CN205653110U - Preceding calorie of formula hydraulic jack - Google Patents
Preceding calorie of formula hydraulic jack Download PDFInfo
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- CN205653110U CN205653110U CN201620485685.8U CN201620485685U CN205653110U CN 205653110 U CN205653110 U CN 205653110U CN 201620485685 U CN201620485685 U CN 201620485685U CN 205653110 U CN205653110 U CN 205653110U
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Abstract
The utility model discloses a preceding calorie of formula hydraulic jack, including guide sleeve, uide bushing, piston, cylinder body, rear end cap, piston rod and the seal structure of setting on the piston, seal structure includes piston seal structure, guide sleeve seal structure and piston rod seal structure, piston seal structure sets up the cylinder body with between the piston first guide ring and first sealing washer, first guide ring sets up respectively the last downside of first sealing washer, guide sleeve seal structure sets up the piston with between the guide sleeve, the second guide ring, second sealing washer and the first dust ring that set gradually including from the bottom up, piston rod seal structure sets up the piston rod with between the uide bushing, the third sealing washer, third guide ring and the second dust ring that set gradually including from the bottom up. This preceding calorie of formula hydraulic jack's seal structure is sealed effectual, and dwell time length and sealing member arrange that the space is little.
Description
Technical field
This utility model relates to hydraulic jack technical field, particularly relates to cassette hydraulic jack before one.
Background technology
Card jack, front card jack after prestressed stretch-draw facility have at present, the sealing system of stretch-draw jack
All use for reference the sealing system method for designing of engineering machinery, and engineering machinery generally uses frequency height, piston movement
Speed is fast, and stroke is long, and seal arrangement space is the most sufficient.Existing engineering machinery oil cylinder piston seals
The general employing U-shaped circle of twice adds one guide ring, and it is close that piston rod packing typically uses bumper ring to add U-shaped bar
Envelope adds guide ring, and outwardly, place adds dust ring composition.
Use for reference the sealing structure of existing Cylinders of Construction Machinery, at more than supertension 50MPa, will result in and open
Drawing the poorly sealed of jack, cause the dwell time short, changing sealing member frequently affects stretch-draw efficiency and opens
Draw quality.Further, using for reference the sealing structure of engineering machinery, what sealing member used is all heavy in section model,
Cause sealing member to take up room big especially, and then when causing designing jack, overall dimensions becomes big, increases system
While causing this, affect the use of stretch-draw jack, because stretch-draw jack is in use general empty
Between limited.
Utility model content
In view of this, the purpose of this utility model is to propose a kind of front cassette hydraulic jack, this front cassette
The sealing sealing structure of hydraulic jack is effective, dwell time length and also seal arrangement space is little.
Based on above-mentioned purpose, this utility model provide a kind of before cassette hydraulic jack, including punching set,
Fairlead, piston, cylinder body, rear end cap, the piston rod being arranged on piston and sealing structure, described sealing
Structure includes that piston sealing structure, punching set seals structure and piston rod seal, described piston seal
Structure is arranged between described cylinder body and described piston, including the first guide ring and the first sealing ring, and described
One guide ring is separately positioned on the upper and lower sides of described first sealing ring；Described punching set seals structure and is arranged on institute
State between piston and described punching set, including the second guide ring set gradually from top to bottom, the second sealing ring
With the first dust ring；Described piston rod seal is arranged between described piston rod and described fairlead, bag
Include the 3rd sealing ring, the 3rd guide ring and the second dust ring set gradually from top to bottom.
Preferably, described first sealing ring is the Glais ring on narrow limit；The material of described first guide ring is folder cloth
Reinforcing inlay phenolic resin.
Preferably, described second guide ring is folder cloth phenolic aldehyde guide ring, and described second sealing ring is U-shaped close
Seal, and opening down.
Preferably, described U-shaped sealing ring be also arranged above the first back-up ring, and described first back-up ring is tight
Fit described U-shaped sealing ring.
Preferably, described 3rd sealing ring is this special envelope or U-shaped sealing ring.
Preferably, described sealing structure also includes static seal structure, and described static seal structure is arranged in the rear
Between end cap and described cylinder body, between described rear end cap and described punching set, described fairlead and described cylinder body
Between.
Preferably, described static seal structure includes that O and the second back-up ring, described second back-up ring closely paste
Close O.
Preferably, the material of described O is nitrile rubber, and shore hardness is more than 80 degree.
From the above it can be seen that the sealing structure tool of the front cassette hydraulic jack of this utility model offer
Having good sealing characteristics, not only good sealing effect, the dwell time is long, and internal leakage is little, and this sealing knot
Structure is arranged and is concentrated, and can effectively reduce the design size of front card jack, and using for stretch-draw provides convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of cassette hydraulic jack before this utility model embodiment；
Fig. 2 is the partial enlarged drawing in Fig. 1 at A；
Fig. 3 is the partial enlarged drawing in Fig. 1 at B；
Fig. 4 is the partial enlarged drawing in Fig. 1 at C.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with concrete real
Execute example, and referring to the drawings, this utility model is further described.
As an embodiment, the structural representation of the front cassette hydraulic jack that this utility model provides such as figure
Shown in 1.
As it is shown in figure 1, front cassette hydraulic jack includes punching set 1, rear pressing cover 2, rear end cap 3, cylinder
Body 5, fairlead 9 and sealing structure, above-mentioned each parts collectively constitute an annular closed cavity, piston 6
And the piston rod 7 being arranged on piston is movable inside this annular closed cavity, inlet nozzle 4 enters pressure
After power oil, forming stretching force between piston 6 and punching set 1, stretching force size depends on the oil of inlet nozzle 4
The annular cross-sectional area size of hydraulic coupling size and annular closed cavity.Piston between piston 6 and cylinder body 5 is close
Punching set between seal structure, piston 6 and punching set 1 seals between structure and fairlead 9 and piston rod 7
Piston rod seal collectively constituted the sealing structure of front card jack, it is ensured that piston 6 and piston rod 7
Even running in annular closed cavity, it is achieved the smooth execution of stretching force.
Fig. 2 is the partial enlarged drawing in Fig. 1 at A, is the structural representation of piston sealing structure, lives
Plug seal structure include twice the first guide ring 10 with together with the first sealing ring 11, on the outer wall of piston 6 from
Under on be sequentially provided with three road ring-shaped grooves, the first sealing ring 11 is arranged in the ring-shaped groove of centre, the
One guide ring 10 is separately positioned in the ring-shaped groove of the first sealing ring about 11 both sides.
Piston seal requires without internal leakage, and seal arrangement limited space, it is preferred that the first sealing ring
11 is the OE sealing ring on narrow limit, and the material of the first guide ring 10 is folder cloth reinforcing inlay phenolic resin；The
One guide ring 10, to the supporting of 6, piston, guide effect, prevents its scratch or bias, and improves sealing member
Durability；First guide ring 10 use folder cloth reinforcing inlay phenolic resin, have fabulous bearing capacity and
Wearability.
Fig. 3 is the partial enlarged drawing in Fig. 1 at B, is punching set and seals the structural representation of structure,
Punching set seals structure and includes second guide ring the 12, second sealing ring 13 of setting gradually from top to bottom and the
One dust ring 15.Three road ring-shaped grooves it are sequentially provided with from top to bottom, near rear end cap 3 on the inwall of piston 6
First ring-shaped groove in together the second guide ring 12 is set, near the second annular ditch of rear end cap 3
Second sealing ring 13 together is set in groove, arranges the most anti-in the 3rd road ring-shaped groove of rear end cap 3
Konisphere 15.
Punching is mainly overlapped 1 supporting, guide effect by the second guide ring 12, prevents its scratch or bias,
And improve the durability of sealing member.Preferably, the second guide ring 12 is folder cloth phenolic aldehyde guide ring, effectively controls
The beat of piston 6 processed, and the guide ring material that the second guide ring 12 is selected has high-wearing feature and high-strength
Degree.
Preferably, the second sealing ring 13 is U-shaped sealing ring, and opening down, the top of U-shaped sealing ring
It is additionally provided with the first back-up ring 14, and the first back-up ring 14 fits tightly U-shaped sealing ring, U-shaped sealing ring and first
Back-up ring 14 is co-located in the second ring-shaped groove of rear end cap 3, and first gear joined by U-shaped sealing ring
The combination of circle 14, has that sealing property is excellent, dwell pressure is high, dwell time length and sealing member use the longevity
The advantage that life is long.
Dust ring 15 is positioned close in the 3rd road ring-shaped groove of rear end cap 3, is possible to prevent the ash in the external world
Dirt enters annular closed intracavity so that it is strong that front cassette hydraulic jack of the present utility model offends and disobey with rude remarks outside contamination ability.
Fig. 4 is the partial enlarged drawing in Fig. 1 at C, is the structural representation of piston rod seal,
Piston rod seal includes the 3rd sealing ring 16, the 3rd guide ring 17 and set gradually from top to bottom
Two dust rings 18.Three road ring-shaped grooves it are sequentially provided with from top to bottom on the inwall of fairlead 9, bottom
The 3rd sealing ring 16 it is provided with, it is preferred that the 3rd sealing ring 16 is this special envelope in one ring-shaped groove, in order to
Reduce the arrangement space of sealing member, this special envelope that piston rod seal preferred site of the present utility model is less
For primary seal, because pressure is the least during oil return, primary seal of the present utility model fully meets requirement；
The 3rd guide ring 17 being one high-wearing feature with high intensity it is provided with in one ring-shaped groove of this special envelope,
The beat of piston can be controlled equally；Second dust ring together is set in fairlead 9 one ring-shaped groove of outermost
18, it is possible to prevent the dust in the external world to enter annular closed intracavity so that front cassette hydraulic pressure thousand of the present utility model
It is strong that jin offends and disobey with rude remarks outside contamination ability.
3rd guide ring 17 is main to the supporting of 7, piston rod, guide effect, prevents it to be scraped off or eccentric,
And improve the durability of sealing member.Owing to piston rod packing is that hydraulic jack backhaul seals, pressure is little, adopts
By 1 this special envelope, piston rod 7 is sealed.Si Te envelope is single-acting sealing ring, and it has and Glais ring
Similar sealing characteristics, and its narrow width, can effectively reduce the stretch-draw space of jack.
Preferably, the primary seal of piston rod seal may be used without the U-shaped sealing ring of small bore, need not
Add back-up ring.
Seal structure and farther include static seal structure 19, see that Fig. 1, this utility model static seal structure all adopt
Add the form of the second back-up ring with O one side, the second back-up ring fits tightly O, is co-located on ring
In shape groove.
Preferably, O material selection nitrile rubber, owing to rated pressure is relatively big, the shore of O is hard
Degree is more than 80 degree；And O have to add back-up ring, damages to prevent O to be squeezed into fit clearance
Bad.O gap is relevant with the hardness of O, the diameter of section of O and pressure medium.Quiet close
Seal structure 19 is arranged between rear end cap 3 and cylinder body 5, rear end cap 3 and punching set 1 between, fairlead
Between 9 and cylinder body 5, it is ensured that the sealing of annular closed cavity.
The sealing structure of the front cassette hydraulic jack that this utility model provides has good sealing characteristics, no
Only good sealing effect, the dwell time is long, and internal leakage is little, and this sealing structure is arranged and concentrated, can be effective
The design size of card jack before reducing, uses for stretch-draw and provides convenient.
It should be noted that all uses " first " and the statement of " second " in this utility model embodiment
It is for the parameter of entity or the non-equal distinguishing two same names non-equal, it is seen that " first " " the
Two " only for the convenience of statement, should not be construed as the restriction to this utility model embodiment, subsequent embodiment
This is illustrated the most one by one.
Those of ordinary skill in the field it is understood that the discussion of any of the above embodiment is exemplary only,
It is not intended to imply that the scope of the present disclosure (including claim) is limited to these examples；At this utility model
Thinking under, can also be combined between the technical characteristic in above example or different embodiment, and
There is other change of many of different aspect of the present utility model as above, in order to concisely they do not exist
Details provides.Therefore, all within spirit of the present utility model and principle, any omission of being done, repair
Change, equivalent, improvement etc., within should be included in protection domain of the present utility model.
Claims (8)
1. cassette hydraulic jack before a kind, it is characterised in that include punching set, fairlead, piston,
Cylinder body, rear end cap, the piston rod being arranged on piston and sealing structure, described sealing structure includes that piston is close
Seal structure, punching set seals structure and piston rod seal, and described piston sealing structure is arranged on described
Between cylinder body and described piston, including the first guide ring and the first sealing ring, described first guide ring sets respectively
Put the upper and lower sides at described first sealing ring；Described punching set sealing structure is arranged on described piston and wears with described
Between heart set, including the second guide ring set gradually from top to bottom, the second sealing ring and the first dust ring；
Described piston rod seal is arranged between described piston rod and described fairlead, including the most successively
The 3rd sealing ring, the 3rd guide ring and the second dust ring arranged.
Front cassette hydraulic jack the most according to claim 1, it is characterised in that described first close
Seal is the Glais ring on narrow limit；The material of described first guide ring is folder cloth reinforcing inlay phenolic resin.
Front cassette hydraulic jack the most according to claim 1, it is characterised in that described second leads
Xiang Huanwei presss from both sides cloth phenolic aldehyde guide ring, and described second sealing ring is U-shaped sealing ring, and opening down.
Front cassette hydraulic jack the most according to claim 3, it is characterised in that described U-shaped close
Seal be also arranged above the first back-up ring, and described first back-up ring fits tightly described U-shaped sealing ring.
Front cassette hydraulic jack the most according to claim 1, it is characterised in that described 3rd close
Seal is this special envelope or U-shaped sealing ring.
Front cassette hydraulic jack the most according to claim 1, it is characterised in that described sealing is tied
Structure also include static seal structure, described static seal structure be arranged between described rear end cap and described cylinder body, institute
State between rear end cap and described punching set, between described fairlead and described cylinder body.
Front cassette hydraulic jack the most according to claim 6, it is characterised in that described static seal
Structure includes that O and the second back-up ring, described second back-up ring fit tightly O.
Front cassette hydraulic jack the most according to claim 7, it is characterised in that described O
Material be nitrile rubber, shore hardness be more than 80 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620485685.8U CN205653110U (en) | 2016-05-25 | 2016-05-25 | Preceding calorie of formula hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620485685.8U CN205653110U (en) | 2016-05-25 | 2016-05-25 | Preceding calorie of formula hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205653110U true CN205653110U (en) | 2016-10-19 |
Family
ID=57405273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620485685.8U Active CN205653110U (en) | 2016-05-25 | 2016-05-25 | Preceding calorie of formula hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205653110U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672846A (en) * | 2017-03-13 | 2017-05-17 | 钟浪雅 | Front-clamping type hydraulic jack having pressure overload alarming function |
| CN109441498A (en) * | 2019-01-03 | 2019-03-08 | 辽宁工程技术大学 | A kind of resistant to pollution hydraulic vertical prop structure |
| CN112093703A (en) * | 2020-10-13 | 2020-12-18 | 衡阳市雄焱工具有限公司 | Two-stage hydraulic jack |
| CN114235361A (en) * | 2021-11-30 | 2022-03-25 | 潍柴动力股份有限公司 | Engine piston and engine piston fatigue test device |
-
2016
- 2016-05-25 CN CN201620485685.8U patent/CN205653110U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672846A (en) * | 2017-03-13 | 2017-05-17 | 钟浪雅 | Front-clamping type hydraulic jack having pressure overload alarming function |
| CN109441498A (en) * | 2019-01-03 | 2019-03-08 | 辽宁工程技术大学 | A kind of resistant to pollution hydraulic vertical prop structure |
| CN109441498B (en) * | 2019-01-03 | 2024-05-24 | 辽宁工程技术大学 | Anti-pollution hydraulic upright post structure |
| CN112093703A (en) * | 2020-10-13 | 2020-12-18 | 衡阳市雄焱工具有限公司 | Two-stage hydraulic jack |
| CN112093703B (en) * | 2020-10-13 | 2021-12-24 | 衡阳市雄焱工具有限公司 | Two-stage hydraulic jack |
| CN114235361A (en) * | 2021-11-30 | 2022-03-25 | 潍柴动力股份有限公司 | Engine piston and engine piston fatigue test device |
| US11761853B2 (en) | 2021-11-30 | 2023-09-19 | Weichai Power Co., Ltd. | Engine piston and fatigue testing apparatus for engine piston |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |