CN202641831U - Combined valve type cycloid hydraulic steering gear - Google Patents
Combined valve type cycloid hydraulic steering gear Download PDFInfo
- Publication number
- CN202641831U CN202641831U CN 201220235761 CN201220235761U CN202641831U CN 202641831 U CN202641831 U CN 202641831U CN 201220235761 CN201220235761 CN 201220235761 CN 201220235761 U CN201220235761 U CN 201220235761U CN 202641831 U CN202641831 U CN 202641831U
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- China
- Prior art keywords
- valve
- valve body
- hydraulic steering
- check valve
- cycloid
- Prior art date
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- Expired - Fee Related
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- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model relates to a combined valve type cycloid hydraulic steering gear which is composed of a control rotation valve, a cycloid metering device and a combined valve block. A one-way valve and a flow adjusting plug screw are arranged in an oil channel integrally connected by oil inlets of the combined valve block and a valve body from outside to inside. The one-way valve is composed of a top cover, a one-way valve spring, a one-way valve body and a one-way valve core, wherein the one-way valve body, the one-way valve spring and the top cover are sequentially sleeved on the one-way valve core, a thrust bearing is installed at the end of the valve core, a front cover is combined with the valve core in a double-sealing mode, plastic pads are added between two ends of a shifting pin and the valve body, and axial bearing force is improved due to the fact that the double-sealing mode can bear large backpressure. High pressure oil is prevented from flowing back, overflowing area of oil inlets is changed, cavitation is avoided being formed in oil feed, noise is reduced, and larger backpressure and severe environments can be borne. The combine valve type cycloid hydraulic steering gear is high in abrasion resistance, small in friction resistance, long in service life, small in internal leakage, high in volume efficiency, simple in structure, easy to produce and manufacture and low in cost.
Description
Technical field
The utility model belongs to the off-the-road vehicle hydraguide, particularly a kind of off-the-road vehicle combination valve type cycloid all hydraulic steering.
Background technology
Existing cycloid all hydraulic steering is comprised of valve body, 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 in emergent manual steering steering cylinder attonity or not obvious phenomenon occuring during particularly at bringing onto load; When 2, turning to terminal point, chaufeur is without obviously terminal point sense; 3, rotor tip affects the Volumetric efficiency of deflector without seal approach; 4, the steering hydraulic noise is high; 5, the fluid temperature rise of steering swivel system control is bad, produces easily energy dissipation; 6, deflector does not have damping function, turn to beginning, stop and steering direction when switching turning velocity cause greatly and turn to impact shock and produce the vehicle shaking phenomenon.
The utility model content
The purpose of this utility model is to overcome the deficiency that above prior art exists, and provides a kind of high pressure oil refluence, air pocket avoided to form, reduce noise, the little combination valve type cycloid all hydraulic steering of internal leakage.
The purpose of this utility model can be achieved by the following measures:
This deflector is comprised of control rotary valve, cycloid gauging device, combination valve block.The control rotary valve comprises valve body, valve pocket, spool, universal driving shaft, spring leaf, patch, finger, the cycloid gauging device comprises every dish, rotor, stator, bonnet, the oil inlet of combination valve block and the oil inlet on the valve body are integrally connected in the oil duct of formation from outward to interior check valve and the flow regulating plug screw of being provided with successively, described check valve is by top cover, check valve spring, the check valve valve body, inner elements of check valve forms, the check valve valve body, check valve spring, top cover is sleeved on the inner elements of check valve successively, one-way valve opens when the deflector oil-feed, if high pressure oil flows backwards, the check valve cut-off, prevent from when normal direction of rotation, causing high pressure oil to flow backwards owing to be subject to external impact, be provided with the adjusting plug screw in the oil inlet on the valve body, be used for changing the open area of oil inlet, form air pocket when avoiding fuel feeding, reduce noise; Can be provided with between the finger two ends that the drive coupler rotates and the valve body inner bore and mould pad; The end of spool is equipped with thrust baring, and this thrust baring can reduce mechanical resistance, bears larger axial force; The junction of protecgulum and spool is provided with X-shaped seal ring and O shape circle; The end of rotor is provided with the rectangular seal of O shape circle and high-wearing feature, and the employing double seal guarantees that deflector can bear larger back pressure and rugged environment at work.
Combination valve type cycloid all hydraulic steering of the present utility model, in the oil duct that oil inlet and the oil inlet on the valve body of combination valve block is integrally connected Zi outside be provided with check valve and flow regulating plug screw to interior precedence, be provided with check valve in the oil inlet of combination valve block, one-way valve opens during the deflector oil-feed, if high pressure oil flows backwards, the check valve cut-off prevents from causing high pressure oil to flow backwards owing to be subject to external impact when normal direction of rotation.Cooperate the flow regulating plug screw to change the open area of oil inlet, form air pocket when avoiding fuel feeding, reduce noise.The end of spool is equipped with thrust baring, reduces mechanical resistance, has improved axial holding capacity.The junction of protecgulum and spool is provided with X-shaped seal ring and O shape circle, adopts double seal to guarantee that deflector can bear larger back pressure and rugged environment at work.Add between finger two ends and valve body inner bore and mould pad, high abrasion, friction drag is little, avoids the finger play to scratch valve body inner bore, has improved service life.Adopt double seal can bear larger back pressure, reduced the deflector internal leakage, thereby improved the Volumetric efficiency of deflector, avoided energy dissipation, strengthened terminal point moment.And simple in structure, to manufacture easily, cost is low.
Description of drawings
Fig. 1 is the front view of the utility model combination valve type cycloid all hydraulic steering
Fig. 2 is the combination valve block birds-eye view of the utility model combination valve type cycloid all hydraulic steering
Fig. 3 is the utility model combination valve type cycloid all hydraulic steering fuel feed hole internal check valve front view
Fig. 4 is the utility model combination valve type cycloid all hydraulic steering fuel feed hole internal check valve birds-eye view
Fig. 5 is the flow regulating plug screw front view of the utility model combination valve type cycloid all hydraulic steering
Fig. 6 is the flow regulating plug screw birds-eye view of the utility model combination valve type cycloid all hydraulic steering.
The specific embodiment
Below in conjunction with above-mentioned accompanying drawing the utility model is elaborated.
Shown in Fig. 1～5, the combination valve type cycloid all hydraulic steering is a kind of hydraulic steering gear of using for off-the-road vehicle, and it comprises by control rotary valve, cycloid gauging device, combination valve block and forming.The control rotary valve comprises valve body 28, valve pocket 7, spool 8, universal driving shaft 9, spring leaf 16, patch 17, finger 18 etc.; The cycloid gauging device comprises every dish 22, rotor 23, stator 12, bonnet 27 etc.; Bearing circle is connected with spool 8, spool 8 drives valve pocket 7 and relatively rotates by spring leaf 16, patch 17, valve pocket 7 is connected with universal driving shaft by finger 18 and is connected with the rotor 23 of cycloid gauging device, the stator 12 of cycloid gauging device, be connected and fixed by hex bolt 24 and valve body 28 every dish 22, bonnet 27, be equipped with O-ring seals on each faying face.Needs according to expanded function are connected and fixed 42 combination valve blocks by bolt and valve body 28, to realize the combination functions such as pressure limiting, bidirectional buffering, two-way oil compensation.
Four hydraulic fluid ports are arranged on the combination valve block 42, and corresponding one by one with oil inlet P, oil return inlet T, hydraulic fluid port A, hydraulic fluid port B on the valve body 28, two oil pipes of steering cylinder are connected with hydraulic fluid port A, hydraulic fluid port B respectively.Have four road circular troughs on the valve body 28, be communicated with four hydraulic fluid ports on the valve body 28 respectively by inclined hole.Grouping oilhole on the valve pocket 7 is corresponding with the oil groove difference on the spool 8, when left or the moving bearing circle of right-hand rotation, by the distribution oil piping system of control rotary valve, offer the high pressure that hydraulic fluid port A or hydraulic fluid port B need, promote steering cylinder and carry out corresponding action, thereby realize the left or right turning function of vehicle.
The check valve that valve body 28 in-built flexible straight pins 21 and steel ball 20 form, the left side of steel ball 20 communicates with oil return inlet T, the right of steel ball 20 communicates with oil inlet P, when power is the steering oil air pump inoperative outside the suddenly forfeiture of oil inlet, emergent manpower steering wheel rotation, band movable valve plug 8, make oil pocket produce certain vacuum, realization is amplified the moment of manual input from the oil return inlet T repairing by the cycloid gauging device, thereby realizes the emergent function that turns to.
The end of spool 8 is equipped with the thrust baring that bearing gasket 4, thrust needle roller 5 retainers and bearing distance piece 6 form, and this thrust baring can reduce mechanical resistance, bears larger axial force.Protecgulum 1 is provided with X-shaped seal ring 13 and O shape circle 14 with the junction of spool 8, adopts double seal to guarantee that deflector can bear larger back pressure and rugged environment at work.
Be provided with between the two ends of finger 18 and valve body 28 endoporus and mould pad 19, mould pad 19 and adopt polytetrafluoroethylmaterial material, it has high abrasion, the characteristics that friction drag is little, avoid deflector in when work, because the play of finger scratches valve body 28 endoporus, improve service life and reduce friction drag.
Be provided with in the oil inlet P on the valve body 28 and regulate plug screw 29, be used for changing the open area of oil inlet, form air pocket when avoiding fuel feeding, reduce noise.
Be provided with check valve 44 in the oil inlet of combination valve block 42, check valve 44 is comprised of top cover 44a, check valve spring 44b, check valve valve body 44c, inner elements of check valve 44d, check valve 44 is opened during the deflector oil-feed, if high pressure oil flows backwards, check valve 44 cut-offs prevent from causing high pressure oil to flow backwards owing to be subject to external impact when normal direction of rotation.
The end of spool 8 is equipped with thrust baring, protecgulum 1 comprises valve body 28, valve pocket 7, spool 8, universal driving shaft 9, spring leaf 16, patch 17, finger 18 etc. with the control rotary valve of spool 8 these deflectors, have four road circular troughs on the valve body 28, be communicated with four hydraulic fluid ports on the valve body 28 respectively by inclined hole.Grouping oilhole on the valve pocket 7 is corresponding with the oil groove difference on the spool 8, when left or the moving bearing circle of right-hand rotation, by the distribution oil piping system of control rotary valve, offer the high pressure that hydraulic fluid port A or hydraulic fluid port B need, promote steering cylinder and carry out corresponding action, thereby realize the left or right turning function of vehicle.
The end of spool 8 is equipped with thrust baring, and this thrust baring can reduce mechanical resistance, bears larger axial force.Protecgulum 1 is provided with X-shaped seal ring and O shape circle with the junction of spool 8, adopts double seal to guarantee that deflector can bear larger back pressure and rugged environment at work.
Be provided with between finger 18 two ends that the drive coupler rotates and valve body 28 endoporus and mould pad 19, mould pad 19 and adopt polytetrafluoroethylmaterial material, it has high abrasion, the characteristics that friction drag is little, avoid deflector when work, because the play of finger 18 scratches valve body 28 endoporus, improve service life and reduce friction drag.
Claims (2)
1. combination valve type cycloid all hydraulic steering, by the control rotary valve, combination valve block, the cycloid gauging device consists of, the control rotary valve comprises valve body, valve pocket, spool, universal driving shaft, spring leaf, patch, finger, the cycloid gauging device comprises every dish, rotor, stator, bonnet, it is characterized in that: the oil inlet of combination valve block and the oil inlet on the valve body are integrally connected in the oil duct of formation from outward to interior check valve and the flow regulating plug screw of being provided with successively, described check valve is by top cover, check valve spring, the check valve valve body, inner elements of check valve forms, the check valve valve body, check valve spring, top cover is sleeved on the inner elements of check valve successively.
2. described combination valve type cycloid all hydraulic steering according to claim 1 is characterized in that: drive to be provided with between finger two ends that coupler rotates and the valve body inner bore and mould pad.
3, described combination valve type cycloid all hydraulic steering according to claim 1 and 2, it is characterized in that: the end of spool is equipped with thrust baring.
4, described combination valve type cycloid all hydraulic steering according to claim 3 is characterized in that: the junction of protecgulum and spool is provided with X-shaped seal ring and O shape circle.
5, described combination valve type cycloid all hydraulic steering according to claim 4 is characterized in that: the end of rotor is provided with the rectangular seal of O shape circle and high-wearing feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235761 CN202641831U (en) | 2012-05-22 | 2012-05-22 | Combined valve type cycloid hydraulic steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235761 CN202641831U (en) | 2012-05-22 | 2012-05-22 | Combined valve type cycloid hydraulic steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202641831U true CN202641831U (en) | 2013-01-02 |
Family
ID=47410979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220235761 Expired - Fee Related CN202641831U (en) | 2012-05-22 | 2012-05-22 | Combined valve type cycloid hydraulic steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202641831U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105564500A (en) * | 2014-10-30 | 2016-05-11 | 操纵技术Ip控股公司 | Pressure sensor autotrim algorithm |
| CN108199203A (en) * | 2018-03-23 | 2018-06-22 | 深圳市光辉电器实业有限公司 | A kind of cable connector connector for being used for wind-powered electricity generation or photovoltaic apparatus |
| CN109109971A (en) * | 2018-09-05 | 2019-01-01 | 芜湖中意液压科技股份有限责任公司 | A kind of all-hydraulic steering gear |
| CN111946683A (en) * | 2020-07-16 | 2020-11-17 | 芜湖中意液压科技股份有限责任公司 | High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure |
-
2012
- 2012-05-22 CN CN 201220235761 patent/CN202641831U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105564500A (en) * | 2014-10-30 | 2016-05-11 | 操纵技术Ip控股公司 | Pressure sensor autotrim algorithm |
| CN108199203A (en) * | 2018-03-23 | 2018-06-22 | 深圳市光辉电器实业有限公司 | A kind of cable connector connector for being used for wind-powered electricity generation or photovoltaic apparatus |
| CN109109971A (en) * | 2018-09-05 | 2019-01-01 | 芜湖中意液压科技股份有限责任公司 | A kind of all-hydraulic steering gear |
| CN109109971B (en) * | 2018-09-05 | 2021-04-02 | 芜湖中意液压科技股份有限责任公司 | Full hydraulic steering gear |
| CN111946683A (en) * | 2020-07-16 | 2020-11-17 | 芜湖中意液压科技股份有限责任公司 | High back pressure hydraulic steering gear with Y-shaped rotary dynamic sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160720 Address after: 321100 Zhejiang city of Lanxi Province River Street Economic Development Zone, Yan Sha Road No. 6 Patentee after: Zhejiang star Hydraulic Technology Co., Ltd. Address before: 321102 Zhejiang city of Jinhua province Lanxi City Economic Development Zone No. 6 Yan Sha Lu (new company) Patentee before: Zhejiang Xinyue Auto Parts Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20200522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |