CN206129976U - Pneumatic gravity compensating system and air supporting zero friction cylinder structure thereof - Google Patents
Pneumatic gravity compensating system and air supporting zero friction cylinder structure thereof Download PDFInfo
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- CN206129976U CN206129976U CN201621124219.3U CN201621124219U CN206129976U CN 206129976 U CN206129976 U CN 206129976U CN 201621124219 U CN201621124219 U CN 201621124219U CN 206129976 U CN206129976 U CN 206129976U
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- piston
- cylinder
- orifice
- throttle orifice
- cylinder structure
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Abstract
The utility model discloses a pneumatic gravity compensating system and air supporting zero friction cylinder structure thereof, its include cylinder, suit in piston in the cylinder and set up in the load support piece of piston outer end, wherein, the cylinder with the coaxial setting of piston, just the internal perisporium of cylinder with the radial clearance who has preset length between the periphery wall of piston, the air feed hole that communicates with the air supply is seted up to the bottom of cylinder, an at least cribbing discharge orifice has been seted up on the piston, among the same row each the orifice is followed the circumference evenly distributed of piston, is the aperture scope of orifice 0.7mm 0.74mm every row of orifice quantity that includes is 8 12 it is individual. Like this, this cylinder structural design the orifice of preset holes footpath scope and quantity to can make the radial bearing capacity of leakage flow rate and piston satisfy the operating mode demand through setting up of orifice, improve its performance, guarantee pneumatic gravity compensating system's stability.
Description
Technical field
This utility model is related to zero gravity auxiliaries technical field, and in particular to a kind of for pneumatic gravity compensation
The air supporting friction-free air cylinder structure of system.This utility model further relates to a kind of including the pneumatic of above-mentioned air supporting friction-free air cylinder structure
Gravity compensation system.
Background technology
To ensure the high reliability and precision of the systems such as space station, aircraft, must utilize on the ground before in-orbit flight
Zero gravity system carries out dynamic test to its each subsystem；At present, the implementation of zero gravity system is predominantly passive or main
Two kinds of the suspension of dynamic control.Pneumatic gravity compensation system as a kind of special zero gravity system, because it has rigidity
It is low, the advantages of stroke is long, in low frequency kinetic test extensive utilization has been obtained.As the core of pneumatic gravity compensation system
The air supporting friction-free air cylinder of one of part, its performance directly affects the stability of system pressure control, therefore it provides a kind of new
Air supporting friction-free air cylinder structure, to by the design of leakage flow size and piston radial bearing capacity, improving it makes
With performance, it is ensured that the stability of pneumatic gravity compensation system.
Utility model content
The purpose of this utility model is to provide a kind of new air supporting friction-free air cylinder structure, to big by leakage flow
Little and piston radial bearing capacity design, improves its performance, it is ensured that the stability of pneumatic gravity compensation system.This reality
A kind of pneumatic gravity compensation system including the air supporting friction-free air cylinder structure is to provide with new another object.
To achieve these goals, this utility model provides a kind of air supporting friction-free air cylinder structure, including cylinder barrel, is set in
Piston in the cylinder barrel, and it is arranged at the load supports of the piston outer end；
The cylinder barrel is arranged with the piston coaxial, and is had between the periphery wall of the internal perisporium of the cylinder barrel and the piston
There is the radial clearance of preset length；The bottom of the cylinder barrel offers the air vent connected with source of the gas；
An at least cribbing discharge orifice, circumference of each described throttle orifice in same row along the piston are offered on the piston
It is uniformly distributed, the pore diameter range of the throttle orifice is 0.7mm-0.74mm, the throttling hole number that often arranging includes is 8-12.
Further, two cribbing discharge orifices are offered on the piston, the throttling number of perforations and aperture in two rows is equal, and
Two cribbing discharge orifices are arranged correspondingly in the axial direction of the piston.
Axial distance between a row further, in throttle orifice described in two rows and the outer face of the piston is the work
The a quarter of plug height；Another row in throttle orifice described in two rows and the axial distance between the inner face of the piston are described
The a quarter of depth pistion.
Further, the aperture of the throttle orifice is 0.72mm.
Further, the throttling hole number that often arranging includes is 10.
Further, the preset length of the radial clearance is 0.043mm.
This utility model also provides a kind of pneumatic gravity compensation system, including cylinder and be connected with the cylinder-driven it is negative
Carry, the cylinder is air supporting friction-free air cylinder structure as above.
Air supporting friction-free air cylinder structure provided by the utility model includes cylinder barrel, the piston being set in the cylinder barrel,
With the load supports for being arranged at the piston outer end；Wherein, the cylinder barrel is arranged with the piston coaxial, and the cylinder barrel
Radial clearance with preset length between the periphery wall of internal perisporium and the piston；The bottom of the cylinder barrel offers and source of the gas
The air vent of connection；An at least cribbing discharge orifice is offered on the piston, each described throttle orifice in same row is along the piston
Circumference be uniformly distributed, the pore diameter range of the throttle orifice is 0.7mm-0.74mm, and the throttling hole number that often arranging includes is 8-12
It is individual.So, the air cylinder structure devises the throttle orifice of default pore diameter range and quantity such that it is able to made by the setting of throttle orifice
Obtain leakage flow and piston radial bearing capacity meets duty requirements, improve its performance, it is ensured that pneumatic gravity is compensated
The stability of system.
Description of the drawings
In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described.In all of the figs, it is similar
Element or part are typically identified by similar reference.In accompanying drawing, each element or part might not be according to actual ratios
Draw.
Fig. 1 is a kind of structural representation of specific embodiment of air supporting friction-free air cylinder structure provided by the utility model
Figure；
Fig. 2 is the structural representation of piston in air supporting friction-free air cylinder structure shown in Fig. 1；
Fig. 3 is the circumferentially deploying figure of piston shown in Fig. 2.
Description of reference numerals：
1- cylinder barrel 11- air vent 2- piston 21- throttle orifice 3- load supports 4- radial clearances
Specific embodiment
The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only
For clearly illustrating the technical solution of the utility model, therefore example is intended only as, and this reality can not be limited with this
With new protection domain.
It should be noted that unless otherwise stated, technical term used in this application or scientific terminology should be this reality
The ordinary meaning understood with new one of ordinary skill in the art.
Refer to Fig. 1 and Fig. 3, Fig. 1 are embodied as air supporting friction-free air cylinder structure one kind provided by the utility model
The structural representation of mode；Fig. 2 is the structural representation of piston in air supporting friction-free air cylinder structure shown in Fig. 1；Fig. 3 is Fig. 2 institutes
Show the circumferentially deploying figure of piston.
In a kind of specific embodiment, air supporting friction-free air cylinder structure provided by the utility model includes cylinder barrel 1, set
Loaded on the piston 2 in the cylinder barrel 1, and the load supports 3 for being arranged at the outer end of the piston 2；Wherein, the cylinder barrel 1 and institute
State piston 2 to be coaxially disposed, and the radial direction with preset length between the periphery wall of the internal perisporium of the cylinder barrel 1 and the piston 2
Gap 4；The bottom of the cylinder barrel 1 offers the air vent 11 connected with source of the gas；An at least cribbing stream is offered on the piston 2
Hole 21, each described throttle orifice 21 in same row is uniformly distributed along the circumference of the piston 2, the pore diameter range of the throttle orifice 21
For 0.7mm-0.74mm, the quantity of throttle orifice 21 that often arranging includes is 8-12.So, the air cylinder structure devises default aperture model
Enclose the throttle orifice 21 with quantity such that it is able to which leakage flow and the radial direction bearing capacity of piston 2 are caused by the setting of throttle orifice 21
Meet duty requirements, improve its performance, it is ensured that the stability of pneumatic gravity compensation system.
In order to improve throttling performance, it is ensured that liquid communication smoothness, two cribbing discharge orifices 21 can be on the piston 2 offered, two
The number of throttle orifice 21 and aperture in row is equal, and two cribbing discharge orifices 21 the piston 2 axial direction correspondingly
Arrange, to improve stress equalization everywhere, it is ensured that job stability, reduce vibration noise；In theory, throttle orifice 21
It is not limited to arrange two rows, it can also only arrange a row, can also arrange three rows or more multiple rows of, specifically can be wanted according to operating mode
Ask determination.
Axial distance between a row specifically, in throttle orifice 21 described in two rows and the outer face of the piston 2 is described
The a quarter of the height of piston 2；Another row in throttle orifice 21 described in two rows and the axial distance between the inner face of the piston 2
For a quarter of the height of the piston 2.By the restriction of distance between throttle orifice 21 and the outer face of piston 2, further improve
Reasonable structure and optimization property.
Preferably, the aperture of throttle orifice 21 is 0.72mm, often arranges the quantity of throttle orifice 21 for including between 10, the radial direction
The preset length of gap 4 is 0.043mm.As shown in table 1, the parameter value of above-mentioned series is selected, compared with comparative example, with phase
Simultaneously less leakage rate also ensure that to larger radial direction bearing capacity, the optimum purpose of combination property has been reached.Wherein, table
In 1, d is the diameter (i.e. aperture) of throttle orifice 21, and h0 is the radial clearance 4 between piston 2 and cylinder barrel 1, and n is the number of throttle orifice 21
Amount, l/L is the location parameter (i.e. throttle orifice 21 is to the distance of the end face of homonymy piston 2 and the ratio of the height of piston 2) of throttle orifice 21,
W/N is radial direction bearing capacity, and q/L is leakage rate.
The parameter comparison table of table 1
| h0/mm | d/mm | n | l/L | W/N | q/Lmin-1 |
| 0.043 | 0.72 | 10 | 0.25 | 69 | 31 |
| 0.02 | 0.1 | 16 | 0.36 | 65 | 55 |
| 0.04 | 1 | 15 | 0.3 | 70 | 212 |
| 0.06 | 0.2 | 14 | 0.24 | 56 | 52 |
| 0.08 | 0.9 | 13 | 0.19 | 63 | 232 |
| 0.1 | 0.3 | 12 | 0.13 | 72 | 65 |
| 0.12 | 0.8 | 11 | 0.1 | 58 | 109 |
| 0.14 | 0.4 | 9 | 0.16 | 47 | 230 |
| 0.16 | 0.7 | 8 | 0.21 | 35 | 330 |
| 0.18 | 0.5 | 7 | 0.27 | 27 | 510 |
| 0.2 | 0.6 | 6 | 0.33 | 39 | 670 |
Except air supporting friction-free air cylinder structure, this utility model also provides a kind of including above-mentioned air supporting friction-free air cylinder structure
Pneumatic gravity compensation system, other Each parts of the startup gravity compensation system refer to prior art, and here is no longer
Repeat.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " is based on orientation shown in the drawings
Or position relationship, be for only for ease of description this utility model and simplify description, rather than indicate or imply indication device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or more, remove
It is non-separately to have clearly specific restriction.
In this utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, it is for example, it may be fixedly connected, or be detachably connected or integral；Can be
It is mechanically connected, or electrically connects；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in this utility model.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to restriction of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, be changed, being replaced and modification.
Finally it should be noted that：Various embodiments above is only illustrating the technical solution of the utility model, rather than it is limited
System；Although being described in detail to this utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It still can modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent；And these are changed or are replaced, the essence for not making appropriate technical solution departs from this practicality newly
The scope of each embodiment technical scheme of type, it all should cover in the middle of the scope of claim of the present utility model and description.
Claims (7)
1. a kind of air supporting friction-free air cylinder structure, it is characterised in that including cylinder barrel (1), the piston being set in the cylinder barrel (1)
(2), and it is arranged at the load supports (3) of the piston (2) outer end；
The cylinder barrel (1) is coaxially disposed with the piston (2), and the periphery of the internal perisporium of the cylinder barrel (1) and the piston (2)
Radial clearance (4) with preset length between wall；The bottom of the cylinder barrel (1) offers the air vent connected with source of the gas
(11)；
An at least cribbing discharge orifice (21) is offered on the piston (2), each described throttle orifice (21) in same row is along the work
The circumference of plug (2) is uniformly distributed, and the pore diameter range of the throttle orifice (21) is 0.7mm-0.74mm, often arranges the throttle orifice for including
(21) quantity is 8-12.
2. air supporting friction-free air cylinder structure according to claim 1, it is characterised in that offer two on the piston (2)
Cribbing discharge orifice (21), throttle orifice (21) number and aperture in two rows is equal, and two cribbing discharge orifices (21) are in the piston (2)
Axial direction arrange correspondingly.
3. air supporting friction-free air cylinder structure according to claim 2, it is characterised in that in throttle orifice (21) described in two rows
Axial distance between the outer face of one row and the piston (2) for the piston (2) height a quarter；Throttle described in two rows
Axial distance between the inner face of another row in hole (21) and the piston (2) for the piston (2) height a quarter.
4. air supporting friction-free air cylinder structure according to claim 3, it is characterised in that the aperture of the throttle orifice (21) is
0.72mm。
5. air supporting friction-free air cylinder structure according to claim 4, it is characterised in that often arrange throttle orifice (21) number for including
Measure as 10.
6. the air supporting friction-free air cylinder structure according to any one of claim 1-5, it is characterised in that the radial clearance
(4) preset length is 0.043mm.
7. a kind of pneumatic gravity compensation system, including cylinder and the load being connected with the cylinder-driven, it is characterised in that described
Cylinder is the air supporting friction-free air cylinder structure as described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621124219.3U CN206129976U (en) | 2016-10-14 | 2016-10-14 | Pneumatic gravity compensating system and air supporting zero friction cylinder structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621124219.3U CN206129976U (en) | 2016-10-14 | 2016-10-14 | Pneumatic gravity compensating system and air supporting zero friction cylinder structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN206129976U true CN206129976U (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621124219.3U Expired - Fee Related CN206129976U (en) | 2016-10-14 | 2016-10-14 | Pneumatic gravity compensating system and air supporting zero friction cylinder structure thereof |
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| Country | Link |
|---|---|
| CN (1) | CN206129976U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897214A (en) * | 2018-06-13 | 2018-11-27 | 北京石油化工学院 | The compress control method of pneumatic gravity compensation system and pneumatic gravity compensation system |
| CN110282165A (en) * | 2019-06-27 | 2019-09-27 | 中国科学院西安光学精密机械研究所 | A kind of Space Rotating mechanism Ground zero-gravity debugging apparatus |
-
2016
- 2016-10-14 CN CN201621124219.3U patent/CN206129976U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897214A (en) * | 2018-06-13 | 2018-11-27 | 北京石油化工学院 | The compress control method of pneumatic gravity compensation system and pneumatic gravity compensation system |
| CN110282165A (en) * | 2019-06-27 | 2019-09-27 | 中国科学院西安光学精密机械研究所 | A kind of Space Rotating mechanism Ground zero-gravity debugging apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20191014 |
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| CF01 | Termination of patent right due to non-payment of annual fee |