CN2682234Y - Brake balancing valve - Google Patents
Brake balancing valve Download PDFInfo
- Publication number
- CN2682234Y CN2682234Y CN 200420030363 CN200420030363U CN2682234Y CN 2682234 Y CN2682234 Y CN 2682234Y CN 200420030363 CN200420030363 CN 200420030363 CN 200420030363 U CN200420030363 U CN 200420030363U CN 2682234 Y CN2682234 Y CN 2682234Y
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- China
- Prior art keywords
- valve
- main
- way
- valve body
- valve core
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- Expired - Fee Related
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Abstract
Disclosed is a brake balancing valve suitable for the hydraulic circuits of the hydraulic hoist of the hoisting mechanism, the amplitude changing mechanism and the telescoping mechanism, etc, which solves the problem of the existing balancing valve of complicated structure, relatively larger volume and unideal sealing performance, etc. The utility model comprises a control valve, a one-way valve and a one-way throttle valve. The control valve comprises a valve body, a main valve core and a pressure adjusting spring. A first main oil port and a second main oil port are provided on the external side of the valve body. The one-way valve is positioned on the main valve core, and a spring is provided on a one-way valve core. The brake balancing valve is characterized in that the right end part of the main valve core is provided with an annular groove and an axial inner bore; the annular groove is communicated with the axial inner bore; a steel ball is provided at the communicating point; the right end part of the main valve core is also provided with a damping bore communicating the annular groove and the axial inner bore to form the one-way throttle valve; the annular groove is communicated with the oil port on the external side of the valve body. The utility model has the advantage that a unique one-way damping mechanism is positioned on the main valve core, which ensures the anti-interference ability of the element, simplifies the structure of the balancing valve, and reduces the volume and weight, having compact structure and reliable performance.
Description
Technical field
The utility model belongs to a kind of hydrovalve, the brake balancing valve in the oil hydraulic circuit such as particularly a kind of lifting mechanism that is applicable to hydraulic hoist, jib lubbing mechanism, extending means.
Background technique
In machinery such as modern project machinery, building machinery, widely applied the hydraulic pressure load bearing system, equilibrium valve is the crucial hydraulic element in this type systematic.Equilibrium valve is mainly used in the load balance control and the compound control of break of oil hydraulic cylinder or oil hydraulic motor, the good and bad technical performance that directly influences engineering machinery of its performance.Existing hydraulically balanced valve generally is made of control valve, one-way valve and one-way throttle valve, and one-way valve is nested the connection with control valve, and one-way throttle valve connects side by side with control valve, promptly adopts outer folded formula fit.Existing questions is, complex structure, and volume is bigger, installs inconvenient.In addition, be face seal between one-way valve and the valve body, promptly adopt the rectangular seal sealing, the resistance during motion is bigger.And seal ring is arranged on the nonreturn valve core, and body cavity is as sliding sealing surface, and its machining accuracy is not easy to improve, and sealability is not ideal enough.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes problems such as existing equilibrium valve complex structure, volume are big, sealability is undesirable, provides a kind of compact structure, the brake balancing valve of reliable performance.
The utility model comprises control valve, one-way valve and one-way throttle valve, control valve comprises valve body, main valve plug and pressure adjusting spring, the first main hydraulic fluid port and the second main hydraulic fluid port are arranged in the outside of valve body, one-way valve is positioned on the main valve plug, spring is housed on nonreturn valve core, its special way is, a circular groove and an axial bore are arranged in the right part of main valve plug, circular groove is connected with axial bore, in connection place steel ball is housed, the damping hole that also has a connection circular groove and axial bore in the right part of main valve plug constitutes one-way throttle valve, and described circular groove communicates with the hydraulic fluid port in the valve body outside.
The line contact sealing circle that matches with the outer surface of nonreturn valve core is housed, to reduce area of contact on the inner chamber of valve body.
Advantage of the present utility model is:
Unique unidirectional damping mechanism is set on main valve plug, has guaranteed the antijamming capability of element, simplified the structure of equilibrium valve, reduced volume and weight, compact structure, reliable performance is convenient to the assembling of hydraulic system.
The line contact sealing circle that matches with the outer surface of nonreturn valve core is installed on the inner chamber of valve body, with the outer surface of nonreturn valve core as sliding sealing surface, because the outer surface of nonreturn valve core is than the easier processing of body cavity, so its machining accuracy height, resistance during motion is little, sealability is better, has prolonged the working life of seal ring, and can satisfy the servo-actuated of element.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the B portion zoomed-in view of Fig. 1;
Fig. 3 is a fundamental diagram of the present utility model.
Embodiment
As shown in drawings, the utility model comprises control valve, one-way valve and one-way throttle valve, and control valve comprises valve body 19, main valve plug 9 and pressure adjusting spring 5, and main valve plug 9 is installed in the inner chamber of valve body 19, and the first main hydraulic fluid port A and the second main hydraulic fluid port P are arranged in the outside of valve body 19; End at valve body 19 is equipped with guide sleeve 4, seals with seal ring 6 between guide sleeve 4 and the valve body 19; Dust cap 1 is housed on guide sleeve 4, seals with seal ring 2 between dust cap 1 and the guide sleeve 4; In dust cap 1 and guide sleeve 4 pressure regulating screw 3 is housed, described pressure adjusting spring 5 is installed between pressure regulating screw 3 and the main valve plug 9, between main valve plug 9 and pressure adjusting spring 5 spring seat 7 is housed also, so that pressure adjusting spring 5 is positioned; Match with guide sleeve 4 in the left part of described main valve plug 9, between is equipped with seal ring 8; Match with the inner chamber of valve body 19 in the right part of main valve plug 9, O-ring seals 13 and rectangular seal 14 are housed between the two, reliable to guarantee its sealing; Described one-way valve is positioned on the main valve plug 9, nonreturn valve core 10 is sleeved on the main valve plug 9, and be arranged in the inner chamber of valve body 19, match with the conical surface of main valve plug 9 left ends in the end of nonreturn valve core 10, control the switching between the first main hydraulic fluid port A and the second main hydraulic fluid port P, spring 20 also is housed on nonreturn valve core 10; The polytetrafluoroethylene line contact sealing circle 12 that matches with the outer surface of nonreturn valve core 10 is housed on the inner chamber of valve body 19, to reduce area of contact, seal ring 11 also is housed on the inner chamber of valve body 19, seal ring 11 matches with seal ring 12, guarantees that sealing is reliable between nonreturn valve core 10 and the valve body 19; A circular groove a1 and an axial bore a2 are arranged in the right part of main valve plug 9, circular groove a1 is connected with axial bore a2, in connection place steel ball 17 is housed, the damping hole a3 that also has a connection circular groove a1 and axial bore a2 in the right part of main valve plug 9, constitute one-way throttle valve, described circular groove a1 communicates with the oily Pc in valve body 19 outsides; Seal ring 18 also is housed in circular groove a1, and seal ring 18 remains in place steel ball 17 and goes up; Right-hand member at valve body 19 also is equipped with plug screw 15, seals with seal ring 16 between plug screw 15 and the valve body 19.
Claims (3)
1, a kind of brake balancing valve, comprise control valve, one-way valve and one-way throttle valve, control valve comprises valve body, main valve plug and pressure adjusting spring, the first main hydraulic fluid port and the second main hydraulic fluid port are arranged in the outside of valve body, one-way valve is positioned on the main valve plug, spring is housed on nonreturn valve core, it is characterized in that, a circular groove and an axial bore are arranged in the right part of main valve plug, circular groove is connected with axial bore, in connection place steel ball is housed, and also has the damping hole of a connection circular groove and axial bore in the right part of main valve plug, constitute one-way throttle valve, described circular groove communicates with the hydraulic fluid port in the valve body outside.
2, brake balancing valve according to claim 1 is characterized in that, seal ring also is housed in circular groove.
3, brake balancing valve according to claim 1 is characterized in that, the line contact sealing circle that matches with the outer surface of nonreturn valve core is housed on the inner chamber of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030363 CN2682234Y (en) | 2004-02-12 | 2004-02-12 | Brake balancing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030363 CN2682234Y (en) | 2004-02-12 | 2004-02-12 | Brake balancing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2682234Y true CN2682234Y (en) | 2005-03-02 |
Family
ID=34607230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420030363 Expired - Fee Related CN2682234Y (en) | 2004-02-12 | 2004-02-12 | Brake balancing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2682234Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629587B (en) * | 2009-08-06 | 2011-05-11 | 宁波汉商液压有限公司 | Hydraulic balance valve |
| CN103104566A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Plug-in mounting type balance valve |
| CN103104565A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Balance valve |
-
2004
- 2004-02-12 CN CN 200420030363 patent/CN2682234Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629587B (en) * | 2009-08-06 | 2011-05-11 | 宁波汉商液压有限公司 | Hydraulic balance valve |
| CN103104566A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Plug-in mounting type balance valve |
| CN103104565A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Balance valve |
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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: 20050302 |