CN110056505A - A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering - Google Patents
A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering Download PDFInfo
- Publication number
- CN110056505A CN110056505A CN201810048198.9A CN201810048198A CN110056505A CN 110056505 A CN110056505 A CN 110056505A CN 201810048198 A CN201810048198 A CN 201810048198A CN 110056505 A CN110056505 A CN 110056505A
- Authority
- CN
- China
- Prior art keywords
- chamber
- oil
- safety valve
- hole
- slide valve
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/10—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C14/12—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C15/064—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps
Abstract
The invention discloses a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering, including rear cover and the pump housing, safety valve complement, oil distribution casing and high pressure cargo tank are equipped in the pump housing, the front end of safety valve complement is the slide valve ante-chamber equipped with oil-through hole C and damping hole, the rear end of safety valve complement is the slide valve back cavity equipped with oil-through hole D, and slide valve reset spring is connected between the rear end and the pump housing of safety valve complement；Space between stator on oil distribution casing and variable ring is B chamber and C chamber, and wherein B chamber is connected with slide valve ante-chamber, and C chamber is connected with slide valve back cavity；High pressure cargo tank is equipped with A chamber, and the side of A chamber is connected with slide valve ante-chamber, and the other side is connected with C chamber.The present invention has rational design, and structure is simple, at low cost, can be by payload size flow automatic regulation, can be according to automobile driving speed flow automatic regulation on the automobile, and flow is big when making low speed, turns to light；Flow is small when high speed, and steering wheel is not unstable, and intact stability is good.It is recycled inside hydraulic steering pump moreover, oil liquid can be reduced, reduces oil liquid fever and energy consumption, while engine power consumption can be reduced, energy-saving effect is good, can promote the use of.
Description
Technical field
The invention belongs to hydraulic pump technical fields, and in particular to a kind of limited pressure internal feedback energy-saving hydraulic power steering
Pump.
Background technique
Steering hydraulic boost pump is a crucial dynamical element of automobile steering system, and effect is mentioned for steering system
For power, mitigate labor intensity when driver turns to.
There are oil inlet (inlet port) and oil outlet (press oil port) oil inlet to pass through oil pipe and fuel tank on steering hydraulic boost pump
Connection.Oil outlet is connect by oil pipe with turning machine.There are also rotor, pump shaft and belt pulleys on steering blade pump.Engine crankshaft
Belt pulley imparts power to steering pump pulley by belt.Belt pulley imparts power to pump shaft.Pump shaft will by spline
Power passes to rotor.Rotor rotation makes the hydraulic oil sucked from fuel tank generate certain pressure output to turning to by compression
Machine.There are the force-transmitting parts such as oil cylinder, pull rod in turning machine.Before pressure oil pushes oil cylinder to push automobile using a series of force transmission mechanisms
Wheel rotation achievees the purpose that help to turn to.Most of existing steering hydraulic boost pump is constant displacement pump, the disadvantage is that oil liquid is easily sent out
Heat, energy loss are big.
Summary of the invention
The purpose of the present invention is to provide a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering, to solve above-mentioned back
The problem of proposed in scape technology.
To achieve the above object, the present invention is the following technical schemes are provided: a kind of limited pressure internal feedback energy-saving hydraulic turns to
Boost pump, including rear cover and the pump housing, structural feature are: rear cover is equipped with oil inlet, oil-through hole A and oil-through hole B；It is set in the pump housing
There are safety valve complement, oil distribution casing and high pressure cargo tank, the front end of safety valve complement is before the slide valve equipped with oil-through hole C and damping hole
The rear end of chamber, safety valve complement is the slide valve back cavity equipped with oil-through hole D, and is connected between the rear end and the pump housing of safety valve complement
Slide valve reset spring；Oil distribution casing is equipped with variable ring, stator, rotor and several blades, and wherein the surface of oil distribution casing is equipped with oil suction
Window, pressure oil window and throttle orifice, variable ring is interior to be equipped with the elongated slot with quad seal item, and variable ring is turned by positioning pin and stator
Dynamic connection, and the space between stator and variable ring is divided into B chamber and C chamber by quad seal item and positioning pin, wherein B chamber passes through
Oil-through hole A, oil-through hole B and oil-through hole C are connected with slide valve ante-chamber, and C chamber is connected by oil-through hole D with slide valve back cavity, rotor
It is rotatably set to stator interior by pump shaft, and blade is slidably disposed in rotor；High pressure cargo tank is equipped with A chamber, A chamber
Side is connected by oil-through hole E and damping hole with slide valve ante-chamber, and the other side is connected by throttle orifice with C chamber, and high pressure oil
The side in cabin is equipped with oil outlet.
Preferably, safety valve complement includes slide valve and safety valve, the side of slide valve is the cavity with opening, safety valve
It being movably arranged in cavity, the head end of safety valve passes sequentially through steel ball, support nail and safety valve spring and is flexibly connected with cavity,
The tail end of safety valve is equipped with safety valve adjusting nut, and wherein the diameter of safety valve adjusting nut is greater than the diameter of cavity, and safety
Pressure adjusting pad piece is equipped between valve regulation nut and slide valve.
Preferably, stator and rotor eccentricity are arranged, and stator reset is connected between the side of stator and variable ring
Spring.
Preferably, the quantity of blade is 11.
Preferably, being equipped with circular seal item in quad seal item.
Preferably, the pressure value of A chamber is P1, the pressure value of B chamber is P1, and the pressure value of C chamber is P2, and P1 and P2
It is worth not identical.
Compared with prior art, the present invention has rational design, and structure is simple, at low cost, can automatically adjust and flow by payload size
Amount, can be according to automobile driving speed flow automatic regulation on the automobile, and flow is big when making low speed, turns to light；It is flowed when high speed
Measure small, steering wheel is not unstable, and intact stability is good.It is recycled inside hydraulic steering pump moreover, oil liquid can be reduced, reduces oil
Liquid fever and energy consumption, while engine power consumption can be reduced, energy-saving effect is good, can promote the use of.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rear cover of the present invention；
Fig. 2 is the A-A structural schematic diagram of Fig. 1；
Fig. 3 is the B-B structural schematic diagram of Fig. 1；
Fig. 4 is the structural schematic diagram of oil distribution casing of the present invention；
Fig. 5 is the working principle of the invention schematic diagram；
Fig. 6 is the partial enlargement diagram of the part I in Fig. 5；
Fig. 7 is the operation principle schematic diagram of rotor of the present invention；
Fig. 8 is the structural schematic diagram of slide valve of the present invention；
In figure: 1- oil inlet, 2- oil-through hole A, 3- oil-through hole B, 4- oil distribution casing, 6- support nail, 7- slide valve, 8- oil-through hole C,
9- damping hole, 10- slide valve ante-chamber, 11- oil-through hole D, 12- slide valve back cavity, 13- variable ring, 14- stator, 15- rotor, 16- leaf
Piece, 17- oil sucking window, 18- pressure oil window, 19- throttle orifice, 20- quad seal item, 21- elongated slot, 22- positioning pin, 23-B chamber,
24-C chamber, 25- pump shaft, 26- high pressure cargo tank, 27-A chamber, 28- oil-through hole E, 29- oil outlet, 30- slide valve reset spring, 31- peace
Full valve spring, 32- safety valve, 33- stator reset spring, 34- circular seal item, 35- oil suction area, the laminated oil zone 36-, 37- steel ball,
38- valve seat orifice, 39- safety valve adjusting nut, 40- pressure adjusting pad piece.
Specific embodiment
Explanation that the present invention will be further explained with reference to the accompanying drawing, but do not limit the scope of the invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "left", "right", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
Fig. 1-8 is please referred to, the present invention provides a kind of technical solution, a kind of limited pressure internal feedback energy-saving hydraulic power steering
Pump, including rear cover and the pump housing, the rear cover are equipped with oil inlet 1, oil-through hole A2 and oil-through hole B3；Peace is equipped in the pump housing
Full valve assembly, oil distribution casing 4 and high pressure cargo tank 26, safety valve complement, the front end of the safety valve complement are equipped with oil-through hole C8
Rear end with the slide valve ante-chamber 10 of damping hole 9, safety valve complement is the slide valve back cavity 12 equipped with oil-through hole D11, and safety valve is total
At rear end and the pump housing between be connected with slide valve reset spring 30；Oil distribution casing 4, the oil distribution casing 4 are equipped with variable ring 13, determine
Son 14, rotor 15 and several blades 16, wherein the surface of oil distribution casing 4 is equipped with oil sucking window 17, pressure oil window 18 and throttle orifice 19,
The elongated slot 21 with quad seal item 20 is equipped in variable ring 13, variable ring 13 is rotatablely connected by positioning pin 22 and stator 14, and
Space between stator 14 and variable ring 13 is divided into B chamber 23 and C chamber 24 by quad seal item 20 and positioning pin 22, wherein B chamber
23 are connected by oil-through hole A2, oil-through hole B3 and oil-through hole C8 with slide valve ante-chamber 10, and C chamber 24 passes through oil-through hole D11 and slide valve
Back cavity 12 is connected, and rotor 15 is rotatably set to inside stator 14 by pump shaft 25, and blade 16 is slidably disposed in and turns
In son 15；High pressure cargo tank 26, the high pressure cargo tank 26 are equipped with A chamber 27, and the side of A chamber 27 passes through oil-through hole E28 and damping hole 9
It is connected with slide valve ante-chamber 10, the other side is connected by throttle orifice 19 with C chamber 24, and the side of high pressure cargo tank 26 is equipped with fuel-displaced
Hole 29.
Wherein, in the present embodiment, the safety valve complement includes slide valve 7 and safety valve 32, and the side of slide valve 7 is band
The cavity of opening, safety valve 32 are movably arranged in cavity, and the head end of safety valve 32 passes sequentially through steel ball 37,6 and of support nail
Safety valve spring 31 is flexibly connected with cavity, and the tail end of safety valve 32 is equipped with safety valve adjusting nut 39, wherein safe valve regulation
The diameter of nut 39 is greater than the diameter of cavity, and pressure adjusting pad piece 40 is equipped between safety valve adjusting nut 39 and slide valve 7.
Wherein, in the present embodiment, the stator 14 and 15 eccentric setting of rotor, and the side of stator 14 and variable ring
Stator reset spring 33 is connected between 13.
Wherein, in the present embodiment, 16 quantity of the blade are 11.
Wherein, in the present embodiment, circular seal item 34 is equipped in the quad seal item 20, circular seal item 34 mentions
For elastic force, realizes quad seal item 20 and positioning pin 22 by 14 outer circle reliable contacts of stator and seal.
Wherein, in the present embodiment, the pressure value of the A chamber 27 is P1, and the pressure value of B chamber 23 is P1, the pressure of C chamber 24
Force value is P2, and the value of P1 and P2 is not identical.
The working principle of the invention: Fig. 5-6 is please referred to, when hydraulic steering pump works, with the rotation of rotor 15, leaf
Piece 16 slides in rotor 15.Due to stator 14 and 15 eccentric setting of rotor, there is an eccentricity between stator 14 and rotor 15,
Changing the enclosed volume being made of the pump housing, oil distribution casing 4, stator 14, rotor 15 and blade 16 constantly.In 35 volume of oil suction area
Constantly increase and form vacuum, hydraulic oil is sucked in by the oil sucking window 17 on oil distribution casing 4, is constantly subtracted to 36 volume of laminated oil zone
Small (since the elasticity modulus of oil liquid is very big, can approximatively think that oil liquid is incompressible under normal circumstances) extra oil liquid is pressed
Out.It is flowed in A chamber 27 by two annular pressure oil windows 18 on oil distribution casing 4, forming pressure is P1.The pressure oil of A chamber 27
For two parts: a part flows to slide valve ante-chamber 10 through oil-through hole E28 and damping hole 9, and another part flows to C chamber by throttle orifice 19
24.The effect of damping hole 6 is to increase oil liquid flow resistance, reduces hydraulic shock, keeps slide valve 7 mobile steady.
When hydraulic steering pump revolving speed is lower, since 27 pressure P1 of A chamber is lower, slide valve 7 is remained stationary, excessively oily at this time
Hole C8 is blocked by slide valve 7.High pressure oil cannot be introduced into B chamber 23, and stator 14 remains stationary, with the raising of revolving speed, 27 oil liquid of A chamber
Increase, while pressure P1 also increases, increase by the pressure difference at 19 both ends of throttle orifice,
That is △ P=P1-P2, as P1A1 >=P2A1+K1X1,
Wherein 23 pressure of P1-B chamber
24 pressure of P2-C chamber
The active area of A1-slide valve 7
K1-slide valve reset spring 30 rigidity
30 precompressed amount of X1-slide valve reset spring
The initial equilibrium conditions of slide valve 7 are destroyed, and slide valve 7 starts mobile to the back-end.With hydraulic steering pump revolving speed
It further increases, the amount of movement of slide valve 7 increases, and when the front end face of slide valve 7 is more than the edge of oil-through hole C8, high pressure oil is by oil
Hole C8 flows to B chamber 23, makes when P1 increases to
When P1A2 >=P2A2+K2X2,
33 precompressed amount of X2-stator reset spring
Stator 14 starts, the eccentricity reduction of stator 14 and rotor 15 mobile to 24 direction of C chamber, hydraulic steering pump
Discharge capacity also reduces, and the oil liquid of output also reduces therewith.
When loading increase, the operating pressure of hydraulic steering pump also increases.Such as when beating direction to extreme position, turn
Oil liquid is no longer needed into Oil cylinder, the oil outlet 29 for being equivalent to hydraulic steering pump is closed.Hydraulic steering pump at this time
Pressure P2 increase.
As P2A3 >=K3X3
The wherein projected area of the steel ball 37 on A3-safety valve 32 and 38 contact position of valve seat orifice
31 rigidity of K3-safety valve spring
31 precompressed amount of X3-safety valve spring
Steel ball 37 is open, and oil liquid flows back to low pressure chamber by valve seat orifice 38, limits further increasing for oil liquid pressure, this
It is exactly the principle of " pressure limiting ".
Hydraulic steering pump uses internal feedback mode, is oil extraction pressure and flow by hydraulic steering pump itself
It pushes stator 14 to rotate around positioning pin 22, makes stator, 1 changes with the eccentricity of rotor 15, to make hydraulic power-assisted steering
The discharge capacity and flow of pump reduce, therefore internal feedback hydraulic steering pump structure is simple, at low cost.It simultaneously can be by payload size certainly
It is dynamic to adjust flow, can be according to automobile driving speed flow automatic regulation on automobile, flow is big when making low speed, turns to light；
Flow is small when high speed, and steering wheel is not unstable, and intact stability is good.It is followed inside hydraulic steering pump moreover, oil liquid can be reduced
Ring reduces oil liquid fever and energy consumption, while can reduce engine power consumption, and energy-saving effect is good, can promote the use of.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention, and any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering, including rear cover and the pump housing, it is characterised in that:
The rear cover is equipped with oil inlet, oil-through hole A and oil-through hole B；
It is equipped in the pump housing
The front end of safety valve complement, the safety valve complement is the slide valve ante-chamber equipped with oil-through hole C and damping hole, and safety valve is total
At rear end be the slide valve back cavity equipped with oil-through hole D, and be connected between the rear end and the pump housing of safety valve complement slide valve reset bullet
Spring；
Oil distribution casing, the oil distribution casing are equipped with variable ring, stator, rotor and several blades, and wherein the surface of oil distribution casing is equipped with
Oil sucking window, pressure oil window and throttle orifice, variable ring is interior to be equipped with the elongated slot with quad seal item, and variable ring is by positioning pin and determines
Son is rotatablely connected, and the space between stator and variable ring is divided into B chamber and C chamber by quad seal item and positioning pin, wherein B chamber
It is connected by oil-through hole A, oil-through hole B and oil-through hole C with slide valve ante-chamber, C chamber is connected by oil-through hole D with slide valve back cavity,
Rotor is rotatably set to stator interior by pump shaft, and blade is slidably disposed in rotor；
High pressure cargo tank, the high pressure cargo tank are equipped with A chamber, and the side of A chamber is connected by oil-through hole E and damping hole with slide valve ante-chamber
Logical, the other side is connected by throttle orifice with C chamber, and the side of high pressure cargo tank is equipped with oil outlet.
2. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that: described
Safety valve complement include slide valve and safety valve, the side of slide valve is the cavity that band is open, and safety valve is movably arranged in cavity
Interior, the head end of safety valve passes sequentially through steel ball, support nail and safety valve spring and is flexibly connected with cavity, and the tail end of safety valve is equipped with
Safety valve adjusting nut, wherein the diameter of safety valve adjusting nut is greater than the diameter of cavity, and safety valve adjusting nut and slide valve
Between be equipped with pressure adjusting pad piece.
3. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that: described
Stator and rotor eccentricity be arranged, and stator reset spring is connected between the side of stator and variable ring.
4. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that: described
Blade quantity be 11.
5. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that: described
Quad seal item in be equipped with circular seal item.
6. a kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering according to claim 1, it is characterised in that: described
The pressure value of A chamber be P1, the pressure value of B chamber is P1, and the pressure value of C chamber is P2, and the value of P1 and P2 is not identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048198.9A CN110056505B (en) | 2018-01-18 | 2018-01-18 | Pressure-limiting type internal feedback energy-saving hydraulic steering power-assisted pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048198.9A CN110056505B (en) | 2018-01-18 | 2018-01-18 | Pressure-limiting type internal feedback energy-saving hydraulic steering power-assisted pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110056505A true CN110056505A (en) | 2019-07-26 |
| CN110056505B CN110056505B (en) | 2022-03-29 |
Family
ID=67315166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810048198.9A Active CN110056505B (en) | 2018-01-18 | 2018-01-18 | Pressure-limiting type internal feedback energy-saving hydraulic steering power-assisted pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110056505B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111643824A (en) * | 2020-07-03 | 2020-09-11 | 王秋俐 | Mechanical high-rise escape and daily use system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020037227A1 (en) * | 2000-09-26 | 2002-03-28 | Hiroshi Kato | Oil pump apparatus |
| CN2797687Y (en) * | 2005-06-11 | 2006-07-19 | 郭羽 | Automobile steering power-assisted pump |
| CN202417937U (en) * | 2011-12-29 | 2012-09-05 | 全兴精工集团有限公司 | Power steering pump |
| CN107091227A (en) * | 2017-05-17 | 2017-08-25 | 奇瑞汽车股份有限公司 | A kind of steering pump, hydraulic power-assist steering system and automobile |
| CN207761941U (en) * | 2018-01-18 | 2018-08-24 | 江苏德尔森汽车有限公司 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
-
2018
- 2018-01-18 CN CN201810048198.9A patent/CN110056505B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020037227A1 (en) * | 2000-09-26 | 2002-03-28 | Hiroshi Kato | Oil pump apparatus |
| CN2797687Y (en) * | 2005-06-11 | 2006-07-19 | 郭羽 | Automobile steering power-assisted pump |
| CN202417937U (en) * | 2011-12-29 | 2012-09-05 | 全兴精工集团有限公司 | Power steering pump |
| CN107091227A (en) * | 2017-05-17 | 2017-08-25 | 奇瑞汽车股份有限公司 | A kind of steering pump, hydraulic power-assist steering system and automobile |
| CN207761941U (en) * | 2018-01-18 | 2018-08-24 | 江苏德尔森汽车有限公司 | A kind of limited pressure internal feedback energy-saving hydraulic power assistance pump for steering |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111643824A (en) * | 2020-07-03 | 2020-09-11 | 王秋俐 | Mechanical high-rise escape and daily use system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110056505B (en) | 2022-03-29 |
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