JPS6449704U - - Google Patents
Info
- Publication number
- JPS6449704U JPS6449704U JP14500487U JP14500487U JPS6449704U JP S6449704 U JPS6449704 U JP S6449704U JP 14500487 U JP14500487 U JP 14500487U JP 14500487 U JP14500487 U JP 14500487U JP S6449704 U JPS6449704 U JP S6449704U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- valve
- piston chamber
- piston
- shotless
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 claims 2
- 230000035939 shock Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図はこの考案にかかるパイロツト操作回路
図、第２図および第３図はこの考案にかかるパイ
ロツト操作回路の要部構成図、第４図は従来技術
のパイロツト操作回路図、第５図は従来技術回路
におけるパイロツト圧受圧部付近を示す構成図で
ある。
２，３，２０，２１……パイロツト弁、４，２
２……パイロツトポンプ、５，２３……パイロツ
ト切換弁、６，７，２４，２５……パイロツト圧
受圧部、８，９，２６，２７……シヨツクレス弁
、１２，３０……ばねキヤツプ部、１７，３５…
…バルブボデイ、１８，３６……遊動子、２８…
…セレクタ弁、３９……ピストン室、４０……ピ
ストン。
FIG. 1 is a pilot operating circuit diagram according to this invention, FIGS. 2 and 3 are main part configuration diagrams of the pilot operating circuit according to this invention, FIG. 4 is a pilot operating circuit diagram of the prior art, and FIG. FIG. 2 is a configuration diagram showing the vicinity of a pilot pressure receiving section in a conventional circuit. 2, 3, 20, 21... Pilot valve, 4, 2
2... Pilot pump, 5, 23... Pilot switching valve, 6, 7, 24, 25... Pilot pressure receiving part, 8, 9, 26, 27... Shockless valve, 12, 30... Spring cap part, 17,35...
...Valve body, 18, 36...Sweater, 28...
...Selector valve, 39...Piston chamber, 40...Piston.
Claims (1)
するばねキヤツプ部にシヨツクレス弁を組込み、
パイロツト信号圧力により切換作動する上記パイ
ロツト切換弁のパイロツト圧受圧部と、パイロツ
ト信号圧力を発生させるパイロツト弁とを上記シ
ヨツクレス弁を介して連通した建設機械用パイロ
ツト操作回路において、上記シヨツクレス弁のバ
ルブボデイ内部にピストン室を設け、そのピスト
ン室内にピストンを摺動可能に嵌合し、一方、パ
イロツトポンプと上記ピストン室とをセレクタ弁
を介して連通するとともに、上記セレクタ弁の切
換操作によりバルブボデイ内のシヨツク緩和用遊
動子を上記ピストンにてロツク可能に構成したこ
とを特徴とする建設機械のパイロツト操作回路。 A shock valve is incorporated into the spring cap that forms the pilot pressure receiving part of the pilot switching valve.
In a pilot operating circuit for construction machinery, in which a pilot pressure receiving part of the pilot switching valve that is switched by pilot signal pressure and a pilot valve that generates the pilot signal pressure are communicated via the shotless valve, the inside of the valve body of the shotless valve is connected. A piston chamber is provided in the piston chamber, and a piston is slidably fitted into the piston chamber. On the other hand, the pilot pump and the piston chamber are communicated through a selector valve. A pilot operation circuit for a construction machine, characterized in that a relaxation idler is configured to be lockable by the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14500487U JPS6449704U (en) | 1987-09-22 | 1987-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14500487U JPS6449704U (en) | 1987-09-22 | 1987-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6449704U true JPS6449704U (en) | 1989-03-28 |
Family
ID=31413211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14500487U Pending JPS6449704U (en) | 1987-09-22 | 1987-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6449704U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01163201U (en) * | 1988-05-09 | 1989-11-14 |
-
1987
- 1987-09-22 JP JP14500487U patent/JPS6449704U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01163201U (en) * | 1988-05-09 | 1989-11-14 |