CN205117866U - Load sensing full hydraulic steering of high meso position pressure - Google Patents
Load sensing full hydraulic steering of high meso position pressure Download PDFInfo
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- CN205117866U CN205117866U CN201520875587.0U CN201520875587U CN205117866U CN 205117866 U CN205117866 U CN 205117866U CN 201520875587 U CN201520875587 U CN 201520875587U CN 205117866 U CN205117866 U CN 205117866U
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Abstract
The utility model discloses a load sensing full hydraulic steering of high meso position pressure, a serial communication port, load sensing full hydraulic steering of high meso position pressure contain a casing, the inner wall of casing on be equipped with a pump and advance oil ring groove, one turn right to advancing oil ring groove, one turning left to advancing oil ring groove and an oil ring groove, the inside of casing be equipped with a valve barrel and a case, the case rotationally set up the valve barrel in. The utility model discloses a load sensing full hydraulic steering of high meso position pressure has following advantage: owing to set up many places pressure balance structure on the case valve barrel, the effectual structural distortion who has reduced because of the vice inside and outside pressure differential of valve barrel produces to improved the allowable pressure of steering gear when the meso position, the also effectual emergence that reduces terminal point return difficulty phenomenon simultaneously, simple structure, the effect is obvious, and the practicality is strong.
Description
Technical field
The utility model relates to a kind of steering apparatus, or rather, is a kind of load sensing all-hydraulic steering gear of high meta pressure.
Background technique
All-hydraulic steering gear is a kind of common steering control apparatus, is widely used on farm machinery and industrial vehicle.The all-hydraulic steering gear of load sensing type relies on its compact structure, and the advantages such as power demand is little are used widely at increasing agricultural vehicle and engineering machinery vehicle.But owing to adopting many working oil path to share same oil hydraulic pump in the hydraulic system of vehicle, which results in when bypass is at high-pressure work, commutator filler opening can bear higher meta pressure.Clamping stagnation or hard steering phenomenon is turned to when what now to start that to produce because of the distortion of spool valve pocket high pressure very easily appear in steering wheel.Equally, when steering wheel forward to turn to terminal time, because steered wheel rotation is obstructed, now steering system working pressure reaches system maximum pressure, spool valve pocket because of high pressure distortion can cause steering wheel return difficulty.
Model utility content
The utility model mainly solves the technical problem existing for prior art, thus provides a kind of load sensing all-hydraulic steering gear of high meta pressure.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of load sensing all-hydraulic steering gear of high meta pressure, it is characterized in that, the load sensing all-hydraulic steering gear of described high meta pressure comprises a housing, the inwall of described housing is provided with a pump oil-feed annular groove, one right steering oil-feed annular groove, one left steering oil-feed annular groove and an oil return annular groove, the inside of described housing is provided with a valve pocket and a spool, described spool is arranged in described valve pocket rotationally, the piezometer ring groove of an annular is provided with in the middle part of the outer side wall of described valve pocket, the circumference of described piezometer ring groove is at least provided with a balancing orifice, the outer side wall afterbody of described valve pocket is provided with the flow control annular groove of an annular, the circumference of described flow control annular groove is provided with a flow control hole array be made up of flow control hole, the outer side wall afterbody of described valve pocket is provided with one by all pressures deep gouge array of all pressing deep gouge to form, described all pressures deep gouge is respectively equipped with a deep gouge circular hole, the outer side wall of described spool is provided with the rotor oil-feed tank array that a spool turning to oil-feed tank to form by spool turns to oil-feed tank array and to be made up of rotor oil-feed tank, the outer side wall afterbody of described spool is provided with a load sensing oil-return groove array be made up of load sensing oil-return groove, the both sides of described rotor oil-feed tank are respectively equipped with one first relief groove, one second relief groove is respectively equipped with between described load sensing oil-return groove, described balancing orifice turns to oil-feed tank to match with described spool, described flow control hole matches with the first described relief groove, described deep gouge circular hole matches with the second described relief groove.
The load sensing all-hydraulic steering gear of high meta pressure of the present utility model has the following advantages: owing to being provided with many places pressure balancing structure on spool valve pocket, effectively reduce the malformation because the secondary external and internal pressure difference of valve pocket produces, thus improve the allowable pressure of commutator when meta, also effectively decrease the generation of terminal return difficulty phenomenon simultaneously, structure is simple, successful, practical.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the perspective view of the load sensing all-hydraulic steering gear of high meta pressure of the present utility model;
Fig. 2 is the cross-sectional structure schematic diagram of the load sensing all-hydraulic steering gear of high meta pressure in Fig. 1;
Fig. 3 is the details enlarged diagram of the a-quadrant of the load sensing all-hydraulic steering gear of high meta pressure in Fig. 2;
Fig. 4 is the stereochemical structure decomposing schematic representation of the load sensing all-hydraulic steering gear of high meta pressure in Fig. 2, and what now show is sectional structure;
Fig. 5 is the details enlarged diagram in the B region of the load sensing all-hydraulic steering gear of high meta pressure in Fig. 4;
Fig. 6 is the details enlarged diagram in the C region of the load sensing all-hydraulic steering gear of high meta pressure in Fig. 4;
Fig. 7 is the perspective view of the valve pocket of the load sensing all-hydraulic steering gear of high meta pressure in Fig. 2;
Fig. 8 is the details enlarged diagram in the D region of valve pocket in Fig. 2;
Fig. 9 is the details enlarged diagram in the E region of valve pocket in Fig. 7;
Figure 10 is the perspective view of the spool of the load sensing all-hydraulic steering gear of high meta pressure in Fig. 2;
Figure 11 is the details enlarged diagram in the F region of spool in Figure 10;
Wherein,
1, the load sensing all-hydraulic steering gear of high meta pressure; 2, housing; 21, pump oil-feed annular groove; 22, right steering oil-feed annular groove; 23, left steering oil-feed annular groove; 24, oil return annular groove; 3, valve pocket; 30, piezometer ring groove; 301, balancing orifice; 31, flow control annular groove; 32, flow control hole; 33, all deep gouge is pressed; 34, deep gouge circular hole; 4, spool; 41, spool turns to oil-feed tank; 42, rotor oil-feed tank; 43, load sensing oil-return groove; 44, the first relief groove; 45, the second relief groove.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
As shown in Figure 1 to 11, the load sensing all-hydraulic steering gear 1 of this high meta pressure comprises a housing 2, the inwall of this housing 2 is provided with a pump oil-feed annular groove 21, one right steering oil-feed annular groove 22, one left steering oil-feed annular groove 23 and an oil return annular groove 24, the inside of this housing 2 is provided with valve pocket 3 and a spool 4, this spool 4 is arranged in this valve pocket 3 rotationally, the piezometer ring groove 30 of an annular is provided with in the middle part of the outer side wall of this valve pocket 3, the circumference of this piezometer ring groove 30 is at least provided with a balancing orifice 301, the outer side wall afterbody of this valve pocket 3 is provided with the flow control annular groove 31 of an annular, the circumference of this flow control annular groove 31 is provided with a flow control hole array be made up of flow control hole 32, the outer side wall afterbody of this valve pocket 3 is provided with one by all pressures deep gouge array of all pressing deep gouge 33 to form, this is all pressed on deep gouge 33 and is respectively equipped with a deep gouge circular hole 34, the outer side wall of this spool 4 is provided with the rotor oil-feed tank array that a spool turning to oil-feed tank 41 to form by spool turns to oil-feed tank array and to be made up of rotor oil-feed tank 42, the outer side wall afterbody of this spool 4 is provided with a load sensing oil-return groove array be made up of load sensing oil-return groove 43, the both sides of this rotor oil-feed tank 42 are respectively equipped with one first relief groove 44, one second relief groove 45 is respectively equipped with between this load sensing oil-return groove 43, this balancing orifice 301 and this spool turn to oil-feed tank 41 to match, this flow control hole 32 matches with this first relief groove 44, this deep gouge circular hole 34 matches with this second relief groove 45.
During use, as shown in Figures 2 and 3, hydraulic oil enters into flow control annular groove 31 from pump oil-feed annular groove 21, and hydraulic oil is now divided into two-way.For the first via, hydraulic oil enters into the first relief groove 44 of spool 4 from flow control hole 32.For the second tunnel, hydraulic oil is from second relief groove 45 of all pressing the deep gouge circular hole 34 of deep gouge 33 to enter into spool 4.Due to the effect of the first relief groove 44 and the second relief groove 45, the limited pressure balanced between spool valve pocket, solve produce because of the distortion of spool valve pocket high pressure turn to clamping stagnation or hard steering phenomenon.
In addition, hydraulic oil enters into spool by the balancing orifice 301 in piezometer ring groove 30 and turns to oil-feed tank 41.The pressure between spool valve pocket is made further to be balanced like this.
Owing to being provided with many places pressure balancing structure on spool valve pocket, effectively reduce the malformation because the secondary external and internal pressure difference of valve pocket produces, thus improve the allowable pressure of commutator when meta, also effectively decrease the generation of terminal return difficulty phenomenon simultaneously, structure is simple, successful, practical.
Be not limited to this, any change of expecting without creative work or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (1)
1. the load sensing all-hydraulic steering gear of one kind high meta pressure, it is characterized in that, the load sensing all-hydraulic steering gear (1) of described high meta pressure comprises a housing (2), the inwall of described housing (2) is provided with a pump oil-feed annular groove (21), one right steering oil-feed annular groove (22), one left steering oil-feed annular groove (23) and an oil return annular groove (24), the inside of described housing (2) is provided with a valve pocket (3) and a spool (4), described spool (4) is arranged in described valve pocket (3) rotationally, the piezometer ring groove (30) of an annular is provided with in the middle part of the outer side wall of described valve pocket (3), the circumference of described piezometer ring groove (30) is at least provided with a balancing orifice (301), the outer side wall afterbody of described valve pocket (3) is provided with the flow control annular groove (31) of an annular, the circumference of described flow control annular groove (31) is provided with a flow control hole array be made up of flow control hole (32), the outer side wall afterbody of described valve pocket (3) is provided with one by all pressures deep gouge array of all pressing deep gouge (33) to form, described all pressures deep gouge (33) is respectively equipped with a deep gouge circular hole (34), the outer side wall of described spool (4) is provided with the rotor oil-feed tank array that a spool turning to oil-feed tank (41) to form by spool turns to oil-feed tank array and to be made up of rotor oil-feed tank (42), the outer side wall afterbody of described spool (4) is provided with a load sensing oil-return groove array be made up of load sensing oil-return groove (43), the both sides of described rotor oil-feed tank (42) are respectively equipped with one first relief groove (44), one second relief groove (45) is respectively equipped with between described load sensing oil-return groove (43), described balancing orifice (301) and described spool turn to oil-feed tank (41) to match, described flow control hole (32) matches with described the first relief groove (44), described deep gouge circular hole (34) matches with described the second relief groove (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520875587.0U CN205117866U (en) | 2015-11-05 | 2015-11-05 | Load sensing full hydraulic steering of high meso position pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520875587.0U CN205117866U (en) | 2015-11-05 | 2015-11-05 | Load sensing full hydraulic steering of high meso position pressure |
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| Publication Number | Publication Date |
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| CN205117866U true CN205117866U (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520875587.0U Active CN205117866U (en) | 2015-11-05 | 2015-11-05 | Load sensing full hydraulic steering of high meso position pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
-
2015
- 2015-11-05 CN CN201520875587.0U patent/CN205117866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
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