CN103899592A - Step ball lock-up hydraulic cylinder - Google Patents
Step ball lock-up hydraulic cylinder Download PDFInfo
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- CN103899592A CN103899592A CN201410124212.0A CN201410124212A CN103899592A CN 103899592 A CN103899592 A CN 103899592A CN 201410124212 A CN201410124212 A CN 201410124212A CN 103899592 A CN103899592 A CN 103899592A
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Abstract
The invention discloses a step ball lock-up hydraulic cylinder and belongs to the technical field of lock-up hydraulic cylinders, aiming to provide a step closed type lock-up hydraulic cylinder with the feature that any optional stroke thereof can be subjected to mechanical locking automatically. The technical scheme includes that an outer barrel is in threaded connection with a cylinder head, and multiple radial grooves are formed on the inner wall of the outer barrel; an inner barrel is disposed in an inner cavity of the outer barrel and in clearance fit with the inner wall of the outer barrel; a piston rod and a lock piston are arranged in an inner cavity of the inner barrel; one end of the piston rod is in clearance fit with the inner wall of the inner barrel, the other end of the piston rod runs through the cylinder head to be fixed by a nut, the inner wall of the lock piston is in clearance fit with the piston rod, an groove and a boss are arranged on the outer wall of the lock piston, and the boss is in clearance fit with the inner wall of the inner barrel; a steel-wire retainer ring is arranged at the end, away from the cylinder head, of the lock piston, the other end of lock piston is elastically connected with one end of a spring, and the other end of the spring is disposed in an inner cavity of a spring holder; one end of an oil tube penetrates an inner cavity of the piston rod to be communicated with the inner cavity of the inner barrel, and the other end of the oil tube extends out of the inner cavity of the piston rod.
Description
Technical field
There is a grade steel ball locking oil hydraulic cylinder, belong to locking oil hydraulic cylinder technical field.
Background technique
Along with the raising of world's all trades and professions mechanization degree, the more and more extensive existing locking oil hydraulic cylinder of the application of mechanical locking oil hydraulic cylinder is divided into the locking of stroke two ends and needs two kinds of forms of trip segment locking by locked position.Steel ball locking is the locking of stroke two ends, needs trip segment locking to have the forms such as fitting surface interference, outer plug pearl, additional clamping sleeve, screw piston rod, conical surface friction compression.
Outer plug pearl and additional compression lock set are decided to be manual locking, are not suitable with modernization operation.
Screw piston rod is locked as automatic operation, but each root oil hydraulic cylinder requires to have a spcific power mechanism and power source, and spare system complexity, mechanism are huge, do not meet equipment hard-cover and simplify requirement fast.
It is simple that conical surface friction compresses locking framework, but conical surface compression reaction thrust is limited, does not meet large-tonnage armament-related work needs.
Fitting surface interference locking requires very strict to magnitude of interference, magnitude of interference is large, and unlock pressure is large, requires high to oil sources and oil circuit; Magnitude of interference is little, and latching force is little, and it is unreliable to lock, between the magnitude of interference of corresponding tonnage oil cylinder is controlled at several, simultaneously to product raw material, mechanical processing technique, heat treatedly require corresponding raising, cause difficulty of processing large, yield rate is low, is not suitable for the requirement of high-efficient development and Energy Intensity Reduction.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, technical problem to be solved be to provide a kind of need arbitrarily trip segment all can machine automatization locking have a grade enclosed locking oil hydraulic cylinder, meet the special requirement of various equipments.
For solving the problems of the technologies described above, the technical solution adopted in the present invention: (same to claim)
Compared to the prior art the present invention has following beneficial effect.
One, be provided with multiple tracks and can be blocked the radial groove of steel ball by inner cavity of cylinder outside, the radial circumference hole of establishing a circle and place steel ball at inner cylinder tube outer wall, arranges and the lock piston of piston rod Spielpassung at piston rod external diameter, along piston rod cavity, oil pipe is set.At inner cylinder tube during in lockup state, steel ball is stuck between outer cylinder radial groove and inner cylinder tube radial circumference hole, when form between to piston rod and inner cylinder tube along oil pipe anti-chamber (being b chamber) fuel feeding time, oil promotes lock piston and Compress Spring moves axially to cylinder cap one end, when the groove on lock piston external diameter move to steel ball under position, steel ball enters the groove of lock piston external diameter with regard to departing from the groove of outer cylinder, make the top of steel ball lower than the external diameter of inner cylinder tube, now inner cylinder tube is in released state, inner cylinder tube possesses flexible condition, the outlet that pressure oil communicates with piston rod from lock piston is simultaneously flowed out,
Then to the positive chamber forming between piston rod and inner cylinder tube (being a chamber) fuel feeding, inner cylinder tube starts to extend, along with inner cylinder tube reaches a certain precalculated position, positive and negative chamber does not supply pressure oil, lock piston starts to one end axial direction away from cylinder cap under spring action, so steel ball exits from the groove of lock piston gradually, until steel ball moves on the boss of lock piston, steel ball is stuck between outer cylinder radial groove and inner cylinder tube radial circumference hole again, now steel ball is locked by the groove of outer cylinder, inner cylinder tube is also locked by steel ball simultaneously, this enclosed mechanical caging realizing by boss of lock piston is reliable and stable,
Along with steel ball moves to the groove of the diverse location of outer cylinder, can carry out mechanical caging to the trip segment that needs arbitrarily of oil hydraulic cylinder.So, the present invention is by shirtsleeve operation, do not need the additional energy and the element controlled, with regard to the realization of fast and reliable the mechanical caging that needs arbitrarily trip segment to oil hydraulic cylinder, avoided the unreliable problem of locking occurring in the total travel mechanical locking mechanism of prior art, profile of the present invention is succinct simultaneously, compact structure, take up room little, can be widely used in the various equipment that needs arbitrarily trip segment locking.
Two, connect by the one end at inner cylinder tube the support bulb being contained in ball-and-socket chassis, support bulb seal ring is installed, supporting bulb is fixed by screw thread by ball-and-socket chassis and ball-and-socket platen, the present invention can not be worked but can lock reliably and with long-term as various military hardwares, civil engineering vehicle or other pumping source in the time working, in the equipment landing leg hydraulic cylinder without any soft leg phenomenon;
Ball-and-socket chassis can make the present invention greatly strengthen the adaptability in out-of-flatness place along supporting bulb rotation, easy to use.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is structural representation of the present invention.
Fig. 2 is schematic appearance of the present invention.
Fig. 3 is the left view of Fig. 1.
In figure, 1 is ball-and-socket platen, and 2 is ball-and-socket chassis, 3 for supporting bulb, and 4 is outer cylinder, and 5 is inner cylinder tube, 6 is piston rod, and 7 is oil pipe, and 8 is lock piston, 9 is Steel Cable Baffle Ring, and 10 is steel ball, and 11 is spring, 12 is spring seat, and 13 is back-up ring, and 14 is cylinder cap, 15 is locknut, and 16 is joint, and 17 is sealing guide collar.
Embodiment
Embodiment one
As shown in Figure 1-Figure 3, there is a grade steel ball locking oil hydraulic cylinder, comprise outer cylinder 4, inner cylinder tube 5, piston rod 6, oil pipe 7, lock piston 8, steel ball 10, spring 11, spring seat 12 and cylinder cap 14, described outer cylinder 4 is threaded with described cylinder cap 14, be provided with multiple tracks radial groove at outer cylinder 4 inwalls, described inner cylinder tube 5 be arranged on outer cylinder 4 inner chambers and with outer cylinder 4 inwall Spielpassung, the radial circumference hole that is provided with a circle and can places steel ball 10 at inner cylinder tube 5 outer walls, described piston rod 6, lock piston 8 is all arranged on the inner chamber of inner cylinder tube 5, one end of piston rod 6 and inner cylinder tube 4 inwall Spielpassung, the other end is fixed by locknut 15 through cylinder cap 14 is rear, the inwall of described lock piston 8 and piston rod 6 Spielpassung and inwall can be connected with piston rod 6 inner chambers, the outer wall of lock piston 8 is provided with groove and boss and boss and inner cylinder tube 4 inwall Spielpassung, lock piston 8 is provided with the Steel Cable Baffle Ring 9 to lock piston 8 axial limitings away from one end of cylinder cap 14, one end of the other end elasticity linking springs 12, the other end of described spring 12 is arranged on the inner chamber of spring seat 13, described spring seat 13 is axially arranged between inner cylinder tube 5 inner chambers and piston rod 6 external diameters along piston rod 6, described oil pipe 7 one end are communicated with inner cylinder tube 4 inner chambers through piston rod 6 inner chambers, the other end is through cylinder cap 14, piston rod 6 reaches outside piston rod 6 inner chambers,
The internal diameter of described lock piston 8 and external diameter are provided with sealing guide collar 17, and described piston rod 6 is also provided with sealing guide collar 17 with one end external diameter of inner cylinder tube 4 Spielpassung.Be provided with dust ring and guide collar at described outer cylinder 4 near one end of cylinder cap 14.
The one end reaching outside piston rod 6 inner chambers through cylinder cap 14, piston rod 6 at described oil pipe 7 is provided with joint 16.
Between described spring seat 13 and inner cylinder tube 5, be axially provided with back-up ring 13 along inner cylinder tube 5.
The multiple tracks radial groove of described outer cylinder 4 inwalls is equi-spaced apart setting.
The spacing of the multiple tracks radial groove of outer cylinder 4 inwalls of the present invention and large I need design modifying according to real work.
Described lock piston 8 internal diameters and external diameter are all installed sealing guide collar, can block external impurities and enter in oil pocket b chamber, rise lock piston 8 leading roles simultaneously.
The dust ring of installing on described outer cylinder 4 can be isolated the foreign material such as dust, water, vapour and be entered, and guarantees the clean of outer cylinder 4 grooves.
Described spring 11 is arranged in spring seat 12, can prevent that spring 11 from contacting with piston rod 6 with inner cylinder tube 5, can also move axially by restraining spring 11.
Described outer cylinder 4, inner cylinder tube 5, cylinder cap 14, oil pipe 7, Steel Cable Baffle Ring 9, steel ball 10, spring 11, back-up ring 13, locknut 15, joint 16, sealing guide collar 17 is prior art.
Embodiment two
As shown in Figure 1-Figure 3, there is a grade steel ball locking oil hydraulic cylinder, comprise outer cylinder 4, inner cylinder tube 5, piston rod 6, oil pipe 7, lock piston 8, steel ball 10, spring 11, spring seat 12 and cylinder cap 14, described outer cylinder 4 is threaded with described cylinder cap 14, be provided with multiple tracks radial groove at outer cylinder 4 inwalls, described inner cylinder tube 5 be arranged on outer cylinder 4 inner chambers and with outer cylinder 4 inwall Spielpassung, the radial circumference hole that is provided with a circle and can places steel ball 10 at inner cylinder tube 5 outer walls, described piston rod 6, lock piston 8 is all arranged on the inner chamber of inner cylinder tube 5, one end of piston rod 6 and inner cylinder tube 4 inwall Spielpassung, the other end is fixed by locknut 15 through cylinder cap 14 is rear, the inwall of described lock piston 8 and piston rod 6 Spielpassung and inwall can be connected with piston rod 6 inner chambers, the outer wall of lock piston 8 is provided with groove and boss and boss and inner cylinder tube 4 inwall Spielpassung, lock piston 8 is provided with the Steel Cable Baffle Ring 9 to lock piston 8 axial limitings away from one end of cylinder cap 14, one end of the other end elasticity linking springs 12, the other end of described spring 12 is arranged on the inner chamber of spring seat 13, described spring seat 13 is axially arranged between inner cylinder tube 5 inner chambers and piston rod 6 external diameters along piston rod 6, described oil pipe 7 one end are communicated with inner cylinder tube 4 inner chambers through piston rod 6 inner chambers, the other end is through cylinder cap 14, piston rod 6 reaches outside piston rod 6 inner chambers,
The internal diameter of described lock piston 8 and external diameter are provided with sealing guide collar 17, and described piston rod 6 is also provided with sealing guide collar 17 with one end external diameter of inner cylinder tube 4 Spielpassung.Be provided with dust ring and guide collar at described outer cylinder 4 near one end of cylinder cap 14.
One end that described inner cylinder tube 5 does not arrange spring 11, spring seat 12 is connected with support bulb 3, and described support bulb 3 is contained in ball-and-socket chassis 2, and it is fixing that described ball-and-socket chassis 2 and ball-and-socket platen 1 will support bulb 3 by screw thread, and described support bulb 3 is provided with seal ring.
Described ball-and-socket chassis 2 can be rotated along supporting bulb 3.
The one end reaching outside piston rod 6 inner chambers through cylinder cap 14, piston rod 6 at described oil pipe 7 is provided with joint 16.
Between described spring seat 13 and inner cylinder tube 5, be axially provided with back-up ring 13 along inner cylinder tube 5.
The multiple tracks radial groove of described outer cylinder 4 inwalls is equi-spaced apart setting.
The spacing of the multiple tracks radial groove of outer cylinder 4 inwalls of the present invention and large I need design modifying according to real work.
Described lock piston 8 internal diameters and external diameter are all installed sealing guide collar, can block external impurities and enter in oil pocket b chamber, rise lock piston 8 leading roles simultaneously.
The dust ring of installing on described outer cylinder 4 can be isolated the foreign material such as dust, water, vapour and be entered, and guarantees the clean of outer cylinder 4 grooves.
Described spring 11 is arranged in spring seat 12, can prevent that spring 11 from contacting with piston rod 6 with inner cylinder tube 5, can also move axially by restraining spring 11.
Described outer cylinder 4, inner cylinder tube 5, cylinder cap 14, oil pipe 7, Steel Cable Baffle Ring 9, steel ball 10, spring 11, back-up ring 13, locknut 15, joint 16, sealing guide collar 17 is prior art.
Claims (6)
1. there is a grade steel ball locking oil hydraulic cylinder, it is characterized in that: comprise outer cylinder 4, inner cylinder tube 5, piston rod 6, oil pipe 7, lock piston 8, steel ball 10, spring 11, spring seat 12 and cylinder cap 14, described outer cylinder 4 is threaded with described cylinder cap 14, be provided with multiple tracks radial groove at outer cylinder 4 inwalls, described inner cylinder tube 5 be arranged on outer cylinder 4 inner chambers and with outer cylinder 4 inwall Spielpassung, the radial circumference hole that is provided with a circle and can places steel ball 10 at inner cylinder tube 5 outer walls, described piston rod 6, lock piston 8 is all arranged on the inner chamber of inner cylinder tube 5, one end of piston rod 6 and inner cylinder tube 4 inwall Spielpassung, the other end is fixed by locknut 15 through cylinder cap 14 is rear, the inwall of described lock piston 8 and piston rod 6 Spielpassung and inwall can be connected with piston rod 6 inner chambers, the outer wall of lock piston 8 is provided with groove and boss and boss and inner cylinder tube 4 inwall Spielpassung, lock piston 8 is provided with the Steel Cable Baffle Ring 9 to lock piston 8 axial limitings away from one end of cylinder cap 14, one end of the other end elasticity linking springs 12, the other end of described spring 12 is arranged on the inner chamber of spring seat 13, described spring seat 13 is axially arranged between inner cylinder tube 5 inner chambers and piston rod 6 external diameters along piston rod 6, described oil pipe 7 one end are communicated with inner cylinder tube 4 inner chambers through piston rod 6 inner chambers, the other end is through cylinder cap 14, piston rod 6 reaches outside piston rod 6 inner chambers,
The internal diameter of described lock piston 8 and external diameter are provided with sealing guide collar 17, and described piston rod 6 is also provided with sealing guide collar 17 with one end external diameter of inner cylinder tube 4 Spielpassung, is provided with dust ring and guide collar at described outer cylinder 4 near one end of cylinder cap 14.
2. according to claim 1 have a grade steel ball locking oil hydraulic cylinder, it is characterized in that: one end that described inner cylinder tube 5 does not arrange spring 11, spring seat 12 is connected with support bulb 3, described support bulb 3 is contained in ball-and-socket chassis 2, it is fixing that described ball-and-socket chassis 2 and ball-and-socket platen 1 will support bulb 3 by screw thread, and described support bulb 3 is provided with seal ring.
3. according to claim 2 have a grade steel ball locking oil hydraulic cylinder, it is characterized in that: described ball-and-socket chassis 2 can be rotated along supporting bulb 3.
4. according to claim 1 and 2 have a grade steel ball locking oil hydraulic cylinder, it is characterized in that: the one end reaching outside piston rod 6 inner chambers through cylinder cap 14, piston rod 6 at described oil pipe 7 is provided with joint 16.
5. there is a grade steel ball locking oil hydraulic cylinder according to according to claim 1 and 2, it is characterized in that: between described spring seat 13 and inner cylinder tube 5, be axially provided with back-up ring 13 along inner cylinder tube 5.
6. there is a grade steel ball locking oil hydraulic cylinder according to according to claim 1 and 2, it is characterized in that: the multiple tracks radial groove of described outer cylinder 4 inwalls is equi-spaced apart setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124212.0A CN103899592B (en) | 2014-03-31 | 2014-03-31 | There is a grade steel ball locking oil hydraulic cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124212.0A CN103899592B (en) | 2014-03-31 | 2014-03-31 | There is a grade steel ball locking oil hydraulic cylinder |
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| CN103899592A true CN103899592A (en) | 2014-07-02 |
| CN103899592B CN103899592B (en) | 2015-11-25 |
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| CN201410124212.0A Active CN103899592B (en) | 2014-03-31 | 2014-03-31 | There is a grade steel ball locking oil hydraulic cylinder |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986730A (en) * | 2015-02-13 | 2016-10-05 | 宁波欧适节能科技有限公司 | Air compressing execution device with automatic locking and buckling function |
| RU2622684C1 (en) * | 2016-04-28 | 2017-06-19 | АКЦИОНЕРНОЕ ОБЩЕСТВО "Центральный научно-исследовательский институт автоматики и гидравлики" (АО "ЦНИИАГ") | Power hydrocylinder with mechanical fixation of the stock |
| CN107313996A (en) * | 2017-08-23 | 2017-11-03 | 山东弘宇农机股份有限公司 | A kind of oil cylinder of adjustable decrease speed |
| CN108275583A (en) * | 2018-03-15 | 2018-07-13 | 广厦建设集团有限责任公司 | A kind of plug-in swing arm tower crane supporting rack of Super High and its installation method |
| CN110374957A (en) * | 2019-08-19 | 2019-10-25 | 山西航天清华装备有限责任公司 | Steel ball locking type hydraulic stop |
| CN112096686A (en) * | 2020-08-22 | 2020-12-18 | 段井胜 | Hydraulic cylinder |
| CN117125197A (en) * | 2023-09-05 | 2023-11-28 | 扬州市江都永坚有限公司 | Cable throwing device |
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| GB2128680A (en) * | 1982-10-08 | 1984-05-02 | Johnston Brothers | Hydraulic cylinder and piston |
| JP2003278713A (en) * | 2002-01-18 | 2003-10-02 | Shin Meiwa Ind Co Ltd | Driver |
| DE10204917B4 (en) * | 2002-02-07 | 2004-04-08 | Maschinenfabrik Bermatingen Gmbh & Co | actuator |
| CN201412409Y (en) * | 2009-06-17 | 2010-02-24 | 江苏恒立高压油缸有限公司 | Mechanical self-locking hydro cylinder |
| CN103089746A (en) * | 2013-01-23 | 2013-05-08 | 南宁燎旺车灯有限责任公司 | Intelligent mechanical self-locking hydraulic device |
| CN203847468U (en) * | 2014-03-31 | 2014-09-24 | 长治清华机械厂 | Stepped steel ball locking hydraulic cylinder |
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2014
- 2014-03-31 CN CN201410124212.0A patent/CN103899592B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2128680A (en) * | 1982-10-08 | 1984-05-02 | Johnston Brothers | Hydraulic cylinder and piston |
| JP2003278713A (en) * | 2002-01-18 | 2003-10-02 | Shin Meiwa Ind Co Ltd | Driver |
| DE10204917B4 (en) * | 2002-02-07 | 2004-04-08 | Maschinenfabrik Bermatingen Gmbh & Co | actuator |
| CN201412409Y (en) * | 2009-06-17 | 2010-02-24 | 江苏恒立高压油缸有限公司 | Mechanical self-locking hydro cylinder |
| CN103089746A (en) * | 2013-01-23 | 2013-05-08 | 南宁燎旺车灯有限责任公司 | Intelligent mechanical self-locking hydraulic device |
| CN203847468U (en) * | 2014-03-31 | 2014-09-24 | 长治清华机械厂 | Stepped steel ball locking hydraulic cylinder |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986730A (en) * | 2015-02-13 | 2016-10-05 | 宁波欧适节能科技有限公司 | Air compressing execution device with automatic locking and buckling function |
| RU2622684C1 (en) * | 2016-04-28 | 2017-06-19 | АКЦИОНЕРНОЕ ОБЩЕСТВО "Центральный научно-исследовательский институт автоматики и гидравлики" (АО "ЦНИИАГ") | Power hydrocylinder with mechanical fixation of the stock |
| CN107313996A (en) * | 2017-08-23 | 2017-11-03 | 山东弘宇农机股份有限公司 | A kind of oil cylinder of adjustable decrease speed |
| CN107313996B (en) * | 2017-08-23 | 2023-08-11 | 山东弘宇农机股份有限公司 | Oil cylinder capable of adjusting descending speed |
| CN108275583A (en) * | 2018-03-15 | 2018-07-13 | 广厦建设集团有限责任公司 | A kind of plug-in swing arm tower crane supporting rack of Super High and its installation method |
| CN110374957A (en) * | 2019-08-19 | 2019-10-25 | 山西航天清华装备有限责任公司 | Steel ball locking type hydraulic stop |
| CN112096686A (en) * | 2020-08-22 | 2020-12-18 | 段井胜 | Hydraulic cylinder |
| CN112096686B (en) * | 2020-08-22 | 2022-03-22 | 无锡恒立液压气动有限公司 | Hydraulic cylinder |
| CN117125197A (en) * | 2023-09-05 | 2023-11-28 | 扬州市江都永坚有限公司 | Cable throwing device |
| CN117125197B (en) * | 2023-09-05 | 2024-02-20 | 扬州市江都永坚有限公司 | Cable throwing device |
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| Publication number | Publication date |
|---|---|
| CN103899592B (en) | 2015-11-25 |
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Address after: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi Co-patentee after: China Academy of Launch Vehicle Technology Patentee after: Shanxi spaceflight Qinghua Equipment Co., Ltd. Address before: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi Co-patentee before: China Academy of Launch Vehicle Technology Patentee before: Qinghua Machinery Plant, Changzhi |