CN2695427Y - Hydraulic automatic lifting jack - Google Patents
Hydraulic automatic lifting jack Download PDFInfo
- Publication number
- CN2695427Y CN2695427Y CN 200420040710 CN200420040710U CN2695427Y CN 2695427 Y CN2695427 Y CN 2695427Y CN 200420040710 CN200420040710 CN 200420040710 CN 200420040710 U CN200420040710 U CN 200420040710U CN 2695427 Y CN2695427 Y CN 2695427Y
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- CN
- China
- Prior art keywords
- oil pump
- high pressure
- oil
- hydraulic
- pressure
- 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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Abstract
The utility model relates to a hydraulic automatic lifting jack, belonging to the technical field of hydraulic pressure up-down tools. Prior hydraulic jack has high volume, complicated structure, complicated operation, less elevating capacity, and limited range of use. The technical proposal of the utility model is that a hydraulic cylinder 1 is provided with a plunger piston 8 inside, and the hydraulic cylinder is connected with an oil tank 7 and communicated with an oil return hole 10, and the lower part of the plunger piston 8 is provided with an escape valve 9, and the oil tank 7 is provided with a high pressure oil pump 4 inside; one end of a high pressure duct 5 is connected with the oil outlet of the high pressure oil pump 4, and the other end of the pressure duct 5 is connected with the hydraulic cylinder 1; the pressure duct 5 is connected with a relief valve 6, and power source 2 is fixed outside of the oil tank. An actuating device 3 connected with the power source 2 is contacted with the plunger piston of the high pressure oil pump 4, and the oil inlet 11 of the high pressure oil pump 4 is arranged inside of the oil tank 7. The utility model has the advantages of simple structure, small volume, light weight, good entirety property, convenient movement, simple operation, high functional reliability, less intensity of labor for workers.
Description
Technical field: the utility model relates to a kind of hydraulic lifting instrument, is the automatic jack of a kind of fluid pressure type more specifically
Background technology: the fluid pressure type jack volume that uses is big at present, complex structure, and complicated operation, hoisting capacity is little, and range of use is limited.
Summary of the invention: for overcoming above-mentioned shortcoming, the purpose of this utility model is the automatic jack of a kind of fluid pressure type of design.Its technical scheme is: be provided with plunger 8 in the hydraulic actuating cylinder 1, hydraulic actuating cylinder 1 connects fuel tank 7 and has fuel return hole 10 to communicate, and plunger 8 bottoms are provided with safety valve 9, and high-pressure oil pump 4 is arranged in the fuel tank 7; Pressure duct 5 one ends connect the oil outlet of oil pump 4, and its other end connects hydraulic actuating cylinder 1; Be connected with unloader valve 6 on pressure duct 5, propulsion source 2 is fixed on outside the fuel tank 7, contacts with high-pressure oil pump 4 plungers with propulsion source 2 bonded assembly drivings device 3, and the fuel feed hole 11 of high-pressure oil pump 4 is arranged in the fuel tank 7.The advantage of this utility model is: simple in structure, volume is little, and is in light weight, and overall performance is good, and conveniently moving is simple to operate, and the functional reliability height reduces people's labour intensity, and range of use is wide.
Description of drawings: Fig. 1 front view, Fig. 2 birds-eye view.In the accompanying drawing: 1, hydraulic actuating cylinder, 2, propulsion source, 3, driving device, 4, high-pressure oil pump, 5, pressure duct, 6, unloader valve, 7, fuel tank, 8, plunger, 9, safety valve, 10, fuel return hole, 11, fuel feed hole.
The specific embodiment: be provided with plunger 8 in the hydraulic actuating cylinder 1, hydraulic actuating cylinder 1 connects fuel tank 7 and has fuel return hole 10 to communicate, and plunger 8 bottoms are provided with safety valve 9, and high-pressure oil pump 4 is arranged in the fuel tank 7; Pressure duct 5 one ends connect the oil outlet of oil pump 4, and its other end connects hydraulic actuating cylinder 1; Be connected with unloader valve 6 on pressure duct 5, propulsion source 2 is fixed on outside the fuel tank 7, contacts with high-pressure oil pump 4 plungers with propulsion source 2 bonded assembly drivings device 3, and the fuel feed hole 11 of high-pressure oil pump 4 is arranged in the fuel tank 7; After propulsion source 2 runnings, driving device 3 is given high-pressure oil pump 4 with transmission of power, and high-pressure oil pump 4 output high pressure oils are delivered to hydraulic actuating cylinder 1 by pressure duct 5, and plunger 8 is risen.After work was finished, operation unloader valve 6 utilized the gravity off-load, makes oil be back to fuel tank 7.
Claims (1)
1, the automatic jack of a kind of fluid pressure type is characterized in that: be provided with plunger (8) in the hydraulic actuating cylinder (1), hydraulic actuating cylinder (1) connects fuel tank (7) and has fuel return hole (10) to communicate, and plunger (8) bottom is provided with safety valve (9), and high-pressure oil pump (4) is arranged in the fuel tank (7); Pressure duct (5) one ends connect the oil outlet of oil pump (4), and its other end connects hydraulic actuating cylinder (1); Be connected with unloader valve (6) on pressure duct (5), propulsion source (2) is fixed on outside the fuel tank (7), contacts with high-pressure oil pump (4) plunger with propulsion source (2) bonded assembly driving device (3), and the fuel feed hole (11) of high-pressure oil pump (4) is arranged in the fuel tank (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420040710 CN2695427Y (en) | 2004-05-21 | 2004-05-21 | Hydraulic automatic lifting jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420040710 CN2695427Y (en) | 2004-05-21 | 2004-05-21 | Hydraulic automatic lifting jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695427Y true CN2695427Y (en) | 2005-04-27 |
Family
ID=34774422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420040710 Expired - Fee Related CN2695427Y (en) | 2004-05-21 | 2004-05-21 | Hydraulic automatic lifting jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695427Y (en) |
-
2004
- 2004-05-21 CN CN 200420040710 patent/CN2695427Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |