CN107355438A - A kind of accessory control system - Google Patents
A kind of accessory control system Download PDFInfo
- Publication number
- CN107355438A CN107355438A CN201710611087.XA CN201710611087A CN107355438A CN 107355438 A CN107355438 A CN 107355438A CN 201710611087 A CN201710611087 A CN 201710611087A CN 107355438 A CN107355438 A CN 107355438A
- Authority
- CN
- China
- Prior art keywords
- valve
- accessory
- fluid
- control system
- accessory motor
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
Abstract
The invention discloses a kind of accessory control system, including oil pump, reversal valve, accessory motor, Fill valve, constant flow control valve, check valve, pressure regulator valve and safety overflow valve.The Fill valve is in parallel with accessory motor；The constant flow control valve includes adjustable throttling and pressure-compensated valve；The check valve is in the loop of fluid；The pressure regulator valve is in parallel with the accessory motor.During work, fluid crosses reversal valve through oil pump and flow to constant flow control valve, and then fluid flows into accessory motor through adjustable throttling all the way, another way fluid flows out through pressure-compensated valve, last two-way fluid interflow, the fluid at interflow flow successively through check valve, reversal valve, finally flow back to fuel tank.Beneficial effect：The present invention is combined using simple Hydraulic Elements, solves the problems, such as that existing a variety of accessories are difficult to match single complete machine, makes the use of accessory eased reliable, to meet the needs of different operating modes.
Description
Technical field
The present invention relates to a kind of engineering machinery accessory control system, belong to technical field of engineering machinery.
Background technology
Current engineering machinery can increasingly be equipped with accessory to realize multi-function operation, and it can only typically export a kind of power
Source, i.e. fluid, but accessory is varied, operating mode typically also more Special complex, for the special power of numerous specification accessories
Demand, part needs can only be met, so as to limit to the use range of complete machine or accessory, or cause user to be advised because of the accessory of demand
Lattice are more, it has to purchase the complete machines of more different size power outputs to realize different work demand.If in addition, accessory demand
Input power and complete machine output power mismatch, by force using the unmanageable of accessory, premature abrasion, or even damage can be caused
Consequence.
The content of the invention
Goal of the invention：The present invention is the shortcomings that overcoming above-mentioned prior art to exist proposition, and it aims to provide a kind of accessory control
System processed, to realize that the complete machine of same power output can match plurality of specifications accessory, realize several work.
Technical scheme：A kind of accessory control system, including oil pump, reversal valve and accessory motor, during work, fluid is through oil pump
Cross reversal valve and flow to accessory motor, finally flowed out from accessory motor, then fuel tank is flowed back to from reversal valve；The accessory control system is also
Including Fill valve and constant flow control valve；The Fill valve is in parallel with accessory motor；The constant flow control valve includes adjustable
Choke valve and pressure-compensated valve；After fluid flow to constant flow control valve, fluid flows into accessory motor through adjustable throttling all the way, separately
Fluid flows out through pressure-compensated valve all the way, and last two-way fluid collaborates to flow back to fuel tank to reversal valve.
Preference, for prevent maloperation reversal valve cause can only single direction rotation motor damage, the accessory control system
Also include check valve, the check valve is in the loop of fluid, and the fluid at interflow flows successively through check valve, reversal valve, finally
Flow back to fuel tank.
Preference, to protect corresponding accessory, the accessory control system also includes pressure regulator valve, the pressure regulator valve and the category
Tool motor is in parallel.
Preference, to avoid the damage of whole oil circuit and executive component, the accessory control system also includes safety overflow
Valve, the safety overflow valve and the reversal valve, constant flow control valve, pressure regulator valve, Fill valve, accessory motor, check valve institute shape
Into oil circuit be in parallel, oil liquid pressure exceed safety value after, fluid directly flows back to fuel tank by safety overflow valve.
Beneficial effect：The present invention is combined using simple Hydraulic Elements, is solved existing a variety of accessories and is difficult to match
The problem of single complete machine, make the use of accessory eased reliable, to meet the needs of different operating modes.
Brief description of the drawings
Fig. 1 is the schematic diagram of the principle of the invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of accessory control system, including oil pump 1, reversal valve 2, accessory motor 3, Fill valve 4, constant flow
Control valve 5, check valve 6, pressure regulator valve 7 and safety overflow valve 8.The Fill valve 4 is in parallel with accessory motor 3, the constant flow
Control valve 5 includes adjustable throttling 51 and pressure-compensated valve 52, and the check valve 6 is in the loop of fluid, the pressure regulator valve 7
It is in parallel with the accessory motor 3.During work, fluid crosses reversal valve 2 through oil pump 1 and flow to constant flow control valve 5, a subsequent road binders
Liquid flows into accessory motor 3 through adjustable throttling 51, and another way fluid flows out through pressure-compensated valve 52, last two-way fluid interflow,
The fluid at interflow flows successively through check valve 6, reversal valve 2, finally flows back to fuel tank.The safety overflow valve 8 and the reversal valve 2,
The oil circuit that constant flow control valve 5, pressure regulator valve 7, Fill valve 4, accessory motor 3, check valve 6 are formed is in parallel, and oil liquid pressure surpasses
After crossing safety value, fluid directly flows back to fuel tank by safety overflow valve 8, protects whole accessory control system.
When change different accessories or in different operating mode operations, it is necessary to according to different power demands to safety overflow valve 8,
Constant flow control valve 5, the value of pressure regulator valve 7 are set, and the setting value of Generally Recognized as safe overflow valve 8 is more than the setting value of pressure regulator valve 7.
When the fluid inputted by oil pump 1 is unstable or is unsatisfactory for during accessory 3 demand of motor, the pressure-compensated valve 52 passes through guarantee
A, B point-to-point transmission pressure difference value of adjustable throttling 51 are constant to ensure the flow for flowing through the fluid of adjustable throttling 51, so as to ensure
Demand of the accessory motor 3 to fluid.Some special operation conditions or extreme position can cause 2 points of A, B pressure value equal, if now
Without pressure regulator valve 7 accessory motor 3 can be caused unstable, the presence just due to pressure regulator valve 7, now pressure regulator valve 7 open, fluid is without category
Have motor 3, directly through pressure regulator valve 7, check valve 6, reversal valve 2, finally flow back to fuel tank, both ensured the stabilization that accessory motor 3 works
Property, and accessory motor 3 is played a protective role, i.e., pressure regulator valve 7 controls the pressure in the loop of accessory motor 3 to be not higher than accessory motor 3
Rated pressure.
When reversal valve 2 is in middle position, i.e., when accessory motor 3 is stopped, belongs to the tool low pressure chamber of motor 3 originally and pass through Fill valve 4
Former high pressure chest repairing to accessory motor 3, the accessory motor 3 that can effectively prevent from running at high speed are emptied during being stopped
And cause the damage of motor.When the reversal valve 2 in operator's maloperation complete machine, check valve 6 effectively can prevent maloperation from being produced
Raw fluid flow into accessory motor 3 and cause can only the motor 3 of single direction rotation damage.
Although be described in detail above to the present invention in conjunction with the embodiments, those skilled in the art's energy
It is enough to understand, on the premise of present inventive concept is not departed from, above-described embodiment can also be changed or changed, still be fallen at this
In the protection domain of invention.
Claims (4)
1. a kind of accessory control system, including oil pump（1）, reversal valve（2）With accessory motor（3）, during work, fluid is through oil pump
（1）Cross reversal valve（2）It flow to accessory motor（3）, finally from accessory motor（3）Outflow, then from reversal valve（2）Flow back to fuel tank；Its
It is characterised by：The accessory control system also includes Fill valve（4）And constant flow control valve（5）；The Fill valve（4）With accessory
Motor（3）It is in parallel；The constant flow control valve（5）Including adjustable throttling（51）And pressure-compensated valve（52）；Fluid is flow to
Constant flow control valve（5）Afterwards, all the way fluid through adjustable throttling（51）Flow into accessory motor（3）, another way fluid mends through pressure
Repay valve（52）Outflow, last two-way fluid collaborate to reversal valve（2）Flow back to fuel tank.
2. accessory control system according to claim 1, it is characterised in that：The accessory control system also includes check valve
（6）, the check valve（6）In the loop of fluid, the fluid at interflow flows successively through check valve（6）, reversal valve（2）, finally
Flow back to fuel tank.
3. accessory control system according to claim 2, it is characterised in that：The accessory control system also includes pressure regulator valve
（7）, the pressure regulator valve（7）With the accessory motor（3）It is in parallel.
4. accessory control system according to claim 3, it is characterised in that：The accessory control system also includes safety and overflow
Flow valve（8）, the safety overflow valve（8）With the reversal valve（2）, constant flow control valve（5）, pressure regulator valve（7）, Fill valve（4）、
Accessory motor（3）, check valve（6）The oil circuit formed is in parallel, and after oil liquid pressure exceedes safety value, fluid passes through safety overflow
Valve（8）Directly flow back to fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710611087.XA CN107355438A (en) | 2017-07-25 | 2017-07-25 | A kind of accessory control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710611087.XA CN107355438A (en) | 2017-07-25 | 2017-07-25 | A kind of accessory control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107355438A true CN107355438A (en) | 2017-11-17 |
Family
ID=60286270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710611087.XA Pending CN107355438A (en) | 2017-07-25 | 2017-07-25 | A kind of accessory control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107355438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023035794A1 (en) * | 2021-09-07 | 2023-03-16 | 徐州徐工挖掘机械有限公司 | Hydraulic system for rotary machine tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732521U (en) * | 2012-07-24 | 2013-02-13 | 徐工集团工程机械股份有限公司 | Flow control valve, flow control device and hydraulic oil cooling system |
| CN103671322A (en) * | 2013-12-05 | 2014-03-26 | 柳工无锡路面机械有限公司 | Single and double vibration control valve of small-sized double-drum roller |
| CN104533863A (en) * | 2014-12-30 | 2015-04-22 | 浙江大学 | Rotary system control valve of crane |
| CN105201948A (en) * | 2015-10-30 | 2015-12-30 | 中联重科股份有限公司 | Flow self-adaption valve and closed type hydraulic system |
| CN207195338U (en) * | 2017-07-25 | 2018-04-06 | 江苏柳工机械有限公司 | A kind of accessory control system |
-
2017
- 2017-07-25 CN CN201710611087.XA patent/CN107355438A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732521U (en) * | 2012-07-24 | 2013-02-13 | 徐工集团工程机械股份有限公司 | Flow control valve, flow control device and hydraulic oil cooling system |
| CN103671322A (en) * | 2013-12-05 | 2014-03-26 | 柳工无锡路面机械有限公司 | Single and double vibration control valve of small-sized double-drum roller |
| CN104533863A (en) * | 2014-12-30 | 2015-04-22 | 浙江大学 | Rotary system control valve of crane |
| CN105201948A (en) * | 2015-10-30 | 2015-12-30 | 中联重科股份有限公司 | Flow self-adaption valve and closed type hydraulic system |
| CN207195338U (en) * | 2017-07-25 | 2018-04-06 | 江苏柳工机械有限公司 | A kind of accessory control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023035794A1 (en) * | 2021-09-07 | 2023-03-16 | 徐州徐工挖掘机械有限公司 | Hydraulic system for rotary machine tool |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171117 |