CN203318498U - Slide valve with plunger - Google Patents
Slide valve with plunger Download PDFInfo
- Publication number
- CN203318498U CN203318498U CN2013204332670U CN201320433267U CN203318498U CN 203318498 U CN203318498 U CN 203318498U CN 2013204332670 U CN2013204332670 U CN 2013204332670U CN 201320433267 U CN201320433267 U CN 201320433267U CN 203318498 U CN203318498 U CN 203318498U
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- Prior art keywords
- plunger
- counteraction
- valve body
- surface pad
- selector valve
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Abstract
The utility model relates to the field of design and application of power steering gears, in particular to a slide valve with a plunger. The slide valve with the plunger comprises a distribution valve shell, wherein a steering screw is arranged in the axial center of the distribution valve shell, a flange is arranged at one end of the distribution valve shell, an end cover is arranged at the other end of the distribution valve shell, the flange is fixed to the distribution valve shell in a rigid mode, the end cover is fixed to the distribution valve shell in a rigid mode, a distribution valve element and a counteractive plunger assembly are installed on the periphery of the steering screw in the distribution valve shell in sequence from inside to outside, thrust bearings are arranged at the two ends of the steering screw respectively, and a concave gasket and a convex gasket are arranged between each thrust bearing and the counteractive plunger assembly. The slide valve with the plunger has the advantages that the structure is simple, the size is small, the size of a steering gear can be reduced, the slide valve can be arranged on a finished automobile more conveniently, cost is saved, and manufacturing cost is reduced.
Description
Technical field
The utility model relates to power steering product design application, relates in particular to a kind of guiding valve with plunger.
Background technology
What guiding valve semi-integral power steering device applied steering torque to vehicle when turning to is the power-assisted oil cylinder, and deflector simultaneously can provide large flow, can connect in actual use more power-assisted oil cylinder, for motor turning provides larger moment.
Guiding valve semi-integral power steering device, can provide large flow high-torque to turn to, connect more power-assisted oil cylinder, for motor turning provides the larger advantages such as moment, still is widely used in military vehicle and large-tonnage construction machinery and equipment.Therefore develop the needs that new sliding valve structure is also China Automobile Industry.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of simple in structure, volume is little, the guiding valve with plunger at the bottom of cost.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of guiding valve with plunger, comprise selector valve body, the axial centre of described selector valve body is provided with steering screw, one end of described selector valve body is provided with flange, the other end of described selector valve body is provided with end cap, between described flange and selector valve body, rigidly fix, between described selector valve body and end cap, rigidly fix, the interior steering screw of described selector valve body 6 11 peripheries are equipped with from the inside to the outside successively distributes spool 4 and counteraction plunger assembly 21, be equipped with thrust baring on the two ends of described steering screw, be provided with equal concave surface pad and convex surface pad between described thrust baring and counteraction plunger assembly, described concave surface pad and convex surface pad are in contact with one another, described concave surface pad contact thrust baring, described convex surface pad contacts described distribution spool and counteraction plunger assembly.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described antagonistic force plunger assembly comprises the first counteraction plunger, pull back spring, the second counteraction plunger, described pull back spring is between the first counteraction plunger and the second counteraction plunger, and the two ends of described pull back spring connect respectively described the first counteraction plunger and described the second counteraction plunger.
Further, be provided with successively the first oil back chamber, the first power-assisted oil cylinder oil pocket, oil suction chamber, the second power-assisted oil cylinder oil pocket and the second oil back chamber on described distribution spool.
Further, described end cap is provided with jam nut, described jam nut locking thrust baring, concave surface pad, convex surface pad.
Further, described flange, selector valve body and end cap are fixed by screw rod successively.
The beneficial effects of the utility model are: the utility model is simple in structure, and volume is little, can reduce the volume of deflector, is more convenient for being arranged on car load, also provides cost savings simultaneously.Used convex surface pad and concave surface pad in the middle of thrust baring and distributing valve assembly, the effect that can automatically regulate by the sphere of two pads reduces the working accuracy of each part end face, and the difficulty of processing of part, reduce manufacturing cost.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of guiding valve with plunger of the utility model;
When Fig. 2 is the work of a kind of guiding valve with plunger of the utility model and the connection diagram of oil pump, oil tank, power-assisted oil cylinder.
In accompanying drawing, the list of parts of each label representative is as follows:
1, thrust baring, 2, the concave surface pad, 3, the convex surface pad, 4, distribute spool, 5, the first counteraction plunger, 6, selector valve body, 7, pull back spring, the 8, second counteraction plunger, 9, flange, 10, end cap, 11, steering screw, 12, jam nut, 13, the first oil back chamber, the 14, first power-assisted oil cylinder oil pocket, 15, oil suction chamber, the 16, second power-assisted oil cylinder oil pocket, 17, the second oil back chamber, 18, oil pump, 19, oil tank, 20, power-assisted oil cylinder, 21, the counteraction plunger assembly, 22, screw rod.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of guiding valve with plunger, comprise selector valve body 6, the axial centre of described selector valve body 6 is provided with steering screw 11, one end of described selector valve body 6 is provided with flange 9, the other end of described selector valve body 6 is provided with end cap 10, rigidly fix and be connected between described flange 9 and selector valve body 6, rigidly fix and be connected between described selector valve body 6 and end cap 10, described end cap 10 is provided with jam nut 12, and described flange 9, selector valve body 6 and end cap 10 are fixed by screw rod 22 successively.
The interior steering screw of described selector valve body 6 11 peripheries are equipped with from the inside to the outside successively distributes spool 4 and counteraction plunger assembly 21, be equipped with thrust baring 1 on the two ends of described steering screw 11, be provided with concave surface pad 2 and convex surface pad 3 between described thrust baring 1 and distribution spool, described concave surface pad 2 and convex surface pad 3 are in contact with one another, the flat end of described concave surface pad 2 and thrust baring 1 connect, the flat end of described convex surface pad 3 and described distribution spool 4 and counteraction plunger assembly 24 connect, described jam nut 12 locking thrust barings 1, concave surface pad 2, convex surface pad 3.
Be provided with successively the first oil back chamber 13, the first power-assisted oil cylinder oil pocket 14, oil suction chamber 15, the second power-assisted oil cylinder oil pocket 16 and the second oil back chamber 17 on described distribution spool.
Described antagonistic force plunger assembly 21 comprises the first counteraction plunger 5, pull back spring 7, the second counteraction plunger 8, described pull back spring 7 is between the first counteraction plunger 5 and the second counteraction plunger 8, and the two ends of described pull back spring 7 connect respectively described the first counteraction plunger 5 and described the second counteraction plunger 8.
When Fig. 2 is the work of a kind of guiding valve with plunger of the utility model and the connection diagram of oil pump, oil tank, power-assisted oil cylinder, the first oil back chamber and the second oil back chamber communicate with oil tank by oilhole; The first power-assisted oil cylinder oil pocket communicates with power-assisted oil cylinder one oil pocket by oilhole, oil pipe; Oil suction chamber communicates with oil pump by oilhole, oil pipe; The second power-assisted oil cylinder oil pocket communicates with another oil pocket of power-assisted oil cylinder by oilhole, oil pipe.
Specific works principle of the present utility model following (describe with left-handed deflector, the steering state of dextrorotation deflector is contrary with left-handed deflector):
1, state of equilibrium:
When bearing circle when free state (not applying steering effort), distribute the oil groove of spool 4 and selector valve body 6 not to be subject to torsional interaction, hydraulic oil enters from oil suction chamber 15, after the first power-assisted oil cylinder oil pocket 14 and the second power-assisted oil cylinder oil pocket 16, through the first oil back chamber 13 and the second oil back chamber 17, get back to oil tank.Power-assisted oil cylinder both sides are without difference of pressure, and the piston of power-assisted oil cylinder 20 does not move, without handling maneuver.Now, automobile is in the straight-line travelling state.
2, right steering state:
When the bearing circle turning clockwise, the automobile front axle load is delivered to power on steering nut by pull bar, plumbing arm, steering arm shaft, now steering screw 11 moves right, thereby the thrust baring 1, concave surface pad 2, convex surface pad 3, the distribution spool 4 that drive left side move right together with the first counteraction plunger 5, compression retracteding position spring 7, the oil groove opposite position that now distributes spool 4 and selector valve body 6 changes during for state of equilibrium, and consequent interstitial site is by the decision that turns to of bearing circle.Process this gap is by hydraulic coupling oil content dispensing the first power-assisted oil cylinder oil pocket 14 and the second power-assisted oil cylinder oil pocket 16.After distributing spool 4 to be moved to the left, make the gap of oil suction chamber 15 and the first power-assisted oil cylinder oil pocket 14 become large, the gap smaller of oil suction chamber 15 and the second power-assisted oil cylinder oil pocket 16, thereby make the pressure of pressure ratio the second power-assisted oil cylinder oil pocket 16 of the first power-assisted oil cylinder oil pocket 14 large, under this difference of pressure effect, the piston of power-assisted oil cylinder 20 overcomes cornering resistance and outwards moves, and automotive wheels is swung and realize motor turning.
3, left steering state:
When bearing circle turns left, because front load per axle is delivered to power on steering nut by pull bar, plumbing arm, steering arm shaft, now steering screw 11 is moved to the left, thereby the thrust baring 1, concave surface pad 2, convex surface pad 3, the distribution spool 4 that drive right side are moved to the left together with the second counteraction plunger 8, compression retracteding position spring 7, the oil groove opposite position that now distributes spool 4 and selector valve body 6 changes during for state of equilibrium, and consequent interstitial site is by the decision that turns to of bearing circle.Process this gap is by hydraulic coupling oil content dispensing power-assisted oil cylinder oil pocket and power-assisted oil cylinder oil pocket.After distributing spool 4 to be moved to the left, make oil suction chamber 15 with and the gap smaller of the second power-assisted oil cylinder oil pocket 16, it is large that the gap of oil suction chamber 15 and the first power-assisted oil cylinder oil pocket 14 becomes, thereby make the pressure of pressure ratio the second power-assisted oil cylinder oil pocket 16 of the first power-assisted oil cylinder oil pocket 14 little, under this difference of pressure effect, the piston of power-assisted oil cylinder 20 overcomes cornering resistance and moves inward, and automotive wheels is swung and realize motor turning.
4, return state:
Once the steering effort on bearing circle disappears, distribute spool 4 to get back to the position of state of equilibrium.And wheel is got back to the straight-line travelling position under its self-aligning moment loading, meanwhile, wheel drives steering track rod, and spindle arm drives steering arm shaft to drive piston and steering screw 11 actions, drives the position of steering wheel return to straight-line travelling.Now, distribute spool 4, selector valve body 6, the first counteraction plunger 5 and the second counteraction plunger 8, pull back spring 7 still to keep the state of equilibrium invariant position.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. the guiding valve with plunger, comprise selector valve body, the axial centre of described selector valve body is provided with steering screw, one end of described selector valve body is provided with flange, the other end of described selector valve body is provided with end cap, rigidly fix and be connected between described flange and selector valve body, rigidly fix and be connected between described selector valve body and end cap, it is characterized in that, the interior steering screw of described selector valve body (6) (11) periphery is equipped with from the inside to the outside successively distributes spool (4) and counteraction plunger assembly (21), be equipped with thrust baring (1) on the two ends of described steering screw (11), be provided with concave surface pad and convex surface pad between described thrust baring (1) and counteraction plunger assembly (24), described concave surface pad and convex surface pad are in contact with one another, the flat end of described concave surface pad with contact thrust baring and connect, the flat end of described convex surface pad with contact described distribution spool and counteraction plunger assembly and connect.
2. a kind of guiding valve with plunger according to claim 1, it is characterized in that, described antagonistic force plunger assembly comprises the first counteraction plunger, pull back spring, the second counteraction plunger, described pull back spring is between the first counteraction plunger and the second counteraction plunger, and the two ends of described pull back spring connect respectively described the first counteraction plunger and described the second counteraction plunger.
3. a kind of guiding valve with plunger according to claim 1, is characterized in that, is provided with successively the first oil back chamber, the first power-assisted oil cylinder oil pocket, oil suction chamber, the second power-assisted oil cylinder oil pocket and the second oil back chamber on described distribution spool.
4. a kind of guiding valve with plunger according to claim 1, is characterized in that, described end cap is provided with jam nut, described jam nut locking thrust baring, concave surface pad, convex surface pad.
5. a kind of guiding valve with plunger according to claim 1 and 2, is characterized in that, described flange, selector valve body and end cap are fixed by screw rod successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204332670U CN203318498U (en) | 2013-07-19 | 2013-07-19 | Slide valve with plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204332670U CN203318498U (en) | 2013-07-19 | 2013-07-19 | Slide valve with plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203318498U true CN203318498U (en) | 2013-12-04 |
Family
ID=49657871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204332670U Expired - Fee Related CN203318498U (en) | 2013-07-19 | 2013-07-19 | Slide valve with plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203318498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840902A (en) * | 2015-07-30 | 2016-08-10 | 荣成华泰汽车有限公司 | Flow control valve, steering device and car |
-
2013
- 2013-07-19 CN CN2013204332670U patent/CN203318498U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840902A (en) * | 2015-07-30 | 2016-08-10 | 荣成华泰汽车有限公司 | Flow control valve, steering device and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |