CN104912863A - Single-valve-core two-position three-way electro-hydraulic change valve applied to hydraulic pile hammer and method - Google Patents
Single-valve-core two-position three-way electro-hydraulic change valve applied to hydraulic pile hammer and method Download PDFInfo
- Publication number
- CN104912863A CN104912863A CN201510294914.8A CN201510294914A CN104912863A CN 104912863 A CN104912863 A CN 104912863A CN 201510294914 A CN201510294914 A CN 201510294914A CN 104912863 A CN104912863 A CN 104912863A
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- China
- Prior art keywords
- valve
- oil
- spool
- hydraulic
- valve core
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
Abstract
The invention relates to a single-valve-core two-position three-way electro-hydraulic change valve applied to a hydraulic pile hammer and a method. The technical solution is as follows: a valve oil distribution cover plate, a valve core body and a valve seat body actually form a hydraulic cylinder, the upper part of the valve core body forms a piston part of the hydraulic cylinder, the lower part of the valve core body forms a piston part of the hydraulic cylinder, the valve oil distribution cover plate (2) forms a cylinder part and back end cover of the hydraulic cylinder, and the upper part of the valve seat body forms a front end cover of the hydraulic cylinder; the lower part of a valve core (6) is matched with the lower part of the valve seat body so as to realize an on-off function of a two-position three-way valve. The invention has the beneficial effects that due to the design of a conical sealing surface, when the working state is linear seal, the leakage amount is reduced, and the volumetric efficiency of a hydraulic system is improved; due to the design of seal length of a slide valve, the communication of interlocked valve ways in the working state is avoided, so that the working of the system is more reliable, the energy loss is avoided, and meanwhile, such advantages that the interlocking among slide valve ways and the seal of a conical valve are excellent, and the leakage is low are provided.
Description
Technical field
The present invention relates to a kind of electro-hydraulic reversing valve and method of hydraulic pile hammer, particularly a kind of single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer and method.
Background technique
At present, the hydraulicdirectional control valve used in hydraulic pile hammer is divided into guiding valve and 2/2-way cone valve by spool type, and wherein guiding valve is clearance seal, and sealing is poor.There is certain seal length in spool and valve port, therefore sliding valve movement exists a dead band, there will not be instantaneous conducting phenomenon between valve road.Poppet spool valve semi-cone angle is generally 12 ° ~ 20 °, is linear sealing when valve port is closed, good seal performance and being active in one's movements, but needs multiple valve to combinationally use, and reaches the object of multi-way reversing, easily occurs instantaneous conducting phenomenon between valve road in commutation process.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, a kind of single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer and method are provided, reduce the seal length of guiding valve, retain a motion dead band, there will not be between valve road instantaneous to logical phenomenon.Cone valve provides the sealing under working state, makes favorable sealing property.
Its technological scheme comprises solenoid directional control valve (1), valve oil distributing cover plate (2), valve core piston (3), upper set screw nut (4), upper valve base (5), spool (6), valve seat cover (7), lower valve base (8), lower set screw nut (9) and corresponding Sealing
Described valve oil distributing cover plate (2) top is processed with the oilhole and solenoid directional control valve fixed hole that coordinate with solenoid directional control valve (1), valve oil distributing cover plate (2) is inner for having the cylindrical body of three steps, for coordinating with two piston areas on valve core piston (3) respectively and coordinating with valve seat cover (7);
Described spool (6) is hollow cylinder, and valve core piston (3) is for having the hollow cylinder of two steps, and described spool (6) and valve core piston (3) are threaded connection rear formation valve core;
Described valve seat cover (7) is hollow cylinder, and inner cylinder coordinates with spool (6), and exterior circular column coordinates with valve oil distributing cover plate (2), the valve mounting hole of joining on cargo tank (10) respectively,
The coaxial line of described valve seat cover (7), upper valve base (5), lower valve base (8), upper set screw nut (4), lower set screw nut (9) is installed and is formed valve body, valve core bottom is installed in valve body, and valve core top is installed in valve oil distributing cover plate (2); In fact described valve oil distributing cover plate (2), valve core, valve body form an oil hydraulic cylinder, the piston portion forming oil hydraulic cylinder above of valve core, the piston portion of oil hydraulic cylinder is formed below valve core, valve oil distributing cover plate (2) forms cylinder part and the rear portion end cap of oil hydraulic cylinder, and valve body top forms the front cover of oil hydraulic cylinder; The lower part of spool (6) coordinates with the lower part of valve body, realizes the switching function of two position three-way valve.
Above-mentioned spool (6) is processed with center spool hole (62) and spool oil inlet passage hole (63), spool drainback passage oilhole (61), wherein, the top in center spool hole (62) connects spool drainback passage oilhole (61), and bottom connects spool oil inlet passage hole (63); Spool oil inlet passage hole (63) is for being communicated with hydraulic oil oil-feed; Spool drainback passage oilhole (61) is for being communicated with hydraulic oil oil return; Two ends, spool (6) intermediate step cylndrical surface are processed with conical seal (contact) face respectively, form linear sealing for coordinating with the sealing surface of upper valve base, lower valve base.
Two steps of above-mentioned valve core piston (3) being all processed with the seal groove for installing Sealing, forming two piston areas; The stepped cylindrical face that diameter is relatively large is valve core piston working piston (42), and its effect promotes moving up and down of spool; The step that diameter is relatively little is valve core piston equalizing piston (41), and its effect is the hydraulic action of balance valve core top and bottom, reduces valve core movement resistance.
Above-mentioned valve seat cover (7) is provided with valve seat cover oil-feed port hole (72), valve seat cover oil return port hole (71), and valve seat cover oil-feed port hole (72), valve seat cover oil return port hole (71) are communicated with spool oil inlet passage hole (63), spool drainback passage oilhole (61).
Above-mentioned upper valve base (5), lower valve base (8) are cover shape structure, at one end internal surface processing conical seal (contact) face of cover, form linear sealing for coordinating with the conical seal (contact) face on spool; Upper valve base (5), lower valve base (8) are arranged on the top and bottom of valve seat cover (7) respectively, are fixed in valve seat cover (7) with set screw nut (4), lower set screw nut (9).
The using method of a kind of single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer that the present invention mentions, comprises the following steps:
Valve oil distributing cover plate (2), valve core, valve body form an oil hydraulic cylinder, the piston portion forming oil hydraulic cylinder above of valve core, the piston portion of oil hydraulic cylinder is formed below valve core, valve oil distributing cover plate (2) forms cylinder part and the rear portion end cap of oil hydraulic cylinder, and valve body top forms the front cover of oil hydraulic cylinder; The lower part of spool (6) coordinates with the lower part of valve body, realizes the switching function of two position three-way valve;
When electromagnetic valve valve core piston moves, hydraulic oil oil inlet passage and center hole are connected, the oil-feed of two media operation oil hydraulic cylinder, and when electromagnetic valve valve core piston moves down, hydraulic oil drainback passage and center hole are connected, the oil return of two media operation oil hydraulic cylinder.
The invention has the beneficial effects as follows: due to the design of conical seal (contact) face, be sealed into linear sealing in working order, reduce leakage rate, improve hydraulic system volumetric efficiency; There is the dead band of changing between working state in the design due to guiding valve seal length, the conducting during avoiding working state between interlock valve road, makes system works more reliable, avoid energy loss; Thus make the present invention have the little advantage of the excellent leakage of sealing of interlocking between guiding valve path and cone valve simultaneously.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present invention;
Fig. 2 is valve cover structural drawing of the present invention;
Fig. 3 is the A-A structural drawing of valve cover of the present invention;
Fig. 4 is valve core structure figure of the present invention;
Fig. 5 is valve core piston structural drawing of the present invention;
Fig. 6 is valve seat noose composition of the present invention;
In upper figure: solenoid directional control valve 1, valve oil distributing cover plate 2, valve core piston 3, upper set screw nut 4, upper valve base 5, spool 6, valve seat cover 7, lower valve base 8, lower set screw nut 9, join sealing cone 64 on cargo tank 10, valve core piston equalizing piston 41, valve core piston working piston 42, spool drainback passage hole 61, center spool hole 62, spool oil inlet passage hole 63, spool, the spool lower seal conical surface 65, valve seat cover oil return port hole 71, valve seat cover oil-feed port hole 72.
Embodiment
As shown in Figure 1, the single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer that the present invention mentions, comprise solenoid directional control valve 1, valve oil distributing cover plate 2, valve core piston 3, upper set screw nut 4, upper valve base 5, spool 6, valve seat cover 7, lower valve base 8, lower set screw nut 9, join cargo tank 10, on spool, be wherein provided with spool drainback passage hole 61, center spool hole 62, spool oil inlet passage hole 63, sheathed in respect of valve seat cover oil return port hole 71, valve seat cover oil-feed port hole 72 at valve seat.
As shown in Figure 1, solenoid valve 1 is arranged on the upper face of valve oil distributing cover plate 2 by bolt.
Valve oil distributing cover plate 2 top is processed with the oilhole and solenoid directional control valve 1 fixed hole that coordinate with solenoid directional control valve 1 as Figure 2-3, valve oil distributing cover plate 2 inside is for having the cylindrical body of three steps, be respectively used to coordinate with the piston area of two on valve core piston and overlap with valve seat coordinate, valve oil distributing cover intralamellar part is processed with oilhole is in addition solenoid directional control valve 1 oil-feed and oil return, and the working solution force feed that solenoid directional control valve 1 is controlled, towards epicoele and the cavity of resorption of the working piston in valve core piston 3.
As shown in Figure 4, spool 6 is hollow cylinder, it is processed with center oilhole 62 and oil inlet passage oilhole 63, drainback passage oilhole 61.As shown in Figure 1, wherein center oilhole is communicated with 62 work oilholes; Oil inlet passage oilhole 63 is for being communicated with hydraulic oil oil-feed; Drainback passage oilhole 61 is for being communicated with hydraulic oil oil return.Two ends, spool intermediate step cylndrical surface are processed with cone seal respectively, and 64,65, form linear sealing for coordinating with the sealing surface of upper valve base 5, lower valve base 8.
As shown in Figure 5, valve core piston is the hollow cylinder with two steps, step is all processed with the seal groove for installing Sealing, forms two pistons 41,42.The stepped cylindrical face that diameter is relatively large is working piston 42, and its effect promotes moving up and down of spool; The step that diameter is relatively little is equalizing piston 41, and its effect is the hydraulic action of balance valve core top and bottom, reduces valve core movement resistance.
As shown in Figure 6, valve seat cover 7 is hollow cylinder, and inner cylinder coordinates with spool, and exterior circular column coordinates with valve cover, the valve mounting hole of joining on cargo tank respectively.Valve seat cover 7 is also designed with oil inlet passage oilhole 72, drainback passage oilhole 71, and these oil inlet passage oilholes 72, drainback passage oilhole 71 have with the oil inlet passage oilhole 63 on spool 6, drainback passage oilhole 61 position relationship determined.
Upper valve base, lower valve base are cover shape structure, at one end internal surface processing conical seal (contact) face of cover, form linear sealing for coordinating with the conical seal (contact) face on spool.
As shown in Figure 1, spool 6 and valve core piston 4 are threaded connection rear formation valve core, and upper valve base 5, lower valve base 8 are arranged on the top and bottom of valve seat cover 7 respectively, are fixed in valve seat cover 7 with set screw nut 4, lower set screw nut 9.Valve seat cover 7, upper valve base 5, lower valve base 8, upper set screw nut 4, lower set screw nut 9 coaxial line are installed and are formed valve body, and valve core bottom is installed in valve body, and valve core top is installed in cover plate.
The using method of the single spool two-position three way electro-hydraulic reversing valve that the present invention mentions is:
As shown in Figure 1, in fact cover plate 2, valve core, valve body form an oil hydraulic cylinder, and the piston portion forming oil hydraulic cylinder above of valve core, forms the piston rod portion of oil hydraulic cylinder below spool 6, cover plate forms cylinder part and the rear portion end cap of oil hydraulic cylinder.Valve seat overlaps the front cover that 7 tops form oil hydraulic cylinder.The lower part that lower part and the valve seat of spool 6 overlap 7 coordinates, and realizes the switching function of two position three-way valve.When electromagnetic valve valve core piston 42 moves, hydraulic oil oil inlet passage and center hole are connected, the oil-feed of two media operation oil hydraulic cylinder, and when electromagnetic valve valve core piston 42 moves down, hydraulic oil drainback passage and center hole are connected, the oil return of two media operation oil hydraulic cylinder.
The advantage of the single spool two-position three way electro-hydraulic reversing valve that the present invention mentions is:
Meanwhile, there is the advantage that the excellent leakage of sealing of interlocking between guiding valve path and cone valve is little.
The above is only preferred embodiment of the present invention, and the pro forma restriction of non-invention, every according to technical spirit of the present invention to simple modification that above embodiment does, equivalent variations and modification, all belong within technical solution of the present invention scope.
Claims (6)
1. the single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer, it is characterized in that: comprise solenoid directional control valve (1), valve oil distributing cover plate (2), valve core piston (3), upper set screw nut (4), upper valve base (5), spool (6), valve seat cover (7), lower valve base (8), lower set screw nut (9) and corresponding Sealing, described valve oil distributing cover plate (2) top is processed with the oilhole and solenoid directional control valve fixed hole that coordinate with solenoid directional control valve (1), valve oil distributing cover plate (2) is inner for having the cylindrical body of three steps, for coordinating with two piston areas on valve core piston (3) respectively and coordinating with valve seat cover (7), described spool (6) is hollow cylinder, and valve core piston (3) is for having the hollow cylinder of two steps, and described spool (6) and valve core piston (3) are threaded connection rear formation valve core, described valve seat cover (7) is hollow cylinder, and inner cylinder coordinates with spool (6), and exterior circular column coordinates with valve oil distributing cover plate (2), the valve mounting hole of joining on cargo tank (10) respectively, the coaxial line of described valve seat cover (7), upper valve base (5), lower valve base (8), upper set screw nut (4), lower set screw nut (9) is installed and is formed valve body, valve core bottom is installed in valve body, and valve core top is installed in valve oil distributing cover plate (2), in fact described valve oil distributing cover plate (2), valve core, valve body form an oil hydraulic cylinder, the piston portion forming oil hydraulic cylinder above of valve core, the piston portion of oil hydraulic cylinder is formed below valve core, valve oil distributing cover plate (2) forms cylinder part and the rear portion end cap of oil hydraulic cylinder, and valve body top forms the front cover of oil hydraulic cylinder, the lower part of spool (6) coordinates with the lower part of valve body, realizes the switching function of two position three-way valve.
2. the single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer according to claim 1, it is characterized in that: described spool (6) is processed with center spool hole (62) and spool oil inlet passage hole (63), spool drainback passage oilhole (61), wherein, the top in center spool hole (62) connects spool drainback passage oilhole (61), and bottom connects spool oil inlet passage hole (63); Spool oil inlet passage hole (63) is for being communicated with hydraulic oil oil-feed; Spool drainback passage oilhole (61) is for being communicated with hydraulic oil oil return; Two ends, spool (6) intermediate step cylndrical surface are processed with conical seal (contact) face respectively, form linear sealing for coordinating with the sealing surface of upper valve base, lower valve base.
3. the single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer according to claim 1, is characterized in that: two steps of described valve core piston (3) are all processed with the seal groove for installing Sealing, forming two piston areas; The stepped cylindrical face that diameter is relatively large is valve core piston working piston (42), and its effect promotes moving up and down of spool; The step that diameter is relatively little is valve core piston equalizing piston (41), and its effect is the hydraulic action of balance valve core top and bottom, reduces valve core movement resistance.
4. the single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer according to claim 1, it is characterized in that: described valve seat cover (7) is provided with valve seat cover oil-feed port hole (72), valve seat cover oil return port hole (71), and valve seat cover oil-feed port hole (72), valve seat cover oil return port hole (71) are communicated with spool oil inlet passage hole (63), spool drainback passage oilhole (61).
5. the single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer according to claim 1, it is characterized in that: described upper valve base (5), lower valve base (8) are cover shape structure, at one end internal surface processing conical seal (contact) face of cover, form linear sealing for coordinating with the conical seal (contact) face on spool; Upper valve base (5), lower valve base (8) are arranged on the top and bottom of valve seat cover (7) respectively, are fixed in valve seat cover (7) with set screw nut (4), lower set screw nut (9).
6. a using method for the single spool two-position three way electro-hydraulic reversing valve for hydraulic pile hammer according to any one of claim 1-5, is characterized in that, comprise the following steps:
Valve oil distributing cover plate (2), valve core, valve body form an oil hydraulic cylinder, the piston portion forming oil hydraulic cylinder above of valve core, the piston portion of oil hydraulic cylinder is formed below valve core, valve oil distributing cover plate (2) forms cylinder part and the rear portion end cap of oil hydraulic cylinder, and valve body top forms the front cover of oil hydraulic cylinder; The lower part of spool (6) coordinates with the lower part of valve body, realizes the switching function of two position three-way valve;
When electromagnetic valve valve core piston moves, hydraulic oil oil inlet passage and center hole are connected, the oil-feed of two media operation oil hydraulic cylinder, and when electromagnetic valve valve core piston moves down, hydraulic oil drainback passage and center hole are connected, the oil return of two media operation oil hydraulic cylinder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335705.2A CN107013523B (en) | 2015-06-02 | 2015-06-02 | The reversing arrangement and application method of a kind of hydraulic hammer |
| CN201510294914.8A CN104912863B (en) | 2015-06-02 | 2015-06-02 | Single-valve-core two-position three-way electro-hydraulic change valve applied to hydraulic pile hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510294914.8A CN104912863B (en) | 2015-06-02 | 2015-06-02 | Single-valve-core two-position three-way electro-hydraulic change valve applied to hydraulic pile hammer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710335705.2A Division CN107013523B (en) | 2015-06-02 | 2015-06-02 | The reversing arrangement and application method of a kind of hydraulic hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104912863A true CN104912863A (en) | 2015-09-16 |
| CN104912863B CN104912863B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710335705.2A Active CN107013523B (en) | 2015-06-02 | 2015-06-02 | The reversing arrangement and application method of a kind of hydraulic hammer |
| CN201510294914.8A Active CN104912863B (en) | 2015-06-02 | 2015-06-02 | Single-valve-core two-position three-way electro-hydraulic change valve applied to hydraulic pile hammer |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710335705.2A Active CN107013523B (en) | 2015-06-02 | 2015-06-02 | The reversing arrangement and application method of a kind of hydraulic hammer |
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| Country | Link |
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| CN (2) | CN107013523B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109594561B (en) * | 2018-11-07 | 2020-10-27 | 太原理工大学 | Hydraulic linear impact vibration pile hammer machine |
| CN113958726B (en) * | 2021-10-19 | 2024-03-08 | 涌镇液压机械（上海）有限公司 | Valve core structure of internal flow reversing valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2949231A1 (en) * | 1979-12-07 | 1981-06-11 | G.L. Rexroth Gmbh, 8770 Lohr | PRESSURE, IN PARTICULAR PRESSURE REDUCING VALVE |
| US5293685A (en) * | 1991-09-19 | 1994-03-15 | Mannesmann Aktiengesellschaft | Method of making slide valves with tappets and the slide valves |
| CN2340990Y (en) * | 1997-12-31 | 1999-09-29 | 张健华 | Piston controlling valve for various hydraulic pile hammer |
| CN1763384A (en) * | 2004-09-29 | 2006-04-26 | 马克阀门公司 | Directly operated pneumatic valve having a differential assist return |
| CN201891689U (en) * | 2010-11-30 | 2011-07-06 | 天津工程机械研究院 | Cartridge inserted two-position three-way electro-hydraulic reversing valve |
| CN104454058A (en) * | 2013-09-17 | 2015-03-25 | 株式会社电装 | Valve timing control apparatus |
| CN204783908U (en) * | 2015-06-02 | 2015-11-18 | 东营华晏石油技术有限公司 | A single valve core two -position three way electro -hydraulic reversing valve for hydraulic pile driving hammer |
-
2015
- 2015-06-02 CN CN201710335705.2A patent/CN107013523B/en active Active
- 2015-06-02 CN CN201510294914.8A patent/CN104912863B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2949231A1 (en) * | 1979-12-07 | 1981-06-11 | G.L. Rexroth Gmbh, 8770 Lohr | PRESSURE, IN PARTICULAR PRESSURE REDUCING VALVE |
| US5293685A (en) * | 1991-09-19 | 1994-03-15 | Mannesmann Aktiengesellschaft | Method of making slide valves with tappets and the slide valves |
| CN2340990Y (en) * | 1997-12-31 | 1999-09-29 | 张健华 | Piston controlling valve for various hydraulic pile hammer |
| CN1763384A (en) * | 2004-09-29 | 2006-04-26 | 马克阀门公司 | Directly operated pneumatic valve having a differential assist return |
| CN201891689U (en) * | 2010-11-30 | 2011-07-06 | 天津工程机械研究院 | Cartridge inserted two-position three-way electro-hydraulic reversing valve |
| CN104454058A (en) * | 2013-09-17 | 2015-03-25 | 株式会社电装 | Valve timing control apparatus |
| CN204783908U (en) * | 2015-06-02 | 2015-11-18 | 东营华晏石油技术有限公司 | A single valve core two -position three way electro -hydraulic reversing valve for hydraulic pile driving hammer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104912863B (en) | 2017-05-24 |
| CN107013523A (en) | 2017-08-04 |
| CN107013523B (en) | 2018-05-01 |
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