CN106351891A - Pressure relief device for hydraulic oil tank - Google Patents
Pressure relief device for hydraulic oil tank Download PDFInfo
- Publication number
- CN106351891A CN106351891A CN201611065079.1A CN201611065079A CN106351891A CN 106351891 A CN106351891 A CN 106351891A CN 201611065079 A CN201611065079 A CN 201611065079A CN 106351891 A CN106351891 A CN 106351891A
- Authority
- CN
- China
- Prior art keywords
- hydraulic oil
- piston
- cylindrical body
- oil container
- pressure relief
- 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.)
- Pending
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Classifications
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention relates to a pressure relief device for a hydraulic oil tank. The pressure relief device comprises a pressure relief device and an air filtering device, wherein the pressure relief device comprises a horizontal extending tubular body, a first piston, a first spring, a second piston and a second spring, and the air filtering device comprises an air filter, an end-through joint and a hose; the pressure relief device is assembled on a hydraulic oil tank structural part through a second sealing ring and screws, and the air filtering device is assembled on the pressure relief device through the end-through joint. In the pressure relief device for the hydraulic oil tank provided by the invention, the first spring is arranged on the first piston and the second piston, the second spring is arranged between the second piston and the tubular body, the elasticity of the first spring and the second spring is smaller than the force borne by deformation of the hydraulic oil tank structural part, therefore, when the hydraulic oil flows into and out of the hydraulic oil tank structural part, the pressure generated is preferentially absorbed by the spring, and the hydraulic oil tank structural part is prevented from bearing pressure, and thus the cracking problem of the hydraulic oil tank structural part is fundamentally solved.
Description
Technical field:
The present invention relates to technical field of hydraulic pressure, in particular it relates to a kind of hydraulic oil container pressure relief device, more particularly to it is used for
A kind of hydraulic oil container pressure relief device of crawler hypraulic excavator and its using method.
Background technology:
At present, the hydraulic oil container that excavator is used is not provided with pressure relief device, therefore, when working arm of excavating machine returns rapidly
In the time receiving, hydraulic oil-returning rapidly can be filled with hydraulic oil container, leads to hydraulic oil container internal cavity volume to diminish, fuel tank internal gas pressure drastically increases
Greatly, the born pressure of hydraulic oil tank structure part is increased dramatically；Fluid quilt when digger operating device launches, in hydraulic oil container
Rapidly suction out, lead to hydraulic oil container internal cavity volume to increase, fuel tank internal gas pressure strongly reduces, the born pressure of hydraulic oil tank structure part
Power strongly reduces；Because digging machine equipment acts frequently, the structural member internal cavity of hydraulic oil container can be made to be in stretched and relaxed
State, the cracking of hydraulic oil tank structure part if things go on like this, can be led to, had a strong impact on the use longevity of hydraulic oil tank structure part
Life.
In prior art, the hydraulic oil container of crawler hypraulic excavator is typically employed in top of oil-tank and installs prepressing type air
The mode of cleaner, the internal gas pressure of balanced hydraulic fuel tank, plays the effect of pressure release.
Specifically, at hydraulic oil container top, one pre-compressed air cleaner is installed, this pre-compressed air cleaner
For cylindrical shape, in the perforate of described cylinder center, equipped with border defecator outside cylinder, extraneous air, through defecator, enters
Enter cylinder center hole, and then enter hydraulic oil container.
Working environment due to excavator stirs up a cloud of dust, and quite badly, uses for a long time under this operating mode, air filter
Defecator easily blocks because of dust suction, leads to fuel tank pressure release to be lost efficacy.
Content of the invention:
The present invention solves the deficiencies in the prior art and provides a kind of basic cracking solving hydraulic oil tank structure part, extends liquid
The hydraulic oil container pressure relief device for crawler hypraulic excavator of the service life of force feed box structure part.
The present invention employs the following technical solutions realization:
A kind of hydraulic oil container pressure relief device, including the cylindrical body being arranged in hydraulic oil container, described cylindrical body is that middle part is empty
The cylinder of the heart, the tail end of described cylindrical body is connected with hydraulic oil container inner wall sealing, and the middle part of described cylindrical body is provided with least two
Piston, the front opening of described cylindrical body is connected with hydraulic oil container, and described piston is connected with cylindrical body inner wall sealing, adjacent described
It is provided with gap between piston to be formed between the first cavity and adjacent described piston by the first spring connection, described piston and cylinder
It is provided with gap between the end of shape body to form the second cavity and be connected by second spring between piston and the end of cylindrical body.
Also include air filter, described air filter includes air filter, end straight coupling and flexible pipe, empty
Pass through flexible pipe below air filter to connect with the second cavity with end straight coupling.
Piston includes first piston and second piston, is provided with the first sealing between described first piston and cylindrical body inwall
Circle, is provided with the second sealing ring between second piston and cylindrical body inwall.
The elastic force of described first spring and second spring makes a concerted effort to be less than the minimum force that Oiltank structure part produces deformation.
Described cylindrical body is horizontally arranged at the side wall of hydraulic oil container or the top being vertically installed at hydraulic oil container.
Described cylindrical body is connected by dismountable attachment structure with hydraulic oil container main body.
Due to adopting said structure, when hydraulic oil turnover fuel tank when, produced pressure can preferentially by the first spring, second
Spring absorbs, it is to avoid the pressure that hydraulic oil tank structure part bears, thus in the cracking fundamentally solving hydraulic oil tank structure part
Problem, is respectively provided with the first sealing ring and the second sealing ring, can play two-stage between first piston, second piston and cylindrical body
The effect of dust seal, be can achieve the cleaning of second piston, is dismountable company between cylindrical body and hydraulic oil container by air
Access node structure, can facilitate the replacing of part and cleaning in described tubular body.
Brief description
Fig. 1 pressure relief device structural representation；
Fig. 2 hydraulic oil container high level schematic diagram；
Fig. 3 hydraulic oil container low liquid level schematic diagram；
The vertically-mounted structural representation of Fig. 4 pressure relief device；
Reference:
In figure 1, cylindrical body；2nd, first piston；3rd, the first spring；4th, second piston；5th, second spring；6th, screw；7th, hold
Straight coupling；8th, flexible pipe；9th, air filter；10th, the first cavity；11st, the second cavity；12nd, the first sealing ring；13rd, second is close
Seal；
Specific embodiment:
For making purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class
As the label element that represents same or similar element or there is same or like function.Below in conjunction with the accompanying drawings to the present invention's
Embodiment is described in detail.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", "front", "rear",
The orientation of instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " or position relationship are based on accompanying drawing institute
The orientation showing or position relationship, are for only for ease of the description present invention and simplify description, rather than the dress of instruction or hint indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that protecting to the present invention
The restriction of scope.
Hydraulic oil container pressure relief device shown in Fig. 1, Fig. 2, Fig. 3 includes: cylindrical body 1；First piston 2；First spring 3；Second
Piston 4；Second spring 5.Cylindrical body 1 is cylindrical shape, horizontal-extending, open at one end.Cylindrical body 1 is used for installing first piston 2
End (left end of in figure) is referred to as first end, and the relative other end (right-hand member of in figure) is referred to as the second end.
In the middle of described first piston 2 and second piston 4, first spring 3, second piston 4 and cylindrical body 1 second end are installed
Centre is provided with second spring 5.When hydraulic oil-returning is rapidly filled with hydraulic oil container, when fuel tank inner fluid is in high level (referring to
Fig. 2), fluid promotes first piston 2 to move to cylindrical body 1 second end, preferential compression the first spring 3.First spring 3 promotes second
Piston 4 to cylindrical body 1 second end move, compress second spring 5, until the first spring 3, second spring 5 make a concerted effort and fluid pressure
Dynamic balance, piston stop motion, the tank pressure of increase is absorbed by the first spring 3, second spring 5, is converted into elastic potential energy
Temporary；When hydraulic oil container fluid rapidly suctions out hydraulic oil container, fuel tank inner fluid is in low liquid level (referring to Fig. 3), the first spring 3
First piston 2 is promoted to move to cylindrical body 1 first end, meanwhile, second spring 5 promotes second piston 4 to move to cylindrical body first end
Dynamic, until the making a concerted effort and oil liquid pressure balance of the first spring 3, second spring 5, piston stop motion, in this process first spring
3rd, second spring 5 will be kept in obtain elastic potential energy release, promotes first piston 2, second piston 4 to reset.Due to the first spring 3,
The power being less than the generation deformation of hydraulic oil tank structure part with joint efforts of second spring 5, when hydraulic oil turnover fuel tank, produced pressure
Can preferentially be absorbed by the first spring 3, second spring 5, it is to avoid the pressure that hydraulic oil tank structure part bears, thus fundamentally solving
The cracking of hydraulic oil tank structure part.
Described pressure relief device, be respectively provided between first piston 2, second piston 4 and cylindrical body 1 first sealing ring 12,
Second sealing ring 13, can play the effect of two-stage dust seal.
In the illustrated embodiment, air filter, described air filter bag are set at described cylindrical body 1 second end
Include air filter 9, end straight coupling 7 and flexible pipe 8, described air filter 9 is passed through flexible pipe 8 and connected with end straight coupling 9, institute
State end straight coupling 9 to be fixed on hydraulic oil container outer wall by screw 6, described end straight coupling 9 is connected with the second cavity, second
It is full of air in the second cavity 11 between piston 4 and cylindrical body 1 second end, and be communicated with the outside by air filter 9；When
When second piston 4 moves right, air is discharged hydraulic oil container through air filter 9 from cavity 11, conversely, extraneous air
Enter cavity 11 from air filter 9 it is ensured that first piston 2 and second piston 4 can smoothly be moved left and right.
The hydraulic oil container pressure relief device of the second embodiment of the present invention (Fig. 4) and previous embodiments include pressure relief device
And air filter, described pressure relief device is vertically arranged to hydraulic oil container top it is advantageous to described cylindrical body 1 and hydraulic pressure
For example, (such as bolt connection etc is threaded, and flange connects etc. for dismountable attachment structure that is connected by of fuel tank main body
Deng using dismountable attachment structure, the replacing of part and cleaning in described cylindrical body 1 can be facilitated.
Finally it is pointed out that above example, only in order to technical scheme to be described, is not intended to limit.To the greatest extent
Pipe has been described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that: it is still
Technical scheme described in foregoing embodiments can be modified, or wherein some technical characteristics are carried out with equivalent replacing
Change；And these modifications or replacement, do not make the essence of appropriate technical solution depart from the essence of various embodiments of the present invention technical scheme
God and scope.
Claims (6)
1. a kind of hydraulic oil container pressure relief device it is characterised in that: include being arranged on cylindrical body in hydraulic oil container, described cylindrical body
For the hollow cylinder in middle part, the tail end of described cylindrical body is connected with hydraulic oil container inner wall sealing, and the middle part of described cylindrical body is provided with
At least two pistons, the front opening of described cylindrical body is connected with hydraulic oil container, and described piston is connected with cylindrical body inner wall sealing,
It is provided with gap between adjacent described piston and is formed and connected by the first spring between the first cavity and adjacent described piston, described
It is provided with gap between piston and the end of cylindrical body to form the second cavity and between piston and the end of cylindrical body, pass through second
Spring connects.
2. hydraulic oil container pressure relief device according to claim 1 it is characterised in that: also include air filter, described
Air filter includes air filter, end straight coupling and flexible pipe, passes through flexible pipe and end is straight below described air filter
Pass joint is connected with the second cavity.
3. hydraulic oil container pressure relief device according to claim 1 and 2 it is characterised in that: described piston includes first piston
And second piston, the first sealing ring is installed, between second piston and cylindrical body inwall between described first piston and cylindrical body inwall
Second sealing ring is installed.
4. hydraulic oil container pressure relief device according to claim 3 it is characterised in that: described first spring and second spring
Elastic force makes a concerted effort to be less than the minimum force that Oiltank structure part produces deformation.
5. hydraulic oil container pressure relief device according to claim 4 it is characterised in that: described cylindrical body is horizontally arranged at hydraulic pressure
The side wall of fuel tank or the top being vertically installed at hydraulic oil container.
6. hydraulic oil container pressure relief device according to claim 5 it is characterised in that: described cylindrical body and hydraulic oil container main body
Be connected by dismountable attachment structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611065079.1A CN106351891A (en) | 2016-11-28 | 2016-11-28 | Pressure relief device for hydraulic oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611065079.1A CN106351891A (en) | 2016-11-28 | 2016-11-28 | Pressure relief device for hydraulic oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106351891A true CN106351891A (en) | 2017-01-25 |
Family
ID=57862441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611065079.1A Pending CN106351891A (en) | 2016-11-28 | 2016-11-28 | Pressure relief device for hydraulic oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106351891A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437537A (en) * | 2018-04-28 | 2018-08-24 | 浙江易锻精密机械有限公司 | A kind of overload jointing mechanism |
Citations (7)
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|---|---|---|---|---|
| CN1128328A (en) * | 1995-01-06 | 1996-08-07 | 孙超 | High-power energy storage device |
| CN2644744Y (en) * | 2003-05-08 | 2004-09-29 | 上海隧道工程股份有限公司 | Pressure type pan-seal fuel cell |
| CN1851273A (en) * | 2006-05-30 | 2006-10-25 | 江苏大学 | Hydraulic system oil tank liquid low-pressure supercharging device |
| CN202251156U (en) * | 2011-09-22 | 2012-05-30 | 中国船舶重工集团公司第七〇五研究所高技术公司 | Hydraulic oil tank compensation system applied to underground logging instrument |
| CN103498820A (en) * | 2013-09-17 | 2014-01-08 | 中国船舶重工集团公司第七一〇研究所 | Closed pressure maintaining oil tank suitable for hydraulic wave power generation device |
| CN204084975U (en) * | 2014-08-04 | 2015-01-07 | Tcl空调器(中山)有限公司 | Varying capacity fluid reservoir and air-conditioning system |
| CN206206297U (en) * | 2016-11-28 | 2017-05-31 | 山河智能装备股份有限公司 | A kind of hydraulic oil container pressure relief device |
-
2016
- 2016-11-28 CN CN201611065079.1A patent/CN106351891A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128328A (en) * | 1995-01-06 | 1996-08-07 | 孙超 | High-power energy storage device |
| CN2644744Y (en) * | 2003-05-08 | 2004-09-29 | 上海隧道工程股份有限公司 | Pressure type pan-seal fuel cell |
| CN1851273A (en) * | 2006-05-30 | 2006-10-25 | 江苏大学 | Hydraulic system oil tank liquid low-pressure supercharging device |
| CN202251156U (en) * | 2011-09-22 | 2012-05-30 | 中国船舶重工集团公司第七〇五研究所高技术公司 | Hydraulic oil tank compensation system applied to underground logging instrument |
| CN103498820A (en) * | 2013-09-17 | 2014-01-08 | 中国船舶重工集团公司第七一〇研究所 | Closed pressure maintaining oil tank suitable for hydraulic wave power generation device |
| CN204084975U (en) * | 2014-08-04 | 2015-01-07 | Tcl空调器(中山)有限公司 | Varying capacity fluid reservoir and air-conditioning system |
| CN206206297U (en) * | 2016-11-28 | 2017-05-31 | 山河智能装备股份有限公司 | A kind of hydraulic oil container pressure relief device |
Non-Patent Citations (1)
| Title |
|---|
| 陈定方: "《现代机械设计师手册 下册》", 30 April 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437537A (en) * | 2018-04-28 | 2018-08-24 | 浙江易锻精密机械有限公司 | A kind of overload jointing mechanism |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170125 |
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| RJ01 | Rejection of invention patent application after publication |