CN201125893Y - Bidirectional balanced valve - Google Patents
Bidirectional balanced valve Download PDFInfo
- Publication number
- CN201125893Y CN201125893Y CNU2007201742451U CN200720174245U CN201125893Y CN 201125893 Y CN201125893 Y CN 201125893Y CN U2007201742451 U CNU2007201742451 U CN U2007201742451U CN 200720174245 U CN200720174245 U CN 200720174245U CN 201125893 Y CN201125893 Y CN 201125893Y
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- valve
- valve pocket
- valve body
- chamber
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Abstract
The utility model discloses as bidirectional balanced valve which belongs to the liquid balanced valve. The aim of the utility model is to provide a balanced valve which has the advantages of small volume, compact structure and stable operation. The bidirectional balanced valve comprises a valve body, two spill valves and one-way valves which are installed in the valve body. A pilot-controlled relief valve is composed of a thread sleeve (6) fixed on the valve body (1), a valve core (3) installed in the valve cavity, and a pressure regulating spring (7) which is installed between the valve core (3) and the thread sleeve (6). A control oil hole (12) which is provided in the valve core (3) is communicated with the valve cavity. The one-way valve is composed of a valve (5) installed in the valve cavity and a spring (4). The slidable push rod (2) which is installed in the sliding cavity separates the left valve cavity from the right valve cavity. Two ends of the push rod (2) are provided with pyramidal surfaces adapting with the opening of the control oil hole (12). The bidirectional balanced valve according to the utility model can be widely used in various hoisting devices.
Description
Technical field:
The utility model relates to a kind of hydraulic balance device of load-bearing machinery, relates in particular to a kind of hydraulically balanced valve that is used for tower crane.
Background technique:
Equilibrium valve is critical hydraulic element in the load-bearing machinery, and the quality of its performance directly has influence on machine performance.At present, because the spool of hydraulically balanced valve commonly used adopts cone structure mostly, so the servo-actuated of this valve and fine motion are relatively poor, also bad, the easy leakage of stability, and work the time shake, vibration or impact phenomenon can occur, has a strong impact on the safe operation of tower machine.In addition, one-way valve is with in relief valve is installed in different cavitys, and overall structure is more open, volume is bigger, installs also cumbersomely simultaneously, installs simultaneously about being unsuitable for.
Summary of the invention:
At the above-mentioned defective that exists in the prior art, the utility model aims to provide little, the compact structure of a kind of volume, the bidirectional balanced valve that operates steadily.
To achieve these goals, the utility model by the following technical solutions: it comprises valve body, be installed in two relief valves and one-way valve in this valve body; Be provided with left and right valve pocket in the valve body and with the sliding chamber that two valve pockets are communicated with, be located at that rod chamber hydraulic fluid port on the valve body is communicated with described left valve pocket, the rodless cavity hydraulic fluid port is communicated with described right valve chamber, a pilot relief valve and one-way valve respectively are housed in left and right valve pocket; Described pilot relief valve by be fixed on swivel nut on the valve body, be installed in the spool in the described valve pocket, the pressure adjusting spring that is installed between spool and the swivel nut constitutes, the control oilhole that is located in the spool is communicated with this valve pocket; Described one-way valve is made of the valve and the spring that are installed in the valve pocket; The one-way valve of a left side in the valve pocket with this valve pocket be located at that left oil port on the valve body separates, one-way valve in the right valve chamber separates this valve pocket and the right oil port that is located on the valve body; Being installed in the described sliding chamber slidably, push rod separates left and right valve pocket.
The two ends of push rod are provided with and control the suitable conical surface in oilhole aperture; On swivel nut, be provided with screw press.
Compared with the prior art, therefore the utility model can absorb impact effectively owing to adopted technique scheme, played overflow protective action preferably, and fretting performance is greatly improved also; In addition, because control valve and one-way valve are installed in the same valve pocket, so overall structure is compact.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view among Fig. 1;
Fig. 3 is a hydraulic schematic diagram of the present utility model.
Among the figure: valve body 1 push rod 2 spools 3 springs 4 valve 5 swivel nuts 6 pressure adjusting springs 7 lock nuts 8 screw press 9 right oil ports 10 rodless cavity hydraulic fluid ports 11 control oilholes 12 rod chamber hydraulic fluid ports 13 left oil ports 14 oil cylinders 15
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
In Fig. 1～2, be provided with coaxial left valve pocket, right valve chamber in the valve body 1, be provided with the sliding chamber that is communicated with it between two valve pockets, the left oil port 14 and the rod chamber hydraulic fluid port 13 that are located on the valve body 1 are communicated with described right valve chamber with right oil port 10 and the rodless cavity hydraulic fluid port 11 that described left valve pocket is communicated with, is located on the valve body 1.Slidably push rod 2 is installed in the described sliding chamber left valve pocket, right valve chamber is separated, and a pilot relief valve and an one-way valve respectively are housed in left valve pocket, right valve chamber.Described pilot relief valve by be fixed on the valve body 1 swivel nut 6 of valve pocket sealing, be installed in the spool 3 in this valve pocket, the pressure adjusting spring 7 that is installed between this spool and the swivel nut 6 constitutes, be located at spool 3 interior control oilholes 12 and be communicated with this valve pocket; One-way valve is made of the valve 5 and the spring 4 that are installed in the described valve pocket.Be located at that left oil port 14 on the valve body 1 and the passage between the left valve pocket separate, are located at right oil port 10 on the valve body 1 by the one-way valve in the left valve pocket and the passage between the right valve chamber is separated by the one-way valve in the right valve chamber; Slidably push rod 2 is installed in the described sliding chamber left valve pocket, right valve chamber is separated, and the two ends of push rod 2 are provided with and control the suitable conical surface in oilhole 12 apertures.In order to regulate pressure, on swivel nut 6, be provided with screw press 9; Loosening for fear of screw press 9, on this screw rod, also be provided with lock nut 8.Enter in the valve pocket for fear of foreign matter before use, a plug screw respectively is housed in right oil port 10 and the left oil port 14.
Working principle, as Fig. 1, shown in Figure 3: when the time from right oil port 10 oil-feeds, hydraulic oil is divided into two-way after entering right valve chamber: lead up to that the control oilhole 12 on the spool 3 backs down push rod 2 in the right valve chamber, the spool 3 that push rod 2 promotes in the left valve pocket is moved to the left, thereby the spool 3 in the left valve pocket is disengaged with valve 5 in this valve pocket, so the hydraulic oil in oil cylinder 15 rod chambers enters left valve pocket by rod chamber hydraulic fluid port 13, flow out by left oil port 14 then; Directly back down the valve in the right valve chamber 5 left on another road, enters the rodless cavity of oil cylinder 15 then by rodless cavity hydraulic fluid port 11.In like manner, when from left oil port 14 oil-feeds, hydraulic oil is divided into two-way after entering left valve pocket: lead up to that the control oilhole 12 on the spool 3 backs down push rod 2 in the left valve pocket, the spool 3 that push rod 2 promotes in the right valve chamber moves right, thereby the spool 3 in the right valve chamber is disengaged with valve 5 in this valve pocket, so the hydraulic oil in oil cylinder 15 rodless cavities enters right valve chamber by rodless cavity hydraulic fluid port 11, flow out by right oil port 10 then; Directly back down the valve in the left valve pocket 5 to the right on another road, enters the rod chamber of oil cylinder 15 then by rod chamber hydraulic fluid port 13.
Claims (3)
1. bidirectional balanced valve comprises valve body, is installed in two relief valves and one-way valve in this valve body; It is characterized in that: the sliding chamber that is provided with left and right valve pocket in the valve body (1) and two valve pockets are communicated with, be located at that rod chamber hydraulic fluid port (13) on the valve body (1) is communicated with described left valve pocket, rodless cavity hydraulic fluid port (11) is communicated with described right valve chamber, a pilot relief valve and one-way valve respectively are housed in left and right valve pocket; Described pilot relief valve by be fixed on swivel nut (6) on the valve body (1), be installed in the spool (3) in the described valve pocket, the pressure adjusting spring (7) that is installed between spool (3) and the swivel nut (6) constitutes, the control oilhole (12) that is located in the spool (3) is communicated with this valve pocket; Described one-way valve is made of the valve (5) and the spring (4) that are installed in the valve pocket; The one-way valve of a left side in the valve pocket with this valve pocket be located at that left oil port (14) on the valve body (1) separates, one-way valve in the right valve chamber separates this valve pocket and the right oil port (10) that is located on the valve body (1); Being installed in the described sliding chamber slidably, push rod (2) separates left and right valve pocket.
2. bidirectional balanced valve according to claim 1 is characterized in that: the two ends of push rod (2) are provided with and control the suitable conical surface in oilhole (12) aperture.
3. bidirectional balanced valve according to claim 1 and 2 is characterized in that: be provided with screw press (9) on swivel nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201742451U CN201125893Y (en) | 2007-11-29 | 2007-11-29 | Bidirectional balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201742451U CN201125893Y (en) | 2007-11-29 | 2007-11-29 | Bidirectional balanced valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125893Y true CN201125893Y (en) | 2008-10-01 |
Family
ID=39999362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201742451U Expired - Fee Related CN201125893Y (en) | 2007-11-29 | 2007-11-29 | Bidirectional balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125893Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956734A (en) * | 2010-10-21 | 2011-01-26 | 吴赛珍 | Balance speed regulating integrated valve |
| CN103615421A (en) * | 2013-11-28 | 2014-03-05 | 中国船舶重工集团公司第七○四研究所 | Large-drift-diameter balance valve |
| CN113898629A (en) * | 2021-09-22 | 2022-01-07 | 江苏汇智高端工程机械创新中心有限公司 | Brake control valve and bidirectional balance valve integrated with same |
| CN114484023A (en) * | 2022-01-17 | 2022-05-13 | 宁波威森搏乐机械制造有限公司 | Balance valve sensitive to control |
-
2007
- 2007-11-29 CN CNU2007201742451U patent/CN201125893Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956734A (en) * | 2010-10-21 | 2011-01-26 | 吴赛珍 | Balance speed regulating integrated valve |
| CN101956734B (en) * | 2010-10-21 | 2012-08-08 | 宁波广天赛克思液压有限公司 | Balance speed regulating integrated valve |
| CN103615421A (en) * | 2013-11-28 | 2014-03-05 | 中国船舶重工集团公司第七○四研究所 | Large-drift-diameter balance valve |
| CN103615421B (en) * | 2013-11-28 | 2016-03-02 | 中国船舶重工集团公司第七0四研究所 | A kind of Large-drift-diameterbalance balance valve |
| CN113898629A (en) * | 2021-09-22 | 2022-01-07 | 江苏汇智高端工程机械创新中心有限公司 | Brake control valve and bidirectional balance valve integrated with same |
| CN113898629B (en) * | 2021-09-22 | 2024-01-26 | 江苏汇智高端工程机械创新中心有限公司 | Brake control valve and bidirectional balance valve integrated with same |
| CN114484023A (en) * | 2022-01-17 | 2022-05-13 | 宁波威森搏乐机械制造有限公司 | Balance valve sensitive to control |
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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: 20081001 Termination date: 20131129 |