CN201615100U - Hydraulic pilot valve - Google Patents
Hydraulic pilot valve Download PDFInfo
- Publication number
- CN201615100U CN201615100U CN200920095094XU CN200920095094U CN201615100U CN 201615100 U CN201615100 U CN 201615100U CN 200920095094X U CN200920095094X U CN 200920095094XU CN 200920095094 U CN200920095094 U CN 200920095094U CN 201615100 U CN201615100 U CN 201615100U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- handle
- pilot valve
- spring
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a hydraulic pilot valve, belongs to a hydraulic valve, and aims to provide a pilot valve with convenient operation and high reliability. The hydraulic pilot valve comprises a valve body, and a handle component which is arranged on the valve body. The handle component consists of a rotating stand column (2), a pressing disc (3), and a handle (1); a valve cavity (12) is arranged inside the valve body (6); a valve spool (9), a spring base (13), a return spring (10), and a pressure adjusting spring (11) are arranged in each valve cavity (12); an oil inlet passage (5), an oil return passage (4), and a working oil port which are communicated with the valve cavity (12) are arranged on the valve body (6); and a sliding rod (14) is inserted on the top end of each valve cavity (12). The utility model realizes that two pressure-reducing valves output pressure oil according to the ratio, also can make the handle stay at any position, has the advantages of labor-saving operation, convenient superposition, convenient extension, and the like, and can be widely applied to various engineering machinery.
Description
Technical field: the utility model relates to a kind of pilot valve, relates in particular to a kind of hydraulic pilot valve that is used for engineering machinery.
Background technique: at present, the hydraulic pilot valve of engineering machinery such as loader, excavator is commonly many bars multidisc structure of bimanualness, has defectives such as labor intensity is big, operating efficiency is low.Publication number is that " CN2454581 ", invention and created name disclose a kind of manual pilot valve that is used for loader or excavator for the utility model patent of " mono-lever control multidisc pilot valve ", though it has overcome the shortcoming of many bars multidisc pilot valve, but its structure more complicated, handle can not stop at an arbitrary position, therefore driver's hand can not break away from handle in operating process, and reliability is relatively poor.
Summary of the invention: at the above-mentioned defective that exists in the prior art, the utility model aims to provide the hydraulic pilot valve of a kind of handiness, good reliability.
To achieve these goals, the utility model is by the following technical solutions: it comprises valve body, is arranged on the handle component on this valve body: described handle component by be fixed on rotation column on the valve body, be fixed on the platen on this rotation column, the handle of fixedlying connected with this platen constitutes; Be provided with two valve pockets in the valve body, be provided with spool, spring seat, Returnning spring and pressure adjusting spring in each valve pocket, valve body is provided with oil input channel, back oil road and two actuator ports, and oil input channel and back oil road are communicated with two valve pockets respectively, and each actuator port is communicated with corresponding valve pocket respectively; Top at each valve pocket is fitted with slide bar.
Handle component is coated by dust-proof cover, and on valve body, handle is connected with the rotation column by hinged cover the rotation column by hinged screw.
Compared with the prior art, the utility model is owing to adopt technique scheme, therefore not only can realize two working cells forming by two reduction valve pressure oil output in proportion, and handle can also rest on desired location exactly, both improve pilot valve accuracy of action and reliability, alleviated the fatigue strength of driver's operation again; In addition, the utility model also has advantages such as being convenient to stack and expansion.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Among the figure: handle 1 rotates column 2 platens 3 back oil roads 4 oil input channels 5 valve bodies 6 return openings 7 actuator ports 8 spools 9 Returnning springs 10 pressure adjusting springs 11 valve pockets 12 spring seats 13 slide bars 14 dust-proof cover 15 hinged cover 16 hinged screws 17
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
In Fig. 1～2, handle component by be fixed on rotation column 2 on the valve body 6 by hinged screw 17, be fixed on platen 3 on this rotation column, by hinged cover 16 with rotate the handle 1 that column 2 fixedlys connected and constitute, rotate upper half part of column 2 and can rotate around bearing pin.Be provided with two valve pockets 12 in the valve body 6, be provided with the proportional pressure-reducing valve that is made of spool 9, spring seat 13, Returnning spring 10 and pressure adjusting spring 11 in each valve pocket 12, the top of each valve pocket 12 is fitted with slide bar 14; Valve body 6 is provided with oil input channel 5, back oil road 4 and two actuator ports 8, and oil input channel 5 is communicated with jointly with two valve pockets 12, and return opening 7 is communicated with two valve pockets 12 jointly by back oil road 4, each actuator port 8 respectively with corresponding valve pocket 12 connections.Enter valve pocket for fear of dust, handle component is coated by dust-proof cover 15.
Working principle: during the plate active handle 1 of the left and right sides, handle 1 can drive the upper half part of rotating column 2 by platen 3 and rotate around bearing pin.When handle 1 is in meta, acting in conjunction lower valve core 9 at Returnning spring 10 and pressure adjusting spring 11 is in the extreme higher position, pilot pressure oil is closed in the oil input channel 5 after filler opening enters, the gap of fluid between spool 9 and valve pocket 12 that enters from actuator port 8 enters valve pocket 12, flows back to fuel tank by back oil road 4, return opening 7 then.When plate active handle 1, slide bar 14 is depressed and is promoted spring seat 13 and moves down, Returnning spring 10 compression, pressure adjusting spring 11 overcomes the elastic force of Returnning spring 10 and promotes spool 9 downwards, thus close and back oil road 4 between oil circuit; Meanwhile, the gap between spool 9 and the valve pocket 12 is communicated with oil input channel 5, and the pressure oil that is enclosed in this moment in the oil input channel 5 enters multiple directional control valve by this gap by actuator port 8 outflows, thereby realizes the commutation of multi-way valve.Because pressure and 10 pairs of spools 9 of Returnning spring of actuator port 8 have an active force that makes progress, and 11 pairs of spools 9 of pressure adjusting spring have reaction force, therefore after moving a segment distance on the spool 9, the stressed balance that reaches automatically of this spool, at this moment, described spool 9 is all closed oil input channel 5, back oil road 4, and the pressure of actuator port 8 remains on a certain value.
Claims (2)
1. hydraulic pilot valve comprises valve body, is arranged on the handle component on this valve body: it is characterized in that: described handle component by be fixed on rotation column (2) on the valve body (6), be fixed on the platen (3) on this rotation column, the handle (1) of fixedlying connected with this platen constitutes; Be provided with two valve pockets (12) in the valve body (6), be provided with spool (9), spring seat (13), Returnning spring (10) and pressure adjusting spring (11) in each valve pocket (12), valve body (6) is provided with oil input channel (5), back oil road (4) and two actuator ports (8), oil input channel (5) and back oil road (4) are communicated with two valve pockets (12) respectively, and each actuator port (8) is communicated with corresponding valve pocket (12) respectively; Be fitted with slide bar (14) on the top of each valve pocket (12).
2. hydraulic pilot valve according to claim 1 is characterized in that: handle component is coated by dust-proof cover (15), rotates column (2) and is fixed on the valve body (6) by hinged screw (17), and handle (1) is connected with rotation column (2) by hinged cover (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920095094XU CN201615100U (en) | 2009-12-31 | 2009-12-31 | Hydraulic pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920095094XU CN201615100U (en) | 2009-12-31 | 2009-12-31 | Hydraulic pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615100U true CN201615100U (en) | 2010-10-27 |
Family
ID=43001469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920095094XU Expired - Fee Related CN201615100U (en) | 2009-12-31 | 2009-12-31 | Hydraulic pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201615100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351906A (en) * | 2016-11-15 | 2017-01-25 | 湖南凯恩利液压机械制造有限公司 | Overflow valve |
| CN108730582A (en) * | 2018-08-01 | 2018-11-02 | 无锡市华通气动制造有限公司 | One kind manually controlling adjusting blowing plant |
-
2009
- 2009-12-31 CN CN200920095094XU patent/CN201615100U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351906A (en) * | 2016-11-15 | 2017-01-25 | 湖南凯恩利液压机械制造有限公司 | Overflow valve |
| CN106351906B (en) * | 2016-11-15 | 2019-02-15 | 湖南凯恩利液压机械制造有限公司 | A kind of overflow valve |
| CN108730582A (en) * | 2018-08-01 | 2018-11-02 | 无锡市华通气动制造有限公司 | One kind manually controlling adjusting blowing plant |
| CN108730582B (en) * | 2018-08-01 | 2023-08-11 | 无锡市华通气动制造有限公司 | Manual control compressed air adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20131231 |