CN200988506Y - Electric control hydraulic steering by-pass valve - Google Patents
Electric control hydraulic steering by-pass valve Download PDFInfo
- Publication number
- CN200988506Y CN200988506Y CN 200620065348 CN200620065348U CN200988506Y CN 200988506 Y CN200988506 Y CN 200988506Y CN 200620065348 CN200620065348 CN 200620065348 CN 200620065348 U CN200620065348 U CN 200620065348U CN 200988506 Y CN200988506 Y CN 200988506Y
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- hole
- valve body
- spool
- valve
- cavity
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Abstract
The utility model relates to an electronic control hydraulic steering bypass valve of automobile hydraulic steering gear, comprising a valve body (1), a valve core (2), a valve sleeve (3), a bearing (4), a plug (5), a coupling band (6), a step motor (7) which is connected with the valve core by the couple band, a cavity (8) positioned between the rear of valve core and the bottom of the valve body intra-cavity. The valve core comprises a central oil hole (23) which is communicated with the cavity and a radial oil hole (24). The valve sleeve comprises a through hole (31) which is communicated with the radial oil hole and a ring groove (12) in the valve body. An oil inlet hole (13) which is communicated with the ring groove and an oil outlet hole (14) which is communicated with the cavity (8) are arranged on the wall of the valve body. The oil flow entering the upper and lower cylinder of the power steering gear is controlled and the fixed hand force characteristic curve of steering control valve is turned into a controllable curve so that the assembly characteristic curve of the steering gear can be changed continuously. The utility model has the advantages of simple structure, easy manufacturing process, low manufacturing cost, high control precision and stable quality.
Description
Technical field
The utility model relates to the electric-controlled hydraulic that a kind of automobile hydraulic steering device uses and turns to bypass disc.
Background technology
Along with the continuous development of auto-industry, the user is also more and more higher to the requirement of automobile operation control and function, with regard to power steering, both required when low speed turns to feel light, simultaneously also require good stability when running at high speed, not unstable, and can also realize the high speed emergency turn.The power steering that uses in a large number is hydraulic steering gear now, only has fixing hand-power characteristic, modulated pressure is single characteristic steering control valve, only has single characteristic curve, turn to feel light if satisfy low speed, the stable out of reach requirement of then running at high speed if instead it is good to satisfy high stability, is not then satisfied low speed and is turned to the light requirement of feel.Applied for " the two characteristic rotary valves of automobile power steering " of Chinese utility model patent, the patent No. is ZL00210849.6, and the applying date is on February 16th, 2000, and notification number is CN2406896, and the day for announcing is on November 22nd, 2000; This utility model patent has solved only has single characteristic problem, it makes rotary valve by the suitable improvement to common rotary valve structure is that steering control valve can be exported two different characteristic curves, be between high low speed valve port, to establish by-pass prot on the structure, by the solenoid control bypass circulation, bypass circulation connects by-pass prot; Reach the control of rotary valve being supplied with oil mass manually or by control circuit automatic guidance electromagnetic valve switch by chaufeur, make vehicle when low speed driving, can adopt the low-speed characteristic curve of light hand-power to turn to light requirement, and the high speed characteristics curve that can adopt relative heavier hand-power when high speed is to obtain the feel of necessity to satisfy.But the processing of electromagnetic valve, assembling are complicated, also out of reach requirement aspect control accuracy, and also the electromagnetic valve spring distortion occurs after using after a while, have a strong impact on control accuracy, in addition uncontrollable, and it is higher to influence cost; Select high low speed curve with hand switch simultaneously, be unfavorable for practical operation.
The utility model content
The technical problems to be solved in the utility model provides a kind of can control and enters the power steering oily flow of oil cylinder up and down, the fixedly hand-power characteristic curve of steering control valve is become the controollable curve, realize that the characteristic of steering assembly continuously changes, reach low speed and turn to light and flexible, the stable effect of running at high speed, and simple in structure, be easy to processing, low cost of manufacture, the stay-in-grade again electric-controlled hydraulic of control accuracy height and turn to bypass disc.
For solving the problems of the technologies described above, the technical solution of the utility model is: electric-controlled hydraulic of the present utility model turns to bypass disc to comprise valve body and spool, it is characterized in that: in valve body except that spool is installed, valve pocket also is installed, bearing, plug screw, coupling band, an end is equipped with stepping motor outside valve body in addition, wherein valve body and stepping motor bonded assembly end have the flange of a translator mounting hole, valve pocket outer cylinder and body cavity interference fit, its endoporus is placed spool, bearing fit between spool and the valve pocket, bearing installation is at spool edge, plug screw is threaded with body cavity, and be socketed on the extended axle journal of spool and roof pressure bearing, coupling band is linked together the rotating shaft of extended spindle nose of axle journal and stepping motor, there is distance to form cavity between the afterbody of described spool and the body cavity bottom, described spool is provided with axial central oilhole that communicates with this cavity and the radial direction oil hole that communicates with this central authorities' oilhole, described axle journal is provided with the radial direction through hole that communicates with central oilhole port, there is pit at one end center of described plug screw roof pressure bearing, this pit and bearing face and journal surface are formed a toroidal cavity, described radial direction through hole communicates with this toroidal cavity, described valve pocket is provided with through hole corresponding with radial direction oil hole and that communicate, described body cavity is provided with circular groove one, also be provided with the oil outlet of going into oilhole and communicating that communicates with this circular groove on the wall with cavity, the through hole of described valve pocket also communicates with this circular groove, in addition, between the thread end of plug screw and body cavity, also have oil sealing, on the socket face between plug screw and the axle journal, also have the shafting oil envelope.
Described radial direction oil hole and through hole have at least one and quantity and position corresponding one by one respectively, have plurally, and radial direction oil hole and cooresponding through hole are all along same circumference uniform distribution, but and the light beam face capping through hole between the adjacent radial oilhole.Select to accelerate when a plurality of the circulation of oil.
Described bearing is a kind of antifriction-bearing box.Help the rotation control of spool.
Described coupling band with a kind of connecting mode of stepping motor and spool is: connecting of the rotating shaft of described coupling band and stepping motor is that interference fit connects, with connecting of spindle nose of spool be that polygon free-running fit sleeve connects.
Described coupling band with the another kind of connecting mode of stepping motor and spool is: described coupling band respectively be polygon free-running fit sleeve connecting of the rotating shaft of stepping motor and spindle nose and connect.
Also have installation foot on the described valve body cylindrical and be arranged on mounting hole on this installation foot.
The described stepping motor of installing outside valve body also has motor shroud, and wherein stepping motor is fixed on the motor shroud, and motor shroud is fixed on the flange of valve body.
The beneficial effects of the utility model are: after adopting said structure, it is installed in the head of steering assembly, go into oilhole and switch through output oil duct to control cock, oil outlet takes back oil duct, rotate by controller output pulse signal control step motor by obtaining vehicle speed signal, make the rotational angle of this bypass disc of step motor control spool can be as accurate as 0.06 °, allow the oily flow that enters this bypass disc change, can realize that bypass flow is from the 0 stepless variation to maximum, can control and enter the power steering oily flow of oil cylinder up and down, promptly can realize the characteristic stepless adjustment of steering control valve, changed the steering control valve characteristic, the fixedly hand-power characteristic curve of steering control valve is become the controollable curve, realize cornering properties requirements different under the different speed of a motor vehicle.When the speed of a motor vehicle was low, the aperture of bypass disc was little, and the flow of bypass disc is little, and as shown in figure 23, the hand-power characteristic curve is little " V " shape, and the steering sensitivity height of deflector this moment turns to feel light, flexible; When the speed of a motor vehicle was higher, the aperture of bypass disc was big, and the flow of bypass disc is big, and as shown in figure 23, the hand-power characteristic curve is " U " shape, and the steering sensitivity of deflector this moment is low, travels steadily, not unstable, kept good road feel during high speed.Simultaneously the utility model simple in structure, be easy to processing, low cost of manufacture, also reached the stay-in-grade again purpose of control accuracy height.
Description of drawings
Fig. 1 is the structure cutaway view that the utility model electric-controlled hydraulic turns to bypass disc.
Fig. 2 is the valve body structure cutaway view that the utility model electric-controlled hydraulic turns to bypass disc.
Fig. 3 is the right elevation of Fig. 2 valve body.
Fig. 4 is the left view of Fig. 2 valve body.
Fig. 5 is the birds-eye view of Fig. 2 valve body.
Fig. 6 is the valve core structure cutaway view that the utility model electric-controlled hydraulic turns to bypass disc.
Fig. 7 is that Fig. 6 spool spindle nose is tetragonal right elevation.
Fig. 8 is that Fig. 6 spool spindle nose is hexagonal right elevation.
Fig. 9 is that Fig. 6 spool spindle nose is oblate right elevation.
Figure 10 is the structure cutaway view that the utility model electric-controlled hydraulic turns to the coupling band band square centre hole of bypass disc.
Figure 11 is the birds-eye view of Figure 10 coupling band.
Figure 12 is the upward view of Figure 10 coupling band.
Figure 13 is the structure cutaway view that the utility model electric-controlled hydraulic turns to the coupling band band hexagonal centre hole of bypass disc.
Figure 14 is the birds-eye view of Figure 13 coupling band.
Figure 15 is the structure cutaway view that the utility model electric-controlled hydraulic turns to the coupling band belt length hole shape centre hole of bypass disc.
Figure 16 is the birds-eye view of Figure 15 coupling band.
Figure 17 is the upward view of Figure 15 coupling band.
Figure 18 is the cross-sectional view of the through hole of the radial direction oil hole of the utility model electric-controlled hydraulic spool of turning to bypass disc and cooresponding valve pocket when respectively being one.
Figure 19 is the cross-sectional view of the through hole of the radial direction oil hole of the utility model electric-controlled hydraulic spool of turning to bypass disc and cooresponding valve pocket when respectively being two.
Figure 20 is the cross-sectional view of the through hole of the radial direction oil hole of the utility model electric-controlled hydraulic spool of turning to bypass disc and cooresponding valve pocket when respectively being three.
Figure 21 is the plug screw structure cutaway view that the utility model electric-controlled hydraulic turns to bypass disc.
Figure 22 is the birds-eye view of Figure 21.
Figure 23 is that the utility model electric-controlled hydraulic turns to bypass disc can make the hand-power performance diagram of steering control valve output.
The specific embodiment
Turn to bypass disc to be described in more detail below in conjunction with accompanying drawing to electric-controlled hydraulic of the present utility model.
Shown in Fig. 1～22, electric-controlled hydraulic of the present utility model turns to bypass disc to comprise valve body 1 and spool 2, in valve body 1 except that spool 2 is installed, valve pocket 3 also is installed, bearing 4, plug screw 5, coupling band 6, an end is equipped with stepping motor 7 outside valve body 1 in addition, wherein valve body 1 and stepping motor 7 bonded assembly ends have the flange 104 of a translator mounting hole 103, valve pocket 3 outer cylinders and valve body 1 inner chamber interference fit, its endoporus is placed spool 2, bearing fit between spool 2 and the valve pocket 3, bearing 4 is installed in spool 2 edges, plug screw 5 is connected with valve body 1 thread in inner cavity, and be socketed on the spool 2 extended axle journals 21 and roof pressure bearing 4, coupling band 6 is linked together the rotating shaft 71 of axle journal 21 extended spindle noses 22 and stepping motor 7, there is distance to form cavity 8 between the afterbody of described spool 2 and valve body 1 intracavity bottom, described spool 2 is provided with axial central oilhole 23 that communicates with this cavity 8 and the radial direction oil hole 24 that communicates with this central authorities' oilhole 23, described axle journal 21 is provided with the radial direction through hole 211 that communicates with central oilhole 23 ports, there is pit 51 at one end center of described plug screw 5 roof pressure bearings 4, this pit 51 and bearing 4 end faces and toroidal cavity 9 of axle journal 21 surface compositions, described radial direction through hole 211 communicates with this toroidal cavity 9, make oil by coming lubricating bearings 4, described valve pocket 3 is provided with through hole 31 corresponding with radial direction oil hole 24 and that communicate, described valve body 1 inner chamber is provided with circular groove 12 one, also be provided with the oil outlet 14 of going into oilhole 13 and communicating that communicates with this circular groove 12 on the wall with cavity 8, the through hole 31 of described valve pocket 3 also communicates with this circular groove 12, in addition, between the thread end of plug screw 5 and valve body 1 inner chamber, also have oil sealing 10, on the socket face between plug screw 5 and the axle journal 21, also have shafting oil envelope 11.
In the such scheme, bearing 4 can be selected plain bearing or antifriction-bearing box, if select plain bearing preferably to select oil-containing sliding bearing for use, if select antifriction-bearing box, preferably angular contact ball bearing or deep groove ball bearing, present embodiment centre bearer 4 is selected angular contact ball bearings.
In the such scheme, described radial direction oil hole 24 and through hole 31 have at least one and quantity and position corresponding one by one respectively, have plurally, radial direction oil hole 24 and cooresponding through hole 31 are all along same circumference uniform distribution, but and the light beam face capping through hole 31 between the adjacent radial oilhole 24.Promptly be the through hole 31 of no matter radial direction oil hole 24 and valve pocket 3 have what, quantity and position are all corresponding one by one, and will be when spool 2 rotations, can make the connection of radial direction oil hole 24 and through hole 31 have standard-sized sheet and full-shut position gets final product.Having shown three kinds of modes in the present embodiment, from Figure 18, is that radial direction oil hole 24 and cooresponding through hole 31 respectively have one structure, from Figure 19, being that radial direction oil hole 24 and cooresponding through hole 31 respectively have two structure, from Figure 20, is that radial direction oil hole 24 and cooresponding through hole 31 respectively have three structure.At this moment control step motor 7 just requires to set the anglec of rotation by turns that each radial direction oil hole needs by turns by radial direction oil hole 24 distributions.
The material that the material of making valve pocket 3 should select plain bearing to use is better.
Oil sealing 10 and shafting oil envelope 11 can adopt O-ring seals.
Described coupling band with a kind of connecting mode of stepping motor and spool is: coupling band 6 is that interference fit connects with the connecting of rotating shaft 71 of stepping motor 7, is that polygon free-running fit sleeve connects with the connecting mode of spindle nose 22.This situation will be inserted in spindle nose 22 earlier again after in the rotating shaft 71 of coupling band 6 threading stepping motors 7, polygon free-running fit sleeve connects the three kinds of modes that shown in the present embodiment, from Fig. 7,10-12, first kind is square free-running fit sleeve connecting mode, the cross sectional shape of rotating shaft 71 and spindle nose 22 is a square, and center, coupling band 6 two ends has adaptive square centre hole 61; From Fig. 8,13-14, second kind is hexagon free-running fit sleeve connecting mode, and the cross sectional shape of rotating shaft 71 and spindle nose 22 is a hexagon, and center, coupling band 6 two ends has adaptive hexagonal centre hole 62; From Fig. 9,15-17, the third is a long hole shape free-running fit sleeve connecting mode, and the cross sectional shape of rotating shaft 71 and spindle nose 22 is oblate, and promptly an opposite side is a straight flange, and another opposite side is a round edge, and center, coupling band 6 two ends has adaptive long hole shape centre hole 63; Above-mentioned three kinds of coupling bands 6 connect with rotating shaft 71 interference fit respectively and spindle nose 22 free-running fit sleeves connect, and free-running fit is the scale error in order to eliminate processing and to install.Certainly, an end of interference fit connection can also be circular.
Described coupling band with the another kind of connecting mode of stepping motor and spool is: coupling band 6 is polygon free-running fit sleeve with the connecting mode of the rotating shaft 71 of stepping motor 7 and spindle nose 22 respectively and connects.Coupling band 6, rotating shaft 71 and spindle nose 22 shapes are as above-mentioned first kind of connecting mode, and just coupling band 6 connects with also adopting the free-running fit sleeve cooperating of rotating shaft 71, is more suitable for the scale error of eliminating processing and installing.
In order to make spool that better folding be arranged and to the distribution of oil, through hole 31 diameters preferably are slightly less than the diameter of radial direction oil hole 24 and the width of circular groove 12, be beneficial to hold to press and sealing.
In order to install better and to fix, also have installation foot 101 on described valve body 1 cylindrical and be arranged on mounting hole 102 on this installation foot.Be used for fixing head at steering assembly.
In order to guarantee the safety of motor better, the described stepping motor of installing outside valve body 17 also has motor shroud 72, and wherein stepping motor 7 is screwed in the inside of motor shroud 72, and motor shroud 72 is screwed on the flange 104 of valve body 1.
Simultaneously on the motor shroud 72 fixedly the screw of stepping motor 7 usefulness hinder motor shroud 72 to be close on the flange 104 of valve body 1 to install, breach can be left in the edge of flange 104.
In use, to go into oilhole 13 and switch through output oil duct to control cock, oil outlet 14 takes back oil duct, rotate by controller output pulse signal control step motor 7 by obtaining vehicle speed signal, make the rotation of stepping motor 7 by coupling band 6 this bypass disc of control spools 2, rotational angle can be as accurate as 0.06 degree, when spool 2 turns to radial direction oil hole 24 and through hole 31 on the valve pocket 3 docks all-pass, go into oilhole 13, through hole 31, radial direction oil hole 24, central authorities' oilhole 23, cavity 8, they constitute the all-pass oil circuit together oil outlet 14, the oil of steering control valve enters the flow maximum of bypass disc, the oil mass of emitting is maximum, controlled and enter power steering up and down the oily flow of oil cylinder is minimum, thereby reduced the steering sensitivity of deflector; When spool 2 turns to radial direction oil hole 24 when staggering sealing with through hole 31 on the valve pocket 3, it is minimum that the oil of steering control valve enters the flow of bypass disc, the oil mass of emitting is minimum, has controlled to enter power steering up and down the oily flow of oil cylinder is maximum, thereby has improved the steering sensitivity of deflector; In the rotation process of spool 2, the oily flow that enters this bypass disc changes gradually, can realize that bypass flow is from the 0 stepless variation to maximum, promptly can realize the characteristic stepless adjustment of steering control valve, changed the steering control valve characteristic, the fixedly hand-power characteristic curve of steering control valve is become the controollable curve, realize cornering properties requirements different under the different speed of a motor vehicle.When the speed of a motor vehicle was low, the aperture of bypass disc was little, and the flow of bypass disc is little, and as shown in figure 23, the hand-power characteristic curve is little " V " shape, and the steering sensitivity height of deflector this moment turns to feel light, flexible; When the speed of a motor vehicle was higher, the aperture of bypass disc was big, and the flow of bypass disc is big, and as shown in figure 23, the hand-power characteristic curve is " U " shape, and the steering sensitivity of deflector this moment is low, travels steadily, not unstable, kept good road feel during high speed.
Claims (7)
1. an electric-controlled hydraulic turns to bypass disc, comprise valve body (1) and spool (2), it is characterized in that: in valve body (1) except that spool (2) is installed, valve pocket (3) also is installed, bearing (4), plug screw (5), coupling band (6), an end is equipped with stepping motor (7) outside valve body (1) in addition, wherein valve body (1) and stepping motor (7) bonded assembly end have the flange (104) of a translator mounting hole (103), valve pocket (3) outer cylinder and valve body (1) inner chamber interference fit, its endoporus is placed spool (2), bearing fit between spool (2) and the valve pocket (3), bearing (4) is installed in spool (2) edge, plug screw (5) is connected with valve body (1) thread in inner cavity, and be socketed in that the extended axle journal of spool (2) (21) is gone up and roof pressure bearing (4), coupling band (6) is linked together the rotating shaft (71) of extended spindle nose of axle journal (21) (22) and stepping motor (7), there is distance to form cavity (8) between the afterbody of described spool (2) and valve body (1) intracavity bottom, described spool (2) is provided with axial central oilhole (23) that communicates with this cavity (8) and the radial direction oil hole (24) that communicates with this central authorities' oilhole (23), described axle journal (21) is provided with the radial direction through hole (211) that communicates with central oilhole (23) port, there is pit (51) at one end center of described plug screw (5) roof pressure bearing (4), this pit (51) and bearing (a 4) end face and axle journal (a 21) toroidal cavity of surface composition (9), described radial direction through hole (211) communicates with this toroidal cavity (9), described valve pocket (3) is provided with through hole (31) corresponding with radial direction oil hole (24) and that communicate, described valve body (1) inner chamber is provided with one circular groove (12), also be provided with the oil outlet (14) of going into oilhole (13) and communicating that communicates with this circular groove (12) on the wall with cavity (8), the through hole (31) of described valve pocket (3) also communicates with this circular groove (12), in addition, between the thread end of plug screw (5) and valve body (1) inner chamber, also have oil sealing (10), on the socket face between plug screw (5) and the axle journal (21), also have shafting oil envelope (11).
2. electric-controlled hydraulic according to claim 1 turns to bypass disc, it is characterized in that: described radial direction oil hole (24) and through hole (31) have at least one and quantity and position corresponding one by one respectively, have plural, radial direction oil hole (24) and cooresponding through hole (31) be all along same circumference uniform distribution, and adjacent radial oilhole (24) but between light beam face capping through hole (31).
3. electric-controlled hydraulic according to claim 1 turns to bypass disc, it is characterized in that: described bearing (4) is a kind of antifriction-bearing box.
4. electric-controlled hydraulic according to claim 1 turns to bypass disc, it is characterized in that: described coupling band (6) is that interference fit connects with the connecting of rotating shaft (71) of stepping motor (7), is that polygon free-running fit sleeve connects with the connecting mode of spindle nose (22).
5. electric-controlled hydraulic according to claim 1 turns to bypass disc, it is characterized in that: described coupling band (6) is polygon free-running fit sleeve with the connecting mode of the rotating shaft (71) of stepping motor (7) and spindle nose (22) respectively and connects.
6. electric-controlled hydraulic according to claim 1 turns to bypass disc, it is characterized in that: also have installation foot (101) on described valve body (1) cylindrical and be arranged on mounting hole (102) on this installation foot.
7. turn to bypass disc according to each described electric-controlled hydraulic of claim 1-6, it is characterized in that: the described stepping motor of outside valve body (1), installing (7), also has motor shroud (72), wherein stepping motor (7) is fixed on the motor shroud (72), and motor shroud (72) is fixed on the flange (104) of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620065348 CN200988506Y (en) | 2006-09-29 | 2006-09-29 | Electric control hydraulic steering by-pass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620065348 CN200988506Y (en) | 2006-09-29 | 2006-09-29 | Electric control hydraulic steering by-pass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200988506Y true CN200988506Y (en) | 2007-12-12 |
Family
ID=38939546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620065348 Expired - Lifetime CN200988506Y (en) | 2006-09-29 | 2006-09-29 | Electric control hydraulic steering by-pass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200988506Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839357A (en) * | 2010-05-27 | 2010-09-22 | 无锡市书泰纺织机械有限公司 | Conversion valve |
| CN113565818A (en) * | 2021-07-22 | 2021-10-29 | 上海理工大学 | Electric control pressure regulating valve for hydraulic traction bed and control system thereof |
-
2006
- 2006-09-29 CN CN 200620065348 patent/CN200988506Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839357A (en) * | 2010-05-27 | 2010-09-22 | 无锡市书泰纺织机械有限公司 | Conversion valve |
| CN101839357B (en) * | 2010-05-27 | 2012-09-05 | 无锡市书泰纺织机械有限公司 | Conversion valve |
| CN113565818A (en) * | 2021-07-22 | 2021-10-29 | 上海理工大学 | Electric control pressure regulating valve for hydraulic traction bed and control system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
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| EXPY | Termination of patent right or utility model |