JPS61191501U - - Google Patents
Info
- Publication number
- JPS61191501U JPS61191501U JP7597785U JP7597785U JPS61191501U JP S61191501 U JPS61191501 U JP S61191501U JP 7597785 U JP7597785 U JP 7597785U JP 7597785 U JP7597785 U JP 7597785U JP S61191501 U JPS61191501 U JP S61191501U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- oil
- casing
- oil passage
- chamber
- Prior art date
- 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.)
- Granted
Links
- 239000003921 oil Substances 0.000 claims 9
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図および第２図は本考案の実施例によるブ
レーキ弁を示し、第１図はその縦断面図、第２図
は第１図中に示す一方のチエツク弁の作動状態を
示す要部断面図、第３図ないし第５図は従来技術
に係り、第３図は油圧回路図、第４図は第３図中
に示すブレーキ弁の縦断面図、第５図は第４図中
に示す一方のチエツク弁の作動状態を示す要部断
面図である。
１…油圧モータ、２…慣性体、４…方向切換弁
、５…油圧ポンプ、６…タンク、７…カウンタバ
ランス弁、８Ａ，８Ｂ…チエツク弁、１０…ケー
シング、２６Ａ，２６Ｂ…弁室、２９Ａ，２９Ｂ
…ばね、３０Ａ，３０Ｂ…弁座、３１Ａ，３１Ｂ
…油通路、４１Ａ，４１Ｂ…ポペツト弁体、４２
Ａ，４２Ｂ…ばね室、４３Ａ，４３Ｂ…連通路。
1 and 2 show a brake valve according to an embodiment of the present invention, FIG. 1 is a longitudinal sectional view thereof, and FIG. 2 is a sectional view of a main part showing the operating state of one of the check valves shown in FIG. 1. 3 to 5 relate to the prior art, FIG. 3 is a hydraulic circuit diagram, FIG. 4 is a vertical sectional view of the brake valve shown in FIG. 3, and FIG. 5 is shown in FIG. 4. FIG. 3 is a sectional view of a main part showing the operating state of one check valve. DESCRIPTION OF SYMBOLS 1...Hydraulic motor, 2...Inertial body, 4...Directional switching valve, 5...Hydraulic pump, 6...Tank, 7...Counter balance valve, 8A, 8B...Check valve, 10...Casing, 26A, 26B...Valve chamber, 29A ,29B
...Spring, 30A, 30B...Valve seat, 31A, 31B
...Oil passage, 41A, 41B...Poppet valve body, 42
A, 42B...Spring chamber, 43A, 43B...Communication path.
Claims (1)
れぞれ一端がアクチユエータ側と接続され、他端
が油圧源側と接続される一対の油通路と、該各油
通路の途中に設けられたカウンタバランス弁と、
前記油通路の途中に設けられ、前記油圧源側から
アクチユエータ側に向けて作動油の流通を許す一
対のチエツク弁とからなるブレーキ弁において、
前記各チエツク弁を、前記各油通路の途中に設け
られた弁座と、該弁座に対向するように前記ケー
シングに形成された弁室と、該弁室内に摺動可能
に挿嵌され、一端側が前記弁座に離着座すること
により前記各油通路をアクチユエータ側油路と油
圧源側油路とに画成するポペツト弁体と、該ポペ
ツト弁体の他端側と前記弁室との間で画成される
ばね室内に配設され、該ポペツト弁体を弁座方向
に付勢するばねと、前記アクチユエータ側油路と
ばね室とを連通させるように前記ケーシングに形
成した連通路とから構成したことを特徴とするブ
レーキ弁。 a casing, a pair of oil passages provided within the casing, each having one end connected to an actuator side and the other end connected to a hydraulic power source side, and a counterbalance valve provided in the middle of each oil passage;
A brake valve comprising a pair of check valves provided in the middle of the oil passage and allowing flow of hydraulic oil from the oil pressure source side toward the actuator side,
Each of the check valves is slidably inserted into a valve seat provided in the middle of each of the oil passages, a valve chamber formed in the casing so as to face the valve seat, and the valve chamber, A poppet valve body whose one end side separates from and seats on the valve seat to define each of the oil passages into an actuator side oil passage and a hydraulic power source side oil passage, and the other end side of the poppet valve body and the valve chamber. a spring disposed in a spring chamber defined between the spring chamber and biasing the poppet valve body toward the valve seat; and a communication passage formed in the casing so as to communicate the actuator side oil passage with the spring chamber. A brake valve comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7597785U JPH0341131Y2 (en) | 1985-05-22 | 1985-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7597785U JPH0341131Y2 (en) | 1985-05-22 | 1985-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61191501U true JPS61191501U (en) | 1986-11-28 |
| JPH0341131Y2 JPH0341131Y2 (en) | 1991-08-29 |
Family
ID=30617690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7597785U Expired JPH0341131Y2 (en) | 1985-05-22 | 1985-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341131Y2 (en) |
-
1985
- 1985-05-22 JP JP7597785U patent/JPH0341131Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0341131Y2 (en) | 1991-08-29 |
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