JPS61112062U - - Google Patents
Info
- Publication number
- JPS61112062U JPS61112062U JP19603584U JP19603584U JPS61112062U JP S61112062 U JPS61112062 U JP S61112062U JP 19603584 U JP19603584 U JP 19603584U JP 19603584 U JP19603584 U JP 19603584U JP S61112062 U JPS61112062 U JP S61112062U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- circuit
- work equipment
- pressure
- equipment circuit
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
第１図は本考案のホイルローダの油圧回路を示
す回路図、第２図は第１図に示す油圧回路の作業
機回路における圧力―流量特性を示す特性図、第
３図は従来のホイルローダの油圧回路を示す回路
図である。
１１……第１のポンプ、１２……第２のポンプ
、１３……ステアリングバルブ、１４……バケツ
ト操作バルブ、１５……アーム操作バルブ、１６
……フローデイバイダ、１７……切換弁、１８…
…ステアリングミリンダ、１９……バケツトシリ
ンダ、２０……アームシリンダ、２１ａ，２１ｂ
……リリーフバルブ、２１ｃ……チエツク弁。
Fig. 1 is a circuit diagram showing the hydraulic circuit of the wheel loader of the present invention, Fig. 2 is a characteristic diagram showing the pressure-flow characteristics in the working machine circuit of the hydraulic circuit shown in Fig. 1, and Fig. 3 is the hydraulic pressure of the conventional wheel loader. FIG. 2 is a circuit diagram showing a circuit. 11...First pump, 12...Second pump, 13...Steering valve, 14...Bucket operation valve, 15...Arm operation valve, 16
...Flow divider, 17...Switching valve, 18...
... Steering mill cylinder, 19 ... Bucket cylinder, 20 ... Arm cylinder, 21a, 21b
...Relief valve, 21c...Check valve.
Claims (1)
イルローダの油圧回路において、第１のポンプと
第２のポンプとを設け、第１のポンプをフローデ
イバイダを介して上記ステアリング回路及び作業
機回路の双方に連結可能に設け、第２のポンプを
作業機回路に連結するとともに、フローデイバイ
ダと作業機回路との間に、第１のポンプから作業
機回路への圧油の流れを規制する切換弁を設けた
ことを特徴とするホイルローダの油圧回路。 ２ 切換弁は、作業機回路の圧力により切換わり
、圧力の低いときはフローデイバイダからの油を
作業機回路に合流させ、圧力の高いときはタンク
へ戻すことを特徴とする実用新案登録請求の範囲
第１項記載のホイルローダの油圧回路。[Claims for Utility Model Registration] 1. In a hydraulic circuit for a wheel loader equipped with a steering circuit and a work equipment circuit, a first pump and a second pump are provided, and the first pump is connected to the above-mentioned pump through a flow divider. The second pump is connected to the work equipment circuit, and the pressure from the first pump to the work equipment circuit is connected between the flow divider and the work equipment circuit. A hydraulic circuit for a wheel loader characterized by being equipped with a switching valve that regulates the flow of oil. 2 Request for registration of a utility model characterized in that the switching valve is switched depending on the pressure of the work equipment circuit, and when the pressure is low, the oil from the flow divider is merged into the work equipment circuit, and when the pressure is high, it is returned to the tank. The hydraulic circuit of the wheel loader according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19603584U JPS61112062U (en) | 1984-12-26 | 1984-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19603584U JPS61112062U (en) | 1984-12-26 | 1984-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61112062U true JPS61112062U (en) | 1986-07-15 |
Family
ID=30753676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19603584U Pending JPS61112062U (en) | 1984-12-26 | 1984-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61112062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006103892A (en) * | 2004-10-06 | 2006-04-20 | Kayaba Ind Co Ltd | Negative control circuit for industrial machine |
-
1984
- 1984-12-26 JP JP19603584U patent/JPS61112062U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006103892A (en) * | 2004-10-06 | 2006-04-20 | Kayaba Ind Co Ltd | Negative control circuit for industrial machine |
| JP4601377B2 (en) * | 2004-10-06 | 2010-12-22 | カヤバ工業株式会社 | Negative control circuit for industrial machinery |
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