JPS63152724U - - Google Patents
Info
- Publication number
- JPS63152724U JPS63152724U JP4621387U JP4621387U JPS63152724U JP S63152724 U JPS63152724 U JP S63152724U JP 4621387 U JP4621387 U JP 4621387U JP 4621387 U JP4621387 U JP 4621387U JP S63152724 U JPS63152724 U JP S63152724U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- pressure
- power source
- travel
- hydraulic power
- 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
- 238000013021 overheating Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Motor Power Transmission Devices (AREA)
Description
第１図は本考案の一実施例を示す油圧回路図、
第２図、第３図は従来のキヤビテーシヨン防止用
の走行用油圧回路図である。
２１，３１：油圧ポンプ、２２，２４Ａ，２４
Ｂ，２６Ａ，２６Ｂ，３２，３４，３６：管路、
２３：コントロールバルブ、２５：カウンタバラ
ンスバルブ、２７：走行モータ、２８：クロスオ
ーバリリーフバルブ、３０：タンク、３３：切換
弁、３５：減圧弁、３７：チエツク弁。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention;
FIGS. 2 and 3 are conventional traveling hydraulic circuit diagrams for preventing cavitation. 21, 31: Hydraulic pump, 22, 24A, 24
B, 26A, 26B, 32, 34, 36: pipe line,
23: control valve, 25: counter balance valve, 27: travel motor, 28: crossover relief valve, 30: tank, 33: switching valve, 35: pressure reducing valve, 37: check valve.
Claims (1)
る走行用油圧モータと、 キヤビテーシヨンおよび回路の過熱防止用の圧
油を吐出する第２の油圧源と、 前記走行用油圧モータの入口管路と前記第２の
油圧源との間に介装され、走行用油圧モータの入
口管路圧が前記第２の油圧源側の管路圧よりも低
いときにその第２の油圧源の圧油を前記入口管路
に流入させるチエツクバルブとを備えたことを特
徴とする走行用油圧モータの油圧回路。[Scope of Claim for Utility Model Registration] A first hydraulic power source for a travel hydraulic motor, a travel hydraulic motor driven by oil discharged from the first hydraulic power source, and pressure oil for preventing overheating of cavitation and circuits. a second hydraulic power source that discharges a hydraulic pressure; and a second hydraulic power source that is interposed between the inlet pipe of the travel hydraulic motor and the second hydraulic power source, and the inlet pipe pressure of the travel hydraulic motor is controlled by the second hydraulic power source. 1. A hydraulic circuit for a traveling hydraulic motor, comprising: a check valve that allows pressure oil from the second hydraulic pressure source to flow into the inlet pipe when the pressure is lower than the pressure in the second hydraulic pressure source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987046213U JPH0623463Y2 (en) | 1987-03-27 | 1987-03-27 | Hydraulic circuit for traveling hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987046213U JPH0623463Y2 (en) | 1987-03-27 | 1987-03-27 | Hydraulic circuit for traveling hydraulic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63152724U true JPS63152724U (en) | 1988-10-06 |
| JPH0623463Y2 JPH0623463Y2 (en) | 1994-06-22 |
Family
ID=30865670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987046213U Expired - Lifetime JPH0623463Y2 (en) | 1987-03-27 | 1987-03-27 | Hydraulic circuit for traveling hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623463Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523932U (en) * | 1978-08-03 | 1980-02-15 |
-
1987
- 1987-03-27 JP JP1987046213U patent/JPH0623463Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523932U (en) * | 1978-08-03 | 1980-02-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0623463Y2 (en) | 1994-06-22 |
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