CN104806599A - Boosting type mechanical locking type hydraulic cylinder - Google Patents
Boosting type mechanical locking type hydraulic cylinder Download PDFInfo
- Publication number
- CN104806599A CN104806599A CN201510172253.1A CN201510172253A CN104806599A CN 104806599 A CN104806599 A CN 104806599A CN 201510172253 A CN201510172253 A CN 201510172253A CN 104806599 A CN104806599 A CN 104806599A
- Authority
- CN
- China
- Prior art keywords
- annular
- oil inlet
- bar
- inlet hole
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B2015/267—Manual locking or release
Abstract
The invention discloses a boosting type mechanical locking type hydraulic cylinder. The boosting type mechanical locking type hydraulic cylinder comprises an oil hole plate, an outer cylinder barrel, an inner cylinder barrel and a piston, a piston rod assembly is arranged in an annular cavity between the inner cylinder barrel and outer cylinder barrel, and the piston rod assembly is composed of a connecting nut, an annular outer rod, an inner guide sleeve, an annular inner rod, an outer guide sleeve and a spherical crown; a first oil inlet and a second oil inlet are formed in the oil hole plate, a first oil inlet hole and a second oil inlet hole are formed in the left head face of the outer cylinder barrel, a third oil inlet hole is formed in the connecting nut, a fourth oil inlet hole is formed in the right end of the inner cylinder barrel, and a fifth oil inlet hole is formed in the right end of the annular inner rod; the first oil inlet is communicated with the first oil inlet hole, and the first oil inlet hole is communicated with the inner cavity of the inner cylinder barrel; the second oil inlet is communicated with the second oil inlet hole, and the second oil inlet hole is communicated with the inner cavity of the outer cylinder barrel; the third oil inlet hole is communicated with the annular cavity of the piston rod assembly. The boosting type mechanical locking type hydraulic cylinder is larger in thrust, the piston rod assembly keeps stable on any travel position through mechanical locking, and the temperature change influence is avoided.
Description
Technical field
The invention belongs to oil hydraulic cylinder technical field, be specifically related to a kind of force booster type mechanical locking hydraulic cylinder.
Background technique
Oil hydraulic cylinder is a kind of straight reciprocating motion and bears the executive component of large load.In actual hydraulic pressure device, regardless of hydraulic lock or oil hydraulic cylinder, internal leakage always inevitably exists, hydraulic cylinder piston is made to produce stroke change in stop place, this phenomenon is commonly referred to " soft leg ", and internal leakage and temperature change cause the change of hydraulic oil volume to make piston cannot keep stable in any travel position.When oil special vehicle field operation, require oil hydraulic cylinder for a long time and stably support vehicle chassis and nothing " soft leg " phenomenon.Simultaneously due to installing space restriction, oil hydraulic cylinder size is strictly controlled.
Summary of the invention
The invention solves the deficiencies in the prior art, provide a kind of force booster type mechanical locking hydraulic cylinder, under the condition that boundary dimension is identical with Normal hydraulic cylinder, thrust is larger; Achieve piston-rod assembly by mechanical interlocking in any travel position, keep stable, thoroughly solve " soft leg " phenomenon, and not by the impact of temperature change.
The technical solution adopted in the present invention is: comprise hydraulic fluid port plate, outer cylinder, inner cylinder tube and piston, hydraulic fluid port plate is fixed on the left side of outer cylinder, inner cylinder tube is arranged in outer cylinder and its left end is fixedly connected with the left end of outer cylinder, piston is fixed on the right-hand member of inner cylinder tube, in ring cavity between described inner cylinder tube and outer cylinder, piston-rod assembly is housed, described piston-rod assembly is made up of bar, outer guide sleeve and spherical crown in attaching nut, the outer bar of annular, interior guide sleeve, annular; The outer bar of described annular is inserted in outer cylinder by the outer guide sleeve that its left end is set with, and the outer bar right-hand member of annular is set with sleeve, and bush whorl is connected to the right-hand member of outer cylinder; In described annular, bar is arranged in the outer bar of annular, and bar in annular is sleeved on piston, and in annular, bar left end is fixedly connected with interior guide sleeve, and described interior guide sleeve is sleeved on inner cylinder tube; The left end of the outer bar of described annular is fixedly connected with interior guide sleeve by attaching nut, so make attaching nut, annular outer bar, interior guide sleeve and outer guide sleeve form a ring-shaped combination piston; Described spherical crown is fixed on the right-hand member of bar and the outer bar of annular in annular, and the right-hand member outer wall of the outer bar of annular has outside thread, and locking nut is sleeved on the outside thread of the outer bar right-hand member of annular;
Described hydraulic fluid port plate have the first filler opening and the second filler opening, the left side of described outer cylinder is shaped with the first oil inlet hole and the second oil inlet hole, attaching nut is shaped with the 3rd oil inlet hole, the right-hand member of inner cylinder tube is shaped with the 4th oil inlet hole, and in annular, the right-hand member of bar is shaped with the 5th oil inlet hole; Described first filler opening communicates with the first oil inlet hole, and the first oil inlet hole communicates with the inner chamber of inner cylinder tube; Described second filler opening communicates with the second oil inlet hole, and the second oil inlet hole communicates with the inner chamber of outer cylinder; Described 3rd oil inlet hole communicates with bar in annular and the ring cavity between the outer bar of annular; Ring cavity between the inner chamber of inner cylinder tube with bar in inner cylinder tube and annular is communicated with by described 4th oil inlet hole; Described 5th oil inlet hole is by the ring cavity outside bar in annular and annular between bar and the cavity connects between piston, the interior bar of annular and spherical crown.
Further, described sleeve by its built with lining be sleeved on annular outer bar on.
Further, the outer side wall of described locking nut is provided with handle.
The advantage that the present invention compared with prior art has and effect:
1, compact structure, under the condition that boundary dimension is identical with Normal hydraulic cylinder, thrust is larger.Otherwise under identical thrust condition, boundary dimension can be less, meets the installation requirement in little space.
2, achieve piston-rod assembly by mechanical interlocking in any travel position, keep stable, thoroughly solve " soft leg " phenomenon, and not by the impact of temperature change.
3, when the oil liquid pressure in oil hydraulic cylinder rod chamber and rodless cavity and oil supply line can being discharged after mechanical interlocking, make oil hydraulic cylinder and oil supply line be in normal pressure, the impact eliminating temperature extends its working life simultaneously.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention;
Fig. 2 is that inventive piston bar assembly stretches out and the structural representation of mechanical interlocking.
specific embodiment party.
Below in conjunction with accompanying drawing 1,2 and embodiment, the present invention is described in detail.
A kind of force booster type mechanical locking hydraulic cylinder, comprise hydraulic fluid port plate 1, outer cylinder 2, inner cylinder tube 7 and piston 16, hydraulic fluid port plate 1 is fixed on the left side of outer cylinder 2, and inner cylinder tube 7 is arranged in outer cylinder 2 and its left end is fixedly connected with the left end of outer cylinder 2, and piston 16 is fixed on the right-hand member of inner cylinder tube 7.In ring cavity between described inner cylinder tube 7 and outer cylinder 2, piston-rod assembly is housed, described piston-rod assembly is made up of bar 6, outer guide sleeve 8 and spherical crown 12 in attaching nut 3, the outer bar 4 of annular, interior guide sleeve 5, annular; The outer bar 4 of described annular is inserted in outer cylinder 2 by the outer guide sleeve 8 that its left end is set with, and outer bar 4 right-hand member of annular is set with sleeve 9, and sleeve 9 is threaded in the right-hand member of outer cylinder 2; In described annular, bar 6 is arranged in the outer bar 4 of annular, and bar 6 in annular is sleeved on piston 16, and in annular, bar 6 left end is fixedly connected with interior guide sleeve 5, and described interior guide sleeve 5 is sleeved on inner cylinder tube 7; The left end of the outer bar 4 of described annular is fixedly connected with interior guide sleeve 5 by attaching nut 3, so make attaching nut 3, annular outer bar 4, interior guide sleeve 5 and outer guide sleeve 8 form a ring-shaped combination piston; Described spherical crown 12 is fixed on the right-hand member of bar 6 and the outer bar 4 of annular in annular, and the right-hand member outer wall of the outer bar 4 of annular has outside thread, and locking nut 11 is sleeved on the outside thread of outer bar 4 right-hand member of annular;
Described hydraulic fluid port plate 1 have the first filler opening 18 and the second filler opening 19, the left side of described outer cylinder 2 is shaped with the first oil inlet hole 17 and the second oil inlet hole 15, attaching nut 3 is shaped with the 3rd oil inlet hole 14, the right-hand member of inner cylinder tube 7 is shaped with the 4th oil inlet hole 13, and in annular, the right-hand member of bar 6 is shaped with the 5th oil inlet hole 20; Described first filler opening 18 communicates with the first oil inlet hole 17, and the first oil inlet hole 17 communicates with the inner chamber of inner cylinder tube 7; Described second filler opening 19 communicates with the second oil inlet hole 15, and the second oil inlet hole 15 communicates with the inner chamber of outer cylinder 2; Described 3rd oil inlet hole 14 communicates with the ring cavity between bar in annular 6 and the outer bar 4 of annular; Ring cavity between the inner chamber of inner cylinder tube 7 with bar 6 in inner cylinder tube 7 and annular is communicated with by described 4th oil inlet hole 13; Described 5th oil inlet hole 20 is by the ring cavity outside bar 6 in annular and annular between bar 4 and the cavity connects between piston 16, the interior bar 6 of annular and spherical crown 12.
Described sleeve 9 by its built with lining 10 be sleeved on annular outer bar 4 on.Lining 10 adopts material for sliding bearing manufacture, can the outside thread of the outer bar 4 of available protecting annular injury-free.The outer side wall of described locking nut 10 is provided with handle 21.
Its working principle is: when the second filler opening 19 is for pressure oil, fluid is while the second oil inlet hole 15 enters the inner chamber of outer cylinder 2, enter the ring cavity between the outer bar 4 of bar 6 and annular in annular from the 3rd oil inlet hole 14, then enter the cavity in piston 16, annular between bar 6 and spherical crown 12 through the 5th oil inlet hole 20; Pressure oil acts on respectively by attaching nut 3, the ring-shaped combination piston that forms of annular outer bar 4, interior guide sleeve 5 and outer guide sleeve 8, and in its right end face of piston 16, common promotion piston-rod assembly stretches out to the right.Because the left side area of ring-shaped combination piston and piston 16 right side area sum are greater than the sectional area of outer cylinder 2 internal diameter, therefore under the condition that boundary dimension, internal diameter of cylinder, working pressure are identical, thrust of the present invention is larger; In addition, the outer bar 4 of annular has outside thread, make the right-hand member of itself and outer cylinder 2 by handle 21 rotational lock nut 11 after piston-rod assembly stretches out and tightly, piston-rod assembly and outer cylinder 2 machinery reliably can be locked, and locking back piston bar assembly remains unchanged in any travel position; When the oil liquid pressure in oil hydraulic cylinder rod chamber and rodless cavity and oil supply line can being discharged after mechanical interlocking, make oil hydraulic cylinder and oil supply line be in normal pressure, the impact eliminating temperature extends its working life simultaneously.When the first filler opening 18 is for pressure oil, fluid enters the inner chamber of inner cylinder tube 7 through the first oil inlet hole 17, then enters the ring cavity in inner cylinder tube 7 and annular between bar 6 through the 4th oil inlet hole 13, and in promoting, guide sleeve 5 drives piston-rod assembly to retract.
The present invention effectively can reduce the original length of oil cylinder under the prerequisite ensureing oil cylinder stroke, meets the requirement of oil cylinder installing space on oil special vehicle chassis, and has larger thrust.And thoroughly solve " soft leg " phenomenon by mechanical interlocking, when oil liquid pressure being discharged after mechanical interlocking, make oil hydraulic cylinder and oil supply line be in atmospheric pressure state, the impact eliminating temperature extends its working life simultaneously.
Claims (3)
1. a force booster type mechanical locking hydraulic cylinder, comprise hydraulic fluid port plate (1), outer cylinder (2), inner cylinder tube (7) and piston (16), hydraulic fluid port plate (1) is fixed on the left side of outer cylinder (2), inner cylinder tube (7) is arranged in outer cylinder (2) and its left end is fixedly connected with the left end of outer cylinder (2), piston (16) is fixed on the right-hand member of inner cylinder tube (7), it is characterized in that: in the ring cavity between described inner cylinder tube (7) and outer cylinder (2), piston-rod assembly is housed, described piston-rod assembly is by attaching nut (3), the outer bar of annular (4), interior guide sleeve (5), bar (6) in annular, outer guide sleeve (8) and spherical crown (12) composition, the outer guide sleeve (8) that the outer bar (4) of described annular is set with by its left end is inserted in outer cylinder (2), and annular outer bar (4) right-hand member is set with sleeve (9), and sleeve (9) is threaded in the right-hand member of outer cylinder (2), in described annular, bar (6) is arranged in the outer bar of annular (4), and bar (6) in annular is sleeved on piston (16), and in annular, bar (6) left end is fixedly connected with interior guide sleeve (5), and described interior guide sleeve (5) is sleeved on inner cylinder tube (7), the left end of the outer bar (4) of described annular is fixedly connected with interior guide sleeve (5) by attaching nut (3), and then makes attaching nut (3), the outer bar of annular (4), interior guide sleeve (5) and outer guide sleeve (8) form a ring-shaped combination piston, described spherical crown (12) is fixed on the right-hand member of bar (6) and the outer bar (4) of annular in annular, and the right-hand member outer wall of the outer bar of annular (4) has outside thread, and locking nut (11) is sleeved on the outside thread of annular outer bar (4) right-hand member,
Described hydraulic fluid port plate (1) have the first filler opening (18) and the second filler opening (19), the left side of described outer cylinder (2) is shaped with the first oil inlet hole (17) and the second oil inlet hole (15), attaching nut (3) is shaped with the 3rd oil inlet hole (14), the right-hand member of inner cylinder tube (7) is shaped with the 4th oil inlet hole (13), and in annular, the right-hand member of bar (6) is shaped with the 5th oil inlet hole (20); Described first filler opening (18) communicates with the first oil inlet hole (17), and the first oil inlet hole (17) communicates with the inner chamber of inner cylinder tube (7); Described second filler opening (19) communicates with the second oil inlet hole (15), and the second oil inlet hole (15) communicates with the inner chamber of outer cylinder (2); Described 3rd oil inlet hole (14) communicates with the ring cavity between bar in annular (6) and the outer bar (4) of annular; Ring cavity between the inner chamber of inner cylinder tube (7) with bar (6) in inner cylinder tube (7) and annular is communicated with by described 4th oil inlet hole (13); Described 5th oil inlet hole (20) is by the ring cavity outside bar (6) in annular and annular between bar (4) and the cavity connects between piston (16), the interior bar (6) of annular and spherical crown (12).
2. a kind of force booster type mechanical locking hydraulic cylinder according to claim 1, is characterized in that: described sleeve (9) by its built with lining (10) be sleeved in annular outer bar (4).
3. a kind of force booster type mechanical locking hydraulic cylinder according to claim 1 and 2, its feature as: the outer side wall of described locking nut (10) is provided with handle (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510172253.1A CN104806599A (en) | 2015-04-13 | 2015-04-13 | Boosting type mechanical locking type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510172253.1A CN104806599A (en) | 2015-04-13 | 2015-04-13 | Boosting type mechanical locking type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806599A true CN104806599A (en) | 2015-07-29 |
Family
ID=53691716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510172253.1A Pending CN104806599A (en) | 2015-04-13 | 2015-04-13 | Boosting type mechanical locking type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806599A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257627A (en) * | 2015-11-25 | 2016-01-20 | 湖南特力液压有限公司 | Hydraulic cylinder and engineering machinery |
| CN108223488A (en) * | 2016-12-21 | 2018-06-29 | 精工电子有限公司 | Fluid pressure cylinder |
| CN109334960A (en) * | 2018-11-29 | 2019-02-15 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of rotation pressure supply device and the undercarriage with it |
-
2015
- 2015-04-13 CN CN201510172253.1A patent/CN104806599A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257627A (en) * | 2015-11-25 | 2016-01-20 | 湖南特力液压有限公司 | Hydraulic cylinder and engineering machinery |
| CN108223488A (en) * | 2016-12-21 | 2018-06-29 | 精工电子有限公司 | Fluid pressure cylinder |
| CN108223488B (en) * | 2016-12-21 | 2020-09-18 | 精工电子有限公司 | Fluid pressure cylinder |
| CN109334960A (en) * | 2018-11-29 | 2019-02-15 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of rotation pressure supply device and the undercarriage with it |
| CN109334960B (en) * | 2018-11-29 | 2021-10-01 | 中国航空工业集团公司沈阳飞机设计研究所 | Rotary pressure supply device and aircraft landing gear with same |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |
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| RJ01 | Rejection of invention patent application after publication |