CN106195261B - A kind of hollow piston bar assembly for preventing pollution hydraulic oil - Google Patents
A kind of hollow piston bar assembly for preventing pollution hydraulic oil Download PDFInfo
- Publication number
- CN106195261B CN106195261B CN201610782187.4A CN201610782187A CN106195261B CN 106195261 B CN106195261 B CN 106195261B CN 201610782187 A CN201610782187 A CN 201610782187A CN 106195261 B CN106195261 B CN 106195261B
- Authority
- CN
- China
- Prior art keywords
- hole
- piston bar
- hydraulic oil
- hollow piston
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 230000032798 delamination Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000035699 permeability Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J7/00—Piston-rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
The invention belongs to piston rod assembly technical field, a kind of hollow piston bar assembly for preventing pollution hydraulic oil is disclosed, makes that hollow piston rod can not be met the requirements there is hole size, endoporus roughness difference causes running of hydraulic power oil resistance big and pollution hydraulic oil for solving the problems, such as existing using seamless steel pipe.The present invention includes the piston bar body with through hole, and the through hole of the piston bar body is the through hole being directly process using depth drill processing.The present invention directly processes piston rod through-hole by depth drill processing, hollow piston rod is made using seamless steel pipe compared with prior art, required hole size can be needed to process according to hydraulic cylinder, have the characteristics that bore area is smooth at the same time, reduce fluid resistance of the hydraulic oil in course of conveying, the situation of delamination will not occur at the same time, so that hydraulic oil will not be polluted due to spot.
Description
Technical field
The invention belongs to piston rod assembly technical field, and in particular to a kind of hollow piston rod group for preventing pollution hydraulic oil
Part.
Background technology
Hollow piston rod can be used when very more in hydraulic cylinder production process, hydraulic oil is from hollow piston rod
Hollow parts flow through, to reach the use of next stage hydraulic test.Production hollow piston rod is carried out using seamless steel pipe at present
After heat treatment again Vehicle Processing, grinding, plating, polishing and produce, to the endoporus of hollow piston rod all without processing.Due to
Hollow piston rod is not processed, so internal control size all can only be as the hole size of seamless steel pipe, to one
The hollow piston rod required a bit to hole size can not all produce, otherwise internal control is too big, otherwise it is too small.
And since the inside surface roughness of seamless steel pipe is excessively poor, the flowing to hydraulic oil causes very big resistance,
If through Overheating Treatment, the inner wall of seamless steel pipe can produce delamination, can not clean out at all, hydraulic oil is caused very
Big pollution.
The content of the invention
The present invention can not meet to want to solve existing use seamless steel pipe making hollow piston rod there is hole size
Ask, endoporus roughness difference causes running of hydraulic power oil resistance big and the problem of pollution hydraulic oil, and providing one kind prevents contaminated liquid
The hollow piston bar assembly of pressure oil, can need to process required hole size according to hydraulic cylinder, while have endoporus
The characteristics of surface is smooth, reduces fluid resistance of the hydraulic oil in course of conveying, while the situation of delamination will not occurs, so that
Hydraulic oil will not be polluted due to spot.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of hollow piston bar assembly for preventing pollution hydraulic oil, including the piston bar body with through hole, its feature exist
In the through hole of the piston bar body is the through hole being directly process using depth drill processing.
Further, the roughness of the through hole is Ra0.8.
Further, the grade of tolerance of the through hole is H11.
Further, the hollow piston bar assembly further includes cylinder barrel, and the end of the cylinder barrel is equipped with cylinder cap, the work
One end of stopper rod body passes through cylinder cap, and the cylinder cap is provided with level-one step and two stage steps, is set on the inner wall of the cylinder barrel
There is the step to cooperate respectively with level-one step and two stage steps, it is O-shaped to be provided with first on the step surface of the level-one step
Enclose, the thread to cooperate with cylinder barrel is provided with the table top of the two stage steps, is also set up on the table top of the two stage steps
There is the second O-ring, second O-ring is also equipped with back bracket ring.
Further, the thread is arranged on the cylinder cap between the first O-ring and the second O-ring.
Further, the cylinder cap is additionally provided with the sealing ring for being sealed with piston bar body.
Compared with prior art, the invention has the advantages that：
The hollow piston bar assembly for preventing pollution hydraulic oil of the present invention, including the piston bar body with through hole, it is described
The through hole of piston bar body is the through hole being directly process using depth drill processing.The present invention is directly added by depth drill processing
Work goes out piston rod through-hole, makes hollow piston rod using seamless steel pipe compared with prior art, can be added according to the needs of hydraulic cylinder
Work goes out required hole size, while has the characteristics that bore area is smooth, reduces fluid of the hydraulic oil in course of conveying
Resistance, while the situation of delamination will not occur, so that hydraulic oil will not be polluted due to spot.
The cost ratio for the hollow piston rod being process at the same time using depth drill makes low 20% using seamless steel pipe, section
The about cost of production and manufacture.
The present invention is by setting two stage steps so that the position length of cylinder cap increases than the position length of the cylinder cap of the prior art
Several times are added, even if the tooth of cylinder cap and cylinder barrel produces loosening, because cylinder cap coordinates position length length, the upset displacement of generation is very
It is small, while the situation of permeability will not be caused under the sealing function of the first O-ring and the second O-ring, while can also prevent stopping loss
Bad piston rod.
The present invention not only increases the service life of product, while save significantly due to solving the problems, such as permeability and oil leak
The about expense of after-sale service.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Marked in figure：1st, piston bar body, 2, through hole, 3, cylinder barrel, 4, cylinder cap, 5, sealing ring, the 6, first O-ring, 7, spiral shell
Tooth, the 8, second O-ring, 9, back bracket ring.
Embodiment
With reference to embodiment, the invention will be further described, and described embodiment is only a present invention part
Embodiment, is not whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Other embodiments used obtained under the premise of creative work, belong to protection scope of the present invention.
With reference to attached drawing, the hollow piston bar assembly for preventing pollution hydraulic oil of the invention, including the piston rod with through hole 2
Body 1, the through hole 2 of the piston bar body 1 are the through hole being directly process using depth drill processing.The present invention passes through deep hole
Bore processing and directly process piston rod through-hole 2, hollow piston rod is made using seamless steel pipe compared with prior art, can be according to liquid
Cylinder pressure needs to process required hole size, while has the characteristics that bore area is smooth, reduces hydraulic oil and is conveying
During fluid resistance, while the situation of delamination will not occur, so that hydraulic oil will not be polluted due to spot.
The cost ratio for the hollow piston rod being process at the same time using depth drill makes low 20% using seamless steel pipe, section
The about cost of production and manufacture.
As a kind of preferable mode of the present invention, the roughness of the through hole 2 is Ra0.8；The grade of tolerance of the through hole 2
For H11.
Wherein depth drill belongs to the prior art, and those skilled in the art can be appreciated and understood that details are not described herein.It is existing
Having technical staff is process using seamless steel pipe for hollow piston rod.
The hollow piston bar assembly of the present invention further includes cylinder barrel 3, and the end of the cylinder barrel 3 is equipped with cylinder cap 4, the piston
One end of bar body 1 passes through cylinder cap 4, and the cylinder cap 4 is provided with level-one step and two stage steps, is set on the inner wall of the cylinder barrel 3
The step to cooperate respectively with level-one step and two stage steps is equipped with, the first O is provided with the step surface of the level-one step
Type circle 6, is provided with the thread 7 to cooperate with cylinder barrel 3 on the table top of the two stage steps, on the table top of the two stage steps also
The second O-ring 8 is provided with, second O-ring 8 is also equipped with back bracket ring 9.Wherein, the level-one step that the present invention is told about is remote
From the head side of cylinder bottom, two stage steps position is close to the head side of cylinder bottom 2, and the present invention is by setting two stage steps so that cylinder cap
Position length than the position length of the cylinder cap of the prior art add several times (in the prior art cylinder cap 4 all be use level-one platform
Rank, so as to cause the position length of cylinder cap short, i.e., adds position length, by setting level-one step and two under identical size
Level step, is all the position length of cylinder cap from the length between level-one step and two stage steps, so that position length increases
Several times), even if the tooth of cylinder cap 4 and cylinder barrel 3 produces loosening, because cylinder cap coordinates position length length, the upset displacement of generation is non-
It is often small, while the situation of permeability will not be caused (even if saying the second O-ring under the sealing function of the first O-ring and the second O-ring
There is situation about leaking, sealing function can also be realized under the action of the first O-ring, realizes dual-seal), while also can
Prevent damage piston rod.
The present invention not only increases the service life of product, while save significantly due to solving the problems, such as permeability and oil leak
The about expense of after-sale service.
Further, the thread 7 is arranged on the cylinder cap between the first O-ring 6 and the second O-ring 8.
As a kind of preferable mode of the present invention, the cylinder cap 4 is additionally provided with for being sealed with piston bar body 1
Sealing ring 5.
Claims (3)
1. a kind of hollow piston bar assembly for preventing pollution hydraulic oil, including the piston bar body with through hole, it is characterised in that
The through hole of the piston bar body is the through hole being directly process using depth drill processing；The roughness of the through hole is
Ra0.8；The grade of tolerance of the through hole is H11；The hollow piston bar assembly further includes cylinder barrel, and the end of the cylinder barrel arranges
There is cylinder cap, one end of the piston bar body passes through cylinder cap, and the cylinder cap is provided with level-one step and two stage steps, the cylinder barrel
Inner wall on be provided with the step to cooperate respectively with level-one step and two stage steps, set on the step surface of the level-one step
The first O-ring is equipped with, the thread to cooperate with cylinder barrel, the platform of the two stage steps are provided with the table top of the two stage steps
The second O-ring is additionally provided with face, second O-ring is also equipped with back bracket ring.
2. the hollow piston bar assembly according to claim 1 for preventing pollution hydraulic oil, it is characterised in that the thread is set
Put on the cylinder cap between the first O-ring and the second O-ring.
3. the hollow piston bar assembly according to claim 2 for preventing pollution hydraulic oil, it is characterised in that the cylinder cap is also
It is provided with the sealing ring for being sealed with piston bar body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610782187.4A CN106195261B (en) | 2016-08-30 | 2016-08-30 | A kind of hollow piston bar assembly for preventing pollution hydraulic oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610782187.4A CN106195261B (en) | 2016-08-30 | 2016-08-30 | A kind of hollow piston bar assembly for preventing pollution hydraulic oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106195261A CN106195261A (en) | 2016-12-07 |
| CN106195261B true CN106195261B (en) | 2018-05-01 |
Family
ID=58086654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610782187.4A Expired - Fee Related CN106195261B (en) | 2016-08-30 | 2016-08-30 | A kind of hollow piston bar assembly for preventing pollution hydraulic oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106195261B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688125A (en) * | 2022-04-26 | 2022-07-01 | 徐州炎黄工程机械有限公司 | A piston rod cavity oil storage cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2649841Y (en) * | 2003-09-26 | 2004-10-20 | 江都市永坚有限公司 | Double-acting piston type multi-stage hydraulic cylinder |
| CN103906932A (en) * | 2011-11-01 | 2014-07-02 | Kyb-Ys株式会社 | Fluid pressure cylinder and its manufacturing method |
| CN203717523U (en) * | 2014-02-28 | 2014-07-16 | 中联重科股份有限公司 | Amplitude-variable hydraulic cylinder and engineering machinery with same |
| CN105041768A (en) * | 2015-08-27 | 2015-11-11 | 三一重型装备有限公司 | Mine hydraulic cylinder capable of achieving hydraulic medium replacement under pressure |
| CN205173123U (en) * | 2015-10-12 | 2016-04-20 | 江苏恒立高压油缸股份有限公司 | Safe and reliable derrick lifts multistage jar |
| CN206017705U (en) * | 2016-08-30 | 2017-03-15 | 四川悦安重工机械装备有限公司 | A kind of hollow piston rod assembly that prevents contaminated liquid force feed |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3827188B2 (en) * | 1999-02-24 | 2006-09-27 | カヤバ工業株式会社 | Flow path forming method in fluid pressure cylinder |
-
2016
- 2016-08-30 CN CN201610782187.4A patent/CN106195261B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2649841Y (en) * | 2003-09-26 | 2004-10-20 | 江都市永坚有限公司 | Double-acting piston type multi-stage hydraulic cylinder |
| CN103906932A (en) * | 2011-11-01 | 2014-07-02 | Kyb-Ys株式会社 | Fluid pressure cylinder and its manufacturing method |
| CN203717523U (en) * | 2014-02-28 | 2014-07-16 | 中联重科股份有限公司 | Amplitude-variable hydraulic cylinder and engineering machinery with same |
| CN105041768A (en) * | 2015-08-27 | 2015-11-11 | 三一重型装备有限公司 | Mine hydraulic cylinder capable of achieving hydraulic medium replacement under pressure |
| CN205173123U (en) * | 2015-10-12 | 2016-04-20 | 江苏恒立高压油缸股份有限公司 | Safe and reliable derrick lifts multistage jar |
| CN206017705U (en) * | 2016-08-30 | 2017-03-15 | 四川悦安重工机械装备有限公司 | A kind of hollow piston rod assembly that prevents contaminated liquid force feed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106195261A (en) | 2016-12-07 |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20200830 |
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| CF01 | Termination of patent right due to non-payment of annual fee |