CN2194350Y - High-effect hydraulic jack - Google Patents
High-effect hydraulic jack Download PDFInfo
- Publication number
- CN2194350Y CN2194350Y CN 94202872 CN94202872U CN2194350Y CN 2194350 Y CN2194350 Y CN 2194350Y CN 94202872 CN94202872 CN 94202872 CN 94202872 U CN94202872 U CN 94202872U CN 2194350 Y CN2194350 Y CN 2194350Y
- Authority
- CN
- China
- Prior art keywords
- jack
- plunger
- hole
- valve
- oil
- 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.)
- Expired - Fee Related
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- Types And Forms Of Lifts (AREA)
Abstract
The utility model relates to a highly efficient hydraulicjack. The utility model is characterized in that a plunger whose center is a through hole is arranged on the center of the base of a jack, and a piston rod is fabricated to be hollow to form a quick-lifting oil cylinder; besides, a sequence valve and a spring is respectively arranged between the through hole of the plunger and a main oil cylinder and between the through hole of the plunger and an oil return valve, and a one way oil filling valve is arranged between the main oil cylinder and an oil sump; thus, a set of zero load quick-lifting device is formed. The zero load rising speed of the jack can be increased by more than 10 times; thus, the work efficiency of the jack is improved, and the operation of the jack is the same with the operation of the jack not jet improved.
Description
The utility model relates to a kind of efficient hydraulic jack.
Existing efficient hydraulic jack such as CN2051993U one double speed plunger oil jack; CN2061169U one hydraulic pressure automatic speed regulation jack; CN2090371U one double pump hydraulic jack; CN2107454U one underloading rises hydraulic jack soon, all is by the improvement of pump being realized that efficiently it raises the efficiency limitedly, and structure is complicated.
The purpose of this utility model is with bigger the raising the efficiency of simple structure.
The purpose of this utility model is achieved in that at jack base center addition one center be the plunger of through hole, piston rod is made hollow, constitute a fast oil-lifting jar, and between plunger through hole, master cylinder, fuel-return valve addition sequence valve and spring, addition one unidirectional inlet valve between master cylinder and oil sump constitutes the unloaded device that rises soon of a cover again.
Accompanying drawing is the structural representation of efficient hydraulic jack, screw fuel-return valve cock 1 during work earlier, hold out against fuel-return valve 2, sealed the loop of master cylinder 8, hold out against spring 3 and sequence valve 4 simultaneously, this moment, sequence valve was in running order, when jack is unloaded, in the pressure oil of manual pump output enters piston rod 7 hollow along the centre hole of plunger 6, piston rod 7 fast rise, the oil of oil sump is inhaled in the master cylinder 8 from check valve 5 simultaneously, when the jack load, pressure oil backs down sequence valve 4 and enters master cylinder 8, and this moment, the work of jack was preceding the same with improvement, unclamped the oil return cock, fuel-return valve 2, spring 3, sequence valve 4 unclamps entirely, the loop all-pass is reduced to low level at gravity or manpower effect lower piston rod, finishes a cycle of operations.
The utility model is simple in structure improve unloaded ascending velocity operate more than 10 times with improve before the same, practical value is greatly arranged.
Claims (1)
1, a kind of zero load effect hydraulic jack that raises soon, its principal character is to put the plunger that a center is a through hole at the jack base center, piston rod is made hollow, constitute a fast oil-lifting jar, and at plunger through hole and master cylinder, put a sequence valve and spring between fuel-return valve and constitute a controlled sequence valve, between master cylinder and oil sump, put a unidirectional inlet valve again, formed the unloaded device that rises soon of a cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202872 CN2194350Y (en) | 1994-02-03 | 1994-02-03 | High-effect hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202872 CN2194350Y (en) | 1994-02-03 | 1994-02-03 | High-effect hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2194350Y true CN2194350Y (en) | 1995-04-12 |
Family
ID=33822528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94202872 Expired - Fee Related CN2194350Y (en) | 1994-02-03 | 1994-02-03 | High-effect hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2194350Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996022937A1 (en) * | 1995-01-28 | 1996-08-01 | Shinn Hua (China) Machinery Co., Ltd. | Control unit for hand-operated hydraulic jack |
-
1994
- 1994-02-03 CN CN 94202872 patent/CN2194350Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996022937A1 (en) * | 1995-01-28 | 1996-08-01 | Shinn Hua (China) Machinery Co., Ltd. | Control unit for hand-operated hydraulic jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: LIU ZONGQI TO: XINHUA (CHINA) MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 529200 No. 328 Lake Bridge Road, Guangdong, Taishan Patentee after: Xinhua (Chinese) Machinery Co. Ltd. Address before: 100035 Beijing Xicheng District Xizhimen Jiang Fang No. 4 compound Patentee before: Liu Zongqi |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |