CN101915251A - Telescopic hydraulic cylinder - Google Patents
Telescopic hydraulic cylinder Download PDFInfo
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- CN101915251A CN101915251A CN 201010262524 CN201010262524A CN101915251A CN 101915251 A CN101915251 A CN 101915251A CN 201010262524 CN201010262524 CN 201010262524 CN 201010262524 A CN201010262524 A CN 201010262524A CN 101915251 A CN101915251 A CN 101915251A
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- cylinder body
- convex platform
- lug boss
- outer lug
- hydraulic cylinder
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Abstract
The invention relates to the technical field of hydraulic cylinders, in particular to a telescopic hydraulic cylinder which comprises a central shaft, an outer cylinder body and an inner cylinder body, wherein the outer cylinder body comprises a first upper boss, a first lower boss and a first cylinder body, the upper end and the lower end of the first cylinder body are respectively fixed with the outer sides of the first upper boss and the first lower boss together, and the first lower boss comprises a first step and a second step which are sequentially heightened from inside to outside; and a first oil inlet channel is arranged on the first step, the inner cylinder body comprises a second upper boss, a second lower boss, a first outer boss and a second cylinder body, the upper end of the second cylinder body is fixed with the outer side of the second upper boss together, and the lower end of the second cylinder body is fixed with the upper part of the outer side of the second lower boss together. The telescopic hydraulic cylinder has reasonable and compact structure and is convenient to use, and can lead the central shaft to drive a plunger piston to move up and down by leading hydraulic oil to enter into different cavities, thereby greatly improving the working efficiency of the hydraulic cylinder and the adaptability of the hydraulic cylinder to the working of a downhole vertical well drilling tool under rotating state.
Description
Technical field
The present invention relates to the oil hydraulic cylinder technical field, is a kind of telescopic hydraulic cylinder.
Background technique
Vertical drilling tool is a kind of drilling tool that collects the downhole closed loop system of mechanical-electrical-hydraulic integration, is that the revolutionary character of anti-well straightening method breaks through, and is the cutting edge technology in drilling well field.Hydraulic system is one of key technology of vertical drilling tool, and the high pressure oil drive plunger that oil hydraulic pump provides is stretched out, thereby produces a lateral force of pointing to the low limit of hole deviation, is issued to the effect of drop angle in the effect of this lateral force.Stretching out and retraction principle flexible identical with hydraulic cylinder piston of plunger.As everyone knows, after the piston of conventional oil hydraulic cylinder stretches out, can not realize initiatively withdrawal, must reduce the pressure of oil hydraulic cylinder, liquid flows back to stream, and working procedure is loaded down with trivial details, the length that expends time in is unfavorable for the working condition of down-hole vertical drilling tool at the continuous and adjustable of rotation status lower plunger.
Summary of the invention
The invention provides a kind of telescopic hydraulic cylinder, overcome the deficiency of above-mentioned prior art, can not realize the initiatively problem of withdrawal after its piston that can effectively solve conventional oil hydraulic cylinder stretches out.
Technological scheme of the present invention realizes by following measure: a kind of telescopic hydraulic cylinder comprises central shaft, outer cylinder body and inner cylinder body; Outer cylinder body comprises first convex platform, first lower convex platform and first cylinder body, the top and bottom of first cylinder body are fixed together with the outside of first convex platform and first lower convex platform respectively, and first lower convex platform comprises first step and the second step that the from-inner-to-outer height increases in regular turn; First oil inlet passage is arranged on first step, inner cylinder body comprises second convex platform, second lower convex platform, first outer lug boss and second cylinder body, the outside of the upper end of second cylinder body and second convex platform is fixed together, the outer upper of the lower end of second cylinder body and second lower convex platform is fixed together, the outside, lower end of second cylinder body is fixed together with first outer lug boss, the upper end of second cylinder body is sleeved in first convex platform and can moves up and down, first outer lug boss is sleeved in the middle part of first cylinder body, the bottom of second lower convex platform is sitting on the second step, first outer lug boss, first cylinder body, form first cavity between second cylinder body and first convex platform, second oil inlet passage that is connected with first cavity is arranged in first cylinder body, central shaft comprises upper binding head, the axis body and second outer lug boss, the lower end of upper binding head and the upper end of axis body are fixed together, the upper and lower of axis body is set in second convex platform and second lower convex platform and can moves up and down, the bottom of axis body is sitting on the first step and blocks first oil inlet passage, second outer lug boss is sleeved in the middle part of second cylinder body, second outer lug boss, second convex platform, form second cavity between second cylinder body and the axis body, the 3rd oil inlet passage that is connected with second cavity is arranged in second cylinder body, second outer lug boss, axis body, form the spring installation cavity between second cylinder body and second lower convex platform, pressure spring is positioned at the spring installation cavity and is sleeved on the axis body, the upper end of pressure spring withstands on the bottom of second outer lug boss, the lower end of pressure spring withstands on the top of second lower convex platform, and the outlet passageway that is connected and is connected with the outside with the spring installation cavity is arranged on second cylinder body.
Be further optimization and/or improvements below to the foregoing invention technological scheme:
Between the above-mentioned axis body and second lower convex platform seal ring can be installed.
Between above-mentioned second outer lug boss and second cylinder body seal ring can be installed.
Between above-mentioned first outer lug boss and first cylinder body seal ring can be installed.
Between the above-mentioned axis body and second convex platform seal ring can be installed.
Between above-mentioned first convex platform and second cylinder body seal ring can be installed.
Reasonable and compact in structure of the present invention, easy to use, enter into different cavitys by hydraulic oil and make central shaft can drive plunger to move up and down, therefore greatly improved the working efficiency of oil hydraulic cylinder and oil hydraulic cylinder to the adaptability of down-hole vertical drilling tool in rotation status work.
Description of drawings
Accompanying drawing 1 is the main TV structure schematic representation of most preferred embodiment of the present invention.
Coding in the accompanying drawing is respectively: 1 is first convex platform, and 2 is first cylinder body, and 3 is first step, and 4 is second step, 5 is first oil inlet passage, and 6 is second convex platform, and 7 is second lower convex platform, and 8 is first outer lug boss, 9 is second cylinder body, and 10 is first cavity, and 11 is second oil inlet passage, 12 is upper binding head, and 13 is axis body, and 14 is second outer lug boss, 15 is second cavity, and 16 is the 3rd oil inlet passage, and 17 is the spring installation cavity, 18 is pressure spring, and 19 is outlet passageway, and 20 is seal ring.
Embodiment
The present invention is not subjected to following embodiment's restriction, can determine concrete mode of execution according to technological scheme of the present invention and actual conditions.
In the present invention, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: upper and lower, about etc. the position relation be what to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the present invention is further described:
As shown in Figure 1, this telescopic hydraulic cylinder comprises central shaft, outer cylinder body and inner cylinder body; Outer cylinder body comprises first convex platform 1, first lower convex platform and first cylinder body 2, the top and bottom of first cylinder body 2 are fixed together with the outside of first convex platform 1 and first lower convex platform respectively, and first lower convex platform comprises first step 3 and the second step 4 that the from-inner-to-outer height increases in regular turn; First oil inlet passage 5 is arranged on first step 3, inner cylinder body comprises second convex platform 6, second lower convex platform 7, first outer lug boss 8 and second cylinder body 9, the outside of the upper end of second cylinder body 9 and second convex platform 6 is fixed together, the outer upper of the lower end of second cylinder body 9 and second lower convex platform 7 is fixed together, the outside, lower end of second cylinder body 9 is fixed together with first outer lug boss 8, the upper end of second cylinder body 9 is sleeved in first convex platform 1 and can moves up and down, first outer lug boss 8 is sleeved in the middle part of first cylinder body 2, the bottom of second lower convex platform 7 is sitting on the second step 4, first outer lug boss 8, first cylinder body 2, form first cavity 10 between second cylinder body 9 and first convex platform 1, second oil inlet passage 11 that is connected with first cavity 10 is arranged in first cylinder body 2, central shaft comprises upper binding head 12, the axis body 13 and second outer lug boss 14, the upper end of the lower end of upper binding head 12 and axis body 13 is fixed together, the upper and lower of axis body 13 is set in second convex platform 6 and second lower convex platform 7 and can moves up and down, the bottom of axis body 13 is sitting on the first step 3 and blocks first oil inlet passage 5, second outer lug boss 14 is sleeved in the middle part of second cylinder body 9, second outer lug boss 14, second convex platform 6, form second cavity 15 between second cylinder body 9 and the axis body 13, the 3rd oil inlet passage 16 that is connected with second cavity 15 is arranged in second cylinder body 9, second outer lug boss 14, axis body 13, form spring installation cavity 17 between second cylinder body 9 and second lower convex platform 7, pressure spring 18 is positioned at spring installation cavity 17 and is sleeved on the axis body 13, the upper end of pressure spring 18 withstands on the bottom of second outer lug boss 14, the lower end of pressure spring 18 withstands on the top of second lower convex platform 7, and the outlet passageway 19 that is connected with spring installation cavity 17 and is connected with the outside is arranged on second cylinder body 9.
Can according to actual needs above-mentioned telescopic hydraulic cylinder be made further optimization and/or improvements:
As shown in Figure 1, in order to reach better sealing, between the axis body 13 and second lower convex platform 7 seal ring 20 is installed.
As shown in Figure 1, in order to reach better sealing, between second outer lug boss 14 and second cylinder body 9 seal ring 20 is installed.
As shown in Figure 1, in order to reach better sealing, between first outer lug boss 8 and first cylinder body 2 seal ring 20 is installed.
As shown in Figure 1, in order to reach better sealing, between the axis body 13 and second convex platform 6 seal ring 20 is installed.
As shown in Figure 1, in order to reach better sealing, between first convex platform 1 and second cylinder body 9 seal ring 20 is installed.
Above technical characteristics has constituted most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristics according to actual needs, satisfies the demand of different situations.
The using process of most preferred embodiment of the present invention: when 5 oil-feeds of first oil inlet passage, the pressure of hydraulic oil makes axis body 13 move up and second outer lug boss 14 is withstood on the bottom of second convex platform 6 along second cavity 15, at this moment, hydraulic oil enters in the first step 3 and promotes axis body 13 and second lower convex platform 7 moves up, at this moment, central shaft and inner cylinder body move up simultaneously, hydraulic oil also enters in the second step 4 and promotes axis body 13 simultaneously, second lower convex platform 7, second cylinder body 9 and first outer lug boss 8 move up along first cavity 10 together, withstand on the bottom of first convex platform 1 until first outer lug boss 8, continuous rising along with hydraulic coupling, hydraulic oil is from the last end face of the 3rd oil inlet passage 16 extruding second outer lug boss 14, when hydraulic coupling during greater than the precompression of pressure spring 18, central shaft will move down, at this moment, the hydraulic coupling of removal first oil inlet passage 5, central shaft moves up under the precompression of pressure spring 18, from 11 oil-feeds of second oil inlet passage, the pressure of hydraulic oil makes first outer lug boss 8 move down and finally make second lower convex platform 7 to be sitting on the 4th step 4 along first cavity 10, the bottom of axis body 13 is sitting on the first step 3, get back to original state, thereby realize moving up and down the function of direction with hydraulic coupling control centre axle.
Claims (10)
1. a telescopic hydraulic cylinder is characterized in that comprising central shaft, outer cylinder body and inner cylinder body; Outer cylinder body comprises first convex platform, first lower convex platform and first cylinder body, the top and bottom of first cylinder body are fixed together with the outside of first convex platform and first lower convex platform respectively, and first lower convex platform comprises first step and the second step that the from-inner-to-outer height increases in regular turn; First oil inlet passage is arranged on first step, inner cylinder body comprises second convex platform, second lower convex platform, first outer lug boss and second cylinder body, the outside of the upper end of second cylinder body and second convex platform is fixed together, the outer upper of the lower end of second cylinder body and second lower convex platform is fixed together, the outside, lower end of second cylinder body is fixed together with first outer lug boss, the upper end of second cylinder body is sleeved in first convex platform and can moves up and down, first outer lug boss is sleeved in the middle part of first cylinder body, the bottom of second lower convex platform is sitting on the second step, first outer lug boss, first cylinder body, form first cavity between second cylinder body and first convex platform, second oil inlet passage that is connected with first cavity is arranged in first cylinder body, central shaft comprises upper binding head, the axis body and second outer lug boss, the lower end of upper binding head and the upper end of axis body are fixed together, the upper and lower of axis body is set in second convex platform and second lower convex platform and can moves up and down, the bottom of axis body is sitting on the first step and blocks first oil inlet passage, second outer lug boss is sleeved in the middle part of second cylinder body, second outer lug boss, second convex platform, form second cavity between second cylinder body and the axis body, the 3rd oil inlet passage that is connected with second cavity is arranged in second cylinder body, second outer lug boss, axis body, form the spring installation cavity between second cylinder body and second lower convex platform, pressure spring is positioned at the spring installation cavity and is sleeved on the axis body, the upper end of pressure spring withstands on the bottom of second outer lug boss, the lower end of pressure spring withstands on the top of second lower convex platform, and the outlet passageway that is connected and is connected with the outside with the spring installation cavity is arranged on second cylinder body.
2. telescopic hydraulic cylinder according to claim 1 is characterized in that between the axis body and second lower convex platform seal ring being installed.
3. telescopic hydraulic cylinder according to claim 1 and 2 is characterized in that between second outer lug boss and second cylinder body seal ring being installed.
4. telescopic hydraulic cylinder according to claim 1 and 2 is characterized in that between first outer lug boss and first cylinder body seal ring being installed.
5. telescopic hydraulic cylinder according to claim 3 is characterized in that between first outer lug boss and first cylinder body seal ring being installed.
6. telescopic hydraulic cylinder according to claim 3 is characterized in that between the axis body and second convex platform seal ring being installed.
7. telescopic hydraulic cylinder according to claim 4 is characterized in that between the axis body and second convex platform seal ring being installed.
8. telescopic hydraulic cylinder according to claim 5 is characterized in that between the axis body and second convex platform seal ring being installed.
9. according to the telescopic hydraulic cylinder of claim described 5, it is characterized in that between first convex platform and second cylinder body seal ring being installed.
10. telescopic hydraulic cylinder according to claim 8 is characterized in that between first convex platform and second cylinder body seal ring being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010262524 CN101915251B (en) | 2010-08-25 | 2010-08-25 | Telescopic hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010262524 CN101915251B (en) | 2010-08-25 | 2010-08-25 | Telescopic hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101915251A true CN101915251A (en) | 2010-12-15 |
| CN101915251B CN101915251B (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010262524 Active CN101915251B (en) | 2010-08-25 | 2010-08-25 | Telescopic hydraulic cylinder |
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| Country | Link |
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| CN (1) | CN101915251B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864092A (en) * | 2016-05-27 | 2016-08-17 | 广东美的环境电器制造有限公司 | Height adjustment device for fan and fan with height adjustment device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2903515Y (en) * | 2006-01-25 | 2007-05-23 | 上海金铸机械制造有限公司 | Multi step telescoping hydraulic cylinder |
| CN201326603Y (en) * | 2008-11-12 | 2009-10-14 | 娄底市中兴液压件有限公司 | Telescopic cylinder |
| CN201407232Y (en) * | 2009-05-16 | 2010-02-17 | 阜新市祥泽液压机械有限公司 | Telescopic sleeve hydraulic cylinder |
| CN201747697U (en) * | 2010-08-25 | 2011-02-16 | 中国石油集团西部钻探工程有限公司 | Telescopic hydraulic cylinder |
-
2010
- 2010-08-25 CN CN 201010262524 patent/CN101915251B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2903515Y (en) * | 2006-01-25 | 2007-05-23 | 上海金铸机械制造有限公司 | Multi step telescoping hydraulic cylinder |
| CN201326603Y (en) * | 2008-11-12 | 2009-10-14 | 娄底市中兴液压件有限公司 | Telescopic cylinder |
| CN201407232Y (en) * | 2009-05-16 | 2010-02-17 | 阜新市祥泽液压机械有限公司 | Telescopic sleeve hydraulic cylinder |
| CN201747697U (en) * | 2010-08-25 | 2011-02-16 | 中国石油集团西部钻探工程有限公司 | Telescopic hydraulic cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864092A (en) * | 2016-05-27 | 2016-08-17 | 广东美的环境电器制造有限公司 | Height adjustment device for fan and fan with height adjustment device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101915251B (en) | 2012-09-19 |
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Effective date of registration: 20201106 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 834000 the Xinjiang Uygur Autonomous Region Karamay Hongyan Road No. 80 West Karamay Drilling Drilling Technology Research Institute Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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