CN108591166A - The hydraulic cylinder of function is kept with load - Google Patents
The hydraulic cylinder of function is kept with load Download PDFInfo
- Publication number
- CN108591166A CN108591166A CN201810497238.8A CN201810497238A CN108591166A CN 108591166 A CN108591166 A CN 108591166A CN 201810497238 A CN201810497238 A CN 201810497238A CN 108591166 A CN108591166 A CN 108591166A
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- China
- Prior art keywords
- channel
- passage
- cylinder
- hydraulic cylinder
- load
- 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.)
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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
- 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
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- 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
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention provides a kind of hydraulic cylinder that there is load to keep function, it include the oil cylinder ontology with rodless cavity and rod chamber, the oil cylinder ontology includes cylinder barrel, piston rod and the cylinder seat affixed with cylinder barrel, first passage and second channel are equipped in the cylinder seat, one end of the first passage is communicated with rodless cavity, one end of the second channel is communicated with rod chamber, and check valve is equipped in the first passage or/and second channel.Due to being equipped with check valve in first passage or/and second channel in the present invention, the check valve can effectively prevent the pressure oil in rodless cavity to be flowed out through first passage, or the pressure oil in rod chamber is effectively prevent to be flowed out through second channel, to effectively prevent piston rod to continue to elongate or shorten after extending to setting state, so that piston rod keeps current state, i.e. this hydraulic cylinder to have the function of that load is kept under the action of without other pressure oils.
Description
Technical field
The present invention relates to a kind of hydraulic cylinders, more particularly to a kind of hydraulic cylinder that there is load to keep function.
Background technology
Large-scale application is required for design one to current hydraulic oil cylinder in machinery industry, in many cases, designer
Kind has the valve group that load keeps function, is used cooperatively with hydraulic cylinder to realize the load holding function of hydraulic cylinder.The valve
Group has following two kinds of installation forms when being used cooperatively with hydraulic cylinder：1, valve group and hydraulic cylinder gun iron link use bolt handle
Valve group is fixed in the corresponding mounting base of oil cylinder or valve group is fixed on oil cylinder with the steel pipe of connection oil cylinder port；2, valve group with
Hydraulic cylinder is attached with hose.
Using gun iron link when, due to there are the aging of sealing element, bite into pieces the problems such as, the joint surface of valve group and oil cylinder is deposited
In leakage point, and this kind of structure in the case of many narrow spaces and is not suitable for, and maintenance difficulty is big.It is narrow for above-mentioned space
Small situation, designer can be used hose and connect the two.The application of hose brings other risks again, as hose is old
Change, breakage etc., in the case of a high temperature aging speed accelerate, while load variation range it is big when be also easy to produce impact, this will easily make
At booster, and cause accident.
Invention content
In view of the foregoing deficiencies of prior art, the technical problem to be solved in the present invention is to provide a kind of structure more
Compact has the hydraulic cylinder that load keeps function.
To achieve the above object, the present invention provides a kind of hydraulic cylinder that there is load to keep function, including has no bar
The oil cylinder ontology of chamber and rod chamber, the oil cylinder ontology include cylinder barrel, piston rod and the cylinder seat affixed with cylinder barrel, the cylinder seat
In be equipped with first passage and second channel, one end of the first passage communicates with rodless cavity, one end of the second channel and
Rod chamber communicates, and check valve is equipped in the first passage or/and second channel.
Further, there is third channel, the both ends of third channel are respectively with the between the first passage and second channel
One channel is connected to second channel, and is equipped with plunger in the third channel.
Further, the other end of the first passage is equipped with the first on-off valve.
Further, the other end of the second channel is equipped with the second on-off valve.
Further, the first damper is equipped in the first passage, first damper is for limiting first passage
The flow of middle pressure oil.
Further, the second damper is equipped in the second channel, second damper is for limiting second channel
The flow of middle pressure oil.
Further, one end of the second channel is communicated by steel pipe with rod chamber.
As described above, the hydraulic cylinder of the present invention that there is load to keep function, has the advantages that：
The operation principle of hydraulic cylinder that in the present invention there is load to keep function is：Pressure oil is logical through first in cylinder seat
Road enters rodless cavity, to push piston rod to extend；Pressure oil enters rod chamber through the second channel in cylinder seat, to push work
Stopper rod bounces back；Due to being equipped with check valve in first passage or/and second channel in the present invention, which can effectively prevent nothing
Pressure oil in rod cavity is flowed out through first passage, or the pressure oil in rod chamber is effectively prevent to be flowed out through second channel, to have
Effect prevents piston rod from continuing to elongate or shorten after extending to setting state so that piston rod is under the action of without other pressure oils
Current state is kept, so that this hydraulic cylinder can continue to bear current load, i.e. there is this hydraulic cylinder load to keep
Function.Meanwhile above-mentioned first passage, second channel and check valve are respectively positioned in cylinder seat in the present invention so that there is load to protect for this
The hydraulic cylinder of function is held, overall structure is compacter, and overall volume is smaller.
Description of the drawings
Fig. 1 is the structural schematic diagram of the hydraulic cylinder in the present invention with load holding function.
Fig. 2 is the structural schematic diagram of the hydraulic cylinder in the first embodiment of the invention with load holding function.
Fig. 3 is the structural schematic diagram of the hydraulic cylinder in second of embodiment of the invention with load holding function.
Fig. 4 is the structural schematic diagram of cylinder seat in second of embodiment of the invention.
Component label instructions
1 cylinder barrel, 35 plunger
11 rodless cavity, 36 first on-off valve
12 rod chamber, 37 second on-off valve
13 hydraulic fluid port, 38 first damper
2 piston rod, 39 second damper
3 cylinder seat, 30 fabrication hole
31 first passage, 4 cylinder head
32 second channel, 5 guide sleeve
33 check valve, 6 piston
34 third channel, 7 oil sealing
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size etc. depicted in this specification attached drawing, only coordinating specification revealed
Content is not limited to the enforceable qualifications of the present invention, therefore does not have so that those skilled in the art understands and reads
Technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing institute's energy of the present invention
Under the effect of generation and the purpose that can reach, the range that can cover in disclosed technology contents should all be still fallen
It is interior.Meanwhile cited such as "upper", "lower", "left", "right", " centre " and " one " term in this specification, it is merely convenient to
Narration is illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, and skill is being changed without essence
It is held in art, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 4, the present invention provides a kind of hydraulic cylinder that there is load to keep function, including has no bar
The oil cylinder ontology of chamber 11 and rod chamber 12, oil cylinder ontology include cylinder barrel 1, piston rod 2 and the cylinder seat 3 affixed with cylinder barrel 1, cylinder seat 3
In be equipped with first passage 31 and second channel 32, one end of first passage 31 communicates with rodless cavity 11, one end of second channel 32
It is communicated with rod chamber 12, check valve 33 is installed in first passage 31 or/and second channel 32.In the present invention there is load to keep
The operation principle of the hydraulic cylinder of function is：Pressure oil enters rodless cavity 11 through the first passage 31 in cylinder seat 3, to push work
Stopper rod 2 extends；Pressure oil enters rod chamber 12 through the second channel 32 in cylinder seat 3, to push piston rod 2 to bounce back；Due to this
Check valve 33 is installed in first passage 31 or/and second channel 32 in invention, which can effectively prevent rodless cavity 11
In pressure oil flowed out through first passage 31, or pressure oil in rod chamber 12 is effectively prevent to be flowed out through second channel 32, to
It effectively prevent piston rod 2 to continue to elongate or shorten after extending to setting state so that work of the piston rod 2 in no external pressure oil
With lower holding current state, so that this hydraulic cylinder can continue to bear current load, i.e. this hydraulic cylinder has load
Keep function.Meanwhile above-mentioned first passage 31, second channel 32 and check valve 33 are respectively positioned in cylinder seat 3 in the present invention so that this
The hydraulic cylinder of function is kept with load, overall structure is compacter, and overall volume is smaller.
Above-mentioned hydraulic cylinder is a kind of hydraulic cylinder keeping function from bringing onto load in the present invention, it is by adjusting its cylinder seat
3 internal structures keep function to realize that its is loaded；Relative to current method, reduces potential leakage point, simplify system
Oil circuit eliminates the valve group to connect with outside hydraulic cylinder, keeps its more environmentally-friendly, safe, compact.
The first embodiment
As shown in Fig. 2, being equipped with check valve 33 in above-mentioned first passage 31.The check valve 33 will effectively prevent rodless cavity 11
In pressure oil through first passage 31 flow out, to effectively prevent piston rod 2 bounce back so that piston rod 2 is maintained at current and stretches
Long status, and keep the bearing capacity to present load.
Meanwhile there is in the present embodiment between first passage 31 and second channel 32 third channel 34, the two of third channel 34
End is connected to first passage 31 and second channel 32 respectively, and plunger 35 is equipped in third channel 34.When having pressure oil through
When the other end in one channel 31 flows into first passage 31, pressure oil flows into rodless cavity by through the check valve 33 in first passage 31
In 11, to push the elongation of piston rod 2 to setting state.Second channel is flowed into when there is the other end of the pressure oil through second channel 32
When 32, partial pressure oil will be flowed into through second channel 32 in third channel 34, and push plunger 35 in third channel 34 to the
One channel, 31 direction is moved, until plunger 35 and the spool of check valve 33 in first passage 31 lean, and the spool is pushed to move
To open state, i.e. plunger 35 opens check valve 33 so that first passage 31 is in opening state, in this way, into second
After another part pressure oil in channel 32 enters rod chamber 12, the pressure oil in rodless cavity 11 will be made smoothly to be flowed through first passage 31
Go out, and piston rod 2 is smoothly bounced back.And when piston rod 2 is elongated to setting state, and bear towards 2 side of retraction of piston rod
To loading force in the state of, if being continued to flow into first passage 31 and second channel 32 without other pressure oils, first passage 31
In check valve 33 pressure oil effectivelying prevent in rodless cavity 11 is flowed out through first passage 31, to effectively prevent piston rod 2
Retraction, and piston rod 2 is made to be maintained at current elongation state, and keep the ability to bear to load.
As shown in Fig. 2, the other end of first passage 31 is equipped with the first on-off valve 36 in the present embodiment, with using this first
On-off valve 36 when needed, opens or closes the other end of first passage 31, and then ensures that pressure oil can be when needed through first
On-off valve 36 flows into first passage 31, and flows into rodless cavity 11 through the check valve 33 in first passage 31.First in the present embodiment
On-off valve 36 is manual on-off valve.Meanwhile the first damper 38, the first damper 38 are equipped in the present embodiment in first passage 31
Flow for limiting pressure oil in first passage 31 avoids piston rod to play the speed that control piston rod 2 stretches out speed
2 shake in telescopic process.In the present embodiment the first damper 38 can be directly drilled out in cylinder seat 3 with it is first logical
The damping plug that the elongated hole that road 31 communicates is embedded in first passage 31 or the thin-wall hole communicated with first passage 31.
One end of second channel 32 is communicated by steel pipe with rod chamber 12 in the present embodiment.The steel pipe and cylinder seat 3 and cylinder barrel 1
Between can be used welding form or using threaded form carry out it is affixed.
The other end of above-mentioned first passage 31 and the other end of second channel 32 are connected to corresponding fluid pressure line respectively.Phase
The fluid pressure line answered can into first passage 31 and second channel 32, supply pressure be oily respectively when needed.
Second of embodiment
As shown in Figure 3 and Figure 4, the present embodiment is also pacified on the basis of the first above-mentioned embodiment in second channel 32
Equipped with check valve 33.Meanwhile the other end of second channel 32 is equipped with the second on-off valve 37 in the present embodiment, with using this second
On-off valve 37 when needed, opens or closes second channel 32, and then ensures that pressure oil can be when needed through the second on-off valve 37
Second channel 32 is flowed into, and is flowed into rod chamber 12 through the check valve 33 in second channel 32.Second on-off valve in the present embodiment
37 be manual on-off valve.And the second damper 39 is equipped in the present embodiment in second channel 32, the second damper 39 is for limiting
The flow of pressure oil in second channel 32 avoids piston rod 2 flexible to play the speed of control 2 retraction speed of piston rod
It shakes in the process.In the present embodiment the second damper 39 can be directly drilled out in cylinder seat 3 with 32 phase of second channel
The damping plug that logical elongated hole is embedded in second channel 32 or the thin-wall hole communicated with second channel 32.
As shown in Figure 3 and Figure 4, there is load to keep the hydraulic cylinder of function when in use, when there is pressure in the present embodiment
The other end of the oil through first passage 31 and through the first on-off valve 36 flow into first passage 31 when, partial pressure oil will lead to through first
Road 31 flows into third channel 34, and plunger 35 is pushed to be moved to second channel 32, and plunger 35 pushes check valve in second channel 32
33 spool is moved to open state, meanwhile, another part pressure oil will be through unidirectional in first passage 31 in first passage 31
Valve 33 and the first damper 38 flow into rodless cavity 11, and the pressure oil in rod chamber 12 will lead to through second channel 32 and second
The second damper 39, check valve 33, the outflow of the second on-off valve 37 in road 32, to enable piston rod 2 smoothly to extend to setting
State.When having the other end of the pressure oil through second channel 32 and flowing into second channel 32 through the second on-off valve 37, partial pressure
Oil will be flowed into through second channel 32 in third channel 34, and the plunger 35 in third channel 34 is pushed to be moved to 31 direction of first passage
It is dynamic, until plunger 35 and the spool of check valve 33 in first passage 31 lean, and the spool is pushed to move on to open state, together
When, another part pressure oil has bar through the check valve 33 and the second damper 39 in second channel 32, inflow in second channel 32
In chamber 12, and the pressure oil in rodless cavity 11 will through the first damper 38 in first passage 31 and first passage 31, check valve 33,
First on-off valve 36 flows out, to enable piston rod 2 smoothly to bounce back to setting state.And when piston rod 2 is elongated to setting state,
And in the state of bearing loading force, if being continued to flow into first passage 31 and second channel 32 without other pressure oils, first passage
Check valve 33 in 31 flows out the pressure oil effectivelying prevent in rodless cavity 11 through first passage 31, and the list in second channel 32
The pressure oil effectivelying prevent in rod chamber 12 is flowed out through second channel 32 to valve 33, to effectively prevent piston rod 2 bounce back or
Elongation, and piston rod 2 is made to be maintained at current elongation state, and keep the ability to bear to load.
Check valve 33 can be for flush type check valve or screw thread inserting type check valve with installation form division in the present embodiment.
38 and second damper 39 of above-mentioned first damper can be arranged according to actual condition.Damping hole size in above-mentioned damping plug can
Sets itself as needed.
In addition, in maintenance, 36 and second on-off valve 37 of above-mentioned first on-off valve need to be turned off manually, to cut off oil circuit, prevent
It, can be according to actual condition flexible configuration only because maloperation causes the accident.
As shown in figure 4, multiple fabrication holes 30 are additionally provided in the present embodiment in cylinder seat 3, under normal operating condition, need by
Each fabrication hole 30 is blocked.
As shown in Figure 1, one end of piston rod 2 is equipped with cylinder head 4 in the present embodiment.And guide sleeve 5 is connected on cylinder barrel 1,
There is oil sealing 7 on guide sleeve 5.The side wall of cylinder barrel 1 is equipped with the hydraulic fluid port 13 that is communicated with rod chamber 12, which passes through steel pipe and the
The one end in two channels 32 is connected to.Piston 6 is connected on piston rod 2.
The third embodiment
The present embodiment does not install check valve 33 on the basis of above-mentioned second of embodiment in first passage 31, and only
Check valve 33 is installed in two channels 32.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (7)
1. a kind of hydraulic cylinder that there is load to keep function, includes the oil cylinder sheet with rodless cavity (11) and rod chamber (12)
Body, the oil cylinder ontology include cylinder barrel (1), piston rod (2) and the cylinder seat (3) affixed with cylinder barrel (1), it is characterised in that：It is described
First passage (31) and second channel (32), one end and rodless cavity (11) phase of the first passage (31) are equipped in cylinder seat (3)
Logical, one end of the second channel (32) is communicated with rod chamber (12), in the first passage (31) or/and second channel (32)
Check valve (33) is installed.
2. having the hydraulic cylinder that load keeps function according to claim 1, it is characterised in that：The first passage (31)
Have third channel (34), the both ends of third channel (34) logical with first passage (31) and second respectively between second channel (32)
Road (32) is connected to, and plunger (35) is equipped in the third channel (34).
3. having the hydraulic cylinder that load keeps function according to claim 1, it is characterised in that：The first passage (31)
The other end the first on-off valve (36) is installed.
4. having the hydraulic cylinder that load keeps function according to claim 1, it is characterised in that：The second channel (32)
The other end the second on-off valve (37) is installed.
5. having the hydraulic cylinder that load keeps function according to claim 1, it is characterised in that：The first passage (31)
In be equipped with the first damper (38), first damper (38) is used to limit the flow of pressure oil in first passage (31).
6. having the hydraulic cylinder that load keeps function according to claim 1, it is characterised in that：The second channel (32)
In be equipped with the second damper (39), second damper (39) is used to limit the flow of pressure oil in second channel (32).
7. having the hydraulic cylinder that load keeps function according to claim 1, it is characterised in that：The second channel (32)
One end communicated with rod chamber (12) by steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497238.8A CN108591166A (en) | 2018-05-22 | 2018-05-22 | The hydraulic cylinder of function is kept with load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497238.8A CN108591166A (en) | 2018-05-22 | 2018-05-22 | The hydraulic cylinder of function is kept with load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591166A true CN108591166A (en) | 2018-09-28 |
Family
ID=63632756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810497238.8A Pending CN108591166A (en) | 2018-05-22 | 2018-05-22 | The hydraulic cylinder of function is kept with load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591166A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202381448U (en) * | 2011-11-14 | 2012-08-15 | 徐州重型机械有限公司 | Hydraulic oil cylinder and hydraulic system |
| CN202851488U (en) * | 2012-11-07 | 2013-04-03 | 常德中联重科液压有限公司 | Bi-direction hydraulic lock and landing leg control system and construction vehicle |
| CN105041769A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Fast-extending and slow-contracting hydraulic cylinder |
| CN106402084A (en) * | 2016-10-30 | 2017-02-15 | 马鞍山市裕华机械制造有限公司 | Double-acting hydraulic cylinder with travel-adjustable buffer plunger |
-
2018
- 2018-05-22 CN CN201810497238.8A patent/CN108591166A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202381448U (en) * | 2011-11-14 | 2012-08-15 | 徐州重型机械有限公司 | Hydraulic oil cylinder and hydraulic system |
| CN202851488U (en) * | 2012-11-07 | 2013-04-03 | 常德中联重科液压有限公司 | Bi-direction hydraulic lock and landing leg control system and construction vehicle |
| CN105041769A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Fast-extending and slow-contracting hydraulic cylinder |
| CN106402084A (en) * | 2016-10-30 | 2017-02-15 | 马鞍山市裕华机械制造有限公司 | Double-acting hydraulic cylinder with travel-adjustable buffer plunger |
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| PB01 | Publication | ||
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Application publication date: 20180928 |
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| RJ01 | Rejection of invention patent application after publication |