CN204061405U - Double-action passing hole type level Four oil cylinder - Google Patents
Double-action passing hole type level Four oil cylinder Download PDFInfo
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- CN204061405U CN204061405U CN201420513779.2U CN201420513779U CN204061405U CN 204061405 U CN204061405 U CN 204061405U CN 201420513779 U CN201420513779 U CN 201420513779U CN 204061405 U CN204061405 U CN 204061405U
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Abstract
Double-action passing hole type level Four oil cylinder, comprise outer cylinder, cylinder bottom, core pipe assembly and the middle cylinder barrel of passing hole type, core pipe assembly is by oil pipe, end cap and piston composition, end cap is established and stretches out hydraulic fluid port and retraction hydraulic fluid port, stretch out hydraulic fluid port and oil pipe inner space, between outer cylinder and adjacent middle cylinder barrel, between adjacent middle cylinder barrel, chamber is had between oil pipe and adjacent middle cylinder barrel, middle cylinder barrel has oil-through hole, oil-through hole is by adjacent two chamber, the nearly cylinder bottom end of middle cylinder barrel has piston structure, piston structure and have gap between piston and cylinder bottom, described gap forms a chamber jointly, the inwall of middle cylinder barrel relevant position is installed and porosely uses spacing back-up ring, the spacing back-up ring of axle outer wall is equipped with, the hole both ends of the surface of spacing back-up ring inner ring and the axle both ends of the surface of spacing back-up ring outer ring have chamfering.Oil cylinder processing cost of the present utility model is low, compact structure, can by adjusting hole with and the position of the spacing back-up ring of axle, finely tune every grade of cylinder barrel and stretch out stroke and range.
Description
Technical field
The utility model relates to a kind of multi-stage oil cylinder, particularly a kind of double-action passing hole type level Four oil cylinder.
Background technique
Multi-stage oil cylinder is applicable to the occasion that stroke is large and installing space is little, thus in given installing space, realize the stroke longer than single-stage oil cylinder.One-way cylinder and two-way cylinder two kinds is divided by the mode of action of hydraulic oil in oil cylinder, depended on pressure oil jacking when one-way cylinder is overhanging, by the deadweight of mechanism or spring force during retraction, as self-tipping type truck, but for not only not conducting oneself with dignity but also there is no the application of external mechanical influence power, piston can not be retracted voluntarily, therefore must adopt two-way cylinder.
The multistage cylinder barrel of existing double-acting multilevel oil cylinder generally adopts staircase structural model, and cylinder barrel material mostly is hot-rolled pipe, and cylinder barrel is spacing integrated with cylinder barrel, the length of endoporus step part accounts for the ratio of cylinder barrel overall length less than 10%, cylinder barrel machining allowance is large, and stock utilization is low, and work efficiency is low.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of double-action passing hole type level Four oil cylinder, this oil cylinder all adopts passing hole type structure except outer cylinder, spacing for step and cylinder barrel itself are divided into two, adopt hole, hole spacing back-up ring and the spacing back-up ring of axle to carry out spacing, there is the advantages such as compact structure, the life-span is long, sealing system is reasonable.
For solving the problems of the technologies described above, the technological scheme that the utility model is taked is to provide a kind of double-action passing hole type level Four oil cylinder, comprise outer cylinder, cylinder bottom, core pipe assembly and the middle cylinder barrel between outer cylinder and core pipe assembly, described middle cylinder barrel is all passing hole type cylinder barrel, for cold rolled tube, middle cylinder barrel comprises one-level cylinder barrel, secondary cylinder barrel, three grades of cylinder barrels and level Four cylinder barrel, and outer cylinder two ends connect cylinder bottom and guide sleeve respectively;
Described core pipe assembly is made up of oil pipe, end cap and piston, and oil pipe one end is connected with end cap, the other end fixed piston, and end cap is provided with and stretches out hydraulic fluid port and retraction hydraulic fluid port, stretches out hydraulic fluid port and oil pipe inner space, and end cap is fixed in level Four inner wall of cylinder;
The first chamber is had between outer cylinder and one-level cylinder barrel, the second chamber is had between one-level cylinder barrel and secondary cylinder barrel, the 3rd chamber is had between secondary cylinder barrel and three grades of cylinder barrels, the 4th chamber is had between three grades of cylinder barrels and level Four cylinder barrel, the 5th chamber is had between level Four cylinder barrel and oil pipe, one-level cylinder barrel there is the first oil-through hole, secondary cylinder barrel there is the second oil-through hole, three grades of cylinder barrels there is the 3rd oil-through hole, level Four cylinder barrel there is the 4th oil-through hole, first chamber is communicated with the second chamber by the first oil-through hole, second chamber is communicated with the 3rd chamber by the second oil-through hole, 3rd chamber is communicated with the 4th chamber by the 3rd oil-through hole, 4th chamber is communicated with the 5th chamber by the 4th oil-through hole, 5th chamber communicates with retraction hydraulic fluid port,
One-level cylinder barrel, secondary cylinder barrel, three grades of cylinder barrels and the nearly cylinder bottom end of level Four cylinder barrel have piston structure, described piston structure and have gap between piston and cylinder bottom, and described gap forms the 6th chamber jointly;
The inwall of one-level cylinder barrel, secondary cylinder barrel and three grades of cylinder barrel relevant positions is provided with the spacing back-up ring in hole protruding its inner wall surface, the outer wall of secondary cylinder barrel, three grades of cylinder barrels and level Four cylinder barrel relevant position is all equipped with the spacing back-up ring of axle protruding its outer wall surface, described the hole both ends of the surface of spacing back-up ring inner ring and the axle both ends of the surface relevant position of spacing back-up ring outer ring offer the chamfering of 10 ° ~ 20 °.
Described hole is with between the inner peripheral surface of spacing back-up ring and corresponding middle cylinder drum outer wall, and axle all leaves gap with between spacing back-up ring outer circumferential face and corresponding middle inner wall of cylinder, and the spacing back-up ring in described hole also has pincers hole near opening end.
The middle cylinder barrel of double-action passing hole type level Four oil cylinder of the present utility model all adopts passing hole type structure, cylinder barrel material selects cold rolled tube, add the intensity of cylinder barrel, inner hole of cylinder direct roll extrusion Huo person Quilting grinds, greatly reduce blank machining allowance, improve the utilization ratio of material, reduce cost, improve work efficiency simultaneously.With the spacing back-up ring in hole and the spacing back-up ring of axle realize oil cylinder stretch out, bounce back time spacing, limit structure and cylinder barrel itself are divided into two, cylinder structure is compacter, limiting block loop material selects the alloy nodular cast iron of high strength, simultaneously during spacing retainer ring spacing, surface of contact is inclined-plane, its area of contact can be increased, reduce active force, when ensureing that oil cylinder is overhanging and bounce back, the stability of spacing back-up ring contact and reliability, and when spacing back-up ring damages, can only replace spacing back-up ring, not need to change cylinder barrel, save user cost.
Between described piston structure and outer cylinder and between piston structure and adjacent middle cylinder barrel, supporting ring and Glais ring are all housed, between guide sleeve and one-level cylinder barrel and between adjacent middle cylinder barrel, have dust ring and seal ring to seal.Piston structure sealing adopts Glais ring to add banded supporting ring structure, and Glais ring is high pressure resistant as two-way sealing ring, frictional force is low, effectively can avoid creeping phenomenon, and supporting ring compression strength is high, can bear larger side to power; Rod seal adopts seal ring to add dust ring structure, not only increases sealing stability and guiding length, also can make there are enough gaps between inner hole of cylinder and subordinate's cylinder barrel surface, eliminate the possibility of pulling between them.
In a word, in the middle of double-action passing hole type level Four oil cylinder of the present utility model, cylinder barrel adopts passing hole type cylinder barrel, and chipping allowance is little, cost is low, processing is simple; Use and axle two kinds of spacing retainer ring spacings with hole, cylinder structure is compacter, can also by adjusting hole with and the position of the spacing back-up ring of axle, finely tune every grade of cylinder barrel and stretch out stroke and range, oil cylinder of the present utility model not only can bear larger side to power, and runs smooth and easy good stability.
Accompanying drawing explanation
Fig. 1 is the sectional view of double-action passing hole type level Four oil cylinder in embodiment;
Fig. 2 is the schematic diagram of hole with spacing back-up ring;
Fig. 3 is the A-A cutaway view Amplified image of Fig. 2;
Fig. 4 is the schematic diagram of axle with spacing back-up ring;
Fig. 5 is the B-B sectional view of Fig. 4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, double-action passing hole type level Four oil cylinder, comprise outer cylinder 1, cylinder bottom 9, core pipe assembly and the middle cylinder barrel between outer cylinder 1 and core pipe assembly, described middle cylinder barrel is all passing hole type cylinder barrel, its material is drawn tube, middle cylinder barrel comprises one-level cylinder barrel 2 from outside to inside, secondary cylinder barrel 3, three grades of cylinder barrels 4 and level Four cylinder barrel 5, outer cylinder 1 right-hand member welding cylinder bottom 9, left end establishes guide sleeve 10, guide sleeve 10 is threaded with outer cylinder 1, and seal with O RunddichtringO, guide sleeve 10 with the fitting surface of one-level cylinder barrel 2 are provided with dust ring 18 by right (outward) successively to left (interior), composite bush 15 and Yx RunddichtringO 16 are for dust-proof, guiding and sealing, between one-level cylinder barrel 2 and secondary cylinder barrel 3, T-shaped seal ring 17 is had between secondary cylinder barrel 3 and three grades of cylinder barrels 4 and between three grades of cylinder barrels 4 and level Four cylinder barrel 5, Yx RunddichtringO 16 and dust ring 18 seal, described core pipe assembly is made up of oil pipe 6, end cap 7 and piston 8, and oil pipe 6 right-hand member welds with end cap 7, and left end is fixedly connected with piston 8, end cap 7 is provided with and stretches out hydraulic fluid port 7a and retraction hydraulic fluid port 7b, stretch out hydraulic fluid port 7a and oil pipe 6 inner space, end cap 7 is threaded with level Four cylinder barrel 5, and seals with seal ring,
The first chamber a is had between outer cylinder 1 and one-level cylinder barrel 2, the second chamber b is had between one-level cylinder barrel 2 and secondary cylinder barrel 3, the 3rd chamber c is had between secondary cylinder barrel 3 and three grades of cylinder barrels 4, the 4th chamber d is had between three grades of cylinder barrels 4 and level Four cylinder barrel 5, the 5th chamber e is had between level Four cylinder barrel 5 and oil pipe 6, there is the first oil-through hole 2a one-level cylinder barrel 2 right part, there is the second oil-through hole 3a secondary cylinder barrel 3 right part, there is the 3rd oil-through hole 4a three grades of cylinder barrel 4 right parts, there is the 4th oil-through hole 5a level Four cylinder barrel 5 right part, first chamber a is communicated with the second chamber b by the first oil-through hole 2a, second chamber b is communicated with the 3rd chamber c by the second oil-through hole 3a, 3rd chamber c is communicated with the 4th chamber d by the 3rd oil-through hole 4a, 4th chamber d is communicated with the 5th chamber e by the 4th oil-through hole 5a, 5th chamber e communicates with retraction hydraulic fluid port 7b, one-level cylinder barrel 2 right-hand member has first piston structure, secondary cylinder barrel 3 right-hand member has the second piston structure, three grades of cylinder barrel 4 right-hand members have the 3rd piston structure, level Four cylinder barrel 5 right-hand member has four-piston configuration, first piston structure, the second piston structure, the 3rd piston structure, four-piston configuration and between piston and cylinder bottom, have gap, described gap forms the 6th chamber f jointly,
Between first piston structure and outer cylinder 1, between the second piston structure and one-level cylinder barrel 2, between the 3rd piston structure and secondary cylinder barrel 3 and between four-piston configuration and three grades of cylinder barrels 4, supporting ring 13 and Glais ring 14 are all housed;
The inwall at one-level cylinder barrel 2, secondary cylinder barrel 3 and three grades of cylinder barrel about 4 two ends all has hole back-up ring mounting groove, the spacing back-up ring 11 in hole protruding its inner wall surface is installed in the back-up ring mounting groove of hole, at secondary cylinder barrel 3, the outer wall in three grades of cylinder barrels 4 and level Four cylinder barrel 5 stage casing all has shaft block ring mounting groove, the spacing back-up ring 12 of axle protruding its outer wall surface is installed in shaft block ring mounting groove, described hole is with between the inner peripheral surface of spacing back-up ring 11 and corresponding middle cylinder drum outer wall, axle all leaves gap with between spacing back-up ring 12 outer circumferential face and corresponding middle inner wall of cylinder, described the hole both ends of the surface of spacing back-up ring 11 inner ring and the axle both ends of the surface relevant position of spacing back-up ring 12 outer ring offer chamfering, chamfer angle is 10 ° ~ 20 °, as shown in Fig. 2 ~ Fig. 5, described hole also has the pincers hole 11a being convenient to back-up ring dismounting near opening end with spacing back-up ring 11.
When toward stretching out oiling in hydraulic fluid port 7a, fluid flows into the 6th chamber f through the inner chamber of oil pipe 6, and fill up the 6th chamber f, when continuing oiling, 6th chamber f produces certain oil pressure, promote whole middle cylinder barrel and (comprise one-level cylinder barrel 2, secondary cylinder barrel 3, three grades of cylinder barrels 4 and level Four cylinder barrel 5) and core pipe assembly together with synchronously stretch out to the right, now the first chamber a volume reduces, air (or fluid) in first chamber a is respectively through the first oil-through hole 2a, second chamber b, second oil-through hole 3a, 3rd chamber c, 3rd oil-through hole 4a, 4th chamber d, 4th oil-through hole 5a enters into the 5th chamber e, discharge finally by retraction hydraulic fluid port 7b, when the first piston structure moving to one-level cylinder barrel 2 is against on guide sleeve 10, one-level cylinder barrel 2 reaches and stretches out the limit, no longer stretch out, now continue to stretching out oiling in hydraulic fluid port 7a, along with the increase of oil pressure in the 6th chamber f, secondary cylinder barrel 3, three grades of cylinder barrels 4, level Four cylinder barrel 5 and core pipe assembly stretch out simultaneously, now the second chamber b volume reduces, air (or fluid) in second chamber b is respectively through the second oil-through hole 3a, 3rd chamber c, 3rd oil-through hole 4a, 4th chamber d, 4th oil-through hole 5a enters into the 5th chamber e, discharge finally by retraction hydraulic fluid port 7b, when the spacing back-up ring 12 of axle moving to secondary cylinder barrel 3 outer wall contacts with spacing back-up ring 11 with the hole of one-level cylinder barrel 2 inwall, secondary cylinder barrel 3 reaches and stretches out the limit, no longer stretch out, the rest may be inferred, until when the axle of level Four cylinder barrel 5 outer wall contacts with spacing back-up ring 11 with the hole of three grades of cylinder barrel 4 inwalls with spacing back-up ring 12, level Four cylinder barrel reaches and stretches out the limit, now all middle cylinder barrels all reach and stretch out the limit, and oil cylinder reaches maximum and stretches out stroke,
When in retraction hydraulic fluid port 7b during oiling, fluid flows into the 5th chamber e, again successively through the 4th oil-through hole 5a, 3rd oil-through hole 4a, second oil-through hole 3a and the first oil-through hole 2a enters in the first chamber a, and simultaneously by the second chamber b, 3rd chamber c, 4th chamber d and the 5th chamber e tetra-chambers fill up, after oil pressure rises further, whole middle cylinder barrel is forced (to comprise one-level cylinder barrel 2, secondary cylinder barrel 3, three grades of cylinder barrels 4 and level Four oil cylinder 5) and core pipe assembly together with move to nearly cylinder bottom direction, when the right-hand member moving to one-level cylinder barrel 2 is against on cylinder bottom 9, one-level cylinder barrel 2 completes retraction movement, now continue oiling in retraction hydraulic fluid port 7b, fluid enters in the second chamber b through the 4th oil-through hole 5a, the 3rd oil-through hole 4a and the second oil-through hole 3a successively, and the 3rd chamber c, the 4th chamber d and the 5th chamber e tri-chambers are filled up simultaneously, after oil pressure rises further, force secondary cylinder barrel 3, three grades of cylinder barrels 4, level Four oil cylinder 5 moves to nearly cylinder bottom direction together with core pipe assembly, when the hole that the second piston structure right-hand member moving to secondary cylinder barrel 3 is against one-level cylinder barrel 2 inwall with on spacing back-up ring 11 time, secondary cylinder barrel 3 completes retraction movement, the rest may be inferred, until the 5th piston structure right-hand member of level Four cylinder barrel 5 hole that is against three grades of cylinder barrel 4 inwalls with on spacing back-up ring 11 time, level Four cylinder barrel also completes retraction movement, finally completes the total travel retraction movement step by step of all middle cylinder barrels.
Claims (6)
1. double-action passing hole type level Four oil cylinder, comprise outer cylinder, cylinder bottom, core pipe assembly and the middle cylinder barrel between outer cylinder and core pipe assembly, middle cylinder barrel comprises one-level cylinder barrel, secondary cylinder barrel, three grades of cylinder barrels and level Four cylinder barrel, and outer cylinder two ends connect cylinder bottom and guide sleeve respectively;
Described core pipe assembly is made up of oil pipe, end cap and piston, and oil pipe one end is connected with end cap, the other end fixed piston, and end cap is provided with and stretches out hydraulic fluid port and retraction hydraulic fluid port, stretches out hydraulic fluid port and oil pipe inner space, and end cap is fixed in level Four inner wall of cylinder;
The first chamber is had between outer cylinder and one-level cylinder barrel, the second chamber is had between one-level cylinder barrel and secondary cylinder barrel, the 3rd chamber is had between secondary cylinder barrel and three grades of cylinder barrels, the 4th chamber is had between three grades of cylinder barrels and level Four cylinder barrel, the 5th chamber is had between level Four cylinder barrel and oil pipe, one-level cylinder barrel there is the first oil-through hole, secondary cylinder barrel there is the second oil-through hole, three grades of cylinder barrels there is the 3rd oil-through hole, level Four cylinder barrel there is the 4th oil-through hole, first chamber is communicated with the second chamber by the first oil-through hole, second chamber is communicated with the 3rd chamber by the second oil-through hole, 3rd chamber is communicated with the 4th chamber by the 3rd oil-through hole, 4th chamber is communicated with the 5th chamber by the 4th oil-through hole, 5th chamber communicates with retraction hydraulic fluid port,
One-level cylinder barrel, secondary cylinder barrel, three grades of cylinder barrels and the nearly cylinder bottom end of level Four cylinder barrel have piston structure, described piston structure and have gap between piston and cylinder bottom, and described gap forms the 6th chamber jointly;
It is characterized in that:
Described middle cylinder barrel is all passing hole type cylinder barrel;
The inwall of one-level cylinder barrel, secondary cylinder barrel and three grades of cylinder barrel relevant positions is provided with the spacing back-up ring in hole protruding its inner wall surface, the outer wall of secondary cylinder barrel, three grades of cylinder barrels and level Four cylinder barrel relevant position is all equipped with the spacing back-up ring of axle protruding its outer wall surface, described the hole both ends of the surface of spacing back-up ring inner ring and the axle both ends of the surface relevant position of spacing back-up ring outer ring offer chamfering.
2. double-action passing hole type level Four oil cylinder as claimed in claim 1, is characterized in that: between the inner peripheral surface of the spacing back-up ring in described hole and corresponding middle cylinder drum outer wall, axle all leaves gap with between spacing back-up ring outer circumferential face and corresponding middle inner wall of cylinder.
3. double-action passing hole type level Four oil cylinder as claimed in claim 1, is characterized in that: described chamfer angle is 10 ° ~ 20 °.
4. double-action passing hole type level Four oil cylinder as claimed in claim 1, is characterized in that: the spacing back-up ring in described hole also has pincers hole near opening.
5. the double-action passing hole type level Four oil cylinder according to any one of Claims 1-4, is characterized in that: between described piston structure and outer cylinder and between piston structure and adjacent middle cylinder barrel, supporting ring and Glais ring are all housed.
6. double-action passing hole type level Four oil cylinder as claimed in claim 5, is characterized in that: have dust ring and seal ring to seal between guide sleeve and one-level cylinder barrel and between adjacent middle cylinder barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513779.2U CN204061405U (en) | 2014-09-06 | 2014-09-06 | Double-action passing hole type level Four oil cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513779.2U CN204061405U (en) | 2014-09-06 | 2014-09-06 | Double-action passing hole type level Four oil cylinder |
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| CN204061405U true CN204061405U (en) | 2014-12-31 |
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| CN201420513779.2U Active CN204061405U (en) | 2014-09-06 | 2014-09-06 | Double-action passing hole type level Four oil cylinder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196819A (en) * | 2014-09-06 | 2014-12-10 | 蚌埠液力机械有限公司 | Double-purpose through hole type four-level oil cylinder |
| CN106762951A (en) * | 2016-12-28 | 2017-05-31 | 王金达 | A kind of compressed air backhaul single-action hydraulic cylinder |
-
2014
- 2014-09-06 CN CN201420513779.2U patent/CN204061405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196819A (en) * | 2014-09-06 | 2014-12-10 | 蚌埠液力机械有限公司 | Double-purpose through hole type four-level oil cylinder |
| CN106762951A (en) * | 2016-12-28 | 2017-05-31 | 王金达 | A kind of compressed air backhaul single-action hydraulic cylinder |
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