CN2913122Y - Combined valve type cycloidal hydraulic steering gear - Google Patents
Combined valve type cycloidal hydraulic steering gear Download PDFInfo
- Publication number
- CN2913122Y CN2913122Y CN 200620103461 CN200620103461U CN2913122Y CN 2913122 Y CN2913122 Y CN 2913122Y CN 200620103461 CN200620103461 CN 200620103461 CN 200620103461 U CN200620103461 U CN 200620103461U CN 2913122 Y CN2913122 Y CN 2913122Y
- Authority
- CN
- China
- Prior art keywords
- oil
- housing
- rotor
- spool
- steering gear
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model relates to a cycloid completely hydraulic redirector in a combination valve type. An oil inlet P, a return oil inlet T, and two oil openings R and L which are used to connect the steering cylinder are positioned on the fully sealed housing. Four ring grooves are communicated with the oil openings correspondingly through the inclined holes. A plurality of oil holes are positioned on the valve bush and valve plug which are connected with each other by a guide pin. A rotor which is engaged with the transmission shaft is positioned in the stator. At the same time, a non-return valve comprising a spring pin and a steel ball is positioned in the housing, A thrust bearing is positioned at the end of the valve plug; a sealing element and a cover plate are positioned at the end of the rotor; a double sealing is provided between the front cover and the valve plug. The utility model has the advantages of small mechanical resistance, large tolerance of axial force, high volumetric efficiency of the redirector and can meet the emergent manual steering demand; further more, the utility model is simple in structure and technology, easy to guarantee the precision and convenient to install and repair.
Description
Technical field
The utility model relates to a kind of hydraulic efficiency gear that is used for vehicle power steering, especially a kind of cycloid all-hydraulic steering gear of combination valve type.
Background technology
Existing cycloid all-hydraulic steering gear is made up of housing, valve pocket, spool and stator, rotor etc., its defective has: 1. because stator and rotor have certain axial fit clearance, high pressure oil can leak into return opening from two transverse planes of rotor, usually causes turning to the oil cylinder attonity or moving not obvious phenomenon during particularly at bringing onto load in emergent manual steering; 2. because existing all-hydraulic steering gear is provided with sliding shoe between spool and protecgulum, owing between spool and the sliding shoe relative motion being arranged, because be the face contact, so when deflector is worked, the mechanical resistance square is big, works long hours easily to make the deflector heating, influences the deflector performance; 3. rotor tip does not have seal approach, influences the Volumetric efficiency of deflector.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective of prior art and provides a kind of and guarantee that under emergent manual steering and rated pressure operating mode vehicle accurately turns to, reduces mechanical resistance and can bear larger axis is first purpose to power, the cycloid all-hydraulic steering gear that improves the deflector Volumetric efficiency; It is second purpose that a kind of cycloid all-hydraulic steering gear that adopts double sealing to make deflector bear bigger back pressure and harsh environment at work is provided simultaneously.
Technical matters of the present utility model and goal of the invention solve by following technical proposal:
A kind of cycloid all-hydraulic steering gear of combination valve type, comprise by attaching parts bonded assembly rear quarter panel, stator, front side plate, housing, protecgulum is formed hermetic shell, the housing of shell is provided with oil inlet P, oil return inlet T, connect the hydraulic fluid port R and the L that turn to oil cylinder, article four, circular groove, communicate with cooresponding hydraulic fluid port by inclined hole, be provided with in the housing by locating dowel pin bonded assembly valve pocket and spool, valve pocket and spool are provided with many group oilholes, be provided with rotor in the stator, transmission shaft engaged transmission in this rotor and the spool is characterized in that being equipped with in the described housing check valve of being made up of spring pin and steel ball; The end of spool is equipped with thrust baring; The cover plate that is tightly connected is installed in the end of rotor.
Be provided with neonychium between the endoporus of described locating dowel pin two ends and housing.
Described spring pin communicates with oil inlet P, and steel ball the right communicates with oil return inlet T.
The junction of described protecgulum and spool is provided with the star seal ring and the dust ring of double sealing.
Be provided with " O " RunddichtringO between described cover plate that is tightly connected and the rotor.
Compared with prior art, the utility model is equipped with the check valve of being made up of spring pin and steel ball in housing, communicates with oil inlet P and oil return inlet T respectively, forms a feed circuit, makes when meeting an urgent need manual steering to realize from the oil return inlet T repairing.The installation of thrust baring can reduce mechanical resistance, bear larger axis to power; Rotor tip is installed the leak free cover plate can improve the deflector Volumetric efficiency, has adopted double sealing to make deflector can bear bigger back pressure and rugged environment at work; Remove this, that the utility model also has is simple in structure, technology is easy and be easy to guarantee precision, be convenient to the characteristics of installing and keeping in repair.
Description of drawings
Fig. 1 is the utility model sectional structure scheme drawing.
Fig. 2 is the birds-eye view of Fig. 1.
The specific embodiment
Below in conjunction with above-mentioned accompanying drawing embodiment the utility model is described in detail again.
Shown in Fig. 1～2, the cycloid all-hydraulic steering gear of combination valve type, it is a kind of hydraulic steering gear that is used for vehicle power steering, it comprises by attaching parts 8,19 bonded assembly rear quarter panels 10, stator 13, front side plate 31, housing 4, protecgulum 1 forms hermetically sealed shell, wherein is equipped with " O " RunddichtringO 3 on the faying face of rear quarter panel and stator, stator and front side plate, front side plate and housing, housing and protecgulum.
Be provided with rotor 9 in the stator 13, this rotor 9 and transmission shaft 14 engaged transmission are equipped with " O " RunddichtringO 11 and cover plate 12 in the end of rotor, to improve Volumetric efficiency.
Be provided with neonychium 16 between locating dowel pin 17 two ends and housing 4 endoporus, strong bump to housing improve service life because of the play of locating dowel pin causes to avoid deflector when work.
The oil channel structures and the flow direction thereof below in conjunction with each part are described further, to reach to further understanding of the present utility model:
When pump fuel feed, when rotational valve core 15 not, oil through oil inlet P by the oilhole on inclined hole 25, circular groove 21 and valve pocket 7, the spool 15 29 to spool 15 inside, again by circular groove 24, inclined hole 28 to the oil return inlet T oil sump tank.When rotational valve core 15, oil passes through inclined hole 25 through oil inlet P, circular groove 21, this moment, valve pocket 7 spools 15 upper oil holes 29 were closed, oil enters into left side distributing groove on the spool 15 from valve pocket 7 upper oil holes 30, advance the part oilhole in housing 4 and the front side plate 31 then, enter in the part annular seal space that constitutes by stator 13 and rotor 9, thereby form three high-low pressure chambeies, because the utility model is equipped with " O " type circle 11 and cover plate 12 in the left side of rotor 9, the oil of high pressure chest is significantly reduced from the oil that rotor 9 end flats leak into oil return inlet T, and low-pressure cavity and the oil that leaks from rotor 9 end flats, from front side plate 31 and the other part oilhole of housing 4 in-to-ins, arrive in the right distributing groove of spool 15, maybe enter circular groove 23 to hydraulic fluid port L if enter circular groove 22 during right-hand rotation spool 15 when the left-hand rotation spool 15 to hydraulic fluid port R, arrive the right or left chamber that turns to oil cylinder on the vehicle, and the oil return in the left side that turns to oil cylinder on the vehicle or right chamber is inner to oil back chamber circular groove 24 to spool 15 through deflector hydraulic fluid port L or R again, the oil return inlet T oil sump tank, thereby it is few to reach loss of pressure, the characteristics that Volumetric efficiency is high.And when oil pump was not worked, rotational valve core 15 made oil pocket produce certain vacuum, and oil promotes steel ball 5 from hydraulic fluid port T through inclined hole 28 and enters valve pocket 7, spool 15, thereby realized the emergent function that turns to of vehicle manpower.
Claims (5)
1, a kind of cycloid all-hydraulic steering gear of combination valve type, comprise by attaching parts bonded assembly rear quarter panel (10), stator (13), front side plate (31), housing (4), protecgulum (1) is formed hermetic shell, the housing of shell is provided with oil inlet P, oil return inlet T, connect the hydraulic fluid port R and the L that turn to oil cylinder, article four, circular groove (21), (22), (23), (24), communicate with cooresponding hydraulic fluid port by inclined hole, be provided with in the housing by locating dowel pin (17) bonded assembly valve pocket (7), spool (15), valve pocket and spool are provided with many group oilholes, be provided with rotor (9) in the stator (13), transmission shaft (14) engaged transmission in this rotor and the spool is characterized in that being equipped with in the described housing (4) check valve of being made up of spring pin (6) and steel ball (5); The end of spool (15) is equipped with thrust baring (20); The cover plate (12) that is tightly connected is installed in the end of rotor (9).
2, the cycloid all-hydraulic steering gear of combination valve type according to claim 1 is characterized in that being provided with neonychium (16) between the endoporus of described locating dowel pin (17) two ends and housing (4).
3, the cycloid all-hydraulic steering gear of combination valve type according to claim 1 is characterized in that described spring pin (6) communicates with oil inlet P, and steel ball (5) the right communicates with oil return inlet T.
4, the cycloid all-hydraulic steering gear of combination valve type according to claim 1 is characterized in that the described protecgulum (1) and the junction of spool (15) are provided with the star seal ring (18) and the dust ring (2) of double sealing.
5,, it is characterized in that being provided with " O " RunddichtringO (11) between described cover plate that is tightly connected (12) and the rotor (9) according to the cycloid all-hydraulic steering gear of each described combination valve type of claim 1～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103461 CN2913122Y (en) | 2006-05-08 | 2006-05-08 | Combined valve type cycloidal hydraulic steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103461 CN2913122Y (en) | 2006-05-08 | 2006-05-08 | Combined valve type cycloidal hydraulic steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2913122Y true CN2913122Y (en) | 2007-06-20 |
Family
ID=38167720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620103461 Expired - Fee Related CN2913122Y (en) | 2006-05-08 | 2006-05-08 | Combined valve type cycloidal hydraulic steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2913122Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693101A (en) * | 2013-12-20 | 2014-04-02 | 华南理工大学 | Vehicle variable-speed hydraulic steering gear |
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
-
2006
- 2006-05-08 CN CN 200620103461 patent/CN2913122Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693101A (en) * | 2013-12-20 | 2014-04-02 | 华南理工大学 | Vehicle variable-speed hydraulic steering gear |
| CN103693101B (en) * | 2013-12-20 | 2016-04-13 | 华南理工大学 | A kind of vehicle speed variation hydraulic steering gear |
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101566149A (en) | Master-auxiliary vane pump and stator decompression method | |
| CN111173658B (en) | Low-inlet-pressure high-supercharging-capacity combined electric pump | |
| CN2913122Y (en) | Combined valve type cycloidal hydraulic steering gear | |
| CN202937402U (en) | Radial support shaft valve wagon-flow allocation cycloid hydraulic motor | |
| CN101171426A (en) | Internal gear fuel pump | |
| CN103696907B (en) | Brevicone axon is to compact high-speed distributing cycloid hydraulic motor | |
| CN203532246U (en) | High-low pressure duplicate gear pump | |
| CN102828895B (en) | Radial support axle valve flow distribution cycloid hydraulic motor | |
| CN2545386Y (en) | Axial oil distribution cycloidal hydraulic motor | |
| CN200985898Y (en) | Mechanical sealing device capable of freely scattering in axial direction used for multi-stage pump | |
| CN214660668U (en) | Large-traffic compact electricity liquid all-in-one | |
| CN104728416A (en) | Dual clutch transmission with improved oil pump arrangement structure | |
| CN102691655B (en) | Shaft rotation double-stator cam rotor multi-output pump | |
| CN201582111U (en) | Triple low-pressure gear pump | |
| CN201484482U (en) | Fully hydraulic double-rotor-stator steering gear | |
| CN219865323U (en) | Cycloid hydraulic motor | |
| CN113550897A (en) | Double-power drive pump of gearbox and operation method thereof | |
| CN201953652U (en) | High pressure hydraulic vane pump | |
| CN201677920U (en) | Combined large-displacement full hydraulic steering gear | |
| CN111197552A (en) | Plane flow distribution cycloid hydraulic motor | |
| CN216842029U (en) | Shell rotation type double-speed cycloid hydraulic motor | |
| CN113719402B (en) | Electro-hydraulic dual-drive motor | |
| CN216975722U (en) | Novel hydraulic system lubricating structure | |
| CN212202898U (en) | Clutch with gearbox output function, gearbox and engineering vehicle | |
| CN212803799U (en) | High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20140508 |