CN104154070A - Double-acting nut-locking hydrocylinder - Google Patents
Double-acting nut-locking hydrocylinder Download PDFInfo
- Publication number
- CN104154070A CN104154070A CN201410416737.1A CN201410416737A CN104154070A CN 104154070 A CN104154070 A CN 104154070A CN 201410416737 A CN201410416737 A CN 201410416737A CN 104154070 A CN104154070 A CN 104154070A
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- CN
- China
- Prior art keywords
- screw thread
- backhaul
- lifting plunger
- oil pocket
- plunger
- 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.)
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Abstract
The invention discloses a double-acting nut-locking hydrocylinder. By arranging a returning mechanism in a threaded plunger in a nut-locking hydrocylinder body, a sealed returning oil cavity is formed in the threaded plunger, and external oil supply and oil return can be performed independently; although the structure of an original nut-locking hydrocylinder is not affected, the problem that the original nut-locking hydrocylinder cannot achieve automatic returning is solved. In this way, the double-acting nut-locking hydrocylinder can have the functions of nut locking and hydraulic returning at the same time.
Description
Technical field
The present invention relates to hydraulic jack, a kind of double-action nut check hydraulic jack with hydraulic pressure backhaul and nut check function is provided especially.
Background technique
The application of hydraulic jack in engineering construction is more and more extensive, especially bridge construction industry, with respect to mechanical lift-up, there is higher energy density and jacking ability, but secure context is difficult to realize guarantee, therefore in the middle of practical application, must, by means of solid block as safety protection, reduce working efficiency, improve cost.
The appearance of nut check oil cylinder has solved this problem effectively, and hydraulic jack, after completing jacking, by the nut check plunger at oil cylinder top, provides mechanical protection, prevents because the problem that load that the accident such as pressure, leakage brings is fallen appears falling in hydraulic pressure.But the plunger upper part of nut check oil cylinder must process screw thread to be coordinated with nut, and therefore the rod chamber of oil cylinder is difficult to make sealed hydraulic chamber, cannot realize hydraulic pressure backhaul, can only rely on load backhaul, limit the utilization efficiency of nut check hydraulic jack.
If nut check hydraulic jack can be realized hydraulic pressure backhaul, in conjunction with the hydraulic pressure backhaul advantage of double-act-ing hydraulic J-Horner, can greatly improve efficiency and the Applicable scope of nut check oil cylinder.
Summary of the invention
Goal of the invention: the object of the invention is in order to solve the deficiencies in the prior art, a kind of double-action nut check hydraulic jack with nut check function and hydraulic pressure backhaul function is provided.
Technological scheme: in order to realize above object, a kind of double-action nut check hydraulic jack of the present invention, comprise: screw thread stick harness, cylinder body and return mechanism: described return mechanism comprises: be located at the backhaul oil pocket of described screw thread stick harness inside, reciprocating lifting plunger in backhaul oil pocket; Described lifting plunger inside is provided with backhaul oil-way pipe, and this backhaul oil-way pipe upper end is connected with backhaul oil pocket, and lower end is connected with backhaul hydraulic fluid port.In the present invention, by having increased return mechanism, realize the automated backhaul of nut check hydraulic jack; In return mechanism, by add a little backhaul oil cylinder in screw thread plunger inside, form a seal oil chamber in the inside of hydraulic jack, as backhaul oil pocket, realize separate outer fuel feeding and oil return, do not affect original hydraulic jack.In the present invention, in the time of backhaul oil pocket fuel feeding, backhaul oil pocket internal pressure raises, and screw thread plunger is moved downward, realize backhaul function, solve jacking oil pocket in prior art and be difficult to make sealed hydraulic chamber, cannot realize hydraulic pressure backhaul, can only rely on the problem of load backhaul.
Described in the present invention, return mechanism comprises: lifting plunger piston packing and lifting plunger rod seal circle; Described lifting plunger piston packing is between lifting plunger and the surface of contact of backhaul oil pocket; Described lifting plunger rod seal circle is between lifting plunger and the surface of contact of screw thread stick harness.In the present invention, by between lifting plunger and backhaul oil pocket, screw thread stick harness surface of contact, seal ring being set, strengthen the sealing of backhaul oil pocket, improved the backhaul efficiency of return mechanism.
In the present invention, also comprise: screw thread plunger piston packing and lifting plunger static sealing ring; Described screw thread plunger piston packing is between screw thread stick harness lower end and the surface of contact of jacking oil pocket inwall; Described lifting plunger static sealing ring is between lifting plunger and the surface of contact of jacking oil pocket inwall.The present invention, by between jacking oil pocket and screw thread stick harness, lifting plunger surface of contact, screw thread plunger piston packing and lifting plunger static sealing ring being set, has strengthened the sealing of jacking oil pocket, improves the working efficiency of hydraulic jack.
Lifting plunger described in the present invention is " T " font.The design of T font is the optimization design scheme of lifting plunger, can form backhaul oil pocket in the middle and lower part, outside of lifting plunger, without the top of designing in lifting plunger, has improved sealing effect.
Double-action nut check hydraulic jack of the present invention comprises: locking nut; Described screw thread stick harness top is provided with the screw thread suitable with locking nut, and bottom is smooth cylinder; Described screw thread stick harness upper end and locking screw parent phase fasten, and lower end packs jacking oil pocket into.The inside that is arranged on hydraulic jack based on above-mentioned return mechanism is realized and is sealed independently backhaul oil circuit, can realize nut check and hydraulic pressure backhaul function after being applied to nut check hydraulic jack.
Beneficial effect: compared with prior art, the present invention has the following advantages:
1, nut check hydraulic jack of the present invention can have nut check function and hydraulic pressure backhaul function simultaneously.
2, in the present invention, add return mechanism in screw thread plunger inside, form backhaul oil circuit, scheme simple possible does not affect profile and the original function of nut check oil cylinder.
3, in the present invention, lifting plunger is anchored on cylinder body, and interior bone forms backhaul oil circuit, does not need additionally to increase hydraulic pipe line.
Brief description of the drawings
Fig. 1 is the sectional view of the nut check of double-action described in embodiment of the present invention hydraulic jack.
Fig. 2 is the sectional view of lifting plunger in embodiment.
1-saddle 2-screw thread plunger 3-locking nut 4-lifting plunger 5-dust ring 6-position-limitting mouth 7-lifting plunger rod seal circle 8-screw thread plunger piston packing 9-cylinder body 10-lifting plunger static sealing ring 11-jacking hydraulic fluid port 12-backhaul hydraulic fluid port 13-jacking oil pocket 14-backhaul oil pocket 15-lifting plunger piston packing.
embodiment:
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiments is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present invention.
Embodiment:
A kind of double-action nut check hydraulic jack as described in Figure, comprising: saddle 1, screw thread stick harness 2, locking nut 3, cylinder body 9 and return mechanism; Described return mechanism comprises: be located at the backhaul oil pocket 14 of described screw thread stick harness 2 inside, at the interior reciprocating lifting plunger 4 of backhaul oil pocket 14; For enhanced leaktightness performance, be also provided with: dust ring 5, lifting plunger rod seal circle 7, screw thread plunger piston packing 8, lifting plunger static sealing ring 10, lifting plunger piston packing 15.
The relation of above-mentioned each parts is as follows:
Described saddle 1 is fixed on the top of screw thread stick harness 2; Described screw thread stick harness 2 lower ends pack in the jacking oil pocket 13 of cylinder body 9, and described lifting plunger piston packing 15 is between lifting plunger 4 and the surface of contact of backhaul oil pocket 14; Described lifting plunger rod seal circle 7 is between lifting plunger 4 and the surface of contact of screw thread stick harness 2; Described screw thread plunger piston packing 8 is between screw thread stick harness 2 lower ends and the surface of contact of jacking oil pocket 13 inwalls; Described lifting plunger static sealing ring 10 is between lifting plunger 4 and the surface of contact of jacking oil pocket 13 inwalls; Described dust ring 5 is arranged at screw thread on screw thread stick harness 2 to be finished on the surface of contact between end and jacking oil pocket 13.
Described jacking oil pocket 13, forms jacking oil circuit by jacking hydraulic fluid port 11, realizes outside fuel feeding and oil return; The inner integrated lifting plunger 4 of screw thread plunger 2, lifting plunger rod seal circle 7 and lifting plunger piston packing 15 form with screw column plug the backhaul oil pocket 14 sealing, and form backhaul oil circuit, realize outside fuel feeding and oil return by backhaul hydraulic fluid port 12.
Described in the present embodiment, the working procedure of double-action nut check hydraulic jack is as follows:
When work, jacking hydraulic fluid port 11 is to jacking oil pocket 13 fuel feeding, along with hydraulic pressure raises, screw thread plunger 2 rises, and by the load jack-up of supporting by saddle 1, adjusts locking nut 3 and locate after arrival predetermined altitude, screw thread plunger 2 is lock onto to cylinder body 9, play safety protection function; Hydraulic oil in the oil pocket of backhaul simultaneously 14 is by lifting plunger internal oil passages and 12 oil returns of backhaul hydraulic fluid port.
After lifting operation completes, adjust and unscrew locking nut 3, to backhaul hydraulic fluid port 12 fuel feeding, the interior oil mass of backhaul oil pocket 14 increases, pressure raises, and screw thread plunger 2 is pressed down, and the hydraulic oil in jacking oil pocket 13, by 11 oil returns of jacking hydraulic fluid port, is realized hydraulic pressure backhaul.
Claims (5)
1. a double-action nut check hydraulic jack, comprising: screw thread stick harness (2), cylinder body (9); It is characterized in that: comprise return mechanism: described return mechanism comprises: be located at the inner backhaul oil pocket (14) of described screw thread stick harness (2), reciprocating lifting plunger (4) in backhaul oil pocket (14); Described lifting plunger (4) inside is provided with backhaul oil-way pipe (16), and this backhaul oil-way pipe (16) upper end is connected with backhaul oil pocket (14), and lower end is connected with backhaul hydraulic fluid port (12).
2. double-action nut check hydraulic jack according to claim 1, is characterized in that: described return mechanism comprises: lifting plunger piston packing (15) and lifting plunger rod seal circle (7); Described lifting plunger piston packing (15) is positioned between lifting plunger (4) and the surface of contact of backhaul oil pocket (14); Described lifting plunger rod seal circle (7) is positioned between lifting plunger (4) and the surface of contact of screw thread stick harness (2).
3. double-action nut check hydraulic jack according to claim 1, is characterized in that: comprising: screw thread plunger piston packing (8) and lifting plunger static sealing ring (10); Described screw thread plunger piston packing (8) is positioned between screw thread stick harness (2) lower end and the surface of contact of jacking oil pocket (13) inwall; Described lifting plunger static sealing ring (10) is positioned between lifting plunger (4) and the surface of contact of jacking oil pocket (13) inwall.
4. double-action nut check hydraulic jack according to claim 1, is characterized in that: described lifting plunger (4) is " T " font.
5. double-action nut check hydraulic jack according to claim 1, is characterized in that: comprising: locking nut (3); Described screw thread stick harness (2) top is provided with the screw thread suitable with locking nut (3), and bottom is smooth cylinder; Described screw thread stick harness (2) upper end fastens mutually with locking nut (3), and lower end packs jacking oil pocket (13) into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416737.1A CN104154070A (en) | 2014-08-22 | 2014-08-22 | Double-acting nut-locking hydrocylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416737.1A CN104154070A (en) | 2014-08-22 | 2014-08-22 | Double-acting nut-locking hydrocylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104154070A true CN104154070A (en) | 2014-11-19 |
Family
ID=51879657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410416737.1A Pending CN104154070A (en) | 2014-08-22 | 2014-08-22 | Double-acting nut-locking hydrocylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154070A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035937A (en) * | 2018-01-09 | 2018-05-15 | 嘉兴新维液压缸有限公司 | A kind of oil cylinder of double locking |
| CN110065789A (en) * | 2018-11-28 | 2019-07-30 | 中国神华能源股份有限公司 | Conveyer uninstalling portion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB925777A (en) * | 1961-08-10 | 1963-05-08 | Ernest Onezieme Naud | Hydraulic jack |
| US3353352A (en) * | 1966-01-11 | 1967-11-21 | Caterpillar Tractor Co | Load balancing system for hydraulic jack |
| CN101307788A (en) * | 2008-06-23 | 2008-11-19 | 上海耐斯特液压设备有限公司 | Ultra-high hydraulic double-acting mechanical locking oil cylinder |
| CN102374206A (en) * | 2010-08-13 | 2012-03-14 | 四川宏华石油设备有限公司 | Oil cylinder with locking device |
| CN202418089U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic support cylinder |
| CN204061403U (en) * | 2014-08-22 | 2014-12-31 | 实用动力(中国)工业有限公司 | Automated backhaul nut check hydraulic jack |
-
2014
- 2014-08-22 CN CN201410416737.1A patent/CN104154070A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB925777A (en) * | 1961-08-10 | 1963-05-08 | Ernest Onezieme Naud | Hydraulic jack |
| US3353352A (en) * | 1966-01-11 | 1967-11-21 | Caterpillar Tractor Co | Load balancing system for hydraulic jack |
| CN101307788A (en) * | 2008-06-23 | 2008-11-19 | 上海耐斯特液压设备有限公司 | Ultra-high hydraulic double-acting mechanical locking oil cylinder |
| CN102374206A (en) * | 2010-08-13 | 2012-03-14 | 四川宏华石油设备有限公司 | Oil cylinder with locking device |
| CN202418089U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic support cylinder |
| CN204061403U (en) * | 2014-08-22 | 2014-12-31 | 实用动力(中国)工业有限公司 | Automated backhaul nut check hydraulic jack |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035937A (en) * | 2018-01-09 | 2018-05-15 | 嘉兴新维液压缸有限公司 | A kind of oil cylinder of double locking |
| CN110065789A (en) * | 2018-11-28 | 2019-07-30 | 中国神华能源股份有限公司 | Conveyer uninstalling portion |
| CN110077807A (en) * | 2018-11-28 | 2019-08-02 | 中国神华能源股份有限公司 | Control System of Belt Conveyer and control method |
| CN110077806A (en) * | 2018-11-28 | 2019-08-02 | 中国神华能源股份有限公司 | Belt conveyor pillar |
| CN110077808A (en) * | 2018-11-28 | 2019-08-02 | 中国神华能源股份有限公司 | Belt conveyor assembly |
| CN110065789B (en) * | 2018-11-28 | 2021-03-30 | 中国神华能源股份有限公司 | Unloading part of conveyor |
| CN110077807B (en) * | 2018-11-28 | 2021-06-29 | 中国神华能源股份有限公司 | Belt conveyor control system and control method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |