CN102374206A - Oil cylinder with locking device - Google Patents
Oil cylinder with locking device Download PDFInfo
- Publication number
- CN102374206A CN102374206A CN2010102528818A CN201010252881A CN102374206A CN 102374206 A CN102374206 A CN 102374206A CN 2010102528818 A CN2010102528818 A CN 2010102528818A CN 201010252881 A CN201010252881 A CN 201010252881A CN 102374206 A CN102374206 A CN 102374206A
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- cylinder
- piston rod
- piston
- oil cylinder
- screw
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- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 8
- 210000004883 areola Anatomy 0.000 claims description 7
- 210000004907 gland Anatomy 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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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 oil cylinder of the hydraulic pressure installation of oil-well rig or well repairing machine, particularly a kind of tight device with lock.
Background technique
Being used for the jacking cylinder on oil-well rig or the well repairing machine, is a kind of base jacking leveling system of rig.The normal in the world at present jacking cylinder that uses has following defective:
1. a KDC pulls the jacking cylinder (see figure 1); Have double-action, the band mechanical locking device, it prolongs the common screw mandrel of processing with oil cylinder pot type piston bar; Common screw mandrel length is about 1 times of oil cylinder pot type piston pole length, makes that the boundary dimension of whole oil cylinder is longer;
2. the base jacking cylinder (see figure 2) of the original rig of Russia, machining screw on the pot type piston bar, oil cylinder boundary dimension is shorter, but oil cylinder is single-acting, oil cylinder can not lean on the fluid power withdrawal in zero load.
3. conventional base jacking cylinder (see figure 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 objective of the invention is to, a kind of oil cylinder of tight device with lock 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 objective of the invention is through adopting following technological scheme to realize:
A kind of oil cylinder of tight device with lock; Comprise cylinder barrel and piston rod, said cylinder barrel middle part is equipped with the inner guiding post of hollow, and said cylinder barrel top is equipped with locking nut; Said cylinder barrel inside also is provided with threaded screw mandrel at a distance from tube; Said screw mandrel is slidingly connected at a distance from the outer cylinder and the said cylinder barrel inner cylinder of tube, and said screw mandrel is connected with the piston rod end cap with the top wheel head that links together at a distance from the threaded end of tube, and said piston rod end cap is connected with piston rod; Said piston rod outer cylinder and said screw mandrel form the gap at a distance from the tube inner cylinder; Said piston rod inner cylinder and said inner guiding post outer cylinder form cavity, and the bottom of said cavity is equipped with the guide sleeve that is fixedly connected with said piston rod and is slidingly connected with said inner guiding post, and the top of said cavity is equipped with the piston that is slidingly connected and is fixedly connected with said inner guiding post with said piston rod; Said piston and said piston rod end cap form areola, and said areola is communicated with said gap through the pod apertures that has on the said piston rod.
Said cylinder barrel outer cylinder is provided with the location deck that connects said locking nut; Said location deck is fixed on the said cylinder barrel through screw and packing ring; Guider screw is fixed on the deck of said location through screw thread, and said screw mandrel is stretched in the screw thread guiding groove of tube in its termination.
Said location deck is through the lock screw that has been threaded, and the termination of said lock screw is stretched in the circle draw-in groove that said locking nut outer cylinder has.
Said lock screw connects location deck and locating groove, and said location deck is blocked in said locating groove upper end, and said locking nut is blocked in the lower end.
Said screw mandrel is " protruding " font at a distance from the tube outer cylinder; Its outer wall that falls in is processed with screw thread; And and forming small oil cavity between the said cylinder barrel inner cylinder, its outstanding outer cylinder is slidingly connected with seal ring and said cylinder barrel with the guidance tape and first bidirectional piston through first piston seal ring, first piston.
On the lower end cylinder barrel inner cylinder of said locking nut lead ring and gland are installed.
The screw thread of said screw mandrel on tube is trapezoidal thread.
Said guide sleeve is slidingly connected with guidance tape and said inner guiding post with seal ring and piston rod through two-way rod seal circle, piston rod.
Said piston is through second piston packing, and second piston is used guidance tape, and second bidirectional piston is slidingly connected with seal ring and said piston rod; Said piston is fixedly connected with said inner guiding post with shaft block ring through axle card, card cap.
Said top wheel head is connected through hole card, Steel Cable Baffle Ring and baffle ring with said piston rod end cap.
Owing to adopted technique scheme, the invention has the beneficial effects as follows:
1. the screw mandrel in the cylinder barrel is equipped with the mechanical interlocking nut at a distance from the end of tube, makes this oil cylinder play the effect of mechanic jacks.
2. piston rod and screw mandrel are communicated with through the pod apertures on the piston rod at a distance from the cavity that forms between the gap that forms between the tube and piston and the piston rod end cap; Make screw mandrel form the fluid power acting surface of cylinder thrust at a distance from tube exterior edge face, guide sleeve exterior edge face and piston rod end cap interior edge face; The fluid power acting surface of pulling force is the piston interior edge face; Make the structure of oil cylinder very compact like this, the diameter and the length of having dwindled oil cylinder greatly.
3. on 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. screw mandrel is into stretched in the screw thread guiding groove of tube in the guider screw termination, can prevent the rotation of screw mandrel at a distance from tube.
5. the lock screw termination is stretched into in the locking nut draw-in groove, can prevent the rotation of locking nut.
6. the location deck is blocked in the locating groove upper end, and locking nut is blocked in the lower end, can prevent that piston rod from gliding after withdrawal.
Description of drawings
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, the first piston seal ring, the 4th, first piston is used guidance tape, and 5 first bidirectional pistons are used seal ring, and the 6th, screw mandrel is at a distance from tube; 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, the axle card, 32 is second piston packings, and 33 is that second piston is used guidance tape, and 34 is that second bidirectional piston is used seal ring, the 35th, piston interior edge face, the 36th, cavity; The 37th, guide sleeve, the 38th, two-way rod seal circle, the 39th, piston rod is used seal ring, and the 40th, piston rod is used guidance tape, and the 41st, the guide sleeve exterior edge face, the 42nd, screw mandrel is at a distance from the tube exterior edge face; The 43rd, guiding groove, the 44th, draw-in groove, 1A are the pot type piston bars, and 2A is common screw mandrel, and 3A is the common lock jack panel.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
As shown in Figure 1, a kind of jack cylinder of tight device with lock comprises cylinder barrel 10; Cylinder barrel 10 tops are equipped with locking nut 21; The bottom of cylinder barrel 10 is connected with cylinder body 2, and cylinder barrel 10 middle parts are equipped with inner guiding post 9, and inner guiding post 9 and cylinder body 2 are through being threaded to one; Cylinder body 2 is installed on the valve seat 1, and cylinder body 2 center bottom are equipped with locknut and hanger.Be provided with screw mandrel in the cylinder barrel 10 at a distance from tube 6; Screw mandrel is " protruding " font at a distance from tube 6 outer cylinders; Its outer wall that falls in is processed with trapezoidal thread, and is processed with guiding groove 43, forms small oil cavity between outer cylinder that it falls in and cylinder barrel 10 inner cylinder; Its outstanding outer cylinder is slidingly connected with guidance tape 4 and cylinder barrel 10 with seal ring 5 and piston through first piston seal ring 3, first bidirectional piston, has the filler opening that is connected with small oil cavity on the cylinder barrel 10.Lead ring 12 and gland 18 are installed on cylinder barrel 10 inwalls of locking nut 21 lower ends, can reduce the friction damage of screw mandrel at a distance from tube 6 outer cylinders and cylinder barrel 10 inner cylinder.Location deck 15 is fixed on the outer cylinder of cylinder barrel 10 through screw 16 and packing ring 17, connects cylinder barrels 10 and lead rings 12 through guider screw 14, and the termination of guider screw 14 is stretched in the guiding groove 43 of trapezoidal thread into, to prevent the rotation of screw mandrel at a distance from tube 6.
The inner cylinder of locking nut 21 is connected at a distance from tube 6 with screw mandrel through screw thread; The outer cylinder of locking nut connects locating groove 20 and location deck 15 through lock screw 19; Location deck 15 is blocked in the upper end of locating groove 20, and locking nut 21 is blocked in the lower end, glides after withdrawal to prevent piston rod.The termination of lock screw 19 is stretched in the circle draw-in groove 44 that into locking nut 21 outer cylinders have, and can prevent the rotation of locking nut 21.
At a distance from the set inside of tube 6 piston rod 8 is arranged at screw mandrel; Piston rod 8 outer cylinders and screw mandrel form gap 7 at a distance from tube 6 inner cylinder; Piston rod 8 inner cylinder and inner guiding post 9 outer cylinders form cavity 36; The bottom of cavity 36 is equipped with the guide sleeve 37 that is fixedly connected with piston rod 8 and is slidingly connected with inner guiding post 9, and guide sleeve 37 is slidingly connected with guidance tape 40 and inner guiding post 9 with seal ring 39 and piston rod through two-way rod seal circle 38, piston rod.
The top of cavity 36 is equipped with the piston 11 that is slidingly connected and is fixedly connected with inner guiding post 9 with piston rod 8, and piston 11 is slidingly connected with seal ring 34 and piston rod 8 with guidance tape 33, the second bidirectional pistons through second piston packing, 32, the second pistons; Piston 11 is fixedly connected with inner guiding post 9 with shaft block ring 29 through 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 through the pod apertures 13 that has on the piston rod 8.Piston rod end cap 27 is fixedly connected with the top of piston rod 8 and is connected at a distance from tube 6 with screw mandrel through O-ring seals; Piston rod end cap 27 and top wheel 24 achieve a fixed connection through hole card 23, baffle ring 26 and Steel Cable Baffle Ring 25, and top wheel 13 outer side surface are connected at a distance from tins 4 through screw and screw mandrel.
Among the present invention, top wheel 24, piston rod end cap 27, screw mandrel connect as one at a distance from tube 6 and piston rod 8, can in the cavity that cylinder barrel 10 and inner guiding post 9 form, slide; Screw mandrel is equipped with mechanical interlocking nut 21 at a distance from the end of tube 6, the main bearing thrust of jacking cylinder, and tension overcomes the oil cylinder deadweight when mainly being retract cylinder; Less; Thereby after cylinder barrel and piston rod carried out composite design, making screw mandrel form the fluid power acting surface of cylinder thrusts at a distance from a tube exterior edge face 42, guide sleeve exterior edge face 41 and piston rod end cap interior edge face 28, the fluid power acting surface of pulling force is a piston interior edge face 35; Make the structure of oil cylinder very compact like this, the diameter and the length of having dwindled oil cylinder greatly.
Claims (10)
1. the oil cylinder of a tight device with lock; Comprise cylinder barrel (10) and piston rod (8); Said cylinder barrel (10) middle part is equipped with the inner guiding post (9) of hollow; Said cylinder barrel (10) top is equipped with locking nut (21); It is characterized in that said cylinder barrel (10) inside also is provided with threaded screw mandrel at a distance from tube (6), said screw mandrel is slidingly connected at a distance from tube (6) outer cylinder and said cylinder barrel (10) inner cylinder; Said screw mandrel is connected with piston rod end cap (27) with the top wheel head (24) that links together at a distance from tube (6) threaded end; Said piston rod end cap (27) is connected with piston rod (8), and said piston rod (8) outer cylinder and said screw mandrel form gap (7) at a distance from tube (6) inner cylinder, and said piston rod (8) inner cylinder and said inner guiding post (9) outer cylinder form cavity (36); The bottom of said cavity (36) is equipped with the guide sleeve (37) that is fixedly connected with said piston rod (8) and is slidingly connected with said inner guiding post (9); The top of said cavity (36) is equipped with the piston (11) that is slidingly connected and is fixedly connected with said inner guiding post (9) with said piston rod (8), and said piston (11) forms areola (22) with said piston rod end cap (27), and said areola (22) is communicated with said gap (7) through the pod apertures (13) that has on the said piston rod (8).
2. the oil cylinder of a kind of tight device with lock according to claim 1; It is characterized in that; Said cylinder barrel (10) outer cylinder is provided with the location deck (15) that connects said locking nut (21); Said location deck (15) is fixed on the said cylinder barrel (10) through screw (16) and packing ring (17), and guider screw (14) is fixed on the said location deck (15) through screw thread, and said screw mandrel is stretched in the screw thread guiding groove (43) of tube (6) in its termination.
3. the oil cylinder of a kind of tight device with lock according to claim 2; It is characterized in that; Said location deck (15) is through the lock screw that has been threaded (19), and the termination of said lock screw (19) is stretched in the circle draw-in groove (44) that said locking nut (21) outer cylinder has.
4. the oil cylinder of a kind of tight device with lock according to claim 3; It is characterized in that; Said lock screw (19) connects location deck (15) and locating groove (20), and said location deck (15) is blocked in said locating groove (20) upper end, and said locking nut (21) is blocked in the lower end.
5. the oil cylinder of a kind of tight device with lock according to claim 1; It is characterized in that; Said screw mandrel is " protruding " font at a distance from tube (6) outer cylinder; Its outer wall that falls in is processed with screw thread, and and said cylinder barrel (10) inner cylinder between form small oil cavity, its outstanding outer cylinder is slidingly connected with seal ring (5) and said cylinder barrel (10) with the guidance tape (4) and first bidirectional piston through first piston seal ring (3), first piston.
6. the oil cylinder of a kind of tight device with lock according to claim 1 is characterized in that, on lower end cylinder barrel (10) inner cylinder of said locking nut (21) lead ring (12) and gland (18) is installed.
7. according to the jack cylinder of claim 1,2 or 6 described a kind of tight devices with lock, it is characterized in that the screw thread of said screw mandrel on tube (6) is trapezoidal thread.
8. the oil cylinder of a kind of tight device with lock according to claim 1 is characterized in that, said guide sleeve (37) is slidingly connected with guidance tape (40) and said inner guiding post (9) with seal ring (39) and piston rod through two-way rod seal circle (38), piston rod.
9. the oil cylinder of a kind of tight device with lock according to claim 1 is characterized in that, said piston (11) is through second piston packing (32), and second piston is with guidance tape (33), and second bidirectional piston is slidingly connected with seal ring (34) and said piston rod (8); Said piston (11) is fixedly connected with said inner guiding post (9) with shaft block ring (29) through axle card (31), card cap (30).
10. the oil cylinder of a kind of tight device with lock according to claim 1 is characterized in that, said top wheel head (24) is connected through hole card (23), Steel Cable Baffle Ring (25) and baffle ring (26) with said 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 true CN102374206A (en) | 2012-03-14 |
| CN102374206B CN102374206B (en) | 2014-03-19 |
Family
ID=45793270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010252881.8A Expired - Fee Related CN102374206B (en) | 2010-08-13 | 2010-08-13 | Oil cylinder with locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102374206B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388325A (en) * | 2013-08-05 | 2013-11-13 | 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 |
| CN104222470A (en) * | 2013-06-18 | 2014-12-24 | 洛阳志振冷食机器厂 | Double-acting type pressure hydraulic cylinder |
| CN104763712A (en) * | 2015-03-19 | 2015-07-08 | 地质矿产廊坊聚力岩土工程科技开发公司 | Self-propelled self-tensioned fixing mechanism |
| CN107355439A (en) * | 2017-08-08 | 2017-11-17 | 华南理工大学 | A kind of integrated-type internal-expansion type mechanical interlocking hydraulic leg and its operation method |
| CN108757638A (en) * | 2018-06-11 | 2018-11-06 | 江苏万川高压电气有限公司 | 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 (4)
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| US20030150323A1 (en) * | 2002-02-13 | 2003-08-14 | Kabushiki Kaisha Kosmek | Cylinder assembly |
| 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 |
| JP2004232664A (en) * | 2003-01-28 | 2004-08-19 | Koganei Corp | Rodless cylinder unit |
| 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 |
-
2010
- 2010-08-13 CN CN201010252881.8A patent/CN102374206B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| US20030150323A1 (en) * | 2002-02-13 | 2003-08-14 | Kabushiki Kaisha Kosmek | Cylinder assembly |
| JP2004232664A (en) * | 2003-01-28 | 2004-08-19 | Koganei Corp | Rodless cylinder unit |
| 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 |
Cited By (10)
| 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 |
| CN103388325A (en) * | 2013-08-05 | 2013-11-13 | 四川宏华石油设备有限公司 | Connecting and unloading device and application method thereof |
| 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 |
| CN104763712A (en) * | 2015-03-19 | 2015-07-08 | 地质矿产廊坊聚力岩土工程科技开发公司 | Self-propelled self-tensioned fixing mechanism |
| CN107355439A (en) * | 2017-08-08 | 2017-11-17 | 华南理工大学 | A kind of integrated-type internal-expansion type mechanical interlocking hydraulic leg and its operation method |
| CN108757638A (en) * | 2018-06-11 | 2018-11-06 | 江苏万川高压电气有限公司 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102374206B (en) | 2014-03-19 |
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Granted publication date: 20140319 |