CN208344327U - A kind of double loop power steering stgear - Google Patents
A kind of double loop power steering stgear Download PDFInfo
- Publication number
- CN208344327U CN208344327U CN201820951749.8U CN201820951749U CN208344327U CN 208344327 U CN208344327 U CN 208344327U CN 201820951749 U CN201820951749 U CN 201820951749U CN 208344327 U CN208344327 U CN 208344327U
- Authority
- CN
- China
- Prior art keywords
- shell
- hand end
- servo
- rack piston
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of double loop power steering stgears, including shell, bottom cover, rack piston, rocker arm axle assembly, upper cover and plane bearing, bottom cover is fixed on the left-hand end of shell, rocker arm shaft and side cover assembly are arranged in shell, and it is connect with the intermeshing of rack piston, upper cover is fixed on the right-hand end of shell, course changing control valve assembly is connected on the inside of rack piston, course changing control valve assembly right-hand end and plane bearing are rotatablely connected, case inside, and shell cavity of resorption is equipped between rack piston and bottom cover, at shell inner left wall, and it is located at rack piston right-hand end and is equipped with shell epicoele, 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 utility model solves vehicle and loses Steering hydraulic power-assisted rear steering difficulty and the manufacture of in stays and big flow oil pump are not easy the problem easily unstable when big with diverter working flow.
Description
Technical field
The utility model relates to vehicle steering device fields, and in particular to a kind of double loop power steering stgear and its work side
Method.
Background technique
Power steering stgear is generally equipped in commercial vehicle steering system, and on heavy vehicles, it is big due to turning to load per axle,
Therefore steering resistence is very big, generallys use 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, diverter 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 greater 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 vehicle and lose problem in stays after steering hydraulic power-assisted.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of double loop power steering stgears, and which solve vehicle forfeitures
Steering hydraulic power-assisted rear steering difficulty and problem in stays, and solve the manufacture of big flow oil pump and be not easy and diverter work
Make flow it is big when easily unstable problem.
To solve the above problems, the utility model adopts the following technical solution:
A kind of double loop power steering stgear, including shell, bottom cover, rack piston, rocker 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 and side cover assembly are arranged in case inside and and rack piston
Side be intermeshed 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, at the shell inner left wall and is located at rack piston right-hand end and is equipped with shell
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 rack piston by steel ball, steel ball conduit, vessel clamp,
The steering control valve and rack piston form the screw pair that can be moved to axial.
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 covers the outer circle in 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 covers 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 after lid with shell left-hand end.
The beneficial effects of the utility model are: a kind of double loop power steering stgear of the utility model can match two independent oil
Pump constitutes two sets of performance loops, has when certain primary Ioops occurs abnormal, and another circuit is unaffected, and continuation can give steering system
Power-assisted is provided, solves the problems, such as that vehicle loses steering hydraulic power-assisted rear steering difficulty and in stays.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of double loop power steering stgear of the utility model；
Fig. 2 is the cross-sectional view in the direction A-A at the utility model Fig. 1.
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 gear
Piston；8, course changing control valve assembly；9, flat pad；10, plane bearing；11, upper cover；12, rocker 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 embodiment
The preferred embodiment of the utility model is described in detail below, so that the advantages of the utility model and feature energy
It is easier to be readily appreciated by one skilled in the art, to be more clearly defined the protection scope of the utility model.
Refering to fig. 1 and shown in Fig. 2, a kind of double loop power steering stgear, including shell 3, bottom cover 2, rack piston 7, rocker 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, course changing control valve assembly 8,8 right-hand end of course changing control valve assembly and plane are connected on the inside of the rack piston 7
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
At 3 inner left wall of shell and it is located at 7 right-hand end of rack piston equipped with shell epicoele 16,3 right-hand end of shell is equipped with first time
Road oil inlet 13 and the first circuit oil return opening 14,3 right-hand end of 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 rack piston 7 by steel ball 4, steel ball conduit 5, vessel clamp 6, described
Course changing control valve assembly 8 and rack piston 7 form the screw pair that can be moved to axial.
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 covers at the outer circle of 8 right-hand end of course changing control valve assembly.
A piece of flat pad 9, the flat pad 9 are additionally provided between 8 right-hand end of course changing control valve assembly and shell 3
It covers 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, comprising the following steps: 1), rack piston 7 pass 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 rocker 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 rocker arm axle assembly 12 with axis oscillating；4) it, is connecing
All pipelines are got well, after the oil pump for starting two sets of circuits, rotate rocker arm axle assembly 12, course changing control valve assembly 8 can be according to suitable at this time
Hour hands still rotate counterclockwise the flow direction of input shaft distribution hydraulic oil, and establish oil pressure according to loading condition；5), when first time
When road oil inlet 13 injects high pressure oil, under the distribution of course changing control valve assembly 8, high pressure oil enters on shell cavity of resorption 15 or shell
Chamber 16 pushes rack piston 7 to drive rocker arm shaft 12 along axis oscillating, so that vehicle be driven to carry out steering running, low pressure oil is then led to
It crosses oil return opening 14 and flows back to oil tank；6), when second servo loop oil inlet 17 injects high pressure oil, in the distribution of course changing control valve assembly 8
Under, 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 servo-cylinder oil
Mouth 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 list of the first steeraxle two sides
To 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 flow 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 shell
In body 3, individual valve body is saved, structure is simplified, alleviates weight, 3 upper end of shell is disposed with and 8 phase of course changing control valve assembly
Matched two groups of oil inlet and oil return mouths and four auxiliary hydraulic fluid ports for connecing servo-cylinder, and course changing control valve assembly 8 can independent work with two groups
The circuit of work is simultaneously axially fixed in shell 3 by plane bearing 10, flat pad 9 plus lid 11.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any change or replacement expected without creative work should all be covered subject to this practical new protection scope.
Claims (6)
1. a kind of double loop power steering stgear, including shell, bottom cover, rack piston, rocker arm axle assembly, upper cover and plane bearing,
It is characterized by: 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 of rack piston is intermeshed connection, and the upper cover is fixed on the right-hand end of shell, connection on the inside of the rack piston
There is course changing control valve assembly, the course changing control valve assembly right-hand end is 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 cover 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 covers the outer circle in 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820951749.8U CN208344327U (en) | 2018-06-20 | 2018-06-20 | A kind of double loop power steering stgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820951749.8U CN208344327U (en) | 2018-06-20 | 2018-06-20 | A kind of double loop power steering stgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208344327U true CN208344327U (en) | 2019-01-08 |
Family
ID=64883983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820951749.8U Expired - Fee Related CN208344327U (en) | 2018-06-20 | 2018-06-20 | A kind of double loop power steering stgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208344327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639147A (en) * | 2018-06-20 | 2018-10-12 | 浙江世宝股份有限公司 | A kind of double loop power steering stgear and its working method |
-
2018
- 2018-06-20 CN CN201820951749.8U patent/CN208344327U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639147A (en) * | 2018-06-20 | 2018-10-12 | 浙江世宝股份有限公司 | A kind of double loop power steering stgear and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 Termination date: 20210620 |