CN206206297U - A kind of hydraulic oil container pressure relief device - Google Patents
A kind of hydraulic oil container pressure relief device Download PDFInfo
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- CN206206297U CN206206297U CN201621285198.3U CN201621285198U CN206206297U CN 206206297 U CN206206297 U CN 206206297U CN 201621285198 U CN201621285198 U CN 201621285198U CN 206206297 U CN206206297 U CN 206206297U
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- hydraulic oil
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- cylindrical body
- oil container
- spring
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Abstract
A kind of hydraulic oil container pressure relief device, including pressure relief device and air filter.Described pressure relief device is by horizontal-extending cylindrical body, first piston, the first spring, second piston, second spring；The air filter is made up of air cleaner, end straight coupling and flexible pipe；Described pressure relief device is assemblied on hydraulic oil tank structure part plus the second sealing ring and screw；Described air filter is assemblied on pressure relief device by holding straight coupling.In hydraulic oil container pressure relief device of the present utility model, first spring is provided with due to the first piston and second piston, second spring is installed between second piston and cylindrical body, the elastic force of the first spring and second spring is less than the power that the generation deformation of hydraulic oil tank structure part is born, therefore, when hydraulic oil passes in and out hydraulic oil tank structure part, produced pressure is preferentially absorbed by spring, it is to avoid hydraulic oil tank structure part bears pressure, so as to fundamentally solve the cracking of hydraulic oil tank structure part.
Description
Technical field：
The utility model is related to technical field of hydraulic pressure, in particular it relates to a kind of hydraulic oil container pressure relief device, more particularly to
For a kind of hydraulic oil container pressure relief device and its application method of crawler hypraulic excavator.
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 is returned rapidly
Time receiving, hydraulic oil-returning can rapidly be filled with hydraulic oil container, cause hydraulic oil container internal cavity volume to diminish, and air pressure drastically increases in fuel tank
Greatly, hydraulic oil tank structure part bears pressure and is increased dramatically；When digger operating device launches, the fluid quilt in hydraulic oil container
Rapidly suction out, cause hydraulic oil container internal cavity volume to increase, air pressure is strongly reduced in fuel tank, and hydraulic oil tank structure part bears pressure
Power is strongly reduced；Because digging machine equipment acts frequently, the structural member internal cavity of hydraulic oil container can be made in stretched and relaxed
State, if things go on like this, the cracking of hydraulic oil tank structure part can be caused, had a strong impact on the use longevity of hydraulic oil tank structure part
Life.
In the 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 interior air pressure of balanced hydraulic fuel tank, plays the effect of pressure release.
Specifically, i.e., a pre-compressed air cleaner is installed at the top of hydraulic oil container, the pre-compressed air cleaner
It is cylindrical shape, in cylinder center's perforate, cylinder outside is equipped with border filter, and extraneous air enters by filter
Enter cylinder center hole, and then enter hydraulic oil container.
Because the working environment of excavator stirs up a cloud of dust, quite badly, used under this operating mode for a long time, air filter
Filter is easily blocked because of dust suction, causes fuel tank pressure release to be failed.
Utility model content：
The utility model solves the deficiencies in the prior art and provides a kind of basic cracking for solving hydraulic oil tank structure part, prolongs
The hydraulic oil container pressure relief device for crawler hypraulic excavator of the service life of hydraulic oil tank structure part long.
The utility model is realized using following technical scheme：
A kind of hydraulic oil container pressure relief device, including the cylindrical body in hydraulic oil container is arranged on, the cylindrical body is empty middle part
The cylinder of the heart, the tail end of the cylindrical body is connected with hydraulic oil container inner wall sealing, and at least two are provided with the middle part of the cylindrical body
Piston, the front opening of the cylindrical body is connected with hydraulic oil container, and the piston is connected with cylindrical body inner wall sealing, adjacent described
Gap is provided between piston to be formed between the first cavity and the adjacent piston by the connection of the first spring, the piston and cylinder
Gap is provided between the end of shape body to form the second cavity and connected by second spring between piston and the end of cylindrical body.
Also include air filter, the air filter includes air cleaner, end straight coupling and flexible pipe, empty
Air filter lower section is connected by flexible pipe and end straight coupling with the second cavity.
Piston includes first piston and second piston, and the first sealing is provided between the 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 first spring and second spring makes a concerted effort to produce the minimum force of deformation less than Oiltank structure part.
The cylindrical body is horizontally arranged at the side wall of hydraulic oil container or is vertically installed at the top of hydraulic oil container.
The cylindrical body is connected by dismountable attachment structure with hydraulic oil container main body.
Due to using said structure, when hydraulic oil passes in and out fuel tank, produced pressure can preferentially by the first spring, second
Spring absorbs, it is to avoid the pressure that hydraulic oil tank structure part bears, so as to fundamentally solve the cracking of hydraulic oil tank structure part
Problem, is respectively provided with the first sealing ring and the second sealing ring between first piston, second piston and cylindrical body, can play two-stage
The effect of dust seal, the cleaning of second piston can be realized by air, be removably to connect between cylindrical body and hydraulic oil container
Binding structure, can facilitate the replacing and cleaning of part in the cylindrical body.
Brief description of the drawings
Fig. 1 pressure relief device structural representations；
Fig. 2 hydraulic oil container high level schematic diagrames；
Fig. 3 hydraulic oil container low liquid level schematic diagrames；
The vertically-mounted structural representation of Fig. 4 pressure relief devices；
Reference：
1, cylindrical body in figure；2nd, first piston；3rd, the first spring；4th, second piston；5th, second spring；6th, screw；7th, hold
Straight coupling；8th, flexible pipe；9th, air cleaner；10th, the first cavity；11st, the second cavity；12nd, the first sealing ring；13rd, second is close
Seal；
Specific embodiment：
For the purpose, technical scheme and advantage for implementing the utility model are clearer, below in conjunction with the utility model
Accompanying drawing in embodiment, is further described in more detail to the technical scheme in the utility model embodiment.In the accompanying drawings, ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.With reference to attached
Figure is described in detail to embodiment of the present utility model.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " are based on accompanying drawing institute
The orientation or position relationship for showing, are for only for ease of description the utility model and simplify description, signified rather than indicating or implying
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
The limitation of novel protected 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 to install first piston 2
End (left end in figure) is referred to as first end, and the relative other end (right-hand member in figure) is referred to as the second end.
First spring 3, second piston 4 and the end of cylindrical body 1 second are installed in the middle of the first piston 2 and second piston 4
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 be moved to the end of cylindrical body 1 second, the first spring 3 of preferential compression.First spring 3 promotes second
Piston 4 to the end of cylindrical body 1 second 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, increased tank pressure is absorbed by the first spring 3, second spring 5, is converted into elastic potential energy
It is 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 be moved to the first end of cylindrical body 1, meanwhile, second spring 5 promotes second piston 4 to be moved to cylindrical body first end
It is dynamic, until the first spring 3, second spring 5 are made a concerted effort and oil liquid pressure balance, piston stop motion, in this spring of process first
3rd, second spring 5 will keep in obtain elastic potential energy release, promote first piston 2, second piston 4 to reset.Due to the first spring 3,
The power for producing deformation less than hydraulic oil tank structure part with joint efforts of second spring 5, when hydraulic oil passes in and out fuel tank, produced pressure
Preferentially can be absorbed by the first spring 3, second spring 5, it is to avoid the pressure that hydraulic oil tank structure part bears, so as to fundamentally solve
The cracking of hydraulic oil tank structure part.
The 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 a part of two-stage dust seal.
In the illustrated embodiment, air filter, the air filter bag are set at the end of the cylindrical body 1 second
Air cleaner 9, end straight coupling 7 and flexible pipe 8 are included, the air cleaner 9 is connected by flexible pipe 8 with end straight coupling 9, institute
State end straight coupling 9 to be fixed on hydraulic oil container outer wall by screw 6, the end straight coupling 9 is connected with the second cavity, second
Air is full of in the second cavity 11 between piston 4 and the end of cylindrical body 1 second, and is communicated with the outside by air cleaner 9；When
When second piston 4 moves right, air is discharged outside hydraulic oil container from cavity 11 by air cleaner 9, conversely, extraneous air
Enter cavity 11 from air cleaner 9, it is ensured that first piston 2 and second piston 4 can left and right smoothly motions.
The hydraulic oil container pressure relief device and previous embodiments of second embodiment (Fig. 4) of the present utility model include pressure release
Device and air filter, the pressure relief device be vertically arranged to hydraulic oil container top, it is advantageous to the cylindrical body 1 with
For example, (threaded connection of such as bolt connection etc, flange connects dismountable attachment structure that is connected by of hydraulic oil container main body
Connect etc., using dismountable attachment structure, the replacing and cleaning of part in the cylindrical body 1 can be facilitated.
Finally it is pointed out that above example is only used to illustrate the technical solution of the utility model, rather than it is limited
System.Although being described in detail to the utility model with reference to the foregoing embodiments, one of ordinary skill in the art should manage
Solution：It can still be modified to the technical scheme described in foregoing embodiments, or which part technical characteristic is entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment of the utility model
The spirit and scope of technical scheme.
Claims (6)
1. a kind of hydraulic oil container pressure relief device, it is characterised in that：Including the cylindrical body being arranged in hydraulic oil container, the cylindrical body
It is the hollow cylinder in middle part, the tail end of the cylindrical body is connected with hydraulic oil container inner wall sealing, is provided with the middle part of the cylindrical body
At least two pistons, the front opening of the cylindrical body is connected with hydraulic oil container, and the piston is connected with cylindrical body inner wall sealing,
Gap is provided between the adjacent piston to be formed by the connection of the first spring between the first cavity and the adjacent piston, it is described
Gap is provided between piston and the end of cylindrical body and forms the second cavity and between piston and the end of cylindrical body by second
Spring is connected.
2. hydraulic oil container pressure relief device according to claim 1, it is characterised in that：Also include air filter, it is described
Air filter includes air cleaner, end straight coupling and flexible pipe, and the air cleaner lower section is straight by flexible pipe and end
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：The piston includes first piston
And second piston, the first sealing ring is installed, between second piston and cylindrical body inwall between the 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：First spring and second spring
Elastic force makes a concerted effort to produce the minimum force of deformation less than Oiltank structure part.
5. hydraulic oil container pressure relief device according to claim 4, it is characterised in that：The cylindrical body is horizontally arranged at hydraulic pressure
The side wall of fuel tank is vertically installed at the top of hydraulic oil container.
6. hydraulic oil container pressure relief device according to claim 5, it is characterised in that：The cylindrical body and hydraulic oil container main body
Be connected by dismountable attachment structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621285198.3U CN206206297U (en) | 2016-11-28 | 2016-11-28 | A kind of hydraulic oil container pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621285198.3U CN206206297U (en) | 2016-11-28 | 2016-11-28 | A kind of hydraulic oil container pressure relief device |
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| Publication Number | Publication Date |
|---|---|
| CN206206297U true CN206206297U (en) | 2017-05-31 |
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ID=58747603
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621285198.3U Active CN206206297U (en) | 2016-11-28 | 2016-11-28 | A kind of hydraulic oil container pressure relief device |
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| CN (1) | CN206206297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351891A (en) * | 2016-11-28 | 2017-01-25 | 山河智能装备股份有限公司 | Pressure relief device for hydraulic oil tank |
-
2016
- 2016-11-28 CN CN201621285198.3U patent/CN206206297U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351891A (en) * | 2016-11-28 | 2017-01-25 | 山河智能装备股份有限公司 | Pressure relief device for hydraulic oil tank |
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