JPH02134303U - - Google Patents
Info
- Publication number
- JPH02134303U JPH02134303U JP4197289U JP4197289U JPH02134303U JP H02134303 U JPH02134303 U JP H02134303U JP 4197289 U JP4197289 U JP 4197289U JP 4197289 U JP4197289 U JP 4197289U JP H02134303 U JPH02134303 U JP H02134303U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- regeneration circuit
- head chamber
- pilot
- 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
- 230000008929 regeneration Effects 0.000 claims 6
- 238000011069 regeneration method Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
第１図は本考案の実施例を示す構成説明図であ
る。
１はポンプ、２は操作弁、４はシリンダー、４
ａはボトム室、４ｂはヘツド室、１０はロードチ
エツク弁、１１はスプール弁、２０はスプール、
２５は切換弁、３０は開閉弁、４０はパイロツト
管路、４２はパイロツト弁。
FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention. 1 is a pump, 2 is an operating valve, 4 is a cylinder, 4
a is a bottom chamber, 4b is a head chamber, 10 is a load check valve, 11 is a spool valve, 20 is a spool,
25 is a switching valve, 30 is an on-off valve, 40 is a pilot pipe, and 42 is a pilot valve.
Claims (1)
ボトム室４ａとヘツド室４ｂに供給制御すると共
に、そのボトム室４ａとヘツド室４ｂを再生回路
で短絡し、該再生回路に、ボトム室４ａ側からヘ
ツド室４ｂ側への流通を阻止するロードチエツク
弁１０及び、再生回路を連通・遮断するポペツト
弁１１並びに再生回路のヘツド室側をタンク側に
連通・遮断する開閉弁３０、ヘツド室内の圧油が
流入するパイロツト管路４０および外部信号によ
つてパイロツト管路４０をタンク側に連通するパ
イロツト弁４２を設け、前記ポペツト弁１１をパ
イロツト弁４２の開度によつて開口し再生回路を
連通する構造とし、前記開閉弁３０をパイロツト
管路４０内のパイロツト圧が設定圧力以下なると
再生回路のヘツド室側をタンクに連通する構造と
し、 前記パイロツト管路４０に、前記ボトム圧力が
設定圧力以上となるとパイロツト管路４０をタン
ク側に連通する切換弁２５を設けたことを特徴と
する油圧回路。[Claims for Utility Model Registration] Controlling the supply of pressure oil from the pump 1 to the bottom chamber 4a and head chamber 4b of the cylinder 4 using the operation valve 2, and short-circuiting the bottom chamber 4a and the head chamber 4b with a regeneration circuit, The regeneration circuit includes a load check valve 10 that prevents flow from the bottom chamber 4a side to the head chamber 4b side, a poppet valve 11 that connects and disconnects the regeneration circuit, and connects and disconnects the head chamber side of the regeneration circuit to the tank side. A pilot pipe 40 into which the pressure oil in the head chamber flows, and a pilot valve 42 which communicates the pilot pipe 40 with the tank side in response to an external signal are provided. The opening/closing valve 30 is structured to open and communicate with the regeneration circuit by opening the pilot pipe 40, and the opening/closing valve 30 is structured to communicate the head chamber side of the regeneration circuit with the tank when the pilot pressure in the pilot pipe 40 becomes lower than a set pressure. A hydraulic circuit characterized in that a switching valve 25 is provided which connects the pilot pipe line 40 to the tank side when the bottom pressure exceeds a set pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989041972U JP2520929Y2 (en) | 1989-04-12 | 1989-04-12 | Hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989041972U JP2520929Y2 (en) | 1989-04-12 | 1989-04-12 | Hydraulic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02134303U true JPH02134303U (en) | 1990-11-07 |
| JP2520929Y2 JP2520929Y2 (en) | 1996-12-18 |
Family
ID=31553103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989041972U Expired - Lifetime JP2520929Y2 (en) | 1989-04-12 | 1989-04-12 | Hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520929Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018145726A (en) * | 2017-03-07 | 2018-09-20 | 住友重機械工業株式会社 | Shovel |
| CN109058191A (en) * | 2018-10-30 | 2018-12-21 | 中冶赛迪工程技术股份有限公司 | A kind of plug support frame quick pressure releasing control loop |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56115002U (en) * | 1980-02-06 | 1981-09-03 |
-
1989
- 1989-04-12 JP JP1989041972U patent/JP2520929Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56115002U (en) * | 1980-02-06 | 1981-09-03 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018145726A (en) * | 2017-03-07 | 2018-09-20 | 住友重機械工業株式会社 | Shovel |
| CN109058191A (en) * | 2018-10-30 | 2018-12-21 | 中冶赛迪工程技术股份有限公司 | A kind of plug support frame quick pressure releasing control loop |
| CN109058191B (en) * | 2018-10-30 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Quick pressure release control loop of plug support frame |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2520929Y2 (en) | 1996-12-18 |
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