CN115681385A - Parallel gas spring piston assembly sharing piston - Google Patents
Parallel gas spring piston assembly sharing piston Download PDFInfo
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- CN115681385A CN115681385A CN202211373318.5A CN202211373318A CN115681385A CN 115681385 A CN115681385 A CN 115681385A CN 202211373318 A CN202211373318 A CN 202211373318A CN 115681385 A CN115681385 A CN 115681385A
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- gas spring
- piston
- piston assembly
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Abstract
The application relates to the field of space refrigeration, in particular to a parallel gas spring piston assembly of a common piston, which comprises a moving part, a piston assembly and a gas channel, wherein: a first gas spring cavity and a second gas spring cavity are arranged in the moving part; the first gas spring cavity is communicated with the second gas spring cavity through a gas channel; the piston assembly is arranged inside the moving part and assembled with the moving part into a whole; the moving member is capable of linear reciprocating motion along the piston assembly. The rotor has the advantages of few matching surfaces, light weight of the rotor, no mechanical fatigue failure risk advantage in the running process of moving parts, and obvious advantage especially under the high-temperature working condition.
Description
Technical Field
The application relates to the field of space refrigeration, in particular to a parallel gas spring piston assembly of a common piston.
Background
A Linear oscillating motor (Linear oscillating motor) is a transmission device which can directly and rapidly convert electric energy and mechanical energy generated by Linear motion. Because the linear oscillation motor does not need an additional device for changing the rotary motion into the linear motion, the structure of the system is greatly simplified, and the mass and the volume are reduced. In the field of linear driving, a linear oscillation motor can be directly driven, and various positioning errors caused by intermediate links can be eliminated.
Other reciprocating linear motion components such as linear oscillation motors need to adopt reliable radial support and axial rigidity in the operation process. Particularly, in products of a linear Stirling refrigerator and a generator, an ejector (a gas distribution piston) and a power piston do linear reciprocating motion according to designed stroke and frequency, and the equipment has important application prospects in the aspects of low-temperature environment acquisition, electric energy acquisition and the like.
In the Stirling refrigerator and the generator product, the axial rigidity and the radial support characteristic of a moving part directly determine the performance characteristic parameters of the related product, and the axial rigidity in the traditional Stirling engine is mainly provided by the following modes: common cylindrical springs, gas springs, flexible leaf springs, and the like; the radial supporting mode mainly comprises the following steps: aerostatic bearings and flexible leaf springs.
However, the existing flexible plate spring support/gas spring reset mode has large weight and difficult adjustment of rigidity, and has the risk of mechanical fatigue failure.
Disclosure of Invention
The application provides a parallel gas spring piston assembly of a common piston, which can provide suitable axial stiffness to components which do linear reciprocating motion.
To achieve the above object, the present application provides a common piston parallel gas spring piston assembly comprising a moving part, a piston assembly and a gas passage, wherein: a first gas spring cavity and a second gas spring cavity are arranged in the moving part; the first gas spring cavity is communicated with the second gas spring cavity through a gas channel; the piston assembly is arranged inside the moving part and assembled with the moving part into a whole; the moving member is capable of linear reciprocating motion along the piston assembly.
Furthermore, the first gas spring cavity and the second gas spring cavity are filled with gas with certain pressure.
Further, piston assembly is the echelonment, including fixed part, connecting rod and piston head, wherein: the fixed part is arranged outside the moving part, and the piston head is arranged inside the moving part; the connecting rod is respectively connected with the fixed part and the piston head.
Further, in the initial state, the piston head is disposed between the first gas spring chamber and the second gas spring chamber.
Further, when the moving part moves leftwards, the piston head enters the inside of the second gas spring cavity and extrudes the gas in the second gas spring cavity; when the moving part moves rightwards, the piston head enters the first gas spring cavity and extrudes the gas in the first gas spring cavity; the adjustment of the gas pressure in the first gas spring cavity and the second gas spring cavity can be realized along with the linear reciprocating motion of the moving part.
Further, the piston assembly is sealed by a gap, and the piston assembly is coated with a wear-resistant lubricating material.
The invention provides a parallel gas spring piston assembly sharing a piston, which has the following beneficial effects:
this application is through the area of adjusting the sharing piston, the volume and the inside inflation pressure of gas spring cavity, realize the regulation to vibration system's axial rigidity, compare with traditional flexbile plate spring support/gas spring reset mode and have no mechanical fatigue failure risk advantage at moving part operation in-process, especially the advantage is obvious under the high temperature operating mode, compare with traditional single cavity gas spring piston and have the fitting surface less, the advantage that the active cell quality is light.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and the description of the exemplary embodiments of the present application are provided for explaining the present application and do not constitute an undue limitation on the present application. In the drawings:
FIG. 1 is a schematic diagram of a common piston parallel gas spring piston assembly provided in accordance with an embodiment of the present application;
FIG. 2 is a perspective cross-sectional view of a common piston parallel gas spring piston assembly provided in accordance with an embodiment of the present application;
in the figure: 1-moving part, 2-piston component, 21-fixed part, 22-connecting rod, 23-piston head, 3-first gas spring cavity, 4-second gas spring cavity and 5-gas channel.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-2, the present application provides a common piston parallel gas spring piston assembly comprising a moving part 1, a piston assembly 2, and a gas passage 5, wherein: a first gas spring cavity 3 and a second gas spring cavity 4 are arranged in the moving part 1; the first gas spring cavity 3 is communicated with the second gas spring cavity 4 through a gas channel 5; the piston assembly 2 is arranged inside the moving part 1 and is assembled with the moving part 1 into a whole; the moving member 1 can linearly reciprocate along the piston assembly 2.
Specifically, the parallelly connected gas spring piston subassembly of sharing piston that this application embodiment provided has realized two parallelly connected gas spring through the structure of single piston, has light in weight, rigidity and adjusts easily, possesses the characteristic of not having fatigue operation simultaneously, has obvious advantage under the high temperature operating mode, and traditional single cavity gas spring piston compares and has the advantage that the fitting surface is few, the active cell quality is light. During operation, the piston assembly 2 keeps static, the moving part 1 can perform linear reciprocating motion, during the moving process, the volumes of the first gas spring cavity 3 and the second gas spring cavity 4 can change (when the volume of the first gas spring cavity 3 is increased, the volume of the second gas spring cavity 4 can be reduced, and vice versa), so that the gas pressure sealed in the two cavities can change, the acting force acting on the piston assembly 2 changes, and after the change of the internal pressure of the overall action acts on the piston assembly 2, the acting force returning to the balance position can be generated, so that the moving part 1 returns to the balance position, the effect of the gas spring is realized, the axial stiffness of the vibration system is adjusted, and compared with a traditional flexible plate spring supporting/gas spring resetting mode, the risk of mechanical fatigue failure does not exist in the moving part 1 during the moving process.
Furthermore, the first gas spring cavity 3 and the second gas spring cavity 4 are filled with gas with certain pressure. The specific pressure of gas is selected according to actual need, the first gas spring cavity 3 and the second gas spring cavity 4 share one piston assembly 2, and under the action of the piston assembly 2, the first gas spring cavity 3 and the second gas spring cavity 4 can extrude the gas inside in the motion process, so that the balance of the pressure inside the two chambers is kept, and the motion part 1 can integrally reciprocate along a straight line under the action of the pressure of the gas.
Further, the piston assembly 2 is stepped and includes a fixing portion 21, a connecting rod 22 and a piston head 23, wherein: the fixed part 21 is arranged outside the moving part 1, and the piston head 23 is arranged inside the moving part 1; the connecting rod 22 is connected to the fixed portion 21 and the piston head 23, respectively.
Further, in the initial state, the piston head 23 is disposed between the first gas spring chamber 3 and the second gas spring chamber 4.
Further, when the moving part 1 moves leftwards, the piston head 23 enters the inside of the second gas spring chamber 4 and presses the gas therein; when the moving part 1 moves rightwards, the piston head 23 enters the first gas spring cavity 3 and extrudes the gas in the first gas spring cavity; along with the linear reciprocating motion of the moving part 1, the adjustment of the gas pressure in the first gas spring cavity 3 and the second gas spring cavity 4 can be realized.
Specifically, the linear reciprocating component 1 realizes the simultaneous change of the volumes of the first gas spring cavity 3 and the second gas spring cavity 4 under the external driving acting force, thereby causing the change of the internal gas pressure of the first gas spring cavity 3 and the second gas spring cavity 4, thereby realizing the storage of energy, the gas communication is carried out between the first gas spring cavity 3 and the second gas spring cavity 4 through the gas channel 5, in the linear reciprocating process, because the pressure in the first gas spring cavity 3 and the second gas spring cavity 4 is unbalanced, high-pressure gas can flow to a low-pressure cavity through the gas channel 5 under the action of pressure difference, and the balance position in the initial state can be slowly recovered under the subsequent reduction of the external driving force or the pressure action of the linear reciprocating component 1 in the spring cavity.
Further, the piston assembly 2 adopts clearance seal, and the piston assembly 2 is coated with wear-resistant lubricating material. Piston assembly 2 adopts the clearance to seal, prevents the gas leakage between two cavitys, can improve the gaseous leakproofness of small clearance department, and the last spraying of piston assembly 2 has wear-resisting lubricating material, reduces the frictional force between piston assembly 2 and the cavity, guarantees 1 linear reciprocating motion's of moving part smoothness nature.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. A piston-sharing parallel gas spring piston assembly comprising a moving part, a piston assembly and a gas passage, wherein:
a first gas spring cavity and a second gas spring cavity are arranged in the moving part;
the first gas spring cavity is communicated with the second gas spring cavity through the gas channel;
the piston assembly is arranged inside the moving part and is assembled with the moving part into a whole;
the moving member is linearly reciprocable along the piston assembly.
2. The common piston, parallel gas spring piston assembly of claim 1, wherein said first gas spring chamber and said second gas spring chamber are each filled with a gas under pressure.
3. The common piston, parallel gas spring piston assembly of claim 2, wherein said piston assembly is stepped, comprising a fixed portion, a connecting rod, and a piston head, wherein:
the fixed part is arranged outside the moving part, and the piston head is arranged inside the moving part;
the connecting rod is respectively connected with the fixed part and the piston head.
4. The common piston, parallel gas spring piston assembly of claim 3, wherein in an initial state, the piston head is disposed between the first gas spring chamber and the second gas spring chamber.
5. The common piston, parallel gas spring piston assembly of claim 4, wherein said piston head enters the interior of said second gas spring chamber and compresses the gas therein as said moving member moves to the left; when the moving part moves rightwards, the piston head enters the first gas spring cavity and extrudes the gas in the first gas spring cavity; the adjustment of the gas pressure in the first gas spring cavity and the second gas spring cavity can be realized along with the linear reciprocating motion of the moving part.
6. The common piston, parallel gas spring piston assembly of claim 3, wherein said piston assembly employs a clearance seal and said piston assembly is coated with a wear resistant lubricating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211373318.5A CN115681385B (en) | 2022-11-03 | 2022-11-03 | Parallel gas spring piston assembly with shared piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211373318.5A CN115681385B (en) | 2022-11-03 | 2022-11-03 | Parallel gas spring piston assembly with shared piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115681385A true CN115681385A (en) | 2023-02-03 |
| CN115681385B CN115681385B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211373318.5A Active CN115681385B (en) | 2022-11-03 | 2022-11-03 | Parallel gas spring piston assembly with shared piston |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10332001B3 (en) * | 2003-07-14 | 2005-02-03 | Howaldtswerke - Deutsche Werft Ag | Gas pressure spring element for damping shock has gas in rod-side chamber in outer cylinder compressed under the traction load |
| CN102384200A (en) * | 2011-09-23 | 2012-03-21 | 宁波一力减震器有限公司 | High-damping air spring |
| CN103644234A (en) * | 2013-12-17 | 2014-03-19 | 吉林大学 | Parallel air spring |
| CN108397439A (en) * | 2018-03-30 | 2018-08-14 | 苏州道森钻采设备股份有限公司 | A kind of movement of cylinder block type fluid pressure drive device |
-
2022
- 2022-11-03 CN CN202211373318.5A patent/CN115681385B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10332001B3 (en) * | 2003-07-14 | 2005-02-03 | Howaldtswerke - Deutsche Werft Ag | Gas pressure spring element for damping shock has gas in rod-side chamber in outer cylinder compressed under the traction load |
| CN102384200A (en) * | 2011-09-23 | 2012-03-21 | 宁波一力减震器有限公司 | High-damping air spring |
| CN103644234A (en) * | 2013-12-17 | 2014-03-19 | 吉林大学 | Parallel air spring |
| CN108397439A (en) * | 2018-03-30 | 2018-08-14 | 苏州道森钻采设备股份有限公司 | A kind of movement of cylinder block type fluid pressure drive device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115681385B (en) | 2023-07-21 |
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