to servo valve is parallel with unloading valve, it is characterized in that, it is also parallel with throttle valve on two hydraulic oil pipes between unloading valve and servoBcylinder, by throttle valve adjustment restriction size, redundant force of the servoBcylinder in loading system is made to be overflowed by restriction.By the transformation of the utility model, so that the variation of servoBcylinder pressure is remained gentle stabilization, increase the stability of system work, realizes arbitrary power and inhibit.It can be used in the system for requiring high-frequency high-precision, and reliability is high.
Description
Technical field
The utility model is related to a kind of servo hydraulic systems, more particularly to a kind of suppression of redundant force in servo hydraulic system
Device processed.
Background technology
Hydrauservo System is to make the output quantity of system, such as displacement, speed or power can automatically, quickly and accurately
It follows the variation of input quantity and changes, at the same time, output power is significantly amplified.Hydrauservo System is with its response speed
Unique advantages such as degree is fast, load stiffness is big, control power is big are widely used in Industry Control.
Now there is no the control to redundant force, or even many relevant technicians are basic in many servo hydraulic systems at present
The presence of redundant force is not known.And in some more demanding loading systems, the influence of redundant force just be can not ignore.Such as high frequency
In loading system, if not considering that redundant force inhibits, the output of loading force is just not allowed.Frequency is higher, and redundant force is also more apparent.
In accurate loading system, the redundant force of servoBcylinder is not eliminated, and loading force output will be caused inaccurate, or even damage is loaded production
Product.
The prior art is largely to add pressure limiting valve using the method that redundant force inhibits, and can only accomplish that maximum, force is overflowed.It is this
Requirement of the method to pressure valve is high, it is desirable that the valve will reach certain switching frequency.In high-frequency vibration experiment, pressure valve is opened
Pass frequency is too fast, and pressure valve is easy to damage, and is influenced on system reliability very big：If not inhibiting redundant force, servo can only be leaned on
Valve itself carries out pressure adjusting, however in practical applications, this mode is not very reliable, in high-frequency vibration, hydraulic oil
Having little time reaction to accumulate so as to cause system pressure so that loading accuracy is affected, and is easily damaged servo valve, therefore
Add the method for pressure limiting valve in high-frequency vibration experiment and is not suitable for；If making the inhibition of power of overflow valve in hydraulic system, that is, exist
The import and export of servo executive component increases opposite overflow valve, inhibits the output of maximum, force by the pressure spot of overflow valve regulation,
This method is only applicable in low frequency operation system, if used in radio frequency system, overflow valve is since switching frequency is too fast, very
It is easily damaged.
Utility model content
The purpose of this utility model is that：For not inhibiting redundant force that can influence loading accuracy, damage servo valve, using excessive
The problem that valve inhibits redundant force precision, stability not high enough is flowed, the utility model uses the method that throttle valve inhibits redundant force
To improve the reliability of system.
The technical solution adopted in the utility model is as follows：
The restraining device of redundant force in a kind of servo hydraulic system, including servoBcylinder and servo valve, the servoBcylinder with watch
It takes valve to connect by two hydraulic oil pipes, direction of two hydraulic oil pipes from servoBcylinder to servo valve is parallel with unloading valve, special
Sign is, is also parallel with throttle valve on two between unloading valve and servoBcylinder piece hydraulic oil pipe, passes through throttle valve adjustment restriction
Size makes redundant force of the servoBcylinder in loading system be overflowed by restriction, different pressure differences, just by the pressure of restriction
It is inconsistent, to realize that arbitrary power inhibits.
It is respectively connected with pressure sensor on two hydraulic oil pipes between the servoBcylinder and servo valve, for monitoring pipeline
Pressure.
The pressure sensor is connected on the hydraulic oil pipe between unloading valve and servo valve.
The servo valve is three-position four-way valve, two works of two hydraulic fluid ports of servoBcylinder respectively through hydraulic oil pipe and servo valve
Make mouth connection.
On two hydraulic oil pipes that the both ends of the throttle valve are connected to through three-way connection between servoBcylinder and servo valve.
On two hydraulic oil pipes that the both ends of the unloading valve are connected to through three-way connection between servoBcylinder and servo valve.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：
Restriction size is adjusted by the setting of throttle valve in the utility model, keeps servoBcylinder more in loading system
Surplus energy is overflowed by restriction, achievees the effect that redundant force inhibits.Throttle valve is different from overflow valve, and overflow valve operation principle is to set
A fixed pressure value for being slightly larger than servoBcylinder operating pressure, when servoBcylinder compression reaches setting value, overflow valve is just started to work,
ServoBcylinder pressure is adjusted, and can only be adjusted beyond setting value part, therefore the variation of servoBcylinder pressure is greatly and unstable
Fixed, overflow valve is also easy to be damaged；And throttle valve can then monitor and adjust servoBcylinder pressure at any time, make servoBcylinder pressure
Variation remains gentle stabilization, increases the stability of system work, realizes arbitrary power and inhibits.It can require high frequency height
It is used in the system of precision, and reliability is high.
Description of the drawings
The utility model will illustrate by example and with reference to the appended drawing, wherein：
Fig. 1 is the principles of the present invention figure；
Fig. 2 be the utility model servo hydraulic system in redundant force restraining device be applied to booster bracket loading test platform
On schematic diagram.
In figure：1 --- servoBcylinder, 2 --- servo valve, 3 --- unloading valve, 4 --- throttle valve, 5 --- pressure sensor.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It elaborates to the utility model with reference to Fig. 1, Fig. 2.
Embodiment one
The restraining device of redundant force in a kind of servo hydraulic system, including servoBcylinder 1 and servo valve 2, the servoBcylinder 1 with
Servo valve 2 is connected by two hydraulic oil pipes, and two hydraulic oil pipes are parallel with unloading valve from servoBcylinder 1 to the direction of servo valve 2
3, which is characterized in that be also parallel with throttle valve 4 on two hydraulic oil pipes between unloading valve 3 and servoBcylinder 1, pass through throttle valve 4
Restriction size is adjusted, redundant force of the servoBcylinder 1 in loading system is made to be overflowed by restriction, different pressure differences passes through section
The pressure of head piece is with regard to inconsistent, to realize that arbitrary power inhibits.
It is respectively connected with pressure sensor 5 on two hydraulic oil pipes between the servoBcylinder 1 and servo valve 2, for monitoring
Pipeline pressure.
The pressure sensor 5 is connected on the hydraulic oil pipe between unloading valve 3 and servo valve 2.
The servo valve 2 is three-position four-way valve, and two hydraulic fluid ports of servoBcylinder 1 are respectively through hydraulic oil pipe and the two of servo valve 2
A working hole connection.
Embodiment two
The restraining device of redundant force in a kind of servo hydraulic system, including servoBcylinder 1 and servo valve 2, the servoBcylinder 1 with
Servo valve 2 is connected by two hydraulic oil pipes, and two hydraulic oil pipes are parallel with unloading valve from servoBcylinder 1 to the direction of servo valve 2
3, which is characterized in that be also parallel with throttle valve 4 on two hydraulic oil pipes between unloading valve 3 and servoBcylinder 1, pass through throttle valve 4
Restriction size is adjusted, redundant force of the servoBcylinder 1 in loading system is made to be overflowed by restriction, different pressure differences passes through section
The pressure of head piece is with regard to inconsistent, to realize that arbitrary power inhibits.
It is respectively connected with pressure sensor 5 on two hydraulic oil pipes between the servoBcylinder 1 and servo valve 2, for monitoring
Pipeline pressure.
The pressure sensor 5 is connected on the hydraulic oil pipe between unloading valve 3 and servo valve 2.
The both ends of the throttle valve 4 are connected to two hydraulic oil pipes between servoBcylinder 1 and servo valve 2 through three-way connection
On.
Embodiment three
The restraining device of redundant force in a kind of servo hydraulic system, including servoBcylinder 1 and servo valve 2, the servoBcylinder 1 with
Servo valve 2 is connected by two hydraulic oil pipes, and two hydraulic oil pipes are parallel with unloading valve from servoBcylinder 1 to the direction of servo valve 2
3, which is characterized in that be also parallel with throttle valve 4 on two hydraulic oil pipes between unloading valve 3 and servoBcylinder 1, pass through throttle valve 4
Restriction size is adjusted, redundant force of the servoBcylinder 1 in loading system is made to be overflowed by restriction, different pressure differences passes through section
The pressure of head piece is with regard to inconsistent, to realize that arbitrary power inhibits.
It is respectively connected with pressure sensor 5 on two hydraulic oil pipes between the servoBcylinder 1 and servo valve 2, for monitoring
Pipeline pressure.
The pressure sensor 5 is connected on the hydraulic oil pipe between unloading valve 3 and servo valve 2.
The both ends of the unloading valve 3 are connected to two hydraulic oil pipes between servoBcylinder 1 and servo valve 2 through three-way connection
On.
The applicating example of the utility model, in conjunction with Fig. 2, the inhibition dress of redundant force in the servo hydraulic system of the utility model
It sets applied to the schematic diagram on booster bracket loading test platform.
Claims (6)
1. the restraining device of redundant force in a kind of servo hydraulic system, including servoBcylinder and servo valve, the servoBcylinder and servo
Valve is connected by two hydraulic oil pipes, and direction of two hydraulic oil pipes from servoBcylinder to servo valve is parallel with unloading valve, feature
It is, throttle valve is also parallel on two between unloading valve and servoBcylinder piece hydraulic oil pipe.
2. the restraining device of redundant force in servo hydraulic system according to claim 1, which is characterized in that servoBcylinder with watch
It takes and is respectively connected with pressure sensor on two hydraulic oil pipes between valve.
3. the restraining device of redundant force in servo hydraulic system according to claim 2, which is characterized in that the pressure passes
Sensor is connected on the hydraulic oil pipe between unloading valve and servo valve.
4. the restraining device of redundant force in servo hydraulic system according to claim 1, which is characterized in that the servo valve
For three-position four-way valve, the two working holes connection of two hydraulic fluid ports of servoBcylinder respectively through hydraulic oil pipe and servo valve.
5. the restraining device of redundant force in servo hydraulic system according to claim 1, which is characterized in that the throttle valve
Two hydraulic oil pipes being connected between servoBcylinder and servo valve through three-way connection of both ends on.
6. the restraining device of redundant force in servo hydraulic system according to claim 1, which is characterized in that the unloading valve
Two hydraulic oil pipes being connected between servoBcylinder and servo valve through three-way connection of both ends on.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017213978810 | 2017-10-25 | ||
| CN201721397881 | 2017-10-25 |
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| Publication Number | Publication Date |
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| CN207777310U true CN207777310U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721727247.9U Active CN207777310U (en) | 2017-10-25 | 2017-12-11 | The restraining device of redundant force in a kind of servo hydraulic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859663A (en) * | 2017-10-25 | 2018-03-30 | 成都弗格森液压机电有限公司 | The restraining device of redundant force in a kind of servo hydraulic system |
| CN114278696A (en) * | 2021-12-27 | 2022-04-05 | 湖南联诚轨道装备有限公司 | Steering damper of railway vehicle bogie |
-
2017
- 2017-12-11 CN CN201721727247.9U patent/CN207777310U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859663A (en) * | 2017-10-25 | 2018-03-30 | 成都弗格森液压机电有限公司 | The restraining device of redundant force in a kind of servo hydraulic system |
| CN114278696A (en) * | 2021-12-27 | 2022-04-05 | 湖南联诚轨道装备有限公司 | Steering damper of railway vehicle bogie |
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