CN201221509Y - Ultra-high hydraulic double-acting mechanical locking oil cylinder - Google Patents
Ultra-high hydraulic double-acting mechanical locking oil cylinder Download PDFInfo
- Publication number
- CN201221509Y CN201221509Y CNU2008200596698U CN200820059669U CN201221509Y CN 201221509 Y CN201221509 Y CN 201221509Y CN U2008200596698 U CNU2008200596698 U CN U2008200596698U CN 200820059669 U CN200820059669 U CN 200820059669U CN 201221509 Y CN201221509 Y CN 201221509Y
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- China
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- piston rod
- oil cylinder
- cylinder tube
- cylinder barrel
- mechanical locking
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Abstract
The utility model relates to an ultrahigh hydraulic double-acting mechanical locking oil cylinder which includes an oil cylinder barrel, the inner cylinder barrel of a screw piston rod and a locking nut; the inner cylinder barrel of the screw piston rod is arranged in the oil cylinder barrel; the locking nut is arranged at one side on the upper end of the oil cylinder barrel; a first oil inlet and a second oil inlet are respectively arranged on the two sides of the oil cylinder barrel; the ultrahigh hydraulic double-acting mechanical locking oil cylinder is characterized in that an hollow inner guide pole is arranged in the inner cylinder barrel of the screw piston rod; the oil cylinder barrel, the inner cylinder barrel of the screw piston rod and the hollow inner guide pole are homocentric shafts; the two ends of the hollow inner guide pole are respectively provided with an upper choke plug and a lower choke plug; the upper end of the inner cylinder barrel of the screw piston rod is provided with a spherical terminal disc seat; a spherical terminal disc is arranged on the upper end of the spherical terminal disc seat through a spherical gasket; the first oil inlet is connected with the inner hole of the hollow inner guide pole. The ultrahigh hydraulic double-acting mechanical locking oil cylinder has the advantages of not only being capable of maintaining the advantage of reliable locking of a single-acting mechanical locking oil cylinder, but also being capable of avoiding the defect of out of control of the returning speed thereof.
Description
Technical field
The utility model relates to a kind of ultra-high hydraulic double-acting mechanical locking oil cylinder, but the lifting large-scale component belongs to super high pressure hydraulic oil cylinder technical field.
Background technique
The super high pressure hydraulic oil cylinder of 70Mpa working pressure as lifting gear use have that lifting capacity can be expanded, construct flexibly, the cost tonnage is than advantage such as low, makes that the using scope of super high pressure hydraulic oil cylinder aspect a reposition of large-scale component is increasingly extensive.
The super high pressure hydraulic oil cylinder is to rely on hydraulic coupling or gravity backhaul to divide into two-way cylinder and one-way cylinder according to the oil cylinder piston bar.Piston rod one side (rod chamber) oil-feed drove when the piston rod of two-way cylinder bounced back, so the opening speed of two-way cylinder is controlled, and can bear corresponding pulling force, but it needs the cavity of rod chamber to seal.The piston rod retraction of one-way cylinder often relies on gravity or spring force, so rod chamber there is not the requirement of sealing.It has that pipeline is few, easy to operate, piston rod form advantage more flexibly.In the lifting of large-scale component construction, need member in the long time, to keep a certain height usually, even this just requires oil cylinder not keep in-oil cylinder fluid not leak under the situation of fuel feeding or leaks the situation that the reduction of piston rod height can not take place yet at oil pump.Two-way cylinder often can only adopt the hydraulic lock mode of Pilot operated check valve and so in this case.One-way cylinder then can be selected the single-acting mechanical locking oil cylinder that relies on thread lock on the piston rod for use.When the nut of oily mechanical locking oil cylinder screw with cylinder barrel decide face fit after piston rod-nut-cylinder barrel formed the mechanical support of rigidity, do not having under the situation of high-frequency vibration, the height that forms between them can not change, and it keeps the ability of height to be to use the two-seater of Pilot operated check valve pressurize incomparable with oil cylinder.Locate for a long time at needs in the construction of (a couple of days, several months even several years), mechanical locking oil cylinder is the most suitable product.
But, the shortcoming of this oil cylinder also clearly: rely on the gravity backhaul, its speed is uncontrollable.After particularly the load thereon of large-tonnage oil cylinder was removed, opening speed was quite slow, has had influence on construction speed.
Summary of the invention
The purpose of this utility model provides a kind of advantage that can keep the reliable locking of single-acting mechanical locking oil cylinder can avoid the not ultra-high hydraulic double-acting mechanical locking oil cylinder of controlled shortcoming of its opening speed simultaneously again.
For realizing above purpose, the technical solution of the utility model provides a kind of ultra-high hydraulic double-acting mechanical locking oil cylinder, comprise cylinder tube, threaded piston rod inner cylinder tube and locking nut, the threaded piston rod inner cylinder tube is located in the cylinder tube, one side is provided with locking nut in the cylinder tube upper end, be respectively equipped with first filler opening and second filler opening in the cylinder tube both sides, it is characterized in that, hollow inner guiding post is located in the threaded piston rod inner cylinder tube, cylinder tube, threaded piston rod inner cylinder tube and hollow inner guiding post are concentric shafts, be respectively equipped with upper plug head and lower end cap at the two ends of hollow inner guiding post, be provided with sphere in threaded piston rod inner cylinder tube upper end and take over a business seat, sphere takes over a business to be located at sphere by spherical washer and to take over a business seat upper end, and first filler opening is connected with hollow inner guiding post endoporus.
The present invention installs hollow inner guiding post in the threaded piston rod inner cylinder tube, when piston rod descends, hydraulic oil has formed in the inside of threaded piston rod inner cylinder tube and has pressed down the chamber, the threaded piston rod inner cylinder tube is descended, threaded piston rod inner cylinder tube appearance still can be processed the screw thread of locking usefulness, rely on its inner oil circuit controllably to rise and descend, the oil cylinder band carries in the uphill process, hydraulic oil enters oil cylinder cavity of resorption and threaded piston rod inner cylinder tube bottom, this moment threaded piston rod inner cylinder tube liter, be raised to when the threaded piston rod inner cylinder tube and only need screw off nut behind the height that needs and make it be fitted in Transverse plane on the oil cylinder, threaded piston rod inner cylinder tube-nut-cylinder tube has constituted firm support, when cylinder tube descends, after unscrewing locking nut, fluid enters the hollow inner guiding post chamber of threaded piston rod inner cylinder tube, and the threaded piston rod inner cylinder tube bounces back under the fluid effect.
The utility model has the advantages that:
1) kept the advantage of the highly reliable location of single-acting mechanical locking oil cylinder, nut check is operated as single safe and reliable, convenient and swift;
2) the whole height increase of oil cylinder is seldom arranged easily;
3) hydraulic piston rod backhaul, speed-controllable, efficient height.
Description of drawings
Fig. 1 is a kind of ultra-high hydraulic double-acting mechanical locking oil cylinder structural representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, be a kind of ultra-high hydraulic double-acting mechanical locking oil cylinder structural representation, described a kind of ultra-high hydraulic double-acting mechanical locking oil cylinder by cylinder tube 1, threaded piston rod inner cylinder tube 2, hollow inner guiding post 3, sphere take over a business that seat 4, locking nut 5, sphere take over a business 6, spherical washer 7, lower end cap 8, upper plug head 9, first filler opening 10 and second filler opening 11 form.
Threaded piston rod inner cylinder tube 2 is installed in the cylinder tube 1, locking nut 5 be installed in threaded piston rod inner cylinder tube 2 in the upper end one side, be respectively equipped with first filler opening 10 and second filler opening 11 in cylinder tube 1 both sides, hollow inner guiding post 3 is installed in the threaded piston rod inner cylinder tube 2, cylinder tube 1, threaded piston rod inner cylinder tube 2 and hollow inner guiding post 3 are concentric shafts, install plug 9 and lower end cap 8 respectively at the two ends of hollow inner guiding post 3, in threaded piston rod inner cylinder tube 2 upper ends sphere is installed and takes over a business seat 4, sphere take over a business 6 by spherical washer 7 be installed in sphere take over a business the seat 4 upper ends, first filler opening 10 is connected with hollow inner guiding post 3 endoporus.
Described super high pressure hydraulic pressure is 70MPa, and working medium is a hydraulic oil.
During work, when hydraulic jack rises, second filler opening 11 of fluid on cylinder tube 1 enters in the rodless cavity cavity between cylinder tube 1 and the threaded piston rod inner cylinder tube 2, promoting threaded piston rod inner cylinder tube 2 moves up, oil in the cavity between threaded piston rod inner cylinder tube 2 and the hollow inner guiding post 3 then is back to first filler opening 10 by the auxiliary hole on the hollow inner guiding post 3, when hydraulic jack descends, fluid enters auxiliary hole on the hollow inner guiding post 3 through first filler opening 10 on the cylinder tube 1, oil-filled in the rod chamber body between threaded piston rod inner cylinder tube 2 and hollow inner guiding post 3, threaded piston rod inner cylinder tube 2 is descended, in the cavity between cylinder tube 1 and the threaded piston rod inner cylinder tube 2, then reflux by second filler opening 11, the advantage that can keep the reliable locking of single-acting mechanical locking oil cylinder can be avoided the not controlled shortcoming of its opening speed simultaneously again.
Claims (1)
1. ultra-high hydraulic double-acting mechanical locking oil cylinder, comprise cylinder tube (1), threaded piston rod inner cylinder tube (2) and locking nut (5), threaded piston rod inner cylinder tube (2) is located in the cylinder tube (1), one side is provided with locking nut (5) in cylinder tube (1) upper end, be respectively equipped with first filler opening (10) in cylinder tube (1) both sides and second filler opening (11) is characterized in that, hollow inner guiding post (3) is located in the threaded piston rod inner cylinder tube (2), cylinder tube (1), threaded piston rod inner cylinder tube (2) and hollow inner guiding post (3) are concentric shafts, be respectively equipped with upper plug head (9) and lower end cap (8) at the two ends of hollow inner guiding post (3), be provided with sphere in threaded piston rod inner cylinder tube (2) upper end and take over a business seat (4), sphere take over a business (6) by spherical washer (7) be located at sphere take over a business the seat (4) upper end, first filler opening (10) is connected with hollow inner guiding post (3) endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200596698U CN201221509Y (en) | 2008-06-13 | 2008-06-13 | Ultra-high hydraulic double-acting mechanical locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200596698U CN201221509Y (en) | 2008-06-13 | 2008-06-13 | Ultra-high hydraulic double-acting mechanical locking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221509Y true CN201221509Y (en) | 2009-04-15 |
Family
ID=40575017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200596698U Ceased CN201221509Y (en) | 2008-06-13 | 2008-06-13 | Ultra-high hydraulic double-acting mechanical locking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221509Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573748A (en) * | 2013-09-30 | 2014-02-12 | 德州市佳欣液压有限公司 | Dual-function large-tonnage mechanical lock hydraulic cylinder |
-
2008
- 2008-06-13 CN CNU2008200596698U patent/CN201221509Y/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573748A (en) * | 2013-09-30 | 2014-02-12 | 德州市佳欣液压有限公司 | Dual-function large-tonnage mechanical lock hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20101216 Decision number of declaring invalidation: 15767 Granted publication date: 20090415 |