CN208669919U - The double gas chamber piston accumulators of hydro pneumatic suspension - Google Patents
The double gas chamber piston accumulators of hydro pneumatic suspension Download PDFInfo
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- CN208669919U CN208669919U CN201821370772.4U CN201821370772U CN208669919U CN 208669919 U CN208669919 U CN 208669919U CN 201821370772 U CN201821370772 U CN 201821370772U CN 208669919 U CN208669919 U CN 208669919U
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- cylinder body
- pneumatic suspension
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- hydro pneumatic
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Abstract
The utility model proposes a kind of double gas chamber piston accumulators of hydro pneumatic suspension, belong to hydro pneumatic suspension technical field.This hydro pneumatic suspension includes upper cylinder body and lower cylinder body with double gas chamber piston accumulators, the interior cross-sectional area of upper cylinder body and the interior cross-sectional area of lower cylinder body are unequal, the lower end of upper cylinder body is tightly connected with the upper end of lower cylinder body is connected to upper cylinder body and lower cylinder body, upper floating piston is set in upper cylinder body, lower floating piston is set in lower cylinder body, limited block is set in upper cylinder body or lower cylinder body between upper floating piston and lower floating piston, the middle position of limited block opens up oilhole up and down, oil nozzle is connected in upper cylinder body or lower cylinder body between upper floating piston and lower floating piston, upper cylinder body connects upper air injection opening through air flue, lower cylinder body connects lower air injection opening through air flue.The utility model has the beneficial effects that effective work area of 2 air chambers is different, damping thrust is different, it is ensured that the buffer shock-absorbing that hydro pneumatic suspension provides meets vehicle in unloaded, fully loaded requirement simultaneously.
Description
Technical field
The utility model relates to hydro pneumatic suspension technical fields, store more particularly to a kind of double gas chamber piston types of hydro pneumatic suspension
It can device.
Background technique
Hydro pneumatic suspension can change rigidity, can carry out preferable buffer shock-absorbing to vehicle, be widely used to heavy type
Truck, engineering truck.Current hydro pneumatic suspension is generally made of oil cylinder and single gas chamber accumulator, and principle is stored by single gas chamber
Can the atmospheric pressure of device air cavity adjust rigidity.Current single gas chamber accumulator cannot be guaranteed the buffer shock-absorbing that oil cylinder provides while expire
Sufficient vehicle is in unloaded, fully loaded requirement.Specifically, the atmospheric pressure when adjustment list gas chamber accumulator air cavity meets vehicle deadhead operation
When, then the piston rod of oil cylinder is located at the upper end of oil cylinder under vehicle full load condition, and the cushion stroke very little of piston rod makes oil cylinder
Buffer shock-absorbing effect is poor；It is fully loaded with when driving when the atmospheric pressure of adjustment list gas chamber accumulator air cavity meets vehicle, then in vehicle sky
The piston rod of oil cylinder is located at the lower end of oil cylinder under load state, and the cushion stroke of piston rod also very little makees the buffer shock-absorbing of oil cylinder
With poor；When the atmospheric pressure of adjustment accumulator air cavity is median, then the cushion stroke of piston rod is bigger than normal in oil cylinder, but makes vehicle
Chassis height change greatly, do not meet Car design requirement.
Utility model content
The purpose of this utility model is to provide a kind of double gas chamber piston accumulators of hydro pneumatic suspension, solve current storage
Can device cannot be guaranteed that buffer shock-absorbing that hydro pneumatic suspension provides meets vehicle the requirement that is unloaded, being fully loaded with the technical issues of simultaneously.
The utility model provides a kind of hydro pneumatic suspension double gas chamber piston accumulators, the double gas chamber piston types of hydro pneumatic suspension
Accumulator includes upper cylinder body and lower cylinder body, and the interior cross-sectional area of upper cylinder body and the interior cross-sectional area of lower cylinder body are unequal, upper cylinder body
The upper end of lower end and lower cylinder body be tightly connected and be connected to upper cylinder body and lower cylinder body, being provided in upper cylinder body can be along the axis of upper cylinder body
Line makees the upper floating piston of straight reciprocating motion, and being provided in lower cylinder body can make under straight reciprocating motion along the axis of lower cylinder body
Floating piston is provided with limited block in upper cylinder body or lower cylinder body between upper floating piston and lower floating piston, in limited block
Between position offer oilhole up and down, be connected between upper floating piston and lower floating piston in upper cylinder body or lower cylinder body
Oil nozzle, upper cylinder body are connected with upper air injection opening through air flue, and lower cylinder body is connected with lower air injection opening through air flue.
Further, the interior cross-sectional area of upper cylinder body is less than the interior cross-sectional area of lower cylinder body, and the lower end outer wall of upper cylinder body is set
It is equipped with external screw thread, the upper end inner wall of lower cylinder body is provided with internal screw thread, the upper end of the lower thread connection lower cylinder body of upper cylinder body.
Further, the outer wall of the limited block is provided with external screw thread, and the lower end inner wall of upper cylinder body is provided with internal screw thread, limit
Position block is threadedly coupled the lower end of upper cylinder body.
Further, the lower end of limited block is aligned with the lower end of upper cylinder body.
Further, lower cylinder body connects oil nozzle.
Further, upper air injection opening is arranged in the upper end of upper cylinder body, and lower air injection opening is arranged in the lower end of lower cylinder body.
Further, epithelium healing is set inside the upper end of upper cylinder body, one end of epithelium healing connects upper cylinder body, epithelium healing it is another
One end connects upper air injection opening；Lower cylinder body includes lower cylinder sleeve, and the lower end of lower cylinder sleeve is sealedly connected with lower cover, setting inside lower cover
Downtake, one end of downtake connect lower cylinder body, and the other end of downtake connects lower air injection opening.
Further, the lower end inner wall of lower cylinder sleeve is provided with internal screw thread, and the outer wall of lower cover is provided with external screw thread, lower cover
It is threadedly coupled the lower end of lower cylinder sleeve.
Further, sealing ring is provided between the lower end inner wall of lower cylinder sleeve and the outer wall of lower cover.
Further, the oil nozzle is connected with pipeline road.
Compared with prior art, the hydro pneumatic suspension of the utility model had the characteristics that with double gas chamber piston accumulators and
Advantage:
The double gas chamber piston accumulators of the hydro pneumatic suspension of the utility model, compact-sized, occupied space is smaller, convenient for dress
Assigned on vehicle；It is double gas chamber designs, and effective work area of 2 air chambers is different, and damping thrust is different, at hydro pneumatic suspension
It is unloaded in vehicle or full load condition keeps the change in location of piston rod in oil cylinder little, piston rod in-oil cylinder cushion stroke compared with
Greatly, it is ensured that the buffer shock-absorbing that hydro pneumatic suspension provides meets vehicle in unloaded, fully loaded requirement simultaneously；It can be to existing vehicle
Oleo-pneumatic suspension transformation, it is only necessary to which double gas chamber piston accumulators of the utility model are replaced to single gas chamber accumulation of energy on existing vehicle
Device, improvement cost is lower, promotes the use of convenient for a wide range of.
After specific embodiment of the present utility model is read in conjunction with the figure, it will become more the characteristics of the utility model with advantage
Add clear.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the structural schematic diagram of the double gas chamber piston accumulators of hydro pneumatic suspension and oil cylinder in original state；
Fig. 2 is the structural schematic diagram of the double gas chamber piston accumulators of hydro pneumatic suspension and oil cylinder in vehicle light condition；
Fig. 3 is the structural schematic diagram of the double gas chamber piston accumulators of hydro pneumatic suspension and oil cylinder in vehicle full load condition；
Wherein, 1, upper cylinder body, 11, upper floating piston, 12, upper air injection opening, 2, lower cylinder body, 21, lower floating piston, 22, under
Air injection opening, 23, lower cylinder sleeve, 24, lower cover, 3, limited block, 31, oilhole, 4, pipeline road, 5, oil cylinder, 51, grease chamber, 52, piston
Bar, 6, oil nozzle, 71, epithelium healing, 72, downtake, 8, sealing ring, 91, upper chamber, 92, lower chamber.
Specific embodiment
As shown in Figure 1 to Figure 3, the present embodiment provides a kind of hydro pneumatic suspension double gas chamber piston accumulators, double gas chambers
Piston type accumulation of energy connects the grease chamber 51 of oil cylinder 5 through pipeline road 4, to collectively constitute the major part of hydro pneumatic suspension.
Hydro pneumatic suspension includes upper cylinder body 1 and lower cylinder body 2 with double gas chamber piston accumulators.The interior cross-sectional area of upper cylinder body 1
It is unequal with the interior cross-sectional area of lower cylinder body 2.In the present embodiment, the interior cross-sectional area of upper cylinder body 1 is less than the interior transversal of lower cylinder body 2
Area.The interior cross-sectional area of upper cylinder body 1 and the interior cross-sectional area of lower cylinder body 2 are unequal, can make 1 gas chamber of upper cylinder body, lower cylinder body 2
Effective work area of gas chamber is different, different with the damping thrust to upper floating piston 11, lower floating piston 21.
The lower end outer wall of upper cylinder body 1 is provided with external screw thread, and the upper end inner wall of lower cylinder body 2 is provided with internal screw thread, upper cylinder body 1
Lower thread connects the upper end of lower cylinder body 2, and the lower end of upper cylinder body 1 and the upper end of lower cylinder body 2 are tightly connected, and makes upper cylinder body 1 under
Cylinder body 2 is communicated as one.
Floating piston 11 is provided in upper cylinder body 1, upper floating piston 11 can be in upper cylinder body 1 along the axis of upper cylinder body 1
Make straight reciprocating motion, the interior top in upper floating piston 11 of upper cylinder body 1 forms upper chamber 91.It is provided with and floats downward in lower cylinder body 2
Piston 21, lower floating piston 21 can make straight reciprocating motion along the axis of lower cylinder body 2 in lower cylinder body 2, and lower cylinder body 2 is interior under
The lower section of floating piston 21 forms lower chamber 92.Upper cylinder body is provided with circle between upper floating piston 11 and lower floating piston 21
Cylindricality limited block 3.The outer wall of limited block 3 is provided with external screw thread, and the lower end inner wall of upper cylinder body 1 is provided with internal screw thread, 3 spiral shell of limited block
The lower end of line connection upper cylinder body 1.The lower end of limited block 3 is aligned with the lower end of upper cylinder body 1, run floating piston 11 can to limit
The upper surface of position block 3, run lower floating piston 21 can to the lower surface of limited block 3, to increase in limited structure space
The stroke of upper floating piston 11, lower floating piston 21.The middle position of limited block 3 offers oilhole 31 up and down, this reality
It applies in example, hydraulic oil enters the space of lower 21 top of floating piston in lower cylinder body 2 through oil nozzle 6, and can enter upper cylinder half through oilhole 31
The space of upper 11 lower section of floating piston in body 1.
Oil nozzle 6 is connected in lower cylinder body 2 between upper floating piston 11 and lower floating piston 21.Oil nozzle 6 is through pipeline road 4
Connect the grease chamber 51 of oil cylinder 5.
Upper air injection opening 12 is arranged in the upper end of upper cylinder body 1, and epithelium healing 71 is arranged inside the upper end of upper cylinder body 1, epithelium healing 71
One end connects upper cylinder body 1, and the other end of epithelium healing 71 connects upper air injection opening 12.
Lower air injection opening 22 is arranged in the lower end of lower cylinder body 2, and lower air injection opening 22 connects lower cylinder body 2 through downtake 72.Under specifically,
Cylinder body 2 includes lower cylinder sleeve 23 and lower cover 24, and the lower end inner wall of lower cylinder sleeve 23 is provided with internal screw thread, the outer wall setting of lower cover 24
Have an external screw thread, lower cover 24 is threadedly coupled the lower end of lower cylinder sleeve 23, the outer wall of the lower end inner wall of lower cylinder sleeve 23 and lower cover 24 it
Between be provided with sealing ring 8 so that lower cylinder sleeve 23 lower end be tightly connected lower cover 24.Downtake 72 is set inside lower cover 24,
One end of downtake 72 connects lower cylinder body 2, and the other end of downtake 72 connects lower air injection opening 22.
As shown in Figure 1, hydro pneumatic suspension is in original state (oil-filled, inflated condition), the grease chamber 51 of oil cylinder 5 injects hydraulic
The oil nozzle 6 of double gas chamber piston accumulators is connected the grease chamber 51 of oil cylinder 5 by oil through pipeline road 4.Upwards by upper air injection opening 12
Injection nitrogen and the upper air injection opening 12 of closing, inject nitrogen to lower cylinder body 2 by lower air injection opening 22 and close lower air injection opening in cylinder body 1
22.In the present embodiment, the nitrogen pressure injected in upper cylinder body 1, lower cylinder body 2 is equal, effective work of upper chamber 91, lower chamber 92
Area is different, and upper chamber 91, which is less than lower chamber 92 to the damping thrust of upper floating piston 11, pushes away the damping of lower floating piston 21
Power.
As shown in Fig. 2, hydro pneumatic suspension is in vehicle light condition, the stress in reciprocating motion of piston rod 52 is smaller at this time,
The hydraulic oil of grease chamber 51 enters the space between upper floating piston 11 and lower floating piston 21 through oil nozzle 6.91 pairs of upper chamber floatings
The damping thrust of piston 11 is smaller, and hydraulic oil pushes upper floating piston 11 to move, at this point, piston rod 52 is located in oil cylinder 5
Between position slightly on the lower side, cushion stroke of the piston rod 52 in oil cylinder 5 is larger, meets vehicle in unloaded buffer shock-absorbing requirement.
As shown in figure 3, hydro pneumatic suspension is in vehicle full load condition, the stress in reciprocating motion of piston rod 52 is larger at this time,
The hydraulic oil of grease chamber 51 enters the space between upper floating piston 11 and lower floating piston 21 through oil nozzle 6.91 pairs of upper chamber floatings
The damping thrust of piston 11 is smaller, and lower chamber 91 is larger to the damping thrust of lower floating piston 21, and hydraulic oil first pushes floating
The movement of piston 11 then pushes lower floating piston 21 to move, at this point, piston rod 52 is located at the slightly elevated position in centre of oil cylinder 5,
Cushion stroke of the piston rod 52 in oil cylinder 5 is larger, meets vehicle in fully loaded buffer shock-absorbing requirement.
The double gas chamber piston accumulators of the hydro pneumatic suspension of the present embodiment, compact-sized, occupied space is smaller, convenient for assembly
In on vehicle.It is double gas chamber (upper chamber 91, lower chamber 92) designs, and effective work area of 2 air chambers is different, and damping pushes away
Power is different, and hydro pneumatic suspension, which is in vehicle zero load or full load condition, keeps the change in location of piston rod 52 in oil cylinder 5 little, piston rod 52
Cushion stroke in oil cylinder 5 is larger, it is ensured that the buffer shock-absorbing that hydro pneumatic suspension provides meets vehicle unloaded, full simultaneously
The requirement of load.The oleo-pneumatic suspension of existing vehicle can be transformed, it is only necessary to replace double gas chamber piston accumulators of embodiment existing
There is single gas chamber accumulator on vehicle, improvement cost is lower, promotes the use of convenient for a wide range of.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the protection scope of the utility model.
Claims (9)
1. a kind of double gas chamber piston accumulators of hydro pneumatic suspension, it is characterised in that: the double gas chamber piston type accumulation of energys of hydro pneumatic suspension
Device includes upper cylinder body and lower cylinder body, and the interior cross-sectional area of upper cylinder body and the interior cross-sectional area of lower cylinder body are unequal, under upper cylinder body
Holding to be tightly connected with the upper end of lower cylinder body is connected to upper cylinder body and lower cylinder body, and being provided in upper cylinder body can make along the axis of upper cylinder body
The upper floating piston of straight reciprocating motion is provided with the lower floating that can make straight reciprocating motion along the axis of lower cylinder body in lower cylinder body
Piston is provided with limited block, the interposition of limited block in upper cylinder body or lower cylinder body between upper floating piston and lower floating piston
The oilhole offered up and down is set, is connected with oil in upper cylinder body or lower cylinder body between upper floating piston and lower floating piston
Mouth, upper cylinder body are connected with upper air injection opening through air flue, and lower cylinder body is connected with lower air injection opening through air flue.
2. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 1, it is characterised in that: the interior cross of upper cylinder body
Sectional area is less than the interior cross-sectional area of lower cylinder body, and the lower end outer wall of upper cylinder body is provided with external screw thread, and the upper end inner wall of lower cylinder body is set
It is equipped with internal screw thread, the upper end of the lower thread connection lower cylinder body of upper cylinder body.
3. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 2, it is characterised in that: the limited block
Outer wall is provided with external screw thread, and the lower end inner wall of upper cylinder body is provided with internal screw thread, and limited block is threadedly coupled the lower end of upper cylinder body.
4. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 3, it is characterised in that: the lower end of limited block
It is aligned with the lower end of upper cylinder body.
5. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 1, it is characterised in that: lower cylinder body connection oil
Mouth.
6. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 1, it is characterised in that: the upper end of upper cylinder body
Lower air injection opening is arranged in air injection opening in setting, the lower end of lower cylinder body.
7. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 6, it is characterised in that: the upper end of upper cylinder body
Inside setting epithelium healing, one end of epithelium healing connect upper cylinder body, and the other end of epithelium healing connects upper air injection opening；Under lower cylinder body includes
Cylinder sleeve, the lower end of lower cylinder sleeve are sealedly connected with lower cover, and downtake is arranged inside lower cover, and one end of downtake connects lower cylinder
Body, the other end of downtake connect lower air injection opening.
8. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 7, it is characterised in that: the lower end of lower cylinder sleeve
Inner wall is provided with internal screw thread, and the outer wall of lower cover is provided with external screw thread, and lower cover is threadedly coupled the lower end of lower cylinder sleeve.
9. the double gas chamber piston accumulators of hydro pneumatic suspension according to claim 8, it is characterised in that: the lower end of lower cylinder sleeve
Sealing ring is provided between inner wall and the outer wall of lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821370772.4U CN208669919U (en) | 2018-08-24 | 2018-08-24 | The double gas chamber piston accumulators of hydro pneumatic suspension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821370772.4U CN208669919U (en) | 2018-08-24 | 2018-08-24 | The double gas chamber piston accumulators of hydro pneumatic suspension |
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| CN208669919U true CN208669919U (en) | 2019-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757806A (en) * | 2018-08-24 | 2018-11-06 | 山东万通液压股份有限公司 | The double gas chamber piston accumulators of hydro pneumatic suspension |
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2018
- 2018-08-24 CN CN201821370772.4U patent/CN208669919U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757806A (en) * | 2018-08-24 | 2018-11-06 | 山东万通液压股份有限公司 | The double gas chamber piston accumulators of hydro pneumatic suspension |
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