JPH0434429U - - Google Patents
Info
- Publication number
- JPH0434429U JPH0434429U JP7527690U JP7527690U JPH0434429U JP H0434429 U JPH0434429 U JP H0434429U JP 7527690 U JP7527690 U JP 7527690U JP 7527690 U JP7527690 U JP 7527690U JP H0434429 U JPH0434429 U JP H0434429U
- Authority
- JP
- Japan
- Prior art keywords
- discharge pipe
- hydraulic motor
- hydraulic
- relief valve
- reservoir
- 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
- 238000001816 cooling Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は、本考案における一実施例としての冷
却フアンの油圧駆動装置をシステム図によつて示
し、第２図は、本考案における他の実施例として
の冷却フアンの油圧駆動装置をシステム図によつ
て示し、第３図は、従来における冷却フアンの油
圧駆動装置をシステム図によつて示したものであ
る。
実施例に使用した符号は下記のとおりである。
１……油圧ポンプ、２……油圧モータ、２ａ…
…冷却フアン、３および８……リリーフ弁、３ｂ
……パイロツト戻り管路、４……エンジン、５…
…放熱器、６……リザーバ、７……背圧弁、９…
…オン・オフ弁。
FIG. 1 shows a system diagram of a hydraulic drive device for a cooling fan as an embodiment of the present invention, and FIG. 2 shows a system diagram of a hydraulic drive device for a cooling fan as another embodiment of the present invention. FIG. 3 is a system diagram showing a conventional hydraulic drive device for a cooling fan. The symbols used in the examples are as follows. 1...Hydraulic pump, 2...Hydraulic motor, 2a...
...Cooling fan, 3 and 8...Relief valve, 3b
...Pilot return line, 4...Engine, 5...
...Radiator, 6...Reservoir, 7...Back pressure valve, 9...
...On/off valve.
Claims (1)
の吐出圧油によつて駆動される油圧モータは、そ
のエンジンの冷却水を冷却するラジエータ用のフ
アンを駆動し、その油圧モータにおける圧油吐出
管路は放熱器を介してリザーバに連通している構
成において、 前記油圧モータの吐出管路と前記リザーバとの
間に背圧弁を介設したことを特徴とする冷却フア
ンの油圧駆動装置。 ２ 油圧ポンプの吐出管路と油圧モータの吐出管
路との間にはリリーフ弁を介設し、そのリリーフ
弁におけるパイロツト戻り管路をリザーバへ連通
させた請求項１記載の冷却フアンの油圧駆動装置
。 ３ エンジンによつて駆動される油圧ポンプから
の吐出圧油によつて駆動される油圧モータは、そ
のエンジンの冷却水を冷却するラジエータ用のフ
アンを駆動し、その油圧モータにおける圧油吐出
管路は放熱器を介してリザーバに連通している構
成において、 前記油圧ポンプの吐出管路と前記油圧モータの
吐出管路との間に介設させた第１のリリーフ弁の
パイロツト戻り管路と、リザーバとの間に第２の
リリーフ弁を介設し、その第２のリリーフ弁と並
列に設けたオン・オフ弁は、前記冷却水の水温に
関連の温度が所定の温度以上において閉となり、
その水温がその所定の温度以下であるとき開とな
る構成となつている冷却フアンの油圧駆動装置。[Claims for Utility Model Registration] 1. A hydraulic motor driven by pressure oil discharged from a hydraulic pump driven by an engine drives a fan for a radiator that cools the cooling water of the engine. A cooling fan characterized in that a pressure oil discharge pipe in the hydraulic motor is in communication with a reservoir via a radiator, and a back pressure valve is interposed between the discharge pipe of the hydraulic motor and the reservoir. Hydraulic drive system. 2. Hydraulic drive of a cooling fan according to claim 1, wherein a relief valve is interposed between the discharge pipe of the hydraulic pump and the discharge pipe of the hydraulic motor, and the pilot return pipe of the relief valve is communicated with the reservoir. Device. 3 A hydraulic motor driven by pressure oil discharged from a hydraulic pump driven by an engine drives a fan for a radiator that cools cooling water of the engine, and a pressure oil discharge pipe in the hydraulic motor communicates with a reservoir via a radiator, a pilot return pipe of a first relief valve interposed between a discharge pipe of the hydraulic pump and a discharge pipe of the hydraulic motor; A second relief valve is interposed between the reservoir and the on/off valve provided in parallel with the second relief valve, which closes when a temperature related to the cooling water temperature is equal to or higher than a predetermined temperature;
A hydraulic drive device for a cooling fan configured to open when the water temperature is below a predetermined temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7527690U JPH0748979Y2 (en) | 1990-07-17 | 1990-07-17 | Hydraulic drive for cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7527690U JPH0748979Y2 (en) | 1990-07-17 | 1990-07-17 | Hydraulic drive for cooling fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0434429U true JPH0434429U (en) | 1992-03-23 |
| JPH0748979Y2 JPH0748979Y2 (en) | 1995-11-13 |
Family
ID=31615716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7527690U Expired - Lifetime JPH0748979Y2 (en) | 1990-07-17 | 1990-07-17 | Hydraulic drive for cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0748979Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905881A (en) * | 2017-11-22 | 2018-04-13 | 徐工集团工程机械有限公司 | A kind of engineering machinery hydraulic independence cooling system |
-
1990
- 1990-07-17 JP JP7527690U patent/JPH0748979Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905881A (en) * | 2017-11-22 | 2018-04-13 | 徐工集团工程机械有限公司 | A kind of engineering machinery hydraulic independence cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0748979Y2 (en) | 1995-11-13 |
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