JPH0487522U - - Google Patents
Info
- Publication number
- JPH0487522U JPH0487522U JP40016590U JP40016590U JPH0487522U JP H0487522 U JPH0487522 U JP H0487522U JP 40016590 U JP40016590 U JP 40016590U JP 40016590 U JP40016590 U JP 40016590U JP H0487522 U JPH0487522 U JP H0487522U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- secondary side
- hydraulic
- supply means
- liquid
- 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
- 239000007788 liquid Substances 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Superstructure Of Vehicle (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
第１図は本考案に係る液圧拡管装置の一実施例
を示した構成図、第２図は従来の液圧拡管装置を
示した構成図、第３図はその拡管器を示した断面
図、第４図は従来における課題を説明するための
時間と圧力との関係図である。
図中、２は拡管器、３は増圧器、４は二次側圧
力保持手段、７は二次側液体供給手段、１５，４
１は油圧供給手段たる油圧供給路およびポンプ、
１７は切換手段たる第二の電磁弁、１８は第一の
圧力スイツチ、４２はタイマである。
Fig. 1 is a block diagram showing an embodiment of a hydraulic pipe expansion device according to the present invention, Fig. 2 is a block diagram showing a conventional hydraulic pipe expansion device, and Fig. 3 is a sectional view showing the pipe expander. , FIG. 4 is a diagram showing the relationship between time and pressure to explain the problems in the prior art. In the figure, 2 is a tube expander, 3 is a pressure intensifier, 4 is a secondary side pressure holding means, 7 is a secondary side liquid supply means, 15, 4
1 is a hydraulic pressure supply path and a pump serving as a hydraulic pressure supply means;
17 is a second electromagnetic valve as a switching means, 18 is a first pressure switch, and 42 is a timer.
Claims (1)
る拡管器と、一次側油圧で二次側液圧を増幅して
上記拡管器にその二次側の高圧の液体を供給する
ための増圧器と、該増圧器に一次側油圧を切換手
段を介して供給する油圧供給手段と、上記増圧器
の二次側に接続されその作動液体を供給するため
の二次側液体供給手段と、該二次側液体供給手段
に設けられ増幅された二次側液圧を保持する二次
側圧力保持手段と、上記油圧供給手段に設けられ
上記一次側が設定した圧力に達したときにこれを
感知する圧力スイツチと、該圧力スイツチの作動
で動作しその所定時間後に上記切換手段を油圧解
除側に切り換えさせるタイマとを備えたことを特
徴とする液圧拡管装置。 A pipe expander for expanding and crimping a pipe with a high-pressure liquid on a tube plate, and a pipe expander for amplifying the secondary side hydraulic pressure using the primary side hydraulic pressure and supplying the high-pressure liquid on the secondary side to the pipe expander. a pressure intensifier, a hydraulic pressure supply means for supplying primary side hydraulic pressure to the pressure intensifier via a switching means, a secondary side liquid supply means connected to the secondary side of the pressure intensifier for supplying its working fluid; a secondary side pressure holding means provided in the secondary side liquid supply means to hold the amplified secondary side liquid pressure; and a secondary side pressure holding means provided in the hydraulic pressure supply means to sense when the pressure reaches a set pressure on the primary side. 1. A hydraulic pipe expansion device comprising: a pressure switch; and a timer which is activated by the operation of the pressure switch and switches the switching means to the hydraulic release side after a predetermined time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40016590U JPH0487522U (en) | 1990-12-06 | 1990-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40016590U JPH0487522U (en) | 1990-12-06 | 1990-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0487522U true JPH0487522U (en) | 1992-07-29 |
Family
ID=31878455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40016590U Pending JPH0487522U (en) | 1990-12-06 | 1990-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0487522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020203513A (en) * | 2019-06-14 | 2020-12-24 | ヤンマーパワーテクノロジー株式会社 | Work vehicle |
-
1990
- 1990-12-06 JP JP40016590U patent/JPH0487522U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020203513A (en) * | 2019-06-14 | 2020-12-24 | ヤンマーパワーテクノロジー株式会社 | Work vehicle |
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