CN202132293U - M-type function directional valve and engineering machinery - Google Patents

M-type function directional valve and engineering machinery Download PDF

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Publication number
CN202132293U
CN202132293U CN 201120109761 CN201120109761U CN202132293U CN 202132293 U CN202132293 U CN 202132293U CN 201120109761 CN201120109761 CN 201120109761 CN 201120109761 U CN201120109761 U CN 201120109761U CN 202132293 U CN202132293 U CN 202132293U
Authority
CN
China
Prior art keywords
valve
spool
type function
hydraulic fluid
fluid port
Prior art date
Application number
CN 201120109761
Other languages
Chinese (zh)
Inventor
刘永东
黎桑
唐文杰
Original Assignee
三一重工股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201120063142 priority Critical
Priority to CN201120063142.4 priority
Application filed by 三一重工股份有限公司 filed Critical 三一重工股份有限公司
Priority to CN 201120109761 priority patent/CN202132293U/en
Application granted granted Critical
Publication of CN202132293U publication Critical patent/CN202132293U/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0716Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401Valve members; Fluid interconnections therefor
    • F15B13/0402Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves

Abstract

The utility model provides a M-type function directional valve, which comprises a valve core and a valve body. The valve core is arranged inside the cavity of the valve body. The valve body is equipped with a first pressure oil port, a second pressure oil port, a first oil return port, a second oil return port and a third oil return port. The valve core is equipped with an inward concave part and an oil chamber is formed by the valve body together with the inward concave part of the valve core. When the valve core is arranged at a middle position, the second pressure oil port is communicated with the first oil return port. According to the M-type function directional valve, the valve body is equipped with two pressure oil ports and three oil return ports. Therefore, the M-type function can be realized without drilling holes on the valve core. The M-type function directional valve is convenient to machine and the machining cost of the valve is greatly reduced. The strength of the valve core is also greatly improved and the fracture rate of the valve core is lowered at the same time. Therefore, the control reliability of the directional valve is greatly improved. Meanwhile, the problems of the difficult machining of a conventional M-type function directional valve and the easy fracture of the valve core of the valve in the prior art are also solved. The utility model also provides an engineering machine equipped with the M-type function directional valve.

Description

M type function selector valve and engineering machinery

Technical field

The utility model relates to hydraulic transmission and control technique field, relates in particular to the M type function selector valve and the engineering machinery of flow direction in a kind of controlled hydraulic system.

Background technique

The selector valve that is used for flow direction control in the hydraulic system is used very extensively, and its kind is also a lot.By the maneuverability pattern branch have electronic, surge, electricity surges etc., by the structure of valve various ways such as guiding valve, rotary valve is arranged again.The meta function of selector valve is meant when the spool in the selector valve is in neutral position or home position the connection form of each hydraulic fluid port in the valve, has embodied the control function of selector valve.Selector valve can form multiple meta function according to the variation of spool shape and hydraulic fluid port position, and wherein the structure and the function implementation thereof of typical M type function selector valve describe through Fig. 1 in the existing technology.

As shown in Figure 1: selector valve comprises first end cap 1 ', first Returnning spring 2 ', spool 3 ', valve body 4 ', second Returnning spring 5 ' and second end cap 6 '.Wherein, the body interior of spool 3 ' is drilled with oilhole P1 ', P2 ', T1 ', T2 '.When spool 3 ' was in meta, P1 ' communicated with T1 ', and P2 ' communicates with T2 ', had realized that P ' mouth communicates with T ' mouthful, and A ' mouth, B ' mouth and other mouthfuls are not connected, have promptly realized M type meta function.

When from X ' mouthful of introducing pressure oil to the first Returnning spring 2 ' chamber, spool 3 ' moves to the right, and P2 ' mouthful and T1 ' mouthful all is closed; Make P ' mouth and T ' mouth obstructed, at this moment, through the effect of the inner cavity on the spool 3 '; P ' mouth is communicated with A ' mouthful, and B ' mouth communicates with T ' mouthful; When from Y ' mouthful of introducing pressure oil to the second Returnning spring 5 ' chamber, spool 3 ' moves left, and P1 ' mouthful and T2 ' mouthful all is closed; Make P ' mouth and T ' mouth obstructed, at this moment, through the effect of the inner cavity on the spool 3 '; P ' mouth is communicated with B ' mouthful, and A ' mouth communicates with T ' mouthful.

Can find out that from above-mentioned explanation the selector valve of existing technology need be realized M type function through boring in spool, and boring is often very difficult in spool, causes processing technology complicated, cost is high.And, increased the hidden danger of spool fracture in the intensity of the whole spool of spool body interior boring meeting reduction.

In view of this, provide a kind of selector valve that can overcome the existing defective of above-mentioned existing technology to become present technique field institute problem demanding prompt solution.

The model utility content

The purpose of the utility model is to provide a kind of easy to process, spool intensity high, control reliability is high M type function selector valve, to solve the existing aforementioned disadvantages of selector valve of existing technology.

An also purpose of the utility model is to provide a kind of engineering machinery, and the selector valve that is adopted in this project machinery has solved above-mentioned defective of the prior art.

To achieve these goals, according to an aspect of the utility model, a kind of M type function selector valve is provided; Comprise spool and valve body; Spool is arranged in the cavity of valve body, and valve body is provided with the first pressure hydraulic fluid port, the second pressure hydraulic fluid port, first return opening, second return opening, reaches the 3rd return opening, and spool is provided with the inner fovea part that constitutes oil pocket with valve body jointly; When spool was in meta, the second pressure hydraulic fluid port communicated with first return opening.

Further; Above-mentioned inner fovea part is made up of the interior stepped part on the spool; Interior stepped part comprises along spool first end face of spool radial direction and spool second end face; Be provided with in the valve body cavity with corresponding valve body first end face of spool first end face and with corresponding valve body second end face of spool second end face, the spacing between valve body first end face and spool first end face is L1, the spacing between valve body second end face and spool second end face is L2; Wherein, L1, L2 are all less than the working stroke S of spool.

Further, first return opening is positioned on the valve body the not homonymy with the first pressure hydraulic fluid port and the second pressure hydraulic fluid port.

According to the M type function selector valve of the utility model,, make it can obtain M type function, and need on spool, not hole through two pressure hydraulic fluid ports and three return openings are set on valve body.Because need not in the spool to hole, thereby processing is upward very convenient, the intensity of spool also greatly improves, eliminated the hidden danger of spool fracture, the control reliability of selector valve is greatly improved, overcome the defective of the M type function selector valve existence of existing technology.

According to the utility model on the other hand, a kind of engineering machinery is provided also, this project mechanically is provided with according to M type function selector valve recited above.

Except top described purpose, characteristic and advantage, other purpose, characteristic and the advantage that the utlity model has are with combining accompanying drawing to do further detailed explanation.

Description of drawings

Constitute the preferred embodiment that the part of this specification, the accompanying drawing that is used for further understanding the utility model show the utility model, and be used for explaining the principle of the utility model with specification.The illustrative examples and the explanation thereof of the utility model are used for task of explanation, do not constitute the improper qualification to the utility model.In the accompanying drawing:

Fig. 1 is the M type function selector valve structural representation of existing technology;

Fig. 2 is the structural representation according to first embodiment's of the utility model M type function selector valve;

Fig. 2 a is that selector valve is in position, a left side, the schematic representation when left side X mouth leads to pressure oil;

Fig. 2 b is that selector valve is in right position, the schematic representation when right side Y mouth leads to pressure oil; And

Fig. 3 is the structural representation according to second embodiment's of the utility model M type function selector valve.

Embodiment

Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.

Fig. 2 shows the structure according to the utility model first embodiment's M type function selector valve.As shown in Figure 2, this M type function selector valve comprises: first end cap 1, first Returnning spring 2, spool 3, valve body 4, second Returnning spring 5 and second end cap 6.Valve body 4 is provided with two pressure hydraulic fluid ports, i.e. the first pressure hydraulic fluid port P1 and the second pressure hydraulic fluid port P2.Simultaneously, valve body 4 also is provided with three return openings and an A mouth and a B mouth, and three return openings are respectively first oil return inlet T 1, second oil return inlet T 2 and the 3rd oil return inlet T 3.Spool 3 is provided with and the common inner fovea parts that constitute oil pockets of valve body 4, and when spool 3 was in meta, the second pressure hydraulic fluid port P2 communicated with first oil return inlet T 1, does not respectively communicate as the A mouth of actuator port and B mouth and other hydraulic fluid ports, has promptly realized M type meta function.

Fig. 2 a is that selector valve is in position, a left side, the schematic representation when left side X mouth leads to pressure oil.Shown in Fig. 2 a, when introducing pressure oil to the first Returnning spring 2 chambeies from the X mouth, spool 3 moves to the right, and first oil return inlet T 1 is closed, and makes the second pressure hydraulic fluid port P2 and first oil return inlet T 1 obstructed.At this moment, the first pressure hydraulic fluid port P1 communicates with actuator port A, and actuator port B communicates with the 3rd oil return inlet T 3.

Correspondingly, Fig. 2 b shows selector valve and is in right position, the schematic representation during the logical pressure oil of right side Y mouth.Shown in Fig. 2 b, when introducing pressure oil to the second Returnning spring 5 chambeies from the Y mouth, spool 3 moves left, and the second pressure hydraulic fluid port P2 and first oil return inlet T, 1 connected part are closed, and make the second pressure hydraulic fluid port P2 and first oil return inlet T 1 obstructed.At this moment, the second pressure hydraulic fluid port P2 communicates with actuator port B, and actuator port A communicates with second oil return inlet T 2.

Adopt the selector valve of the utility model said structure to realize M type meta function; But need not process oilhole on the spool, make the processing of whole spool more convenient, guarantee more easily on the precision yet through boring; And, obtained higher spool intensity owing to need not boring on the spool.

Preferably, as shown in Figure 2, the oil pocket in the utility model between spool 3 and the valve body 4 constitutes through on spool 3, inner fovea part being set.Express one of them inner fovea part with label 7 among Fig. 2; Also be; Constitute through the interior stepped part on the spool 3 at the oil pocket between the second pressure hydraulic fluid port P2 and first oil return inlet T 1; Should in stepped part comprise along the spool of spool 3 radial direction first end face 31 and spool second end face 32, be provided with in valve body 4 cavitys with spool first end face, 31 corresponding valve body first end faces 41 and with spool second end face 32 corresponding valve body second end faces 42, the spacing between valve body first end face 41 and spool first end face 31 is L1; Spacing between valve body second end face 42 and spool second end face 32 is L2; For satisfying the meta M type function of selector valve, must meet the following conditions: L1 must be less than spool working stroke S, and L2 must be less than spool working stroke S.

Be appreciated that above-mentioned spool first end face 31 and spool second end face 32 be not necessarily with the direction of spool 3 axis normal on, also can be arranged to form an angle with the axis of spool 3.Certainly, this spool first end face or second end face also can be arc surface or other suitable shapes.Likewise, valve body first end face in the utility model and second end face also be not necessarily with the direction of valve body 4 axis normal on, can be arranged to form an angle with the axis of valve body 4.

Fig. 3 shows the M type function selector valve structure according to second embodiment of the utility model.As shown in Figure 3, in this selector valve, be provided with two pressure hydraulic fluid ports on the valve body 4 equally, i.e. the first pressure hydraulic fluid port P1 and the second pressure hydraulic fluid port P2, but the oil pocket position between spool 3 and the valve body 4 changes.In this second embodiment, when spool 3 was in meta, the first pressure hydraulic fluid port P1 communicated with first oil return inlet T 1, rather than the second pressure hydraulic fluid port P2 communicates with first oil return inlet T 1.

Be appreciated that in the M type function selector valve of the utility model, be not limited to the hydraulic fluid port setting type as among Fig. 2, Fig. 3 embodiment.For example, first oil return inlet T 1 both can be the not homonymy that is positioned on the valve body 4 with the first pressure hydraulic fluid port P1 and the second pressure hydraulic fluid port P2, and oil circuit is more smooth and easy under this form, controls effective.First oil return inlet T 1 also can be the same side that is positioned on the valve body 4 with the first pressure hydraulic fluid port P1 and the second pressure hydraulic fluid port P2.

The M type function selector valve of the utility model can apply in all kinds of engineering machinery widely, comprises concreting machinery, road building machine, excavation machinery, Hoisting Machinery, harbour machinery, reaches piling machinery etc.

The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (4)

1. a M type function selector valve comprises spool (3) and valve body (4), and said spool (3) is arranged in the cavity of said valve body (4), it is characterized in that,
Said valve body (4) is provided with the first pressure hydraulic fluid port (P1), the second pressure hydraulic fluid port (P2), first return opening (T1), second return opening (T2), reaches the 3rd return opening (T3); Said spool (3) is provided with the inner fovea part that constitutes oil pocket with said valve body (4) jointly; When said spool (3) when being in meta, the said second pressure hydraulic fluid port (P2) communicates with said first return opening (T1).
2. M type function selector valve according to claim 1 is characterized in that,
Said inner fovea part is made up of the interior stepped part on the spool (3); Stepped part comprises spool first end face (31) and spool second end face (32) along spool (3) radial direction in said; Be provided with in said valve body (4) cavity with corresponding valve body first end face of said spool first end face (31) (41) and with corresponding valve body second end face of said spool second end face (32) (42); Spacing between said valve body first end face (41) and spool first end face (31) is L1; Spacing between said valve body second end face (42) and spool second end face (32) is L2, and wherein, L1, L2 are all less than the working stroke S of said spool (3).
3. M type function selector valve according to claim 1 and 2 is characterized in that, said first return opening (T1) is positioned on the said valve body (4) and the not homonymy of the said first pressure hydraulic fluid port (P1) and the second pressure hydraulic fluid port (P2).
4. engineering machinery; It is characterized in that; Be provided with in the said engineering machinery according to each described M type function selector valve in the claim 1 to 3, wherein said engineering machinery is concreting machinery, road building machine, excavation machinery, Hoisting Machinery, harbour machinery or piling machinery.
CN 201120109761 2011-03-10 2011-04-14 M-type function directional valve and engineering machinery CN202132293U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201120063142 2011-03-10
CN201120063142.4 2011-03-10
CN 201120109761 CN202132293U (en) 2011-03-10 2011-04-14 M-type function directional valve and engineering machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120109761 CN202132293U (en) 2011-03-10 2011-04-14 M-type function directional valve and engineering machinery

Publications (1)

Publication Number Publication Date
CN202132293U true CN202132293U (en) 2012-02-01

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CN 201110093938 CN102116328B (en) 2011-03-10 2011-04-14 M-type function reversing valve
CN 201120109761 CN202132293U (en) 2011-03-10 2011-04-14 M-type function directional valve and engineering machinery

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CN102116328A (en) * 2011-03-10 2011-07-06 三一重工股份有限公司 M-type function reversing valve

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CN107725515A (en) * 2016-08-10 2018-02-23 博世力士乐(常州)有限公司 Hydraulic valve
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CN102116328A (en) * 2011-03-10 2011-07-06 三一重工股份有限公司 M-type function reversing valve

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WO2012119568A1 (en) 2012-09-13
CN102116328B (en) 2012-07-18

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20120201

Effective date of abandoning: 20120718