CN108046137A - High pressure protector, oil gas cylinder component, crane and high voltage protective method - Google Patents
High pressure protector, oil gas cylinder component, crane and high voltage protective method Download PDFInfo
- Publication number
- CN108046137A CN108046137A CN201711326047.7A CN201711326047A CN108046137A CN 108046137 A CN108046137 A CN 108046137A CN 201711326047 A CN201711326047 A CN 201711326047A CN 108046137 A CN108046137 A CN 108046137A
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- China
- Prior art keywords
- oil gas
- check valve
- gas cylinder
- cylinder
- cylinder barrel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
A kind of high pressure protector provided by the invention, oil gas cylinder component, crane and high voltage protective method, are related to anti-hypsokinesis oil gas cylinder technical field, including overflow valve, accumulator and the first check valve；The first end of overflow valve is connected with accumulator, and the second end of overflow valve is used to connect with the cylinder barrel cavity of oil gas cylinder；The first end of first check valve is connected with accumulator, and the second end of the first check valve is used to connect with the cylinder barrel cavity of oil gas cylinder, wherein, the first check valve only allows fluid to be flowed from its first end to second end.In the above-mentioned technical solutions, employ cylinder barrel cavity of the overflow valve connection in oil gas cylinder, when temperature is excessive to the in vivo pressure influence of cylinder barrel chamber, after default pressure value, overflow valve will be opened, it imported into the in vivo fluid of cylinder barrel chamber is suitable in accumulator, temporarily to reduce the in vivo pressure of cylinder barrel chamber, and then solves the problems, such as that pressure is excessive and breakage easily is caused to structure.
Description
Technical field
The present invention relates to anti-hypsokinesis oil gas cylinder technical field, more particularly, to a kind of high pressure protector, oil gas cylinder component,
Crane and high voltage protective method.
Background technology
At present, crane tower arm uses frequent in super-tonnage crane, and the use of the anti-hypsokinesis oil gas cylinder of tower arm, meeting
Allow tower auxiliary suddenly unloaded during or overall structure center of gravity cause layback when, after crane
Incline and play the role of support, ensure that the stationarity that crane uses.It follows that entirety of the anti-hypsokinesis oil gas cylinder in crane
Play the role of in structure vital.
But with the use of anti-hypsokinesis oil gas cylinder, gradually find that existing anti-hypsokinesis oil gas cylinder is present with oil gas cylinder knot
Structure is unstable, the phenomenon that damaged occurs, and effective supporting role to crane thus can not be normally played, also by direct shadow
It rings to crane use reliability.
The content of the invention
It is an object of the invention to provide a kind of high pressure protector, oil gas cylinder component, crane and high voltage protective method,
It is present with oil gas cylinder structural instability to solve anti-hypsokinesis oil gas cylinder in the prior art, breakage occurs, and then can not be just
Normal plays the technical issues of effectively being supported to crane.
In order to solve the above-mentioned technical problem, so existing be studied in detail existing anti-hypsokinesis oil gas cylinder.
Include cylinder barrel cavity and cylinder rod cavity in the structure of existing anti-hypsokinesis oil gas cylinder, wherein, it is filled in cylinder barrel cavity
Enter fluid, and gas can be filled in cylinder rod cavity, separated between cylinder barrel cavity and cylinder rod cavity by piston, use when
It waits, can ensure that the pressure of fluid and gas is equal.
When oil gas cylinder is in most long locating distance, the in vivo pressure of cylinder barrel chamber is minimum, and once anti-hypsokinesis oil gas cylinder is pressurized
When, the locating distance of whole oil gas cylinder can shorten, and the in vivo pressure of cylinder barrel chamber will increase therewith at this time, and in order to protect
The stable structure of the entire anti-hypsokinesis oil gas cylinder of card not there is a situation where breakage, will set the in vivo pressure of cylinder barrel chamber in design
The pressure that power can not be more than the structural member of installation oil gas cylinder or the permitted maximum thrust conversion of system forms, and the pressure
And the pressure of the limitation of crane program and protection, once it will alarm or even cause broken in structure more than the pressure system
It is bad, it is Theoretical Design when designing anti-hypsokinesis oil gas cylinder above so as to cause accident.
But with the use of anti-hypsokinesis oil gas cylinder during, gradually find in anti-hypsokinesis oil gas cylinder real work simultaneously
It can not carry out work according to Theoretical Design described above, because during the use of anti-hypsokinesis oil gas cylinder, gradually find cylinder
Pressure in tube inner chamber can be influenced by temperature and change, and variation is very big caused by influence, under normal circumstances, after preventing
Incline oil gas cylinder inner cavity of cylinder in the event of high temperatures, the pressure of inner cavity of cylinder may increase because of the rise of temperature 50% with
On, it like this, will be easily more than the installation structural member of oil gas cylinder described above or the permitted maximum of system
The pressure that thrust conversion forms, and then will easily structure be damaged or program is caused to be alarmed.
After knowing the reason for anti-hypsokinesis oil gas cylinder is triggered oil gas cylinder structural instability occur and breakage occurs, first carry
Go out following technical solution to solve above-mentioned technical problem.
A kind of high pressure protector provided by the invention, including overflow valve, accumulator and the first check valve；
The first end of the overflow valve is connected with the accumulator, and the second end of the overflow valve is for the cylinder with oil gas cylinder
Barrel chamber body connects；
The first end of first check valve is connected with the accumulator, and the second end of first check valve is used for and oil
The cylinder barrel cavity connection of cylinder, wherein, first check valve only allows fluid to be flowed from its first end to second end.
In the above-mentioned technical solutions, since temperature can influence the in vivo pressure initiation of the cylinder barrel chamber of anti-hypsokinesis oil gas cylinder,
Make anti-hypsokinesis oil gas cylinder that can not normally work according to Theoretical Design, so in vivo to cylinder barrel chamber in order to eliminate temperature
Pressure initiation influences, and cylinder barrel cavity of the overflow valve connection in oil gas cylinder is employed, when temperature is to the in vivo pressure influence of cylinder barrel chamber
Excessive, after default pressure value, overflow valve will be opened, and imported into accumulator by the in vivo fluid of cylinder barrel chamber is suitable
It is interior, temporarily to reduce the in vivo pressure of cylinder barrel chamber；And as the locating distance of anti-hypsokinesis oil gas cylinder is elongated, the in vivo pressure of cylinder barrel chamber
Also can reduce, being stored in the fluid of the accumulator at this time can also be back to by the first check valve in cylinder barrel cavity, to oil
Liquid is supplemented, and increases the in vivo pressure of cylinder barrel chamber.
Further, in an embodiment of the present invention, the high pressure protector further includes the first pipeline；
The second end of the overflow valve and first pipeline connection, first pipeline is for the cylinder barrel chamber with oil gas cylinder
Body connects；
The second end of first check valve and first pipeline connection.
Further, in an embodiment of the present invention, the high pressure protector further includes the second pipeline；
The first end of the overflow valve is connected by second pipeline with the accumulator；
The first end of first check valve and second pipeline connection.
Further, in an embodiment of the present invention, the high pressure protector further includes the second check valve；
The first end of second check valve is used to connect oil supply source, the second end of second check valve and described first
The first end connection of check valve, wherein, second check valve only allows fluid to be flowed from its first end to second end.
Present invention also provides a kind of oil gas cylinder component, including oil gas cylinder and the high pressure protector；
The second end of the overflow valve is connected with the cylinder barrel cavity of the oil gas cylinder；The second end of first check valve with
The cylinder barrel cavity connection of the oil gas cylinder.
In the above-mentioned technical solutions, since temperature can influence the in vivo pressure initiation of the cylinder barrel chamber of anti-hypsokinesis oil gas cylinder,
Make anti-hypsokinesis oil gas cylinder that can not normally work according to Theoretical Design, so in vivo to cylinder barrel chamber in order to eliminate temperature
Pressure initiation influences, and cylinder barrel cavity of the overflow valve connection in oil gas cylinder is employed, when temperature is to the in vivo pressure influence of cylinder barrel chamber
Excessive, after default pressure value, overflow valve will be opened, and imported into accumulator by the in vivo fluid of cylinder barrel chamber is suitable
It is interior, temporarily to reduce the in vivo pressure of cylinder barrel chamber；And as the locating distance of anti-hypsokinesis oil gas cylinder is elongated, the in vivo pressure of cylinder barrel chamber
Also can reduce, being stored in the fluid of the accumulator at this time can also be back to by the first check valve in cylinder barrel cavity, to oil
Liquid is supplemented, and increases the in vivo pressure of cylinder barrel chamber.
Further, in an embodiment of the present invention, the oil gas cylinder component further includes the second check valve；
The first end of second check valve is used to connect oil supply source, the second end of second check valve and described first
The first end connection of check valve, wherein, second check valve only allows fluid to be flowed from its first end to second end.
Further, in an embodiment of the present invention, the oil gas cylinder component further includes the second check valve；
The first end of second check valve is used to connect oil supply source, second end and the oil gas of second check valve
The cylinder barrel cavity connection of cylinder, wherein, second check valve only allows fluid to be flowed from its first end to second end.
Further, in an embodiment of the present invention, the oil gas cylinder component further includes oil supply source；
The first end of second check valve is connected with the oil supply source.
Present invention also provides a kind of crane, including the oil gas cylinder component.
In the above-mentioned technical solutions, since the crane employs the oil gas cylinder component, the oil gas cylinder group is utilized
Part mesohigh protective device can exclude influence of the temperature to pressure in the cylinder barrel cavity of oil gas cylinder to a certain extent, and then ensure
It can normally stretch, and avoid the problem that occurring to cause structural failure due to pressure is excessive.
Present invention also provides a kind of high voltage protective methods for oil gas cylinder, based on the high pressure protector, work as oil
When the in vivo actual pressure of cylinder barrel chamber of cylinder reaches default safe pressure value, overflow valve is opened, fluid overflow to accumulator；
When the in vivo actual pressure of cylinder barrel chamber of oil gas cylinder is less than default safe pressure value, accumulator release fluid, and
By the first check valve to the cylinder barrel cavity delivering oil of oil gas cylinder.
In the above-mentioned technical solutions, since temperature can influence the in vivo pressure initiation of the cylinder barrel chamber of anti-hypsokinesis oil gas cylinder,
Make anti-hypsokinesis oil gas cylinder that can not normally work according to Theoretical Design, so in vivo to cylinder barrel chamber in order to eliminate temperature
Pressure initiation influences, and employs overflow valve connection in cylinder barrel cavity, when temperature is excessive to the in vivo pressure influence of cylinder barrel chamber, is more than
After default pressure value, overflow valve will be opened, and by the suitable export of the in vivo fluid of cylinder barrel chamber, can thus reduce cylinder
The in vivo pressure of barrel chamber, prevents pressure is excessive from causing structural damage.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the first structure schematic diagram of high pressure protector provided by one embodiment of the present invention；
Fig. 2 is the second structure diagram of high pressure protector provided by one embodiment of the present invention；
Fig. 3 is the 3rd structure diagram of high pressure protector provided by one embodiment of the present invention；
Fig. 4 is the 4th structure diagram of high pressure protector provided by one embodiment of the present invention；
Fig. 5 is the 5th structure diagram of high pressure protector provided by one embodiment of the present invention；
Fig. 6 is the structure diagram of oil gas cylinder component provided by one embodiment of the present invention；
Fig. 7 is the structure diagram for the oil gas cylinder component that another embodiment of the present invention provides；
Fig. 8 is the structure diagram for the oil gas cylinder component that another embodiment of the invention provides.
Reference numeral：
1- overflow valves；2- accumulators；The first check valves of 3-；
The second check valves of 4-；5- oil gas cylinders；The 3rd check valves of 6-；
The first pipelines of 11-；The second pipelines of 12-；
51- cylinder barrel cavitys；52- cylinder rod cavitys；53- pistons.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Fig. 1 is the first structure schematic diagram of high pressure protector provided by one embodiment of the present invention；First, such as Fig. 1 institutes
Show, a kind of high pressure protector provided in this embodiment, including overflow valve 1,2 and first check valve 3 of accumulator；It is overflow using described
Stream valve 1,2 and first check valve 3 of accumulator can be configured to exclude the structure that temperature influences.
With reference to figure 1, the first end of the overflow valve 1 is connected with the accumulator 2, and the second end of the overflow valve 1 is used for
It is connected with the cylinder barrel cavity 51 of oil gas cylinder 5.Wherein, the overflow valve 1 can be preset a safe pressure, when oil gas cylinder 5
Cylinder barrel cavity 51 in actual pressure be more than the safe pressure when, the overflow valve 1 can automatically open.
Based on said structure, when the fluid in cylinder barrel cavity 51 of the temperature to oil gas cylinder 5 is affected, make oil gas cylinder 5
When actual pressure in cylinder barrel cavity 51 is more than 1 institute's preset safe pressure of overflow valve, the overflow valve 1 will be automatic
It opens, original fluid in the cylinder barrel cavity 51 of oil gas cylinder 5 is overflowed, makes the reality in the cylinder barrel cavity 51 of oil gas cylinder 5
Border pressure temporarily becomes smaller, and just the actual pressure in the cylinder barrel cavity 51 of oil gas cylinder 5 can be made to be maintained within safe pressure with this.
With continued reference to Fig. 1, since the first end of first check valve 3 is connected with the accumulator 2, described first is unidirectional
The second end of valve 3 for being connected with the cylinder barrel cavity 51 of oil gas cylinder 5, wherein, 3, first check valve allow fluid from its
It is flowed to second end one end.
At this point, the fluid overflowed from the cylinder barrel cavity 51 of oil gas cylinder 5 will be temporarily stored in accumulator 2,
Because when with the locating distance of anti-hypsokinesis oil gas cylinder 5 it is elongated, the pressure in cylinder barrel cavity 51 can also reduce, at this moment, due to accumulation of energy
The first check valve 3 is connected between device 2 and the cylinder barrel cavity 51 of oil gas cylinder 5, so can just make to be previously stored in the accumulation of energy
The fluid of device 2 is back to by the first check valve 3 in cylinder barrel cavity 51, and fluid is supplemented, and is increased in cylinder barrel cavity 51
Pressure, to ensure that actual pressure is in normal range (NR) in the cylinder barrel cavity 51 of oil gas cylinder 5, is ensureing anti-hypsokinesis oil gas cylinder 5 just
Often work.
So said structure can be realized as completing certainly when the actual pressure in the cylinder barrel cavity 51 of oil gas cylinder 5 is excessively high
Dynamic overflow, so as to reduce the actual pressure in the cylinder barrel cavity 51 of oil gas cylinder 5；And when the reality in the cylinder barrel cavity 51 of oil gas cylinder 5
When border pressure is low, and oil spill can be automatically back to the cylinder barrel cavity 51 of oil gas cylinder 5, realize without outside energy and from
The effect of dynamic overflow oil return.
Fig. 2 is the second structure diagram of high pressure protector provided by one embodiment of the present invention.As shown in Fig. 2,
In the embodiment of the present invention, the high pressure protector further includes the first pipeline 11；It can be to institute using first pipeline 11
It states the second end of the first check valve 3 and the second end of the overflow valve 1 is integrated, make the second end of the first check valve 3 with overflowing
The second end of stream valve 1 is connected by one outlet with the cylinder barrel cavity 51 of oil gas cylinder 5.
With reference to figure 2, specifically, the second end of the overflow valve 1 is connected with first pipeline 11, first pipeline 11
It is connected for the cylinder barrel cavity 51 with oil gas cylinder 5；Meanwhile the second end of first check valve 3 connects with first pipeline 11
It is logical.
Like this, the structure of the high pressure protector can be made easier, when the anti-hypsokinesis oil for being connected to cooperation
During cylinder 5, assembling is more convenient.
Fig. 3 is the 3rd structure diagram of high pressure protector provided by one embodiment of the present invention；Fig. 4 is the present invention one
4th structure diagram of the high pressure protector that a embodiment provides.
Such as Fig. 3 or Fig. 4, in an embodiment of the present invention, the high pressure protector further includes the second pipeline 12；Using institute
The second pipeline 12 is stated, the first end and 3 first end of the first check valve of the overflow valve 1 can also be integrated, makes the first list
The first end of first end and overflow valve 1 to valve 3 is connected by one outlet with accumulator 2.
With reference to figure 3 or Fig. 4, specifically, the first end of the overflow valve 1 passes through second pipeline 12 and the accumulator
2 connections；Meanwhile the first end of first check valve 3 is connected with second pipeline 12.
Like this, the structure of the high pressure protector can be made easier, assemble it is more convenient, meanwhile,
Due to only opening one outlet on accumulator 2, making step can be also reduced.
Fig. 5 is the 5th structure diagram of high pressure protector provided by one embodiment of the present invention.As shown in figure 5,
In the embodiment of the present invention, the high pressure protector further includes the second check valve 4；Second check valve 4 is integrated in institute
After stating on high pressure protector, the original oil-filled passage of oil gas cylinder 5 can be made to be integrated on the high pressure protector.
It like this, also need not be again individually in oil gas even if after the high pressure protector is added on oil gas cylinder 5
The cylinder barrel cavity 51 of cylinder 5 is separately set into hole, and oil-filled work to the cylinder barrel cavity 51 of oil gas cylinder 5 can be completed by entering hole using one
Make and prevent temperature from causing oil to the pressure influence in the cylinder barrel cavity 51 of oil gas cylinder 5 using the high pressure protector
The problem of actual pressure in the cylinder barrel cavity 51 of cylinder 5 is excessive occurs.
With reference to figure 5, specifically, the first end of second check valve 4 is used to connect oil supply source, second check valve 4
Second end be connected with the first end of first check valve 3, wherein, 4, second check valve allow fluid from its first
It holds to second end and flows.
Fig. 6 is the structure diagram of oil gas cylinder component provided by one embodiment of the present invention.
As shown in fig. 6, present invention also provides a kind of oil gas cylinder component, including oil gas cylinder 5 and the high pressure protector；
Influence of the temperature to pressure in the cylinder barrel cavity 51 of oil gas cylinder 5 can be excluded using the high pressure protector, is in turn resulted in
The problem of structural failure, occurs.
Wherein, with reference to figure 6, the second end of the overflow valve 1 is connected with the cylinder barrel cavity 51 of the oil gas cylinder 5；Described
The second end of one check valve 3 is connected with the cylinder barrel cavity 51 of the oil gas cylinder 5.
Furthermore it is also possible to learn, the oil gas cylinder 5 is to include the portions such as cylinder barrel cavity 51, cylinder rod cavity 52 and piston 53
Point, also, the 3rd check valve 6 for being inflated into the cylinder rod cavity 52 is also communicated on the cylinder rod cavity 52.
Oil gas cylinder 5 in normal work, oil gas cylinder 5 most long locating distance state (namely entire oil gas cylinder 5 be stretched to it is most long
In the state of) gas is filled with into the cylinder rod cavity 52 according to default pressure P1 by the 3rd check valve 6 (nitrogen may be employed
Gas), while fluid is filled with into the cylinder barrel cavity 51 according to default pressure P1, the structure of oil gas cylinder 5 can so become
During change namely during elongation and shortening, the piston 53 can be slidably arranged in cylinder barrel cavity 51 and cylinder rod chamber
Between body 52, the steady operation of oil gas cylinder 5 is kept.
Meanwhile after adding the high pressure protector, it is also necessary to which gas is filled with into accumulator 2 to be made also to have inside it
There is the initial pressure of P1.
Based on above-mentioned preparation, when completing to inflate and work normally, after oil gas cylinder 5 is compressed in its cylinder barrel cavity 51
Actual pressure P can be gradually increasing (also including temperature certainly influences it actual pressure P is caused to rise), when actual pressure P is more than
1 default safe pressure P2 (wherein, P2 of overflow valve>When P1), the fluid overflow in cylinder barrel cavity 51 makes storage to accumulator 2
The actual pressure P3 rises of energy device 2 (P3 is more than P1 at this time).
Wherein, the safe pressure can ensure that structure will not be damaged, and can be set according to actual conditions.
And when the cylinder rod of oil gas cylinder 5 stretches out, since the fluid in cylinder barrel cavity 51 is due to by part overflow to storage
Can increase in device 2, therefore with the elongation of cylinder rod, the actual pressure P in cylinder barrel cavity 51 can taper into P1 with
Under, and the actual pressure P3 in accumulator 2 is greater than actual pressure P in cylinder barrel cavity 51 at this time, therefore in pressure differential
It acts on, the fluid in accumulator 2 is just flowed back to by the first check valve 3 in cylinder barrel cavity 51, realizes automatic reflowing result.
In conclusion since temperature can influence the pressure initiation in the cylinder barrel cavity 51 of anti-hypsokinesis oil gas cylinder 5, make after preventing
The oil gas cylinder 5 that inclines can not normally work according to Theoretical Design, so in order to eliminate temperature to the pressure in cylinder barrel cavity 51
Power, which is formed, to be influenced, and is employed overflow valve 1 and is connected cylinder barrel cavity 51 in oil gas cylinder 5, when temperature is to the pressure in cylinder barrel cavity 51
Influence excessive, after default pressure value, overflow valve 1 will be opened, by the suitable importing of fluid in cylinder barrel cavity 51
Into accumulator 2, temporarily to reduce the pressure in cylinder barrel cavity 51；And as the locating distance of anti-hypsokinesis oil gas cylinder 5 is elongated, cylinder barrel
Pressure in cavity 51 can also reduce, and be stored in the fluid of the accumulator 2 at this time and can also be back to by the first check valve 3
In cylinder barrel cavity 51, fluid is supplemented, increases the pressure in cylinder barrel cavity 51.
Furthermore it is also possible to reference to the record above for the high pressure protector, just repeat no more herein.
Fig. 7 is the structure diagram for the oil gas cylinder component that another embodiment of the present invention provides.
As shown in fig. 7, in an embodiment of the present invention, the oil gas cylinder component further includes the second check valve 4；By described
After two check valves 4 are integrated on the high pressure protector, the original oil-filled passage of oil gas cylinder 5 can be made to be integrated in the height
It presses in protective device.
It like this, also need not be again individually in oil gas even if after the high pressure protector is added on oil gas cylinder 5
The cylinder barrel cavity 51 of cylinder 5 is separately set into hole, and oil-filled work to the cylinder barrel cavity 51 of oil gas cylinder 5 can be completed by entering hole using one
Make and prevent temperature from causing oil to the pressure influence in the cylinder barrel cavity 51 of oil gas cylinder 5 using the high pressure protector
The problem of actual pressure in the cylinder barrel cavity 51 of cylinder 5 is excessive occurs.
With reference to figure 7, specifically, the first end of second check valve 4 is used to connect oil supply source, second check valve 4
Second end be connected with the first end of first check valve 3, wherein, 4, second check valve allow fluid from its first
It holds to second end and flows.
Fig. 8 is the structure diagram for the oil gas cylinder component that another embodiment of the invention provides.
As shown in figure 8, in an embodiment of the present invention, the oil gas cylinder component further includes the second check valve 4；Using second
When check valve 4 comes oil-filled in the cylinder barrel cavity 51 to oil gas cylinder 5, also can individually it be carried out with the high pressure protector, this
Sample can make accumulator 2 into the reflux fluid in the cylinder barrel cavity 51 of oil gas cylinder 5 with entering oil gas cylinder by the second check valve 4
Fluid in 5 cylinder barrel cavity 51 is mutually separated out, convenient for controlling the filling of two-way fluid.
With reference to figure 8, specifically, the first end of second check valve 4 is used to connect oil supply source, second check valve 4
Second end connected with the cylinder barrel cavity 51 of the oil gas cylinder 5, wherein, 4, second check valve allow fluid from its first
It holds to second end and flows.
In conclusion the connection mode of the second check valve of above two 4, can complete the cylinder barrel cavity 51 to oil gas cylinder 5
Oil-filled work, can be used according to actual conditions.
Further, in an embodiment of the present invention, the oil gas cylinder component further includes oil supply source；
The first end of second check valve 4 is connected with the oil supply source, unidirectional by second using the fluid of oil supply source
Valve 4 is filled into the cylinder barrel cavity 51 of oil gas cylinder 5.
Present invention also provides a kind of crane, including the oil gas cylinder component.
In conclusion since the crane employs the oil gas cylinder component, the oil gas cylinder component mesohigh is utilized
Protective device can exclude influence of the temperature to pressure in the cylinder barrel cavity 51 of oil gas cylinder 5 to a certain extent, and then ensure its energy
It is enough normal flexible, it avoids the problem that occurring to cause structural failure due to pressure is excessive.
Furthermore it is also possible to reference to the record above for the high pressure protector, just repeat no more herein.
Present invention also provides a kind of high voltage protective methods for oil gas cylinder 5, based on the high pressure protector, work as oil
When actual pressure in the cylinder barrel cavity 51 of cylinder 5 reaches default safe pressure value, overflow valve 1 is opened, fluid overflow to accumulation of energy
Device 2；
When the actual pressure in the cylinder barrel cavity 51 of oil gas cylinder 5 is less than default safe pressure value, accumulator 2 discharges oil
Liquid, and pass through cylinder barrel cavity 51 delivering oil of first check valve 3 to oil gas cylinder 5.
Oil gas cylinder 5 in normal work, oil gas cylinder 5 most long locating distance state (namely entire oil gas cylinder 5 be stretched to it is most long
In the state of) according to default pressure P1 gas (nitrogen may be employed) is filled with into the cylinder rod cavity 52, while according to pre-
If pressure P1 fluid is filled with into the cylinder barrel cavity 51, and during oil gas cylinder 5 is extended and shortened, cylinder barrel cavity
51 and cylinder rod cavity 52 in actual pressure P be always to be consistent.
After the high pressure protector is employed, it is also necessary to which gas is filled with into accumulator 2 to be made also to have inside it
The initial pressure of P1.
Based on above-mentioned preparation, when completing to inflate and work normally, after oil gas cylinder 5 is compressed in its cylinder barrel cavity 51
Actual pressure P can be gradually increasing (also including temperature certainly influences it actual pressure P is caused to rise), when actual pressure P is more than
1 default safe pressure P2 (wherein, P2 of overflow valve>When P1), the fluid overflow in cylinder barrel cavity 51 makes storage to accumulator 2
The actual pressure P3 rises of energy device 2 (P3 is more than P1 at this time).
And when the cylinder rod of oil gas cylinder 5 stretches out, since the fluid in cylinder barrel cavity 51 is due to by part overflow to storage
Can increase in device 2, therefore with the elongation of cylinder rod, the actual pressure P in cylinder barrel cavity 51 can taper into P1 with
Under, and the actual pressure P3 in accumulator 2 is greater than actual pressure P in cylinder barrel cavity 51 at this time, therefore in pressure differential
It acts on, the fluid in accumulator 2 is just flowed back to by the first check valve 3 in cylinder barrel cavity 51, realizes automatic reflowing result.
Furthermore it is also possible to reference to the record above for the oil gas cylinder component, just repeat no more herein.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of high pressure protector, which is characterized in that including overflow valve (1), accumulator (2) and the first check valve (3)；
The first end of the overflow valve (1) is connected with the accumulator (2), and the second end of the overflow valve (1) is used for and oil gas
Cylinder barrel cavity (51) connection of cylinder (5)；
The first end of first check valve (3) is connected with the accumulator (2), and the second end of first check valve (3) is used
Connected in the cylinder barrel cavity (51) with oil gas cylinder (5), wherein, first check valve (3) only allow fluid from its first end to
Second end flows.
2. high pressure protector according to claim 1, which is characterized in that further include the first pipeline (11)；
The second end of the overflow valve (1) is connected with first pipeline (11), and first pipeline (11) is used for and oil gas cylinder
(5) cylinder barrel cavity (51) connection；
The second end of first check valve (3) is connected with first pipeline (11).
3. high pressure protector according to claim 1 or 2, which is characterized in that further include the second pipeline (12)；
The first end of the overflow valve (1) is connected by second pipeline (12) with the accumulator (2)；
The first end of first check valve (3) is connected with second pipeline (12).
4. high pressure protector according to claim 1, which is characterized in that further include the second check valve (4)；
The first end of second check valve (4) is for connecting oil supply source, the second end of second check valve (4) and described the
The first end connection of one check valve (3), wherein, second check valve (4) only allows fluid from its first end to second end stream
It is dynamic.
5. a kind of oil gas cylinder component, which is characterized in that including oil gas cylinder (5) and the height as any one of claim 1-3
Press protective device；
The second end of the overflow valve (1) is connected with the cylinder barrel cavity (51) of the oil gas cylinder (5)；First check valve (3)
Second end connected with the cylinder barrel cavity (51) of the oil gas cylinder (5).
6. oil gas cylinder component according to claim 5, which is characterized in that further include the second check valve (4)；
The first end of second check valve (4) is for connecting oil supply source, the second end of second check valve (4) and described the
The first end connection of one check valve (3), wherein, second check valve (4) only allows fluid from its first end to second end stream
It is dynamic.
7. oil gas cylinder component according to claim 5, which is characterized in that further include the second check valve (4)；
The first end of second check valve (4) is used to connect oil supply source, second end and the oil of second check valve (4)
Cylinder barrel cavity (51) connection of cylinder (5), wherein, second check valve (4) only allows fluid from its first end to second end
Flowing.
8. the oil gas cylinder component according to claim 6 or 7, which is characterized in that further include oil supply source；
The first end of second check valve (4) is connected with the oil supply source.
9. a kind of crane, which is characterized in that including the oil gas cylinder component as any one of claim 5-8.
10. a kind of high voltage protective method for oil gas cylinder, based on the high voltage protective dress as any one of claim 1-4
It puts, which is characterized in that when the actual pressure in the cylinder barrel cavity (51) of oil gas cylinder (5) reaches default safe pressure value, overflow
Valve (1) is opened, fluid overflow to accumulator (2)；
When the actual pressure in the cylinder barrel cavity (51) of oil gas cylinder (5) is less than default safe pressure value, accumulator (2) release oil
Liquid, and pass through cylinder barrel cavity (51) delivering oil of the first check valve (3) to oil gas cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711326047.7A CN108046137A (en) | 2017-12-13 | 2017-12-13 | High pressure protector, oil gas cylinder component, crane and high voltage protective method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711326047.7A CN108046137A (en) | 2017-12-13 | 2017-12-13 | High pressure protector, oil gas cylinder component, crane and high voltage protective method |
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| Publication Number | Publication Date |
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| CN108046137A true CN108046137A (en) | 2018-05-18 |
Family
ID=62132040
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711326047.7A Pending CN108046137A (en) | 2017-12-13 | 2017-12-13 | High pressure protector, oil gas cylinder component, crane and high voltage protective method |
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| CN (1) | CN108046137A (en) |
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| DE2544189A1 (en) * | 1975-10-03 | 1977-04-14 | Krupp Gmbh | Mobile crane hydraulic jack control system - has pump pressure pipe connected to accumulator by parallel pipes with valves |
| CN201325841Y (en) * | 2008-12-19 | 2009-10-14 | 上海三一科技有限公司 | High-low pressure switching hydraulic system for preventing back tilting of caterpillar crane jib |
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| CN103452091A (en) * | 2012-06-05 | 2013-12-18 | 北汽福田汽车股份有限公司 | Dynamic compaction machine damping system and dynamic compaction machine with same |
| CN104828721A (en) * | 2015-05-05 | 2015-08-12 | 中国水产科学研究院渔业机械仪器研究所 | Self-balancing compensation system, marine crane and control method thereof |
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2017
- 2017-12-13 CN CN201711326047.7A patent/CN108046137A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2544189A1 (en) * | 1975-10-03 | 1977-04-14 | Krupp Gmbh | Mobile crane hydraulic jack control system - has pump pressure pipe connected to accumulator by parallel pipes with valves |
| CN201325841Y (en) * | 2008-12-19 | 2009-10-14 | 上海三一科技有限公司 | High-low pressure switching hydraulic system for preventing back tilting of caterpillar crane jib |
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| CN202785413U (en) * | 2012-08-24 | 2013-03-13 | 徐工集团工程机械股份有限公司 | Anti-tilting hydraulic system for arm support of crane |
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