CN201496335U - Automatic balancing valve - Google Patents
Automatic balancing valve Download PDFInfo
- Publication number
- CN201496335U CN201496335U CN2009203099348U CN200920309934U CN201496335U CN 201496335 U CN201496335 U CN 201496335U CN 2009203099348 U CN2009203099348 U CN 2009203099348U CN 200920309934 U CN200920309934 U CN 200920309934U CN 201496335 U CN201496335 U CN 201496335U
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- valve assembly
- control valve
- communicated
- chamber
- pressure control
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Abstract
The utility model discloses an automatic balancing valve, which comprises a valve body. Two pilot controlled check valve components, two direction control valve components and two pressure control valve components arranged on the valve body. Each pilot controlled check valve component has one end thereof connected with a liquid inlet/return chamber of the system and the other end thereof communicated with one chamber of a balance oil cylinder; each direction control valve component has the first end thereof communicated with one chamber of the balance oil cylinder, the second end thereof communicated with the control chamber of the direction control valve component and the third end thereof communicated with the liquid inlet chamber of the pressure control valve component; and the liquid outlet chamber of the pressure control valve component is communicated with the liquid inlet/return chamber of the system. The automatic balancing valve has the advantages of simple structure, easy manufacturing and convenient disassembly and maintenance, and can lock the position of the balance oil cylinder in case not being pressured and enable the balance oil cylinder to float in case of being pressured, so as to realize the attitude regulation stability of a hydraulic support and ensure the safe operation of the support.
Description
Technical field
The utility model relates to a kind of coal mine fully-mechanized mining support apparatus, especially relates to a kind of automatic balancing valve of hydraulic support.
Background technique
In the hydraulic support using process, exist the hydraulic support balancing cylinder life-span too short, the problem that rate of fault is too high is so occurred by a pressure control valve assembly and the balancing compensation valve that the position control valve assembly constitutes.By this valve by hydraulic support when falling post-move frame-setting prop, balancing cylinder floats and adjusts applying automatically according to the roof inclination angle, avoids the balancing cylinder safety valve frequently to open, and avoids balancing cylinder to bear excess pressure repeatedly and influences its working life.The effect of hydraulic support balancing compensation valve is in the hydraulic support using process; during the column setting prop; cavity pressure is lower than position control valve assembly pilot pressure under it; pressure control valve assembly is communicated with the oil cylinder oil circuit and is opened (the balancing cylinder safety valve is not opened) in advance; make the balancing cylinder pressure release of going ahead of the rest, thereby the protection balancing cylinder guarantees the stationarity that the hydraulic support attitude is adjusted; increase support working life, guarantee the support safe operation.Column is crossed position control valve assembly pilot pressure to toplap, pressure control valve assembly and the sealing of oil cylinder oil circuit, and other reversible lock comes the locked cylinder position.
Along with technology develops to integrated, miniaturization, the float automatic balancing valve (or unsteady reversible lock) of control and reversible lock function of integrated two cavity pressures arises at the historic moment, the integrated mounting system designs simplification that makes of function has reduced connection has been installed, and greatly reduces cost.But, in use find to have most hydraulic supports when falling post-move frame-setting prop, the balancing cylinder safety valve is still frequently opened, and illustrate that most reversible locks that float do not play the effect that pressure floats and controls.The effect of the unsteady reversible lock of hydraulic support is in the hydraulic support using process; during the column setting prop; cavity pressure is greater than the unsteady pilot pressure of fluid-control one-way valve assembly under it; pressure control valve assembly is communicated with the oil cylinder oil circuit and is opened (the balancing cylinder safety valve is not opened) in advance; make the balancing cylinder pressure release of going ahead of the rest; thereby protection balancing cylinder; guarantee the stationarity that the hydraulic support attitude is adjusted; increase support working life; guarantee the support safe operation, column is crossed setting pressure to toplap, and the column Pilot operated check valve is closed; cavity pressure is lower than the unsteady pilot pressure of fluid-control one-way valve assembly under the column, and balancing cylinder is locked by two fluid-control one-way valve assemblys.
From the above: the balancing compensation valve function singleness, have only the cavity pressure control function of floating, two cavity pressures float control and locked cylinder position functions that the reversible lock that floats is integrated, plug-in mounting is integrated on the valve piece, has simplified the mounting system structure greatly.But the reversible lock that floats is with the control piston control fluid-control one-way valve assembly that floats, and unsteady pilot pressure can't be regulated, and slope pressure is big when the top, and cavity pressure is little under the column setting prop, just can't hydraulic control unlatching fluid-control one-way valve assembly, can't realize the pressure control function of floating.
The model utility content
The utility model has overcome shortcoming of the prior art, provide a kind of simple in structure, easy processing, be convenient to dismantle and keep in repair, be connected in the automatic balancing valve of hydraulic support balancing cylinder and column oil cylinder, be not with locking balancing cylinder position when pressing, balancing cylinder floated when band was pressed, realize the stationarity that the hydraulic support attitude is adjusted, and guaranteed the support safe operation.
The technical solution of the utility model is: a kind of automatic balancing valve, comprise valve body, and two fluid-control one-way valve assemblys, both direction control valve assembly and two pressure control valve assemblies are installed on described valve body; Sap cavity A1 advances back in the system that also is provided with on described valve body, sap cavity B1, position control valve assembly control chamber C1, balancing cylinder connection chamber ZA, balancing cylinder connection chamber ZB advance back in system; Wherein:
One end of the first fluid-control one-way valve assembly advances back sap cavity A1 with system and links to each other, and the other end is communicated to balancing cylinder connection chamber ZA; One end of first direction control valve assembly is communicated to balancing cylinder connection chamber ZA, an end and is communicated to the admission chamber that position control valve assembly control chamber C1, an end are communicated to first pressure control valve assembly, and the sap cavity that goes out of first pressure control valve assembly advances back sap cavity A1 with system and is communicated with;
One end of the second fluid-control one-way valve assembly advances back sap cavity B1 with system and links to each other, and the other end is communicated to balancing cylinder connection chamber ZB; One end of second direction control valve assembly is communicated to balancing cylinder connection chamber ZB, an end and is communicated to the admission chamber that position control valve assembly control chamber C1, an end are communicated to second pressure control valve assembly, and the sap cavity that goes out of second pressure control valve assembly advances back sap cavity B1 with system and is communicated with.
Described fluid-control one-way valve assembly comprises spool and spool housing, and seal is pressed in the spool housing with the spool joint, at spool and valve core shell intracoelomic cavity spring is installed, and spool is pressed on the seal; Described two fluid-control one-way valve assemblys are integral plugged on valve body, and a shared control piston.
Described position control valve assembly comprises changeover valve core, selector valve valve pocket, commutation joint, commutation push rod, spring seat and commutation spring, on the selector valve valve pocket, have two circular grooves and radial direction through hole, one of them circular groove and radial direction through hole are communicated to balancing cylinder, and another circular groove and radial direction through hole are communicated to the pressure control valve assembly admission chamber; Changeover valve core is positioned at the selector valve valve pocket, and C1 communicates with position control valve assembly control chamber, and the commutation joint is installed on the valve body, and changeover valve core is connected with the commutation push rod; The commutation spring mounts elastically, and is contained in jointly in the commutation joint; In described commutation joint the commutation plug is arranged, the commutation plug contacts with the commutation spring.
Described pressure control valve assembly comprises piston, guide piston, nozzle, spring seat and pressure spring, the pressure control valve assembly admission chamber goes out sap cavity with the position control valve assembly and communicates, pressure control valve assembly goes out sap cavity and returns sap cavity with system and be communicated with, piston communicates with the pressure control valve assembly admission chamber, and be positioned at guide piston, and nozzle is installed on the valve body, and pressure spring mounts elastically, and place jointly in the shell, shell and nozzle link together; In the shell of described pressure control valve assembly, turnbuckle is installed, contacts with described pressure spring.
The changeover valve core of described position control valve assembly be circumferentially with a row or the hole more than the row, the selector valve valve pocket of described position control valve assembly is provided with seal ring.
Be provided with a row or the aperture more than the row on the piston of described pressure control valve assembly, the guide piston of described pressure control valve assembly is provided with the O RunddichtringO.
The piston of described pressure control valve assembly is sphere, matches with the spring seat of pressure control valve assembly.
The commutation push rod of described position control valve assembly is sphere, matches with the spring seat of position control valve assembly.
Compared with prior art, the utility model has the advantages that:
1) the utility model since on valve body integrated two fluid-control one-way valve assemblys, both direction control valve assembly, two pressure control valve assemblies, by working pressure from the pressure control current pressure container of another pressurized container, realize current pressure container pressure grading control, realize the stationarity that the hydraulic support attitude is adjusted, guarantee the support safe operation, prolonged the pressurized container life-span; And become valve separately with the column Pilot operated check valve, be independent of each other, help the transformation of existing hydraulic support.
2) automatic balancing valve of the present utility model is simple in structure, and easy processing is convenient to dismounting and maintenance.
3) the utility model has guaranteed sealing reliability owing to all adopt the design of Sealing Structure of seal ring via hole on position control valve assembly and pressure control valve assembly, guarantees the valve body stable working; Elastic element adopts adjustable structure, has increased the range of working pressure of this valve.
4) the utility model has been realized the band pressure servo-actuated of balancing cylinder and column oil cylinder, simultaneously at the hydraulic support holding state, guaranteed the bearing capacity of support at holding state, the utility model can be widely used in the hydraulic machinery and the hydraulic equipment of similar operating mode, realizes the servo-actuated of heavy wool cylinder band pressure.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is two Pilot operated check valve modular construction sectional views of the present utility model;
Fig. 2 is both direction control valve assembly of the present utility model and two pressure control valve assembly structure sectional views;
Fig. 3 is the fundamental diagram of automatic balancing valve;
Wherein: A1 and B1, sap cavity advances back in system, C1, position control valve assembly control chamber (connecing the column cavity of resorption), ZA and ZB, the balancing cylinder connection chamber, A2 and B2, the safety valve connection chamber, 1, valve body, 5, the spool housing, 6, the seal spring, 9, spool, 10, seal, 15, control piston, 16, the spool joint, 17, seal ring, 20, the selector valve valve pocket, 21, changeover valve core, 22, the commutation push rod, 23, the commutation joint, 24, spring seat, 25, spring, 26, the commutation plug, 29, shell, 32, turnbuckle, 33, pressure spring, 34, spring seat 35, the O RunddichtringO, 36, guide piston, 38, the O RunddichtringO, 39, piston, 43, nozzle, 61, the first fluid-control one-way valve assembly, 62, first direction control valve assembly, 63, first pressure control valve assembly, 64, balancing cylinder, 65, safety valve, 66, the second fluid-control one-way valve assembly, 67, second direction control valve assembly, 68, second pressure control valve assembly.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
As shown in figures 1 and 3, a kind of automatic balancing valve, two fluid-control one-way valve assemblys, both direction control valve assembly and two pressure control valve assemblies of comprising valve body 1 and on valve body 1, installing; Sap cavity A1 advances back in the system that also is provided with on valve body 1, sap cavity B1, position control valve assembly control chamber C1, balancing cylinder connection chamber ZA, balancing cylinder connection chamber ZB, safety valve connection chamber A2 and safety valve connection chamber B2 advance back in system;
One end of the first fluid-control one-way valve assembly 61 advances back sap cavity A1 with system and links to each other, and the other end is communicated to balancing cylinder connection chamber ZA; One end of first direction control valve assembly 62 is communicated to balancing cylinder connection chamber ZA, an end and is communicated to the admission chamber that position control valve assembly control chamber C1, an end are communicated to first pressure control valve assembly 63, and the sap cavity that goes out of first pressure control valve assembly 63 advances back sap cavity A1 with system and is communicated with;
One end of the second fluid-control one-way valve assembly 66 advances back sap cavity B1 with system and links to each other, and the other end is communicated to balancing cylinder and meets chamber ZB; One end of second direction control valve assembly 67 is communicated to balancing cylinder connection chamber ZB, an end and is communicated to the admission chamber that position control valve assembly control chamber C1, an end are communicated to second pressure control valve assembly 68, and the sap cavity that goes out of second pressure control valve assembly 68 advances back sap cavity B1 with system and is communicated with.
Fig. 1 is two Pilot operated check valve modular construction sectional views of the present utility model, comprise spool 9, spool housing 5, seal 10, seal spring 6, control piston 15 and spool joint 16, the seal spring 6 that is installed between spool 9 and the spool housing 5 guarantees that spool 9 and seal 10 fit tightly oppositely sealing of formation, and guarantees to reset after spool 9 is opened; Two fluid-control one-way valve assemblys are integral plugged in valve body 1, and a shared control piston 15.
Fig. 2 is both direction control valve assembly of the present utility model and two pressure control valve assembly structure sectional views, wherein:
The position control valve assembly comprises changeover valve core 21, selector valve valve pocket 20, commutation joint 23, commutation push rod 22, spring seat 24, commutation spring 25, have two circular grooves and radial direction through hole on the selector valve valve pocket 20, two circular grooves and the initial partition of radial direction through hole, one of them circular groove and radial direction through hole are communicated to balancing cylinder, and another circular groove and radial direction through hole are communicated to the pressure control valve assembly admission chamber; Changeover valve core 21 is positioned at selector valve valve pocket 20, cooperate with selector valve valve pocket 20 and to play commutation function, C1 communicates with position control valve assembly control chamber, and commutation joint 23 is installed on the valve body, the stroke of control changeover valve core 21, commutation push rod 22 link to each other with changeover valve core 21 and transmit spring force; Commutation spring 25 is installed on the spring seat 24, and is contained in jointly in the commutation joint 23, and commutation push rod 22 applies predetermined pressure to commutation spool 21 under the effect of commutation spring 25 predetermined loads; Commutation plug 26 is arranged in the commutation joint 23, and commutation plug 26 contacts with commutation spring 25; Changeover valve core 21 be circumferentially with two rounds, a row or multi-row also passable, commutation is realized through 17 backs of the seal ring on the selector valve valve pocket 20 separately in described hole, sealing is reliable;
The pressure control valve assembly assembly comprises piston 39, guide piston 36, nozzle 43, spring seat 34, pressure spring 33, the pressure control valve assembly admission chamber goes out sap cavity with the position control valve assembly and communicates, pressure control valve assembly goes out sap cavity and returns sap cavity with system and be communicated with, pressure control valve assembly piston 39 communicates with the pressure control valve assembly admission chamber, and be positioned at guide piston 36, piston 39 is provided with row's aperture, piston 39 cooperates with guide piston 36 by an O RunddichtringO 38, in the unlatching that realizes pressure control valve assembly through 35 backs of the O RunddichtringO on the guide piston 36, sealing is reliable.Nozzle 43 is installed on the valve body 1; Pressure spring 33 is installed on the spring seat 34, and place jointly in the shell 29, shell 29 links together with nozzle 43, turnbuckle 32 is installed in shell 29, contact with pressure spring 33, thereby under the effect of pressure spring 33 predetermined loads, apply the cracking pressure of predetermined pressure pilot pressure control valve assembly to piston 39 by spring seat 34.
Working principle of the present utility model is seen Fig. 3, in the hydraulic support using process, cavity pressure is lower than under the situation of position control valve assembly pilot pressure under column, position control valve assembly partition balancing cylinder two chamber liquid flow to pressure control valve assembly, and two fluid-control one-way valve assemblys play locking balancing cylinder position.Hydraulic support is when falling post-move frame-setting prop; cavity pressure is greater than position control valve assembly pilot pressure under the column; the position control valve assembly is connected balancing cylinder two chamber liquid flowing to pressure control valve assembly; the pressure control valve assembly setting pressure is much lower than the balancing cylinder safety valve; therefore open automatic balancing valve pressure control valve assembly (the balancing cylinder safety valve is not opened) in advance; make the balancing cylinder pressure release of going ahead of the rest; thereby protection balancing cylinder; guarantee the stationarity that the hydraulic support attitude is adjusted; increase support working life, guarantee the support safe operation.Column is crossed setting pressure to toplap, the column Pilot operated check valve is closed, cavity pressure is lower than position control valve assembly pilot pressure under the column, and the position control valve assembly cuts off balancing cylinder two chamber liquid again to the flowing of pressure control valve assembly, and balancing cylinder is locked by two fluid-control one-way valve assemblys.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. an automatic balancing valve comprises valve body, it is characterized in that: two fluid-control one-way valve assemblys, both direction control valve assembly and two pressure control valve assemblies are installed on described valve body; Sap cavity A1 advances back in the system that also is provided with on described valve body, sap cavity B1, position control valve assembly control chamber C1, balancing cylinder connection chamber ZA, balancing cylinder connection chamber ZB advance back in system; Wherein:
One end of the first fluid-control one-way valve assembly advances back sap cavity A1 with system and links to each other, and the other end is communicated to balancing cylinder connection chamber ZA; One end of first direction control valve assembly is communicated to balancing cylinder connection chamber ZA, an end and is communicated to the admission chamber that position control valve assembly control chamber C1, an end are communicated to first pressure control valve assembly, and the sap cavity that goes out of first pressure control valve assembly advances back sap cavity A1 with system and is communicated with;
One end of the second fluid-control one-way valve assembly advances back sap cavity B1 with system and links to each other, and the other end is communicated to balancing cylinder connection chamber ZB; One end of second direction control valve assembly is communicated to balancing cylinder connection chamber ZB, an end and is communicated to the admission chamber that position control valve assembly control chamber C1, an end are communicated to second pressure control valve assembly, and the sap cavity that goes out of second pressure control valve assembly advances back sap cavity B1 with system and is communicated with.
2. automatic balancing valve according to claim 1, it is characterized in that: described fluid-control one-way valve assembly comprises spool and spool housing, seal is pressed in the spool housing with the spool joint, at spool and valve core shell intracoelomic cavity spring is installed, and spool is pressed on the seal; Described two fluid-control one-way valve assemblys are integral plugged on valve body, and a shared control piston.
3. automatic balancing valve according to claim 1, it is characterized in that: described position control valve assembly comprises changeover valve core, selector valve valve pocket, commutation joint, commutation push rod, spring seat and commutation spring, on the selector valve valve pocket, have two circular grooves and radial direction through hole, one of them circular groove and radial direction through hole are communicated to balancing cylinder, and another circular groove and radial direction through hole are communicated to the pressure control valve assembly admission chamber; Changeover valve core is positioned at the selector valve valve pocket, and C1 communicates with position control valve assembly control chamber, and the commutation joint is installed on the valve body, and changeover valve core is connected with the commutation push rod; The commutation spring mounts elastically, and is contained in jointly in the commutation joint; In described commutation joint the commutation plug is arranged, the commutation plug contacts with the commutation spring.
4. automatic balancing valve according to claim 1, it is characterized in that: described pressure control valve assembly comprises piston, guide piston, nozzle, spring seat and pressure spring, the pressure control valve assembly admission chamber goes out sap cavity with the position control valve assembly and communicates, pressure control valve assembly goes out sap cavity and returns sap cavity with system and be communicated with, piston communicates with the pressure control valve assembly admission chamber, and be positioned at guide piston, nozzle is installed on the valve body, pressure spring mounts elastically, and place jointly in the shell, shell and nozzle link together; In the shell of described pressure control valve assembly, turnbuckle is installed, contacts with described pressure spring.
5. automatic balancing valve according to claim 1 is characterized in that: the changeover valve core of described position control valve assembly be circumferentially with a row or the hole more than the row, the selector valve valve pocket of described position control valve assembly is provided with seal ring.
6. automatic balancing valve according to claim 1 is characterized in that: be provided with a row or the aperture more than the row on the piston of described pressure control valve assembly, the guide piston of described pressure control valve assembly is provided with the O RunddichtringO.
7. automatic balancing valve according to claim 1 is characterized in that: the piston of described pressure control valve assembly is sphere, matches with the spring seat of pressure control valve assembly.
8. automatic balancing valve according to claim 1 is characterized in that: the commutation push rod of described position control valve assembly is sphere, matches with the spring seat of position control valve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203099348U CN201496335U (en) | 2009-09-09 | 2009-09-09 | Automatic balancing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203099348U CN201496335U (en) | 2009-09-09 | 2009-09-09 | Automatic balancing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496335U true CN201496335U (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203099348U Expired - Fee Related CN201496335U (en) | 2009-09-09 | 2009-09-09 | Automatic balancing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496335U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797717A (en) * | 2011-05-27 | 2012-11-28 | 上海创力集团股份有限公司 | Safety type hydraulic lock for height adjustable hydraulic system of coal cutter |
| CN106240586A (en) * | 2016-10-17 | 2016-12-21 | 淮南矿业(集团)有限责任公司 | A kind of track hydraulic pressure is from moving flat car and the control method of movement thereof |
| CN110410115A (en) * | 2019-07-22 | 2019-11-05 | 天地科技股份有限公司 | A kind of column pressure adaptive regulator control system |
| CN111878477A (en) * | 2020-08-04 | 2020-11-03 | 朱世钰 | Flow type non-leakage superposition double-balance valve |
-
2009
- 2009-09-09 CN CN2009203099348U patent/CN201496335U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797717A (en) * | 2011-05-27 | 2012-11-28 | 上海创力集团股份有限公司 | Safety type hydraulic lock for height adjustable hydraulic system of coal cutter |
| CN102797717B (en) * | 2011-05-27 | 2015-04-08 | 上海创力集团股份有限公司 | Safety type hydraulic lock for height adjustable hydraulic system of coal cutter |
| CN106240586A (en) * | 2016-10-17 | 2016-12-21 | 淮南矿业(集团)有限责任公司 | A kind of track hydraulic pressure is from moving flat car and the control method of movement thereof |
| CN110410115A (en) * | 2019-07-22 | 2019-11-05 | 天地科技股份有限公司 | A kind of column pressure adaptive regulator control system |
| CN110410115B (en) * | 2019-07-22 | 2020-11-17 | 天地科技股份有限公司 | Self-adaptive control system for pressure of stand column |
| CN111878477A (en) * | 2020-08-04 | 2020-11-03 | 朱世钰 | Flow type non-leakage superposition double-balance valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20150909 |
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| EXPY | Termination of patent right or utility model |