CN2274631Y - Manpower hydraulic jack - Google Patents
Manpower hydraulic jack Download PDFInfo
- Publication number
- CN2274631Y CN2274631Y CN 96229224 CN96229224U CN2274631Y CN 2274631 Y CN2274631 Y CN 2274631Y CN 96229224 CN96229224 CN 96229224 CN 96229224 U CN96229224 U CN 96229224U CN 2274631 Y CN2274631 Y CN 2274631Y
- Authority
- CN
- China
- Prior art keywords
- jack
- big
- utility
- model
- piston rod
- 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
Links
Images
Landscapes
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a full-hydraulic jack which can jack the weight to the preset height at one time. The utility model is characterized in that an oil cylinder is provided with two piston rods which are sheathed together to form annular chamber bodies. The two cavity bodies are provided with inner holes for communication. When a big piston rod is jacked up by hydraulic pressure, oil liquid is gradually squeezed into the cavity body of a small piston rod to enable the small piston rod to be upward climbed by the hydraulic pressure in order to complete the operation of jacking the weight at one time. The utility model has safety and the jacking time is shortened. Compared with the operation of secondary jacking and manual screwing of the prior jack, the utility model has an essential progress.
Description
The utility model relates to a kind of jack, the all-hydraulic jack of particularly a kind of manual type.
Current conduct hoist weight and widely used hand-hydraulic jack, as 5 tons of jacks, general Hydraulic for lifting load height is 125 millimeters, highly be 80 millimeters with the screw rod manual setting again, its principle is to force big piston to drive screw rod by oil pressure to rise, the jack-up weight, when piston rises to end position, when lifting is highly still not enough, then the weight support is padded up, turn on plug cock, allow piston get back to the home position, screw rod is back-outed puts in place again, repeats above-mentioned oil pressure process, make it jack-up weight once more, reach the desired location.Lifting weight one is dangerous like this, and two attachedly help the time longer, and work efficiency is not high.
The purpose of this utility model is will provide to twist by hand to carry screw rod, the full hydraulic jack that jacking weight puts in place.
The utility model is achieved in that and is provided with two piston rods of size in oil cylinder, comprise three of oil cylinders each self-forming annular chamber that is nested together, be marked with fluid in the chamber, big piston bar lower end has aperture, can be communicated with the small piston rod chamber, when big piston moves up the jack-up weight, fluid is pressed to the valve piston chamber thereupon gradually, valve piston also slowly rises, and all enters the valve piston chamber until fluid, and small piston rod stops jacking.Therefore need not manual operation again, just can once finish two joint jackings, lifting puts in place.
The utility model can be according to the lifting of real work needs height, minimum altitude, and considers the intensity of jack cylinder body and the stability that extension elongation allows, and just can arbitrarily design jack.When this jack used, non-cutting time was short, and jack-up weight of all-hydraulic two joints need not done other adjustment, and is safe and reliable, high efficiency.
Be described further again below in conjunction with accompanying drawing.
Accompanying drawing is the utility model cross-section structure schematic diagram of movements.
The utility model mainly is made up of small piston rod 1, big piston bar 2, oil cylinder 3, big inner chamber 4, endoporus 5, little inner chamber 6, oil drain plug 7, delivery valve 8, check valve 9 etc.As shown in the figure, be provided with two piston rods 1,2 of size in the oil cylinder 3, to hollow out in the middle of the big piston bar 2, form valve piston inner chamber 6, a big inner chamber 4 will be formed simultaneously between the inwall of oil cylinder 3 and the big piston bar 2, and below piston rod 2, be drilled with aperture 5, and be communicated with between two inner chambers 4,6 of size, fill with hydraulic oil by check valve 9 to big inner chamber 4.Delivery valve 8 is identical with existing jack with oil drain plug 7 and whole function mode.
When big piston bar 2 slowly made progress jack-up, owing to reducing of big inner chamber 4 spaces, fluid wherein was again incompressible, so the hydraulic oil in the little inner chamber 6 must be with valve piston 1 slow upwards jack-up.Along with moving up of big piston bar, the reducing of big inner chamber 4 spaces, the chamber inner fluid pours in the little inner chamber 6 by endoporus 5, and like this, small piston rod 1 just rises with the slow rise of big piston bar.After the fluid in the big inner chamber 4 all entered little inner chamber 6, small piston rod 1 just stopped upwards jack-up.
If the length that big small piston rod 1,2 is protruded upward is designed to 125 millimeters and 80 millimeters respectively, so big small piston rod just can highly be 205 millimeters by disposable jacking weight W.Like this, just do not need to back-out by hand again screw rod, adjusted the lifting height.If design objective is 5 tons of weight W of jack-up, but so big valve piston reaches designing requirement with regard to synchronization action.
Claims (4)
1. manual all-hydraulic jack, mainly form by oil cylinder (3), big piston bar (2), delivery valve (8), oil drain plug (7) etc., one big inner chamber (4) is arranged between oil cylinder (3) and the big piston bar (2), by hydraulic gear fluid is entered oil cylinder (3) through delivery valve, big piston bar (2) rises under pressure, jacking weight (W) is characterized in that: also have a small piston rod (1) in big piston bar (2).
2. jack according to claim 1 is characterized in that: between big piston bar (2) and small piston rod (1) little inner chamber (6) is arranged.
3. jack according to claim 1 is characterized in that: have aperture (5) in big piston bar (2) lower end.
4. jack according to claim 1 is characterized in that: be communicated with delivery valve (8) in big piston bar (2) bottom and located check valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96229224 CN2274631Y (en) | 1996-02-02 | 1996-02-02 | Manpower hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96229224 CN2274631Y (en) | 1996-02-02 | 1996-02-02 | Manpower hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2274631Y true CN2274631Y (en) | 1998-02-18 |
Family
ID=33906924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96229224 Expired - Fee Related CN2274631Y (en) | 1996-02-02 | 1996-02-02 | Manpower hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2274631Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109366951A (en) * | 2018-10-22 | 2019-02-22 | 滁州佳诚模具制造有限公司 | A kind of conveniently stripped case courage plastics suction mould |
-
1996
- 1996-02-02 CN CN 96229224 patent/CN2274631Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109366951A (en) * | 2018-10-22 | 2019-02-22 | 滁州佳诚模具制造有限公司 | A kind of conveniently stripped case courage plastics suction mould |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202000328U (en) | Pin-type lifting device with hydraulic cylinder jacking ring beam | |
| CN210559009U (en) | Four-cylinder jacking system of lifting tower | |
| CN201250085Y (en) | Tilting-type hydraulic elevator | |
| CN2274631Y (en) | Manpower hydraulic jack | |
| CN209585566U (en) | A kind of building outside climbing type CONSTRUCTION OPERATIONS platform | |
| CN218638253U (en) | Split type casing hydraulic shaping tool | |
| CN201420239Y (en) | Hydraulic locking mechanism | |
| CN206733369U (en) | Cleave rod assembly | |
| CN205917743U (en) | Excavator | |
| CN202081845U (en) | Assembled hydraulic tube drawing bench | |
| CN101761001B (en) | Multistage hydraulic cylinder track lifting and lining tool | |
| CN2615200Y (en) | Hydraulic pile hammer | |
| CN2307824Y (en) | Hydraulic pipe drawing device | |
| CN107161907A (en) | Lowering or hoisting gear with hydraulic booster | |
| CN207738382U (en) | A kind of multi-function hydraulic jack | |
| CN2246206Y (en) | Piston plunger-type extension hydrautic oil cylinder | |
| CN208980243U (en) | A kind of more piston jack | |
| CN207142730U (en) | A kind of room jack for vehicles | |
| CN110735431A (en) | hydrostatic pile press inclined pile construction method and dragon frame assembly | |
| CN207258509U (en) | A kind of side vertically jacks buried type garbage compression device | |
| CN206721681U (en) | Bridge pier building slip form self-lifting device | |
| CN2644745Y (en) | Step-by-step paralleled moved hydraulic translation device of land oil-well rig | |
| CN201099574Y (en) | Hydraulic escalator | |
| CN205895939U (en) | Special efficient speciality bearing puncher of bearing processing | |
| CN2296929Y (en) | Hydraulic oil pipe slip tongs |
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 |