CN108799234A - A kind of circular buffering flow control hydraulic valve - Google Patents
A kind of circular buffering flow control hydraulic valve Download PDFInfo
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- CN108799234A CN108799234A CN201810737963.8A CN201810737963A CN108799234A CN 108799234 A CN108799234 A CN 108799234A CN 201810737963 A CN201810737963 A CN 201810737963A CN 108799234 A CN108799234 A CN 108799234A
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- 230000003139 buffering effect Effects 0.000 title claims abstract description 56
- 230000004044 response Effects 0.000 claims abstract description 16
- 238000009825 accumulation Methods 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 238000013016 damping Methods 0.000 claims abstract description 8
- 230000006837 decompression Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 68
- 239000010720 hydraulic oil Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 3
- 239000007853 buffer solution Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 239000000446 fuel Substances 0.000 description 9
- 230000005611 electricity Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of circular buffering flow control hydraulic valves.Circular buffering flow control hydraulic valve includes：Handle, reducer unit, handle spring connecting rod, main valve body, rear valve deck, electromagnetic coil, main valve plug spring, main valve plug, circulation loop spool, preceding valve deck, balance gate gurgle valve, response buffering valve, impact unloading valve, damping, buffering accumulation of energy auxiliary and special-shaped oil circuit.Solve the problems, such as that hydraulic system provides the reverse rotation hydraulic shock that generates after a shutdown of rotary load executive component of power and inertial rotation causes vacuum air inlet in Hydraulic Elements pipeline; invent a kind of circular buffering flow control hydraulic valve proposed; when hydraulic system stops power or cut-out hydraulic power source; realize that hydraulic oil slowly gradually slows down in channel interior cycle, the flow control new method for the moment impact that buffer system generates.
Description
Technical field
The invention belongs to HYDRAULIC CONTROL SYSTEM fields, and in particular to a kind of circular buffering flow control hydraulic valve.
Background technology
High-speed rotating executive component is when shutting down, because the inertia of itself generates larger rotary inertia, for precisely controlling
System or the operating mode occasion shut down in time need to increase external control for brake rotation, but rotation executive component stopping need not be stood
The case where stopping or rotating speed is needed slowly to stop is carved, system control generally stops power output using driving element, and rotation is held
Units leave inertial rotation until mechanical friction method of shutting down is realized.This hydraulic system hydraulic motor drive high rotating speed,
The load of large torque, and it is very common in the equipment required without hard stop, such as hydraulic motor driving fan blade rotation.
And above-mentioned this control mode is in hydraulic open system, hydraulic pump shut down or cut-out oil circuit fuel feeding in the case of, by
Inertial rotation of leaving is rotated in load, hydraulic motor generates pipeline office because inertia passively rotates discharge hydraulic motor oil inlet pipe
Portion's vacuum, when especially loading rotating element in high-order arrangement, it is easier to generate hydraulic motor inner vacuum or enter air, make
Hydraulic motor booting seriously affects the service life in aneroid full-force feed friction pneumatic readily every time；And in hydraulic closed
In system, when hydraulic pump shuts down or cuts off oil circuit fuel feeding, load rotatory inertia makes hydraulic motor outlet hydraulic oil sealing close aggregation,
Pressure steeply rises, and generates reverse drive hydraulic motor, load reversion, hydraulic motor both ends channel interior is because stopping during this
Machine, reversion influence, and generate impacting with high pressure damage Hydraulic Elements, the decline of pipeline service life.
In view of the above-mentioned problems, should realize that load inertia rotation slow machine halt reduces mechanical friction, and solve hydraulic system
Inside generates the technical issues of impact and vacuum unlubricated startup because of reversion, proposes a kind of circular buffering flow control hydraulic pressure
Valve is commutated in hydraulic system hydraulic pressure by the flow and pressure of hydraulic oil between control valve and hydraulic motor and is cut off or shut down
Cheng Zhong, design realize flow active mode cycle, slow down rotary speed mode by running of hydraulic power oil resistance and control, and pass through work
Make to be arranged between oil circuit and oil return circuit to bypass buffering hydraulic combination unit and play to reduce to invert and impacts and supplement pipeline oil
Effect.
Invention content
The technical problem to be solved by the present invention is to hydraulic motor driving rotating element in hydraulic system because rotary load is stopping
The phenomenon that inertia generation when only providing power, being braked without the external world continues rotation or instant reversal；When continue rotate (open hydraulic
In system) when, for pipeline because pipeline oil is discharged in the passive rotation of hydraulic motor, channel interior generates vacuum or fluid motor section
There is oil starvation situation, without fluid lubricating machinery friction when this can cause hydraulic motor to be again started up, damages hydraulic motor；When instantaneous
When inverting (in closed type hydraulic system) hydraulic pump fuel cut-off or cut-out oil feeding line, because of the passive rotation oil extraction of hydraulic motor,
Instantaneous pressure is generated in pipeline, is reached a certain level so that hydraulic motor reversely rotates, and pipeline forms impacting with high pressure again, damages
Hydraulic Elements and hydraulic oil pipe.
In order to solve the above technical problem, the present invention provides the following technical solutions：
A kind of circular buffering flow control hydraulic valve, including handle, reducer unit, handle spring connecting rod, main valve body, rear valve
Lid, electromagnetic coil, main valve plug spring, main valve plug, circulation loop spool, preceding valve deck, balance gate gurgle valve, response buffering valve, impact
Unloading valve, damping, buffering accumulation of energy auxiliary, resetting spring and L1, L2, L3, L4 abnormal shape oil circuit；Described main valve plug one end and handle
Connection, the other end are connect with main valve plug spring, electromagnetic coil successively；Circulation loop spool one end is connect with resetting spring,
The other end is connect with response buffering valve；It is equipped with the through-hole of connection actuator port and oil return circuit in the circulation loop spool, leads to
Hole one end is connected to the endoporus of response buffering valve, and is connect with the oblique section of response buffering valve；The impact unloading valve, buffering store
It can assist, balance gate gurgle valve is sequentially connected, the bypass oil circuit of composition working oil path and oil return circuit；Reducer unit outlet with
L1 oil circuits communicate so that pressure introduces main valve plug one end, auxiliary control bound core movement after P mouthfuls of high pressure oil decompression；The damping
Be arranged in L3 abnormal shape oil circuits, control circulation loop spool movement when small flow low pressure, when big-flow high-pressure cut-out flow into cycle
The high pressure oil that overflows of circuit spool one end.
Preferably, buffering accumulation of energy satellite interface, which is equipped with, connects accumulator.
When system operation out of service, main valve plug one end electromagnetic coil dead electricity of circular buffering flow control hydraulic valve,
Main valve plug is because oil-control chamber oil pressure declines, the promotion movement of main valve plug spring so that main valve plug has cut off system fuel feeding (P mouthfuls) oil circuit
The access between working oil path (A mouthfuls, B mouthfuls)；Circulation loop spool is reduced in action of reset spring and oil pressure simultaneously, response buffering
Valve pushes the movement of circulation loop spool so that the through-hole of circulation loop spool is connected to A mouthfuls and B mouthfuls of oil circuits；This process is realized original
Hydraulic oil leads to A mouthfuls from P mouthfuls by main valve plug, and A mouthfuls lead to B mouthfuls, and B mouthfuls lead to T journeys of making a slip of the tongue and are converted by circulation loop spool
Internal oilhole connects A mouthfuls and B mouthfuls of oil circuits, and as load inertia rotates, hydraulic oil is in A mouthfuls of oil circuits, B mouthfuls of oil circuits and circulation loop
The inside oilhole formation of spool circulates, and the inside oilhole of circulation loop spool slowly reduces hydraulic flow rates, to slow down rotation
Rotary speed, pipeline is full of hydraulic oil when ensureing final shut down.
When hydraulic motor reverse rotation occurs in system or stop moment generates high-voltage load, by impact unloading valve, buffering
Accumulation of energy satellite interface, balance gate gurgle valve and L4 oil circuits composition realize buffering impacting with high pressure, balance pipeline oil pressure.
Circular buffering flow control hydraulic valve of the present invention, the rotary load executive component for solving hydraulic system offer power exist
The reverse rotation hydraulic shock generated after shutdown and inertial rotation cause the problem of vacuum air inlet in Hydraulic Elements pipeline, and invention carries
A kind of circular buffering flow control hydraulic valve gone out realizes that hydraulic oil exists when hydraulic system stops power or cut-out hydraulic power source
Channel interior cycle is slowly gradually slowed down, the flow control new method for the moment impact that buffer system generates.
Description of the drawings
It further illustrates with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural schematic diagram of the circular buffering flow control hydraulic valve of the present invention；
In figure：1. handle, 2. reducer units, 3. handle spring connecting rods, 4. main valve bodies, valve deck after 5., 6. electromagnetic coils, 7.
Main valve plug spring, 8. main valve plugs, 9. circulation loop spools, valve deck before 10., 11. balance gate gurgle valves, 12. response buffering valves, 13.
Impact unloading valve, 14. dampings, 15. buffering accumulation of energy satellite interfaces, 16. resetting springs.
Fig. 2 is main valve plug (8) schematic diagram of the circular buffering flow control hydraulic valve of the present invention；
In figure：81. oil-control chamber.
Fig. 3 is circulation loop spool (9) schematic diagram of the circular buffering flow control hydraulic valve of the present invention；
In figure：91. through-hole, 92. reseting cavities.
Specific implementation mode
As shown in Figs. 1-3:The invention discloses a kind of circular buffering flow control hydraulic valves, include mainly handle 1, decompression
Valve group 2, handle spring connecting rod 3, main valve body 4, rear valve deck 5, electromagnetic coil 6, main valve plug spring 7, main valve plug 8, circulation loop valve
Core 9, preceding valve deck 10, balance gate gurgle valve 11, response buffering valve 12, impact unloading valve 13, damping 14, buffering accumulation of energy satellite interface
15, resetting spring 16.L1, L2, L3 shown in figure are the special-shaped oil circuit inside main valve body 4, and L4 is the oily access of abnormal shape of rear valve deck, is led to
Multiple fabrication holes are crossed to process to be formed.
There are three mounting surfaces for main valve body 4, connect composition with the mounting surface of reducer unit 2, rear valve deck 5, preceding valve deck 10 respectively
The circular buffering flow control hydraulic valve of dust is whole.4 one end of main valve body as shown in the figure is connect with preceding valve deck, the other end and rear valve
Lid connection, main valve body top are connect with reducer unit.
Handle 1 and handle spring 3, main valve plug 8 connect into three-link mechanism, it can be achieved that 1 different location of main valve plug control
Operation.
8 one end of main valve plug is connect with handle 1, and 8 other end of main valve plug is connect with main valve plug spring 7, electromagnetic coil 6 successively,
Main valve plug 8 is in the force effect of handle spring 3, the force effect of main valve plug spring 7, the force effect of electromagnetic coil 6 and different works
Under force effect of the oil pressure on sectional area under condition, 3 operating positions are formed：Normal orientation (resetting of zero state), small flow are floating
Dynamic state position (being transition state), operating position.
9 one end of circulation loop spool is connect with the resetting spring 16 at preceding valve deck 10, the other end and the sound at rear valve deck 10
Trimmer valve 12 is answered to connect, circulation loop spool 9 is in the force effect of resetting spring 16, the force effect of response buffering valve 12 and resets bullet
Under the force effect of 81 pressure of oil-control chamber of spring 16,3 operating positions are formed：Normal orientation (A mouthfuls of pipelines and B mouthfuls of pipeline connection shapes
It is state, parallel with the working condition of main valve plug 8), quick condition position (parallel with the small flow quick condition of main valve plug 8), work
State position (parallel with the normality of main valve plug 8).When work A oil circuits and B oil circuits are in shutdown, pass through 9 He of circulation loop spool
Response buffering valve 12 acts on, and slow cycle slows down flow velocity and reaches load stopping, and ensures pipeline full of hydraulic oil.
Buffering accumulation of energy auxiliary 15 connect composition by L4 oil circuits with impact unloading valve 13, balance gate gurgle valve 11, reaches buffering
Oil return impact (generates oil return impact) when closed system inverts, the excess traffic of off-load working oil path realizes balancing work oil circuit
Oil pressure and repairing.
The operation principle of circular buffering flow control hydraulic valve is as follows：
Under the conventional sense of circular buffering flow control hydraulic valve, both P mouthfuls of apiezon oils and electromagnetic coil 6 must not electricity condition
When, main valve plug 8 is reset to normal orientation by main valve plug resetting spring 7 and 3 resultant force of handle and connecting rod spring, at this time circular buffering stream
The P mouth oil circuits cut-out of amount control hydraulic valve is connect with power oil feed line, and T mouthfuls of oil circuits cut off and connect fuel tank piping connection, follow
Loop back path spool 9 is under the effect of the resetting spring 16 of response buffering valve 12 and circulation loop spool 9, A mouthfuls of oil circuits and B mouthfuls of hydraulic pressure
Oil is connected to by circular buffering spool 9, this state makes the rotation executive component for connecting A mouthfuls of oil circuits and B mouthfuls of oil circuits lower
Under hydraulic pressure itself flow resistance, maintain to be full of hydraulic oil inside pipeline and hydraulic motor.
System fuel feeding, i.e., to P mouthfuls offer hydraulic oil so that at P mouthful oil pressure rising, and electromagnetic coil 6 not it is electric when, P
The hydraulic oil of mouth is depressurized through reducer unit 2, the oil-control chamber 81 of main valve plug is entered by L1 oil circuits, then through L3 oil circuits, pass through damping
14 decompressions enter the reseting cavity 92 where resetting spring 16, effect of the circulation loop spool 9 in resetting spring 16 and decompression oil pressure
The force balance of resultant force and response buffering valve 12 is connected between the A mouth oil circuits and B mouthfuls of oil circuits of closing circulation loop spool 9
Access；As P mouthfuls of oil pressure rise, main valve plug 8 reaches setting decompression upper limit value, the oil of oil-control chamber 81 by the oil pressure of oil-control chamber 81
Active force and 7 force balance of main valve plug spring, main valve plug 8 is pressed to reach small flow quick condition position so that hydraulic oil is from P mouthfuls
A mouthfuls and B mouthfuls of pipeline oils are supplemented to, extra hydraulic oil is flowed by the B mouthfuls of impact off-loads 13 connected, L4 pipelines, balance gate gurgle valve 11
To T mouthfuls of oil circuit off-loads.At this point, main valve plug 8 maintains small flow quick condition, and A mouthfuls are full of hydraulic pressure with B mouthfuls of connecting lines
Oil.
When system fuel feeding, when electromagnetic coil 6 must be electric, main valve plug 8 is moved to operating position because of the active force of electromagnetic coil 6
State, P mouthfuls of oil circuits lead to A mouthfuls of oil circuits, and B mouthfuls of oil circuits lead to T mouthfuls of oil.Rotary load element or fan blade operating.
Stop rotating executive component operating operation order 6 dead electricity of electromagnetic coil in order to control, halt system fuel feeding.Control
When 6 dead electricity of electromagnetic coil, rotary load element or fan blade operating show as the rotating speed operated and decline；When system fuel feeding stops, rotation
The rotating speed for turning load elements or fan blade further slowly tapers off.
Fig. 1 is a kind of circular buffering flow control hydraulic valve provided by the invention, and the control method of above-mentioned the present embodiment is suitable
For enclosed and open type hydraulic system.Present invention P mouths as shown in the figure and the T mouthfuls of oil outlets for connecing hydraulic pump source respectively and oil return
Mouthful, A mouthfuls and the B mouthfuls of oil inlets and oil outlet for connecing hydraulic motor respectively.Especially for closed system in circular buffering flow control
6 dead electricity of electromagnetic coil of hydraulic valve processed, and when halt system fuel feeding, because the inertia of rotary load element makes B mouthfuls of pipeline moments
Boosting reaches a certain level to form rotating element reversion, this process transient peak is higher all to have an impact pipeline, hydraulic motor.
Circular buffering flow control hydraulic valve of the present invention is to impact off-load 13 and the balance gate gurgle valve that this solution to the problem is at B mouthfuls
The problem of 11 realization shock absorbing, and buffering accumulation of energy satellite interface 15 is added, it is slow to connect corresponding accumulator according to impact degree
Rush the high pressure and supplement leakage hydraulic oil of moment.Handle 1 is used for emergency flight control.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (2)
1. a kind of circular buffering flow control hydraulic valve, including handle (1), reducer unit (2), handle spring connecting rod (3), main valve
Body (4), rear valve deck (5), electromagnetic coil (6), main valve plug spring (7), main valve plug (8), circulation loop spool (9), preceding valve deck
(10), balance gate gurgle valve (11), response buffering valve (12), impact unloading valve (13), damping (14), buffering accumulation of energy auxiliary (15),
Resetting spring (16) and L1, L2, L3, L4 abnormal shape oil circuit；Described main valve plug (8) one end is connect with handle (1), and the other end is successively
It is connect with main valve plug spring (7), electromagnetic coil (6)；Described circulation loop spool (9) one end is connect with resetting spring (16), separately
One end is connect with response buffering valve (12)；The logical of connection actuator port and oil return circuit is equipped in the circulation loop spool (9)
Hole (91), through-hole (91) one end are connected to the endoporus of response buffering valve (12), and are connect with the oblique section of response buffering valve (12)；
The impact unloading valve (13), buffering accumulation of energy auxiliary (15), balance gate gurgle valve (11) are sequentially connected, and form working oil path and oil return
The bypass oil circuit of oil circuit；Reducer unit (2) outlet is communicated with L1 oil circuits so that pressure introduces master after P mouthfuls of high pressure oil decompression
Spool one end, auxiliary control bound core (8) are mobile；The damping (14) is arranged in L3 abnormal shape oil circuits, small flow low pressure time control
Circulation loop spool (9) processed is mobile, when big-flow high-pressure cut-out flow into the high pressure oil that overflows of circulation loop spool (9) one end.
2. circular buffering flow control hydraulic valve according to claim 1, which is characterized in that buffering accumulation of energy satellite interface (15)
Equipped with connecing accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810737963.8A CN108799234B (en) | 2018-07-06 | 2018-07-06 | Circulation buffering flow control hydraulic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810737963.8A CN108799234B (en) | 2018-07-06 | 2018-07-06 | Circulation buffering flow control hydraulic valve |
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| Publication Number | Publication Date |
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| CN108799234A true CN108799234A (en) | 2018-11-13 |
| CN108799234B CN108799234B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810737963.8A Active CN108799234B (en) | 2018-07-06 | 2018-07-06 | Circulation buffering flow control hydraulic valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538568A (en) * | 2019-01-16 | 2019-03-29 | 安徽江淮专用汽车有限公司 | A kind of buffer protection of compression type garbage truck proposes effect system |
| CN109578298A (en) * | 2019-01-23 | 2019-04-05 | 宋丽丽 | The full-automatic anticollision fan motor of hydraulic control start and stop |
| CN110273392A (en) * | 2019-04-16 | 2019-09-24 | 四川大学 | A kind of adaptive lifting deceleration strip |
| CN112648251A (en) * | 2020-12-22 | 2021-04-13 | 天水锻压机床(集团)有限公司 | Automatic liquid supplementing hydraulic valve of energy accumulator for large-scale bending machine |
| CN113217496A (en) * | 2021-05-19 | 2021-08-06 | 刘含 | Hydraulic valve with function of controlling liquid flow speed and using method |
| CN116044742A (en) * | 2023-03-28 | 2023-05-02 | 常州凯鹏液流器材有限公司 | Radiator adopting oil pump system and working method thereof |
| CN116447190A (en) * | 2023-06-14 | 2023-07-18 | 江苏曹工液压科技有限公司 | Hydraulic valve capable of flexibly reversing |
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| US4555974A (en) * | 1983-09-02 | 1985-12-03 | Pneumo Corporation | Servo actuator control/damping mechanism and method |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| EP3029325A1 (en) * | 2014-12-02 | 2016-06-08 | Mitsubishi Heavy Industries, Ltd. | Spool valve, hydraulic machine, and wind turbine power generating apparatus |
| CN107672575A (en) * | 2017-09-01 | 2018-02-09 | 金勇� | Electric control braking valve |
| CN208764011U (en) * | 2018-07-06 | 2019-04-19 | 秦皇岛首创思泰意达环保科技有限公司 | A kind of circular buffering flow control hydraulic valve |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4555974A (en) * | 1983-09-02 | 1985-12-03 | Pneumo Corporation | Servo actuator control/damping mechanism and method |
| CN102777438A (en) * | 2012-08-17 | 2012-11-14 | 邓开忠 | Multifunctional integrated valve bank of hydraulic motor |
| EP3029325A1 (en) * | 2014-12-02 | 2016-06-08 | Mitsubishi Heavy Industries, Ltd. | Spool valve, hydraulic machine, and wind turbine power generating apparatus |
| CN107672575A (en) * | 2017-09-01 | 2018-02-09 | 金勇� | Electric control braking valve |
| CN208764011U (en) * | 2018-07-06 | 2019-04-19 | 秦皇岛首创思泰意达环保科技有限公司 | A kind of circular buffering flow control hydraulic valve |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538568A (en) * | 2019-01-16 | 2019-03-29 | 安徽江淮专用汽车有限公司 | A kind of buffer protection of compression type garbage truck proposes effect system |
| CN109538568B (en) * | 2019-01-16 | 2023-08-04 | 安徽江淮专用汽车有限公司 | Buffer protection efficiency improving system of compression garbage truck |
| CN109578298A (en) * | 2019-01-23 | 2019-04-05 | 宋丽丽 | The full-automatic anticollision fan motor of hydraulic control start and stop |
| CN109578298B (en) * | 2019-01-23 | 2024-03-19 | 宋丽丽 | Hydraulic control start-stop full-automatic anti-collision fan motor |
| CN110273392A (en) * | 2019-04-16 | 2019-09-24 | 四川大学 | A kind of adaptive lifting deceleration strip |
| CN112648251A (en) * | 2020-12-22 | 2021-04-13 | 天水锻压机床(集团)有限公司 | Automatic liquid supplementing hydraulic valve of energy accumulator for large-scale bending machine |
| CN113217496A (en) * | 2021-05-19 | 2021-08-06 | 刘含 | Hydraulic valve with function of controlling liquid flow speed and using method |
| CN113217496B (en) * | 2021-05-19 | 2022-06-14 | 宁波隆而法液压有限公司 | Hydraulic valve with function of controlling liquid flow speed and using method |
| CN116044742A (en) * | 2023-03-28 | 2023-05-02 | 常州凯鹏液流器材有限公司 | Radiator adopting oil pump system and working method thereof |
| CN116447190A (en) * | 2023-06-14 | 2023-07-18 | 江苏曹工液压科技有限公司 | Hydraulic valve capable of flexibly reversing |
| CN116447190B (en) * | 2023-06-14 | 2023-09-08 | 江苏曹工液压科技有限公司 | Hydraulic valve capable of flexibly reversing |
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| Publication number | Publication date |
|---|---|
| CN108799234B (en) | 2024-05-10 |
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