CN106015023A - Single-shaft electro-hydraulic steering pump - Google Patents
Single-shaft electro-hydraulic steering pump Download PDFInfo
- Publication number
- CN106015023A CN106015023A CN201610513184.0A CN201610513184A CN106015023A CN 106015023 A CN106015023 A CN 106015023A CN 201610513184 A CN201610513184 A CN 201610513184A CN 106015023 A CN106015023 A CN 106015023A
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- Prior art keywords
- oil
- bearing
- motor
- sealing
- pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- 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
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a single-shaft electro-hydraulic steering pump which comprises a hydraulic pump and a motor, wherein a pump body of the hydraulic pump is fixedly mounted on a motor shell of the motor; an impeller of the hydraulic pump and a rotor of the motor are both mounted on a transmission shaft; the pump body comprises an impeller cavity and an end cover; the end cover is arranged on the end surface of the motor side of the impeller cavity, and combined with such end surface into a whole; a bearing cavity is formed in the center of the end cover; a convex ring is arranged at the bottom of the bearing cavity; a noise-reducing layer is arranged on the inner wall, facing the motor side, of the end cover, and made of a composite noise-reducing material; a bearing is mounted at the middle part of the transmission and in the bearing cavity of the pump body in a matched manner; and a wave spring is arranged between the convex ring and the end surface of the sealing bearing. In order to overcome defects in the prior art, the single-shaft electro-hydraulic steering pump being smaller in size, smaller in number of parts, lower in noise and lighter in weight is provided. According to the single-shaft electro-hydraulic steering pump, the number of parts is smaller, the reliability is higher, the potential fault that transmission fails is avoided, and the production cost can be reduced.
Description
Technical field
The present invention relates to hydraulic steering pump field, particularly a kind of single shaft electrohydraulic steering pump.
Background technology
Now, so that the sustainable development of China's economy, promoting new-energy automobile is the very important Strategic Measures of China's sustainable economic development.
The motor transmission shaft of existing traditional electrohydraulic steering pump is connected by flat recess/spline/pin/shaft coupling with fluid-link steering pump drive shaft, make the fluid-link steering pump drive shaft of electrohydraulic steering pump assembly, motor transmission shaft is two parts, when the connection member of fluid-link steering pump drive shaft with motor transmission shaft breaks down, arise that transmission failure, and connection member can consume the power of motor of a part, transmission efficiency reduces, and increase volume and the weight of electrohydraulic steering pump assembly, gap is had between fluid-link steering pump drive shaft and motor transmission shaft, the noise that can make drive disk assembly strengthens, reduce the comfortableness taken.And new forms of energy vehicle is harsher to noise requirements, especially pure electric vehicle type is the strictest to noise requirements.
Summary of the invention
The deficiency existed for above-mentioned electrohydraulic steering pump, the technical purpose of the present invention is to provide the single shaft electrohydraulic steering pump that a kind of volume is less, amount of parts less, noise is less, weight is lighter, the amount of parts of this single shaft electrohydraulic steering pump is less, reliability is higher, avoid the potential faults of transmission failure, and production cost can be reduced.
The present invention is achieved through the following technical solutions:
A kind of single shaft electrohydraulic steering pump, including: hydraulic pump and motor, the pump housing of hydraulic pump is fixedly mounted on the motor casing of motor, and the impeller of hydraulic pump and the rotor of motor are installed on power transmission shaft.
In technique scheme, motor casing refers to cylinder blanket rather than the electric motor end cap of motor, the electrohydraulic steering pump of this structure does not has the drive end bearing bracket of motor, the end face of the pump housing directly coordinates installation with motor casing, thus eliminates motor front end cover, and motor shares same power transmission shaft with hydraulic pump, reduce amount of parts, significantly reduce the overall weight of single shaft electrohydraulic steering pump so that transmission efficiency is higher, reduce production cost, reduce noise, more compact structure；Motor and hydraulic pump share same power transmission shaft it can be avoided that alignment error problem between power transmission shaft, it is to avoid the problem that two axle axialities are inconsistent.
Further, the described pump housing includes wheel cavity and end cap, and end cap is located at the end face of the motor side of wheel cavity and becomes an entirety, and the center of end cap is provided with bearing bore, and the bottom of bearing bore is provided with bulge loop；End cap is provided with noise reduction layer towards the inwall of motor side, and the material of described noise reduction layer is compound noise-reducing material.
In technique scheme, by end cap being located at the end face of the motor side of wheel cavity, and it is integral type structure so that the parts of the pump housing are less, and the bulge loop being provided with bottom bearing bore can carry out axial equipotential to the bearing of bearing intracavity；The noise reduction layer being provided with can be substantially reduced motor and bearing rotates the noise sent.
Further, the middle part of described power transmission shaft coordinates with the bearing bore on the pump housing and is provided with bearing.
In technique scheme, being provided with bearing by coordinating at bearing bore, power transmission shaft is supported by bearing, so that power transmission shaft reliably operates.
Further, described bearing is for sealing bearing or rolling bearing or sliding bearing.
In technique scheme, seal bearing and be prevented from the entrance of introduced contaminants so that the service life of bearing is longer；Rolling bearing structure is simple, runs noise low；The supportive of sliding bearing is preferable, and reliability is higher, when design, selects one of which bearing.
Further, it is provided with wavy spring between described bulge loop and the end face sealing bearing.
In technique scheme, by being provided with wavy spring between bulge loop and the end face of bearing, bearing can be provided and axially support by wavy spring, thus prevents bearing axial motion so that the installation to bearing is relatively reliable, improves bearing and the reliability of pump assembly.
Further, the center of described end cap is provided with groove, and groove is located between sealing bearing and the impeller of hydraulic pump, is provided with and coordinates the oil sealing installed with power transmission shaft in groove.
In technique scheme, coordinate, by being provided with in the groove of end cap, the oil sealing installed with power transmission shaft, thus avoid the medium of fluid-link steering transport pump to enter in end cap, thus in bearing enters into motor so that hydraulic steering pump and motor can safe handlings.
Further, described oil sealing includes body in oil sealing ectosome and oil sealing, and in oil sealing, body is internal outside being located at oil sealing；
nullThe cross section of oil sealing ectosome is rectangle，The bottom of oil sealing ectosome is provided with 2～6 layers of sealing lip，Can be 3/4/5 layer，The air side of oil sealing ectosome is provided with dust excluder lips，The outside of oil sealing ectosome is provided with U-shaped skeleton，U-shaped skeleton includes left side ring、Right side ring and urceolus，The oily side of urceolus and air side are separately installed with left side ring and right side ring，Left side ring and right side ring embed in oil sealing rubber，It is crimp design that oil sealing rubber does not embed the part of left side ring and right side ring，The medium position of outer drum outer wall is provided with oil sealing rubber，The inwall of oil sealing ectosome is provided with A fuel feed hole and the A oil outlet at 180 ° of interval，It is supported by becket in A fuel feed hole and A oil outlet，Avoid under the oil sealing rubber effect of elastomer, oilhole being closed，A fuel feed hole and A oil outlet are located between the gap of sealing lip，A fuel feed hole is with the quantity of A oil outlet fewer than the number of plies of sealing lip one.
In technique scheme, the sealing lip of the multilamellar of the oil sealing ectosome of oil sealing can carry out multi-level sealing, and this multi-level sealing compact conformation to power transmission shaft, thus ensures the reliability of oil sealing；Owing to, after oil seal failure, the medium of pump end is in the case of being little to make any reaction, it is possible to quickly enter in motor, it is therefore necessary to a kind of seal form more relatively reliable than common oil sealing will be used；U-shaped skeleton on oil sealing ectosome can play the effect supporting whole oil sealing parts, coordinates installation to fix with the pump housing；The crimp design part of the oil sealing rubber of oil sealing ectosome both sides can carry out a certain degree of flexible；By making medium to flow by the annular chamber between sealing lip at A fuel feed hole and A oil outlet, thus take away the heat that sealing lip produces with transmission shaft friction, increase the reliability of oil sealing, be substantially reduced the aging speed of sealing lip, extend the use time of sealing lip；It should be noted that the velocity of rotation of power transmission shaft is the fastest, the heat of generation is the most, and heat too much can not be discharged in time and the temperature of sealing lip will be made to improve rapidly, is substantially reduced the use time of sealing lip；And in the cavity being sealed between tight motor and hydraulic steering pump of the pump in the present invention, atmosphere draught-free, more it is difficult to discharge fricative heat.
Further, in described oil sealing, body includes annular air-pocket and metal oil ring, the cooperation of metal oil ring is arranged in annular air-pocket, and the internal ring wall of annular air-pocket is identical with the external annulus of metal oil ring, and the internal ring wall of metal oil ring has the B oil outlet connected with A fuel feed hole and the B fuel feed hole connected with A oil outlet；
Sidewall at the B oil outlet of metal oil ring is provided with the oil inlet pipe connected with hydraulic pump outlet, sidewall at the B fuel feed hole of metal oil ring is provided with and the flowline of hydraulic pump inlet communication, it is provided with dividing plate between described oil inlet pipe and B fuel feed hole, between flowline and B oil outlet, is provided with dividing plate.
In technique scheme, by annular air-pocket, sealing lip offer is supported pressure, make good contact between sealing lip and power transmission shaft, and the compensation sealing lip permanent time run after outside contraction, making to seal and continue reliably, air bag is relatively reliable compared to traditional contraction spring, and avoids being corroded, it is more lasting to elastically keep, and is a kind of novel reliable elastic offer device；It is cavity structure in metal oil ring, it is connected with flow media in metal oil ring, the internal ring wall of annular air-pocket is identical with the external annulus of metal oil ring, so that the heat that air compression produces is taken away by the flow media in metal oil ring, and flow media enters into the annular chamber between sealing lip, thus takes away the heat that sealing lip produces with transmission shaft friction；Carry out fuel feeding with the oil pipe of hydraulic pump import, outlet, it is not necessary to extra equipment, decrease the demand of equipment, and the sustainability of sealing can be greatly improved.
The invention has the beneficial effects as follows:
1, the electrohydraulic steering pump of this structure does not has the drive end bearing bracket of motor, the end face of the pump housing directly coordinates installation with motor casing, thus eliminate motor front end cover, and motor and hydraulic pump share same power transmission shaft, reduce amount of parts, significantly reduce the overall weight of single shaft electrohydraulic steering pump, make transmission efficiency higher, reduce production cost, reduce noise, more compact structure；Motor and hydraulic pump share same power transmission shaft it can be avoided that alignment error problem between power transmission shaft, it is to avoid the problem that two axle axialities are inconsistent；The volume of electrohydraulic steering pump assembly reduces by more than 20%, and weight can alleviate more than 30%.
2, by end cap being located at the end face of the motor side of wheel cavity, and it is integral type structure so that the parts of the pump housing are less, and the bulge loop being provided with bottom bearing bore can carry out axial equipotential to the bearing of bearing intracavity；The noise reduction layer being provided with can be substantially reduced motor and bearing rotates the noise sent.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the single shaft electrohydraulic steering pump of the present invention；
Fig. 2 is the structural representation of the oil sealing of the present invention；
Fig. 3 is the oil sealing cooling structure schematic diagram of the present invention.
Labelling in figure: 1 is hydraulic pump, 2 is motor, 3 is power transmission shaft, 4 is the pump housing, 4.1 is wheel cavity, 4.2 is end cap, 5 is motor casing, 6 is bearing bore, 7 is bulge loop, 8 is bearing, 9 is spring, 10 is oil sealing, 11 is oil sealing ectosome, 12 is body in oil sealing, 13 is sealing lip, 14 is dust excluder lips, 15 is U-shaped additional, 16 is left side ring, 17 is right side ring, 18 is urceolus, 19 is noise reduction layer, 20 is air bag, 21 is metal oil ring, 22 is A fuel feed hole, 23 is A oil outlet, 24 is B fuel feed hole, 25 is B oil outlet, 26 is dividing plate, 27 is oil inlet pipe, 28 is flowline.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings.
Such as Fig. 1, single shaft electrohydraulic steering pump shown in Fig. 2 and Fig. 3, including hydraulic pump 1, motor 2, power transmission shaft 3, the pump housing 4, wheel cavity 4.1, end cap 4.2, motor casing 5, bearing bore 6, bulge loop 7, bearing 8, spring 9, oil sealing 10, oil sealing ectosome 11, body 12 in oil sealing, sealing lip 13, dust excluder lips 14, U-shaped additional 15, left side ring 16, right side ring 17, urceolus 18, noise reduction layer 19, air bag 20, metal oil ring 21, A fuel feed hole 22, A oil outlet 23, B fuel feed hole 24, B oil outlet 25, dividing plate 26, oil inlet pipe 27 and flowline 28, the pump housing 4 of hydraulic pump 1 is fixedly mounted on the motor casing 5 of motor 2, the impeller of hydraulic pump 1 is installed on power transmission shaft 3 with the rotor of motor 2.
The described pump housing 4 includes wheel cavity 4.1 and end cap 4.2, end cap 4.2 is located at the end face of motor 2 side of wheel cavity 4.1 and becomes an entirety, the center of end cap 4.2 is provided with bearing bore 6, the bottom of bearing bore 6 is provided with bulge loop 7, end cap is provided with noise reduction layer 19 towards the inwall of motor 2 side, and the material of described noise reduction layer 19 is compound noise-reducing material；The middle part of power transmission shaft 3 coordinates with the bearing bore 6 on the pump housing 4 and is provided with bearing 8；Bearing 8 is for sealing bearing or rolling bearing or sliding bearing, and preferential selection seals bearing, seals bearing and can also play the sealing function to pump side medium；Wavy spring 9 it is provided with between the end face of bulge loop 7 and bearing 8；The center of described end cap 4.2 is provided with groove, groove is located between sealing bearing 8 and the impeller of hydraulic pump 1, is provided with and coordinates the oil sealing 10 installed with power transmission shaft 3 in groove, and the outer face of oil sealing 10 is provided with elastic spacing back-up ring, oil sealing is played axial limiting effect, prevents vibration.
Described oil sealing 10 includes body 12 in oil sealing ectosome 11 and oil sealing, in oil sealing, body 12 is located at oil sealing ectosome 11；
nullThe cross section of oil sealing ectosome 11 is rectangle，The bottom of oil sealing ectosome 11 is provided with 4 layers of sealing lip 13，The air side of oil sealing ectosome 11 is provided with dust excluder lips 14，The outside of oil sealing ectosome 11 is provided with U-shaped skeleton 15，U-shaped skeleton 15 includes left side ring 16、Right side ring 17 and urceolus 18，The oily side of urceolus 18 and air side are separately installed with left side ring 16 and right side ring 17，Left side ring 16 and right side ring 17 embed in oil sealing rubber，U-shaped skeleton 15 is stainless steel，Left side ring 16、Right side ring 17 can be fixedly mounted on urceolus 18 by Screw，Demountable structure，The medium position of urceolus 18 outer wall is provided with oil sealing rubber，The inwall of oil sealing ectosome 11 is provided with A fuel feed hole 22 and the A oil outlet 23 at 180 ° of interval，A fuel feed hole 22 and A oil outlet 23 is located between the gap of sealing lip 13，A fuel feed hole 22 is with the quantity of A oil outlet 23 fewer than the number of plies of sealing lip 13 one，A fuel feed hole 22 is respectively 3 with the quantity of A oil outlet 23.
In described oil sealing, body 12 includes annular air-pocket 20 and metal oil ring 21, metal oil ring 21 cooperation is arranged in annular air-pocket 20, the internal ring wall of annular air-pocket 20 is identical with the external annulus of metal oil ring 21, and the internal ring wall of metal oil ring 21 has the B oil outlet 25 connected with A fuel feed hole 22 and the B fuel feed hole 24 connected with A oil outlet 23；
Sidewall at the B oil outlet 25 of metal oil ring 21 is provided with the oil inlet pipe 27 connected with hydraulic pump outlet, sidewall at the B fuel feed hole 24 of metal oil ring 21 is provided with the flowline 28 with hydraulic pump inlet communication, it is provided with dividing plate 26 between described oil inlet pipe 27 and B fuel feed hole 24, between flowline 28 and B oil outlet 25, is provided with dividing plate 26.Oil inlet pipe 27 and flowline 28 are all tiny oil pipe, and oil inlet pipe 27 further respectively has control valve and flow-monitoring device, convenient monitoring ruuning situation on flowline 28.
Motor casing 5 refers to the cylinder blanket of motor, rather than electric motor end cap, the electrohydraulic steering pump of this structure does not has the drive end bearing bracket of motor, and the end face of the pump housing 4 directly coordinates installation with motor casing 5, thus eliminate motor front end cover, and motor 2 and hydraulic pump share same power transmission shaft 3, reduce amount of parts, significantly reduce the overall weight of single shaft electrohydraulic steering pump, make transmission efficiency higher, reduce production cost, reduce noise, more compact structure；Motor 2 and hydraulic pump 1 share same power transmission shaft 3 it can be avoided that alignment error problem between power transmission shaft, it is to avoid the problem that two axle axialities are inconsistent；The volume of electrohydraulic steering pump assembly reduces by more than 20%, and weight can alleviate more than 30%.End cap 4.25 is provided with noise reduction layer towards the inwall of motor side, the material of described noise reduction layer is compound noise-reducing material, the noise reduction layer being provided with can be substantially reduced motor and bearing rotates the noise sent, by being provided with wavy spring between bulge loop 7 and the end face of bearing, bearing can be provided and axially support by wavy spring, thus preventing bearing axial motion so that the installation to bearing is relatively reliable, improves bearing and the reliability of pump assembly.The flow orifice being provided with by the metal oil ring 21 being provided with and cooperation, it is possible to solve lubrication and the cooling problem of sealing lip 13, it is provided that a kind of cooling system, and the seal pressure that the oil sealing of this structure bears is bigger, is greatly improved sealing effectiveness and reliability.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (8)
1. a single shaft electrohydraulic steering pump, it is characterized in that, including: hydraulic pump (1) and motor (2), the pump housing (4) of hydraulic pump (1) is fixedly mounted on the motor casing (5) of motor (2), and the impeller of hydraulic pump (1) is installed on power transmission shaft (3) with the rotor of motor (2).
Single shaft electrohydraulic steering pump the most according to claim 1, it is characterized in that, the described pump housing (4) includes wheel cavity (4.1) and end cap (4.2), end cap (4.2) is located at the end face of motor (2) side of wheel cavity (4.1), the center of end cap (4.2) is provided with bearing bore (6), and the bottom of bearing bore (6) is provided with bulge loop (7)；End cap (4.2) is provided with noise reduction layer (19) towards the inwall of motor side, and the material of described noise reduction layer (19) is compound noise-reducing material.
Single shaft electrohydraulic steering pump the most according to claim 1, it is characterised in that the middle part of described power transmission shaft (3) coordinates with the bearing bore (6) on the pump housing (4) and is provided with bearing (8).
Single shaft electrohydraulic steering pump the most according to claim 1, it is characterised in that described bearing (8) is for sealing bearing or rolling bearing or sliding bearing.
Single shaft electrohydraulic steering pump the most according to claim 2, it is characterised in that be provided with wavy spring (9) between the end face of described bulge loop (7) and bearing (8).
Single shaft electrohydraulic steering pump the most according to claim 2, it is characterized in that, the center of described end cap (4.2) is provided with groove, and groove is located between sealing bearing (8) and the impeller of hydraulic pump (1), is provided with and coordinates the oil sealing (10) installed with power transmission shaft (3) in groove.
Single shaft electrohydraulic steering pump the most according to claim 6, it is characterised in that described oil sealing (10) includes body (12) in oil sealing ectosome (11) and oil sealing, in oil sealing, body (12) is located at oil sealing ectosome (11)；
nullThe cross section of oil sealing ectosome (11) is rectangle，The bottom of oil sealing ectosome (11) is provided with 2～6 layers of sealing lip (13)，The air side of oil sealing ectosome (11) is provided with dust excluder lips (14)，The outside of oil sealing ectosome (11) is provided with U-shaped skeleton (15)，U-shaped skeleton (15) includes left side ring (16)、Right side ring (17) and urceolus (18)，The oily side of urceolus (18) and air side are separately installed with left side ring (16) and right side ring (17)，Left side ring (16) and right side ring (17) embed in oil sealing rubber，The medium position of urceolus (18) outer wall is provided with oil sealing rubber，The inwall of oil sealing ectosome (11) is provided with A fuel feed hole (22) and the A oil outlet (23) at 180 ° of interval，A fuel feed hole (22) and A oil outlet (23) are located between the gap of sealing lip (13).
Single shaft electrohydraulic steering pump the most according to claim 7, it is characterized in that, in described oil sealing, body (12) includes annular air-pocket (20) and metal oil ring (21), metal oil ring (21) cooperation is arranged in annular air-pocket (20), the internal ring wall of annular air-pocket (20) is identical with the external annulus of metal oil ring (21), and the internal ring wall of metal oil ring (21) has the B oil outlet (25) connected with A fuel feed hole (22) and the B fuel feed hole (24) connected with A oil outlet (23)；
The sidewall at B oil outlet (25) place of metal oil ring (21) is provided with the oil inlet pipe (27) connected with hydraulic pump outlet, the sidewall at B fuel feed hole (24) place of metal oil ring (21) is provided with the flowline (28) with hydraulic pump inlet communication, it is provided with dividing plate (26) between described oil inlet pipe (27) and B fuel feed hole (24), between flowline (28) and B oil outlet (25), is provided with dividing plate (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513184.0A CN106015023A (en) | 2016-07-04 | 2016-07-04 | Single-shaft electro-hydraulic steering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513184.0A CN106015023A (en) | 2016-07-04 | 2016-07-04 | Single-shaft electro-hydraulic steering pump |
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| Publication Number | Publication Date |
|---|---|
| CN106015023A true CN106015023A (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610513184.0A Pending CN106015023A (en) | 2016-07-04 | 2016-07-04 | Single-shaft electro-hydraulic steering pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108216359A (en) * | 2016-12-22 | 2018-06-29 | 天津市松正电动汽车技术股份有限公司 | A kind of electric hydraulic power-assisted steering structure |
| CN109667785A (en) * | 2018-12-17 | 2019-04-23 | 江苏国泉泵业制造有限公司 | A kind of sealing structure of automatic coupling device |
| CN111750070A (en) * | 2020-07-30 | 2020-10-09 | 广西科技大学鹿山学院 | High gas tightness transmission shaft |
| CN111911420A (en) * | 2020-08-07 | 2020-11-10 | 善若泵业科技有限公司 | Compound water pump |
| CN117072450A (en) * | 2023-10-17 | 2023-11-17 | 江苏翰纳泵业有限公司 | High-performance centrifugal pump |
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| CN206035839U (en) * | 2016-07-04 | 2017-03-22 | 玉林市璟晗新能源汽车有限责任公司 | Electronic hydraulic steering pump of unipolar |
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| JP2001141073A (en) * | 1999-11-17 | 2001-05-25 | Mitsubishi Heavy Ind Ltd | Sealing structure of rotary body |
| CN102412651A (en) * | 2011-08-13 | 2012-04-11 | 无锡杰尔压缩机有限公司 | Oil seal structure used in high speed motor |
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|---|---|---|---|---|
| CN108216359A (en) * | 2016-12-22 | 2018-06-29 | 天津市松正电动汽车技术股份有限公司 | A kind of electric hydraulic power-assisted steering structure |
| CN109667785A (en) * | 2018-12-17 | 2019-04-23 | 江苏国泉泵业制造有限公司 | A kind of sealing structure of automatic coupling device |
| CN109667785B (en) * | 2018-12-17 | 2020-05-12 | 江苏国泉泵业制造有限公司 | Sealing structure of automatic coupling device |
| CN111750070A (en) * | 2020-07-30 | 2020-10-09 | 广西科技大学鹿山学院 | High gas tightness transmission shaft |
| CN111911420A (en) * | 2020-08-07 | 2020-11-10 | 善若泵业科技有限公司 | Compound water pump |
| CN117072450A (en) * | 2023-10-17 | 2023-11-17 | 江苏翰纳泵业有限公司 | High-performance centrifugal pump |
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Application publication date: 20161012 |