CN103148037A - High-safety combined oil inlet valve - Google Patents
High-safety combined oil inlet valve Download PDFInfo
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- CN103148037A CN103148037A CN2013100882712A CN201310088271A CN103148037A CN 103148037 A CN103148037 A CN 103148037A CN 2013100882712 A CN2013100882712 A CN 2013100882712A CN 201310088271 A CN201310088271 A CN 201310088271A CN 103148037 A CN103148037 A CN 103148037A
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- Prior art keywords
- valve
- spool
- oil inlet
- fluid port
- hydraulic fluid
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- 239000012530 fluid Substances 0.000 claims description 28
- 239000000446 fuel Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000004080 punching Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Safety Valves (AREA)
- Check Valves (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention relates to a high-safety combined oil inlet valve, which belongs to a hydraulic part for an engineering truck. The high-safety combined oil inlet valve comprises a valve body, a stable flow dividing valve which is installed in the valve body, and a hydraulic system main safety valve. The high-safety combined oil inlet valve is characterized in that a check valve is installed in an oil inlet Z of a steering gear which is connected with the stable flow dividing valve in the valve body; and the check valve is provided with a valve bush which is arranged at the bottom of the oil inlet Z, a spool which is arranged in the inner chamber of the valve bush, a spring which is sheathed on the periphery of the spool and a spring seat which is limited at the head of the spool, wherein the valve bush is connected with a female thread in the inner chamber of the bottom of the oil inlet Z through a male thread on the periphery. According to trial use, when a piston in a steering oil cylinder rapidly moves to an end point to form oil flow backwash, the check valve prevents backflow oil flow from flowing reversely in a leakproof way, the situation that the hand of an operator is beaten because the oil flow backwash drives the steering wheel of the steering gear to rapidly rotate in an opposite direction is eliminated, and the potential safety hazard caused to the operator is eradicated.
Description
Technical field: the invention belongs to the engineering truck hydraulic unit, particularly a kind of high safety performance is combined into fuel tap.
background technique: the multichannel oiling valve that is used for the engineering truck hydraulic system of prior art, also claim multi-way valve oil-feed sheet, as shown in Figure 2, comprise valve body 01, be installed on the stable shunt valve 02 in valve body, the total safety valve 03 of hydraulic system, wherein stable shunt valve includes spool 021, be positioned at the throttling element 022 of valve core cavity, apical grafting is in the valve spring 023 of throttling element, be positioned at the spool rearward end, valve spring is played the valve spring cup 024 of position-limiting action, be positioned at the spacing plug screw 025 of spool front end, the spool front portion is designed with the stable shunt valve oiler 026 of the total oil inlet P that communicates in valve body, the work system of configuration relative to this oiler is divided hydraulic fluid port 027, the spool rear design has the stable shunt valve steering system of all hydraulic pressure steering-gear filler opening Z that communicates in valve body to divide hydraulic fluid port 028 and is connected in stable shunt valve safety valve 029 on this hydraulic fluid port.prior art multichannel oiling valve shown in Figure 2 in use, when the piston in the steering cylinder of all hydraulic pressure steering-gear moves quickly into end points, produce the pressure bounce-back in the short time, this pressure bounce-back forms along all hydraulic pressure steering-gear filler opening Z---stable shunt valve divides hydraulic fluid port 028---reverse oil flow of stable shunt valve oiler 026, driving the commutator steering wheel rotates round about rapidly, cause gently " hired roughneck " phenomenon to operator, heavy what for to damaging, therefore, this multichannel oiling valve of prior art in use can bring potential safety hazard to operator.
This shows, study and design a kind of mounting type, oil circuit trend not affecting existing multichannel oiling valve for the engineering truck hydraulic system, under the prerequisite of structure and specification, it is necessary having eliminated and having brought high safety performance multichannel oiling valve potential safety hazard, that improved to operator.
Summary of the invention: the objective of the invention is to overcome the deficiencies in the prior art, study and design a kind of mounting type, oil circuit trend that does not affect existing multichannel oiling valve for the engineering truck hydraulic system, under the prerequisite of structure and specification, eliminated to operator and brought the high safety performance of potential safety hazard to be combined into fuel tap.
The present invention seeks to be achieved through the following technical solutions:
A kind of high safety performance is combined into fuel tap, comprises valve body, is installed on the total safety valve of stable shunt valve, hydraulic system in valve body, it is characterized in that in valve body stable shunt valve connects in the Z hydraulic fluid port of commutator safety check is installed.
The object of the invention can also realize by following further technical measures:
Described check valve design has: the valve pocket that is positioned at Z hydraulic fluid port bottom, the female connection that described valve pocket is provided with through the outside thread of periphery and Z hydraulic fluid port bottom inner chamber, be positioned at the spool of valve pocket inner chamber, be socketed on the spring of spool periphery, be limited in the spring seat of spool head, described spring is limited in the spool head through spring seat.
In the described spring seat that is limited in the spool head, the spacing preiection that the head design of spool has the spool end to form through technique for riveting, this spacing preiection is implemented spacing to the spring seat of spool head.The technique effect of this design is: the spacing preiection that forms of technique for riveting is to spring seat easily, and then spring played the position-limiting action that meets technological requirement; And the spacing preiection that compact structure can not come off has been guaranteed resetting flexibly of spring.
The afterbody of described spool is designed with the round table-like non-return lid of the taper with chamfering, and the end face that described valve pocket is abutted against the non-return lid is designed with the ring-type interface with chamfering, and the chamfering of non-return lid is less than the chamfering of ring-type interface.The technique effect of this design is: in use, piston in the steering cylinder of all hydraulic pressure steering-gear moves quickly into end points, the pressure bounce-back that forms in the short time forces oil to flow back to when rushing, chamfering covers the ring-type interface fast less than be subject to the backwashing impact of oil stream of the non-return of ring-type interface chamfering lid, without the reverse flow of leaking ground resistance non-return punching oil stream; In contrast, this shape and structure has but reduced the resistance of the oil stream of forward flow.
The end face that described valve pocket is abutted against non-return lid also is designed with the notch of at least 2 balanced configurations that connect between internal thread be used to the outside thread that screws or unscrew valve pocket inner chamber bottom the Z hydraulic fluid port.The technique effect of this design is: be convenient to safety check is arranged on Z hydraulic fluid port when bottom in valve body, tool using utilizes the notch of balanced configuration to rotate valve pocket, so that the valve pocket periphery outside thread female connection that inner chamber is provided with bottom the Z hydraulic fluid port together.
A kind of high safety performance that the invention process obtains is combined into fuel tap, has compared with prior art shown following beneficial effect:
1, eliminated the potential safety hazard of bringing to operator.when moving quickly into end points, the piston in the steering cylinder of all hydraulic pressure steering-gear forms the pressure bounce-back in the short time, force oil to flow back to when rushing, in safety check, chamfering covers the ring-type interface fast less than be subject to the backwashing impact of oil stream of the non-return of ring-type interface chamfering lid, without the reverse flow of leaking ground resistance non-return punching oil stream, eliminate thus the oil that causes because of pressure bounce-back and flowed back to punching, just can not occur as the not improved multichannel oiling valve of prior art yet, driving the commutator steering wheel rotates round about rapidly, cause " hired roughneck " phenomenon to operator, thereby eradicated the potential safety hazard of bringing to operator.
2, do not affect mounting type, the oil circuit trend of existing multichannel oiling valve for the engineering truck hydraulic system, structure and specification.In technological scheme of the present invention, utilize dexterously the interior casting of the valve body runner of the multichannel oiling valve of prior art to deepen Z hydraulic fluid port reach, not affecting primary tube connects with the installation of oil pipe and is connected, just stable shunt valve connects to have installed in the Z hydraulic fluid port of commutator and stops oil to flow back to the safety check of punching in valve body, do not change mounting type, the oil circuit trend of whole engineering truck hydraulic system, structure and specification yet.
Description of drawings: Fig. 1 is the schematic diagram that meets thematic structure of the present invention; Fig. 2 is the multichannel oiling valve structural representation that is used for the engineering truck hydraulic system of prior art; Fig. 3 is the check valve structure schematic diagram in Fig. 1; Fig. 4 is the check valve spool schematic diagram in Fig. 3; Fig. 5 is the safety check valve pocket schematic diagram in Fig. 3; Fig. 6 is that safety check valve pocket A in Fig. 5 is to schematic diagram.
Embodiment: implementation detail of the present invention is described as follows below in conjunction with accompanying drawing:
As shown in Fig. 1,3, a kind of high safety performance is combined into fuel tap, comprises valve body 1, is installed on the total safety valve 3 of stable shunt valve 2, hydraulic system in valve body, it is characterized in that in valve body stable shunt valve connects in the Z hydraulic fluid port 4 of commutator safety check 5 is installed.
As shown in Fig. 1,3, described safety check 5 is designed with: the valve pocket 51 that is positioned at Z hydraulic fluid port 4 bottoms, the female connection that described valve pocket is provided with through the outside thread of periphery and Z hydraulic fluid port bottom inner chamber, be positioned at the spool 52 of valve pocket inner chamber, be socketed on the spring 53 of spool periphery, be limited in the spring seat 54 of spool head, described spring is limited in the spool head through spring seat.
As shown in Fig. 3,4, in the described spring seat 54 that is limited in spool 52 heads, the spacing preiection 521 that the head design of spool has the spool end to form through technique for riveting, this spacing preiection is implemented spacing to the spring seat of spool head.
As shown in Fig. 3,4,5, the afterbody of described spool 52 is designed with the round table-like non-return lid 522 of the taper with chamfering 5221, the end face that described valve pocket 51 is abutted against the non-return lid is designed with the ring-type interface 511 with chamfering 5111, and the chamfering 5221 of non-return lid is less than the chamfering 5111 of ring-type interface.In concrete enforcement, select 40 ° as the chamfering of non-return lid, the chamfering of ring-type interface is selected 45 °.
As shown in Fig. 5,6, the end face that described valve pocket 51 is abutted against non-return lid also is designed with the notch 512 of at least 2 balanced configurations that connect between internal thread be used to the outside thread that screws or unscrew valve pocket inner chamber bottom the Z hydraulic fluid port.In concrete enforcement, the notch number of balanced configuration can be selected 4 as shown in Figure 5.
as shown in Figure 1, comprise valve body 1, be installed on the stable shunt valve 2 in valve body, the total safety valve 3 of hydraulic system, wherein stable shunt valve includes spool 21, be positioned at the throttling element 22 of valve core cavity, apical grafting is in the valve spring 23 of throttling element, be positioned at the spool rearward end, valve spring is played the valve spring cup 24 of position-limiting action, be positioned at the spacing plug screw 25 of spool front end, the spool front portion is designed with the stable shunt valve oiler 26 of the total oil inlet P that communicates in valve body, the work system of configuration relative to this oiler is divided hydraulic fluid port 27, the spool rear design has the stable shunt valve steering system of all hydraulic pressure steering-gear filler opening Z that communicates in valve body to divide hydraulic fluid port 28 and is connected in stable shunt valve safety valve 29 on this hydraulic fluid port.In use, when moving quickly into end points, the steering cylinder of all hydraulic pressure steering-gear forms the pressure bounce-back in the short time, this pressure bounce-back is subject to being installed on the stopping of safety check 5 of this hydraulic fluid port bottom on the one hand after entering hydraulic fluid port Z, and the reverse oil flow that stable shunt valve divides hydraulic fluid port 28 can not occur entering; Be actually the structure of one-way conduction due to the structure of safety check 5, can not cause normal oil stream to divide hydraulic fluid port 28, the hydraulic fluid port Z fuel feeding to the all-hydraulic steering gear of steering system from flow through stable shunt valve oiler 26, stable shunt valve of total oil inlet P.
Claims (5)
1. a high safety performance is combined into fuel tap, comprise valve body (1), be installed on stable shunt valve (2), the total safety valve of hydraulic system (3) in valve body, it is characterized in that in valve body stable shunt valve connects in the Z hydraulic fluid port (4) of commutator safety check (5) is installed.
2. high safety performance according to claim 1 is combined into fuel tap, it is characterized in that described safety check (5) is designed with: the valve pocket (51) that is positioned at Z hydraulic fluid port (4) bottom, the female connection that described valve pocket is provided with through the outside thread of periphery and Z hydraulic fluid port bottom inner chamber, be positioned at the spool (52) of valve pocket inner chamber, be socketed on the spring (53) of spool periphery, be limited in the spring seat (54) of spool head, described spring is limited in the spool head through spring seat.
3. high safety performance according to claim 2 is combined into fuel tap, it is characterized in that in the described spring seat (54) that is limited in spool (52) head, the spacing preiection (521) that the head design of spool has the spool end to form through technique for riveting, this spacing preiection is implemented spacing to the spring seat of spool head.
4. high safety performance according to claim 2 is combined into fuel tap, the afterbody that it is characterized in that described spool (52) is designed with the have chamfering round table-like non-return lid of taper (522) of (5221), the end face that described valve pocket (51) is abutted against non-return lid is designed with the have chamfering ring-type interface (511) of (5111), and the chamfering (5221) of non-return lid is less than the chamfering (5111) of ring-type interface.
5. high safety performance according to claim 1 and 2 is combined into fuel tap, it is characterized in that end face that described valve pocket (51) is abutted against non-return lid also is designed with the notch (512) of at least 2 balanced configurations that connect between internal thread be used to the outside thread that screws or unscrew valve pocket inner chamber bottom the Z hydraulic fluid port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100882712A CN103148037A (en) | 2013-03-20 | 2013-03-20 | High-safety combined oil inlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100882712A CN103148037A (en) | 2013-03-20 | 2013-03-20 | High-safety combined oil inlet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103148037A true CN103148037A (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100882712A Pending CN103148037A (en) | 2013-03-20 | 2013-03-20 | High-safety combined oil inlet valve |
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| CN (1) | CN103148037A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058207A (en) * | 2018-10-17 | 2018-12-21 | 唐万刚 | A kind of compact-sized inlet valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4773216A (en) * | 1985-01-22 | 1988-09-27 | Kanzaki Kokykoki Mfg. Co. Ltd. | Flow divider valve for hydraulic system in working vehicles |
| CN2217702Y (en) * | 1995-01-06 | 1996-01-17 | 浙江省临海液压件厂 | Multi-way change valve for direction-changing flow-dividing flow-variation system |
| CN1216090A (en) * | 1997-01-21 | 1999-05-05 | 日立建机株式会社 | Directional control valve with flow dividing valve |
| CN1239758A (en) * | 1998-06-22 | 1999-12-29 | 株式会社岛津制作所 | Priority flow divider |
| JP2003202003A (en) * | 2002-10-25 | 2003-07-18 | Nabco Ltd | Change-over valve having regeneration function for arm |
| CN2767729Y (en) * | 2005-02-23 | 2006-03-29 | 锦州市青山液压件制造有限责任公司 | Multi-way reversing valve with diverter |
| CN202132299U (en) * | 2011-07-05 | 2012-02-01 | 上海强田流体技术有限公司 | Oil compensating valve for proportional multitandem valve |
| CN203239663U (en) * | 2013-03-20 | 2013-10-16 | 镇江华瑞液压机械有限公司 | High-safety-performance combined oil filling valve |
-
2013
- 2013-03-20 CN CN2013100882712A patent/CN103148037A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4773216A (en) * | 1985-01-22 | 1988-09-27 | Kanzaki Kokykoki Mfg. Co. Ltd. | Flow divider valve for hydraulic system in working vehicles |
| CN2217702Y (en) * | 1995-01-06 | 1996-01-17 | 浙江省临海液压件厂 | Multi-way change valve for direction-changing flow-dividing flow-variation system |
| CN1216090A (en) * | 1997-01-21 | 1999-05-05 | 日立建机株式会社 | Directional control valve with flow dividing valve |
| CN1239758A (en) * | 1998-06-22 | 1999-12-29 | 株式会社岛津制作所 | Priority flow divider |
| JP2003202003A (en) * | 2002-10-25 | 2003-07-18 | Nabco Ltd | Change-over valve having regeneration function for arm |
| CN2767729Y (en) * | 2005-02-23 | 2006-03-29 | 锦州市青山液压件制造有限责任公司 | Multi-way reversing valve with diverter |
| CN202132299U (en) * | 2011-07-05 | 2012-02-01 | 上海强田流体技术有限公司 | Oil compensating valve for proportional multitandem valve |
| CN203239663U (en) * | 2013-03-20 | 2013-10-16 | 镇江华瑞液压机械有限公司 | High-safety-performance combined oil filling valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058207A (en) * | 2018-10-17 | 2018-12-21 | 唐万刚 | A kind of compact-sized inlet valve |
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Application publication date: 20130612 |