CN1100212C - High load hydraulic cylinder - Google Patents
High load hydraulic cylinder Download PDFInfo
- Publication number
- CN1100212C CN1100212C CN96120565A CN96120565A CN1100212C CN 1100212 C CN1100212 C CN 1100212C CN 96120565 A CN96120565 A CN 96120565A CN 96120565 A CN96120565 A CN 96120565A CN 1100212 C CN1100212 C CN 1100212C
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- China
- Prior art keywords
- pressure
- bearing plate
- piston
- seal ring
- hydraulic cylinder
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- Expired - Fee Related
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Abstract
The present invention relates to a hydraulic cylinder, particularly to a hydraulic drawing cylinder capable of bearing high loads. More than one pressure bearing sheet is respectively arranged on both sides of a driven end, a leak resistant ring is arranged between each pressure bearing sheet and the driven end, and a gap is arranged between each pressure bearing sheet and the driven end; the pressure bearing sheets are fixed in an axial direction by a ring fastener clamped on the driven end, more than one pressure bearing sheet is arranged on the outlet end of a main body of the cylinder, and the gap between each pressure bearing sheet and a cap of the outlet end is provided with a leak resistant ring. Thereby, the present invention can ensure sealing performance under the high loads.
Description
Technical field
The present invention relates to a kind of oil hydraulic cylinder, especially refer to bear the oil hydraulic cylinder of high capacity.
Background technique
At present, the oil hydraulic cylinder of commonly using, as shown in Figure 1, cylinder body 10 outsides of oil hydraulic cylinder are provided with two liquid holes 111, and are provided with a piston rod 20 in the cylinder body 10, and the piston 21 of this piston rod 20 is the seal ring 22 that is equipped with ring of numbers; And the outlet end 11 at cylinder body 10 also is provided with seal ring 22, when liquid (gas) bodies are injected in liquid (gas) hole 11 in 21 in piston, make this piston rod to the propelling of being borrowed liquid (gas) body and expanding-contracting action, yet, this liquid of commonly using (gas) cylinder structure in use still has its drawback; In piston rod 20 expanding-contracting action processes, be by turnover in liquid (gas) hole 111; Make the elastic variation in inner space of cylinder body 10, the piston that drives piston rod 20 makes this piston rod 20 externally be produced power to elastic action in cylinder body 10, and the external power that bears when piston rod 20 is when just pressure is less than load; The pressure that 20 in piston rod is can't pushing tow external or bear that external force is exerted pressure to the gravity of piston rod 20 and when piston 21 reciprocating actions, seal ring 22 on it causes leakage (gas) to embody in friction with the passing of time and resembles, and have to often change seal ring 22, in case stopping leak leaks.
Summary of the invention
In view of this; The purpose of this invention is to provide a kind of high load hydraulic cylinder, on the bi-side of piston, be respectively equipped with more than one pressure-bearing plate, be provided with seal ring between this pressure-bearing plate and the piston, borrow the sealing circle to make and produce a gap between its pressure-bearing plate and the piston, also be provided with at least one pressure-bearing plate and seal ring thereof at cylinder body outlet end in addition.
The object of the present invention is achieved like this: a kind of high load hydraulic cylinder comprises cylinder body and interior piston rod thereof, the end of this piston rod is provided with piston, it is characterized in that: be respectively equipped with more than one pressure-bearing plate on the both sides of piston, be provided with seal ring between this pressure-bearing plate and the piston, and have the gap between pressure-bearing plate and the piston, pressure-bearing plate is to be connected to the and-loop fastener axial restraint on the piston; Also be provided with more than one pressure-bearing plate at cylinder body outlet end again, the gap between this pressure-bearing plate and the outlet end cap also is provided with seal ring.
Be provided with spring sheet in the piston of above-mentioned piston rod and the gap between the pressure-bearing plate; Above-mentioned seal ring is circle or square-section; Above-mentioned seal ring is wedge shape or rectangular cross-section; Above-mentioned seal ring is triangle or multiple layer cross section; Above-mentioned pressure-bearing plate is an elastic component.
Owing to adopt such scheme:, still can guarantee sealability bearing under the high capacity.
Description of drawings
Fig. 1 commonly uses the generalized section of structure.
Fig. 2 first embodiment of the invention generalized section.
Fig. 3 second embodiment of the invention generalized section.
First kind of seal ring artesian condition of Fig. 4 first embodiment of the invention schematic representation.
Second kind of seal ring artesian condition of Fig. 5 first embodiment of the invention schematic representation.
The third seal ring artesian condition schematic representation of Fig. 6 first embodiment of the invention.
The 4th kind of seal ring artesian condition schematic representation of Fig. 7 first embodiment of the invention.
Fig. 8 third embodiment of the invention generalized section.
Among the figure: 10 cylinder bodies, 11 outlet end, liquid hole 111,12 caps, 13 internal faces, 20 piston rods, 21 pistons, 22 pressure-bearing plates, 23 seal rings, 24 gaps, 25 and-loop fastener, 26 elastic components.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 2, this enforcement comprises cylinder body 10 and the interior piston rod 20 that slides with the first novel embodiment, these piston rod 20 ends are provided with piston 21, be in cylinder body 10, to exert pressure by liquid (gas) body, and back and forth flow, it is right to drive piston, makes piston rod 20 be able to telescopic moving and produces power, the bi-side that mainly are this piston 21 are respectively equipped with more than one pressure-bearing plate 22, are provided with seal ring 23 between this pressure-bearing plate 22 and the piston 21; Borrowing seal ring 23 to make to produce between its pressure-bearing plate 22 and the piston 21 gap 24 and this pressure-bearing plate 22 to be provided with and-loop fastener 25 on piston rod 20 is located, and also being provided with at least one pressure-bearing plate 22 at cylinder body 10 outlet end 11, the crack also is provided with seal ring 23 between this pressure-bearing plate 22 and the outlet cap 12;
Liquid (gas) body drives the pressure of pushing that piston rod 20 telescopic movings are produced in cylinder body 10, be to act on the pressure-bearing plate 22, pressure-bearing plate 22 then acts on this stress reaction on the seal ring 23, make its seal ring 23 because of under both crampings of piston 21 and pressure-bearing plate 22, and cylinder body 10 internal faces 13 are pushed reaction, its seal ring 23 and the tightness of cylinder body 10 internal faces 13 are promoted, one seal ring 23 that consumes for the passing of time rubbing has compensation benefit, two bear external force for piston rod 20 promotes, and promotes to obtain the high capacity benefit;
As shown in Figure 3, second embodiment, the piston 21 and pressure-bearing plate 22 gaps 24 of piston rod 20 are provided with spring sheet 26, borrowing this spring sheet 26 that pressure-bearing plate 22 is stressed, during desire compressing seal ring 23, is spring sheet 26 tops to be moved back to oppress seal ring 23 earlier, thus, guarantee that piston rod 20 under no heavy duty situation, reduces friction, make the piston rod 20 of expanding-contracting action have more convenience and pressure-bearing plate 22 promotes in the drag that high load condition is forced to;
Shown in Fig. 4-7, several seal rings 23 artesian conditions of first embodiment, its transverse section can be various geometric shapes, borrow urging of pressure-bearing plate 22, make seal ring to being expanded, so that piston obtains the leakproof benefit of high closeness in the state of rest pressure-bearing or when externally the pushing tow drag produces.
As shown in Figure 8, the 3rd embodiment is directly arranged in seal ring 23 sides with spring sheet, borrows the elastic force of elastic component 26, makes it be subjected to liquid (gas) when urging, and produces distortion and compressing seal ring 23, thereby obtains the leakproof benefit of high closeness.
Claims (6)
1, a kind of high load hydraulic cylinder comprises cylinder body and interior piston rod thereof, and the end of this piston rod is provided with piston; It is characterized in that: be respectively equipped with more than one pressure-bearing plate on the both sides of piston, be provided with seal ring between this pressure-bearing plate and the piston; And have the gap between pressure-bearing plate and the piston, and this pressure-bearing plate is provided with and-loop fastener on piston rod; Also be provided with more than one pressure-bearing plate at cylinder body outlet end again, between this pressure-bearing plate and the outlet end cap between the crack also be provided with seal ring.
2, high load hydraulic cylinder according to claim 1 is characterized in that: be provided with spring sheet in the crack between between the piston of above-mentioned piston rod and the pressure-bearing plate.
3, high load hydraulic cylinder according to claim 1 is characterized in that: above-mentioned seal ring is circle or square-section.
4, high load hydraulic cylinder according to claim 1 is characterized in that: above-mentioned seal ring is wedge shape or rectangular cross-section.
5, high load hydraulic cylinder according to claim 1 is characterized in that: above-mentioned seal ring is triangle or multiple layer cross section.
6, high load hydraulic cylinder according to claim 1 is characterized in that: above-mentioned pressure-bearing plate is an elastic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120565A CN1100212C (en) | 1996-11-15 | 1996-11-15 | High load hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120565A CN1100212C (en) | 1996-11-15 | 1996-11-15 | High load hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1182837A CN1182837A (en) | 1998-05-27 |
| CN1100212C true CN1100212C (en) | 2003-01-29 |
Family
ID=5126419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96120565A Expired - Fee Related CN1100212C (en) | 1996-11-15 | 1996-11-15 | High load hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1100212C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943782A (en) * | 2012-10-13 | 2013-02-27 | 无锡市协清机械制造有限公司 | Piston assembly of nitrogen gas balanced oil cylinder |
| CN103322201A (en) * | 2013-06-18 | 2013-09-25 | 苏州市吴中区欣鑫开关配件厂 | Piston sealing device |
| CN118088519B (en) * | 2024-04-17 | 2024-07-09 | 合肥倍豪海洋装备技术有限公司 | Power mechanism for large sealing ring test fixture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4211150A (en) * | 1977-10-26 | 1980-07-08 | Abex Corporation | Air cylinder |
| CN87104576A (en) * | 1987-06-29 | 1988-04-13 | 邓真根 | Multi-cavity isopiestically sealed cylinder with suspended piston |
| CN88101298A (en) * | 1987-03-10 | 1988-09-21 | 松下电器产业株式会社 | Data drive type air conditioner controller |
| WO1990007064A1 (en) * | 1988-12-13 | 1990-06-28 | Frank Douda Nimmo | A fluid actuated cylinder assembly with a floating cylinder head |
-
1996
- 1996-11-15 CN CN96120565A patent/CN1100212C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4211150A (en) * | 1977-10-26 | 1980-07-08 | Abex Corporation | Air cylinder |
| CN88101298A (en) * | 1987-03-10 | 1988-09-21 | 松下电器产业株式会社 | Data drive type air conditioner controller |
| CN87104576A (en) * | 1987-06-29 | 1988-04-13 | 邓真根 | Multi-cavity isopiestically sealed cylinder with suspended piston |
| WO1990007064A1 (en) * | 1988-12-13 | 1990-06-28 | Frank Douda Nimmo | A fluid actuated cylinder assembly with a floating cylinder head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1182837A (en) | 1998-05-27 |
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