CN203962547U - Double-acting multilevel oil cylinder - Google Patents
Double-acting multilevel oil cylinder Download PDFInfo
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- CN203962547U CN203962547U CN201420408270.1U CN201420408270U CN203962547U CN 203962547 U CN203962547 U CN 203962547U CN 201420408270 U CN201420408270 U CN 201420408270U CN 203962547 U CN203962547 U CN 203962547U
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Abstract
The utility model discloses a kind of double-acting multilevel oil cylinder, comprise the multistage bar cylinder being nested in cylinder barrel, front end at bar cylinder every grade described is equipped with piston, every grade of described piston is provided with support ring and primary seal circle between its sidewall and this grade of described bar cylinder barrel, every grade of described piston is all connected with bar cylinder described in rear one-level with baffle plate by sunk screw, and this grade of described bar cylinder is provided with Steel Cable Baffle Ring between described baffle plate and described piston; Described support ring has two, is L shaped folder cloth phenolic aldehyde support ring, is located at the two ends of every grade of described piston; Described primary seal circle is OK type Combined seal ring of piston.The utility model can solve the flexible multi-stage oil cylinder unreasonable structure of existing double-action and cause the problem that oil cylinder load efficiency is low and working life is short.
Description
Technical field
The utility model relates to hydraulic machinery equipment technical field, especially a kind of flexible multi-stage oil cylinder of double-action of detachable piston.
Background technique
The existing double-action multi-stage oil cylinder that stretches, all has the multistage bar cylinder being nested in cylinder barrel, is equipped with piston at the front end of bar cylinder every grade described, and every grade of described piston is provided with support ring and primary seal circle between its sidewall and this grade of described bar cylinder barrel.Piston in flexible its cylinder barrel of multi-stage oil cylinder of this class double-action connects with adopting thread type or welding type being connected of bar cylinder more, and because bar cylinder barrel is thin, bar cylinder and piston adopt thread type join strength low, and processing difficulties, easily causes loosening; Owing to there being welding stress, bar cylinder adopts welding type to be connected distortion greatly with piston, easily damages, and also unloads maintenance difficult because of non-disconnectable causing, and causes the oil cylinder life-span low.In addition, because sealing between piston and cylinder barrel adopts the support ring sealing of straight-through open type, dirt-removing power is poor, and the easy loss of primary seal circle produces larger gap between causing between piston and cylinder barrel, and internal leakage is large, and oil cylinder load efficiency is low.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of double-acting multilevel oil cylinder, to solve the problem that oil cylinder load efficiency is low and working life is short of the flexible multi-stage oil cylinder of existing double-action.
In order to address the above problem, the technical solution of the utility model is: this double-acting multilevel oil cylinder comprises the multistage bar cylinder being nested in cylinder barrel, front end at bar cylinder every grade described is equipped with piston, every grade of described piston is provided with support ring and primary seal circle between its sidewall and this grade of described bar cylinder barrel, every grade of described piston is all connected with bar cylinder described in rear one-level with baffle plate by sunk screw, and this grade of described bar cylinder is provided with Steel Cable Baffle Ring between described baffle plate and described piston; Described support ring has two, is L shaped folder cloth phenolic aldehyde support ring, is located at the two ends of every grade of described piston; Described primary seal circle is OK type Combined seal ring of piston.
In technique scheme, more specifically scheme can be: described in every grade of described piston and rear one-level, between bar cylinder, be provided with O-ring seals.
Owing to having adopted technique scheme, the utility model compared with prior art has following beneficial effect:
1, this double-acting multilevel oil cylinder connects by sunk screw by being provided with baffle plate between every two-stage piston, between baffle plate and bar cylinder, be provided with Steel Cable Baffle Ring piston is fixed on bar cylinder, not only processing is simple, and easy to maintenance, structural reliability improves greatly, and also greatly extend the working life of oil cylinder;
2, this double-acting multilevel oil cylinder adopts two symmetrically arranged inverted L-type support rings to be symmetricly set in the both ends of the surface of described piston, the shaft shoulder place of every grade of piston and with being provided with O RunddichtringO between one-level bar cylinder end face, the piston primary seal circle with inner wall of cylinder and bar cylinder inner wall sealing that is arranged on piston axial plane is OK type Combined seal ring of piston, both kept good sealing effect, strengthen the guide support effect between piston and inner wall of cylinder and bar cylinder inwall, increase again dirt-removing power, pressurize ability is good, and oil cylinder load efficiency is improved greatly;
In sum, this double-acting multilevel oil cylinder piston is easy to manufacture, easy to maintenance, reliability is high, be particularly suitable for the long oil cylinder of stroke (having at present the oil cylinder of 10 meters of six grades of strokes in application), sealing effect is better, and oil cylinder self also has the dirty ability of oil resistant, extend the working life of oil cylinder etc., can meet the higher requirement of car load load; This double-acting multilevel oil cylinder load efficiency is high, especially can adaptation condition severe, car load compartment is longer, the operating mode that load is higher.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is A place enlarged view in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:
This double-acting multilevel oil cylinder as shown in Figure 1 and Figure 2, it comprises the multistage bar cylinder 3 being nested in cylinder barrel 2, cylinder barrel front end is provided with end casing 1.Front end in cylinder barrel 2 inherent every grade of bar cylinders 3 is equipped with piston 10, and every grade of piston 10 is provided with support ring 8 and primary seal circle 9 between its sidewall and this grade of described bar cylinder barrel.Primary seal circle 9 is OK type Combined seal ring of piston, makes the pressurize better effects if of whole oil cylinder, and especially primary seal oil-through hole is very capable, not fragile.Support ring 8 is inverted L-type folder cloth phenolic aldehyde support ring, and support ring 8 has two, is symmetricly set in two end faces of piston 10, and the L-type minor face of support ring 8 is downward, and long limit is fully contacted with cylinder barrel 2 barrels or bar cylinder 3 barrels, strengthens guide support effect.Every grade of piston 10 is all connected with same one-level bar cylinder 3 with baffle plate 7 by sunk screw 6; The shaft shoulder place of every grade of piston 7 and with being provided with shaft shoulder seal ring between one-level bar cylinder 3 end faces, this grade of bar cylinder 3 is provided with Steel Cable Baffle Ring 5 between baffle plate 7 and piston 10, Steel Cable Baffle Ring 5 is stuck in the groove that groove that cylinder barrel 3 endoporus at different levels open and baffle plate 7 open; Every grade of piston 10 and be symmetrically distributed in piston 10 two ends with being provided with 4, two L-type rubber rings of O-ring seals between one-level bar cylinder 3, OK type Combined seal ring of piston is in the centre of two support rings 8, and O shape seal ring 4 is complementary seal ring.When oil cylinder stretches out, after the baffle plate of previous stage 7 promotes, the piston 10 of one-level releases one after another, otherwise when oil cylinder is regained, the piston 10 of rear one-level promotes the baffle plate 7 of previous stage.
Claims (2)
1. a double-acting multilevel oil cylinder, comprise the multistage bar cylinder being nested in cylinder barrel, front end at bar cylinder every grade described is equipped with piston, every grade of described piston is provided with support ring and primary seal circle between its sidewall and this grade of described bar cylinder barrel, it is characterized in that: every grade of described piston is all connected with bar cylinder described in rear one-level with baffle plate by sunk screw, and this grade of described bar cylinder is provided with Steel Cable Baffle Ring between described baffle plate and described piston;
Described support ring has two, is L shaped folder cloth phenolic aldehyde support ring, is located at the two ends of every grade of described piston; Described primary seal circle is OK type Combined seal ring of piston.
2. double-acting multilevel oil cylinder according to claim 1, is characterized in that: described in every grade of described piston and rear one-level, between bar cylinder, be provided with O-ring seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420408270.1U CN203962547U (en) | 2014-07-23 | 2014-07-23 | Double-acting multilevel oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420408270.1U CN203962547U (en) | 2014-07-23 | 2014-07-23 | Double-acting multilevel oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962547U true CN203962547U (en) | 2014-11-26 |
Family
ID=51923139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420408270.1U Active CN203962547U (en) | 2014-07-23 | 2014-07-23 | Double-acting multilevel oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203962547U (en) |
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2014
- 2014-07-23 CN CN201420408270.1U patent/CN203962547U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |