CN102374206B - Oil cylinder with locking device - Google Patents
Oil cylinder with locking device Download PDFInfo
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- CN102374206B CN102374206B CN201010252881.8A CN201010252881A CN102374206B CN 102374206 B CN102374206 B CN 102374206B CN 201010252881 A CN201010252881 A CN 201010252881A CN 102374206 B CN102374206 B CN 102374206B
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Abstract
The invention discloses an oil cylinder with a locking device. The oil cylinder comprises a cylinder barrel and a piston rod, wherein the middle of the cylinder barrel is provided with a hollow internal guide pillar, and the top of the cylinder barrel is provided with a locknut; the interior of the cylinder barrel is provided with a lead screw separating barrel with a thread, the outer wall of one end of the lead screw separating barrel is slidingly connected with the inner wall of the cylinder barrel, one end with the thread is connected with a top wheel head and a piston rod end cover which are connected together; the piston rod end cover is connected with the piston rod, the outer wall of the piston rod and the inner wall of the lead screw separating barrel form a gap, and a cavity is formed by the inner wall of the piston rod and the outer wall of the internal guide pillar; the bottom of the cavity is provided with a guide sleeve which is fixedly connected with the piston rod and slidingly connected with the internal guide pillar, and the top of the cavity is provided with a piston which is slidingly connected with the piston rod and fixedly connected with the internal guide pillar; and a small cavity is formed by the piston and the piston rod end cover, and the small cavity is communicated with the gap through a diversion hole formed on the piston rod. The oil cylinder provided by the invention has the advantages that the oil cylinder integrates the functions of a hydraulic cylinder and a mechanical lifting jack, the structure is compact, the physical dimension and installation space are small, and the oil cylinder is provided with a mechanical locking device.
Description
Technical field
The present invention relates to the hydraulic pressure installation of oil-well rig or well repairing machine, particularly a kind of oil cylinder of locking device.
Background technique
For the jacking cylinder on oil-well rig or well repairing machine, it is a kind of base jacking leveling system of rig.The jacking cylinder often using in the world at present, has following defect:
1. a KDC pulls jacking cylinder (seeing Fig. 1), there is double-action, band mechanical locking device, it extends the common screw mandrel of processing by oil cylinder pot type piston bar, common screw mandrel length is 1 times of left and right of oil cylinder pot type piston pole length, makes the boundary dimension of whole oil cylinder longer;
2. the base jacking cylinder (seeing Fig. 2) of the original rig of Russia, machining screw on pot type piston bar, oil cylinder boundary dimension is shorter, but oil cylinder is single-acting, oil cylinder can not lean on fluid power to retract in unloaded.
3. a conventional base jacking cylinder (seeing Fig. 3), oil cylinder boundary dimension is shorter, but is not with mechanical locking device, can not play the effect of mechanic jacks.
Summary of the invention
The object of the invention is to, a kind of oil cylinder of locking device is provided, this oil cylinder boundary dimension is little, and the function of integrated two-way cylinder and mechanical interlocking nut is in one.
The object of the invention is by adopting following technological scheme to realize:
A kind of oil cylinder of locking device, comprise cylinder barrel and piston rod, described cylinder barrel middle part is provided with the inner guiding post of hollow, described cylinder barrel top is provided with locking nut, described cylinder barrel inside is also provided with threaded screw mandrel every cylinder, described screw mandrel is slidably connected every outer cylinder and the described cylinder barrel inner cylinder of cylinder, described screw mandrel is connected with piston rod end cap with the top wheel head linking together every the threaded one end of cylinder, described piston rod end cap is connected with piston rod, described piston rod outer cylinder and described screw mandrel form gap every cylinder inner cylinder, described piston rod inner cylinder and described inner guiding post outer cylinder form cavity, the bottom of described cavity is provided with the guide sleeve that is fixedly connected with described piston rod and is slidably connected with described inner guiding post, the top of described cavity is provided with the piston that is slidably connected and is fixedly connected with described inner guiding post with described piston rod, described piston and described piston rod end cap form areola, described areola is communicated with described gap by the pod apertures having on described piston rod.
Described cylinder barrel outer cylinder is provided with the location deck that connects described locking nut, described location deck is fixed on described cylinder barrel by screw and packing ring, guider screw is fixed on the deck of described location by screw thread, and described screw mandrel is stretched in the screw thread guiding groove of cylinder in its termination.
Described location deck has been threaded connection lock screw, and the termination of described lock screw is stretched in the circle draw-in groove that described locking nut outer cylinder has.
Described lock screw connects location deck and locating groove, and described location deck is blocked in described locating groove upper end, and described locking nut is blocked in lower end.
Described screw mandrel is " protruding " font every cylinder outer cylinder, its outer wall falling in is processed with screw thread, and and forming small oil cavity between described cylinder barrel inner cylinder, its outstanding outer cylinder is slidably connected with seal ring and described cylinder barrel with guidance tape and the first bidirectional piston by first piston seal ring, first piston.
In the lower end cylinder barrel inner cylinder of described locking nut, lead ring and gland are installed.
The screw thread of described screw mandrel on cylinder is trapezoidal thread.
Described guide sleeve is slidably connected with guidance tape and described inner guiding post with seal ring and piston rod by two-way rod seal circle, piston rod.
Described piston passes through the second piston packing, the second piston guidance tape, and the second bidirectional piston is slidably connected with seal ring and described piston rod; Described piston is fixedly connected with described inner guiding post with shaft block ring by axle card, card cap.
Described top wheel head is connected by hole card, Steel Cable Baffle Ring and baffle ring with described piston rod end cap.
Owing to having adopted technique scheme, the invention has the beneficial effects as follows:
1. the screw mandrel in cylinder barrel is provided with mechanical interlocking nut every the end of cylinder, makes this oil cylinder play the effect of mechanic jacks.
2. piston rod and screw mandrel are communicated with by the pod apertures on piston rod every the cavity forming between the gap forming between cylinder and piston and piston rod end cap, make screw mandrel every cylinder exterior edge face, guide sleeve exterior edge face and piston rod end cap interior edge face, form the fluid power acting surface of cylinder thrust, the fluid power acting surface of pulling force is piston interior edge face, make like this structure of oil cylinder very compact, diameter and the length of greatly having dwindled oil cylinder.
3. in the inner wall of cylinder of jack panel lower end, lead ring and gland are installed, have reduced the friction damage of leading screw between drum outer wall and cylinder barrel inside.
4. guider screw termination is stretched into into screw mandrel in the screw thread guiding groove of cylinder, can prevent that screw mandrel is every the rotation of cylinder.
5. lock screw termination is stretched in locking nut draw-in groove, can prevent the rotation of locking nut.
6. location deck is blocked in locating groove upper end, and locking nut is blocked in lower end, can prevent that piston rod from gliding after retraction.
Accompanying drawing explanation
Fig. 1 is that KDC pulls jacking cylinder.
Fig. 2 is the base jacking cylinder of Russian original rig.
Fig. 3 is conventional base jacking cylinder.
Fig. 4 is that the present invention partly cuts open structural representation.
Fig. 5 is Fig. 4 plan view.
Reference character: the 1st, valve seat, the 2nd, cylinder body, the 3rd, first piston seal ring, the 4th, first piston guidance tape, 5 first bidirectional piston seal rings, the 6th, screw mandrel is every cylinder, the 7th, gap, the 8th, piston rod, the 9th, inner guiding post, the 10th, cylinder barrel, the 11st, piston, the 12nd, lead ring, the 13rd, pod apertures, the 14th, guider screw, the 15th, location deck, the 16th, screw, the 17th, packing ring, the 18th, gland, the 19th, lock screw, the 20th, locating groove, the 21st, locking nut, the 22nd, areola, the 23rd, hole card, the 24th, top wheel head, the 25th, Steel Cable Baffle Ring, the 26th, baffle ring, the 27th, piston rod end cap, the 28th, piston rod end cap interior edge face, the 29th, shaft block ring, the 30th, card cap, the 31st, axle card, 32 is second piston packings, 33 is second piston guidance tapes, 34 is second bidirectional piston seal rings, the 35th, piston interior edge face, the 36th, cavity, the 37th, guide sleeve, the 38th, two-way rod seal circle, the 39th, piston rod seal ring, the 40th, piston rod guidance tape, the 41st, guide sleeve exterior edge face, the 42nd, screw mandrel is every cylinder exterior edge face, the 43rd, guiding groove, the 44th, draw-in groove, 1A is pot type piston bar, 2A is common screw mandrel, 3A is common lock jack panel.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of jack cylinder of locking device, comprise cylinder barrel 10, cylinder barrel 10 tops are provided with locking nut 21, the bottom of cylinder barrel 10 is connected with cylinder body 2, and cylinder barrel 10 middle parts are provided with inner guiding post 9, and inner guiding post 9 is threaded connection and is integrated with cylinder body 2, cylinder body 2 is installed on valve seat 1, and cylinder body 2 center bottom are provided with locknut and hanger.In cylinder barrel 10, be provided with screw mandrel every cylinder 6, screw mandrel is " protruding " font every cylinder 6 outer cylinders, its outer wall falling in is processed with trapezoidal thread, and be processed with guiding groove 43, between the outer cylinder that it falls in and cylinder barrel 10 inner cylinder, form small oil cavity, its outstanding outer cylinder is slidably connected with guidance tape 4 and cylinder barrel 10 with seal ring 5 and piston by first piston seal ring 3, the first bidirectional piston, has the filler opening being connected with small oil cavity on cylinder barrel 10.On cylinder barrel 10 inwalls of locking nut 21 lower ends, lead ring 12 and gland 18 are installed, can reduce screw mandrel every the friction damage of cylinder 6 outer cylinders and cylinder barrel 10 inner cylinder.Location deck 15 is fixed on the outer cylinder of cylinder barrel 10 by screw 16 and packing ring 17, by guider screw 14, connects cylinder barrel 10 and lead ring 12, and the termination of guider screw 14 is stretched in the guiding groove 43 of trapezoidal thread, to prevent that screw mandrel is every the rotation of cylinder 6.
The inner cylinder of locking nut 21 is connected every cylinder 6 with screw mandrel by screw thread, the outer cylinder of locking nut connects locating groove 20 and location deck 15 by lock screw 19, location deck 15 is blocked in the upper end of locating groove 20, and locking nut 21 is blocked in lower end, to prevent that piston rod from gliding after retraction.The termination of lock screw 19 is stretched in the circle draw-in groove 44 having into locking nut 21 outer cylinders, can prevent the rotation of locking nut 21.
At screw mandrel, every the inside of cylinder 6, be provided with piston rod 8, piston rod 8 outer cylinders and screw mandrel form gap 7 every cylinder 6 inner cylinder, piston rod 8 inner cylinder and inner guiding post 9 outer cylinders form cavity 36, the bottom of cavity 36 is provided with the guide sleeve 37 that is fixedly connected with piston rod 8 and is slidably connected with inner guiding post 9, and guide sleeve 37 is slidably connected with guidance tape 40 and inner guiding post 9 with seal ring 39 and piston rod by two-way rod seal circle 38, piston rod.
The top of cavity 36 is provided with the piston 11 that is slidably connected and is fixedly connected with inner guiding post 9 with piston rod 8, and piston 11 is slidably connected with seal ring 34 and piston rod 8 with guidance tape 33, the second bidirectional pistons by the second piston packing 32, the second pistons; Piston 11 is fixedly connected with inner guiding post 9 with shaft block ring 29 by axle card 31, card cap 30.
Piston 11 forms areola 22 with piston rod end cap 27, and areola 22 is communicated with gap 7 by the pod apertures 13 having on piston rod 8.Piston rod end cap 27 is fixedly connected with the top of piston rod 8 and every cylinder 6, is connected with screw mandrel by O-ring seals, piston rod end cap 27 and top wheel 24 achieves a fixed connection by hole card 23, baffle ring 26 and Steel Cable Baffle Ring 25, and top wheel 13 outer side surface are connected every cylinder 4 with screw mandrel by screw.
In the present invention, top wheel 24, piston rod end cap 27, screw mandrel connects as one every cylinder 6 and piston rod 8, can in the cavity of cylinder barrel 10 and inner guiding post 9 formation, slide, screw mandrel is provided with mechanical interlocking nut 21 every the end of cylinder 6, the main bearing thrust of jacking cylinder, pulling force effect overcomes oil cylinder deadweight while being mainly retract cylinder, less, thereby cylinder barrel and piston rod are carried out after composite design, make screw mandrel every cylinder exterior edge face 42, guide sleeve exterior edge face 41 and piston rod end cap interior edge face 28 form the fluid power acting surface of cylinder thrust, the fluid power acting surface of pulling force is piston interior edge face 35, make like this structure of oil cylinder very compact, diameter and the length of oil cylinder have greatly been dwindled.
Claims (10)
1. the oil cylinder of a locking device, comprise cylinder barrel (10) and piston rod (8), described cylinder barrel (10) middle part is provided with the inner guiding post (9) of hollow, described cylinder barrel (10) top is provided with locking nut (21), it is characterized in that, described cylinder barrel (10) inside is also provided with threaded screw mandrel every cylinder (6), described screw mandrel is slidably connected every cylinder (6) outer cylinder and described cylinder barrel (10) inner cylinder, described screw mandrel is connected with piston rod end cap (27) with the top wheel head (24) linking together every the threaded one end of cylinder (6), described piston rod end cap (27) is connected with piston rod (8), described piston rod (8) outer cylinder and described screw mandrel form gap (7) every cylinder (6) inner cylinder, described piston rod (8) inner cylinder and described inner guiding post (9) outer cylinder form cavity (36), the bottom of described cavity (36) is provided with the guide sleeve (37) that is fixedly connected with described piston rod (8) and is slidably connected with described inner guiding post (9), the top of described cavity (36) is provided with the piston (11) that is slidably connected and is fixedly connected with described inner guiding post (9) with described piston rod (8), described piston (11) forms areola (22) with described piston rod end cap (27), described areola (22) is communicated with described gap (7) by the pod apertures (13) having on described piston rod (8).
2. the oil cylinder of a kind of locking device according to claim 1, it is characterized in that, described cylinder barrel (10) outer cylinder is provided with the location deck (15) that connects described locking nut (21), described location deck (15) is fixed on described cylinder barrel (10) by screw (16) and packing ring (17), it is upper that guider screw (14) is fixed on described location deck (15) by screw thread, and described screw mandrel is stretched in the screw thread guiding groove (43) of cylinder (6) in its termination.
3. the oil cylinder of a kind of locking device according to claim 2, it is characterized in that, described location deck (15) has been threaded connection lock screw (19), and the termination of described lock screw (19) is stretched in the circle draw-in groove (44) that described locking nut (21) outer cylinder has.
4. the oil cylinder of a kind of locking device according to claim 3, it is characterized in that, described lock screw (19) connects location deck (15) and locating groove (20), and described location deck (15) is blocked in described locating groove (20) upper end, and described locking nut (21) is blocked in lower end.
5. the oil cylinder of a kind of locking device according to claim 1, it is characterized in that, described screw mandrel is " protruding " font every cylinder (6) outer cylinder, its outer wall falling in is processed with screw thread, and and forming small oil cavity between described cylinder barrel (10) inner cylinder, its outstanding outer cylinder is by first piston seal ring (3), for first piston, guidance tape (4) and the first seal ring for bidirectional piston (5) are slidably connected with described cylinder barrel (10).
6. the oil cylinder of a kind of locking device according to claim 1, is characterized in that, in lower end cylinder barrel (10) inner cylinder of described locking nut (21), lead ring (12) and gland (18) is installed.
7. according to the oil cylinder of a kind of locking device described in claim 1,2 or 6, it is characterized in that, the screw thread of described screw mandrel on cylinder (6) is trapezoidal thread.
8. the oil cylinder of a kind of locking device according to claim 1, it is characterized in that, described guide sleeve (37) by two-way rod seal circle (38), for piston rod seal ring (39) and for piston rod guidance tape (40) and described inner guiding post (9) be slidably connected.
9. the oil cylinder of a kind of locking device according to claim 1, it is characterized in that, described piston (11) passes through the second piston packing (32), the second guidance tape for piston (33), and the second seal ring for bidirectional piston (34) is slidably connected with described piston rod (8); Described piston (11) is fixedly connected with described inner guiding post (9) with shaft block ring (29) by axle card (31), card cap (30).
10. the oil cylinder of a kind of locking device according to claim 1, is characterized in that, described top wheel head (24) is connected by hole card (23), Steel Cable Baffle Ring (25) and baffle ring (26) with described piston rod end cap (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252881.8A CN102374206B (en) | 2010-08-13 | 2010-08-13 | Oil cylinder with locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010252881.8A CN102374206B (en) | 2010-08-13 | 2010-08-13 | Oil cylinder with locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102374206A CN102374206A (en) | 2012-03-14 |
| CN102374206B true CN102374206B (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010252881.8A Active CN102374206B (en) | 2010-08-13 | 2010-08-13 | Oil cylinder with locking device |
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| CN (1) | CN102374206B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104222470A (en) * | 2013-06-18 | 2014-12-24 | 洛阳志振冷食机器厂 | Double-acting type pressure hydraulic cylinder |
| CN103388325B (en) * | 2013-08-05 | 2015-06-10 | 四川宏华石油设备有限公司 | Connecting and unloading device and application method thereof |
| CN104154070A (en) * | 2014-08-22 | 2014-11-19 | 实用动力(中国)工业有限公司 | Double-acting nut-locking hydrocylinder |
| CN104763712B (en) * | 2015-03-19 | 2017-05-17 | 地质矿产廊坊聚力岩土工程科技开发公司 | Self-propelled self-tensioned fixing mechanism |
| CN107355439B (en) * | 2017-08-08 | 2023-05-16 | 华南理工大学 | Integrated internal expansion type mechanical locking hydraulic support leg and operation method thereof |
| CN108757638B (en) * | 2018-06-11 | 2019-10-25 | 江苏万川液压机械设备有限公司 | The tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN109250398A (en) * | 2018-10-15 | 2019-01-22 | 上海嘉峥机械有限公司 | A kind of cylinder connector locking gear for Automatic Conveying |
| CN110356545A (en) * | 2019-08-21 | 2019-10-22 | 成都弗格森液压机电有限公司 | A kind of unmanned plane undercarriage control retaining mechanism |
| CN114671365A (en) * | 2022-04-19 | 2022-06-28 | 东方空间(西安)宇航技术有限公司 | Supporting structure and adjusting platform with same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439080A (en) * | 2000-06-27 | 2003-08-27 | 液压产品系统有限公司 | Double acting hydraulic cylinder with axial locking device |
| CN101776106A (en) * | 2010-01-19 | 2010-07-14 | 上海建工（集团）总公司 | Steel support shaft stress adaptive system real-time compensating hydraulic oil cylinder for base pit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3881589B2 (en) * | 2002-02-13 | 2007-02-14 | 株式会社コスメック | Cylinder device |
| JP4308540B2 (en) * | 2003-01-28 | 2009-08-05 | 株式会社コガネイ | Rodless cylinder unit |
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2010
- 2010-08-13 CN CN201010252881.8A patent/CN102374206B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439080A (en) * | 2000-06-27 | 2003-08-27 | 液压产品系统有限公司 | Double acting hydraulic cylinder with axial locking device |
| CN101776106A (en) * | 2010-01-19 | 2010-07-14 | 上海建工（集团）总公司 | Steel support shaft stress adaptive system real-time compensating hydraulic oil cylinder for base pit |
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| CN102374206A (en) | 2012-03-14 |
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