CN201677921U - Load sensing priority steering control integrated type full hydraulic steering gear - Google Patents
Load sensing priority steering control integrated type full hydraulic steering gear Download PDFInfo
- Publication number
- CN201677921U CN201677921U CN2010201971005U CN201020197100U CN201677921U CN 201677921 U CN201677921 U CN 201677921U CN 2010201971005 U CN2010201971005 U CN 2010201971005U CN 201020197100 U CN201020197100 U CN 201020197100U CN 201677921 U CN201677921 U CN 201677921U
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- steering gear
- hydraulic steering
- valve body
- load sensing
- hole
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Abstract
The utility model provides a load sensing priority steering control integrated type full hydraulic steering gear which comprises a valve body, a valve core and valve sleeve assembly, a rotor and stator meshing pair, a linkage shaft and a rear cover, wherein the valve body is provided with a runner communicated with a liquid inlet and a liquid outlet; the valve core and valve sleeve assembly comprises a valve core and a valve sleeve which can rotate together to achieve the conversion of the runner of the valve body; the rotor and stator meshing pair comprises a rotor and a stator which are meshed with each other through a gear structure; the linkage shaft is connected with the valve core, the valve sleeve and the rotor; and the rear cover is connected with the valve body which is internally provided with a group of additional runners formed by communicating E return chutes with E holes of an internal cavity of the valve body. The integrated type full hydraulic steering gear has the main benefits as follows: the redesign of runner structure inside the steering gear ensures that oil is preferably supplied for a steering system, and surplus oil can flow into other working systems for work simultaneously; and the integrated type full hydraulic steering gear obviously improves efficiency, saves energy, and also has the advantages of simple structure and convenient manufacturing.
Description
Technical field
The utility model relates to a kind of all-hydraulic steering gear, and the flow passage structure of the energy-saving float amount of especially a kind of load sensing all-hydraulic steering gear belongs to hydraulic transmission technology field.
Background technology
All-hydraulic steering gear is a hydraulic actuator commonly used of realizing that mechanical energy can be changed to hydraulic pressure.Its core component comprises changes stator Meshing Pair and rotary valve flow distributing mechanism, changes the calculating that the stator Meshing Pair is used to realize hydraulic flow, and the effect of rotary valve is a control liquid flow path direction.Representative type deflector structure comprises valve body, valve body is by captiveing joint with stator and bonnet every dish, wherein be shaped on the runner that is communicated with inlet and liquid outlet, one section of valve body is supported with and extends to exterior spool, the inner of spool universal driving shaft one end interior with being placed in valve body is connected, universal driving shaft is connected with the valve pocket that is installed in the rotatable switching runner in the valve body, the other end of universal driving shaft passes every dish, by spline tooth wheel set and rotor inner hole engagement, the excircle of rotor is shaped on tooth, with the tooth formation pitch wheel pair of circle in the stator.
During work, the rotation of spool can drive valve pocket rotation by universal driving shaft, thereby realizes the runner conversion in the valve body, makes feed liquor pass through the cavity volume output of gear pair, realizes flow output control, rides over aspect such as Vehicular turn and has obtained using widely.
Yet, at present at home in, the all-hydraulic steering gear that uses in the low power walking machine, the situation of ubiquity steering swivel system loss of flow.This wherein, the direct oil return of all-hydraulic steering gear surplus hydraulic oil is the principal element that causes flow system flow loss.Usually adopt the method for external pressure-gradient control valve preferentially to guarantee the required flow of deflector in the prior art, but pressure-gradient control valve can only with the supporting use of load sensing type hydraulic steering gear, and increased the purchase cost of main frame side.
The utility model content
The purpose of this utility model is: at the serious problem of loss of flow that above-mentioned prior art exists, provide a kind of and be used for, the load sensing of miniwatt walking machine preferentially turns to control sets moulding all-hydraulic steering gear.
In order to achieve the above object, the utility model provides a kind of all-hydraulic steering gear, comprising: valve body is shaped on the runner that is communicated with inlet and liquid outlet on the described valve body; Spool valve pocket assembly comprises and can rotate together to realize the spool and the valve pocket of valve flowing channel conversion; Change the stator Meshing Pair, comprise by gear structure ingear rotor and stator; Universal driving shaft connects spool, valve pocket and rotor; Bonnet connects valve body, is provided with one group of additional runner in the described valve body, and described additional runner is connected by the E back leakage groove of body cavity and E hole and forms.
Further, the bottom of described valve body is furnished with P, T, A, B four holes, and is provided with screw thread.
Further, described E hole is distributed in the bottom of valve body, and is provided with screw thread.
Further, the cross section of E back leakage groove is perpendicular to the trend in E hole.
Further, the bottom land of described E back leakage groove is drilled with the hole that is used for the perforation in E hole.
Further, the bottom land of described E back leakage groove is provided with the deep-slotted chip breaker with the perforation in E hole.
Further, described E hole connects other work systems.
Further, described all-hydraulic steering gear connects the bearing circle of traveling gear, and the aperture in described E hole and the rotating speed of described bearing circle are inversely proportional to.
Further, when all-hydraulic steering gear was in meta, E hole standard-sized sheet, hydraulic oil passed through the E orifice flow to other work systems.
Further, described commentaries on classics stator Meshing Pair is four or five tooth float amount hydrostatic drive gauging devices.
The beneficial effects of the utility model are mainly reflected in: by the redesign to deflector inner flow passage structure, guarantee oil mass priority of supply steering swivel system, the fluid of surplus simultaneously can flow into other work system work; Significantly improve efficient, saved the energy, also had advantage simple in structure, that be convenient to make.
Description of drawings
The utility model is further described below in conjunction with accompanying drawing.
Fig. 1 is the schematic diagram of specific embodiment of the utility model;
Fig. 2 is the valve body section-drawing of specific embodiment of the utility model;
Fig. 3 is the valve body right elevation of specific embodiment of the utility model;
Fig. 4 is the E hole part sectional view of specific embodiment of the utility model;
Fig. 5 is the general assembly drawing of specific embodiment of the utility model.
The specific embodiment
Fig. 1 is the schematic diagram of specific embodiment of the utility model.
As Fig. 2, Fig. 3, Fig. 4, load sensing of the present utility model preferentially turn to control sets moulding all-hydraulic steering gear to be made of parts such as valve body 1, spool valve pocket assembly 4, commentaries on classics stator Meshing Pair 5, universal driving shaft 6, bonnets 7.
As Fig. 5, valve body 1 is captiveed joint with the stator and the bonnet 7 that change stator Meshing Pair 5, wherein be shaped on the runner that is communicated with inlet and liquid outlet, the spool that is supported with spool valve pocket assembly 4 of valve body 1, spool extends to the outside, the inner of spool is connected with a end of universal driving shaft 6 in being placed in valve body 1, universal driving shaft 6 is connected with the valve pocket of the spool valve pocket assembly 4 that is installed in the rotatable switching runner in the valve body 1, the other end of universal driving shaft 6 and rotor inner hole engagement, the excircle of rotor is shaped on tooth, be meshing with each other to constitute commentaries on classics stator Meshing Pair 5 with the tooth of circle in the stator, changeing stator Meshing Pair 5 is four or five tooth float amount hydrostatic drive gauging devices, and being specially rotor is four teeth, stator is the curtate cyclod Meshing Pair structure of five teeth.
During work, the rotation of spool can drive the valve pocket rotation by universal driving shaft 6, thereby realizes the runner conversion in the valve body 1, and its specific implementation is known by those skilled in the art, does not repeat them here.
Existing valve body has P, T, A, B four holes that are distributed in the valve body bottom usually, and the existing valve body of valve body 1 internal ratio of present embodiment is opened one group of runner more, and described runner is connected by the E back leakage groove 2 of valve body 1 inner chamber and E hole 3 and forms.
Described E hole 3 is distributed in the valve body bottom equally, and has attacked screw thread; The cross section of E back leakage groove 2 is perpendicular to the trend in E hole 3.By the bottom land boring at E back leakage groove 2, the perforation in realization and E hole 3; Also can realize perforation by the mode of reprocessing a deep-slotted chip breaker at the bottom land of E back leakage groove 2 with E hole 3; Other work systems are received in E hole 3.
Behind host-initiated, when deflector is in meta, E hole 3 standard-sized sheets, hydraulic oil flows to other work systems by E hole 3; When steering wheel rotation, the aperture in E hole 3 and the rotating speed of bearing circle are inversely proportional to.When bearing circle change fast, E hole 3 openings are little; It is slow that bearing circle changes, and E hole 3 openings are big.Like this, can guarantee oil mass priority of supply steering swivel system, simultaneously, surplus fluid can flow into other work system work.
When running into big turning situation, when bearing circle is got to terminal point, E hole 3 full cut-offs.At this moment, fluid all flows to steering swivel system.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (9)
1. a load sensing preferentially turns to control sets moulding all-hydraulic steering gear, comprising:
Valve body is shaped on the runner that is communicated with inlet and liquid outlet on the described valve body;
Spool valve pocket assembly comprises and can rotate together to realize the spool and the valve pocket of valve flowing channel conversion;
Change the stator Meshing Pair, comprise by gear structure ingear rotor and stator;
Universal driving shaft connects spool, valve pocket and rotor;
Bonnet connects valve body, it is characterized in that: be provided with one group of additional runner in the described valve body, described additional runner is connected by the E back leakage groove of body cavity and E hole and forms.
2. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: the bottom of described valve body is furnished with P, T, A, B four holes, and is provided with screw thread.
2. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: described E hole is distributed in the bottom of valve body, and is provided with screw thread.
3. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: the cross section of E back leakage groove is perpendicular to the trend in E hole.
4. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: the bottom land of described E back leakage groove is drilled with the hole that is used for the perforation in E hole.
5. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: the bottom land of described E back leakage groove is provided with the deep-slotted chip breaker with the perforation in E hole.
6. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: described E hole connects other work systems.
7. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: described all-hydraulic steering gear connects the bearing circle of traveling gear, and the aperture in described E hole and the rotating speed of described bearing circle are inversely proportional to.
8. load sensing according to claim 7 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: when all-hydraulic steering gear was in meta, E hole standard-sized sheet, hydraulic oil passed through the E orifice flow to other work systems.
9. load sensing according to claim 1 preferentially turns to control sets moulding all-hydraulic steering gear, it is characterized in that: described commentaries on classics stator Meshing Pair is four or five tooth float amount hydrostatic drive gauging devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201971005U CN201677921U (en) | 2010-05-20 | 2010-05-20 | Load sensing priority steering control integrated type full hydraulic steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201971005U CN201677921U (en) | 2010-05-20 | 2010-05-20 | Load sensing priority steering control integrated type full hydraulic steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201677921U true CN201677921U (en) | 2010-12-22 |
Family
ID=43342976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201971005U Expired - Lifetime CN201677921U (en) | 2010-05-20 | 2010-05-20 | Load sensing priority steering control integrated type full hydraulic steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201677921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104024088A (en) * | 2011-12-27 | 2014-09-03 | 丹佛斯动力系统有限公司 | Hydraulic steering device |
| CN104787111A (en) * | 2015-04-23 | 2015-07-22 | 圣邦集团有限公司 | Control valve for steering system |
-
2010
- 2010-05-20 CN CN2010201971005U patent/CN201677921U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104024088A (en) * | 2011-12-27 | 2014-09-03 | 丹佛斯动力系统有限公司 | Hydraulic steering device |
| CN104787111A (en) * | 2015-04-23 | 2015-07-22 | 圣邦集团有限公司 | Control valve for steering system |
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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: 20101222 |
|
| CX01 | Expiry of patent term |