CN205064439U - Single effect piston cylinder with inside backward flow function - Google Patents
Single effect piston cylinder with inside backward flow function Download PDFInfo
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- CN205064439U CN205064439U CN201520824918.8U CN201520824918U CN205064439U CN 205064439 U CN205064439 U CN 205064439U CN 201520824918 U CN201520824918 U CN 201520824918U CN 205064439 U CN205064439 U CN 205064439U
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- piston
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- piston rod
- oil
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a single effect piston cylinder with inside backward flow function. Including the cylinder, with cylinder matched with cylinder cap and cylinder bottom, the piston rod reaches and piston rod matched with piston, the cylinder on be equipped with with superior connectivity's bleeder screw, be equipped with on the cylinder bottom with the oil feed passageway of cavity of resorption intercommunication, the junction of piston rod and piston be equipped with the return flow line, voltol oil in the epicoele can flow back to the cavity of resorption through the return flow line is one -way. According to the above technical scheme, the utility model discloses a set up the return flow line in the junction of piston rod and piston, the voltol oil that gathers in messenger's epicoele need not to add the oil return mouth in passing through the one -way inflow cavity of resorption of return flow line, has eliminated the welding deformation who is produced by the oil return mouth, simultaneously do not need oil pipe external time, avoid producing oil leak hidden danger, reduced the assembly degree of difficulty.
Description
Technical field
The utility model relates to piston cylinder field, is specifically related to a kind of single-acting piston cylinder with internal reflux function.
Background technique
At present, single-acting piston cylinder causes cylinder piston rod cannot reach the phenomenon of maximal tensility to prevent because interior leakage causes epicoele to amass oil, all adopt the structure of epicoele band oil return nozzle, so that long-pending oil is got back to hydraulic oil container, thus ensure that cylinder piston rod can reach maximal tensility.But this structure exists following shortcoming: 1) need oil return nozzle to be welded on cylinder barrel, an arm can be caused to produce certain distortion, and the aesthetic property of outward appearance is poor; 2) need the indirect return tube at oil return nozzle and fuel tank, and need pipe clamp tight, install loaded down with trivial details and there is multiple leakage of oil point; 3) oil return nozzle structure is comparatively large, oil cylinder need when mounted to consider to leave herein dodge space.
Model utility content
The purpose of this utility model is to provide a kind of single-acting piston cylinder with internal reflux function, and the high pressure oil in epicoele can be back to cavity of resorption when not installing back oil nozzle by this piston cylinder.
For achieving the above object, the utility model have employed following technological scheme: the piston comprising cylinder barrel, the cylinder cap matched with cylinder barrel and cylinder bottom, piston rod and match with piston rod, described cylinder barrel is provided with the bleed screw be communicated with epicoele, cylinder bottom is provided with the oil inlet passage be communicated with cavity of resorption, described piston rod and the joint of piston are provided with return flow line, and the high pressure oil in epicoele unidirectionally through return flow line can be back to cavity of resorption.
The end that described piston rod matches with piston is inwardly provided with cylindrical recesses, described piston entirety is stepped, comprise the first diameter section of being formed with cylinder barrel and sealing and form with the cylindrical recesses of piston rod end the Second bobbin diameter section sealed, the center of described piston is axially arranged with through hole along it, the end that through hole is positioned at the first diameter section is provided with the one-way valve be connected with through hole, the sagittal plane that the first described diameter section is connected with Second bobbin diameter section offers the first groove, described Second bobbin diameter section offers the second groove be communicated with the first groove vertically on the surface of Second bobbin diameter section, gap is left between the end of described Second bobbin diameter section and the bottom land of cylindrical recesses, the first described groove, second groove, gap between Second bobbin diameter section and cylindrical recesses, through hole and one-way valve form return flow line.
Described Second bobbin diameter section is connected by Steel Cable Baffle Ring with the cylindrical recesses of piston rod end.
Described one-way valve passing hole back-up ring is fixedly installed in internal piston.
As shown from the above technical solution, the utility model is by arranging return flow line in the joint of piston rod and piston, making the high pressure oil gathered in epicoele by the unidirectional inflow cavity of resorption in return flow line, without the need to adding oil return nozzle, eliminating the welding deformation produced by oil return nozzle; Do not need external return tube simultaneously, avoid producing leakage of oil hidden danger, reduce assembling difficulty.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model;
Fig. 2 is fundamental diagram of the present utility model;
Fig. 3 is the structural representation of the utility model piston.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
A kind of single-acting piston cylinder with internal reflux function as shown in Figure 1, the piston 5 comprising cylinder barrel 1, the cylinder cap 2 matched with cylinder barrel 1 and cylinder bottom 3, piston rod 4 and match with piston rod 4, cylinder barrel 1 is provided with the bleed screw 7 be communicated with epicoele 6, and bleed screw 7 is the air for discharging in cylinder body; Cylinder bottom 3 is provided with the oil inlet passage 9 be communicated with cavity of resorption 8, and piston rod 4 is provided with return flow line with the joint of piston 5, and the high pressure oil in epicoele 6 unidirectionally through return flow line can be back to cavity of resorption 8.
Further, the end that piston rod 4 matches with piston 5 is inwardly provided with cylindrical recesses 41, as shown in Figure 3, piston 5 is overall stepped, comprise the first diameter section 51 of being formed with cylinder barrel 1 and sealing and form with the cylindrical recesses 41 of piston rod 4 end the Second bobbin diameter section 52 sealed, the center of piston 5 is axially arranged with through hole 53 along it, the end that through hole 53 is positioned at the first diameter section 51 is provided with the one-way valve 54 be connected with through hole 53, the sagittal plane that first diameter section 51 is connected with Second bobbin diameter section 52 offers the first groove 55, Second bobbin diameter section 52 offers the second groove 56 be communicated with the first groove 55 vertically on the surface of Second bobbin diameter section 52, namely the first groove 55 and the second groove 56 form the passage that a sectional shape is L shape, gap is left between the end of Second bobbin diameter section 52 and the bottom land of cylindrical recesses 41, first groove 55, second groove 56, gap between Second bobbin diameter section 52 and cylindrical recesses 41, through hole 53 and one-way valve 54 form return flow line, namely the high pressure oil in epicoele 6 flow to the bottom land place of piston 5 and cylindrical recesses 41 successively through the first groove 55, second groove 56, then is back to cavity of resorption 8 by the through hole 53 of piston 5 center through one-way valve 54.
Further, Second bobbin diameter section 52 is connected by Steel Cable Baffle Ring 11 with the cylindrical recesses 41 of piston rod 4 end.
Further, one-way valve 54 passing hole back-up ring 10 is fixedly installed in piston 5 inside.
Working principle of the present utility model is as follows:
As shown in Figure 2, when cylinder efficient, if when cavity of resorption has high pressure oil seepage and accumulates in epicoele, along with piston rise close to cylinder cap time, the long-pending oil of epicoele will produce pressure, because the ring-like cavity cross-sectional area of epicoele is much smaller than the useful area of cavity of resorption oil pocket work, so the pressure that epicoele produces is much larger than cavity of resorption, now, one-way valve opens, the high pressure oil of epicoele is successively through the first groove, second groove, gap between piston and cylindrical recesses, finally enter through hole and flow to cavity of resorption through one-way valve, form the effect of internal reflux, piston rod is finally made to reach maximal tensility
The beneficial effects of the utility model are: 1) by being provided with return flow line in the joint of piston rod and piston, make piston cylinder have internal reflux function, without the need to adding oil return nozzle, eliminate the welding deformation of oil return nozzle; 2) do not need external return tube, avoid producing leakage of oil hidden danger, reduce assembling difficulty simultaneously; 3) overall structure is simple, elegant in appearance.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (4)
1. one kind has the single-acting piston cylinder of internal reflux function, comprise cylinder barrel (1), the cylinder cap (2) matched with cylinder barrel (1) and cylinder bottom (3), piston rod (4) and the piston (5) matched with piston rod (4), it is characterized in that: described cylinder barrel (1) is provided with the bleed screw (7) be communicated with epicoele (6), cylinder bottom (3) is provided with the oil inlet passage (9) be communicated with cavity of resorption (8), described piston rod (4) is provided with return flow line with the joint of piston (5), high pressure oil in epicoele (6) unidirectionally through return flow line can be back to cavity of resorption (8).
2. the single-acting piston cylinder with internal reflux function according to claim 1, it is characterized in that: the end that described piston rod (4) matches with piston (5) is inwardly provided with cylindrical recesses (41), described piston (5) is overall stepped, comprise the first diameter section (51) of being formed with cylinder barrel (1) and sealing and form with the cylindrical recesses (41) of piston rod (4) end the Second bobbin diameter section (52) sealed, the center of described piston (5) is axially arranged with through hole (53) along it, the end that through hole (53) is positioned at the first diameter section (51) is provided with the one-way valve (54) be connected with through hole (53), the sagittal plane that described the first diameter section (51) is connected with Second bobbin diameter section (52) offers the first groove (55), described Second bobbin diameter section (52) offers the second groove (56) be communicated with the first groove (55) vertically on the surface of Second bobbin diameter section (52), gap is left between the end of described Second bobbin diameter section (52) and the bottom land of cylindrical recesses (41), described the first groove (55), second groove (56), gap between Second bobbin diameter section (52) and cylindrical recesses (41), through hole (53) and one-way valve (54) form return flow line.
3. the single-acting piston cylinder with internal reflux function according to claim 2, is characterized in that: described Second bobbin diameter section (52) is connected by Steel Cable Baffle Ring (11) with the cylindrical recesses (41) of piston rod (4) end.
4. the single-acting piston cylinder with internal reflux function according to claim 2, is characterized in that: it is inner that described one-way valve (54) passing hole back-up ring (10) is fixedly installed in piston (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824918.8U CN205064439U (en) | 2015-10-21 | 2015-10-21 | Single effect piston cylinder with inside backward flow function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824918.8U CN205064439U (en) | 2015-10-21 | 2015-10-21 | Single effect piston cylinder with inside backward flow function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064439U true CN205064439U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520824918.8U Active CN205064439U (en) | 2015-10-21 | 2015-10-21 | Single effect piston cylinder with inside backward flow function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205064439U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891104A (en) * | 2016-09-01 | 2019-06-14 | 均胜安全系统收购有限责任公司 | Emission type linear actuators |
| CN112155895A (en) * | 2020-11-25 | 2021-01-01 | 浙江肯特科技股份有限公司 | Intelligent control micro-flow comfortable sleeping mattress |
-
2015
- 2015-10-21 CN CN201520824918.8U patent/CN205064439U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891104A (en) * | 2016-09-01 | 2019-06-14 | 均胜安全系统收购有限责任公司 | Emission type linear actuators |
| CN109891104B (en) * | 2016-09-01 | 2020-10-16 | 均胜安全系统收购有限责任公司 | Vented linear actuator |
| CN112155895A (en) * | 2020-11-25 | 2021-01-01 | 浙江肯特科技股份有限公司 | Intelligent control micro-flow comfortable sleeping mattress |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |