CN202579420U - Ultrahigh pressure jacking oil cylinder - Google Patents
Ultrahigh pressure jacking oil cylinder Download PDFInfo
- Publication number
- CN202579420U CN202579420U CN 201220185834 CN201220185834U CN202579420U CN 202579420 U CN202579420 U CN 202579420U CN 201220185834 CN201220185834 CN 201220185834 CN 201220185834 U CN201220185834 U CN 201220185834U CN 202579420 U CN202579420 U CN 202579420U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- oil
- fluid port
- hydraulic fluid
- ultrahigh 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 20
- 239000000945 filler Substances 0.000 claims description 16
- 238000010276 construction Methods 0.000 abstract description 17
- 239000003921 oil Substances 0.000 description 35
- 238000011084 recovery Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses an ultrahigh pressure jacking oil cylinder, which comprises a cylinder body, a piston rod, a guide sleeve, an inner screw nut and a bottom plate, wherein the inner screw nut is used for fixing the guide sleeve, the bottom plate is connected with the outer end of the piston rod, a rodless cavity oil opening and a rod cavity oil opening are arranged on the cylinder body, and a hydraulic lock is arranged between the rodless cavity oil opening and the rod cavity oil opening. The ultrahigh pressure jacking oil cylinder is characterized in that more than two sealing rings are respectively arranged on sealing surfaces between the guide sleeve and the piston rod as well as the guide sleeve and the cylinder body, the outer end of the piston rod is provided with screw threads, and a locking screw nut is arranged on the outer end of the piston rod. The ultrahigh pressure jacking oil cylinder has the advantages that the positioning of the position rod is firm, and the jacking speed is controllable. The construction safety and the construction quality can be ensured.
Description
Technical field
The utility model relates to a kind of jacking cylinder, particularly ultrahigh pressure jacking cylinder.
Background technique
The jacking cylinder that in railway or bridge construction, uses at present is because of carrying bigger load, and system pressure often is in the operating mode of ultrahigh pressure, and the operation cycle is longer; For bearing ultrahigh pressure, existing jacking cylinder is provided with a hydraulic lock usually between two hydraulic fluid ports, prevent the improper recovery of piston rod, with the lock piston bar; But because system pressure is very high, in-oil cylinder Sealing under high pressure long easy generation of time one lost efficacy, and leaked, and piston rod is creeped downwards, and piston rod can not be fixed and will have a strong impact on construction safety; And in construction, normally many jacking cylinders are worked together, when jacking, are in again under the high pressure, and the oil-feed rapid speed of oil cylinder is uncontrollable again, and many jacking cylinders are difficult to realize synchronization motion, will influence construction quality.
The model utility content
The purpose of the utility model is the above-mentioned deficiency that exists to existing technology, and a kind of ultrahigh pressure jacking cylinder is provided, and it has the advantage of piston rod firm position, jacking speed-controllable, can guarantee construction safety and construction quality.
For achieving the above object; The ultrahigh pressure jacking cylinder of the utility model; Comprise cylinder body, piston rod, guide sleeve, the inner nut of fixed guide cover, the base plate that connects with the piston rod outer end; On cylinder body, be provided with rodless cavity hydraulic fluid port and rod chamber hydraulic fluid port, between rodless cavity hydraulic fluid port and rod chamber hydraulic fluid port, be provided with hydraulic lock, it is characterized in that on the sealing surface of guide sleeve and piston rod and guide sleeve and cylinder body, being equipped with the seal ring more than the twice; Outer end at piston rod is provided with screw thread, and a locking nut is loaded on the outer end of piston rod.
The utility model can improve sealing through on the sealing surface of guide sleeve and piston rod and guide sleeve and cylinder body, being equipped with the seal ring more than the twice, prevents to reveal; Piston rod is difficult for producing creeping phenomenon, and after the piston rod jacking put in place, the rotation lock nut made its end face near cylinder body simultaneously; Realization is to the mechanical positioning of piston rod; Can prevent that it from reclaiming, have the advantage of firm position, can guarantee construction safety;
Further improvement as the utility model; Said hydraulic lock comprises valve body, be located at two filler opening A and B, two oil outlet A1 and B1 on the valve body; Filler opening A links to each other with oil outlet A1 with one-way valve in being located at two oil circuits through two oil circuits; Wherein on the oil circuit of an one-way valve and oil outlet A1, also be provided with the throttling valve core of band tapering through the adjustment nut; Filler opening B directly links to each other with oil outlet B1; The connection oil circuit that the front end of two one-way valves also passes through separately links to each other with filler opening B, and in two connection oil circuits, is equipped with moving valve core and Returnning spring, and the sectional area that its front end of wherein corresponding with throttling valve core one-way valve connects the moving valve core in oil circuit is bigger than the sectional area of another moving valve core; Oil outlet A1 links to each other with the rodless cavity hydraulic fluid port, and oil outlet B1 links to each other with the rod chamber hydraulic fluid port; Through regulating throttling valve core, the speed of may command oil cylinder jacking when reclaiming is convenient to realize the synchronism of many cylinder actions can guarantee construction quality;
Further improvement as the utility model is provided with anchor ear on the piston rod between base plate and the locking nut; Through increasing the one-level mechanical positioning, further improve the soundness of piston rod location;
In sum, the utlity model has the advantage of piston rod firm position, jacking speed-controllable, can guarantee construction safety and construction quality.
Description of drawings
Fig. 1 is the utility model embodiment's a plan view.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the plan view of hydraulic lock among Fig. 1.
Fig. 4 is the C-C sectional view of Fig. 3.
Fig. 5 is the hydraulic schematic diagram of hydraulic lock.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Extremely shown in Figure 5 like Fig. 1; This ultrahigh pressure jacking cylinder; Comprise cylinder body 1, piston rod 2, guide sleeve 3, the inner nut 4 of fixed guide cover, the base plate 5 that connects with piston rod 2 outer ends; On cylinder body, be provided with rodless cavity hydraulic fluid port 6 and rod chamber hydraulic fluid port 7, between rodless cavity hydraulic fluid port 6 and rod chamber hydraulic fluid port 7, be provided with hydraulic lock 8, on the sealing surface of guide sleeve 3 and piston rod 2 and guide sleeve 3 and cylinder body 1, be equipped with two seals circle 9; Outer end at piston rod 2 is provided with screw thread, and a locking nut 10 is loaded on the outer end of piston rod 2; Said hydraulic lock 8 comprises valve body 12, be located at two filler opening A and B, two oil outlet A1 and B1 on the valve body 12; Filler opening A links to each other with oil outlet A1 with one-way valve 13,14 in being located at two oil circuits through two oil circuits; Wherein on the oil circuit of one-way valve 13 and oil outlet A1, also be provided with the throttling valve core 15 of band tapering through adjustment nut 16; Filler opening B directly links to each other with oil outlet B1; The connection oil circuit that the front end of two one-way valves 13,14 also passes through separately links to each other with filler opening B; And two connect be equipped with in the oil circuits moving valve core 20 or 17 with Returnning spring 18 or 19, the sectional area of the moving valve core 20 in wherein corresponding with throttling valve core 15 one-way valve 13 its front ends connection oil circuits is bigger than the sectional area of another moving valve core 17; Oil outlet A1 links to each other with rodless cavity hydraulic fluid port 6, and oil outlet B1 links to each other with rod chamber hydraulic fluid port 7;
When the utility model used, when the filler opening A of hydraulic lock 8 oil-feed, hydraulic oil was pushed two one-way valves 13,14 get into oil cylinder from oil outlet A1 rodless cavity open; Promote piston rod 2 and stretch out, in this process, through adjustment nut 16 and the position of regulating throttling valve core 15; The flow of may command hydraulic oil; Thereby control the jacking speed of oil cylinder, be convenient to realize the synchronism of many cylinder actions, can guarantee construction quality; After jacking put in place, filler opening A stopped oil-feed, and two one-way valves 13,14 are closed under the effect of spring; Fluid in the rodless cavity is closed, and it is motionless that piston rod 2 is kept the jacking position, and two seals circle 9 can improve sealing; Prevent to reveal, piston rod 2 is difficult for producing creeping phenomenon, and rotation lock nut 10 makes its end face near cylinder body 1 again; On the piston rod 2 between base plate 5 and the locking nut 10, anchor ear 11 is set, realizes secondary mechanical positioning, even in the very long operation cycle, also can prevent its recovery to piston rod 2; Advantage with firm position can guarantee construction safety; When construction finishes, when needing to regain piston rod 2, unclamp locking nut 10 and anchor ear 11 earlier; By filler opening B oil-feed, get into the rod chamber of oil cylinder again by oil outlet B1, promote piston rod 2 downwards; High pressure oil promotes moving valve core 20 earlier and opens one-way valve 13 simultaneously; Promote moving valve core 17 again and open one-way valve 14, the decompression oil in the rodless cavity can flow out through oil outlet A1, two one-way valves 13,14 and filler opening A, accomplishes the recovery of piston rod 2; Under the operating mode of ultrahigh pressure, the utlity model has the advantage of piston rod firm position, jacking speed-controllable, can guarantee construction safety and construction quality.
Claims (3)
1. ultrahigh pressure jacking cylinder; Comprise cylinder body, piston rod, guide sleeve, the inner nut of fixed guide cover, the base plate that connects with the piston rod outer end; On cylinder body, be provided with rodless cavity hydraulic fluid port and rod chamber hydraulic fluid port, between rodless cavity hydraulic fluid port and rod chamber hydraulic fluid port, be provided with hydraulic lock, it is characterized in that on the sealing surface of guide sleeve and piston rod and guide sleeve and cylinder body, being equipped with the seal ring more than the twice; Outer end at piston rod is provided with screw thread, and a locking nut is loaded on the outer end of piston rod.
2. ultrahigh pressure jacking cylinder as claimed in claim 1; It is characterized in that said hydraulic lock comprises valve body, is located at two filler opening A and B, two oil outlet A1 and B1 on the valve body; Filler opening A links to each other with oil outlet A1 with one-way valve in being located at two oil circuits through two oil circuits; Wherein on the oil circuit of an one-way valve and oil outlet A1, also be provided with the throttling valve core of band tapering through the adjustment nut; Filler opening B directly links to each other with oil outlet B1; The connection oil circuit that the front end of two one-way valves also passes through separately links to each other with filler opening B, and in two connection oil circuits, is equipped with moving valve core and Returnning spring, and the sectional area that its front end of wherein corresponding with throttling valve core one-way valve connects the moving valve core in oil circuit is bigger than the sectional area of another moving valve core; Oil outlet A1 links to each other with the rodless cavity hydraulic fluid port, and oil outlet B1 links to each other with the rod chamber hydraulic fluid port.
3. according to claim 1 or claim 2 ultrahigh pressure jacking cylinder is characterized in that on the piston rod between base plate and the locking nut, being provided with anchor ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220185834 CN202579420U (en) | 2012-04-27 | 2012-04-27 | Ultrahigh pressure jacking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220185834 CN202579420U (en) | 2012-04-27 | 2012-04-27 | Ultrahigh pressure jacking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579420U true CN202579420U (en) | 2012-12-05 |
Family
ID=47248836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220185834 Expired - Fee Related CN202579420U (en) | 2012-04-27 | 2012-04-27 | Ultrahigh pressure jacking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114394A (en) * | 2015-09-06 | 2015-12-02 | 四川泸州派克斯液压机械有限公司 | Structure capable of improving sealing performance of ultra-high pressure oil cylinder |
| CN113606209A (en) * | 2021-08-04 | 2021-11-05 | 宁波威森搏乐机械制造有限公司 | Hydraulic lock subassembly of adjustable flow |
-
2012
- 2012-04-27 CN CN 201220185834 patent/CN202579420U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114394A (en) * | 2015-09-06 | 2015-12-02 | 四川泸州派克斯液压机械有限公司 | Structure capable of improving sealing performance of ultra-high pressure oil cylinder |
| CN113606209A (en) * | 2021-08-04 | 2021-11-05 | 宁波威森搏乐机械制造有限公司 | Hydraulic lock subassembly of adjustable flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20200427 |