CN108639147A - A kind of double loop power steering stgear and its working method - Google Patents
A kind of double loop power steering stgear and its working method Download PDFInfo
- Publication number
- CN108639147A CN108639147A CN201810637803.6A CN201810637803A CN108639147A CN 108639147 A CN108639147 A CN 108639147A CN 201810637803 A CN201810637803 A CN 201810637803A CN 108639147 A CN108639147 A CN 108639147A
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- Prior art keywords
- shell
- oil
- servo
- control valve
- hand end
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Classifications
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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
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention discloses a kind of double loop power steering stgears,Including shell,Bottom cover,Rack piston,Rocking arm axle assembly,Upper cover and plane bearing,Bottom cover is fixed on the left-hand end of shell,Rocker arm shaft is arranged with side cover assembly in shell,And it is connect with the intermeshing of rack piston,Upper cover is fixed on the right-hand end of shell,It is connected with course changing control valve assembly on the inside of rack piston,Course changing control valve assembly right-hand end is rotatablely connected with plane bearing,Case inside,And shell cavity of resorption is equipped between rack piston and bottom cover,At shell inner left wall,And it is equipped with shell epicoele positioned at rack piston right-hand end,Shell right-hand end is equipped with the first circuit oil inlet and the first circuit oil return opening,Second servo loop oil inlet,Second servo loop oil return opening,Second servo loop connects servo-cylinder hydraulic fluid port,Second servo loop connects servo-cylinder oil,The present invention solves the problems, such as easily unstable when vehicle forfeiture steering hydraulic power-assisted rear steering difficulty and the manufacture of in stays and big flow oil pump are not easy big with steering gear working flow.
Description
Technical field
The present invention relates to vehicle steering device fields, and in particular to a kind of double loop power steering stgear and its working method.
Background technology
Power steering stgear is generally equipped in commercial vehicle steering, and on heavy vehicles, it is big due to turning to load per axle,
Therefore steering drag is very big, generally uses hydraulic power-assist steering system.But either external or domestic standard, loses for turning to
The power-assisted steering device of effect all defines its steering capability, and this is to say when power steering fails, steering gear also requires to utilize
Its mechanical function works on, and is repaired with ensuring that vehicle can continue to travel to neighbouring maintenance factory, this will not only meet method
Rule require, and even more need to make vehicle safe driving.But it is more than the heavy-duty car of 5500kg for preceding thrust load, it is dynamic turning to
In the case that Force system fails, it is difficult with the driving of its mechanical steering ability, therefore developing double loop power steering stgear seems
It is particularly necessary, it can solve the problems, such as in stays after vehicle loses steering hydraulic power-assisted.
Invention content
The technical problem to be solved in the present invention is to provide a kind of double loop power steering stgears, and which solve vehicles to lose steering
Hydraulic booster rear steering difficulty and problem in stays, and solve the manufacture of big flow oil pump and be not easy and steering gear workflow
Easily unstable problem when measuring big.
To solve the above problems, the present invention adopts the following technical scheme that：
A kind of double loop power steering stgear, including shell, bottom cover, rack piston, rocking arm axle assembly, upper cover and plane axis
It holds, the bottom cover is fixed on the left-hand end of shell, and the rocker arm shaft is arranged with side cover assembly in case inside and and rack piston
Side intermeshing connection, the upper cover is fixed on the right-hand end of shell, and steering control is connected on the inside of the rack piston
Valve assembly processed, the course changing control valve assembly right-hand end are rotatably connected with plane bearing, the case inside and be located at tooth
It is equipped with shell cavity of resorption between piston and bottom cover, shell is equipped at the shell inner left wall and positioned at rack piston right-hand end
Epicoele, the shell right-hand end are equipped with the first circuit oil inlet and the first circuit oil return opening, and the shell right-hand end is additionally provided with the
Secondary circuit oil inlet, second servo loop oil return opening, second servo loop connect servo-cylinder hydraulic fluid port, second servo loop connects servo-cylinder oil.
Further, the course changing control valve assembly is mounted on by steel ball, steel ball conduit, vessel clamp on rack piston,
The steering control valve forms the screw pair that can be moved to axial with rack piston.
Further, first circuit oil inlet and the first circuit oil return opening, second servo loop oil inlet, second servo loop return
Hydraulic fluid port, second servo loop connect servo-cylinder hydraulic fluid port, second servo loop connects servo-cylinder oil and is connected at shell right-hand end inner wall.
Further, the plane bearing is embedded on the inside of upper cover, and is sleeved on the outer circle of course changing control valve assembly right-hand end
Place.
Further, a piece of flat pad is additionally provided between the course changing control valve assembly right-hand end and shell, it is described flat
Face gasket is sleeved at the outer circle of course changing control valve assembly right-hand end.
Further, the outside of the bottom cover is equipped with flange face bolt, and the flange face bolt runs through or be threadedly coupled bottom
It is threadedly coupled with shell left-hand end after lid.
The invention also discloses a kind of working methods of double loop power steering stgear, include the following steps：
1), rack piston connects by steel ball conduit, vessel clamp, steel ball and course changing control valve assembly and to form screw
It is secondary；
2), rack piston forms a pair of of rack and pinion engagement kinematic pair with rocking arm axle assembly again；
3), when rotating course changing control valve assembly, shell epicoele of the rack piston in shell and intracavitary under shell are driven
It axially moves, to drive rocking arm axle assembly with axis oscillating；
4) all pipelines, are being connected, after the oil pump for starting two sets of circuits, are rotating rocking arm axle assembly, at this time steering control valve
Assembly can establish oil according to the flow direction of rotation input shaft distribution hydraulic oil clockwise or counterclockwise, and according to loading condition
Pressure；
5), when the first circuit oil inlet injects high pressure oil, under the distribution of course changing control valve assembly, high pressure oil enters shell
Body cavity of resorption or shell epicoele push rack piston to drive rocker arm shaft along axis oscillating, low to drive vehicle to carry out steering running
Pressure oil then flows back to oil tank by oil return opening；
6), when second servo loop oil inlet injects high pressure oil, under the distribution of course changing control valve assembly, high-pressure oil flow is to the
Secondary circuit connects servo-cylinder hydraulic fluid port or second servo loop servo-cylinder hydraulic fluid port, and second servo loop connects servo-cylinder hydraulic fluid port or second servo loop servo-cylinder oil
Mouth can connect vehicle the second steeraxle power-assisted oil cylinder or be distributed in the unidirectional power-assisted oil cylinder of the first steeraxle both sides, to drive vehicle to carry out
Running is turned to, low pressure oil then flows back to oil tank by second servo loop oil inlet, second servo loop oil return opening.
The beneficial effects of the invention are as follows：A kind of double loop power steering stgear of the present invention can match two independent oil pumps and constitute two
Performance loop is covered, is had when certain primary Ioops occurs abnormal, another circuit is unaffected, and continuation can be provided to steering and be helped
Power solves the problems, such as that vehicle loses steering hydraulic power-assisted rear steering difficulty and in stays.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of double loop power steering stgear of the present invention；
Fig. 2 is the sectional view in the directions A-A at Fig. 1 of the present invention.
In Fig. 1-2：1, flange face bolt；2, bottom cover；3, shell；4, steel ball；5, steel ball conduit；6, vessel clamp；7, rack
Piston；8, course changing control valve assembly；9, flat pad；10, plane bearing；11, upper cover；12, rocking arm axle assembly；13, first time
Road oil inlet；14, the first circuit oil return opening；15, shell cavity of resorption；16, shell epicoele；17, second servo loop oil inlet；18, second
Circuit oil return opening；19, second servo loop connects servo-cylinder hydraulic fluid port I；20, second servo loop connects servo-cylinder hydraulic fluid port II.
Specific implementation mode
The preferred embodiment of the present invention is described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
Refering to fig. 1 with shown in Fig. 2, a kind of double loop power steering stgear, including shell 3, bottom cover 2, rack piston 7, rocking arm
Axle assembly 12, upper cover 11 and plane bearing 10, the bottom cover 2 are fixed on the left-hand end of shell 3, the rocker arm shaft and side cover assembly
12 are arranged in 3 inside of shell and are intermeshed connection with the side of rack piston 7, and the upper cover 11 is fixed on the right side of shell 3
On end, 7 inside of the rack piston is connected with course changing control valve assembly 8,8 right-hand end of course changing control valve assembly and plane
Bearing 10 is rotatably connected, and shell cavity of resorption 15 is equipped on the inside of the shell 3 and between rack piston 7 and bottom cover 2, described
It is equipped with shell epicoele 16 at 3 inner left wall of shell and positioned at 7 right-hand end of rack piston, 3 right-hand end of the shell is equipped with first time
Road oil inlet 13 and the first circuit oil return opening 14,3 right-hand end of the shell is additionally provided with second servo loop oil inlet 17, second servo loop returns
Hydraulic fluid port 18, second servo loop connect servo-cylinder hydraulic fluid port 19, second servo loop connects servo-cylinder oil 20.
The course changing control valve assembly 8 is mounted on by steel ball 4, steel ball conduit 5, vessel clamp 6 on rack piston 7, described
Course changing control valve assembly 8 forms the screw pair that can be moved to axial with rack piston 7.
First circuit oil inlet 13 and the first circuit oil return opening 14, second servo loop oil inlet 17, second servo loop oil return
Mouth 18, second servo loop connects servo-cylinder hydraulic fluid port 19, second servo loop connects servo-cylinder oil 20 and is connected at 3 right-hand end inner wall of shell.
The plane bearing 10 is embedded in 11 inside of upper cover, and is sleeved at the outer circle of 8 right-hand end of course changing control valve assembly.
It is additionally provided with a piece of flat pad 9, the flat pad 9 between 8 right-hand end of course changing control valve assembly and shell 3
It is sleeved at the outer circle of 8 right-hand end of course changing control valve assembly.
The outside of the bottom cover 2 is equipped with flange face bolt 1, the flange face bolt 1 run through or be threadedly coupled after bottom cover 2 and
3 left-hand end of shell is threadedly coupled.
A kind of working method of double loop power steering stgear, includes the following steps：1), rack piston 7 passes through steel ball conduit
5, vessel clamp 6, steel ball 4 connect to form screw pair with course changing control valve assembly 8；2), rack piston 7 again with rocking arm axle assembly
12 form a pair of of rack and pinion engagement kinematic pair；3), when rotating course changing control valve assembly 8, drive rack piston 7 in shell 3
It is axially moved in interior shell epicoele 16 and shell cavity of resorption 15, to drive rocking arm axle assembly 12 with axis oscillating；4), exist
All pipelines are connected, after the oil pump for starting two sets of circuits, rotation rocking arm axle assembly 12, course changing control valve assembly 8 can basis at this time
The flow direction of rotation input shaft distribution hydraulic oil clockwise or counterclockwise, and oil pressure is established according to loading condition；5), when
When primary Ioops oil inlet 13 injects high pressure oil, under the distribution of course changing control valve assembly 8, high pressure oil enters shell cavity of resorption 15 or shell
Body epicoele 16 pushes rack piston 7 to drive rocker arm shaft 12 along axis oscillating, to drive vehicle to carry out steering running, low pressure oil
Oil tank is then flowed back to by oil return opening 14；6), when second servo loop oil inlet 17 injects high pressure oil, in course changing control valve assembly 8
Under distribution, high-pressure oil flow connects servo-cylinder hydraulic fluid port 19 or second servo loop servo-cylinder hydraulic fluid port 20 to second servo loop, and second servo loop connects power-assisted
Cylinder hydraulic fluid port 19 or second servo loop servo-cylinder hydraulic fluid port 20 can connect vehicle the second steeraxle power-assisted oil cylinder or be distributed in the first steeraxle both sides
Unidirectional power-assisted oil cylinder, to drive vehicle to carry out steering running, low pressure oil then passes through second servo loop oil inlet 17, second servo loop
Oil return opening 18 flows back to oil tank.
In the present embodiment, shell 3 is integral housing, i.e. course changing control valve assembly 8 and rack piston 7 is all disposed within
In shell 3, individual valve body is saved, structure is simplified, alleviates weight, 3 upper end of shell is disposed with and course changing control valve assembly 8
The two groups of oil inlet and oil return mouths to match and four auxiliary hydraulic fluid ports for connecing servo-cylinder, and course changing control valve assembly 8 can be independent with two groups
The circuit of work is simultaneously axially fixed in plus lid 11 in shell 3 by plane bearing 10, flat pad 9.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work should all be covered subject to the new protection domain of this practicality.
Claims (7)
1. a kind of double loop power steering stgear, including shell, bottom cover, rack piston, rocking arm axle assembly, upper cover and plane bearing,
It is characterized in that：The bottom cover is fixed on the left-hand end of shell, the rocker arm shaft and side cover assembly be arranged case inside and with
The side intermeshing connection of rack piston, the upper cover are fixed on the right-hand end of shell, connection on the inside of the rack piston
There are course changing control valve assembly, the course changing control valve assembly right-hand end to be rotatably connected with plane bearing, the case inside,
And shell cavity of resorption is equipped between rack piston and bottom cover, at the shell inner left wall and it is located at rack piston right-hand end
Equipped with shell epicoele, the shell right-hand end is equipped with the first circuit oil inlet and the first circuit oil return opening, the shell right-hand end
Be additionally provided with second servo loop oil inlet, second servo loop oil return opening, second servo loop connect servo-cylinder hydraulic fluid port, second servo loop connect servo-cylinder oil.
2. a kind of double loop power steering stgear according to claim 1, it is characterised in that：The course changing control valve assembly is logical
It crosses steel ball, steel ball conduit, vessel clamp to be mounted on rack piston, the course changing control valve assembly can be opposite with rack piston formation
The screw pair of axial movement.
3. a kind of double loop power steering stgear according to claim 1, it is characterised in that：First circuit oil inlet and
First circuit oil return opening, second servo loop oil inlet, second servo loop oil return opening, second servo loop connect servo-cylinder hydraulic fluid port, second servo loop connects
Servo-cylinder oil is connected at shell right-hand end inner wall.
4. a kind of double loop power steering stgear according to claim 1, it is characterised in that：The plane bearing is embedded in
Lid inside, and be sleeved at the outer circle of course changing control valve assembly right-hand end.
5. a kind of double loop power steering stgear according to claim 1, it is characterised in that：The course changing control valve assembly is right
A piece of flat pad is additionally provided between side and shell, the flat pad is sleeved on the outer circle of course changing control valve assembly right-hand end
Place.
6. a kind of double loop power steering stgear according to claim 1, it is characterised in that：The outside of the bottom cover is equipped with method
Blue face bolt, the flange face bolt are threadedly coupled after running through or being threadedly coupled bottom cover with shell left-hand end.
7. a kind of working method of double loop power steering stgear according to claim 1, it is characterised in that：Including following step
Suddenly：
1), rack piston connects to form screw pair by steel ball conduit, vessel clamp, steel ball and course changing control valve assembly；
2), rack piston forms a pair of of rack and pinion engagement kinematic pair with rocking arm axle assembly again；
3), when rotating course changing control valve assembly, shell epicoele of the rack piston in shell is driven to make axis with intracavitary under shell
To movement, to drive rocking arm axle assembly with axis oscillating；
4) all pipelines, are being connected, after the oil pump for starting two sets of circuits, are rotating rocking arm axle assembly, at this time course changing control valve assembly
Can be according to the flow direction of rotation input shaft distribution hydraulic oil clockwise or counterclockwise, and oil pressure is established according to loading condition；
5), when the first circuit oil inlet injects high pressure oil, under the distribution of course changing control valve assembly, high pressure oil enters under shell
Chamber or shell epicoele push rack piston to drive rocker arm shaft along axis oscillating, to drive vehicle to carry out steering running, low pressure oil
Oil tank is then flowed back to by oil return opening；
6), when second servo loop oil inlet injects high pressure oil, under the distribution of course changing control valve assembly, high-pressure oil flow is to second time
Road connects servo-cylinder hydraulic fluid port or second servo loop servo-cylinder hydraulic fluid port, and second servo loop connects servo-cylinder hydraulic fluid port or second servo loop servo-cylinder hydraulic fluid port can
It connects vehicle the second steeraxle power-assisted oil cylinder or is distributed in the unidirectional power-assisted oil cylinder of the first steeraxle both sides, to drive vehicle to be turned to
Running, low pressure oil then flow back to oil tank by second servo loop oil inlet, second servo loop oil return opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637803.6A CN108639147A (en) | 2018-06-20 | 2018-06-20 | A kind of double loop power steering stgear and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637803.6A CN108639147A (en) | 2018-06-20 | 2018-06-20 | A kind of double loop power steering stgear and its working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108639147A true CN108639147A (en) | 2018-10-12 |
Family
ID=63753022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810637803.6A Pending CN108639147A (en) | 2018-06-20 | 2018-06-20 | A kind of double loop power steering stgear and its working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108639147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332361A (en) * | 2020-04-18 | 2020-06-26 | 荆州恒隆汽车技术(检测)中心 | Integral double-loop steering gear assembly suitable for military off-road vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1316293A (en) * | 1969-08-08 | 1973-05-09 | Daimler Benz Ag | Power-assisted steering arrangement for vehicles |
| CN2631893Y (en) * | 2002-11-22 | 2004-08-11 | 江门市兴江转向器有限公司 | Integral dynamic steering gear of vehicle rotary valve |
| CN203528596U (en) * | 2013-10-23 | 2014-04-09 | 江苏罡阳转向系统有限公司 | Automobile hydraulic power steering gear with double-dustproof structure |
| CN204801872U (en) * | 2015-06-15 | 2015-11-25 | 江门市兴江转向器有限公司 | Integral couple of return circuit a steering system |
| CN208344327U (en) * | 2018-06-20 | 2019-01-08 | 浙江世宝股份有限公司 | A kind of double loop power steering stgear |
-
2018
- 2018-06-20 CN CN201810637803.6A patent/CN108639147A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1316293A (en) * | 1969-08-08 | 1973-05-09 | Daimler Benz Ag | Power-assisted steering arrangement for vehicles |
| CN2631893Y (en) * | 2002-11-22 | 2004-08-11 | 江门市兴江转向器有限公司 | Integral dynamic steering gear of vehicle rotary valve |
| CN203528596U (en) * | 2013-10-23 | 2014-04-09 | 江苏罡阳转向系统有限公司 | Automobile hydraulic power steering gear with double-dustproof structure |
| CN204801872U (en) * | 2015-06-15 | 2015-11-25 | 江门市兴江转向器有限公司 | Integral couple of return circuit a steering system |
| CN208344327U (en) * | 2018-06-20 | 2019-01-08 | 浙江世宝股份有限公司 | A kind of double loop power steering stgear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332361A (en) * | 2020-04-18 | 2020-06-26 | 荆州恒隆汽车技术(检测)中心 | Integral double-loop steering gear assembly suitable for military off-road vehicle |
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