CN203548395U - Plate-type hydraulic balance valve - Google Patents
Plate-type hydraulic balance valve Download PDFInfo
- Publication number
- CN203548395U CN203548395U CN201320631495.9U CN201320631495U CN203548395U CN 203548395 U CN203548395 U CN 203548395U CN 201320631495 U CN201320631495 U CN 201320631495U CN 203548395 U CN203548395 U CN 203548395U
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- China
- Prior art keywords
- valve
- damping hole
- valve body
- spring chamber
- main valve
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- Expired - Fee Related
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Abstract
The utility model relates to a balance valve, in particular to a plate-type hydraulic balance valve. The plate-type hydraulic balance valve comprises a valve body (5); a left end cover (4) and a right end cover (8) are respectively arranged at the left end and the right end of the valve body (5); a damping hole (a) is formed in the left end cover (4); a one-way valve (6), a main valve element (1) and a control piston (3) are installed in the valve body (5), wherein the main valve element (1) is connected with the valve body (5) through a valve pocket (2); an axial center hole is formed in the main valve element (1); a spring chamber is arranged between the main valve element (1) and the right end cover (8); a spring seat for supporting the spring chamber is arranged below the spring chamber; a small one-way valve (7) is arranged at the right end of the axial center hole; a damping hole (e) which is communicated with the axial center hole of the main valve element and the spring chamber is formed in a valve body (5) of the small one-way valve (7); a damping hole (f) is formed in the spring seat; an axial damping hole (b) and a radial damping hole (d) are machined in the control piston (3). The plate-type hydraulic balance valve provided by the utility model totally has five damping holes, the structure is relatively simple, and the valve is not apt to get blocked.
Description
Technical field
The utility model relates to a kind of equilibrium valve, relates in particular to a kind of board-like equilibrium valve.
Background technique
Equilibrium valve also claims speed limiting lock, be widely used in engineering machinery (particularly handling machinery, bridge equipment) hydraulic system, to improve its stable working, operational safety, it is in hydraulic system, can realize the locking of oil hydraulic cylinder and oil hydraulic motor, make it not because automatic downslide appears in the effect of load, play the effect of locking; The load speed limit landing that also can make oil hydraulic cylinder and motor control, avoids the accidents caused generation of hypervelocity downslide.But the most structure relative complex of existing equilibrium valve, damping hole is many and easily stifled.
Summary of the invention
The utility model aims to provide the not susceptible to plugging plate type hydraulic equilibrium valve of a kind of damping hole.
Plate type hydraulic equilibrium valve described in the utility model, comprises valve body, and the left and right two ends of valve body are respectively equipped with left end cap and right end cap, and left end cap is provided with damping hole; One-way valve, main valve plug and control piston are installed in valve body, and wherein main valve plug is connected with valve body by valve pocket; Main valve plug inside offers axial center hole, between main valve plug and right end cap, is provided with spring chamber, and spring chamber has the spring seat in supported spring chamber; The right-hand member of axial center hole is provided with little one-way valve, has a damping hole that is communicated with main valve plug axial center hole and spring chamber on the valve body of little one-way valve; In spring seat, be provided with a damping hole; On control piston, be processed with axial damping hole and damping hole radially.
Plate type hydraulic equilibrium valve described in the utility model has five damping holes, structure is relatively simple, be difficult for to stop up, and the different damping hole plug in 5 damping holes, chocking-up degree is different, obstruction is different opportunity, the phenomenon of the failure showing is also incomplete same.Therefore maintain easily and repair.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Embodiment
Embodiment one
Plate type hydraulic equilibrium valve of the present utility model, by main valve plug 1, valve pocket 2, control piston 3, left end cap 4, valve body 5, one-way valve 6, little one-way valve 7 and right end cap 8, formed, one-way valve 6, main valve plug 1 and control piston 3 etc. are installed in valve body 5, actuator port of selector valve in the outer welding system of A hydraulic fluid port on it, B oil is connected with an oil pocket of oil hydraulic cylinder or oil hydraulic motor.Between valve pocket 2 in main valve plug 1 and valve body 5, can form one by zero aperture (locking) the variable restrictor passage to certain aperture, its axial center hole right-hand member is provided with a little one-way valve 7, on the valve body of little one-way valve 7, have a damping hole e who is communicated with main valve plug axial center hole and spring chamber, on the cylindric shoulder of right-hand member (also as spring seat) of main valve plug 1, be processed with a damping hole f, it is for being communicated with shoulder left side ring-type cavity volume with spring chamber; This ring-type cavity volume refers to the cavity being surrounded by the right side of shoulder left surface, the valve pocket 2, inner hole surface of valve body 5 etc., and its volume moves to right and increases with main valve plug l's.On control piston 3, be processed with axial damping hole b and damping hole d radially; Between main valve plug 1 and right end cap 8, spring is installed; On left end cap 4, be processed with the hydraulic fluid port C of axial damping hole a and connection oil hydraulic cylinder or another oil pocket of oil hydraulic motor.
Claims (1)
1. plate type hydraulic equilibrium valve, is characterized in that comprising valve body (5), and the left and right two ends of valve body (5) are respectively equipped with left end cap (4) and right end cap (8), and left end cap (4) is provided with damping hole (a); One-way valve (6), main valve plug (1) and control piston (3) are installed in valve body (5), and wherein main valve plug (1) is connected with valve body (5) by valve pocket (2); Main valve plug (1) inside offers axial center hole, between main valve plug (1) and right end cap (8), is provided with spring chamber, and spring chamber has the spring seat in supported spring chamber; The right-hand member of axial center hole is provided with little one-way valve (7), has a damping hole (e) that is communicated with main valve plug axial center hole and spring chamber on the valve body (5) of little one-way valve (7); In spring seat, be provided with a damping hole (f); On control piston (3), be processed with axial damping hole (b) and damping hole (d) radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631495.9U CN203548395U (en) | 2013-10-14 | 2013-10-14 | Plate-type hydraulic balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631495.9U CN203548395U (en) | 2013-10-14 | 2013-10-14 | Plate-type hydraulic balance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548395U true CN203548395U (en) | 2014-04-16 |
Family
ID=50466519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320631495.9U Expired - Fee Related CN203548395U (en) | 2013-10-14 | 2013-10-14 | Plate-type hydraulic balance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548395U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438545A (en) * | 2016-10-17 | 2017-02-22 | 浙江华益精密机械股份有限公司 | Load sensing type balance valve |
| CN107989840A (en) * | 2017-11-23 | 2018-05-04 | 宁波文泽机电技术开发有限公司 | A kind of damping control valve |
-
2013
- 2013-10-14 CN CN201320631495.9U patent/CN203548395U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438545A (en) * | 2016-10-17 | 2017-02-22 | 浙江华益精密机械股份有限公司 | Load sensing type balance valve |
| CN106438545B (en) * | 2016-10-17 | 2018-01-19 | 浙江华益精密机械股份有限公司 | Load-transducing type balanced valve |
| CN107989840A (en) * | 2017-11-23 | 2018-05-04 | 宁波文泽机电技术开发有限公司 | A kind of damping control 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: 20140416 Termination date: 20141014 |
|
| EXPY | Termination of patent right or utility model |