CN204591858U - A kind of force booster type mechanical locking hydraulic cylinder - Google Patents
A kind of force booster type mechanical locking hydraulic cylinder Download PDFInfo
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- CN204591858U CN204591858U CN201520219445.9U CN201520219445U CN204591858U CN 204591858 U CN204591858 U CN 204591858U CN 201520219445 U CN201520219445 U CN 201520219445U CN 204591858 U CN204591858 U CN 204591858U
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Abstract
The utility model discloses a kind of force booster type mechanical locking hydraulic cylinder, comprise hydraulic fluid port plate, outer cylinder, inner cylinder tube and piston, in ring cavity between inner cylinder tube and outer cylinder, piston-rod assembly is housed, 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; Hydraulic fluid port plate have the first filler opening and the second filler opening, the left side of 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; 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; Second filler opening communicates with the second oil inlet hole, and the second oil inlet hole communicates with the inner chamber of outer cylinder; 3rd oil inlet hole communicates with the ring cavity of piston-rod assembly.The utility model thrust is larger, and makes piston-rod assembly in any travel position, keep stable by mechanical interlocking, and not by the impact of temperature change.
Description
Technical field
The utility model belongs to oil hydraulic cylinder technical field, is 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.
Model utility content
The utility model solves the deficiencies in the prior art, provides a kind of force booster type mechanical locking hydraulic cylinder, and 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 technological scheme that the utility model adopts 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 utility model 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 utility model;
Fig. 2 is that the utility model piston-rod assembly stretches out and the structural representation of mechanical interlocking.
specific embodiment party.
Below in conjunction with accompanying drawing 1,2 and embodiment, the utility model 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, the utility model thrust 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 utility model 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 |
|---|---|---|---|
| CN201520219445.9U CN204591858U (en) | 2015-04-13 | 2015-04-13 | A kind of force booster type mechanical locking hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520219445.9U CN204591858U (en) | 2015-04-13 | 2015-04-13 | A kind of force booster type mechanical locking hydraulic cylinder |
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| Publication Number | Publication Date |
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| CN204591858U true CN204591858U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520219445.9U Active CN204591858U (en) | 2015-04-13 | 2015-04-13 | A kind of force booster type mechanical locking hydraulic cylinder |
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| CN (1) | CN204591858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561713A (en) * | 2019-08-05 | 2019-12-13 | 张家港市绿环机械有限公司 | Push oil cylinder device |
-
2015
- 2015-04-13 CN CN201520219445.9U patent/CN204591858U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561713A (en) * | 2019-08-05 | 2019-12-13 | 张家港市绿环机械有限公司 | Push oil cylinder device |
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