CN218030486U - Two-stage compression piston connecting rod structure and piston connecting rod device - Google Patents
Two-stage compression piston connecting rod structure and piston connecting rod device Download PDFInfo
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- CN218030486U CN218030486U CN202222153825.XU CN202222153825U CN218030486U CN 218030486 U CN218030486 U CN 218030486U CN 202222153825 U CN202222153825 U CN 202222153825U CN 218030486 U CN218030486 U CN 218030486U
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Abstract
The application provides a two-stage compression piston connecting rod structure and a piston connecting rod device, the structure is provided with a shell, a cavity arranged along a first direction is arranged in the shell, a first connecting rod is slidably arranged in the cavity along the first direction, the first connecting rod is hollow, one end of the first connecting rod is provided with an opening, and the other end of the first connecting rod is provided with a first piston; one end of the second connecting rod is provided with a driving part, the other end of the second connecting rod is provided with an installation part, and a connecting part is arranged on the second connecting rod and positioned between the driving part and the installation part; the driving part is arranged in the first connecting rod, the mounting part extends into the cavity through the opening, and the mounting part is provided with a second piston; the connecting part is rotatably connected with the first connecting rod along a first axis; a movable gap is arranged between the two sides of the driving part along the second direction and the inner wall of the first connecting rod; the driving part is connected with the eccentric shaft to drive the first connecting rod and the second connecting rod to reciprocate along a first direction; through the structure, the whole occupied space of the piston connecting rod is reduced, and the whole size and weight of the compressor are reduced.
Description
Technical Field
The disclosure relates generally to the technical field of piston compressors, and particularly relates to a two-stage compression piston connecting rod structure and a piston connecting rod device.
Background
The compressed air is the second largest power energy next to electric power and is a process air source with multiple purposes, and the application range of the compressed air is in industries and departments of petroleum, chemical industry, metallurgy, electric power, machinery, light industry, textile, automobile manufacturing, electronics, food, medicine, biochemistry, national defense, scientific research and the like; the connecting rod is one of the most important structures in the piston type air compressor, the eccentric shaft drives the connecting rod to reciprocate in the cavity to generate high-pressure gas, and if the gas with higher pressure is required to be generated, the gas needs to be compressed for multiple times.
The existing two-stage compression piston connecting rod structure is characterized in that an eccentric shaft drives two piston connecting rods arranged in parallel to reciprocate, two piston rods compress twice in the reciprocating motion to generate higher-pressure gas, and the piston connecting rod in the prior art is limited by the structure of the piston connecting rod, so that the occupied space is large, and the integral size and weight of the compressor are increased.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a two-stage compression piston and rod arrangement that solves the above-mentioned problems.
The present application provides in a first aspect a two-stage compression piston connecting rod structure comprising:
the device comprises a shell, a first side plate and a second side plate, wherein a cavity arranged along a first direction is formed in the shell;
the first connecting rod can be slidably installed in the cavity along the first direction, the first connecting rod is hollow, an opening is formed in one end of the first connecting rod, and a first piston is arranged at the other end of the first connecting rod;
the connecting device comprises a first connecting rod, a second connecting rod and a connecting rod, wherein one end of the first connecting rod is provided with a driving part, the other end of the first connecting rod is provided with an installation part, and a connecting part is arranged on the first connecting rod and positioned between the driving part and the installation part; the driving part is arranged in the first connecting rod, and the mounting part extends into the cavity through the opening; the mounting part is provided with a second piston; the connecting portion has a first axis perpendicular to the first direction; the connecting part is rotatably connected with the first connecting rod along the first axis;
wherein, a movable gap is arranged between the two sides of the driving part along a second direction and the inner wall of the first connecting rod, and the second direction is vertical to the first direction and the first axis; the driving part is used for being rotatably connected with the eccentric shaft so as to drive the first connecting rod and the second connecting rod to reciprocate along a first direction.
According to the technical scheme that this application embodiment provided, connecting portion include and set up along the third direction first mounting hole on the second connecting rod, install first bearing in the first mounting hole, and install drive pin in the first bearing, drive pin both ends with first connecting rod fixed connection, the third direction is on a parallel with first axis.
According to the technical scheme provided by the embodiment of the application, the driving part comprises a second mounting hole arranged on the second connecting rod along the third direction and a second bearing fixedly mounted in the second mounting hole, and the second bearing is used for being connected with the eccentric shaft.
According to the technical scheme that this application embodiment provided, first connecting rod corresponds one side of second mounting hole is equipped with first opening, correspond on the casing one side of first opening is equipped with the second opening, the eccentric shaft passes the second opening with first opening with the second bearing is connected.
According to the technical scheme provided by the embodiment of the application, the second bearing is a double-row angular contact ball bearing.
According to the technical scheme provided by the embodiment of the application, the first bearing is a needle bearing.
A second aspect of the present application provides a piston rod assembly, comprising an eccentric shaft, a driving device and a two-stage compression piston rod structure as described above, wherein the eccentric shaft is disposed along a third direction and rotatably connected to the driving portion, the eccentric shaft is connected to the driving device, and the driving device is configured to drive the eccentric shaft to rotate.
The beneficial effect of this application lies in: based on the technical scheme provided by the application, in the process that the eccentric shaft drives the driving part to move due to the arrangement of the movable gap, the second connecting rod moves along the first direction while floating in the first connecting rod, so that the first connecting rod is driven to move along the first direction, the first piston and the second piston are driven to reciprocate in the cavity, and two-stage compression is performed on gas; because the second connecting rod is arranged in the first connecting rod, the mounting space of the connecting rod is shortened, the whole occupied space of the piston connecting rod is reduced, and the whole size and weight of the compressor are reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic illustration of a two-stage compression piston connecting rod configuration of the present application;
fig. 2 is a cross-sectional view of a piston linkage arrangement of the present application.
In the figure: 1. a first piston; 2. a second piston; 3. a first bearing; 4. a second bearing; 5. a drive pin; 6. a first link; 7. a second link; 8. an eccentric shaft; 9. a connecting portion; 10. a second mounting hole; 11. a drive section; 12. a clearance for movement; 13. a housing; 14. a drive device.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
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 accompanying drawings in conjunction with embodiments.
Example 1
Please refer to fig. 1, which is a schematic diagram of a two-stage compression piston rod structure provided in the present application, including:
a housing 13, wherein the housing 13 has a cavity arranged along a first direction;
the first connecting rod 6 can be slidably installed in the cavity along the first direction, the first connecting rod 6 is hollow, an opening is formed in one end of the first connecting rod 6, and a first piston 1 is arranged at the other end of the first connecting rod;
the connecting device comprises a second connecting rod 7, wherein one end of the second connecting rod 7 is provided with a driving part 11, the other end of the second connecting rod 7 is provided with an installation part, and a connecting part 9 is arranged on the second connecting rod 7 and positioned between the driving part 11 and the installation part; the driving part 11 is arranged inside the first connecting rod 6, and the mounting part extends into the cavity through the opening; the mounting part is provided with a second piston 2; the connection portion 9 has a first axis perpendicular to the first direction; the connecting part 9 is rotatably connected with the first connecting rod 6 along the first axis;
wherein, a movable gap 12 is arranged between two sides of the driving part 11 along a second direction and the inner wall of the first connecting rod 6, and the second direction is vertical to the first direction and the first axis; the driving part 11 is used for being rotatably connected with the eccentric shaft 8 to drive the first connecting rod 6 and the second connecting rod 7 to reciprocate along the first direction.
Specifically, the cavity comprises a first piston cavity, a connecting rod cavity and a second piston cavity which are sequentially communicated along a first direction; the first piston 1 is arranged in the first piston cavity, the second piston 2 is arranged in the second piston cavity, a first sealing ring is arranged between the first piston cavity and the connecting rod cavity, and a second sealing ring is arranged between the second piston cavity and the connecting rod cavity and used for ensuring the sealing performance of the first piston cavity and the second piston cavity;
specifically, the lengths and sizes of the first connecting rod 6 and the second connecting rod 7 can be changed according to the designed displacement;
the working principle is as follows: in the process that the eccentric shaft 8 drives the driving part 10 to move due to the arrangement of the movable gap 12, the second connecting rod 7 moves along the first direction while floating inside the first connecting rod 6, so as to drive the first connecting rod 6 to move along the first direction, further drive the first piston 1 and the second piston 2 to respectively reciprocate in the first piston cavity and the second piston cavity, gas enters the first piston cavity to carry out primary compression, and after the compression is finished, the gas enters the second piston cavity through a gas path to carry out secondary compression; because the second connecting rod 7 is arranged in the first connecting rod 6, the installation space of the connecting rod is shortened, the whole occupied space of the piston connecting rod is reduced, and the whole size and weight of the compressor are reduced.
In some embodiments, the connecting portion 9 includes a first mounting hole disposed on the second link 7 along a third direction, a first bearing 3 mounted in the first mounting hole, and a driving pin 5 mounted in the first bearing 3, wherein two ends of the driving pin 5 are fixedly connected to the first link 6, and the third direction is parallel to the first axis.
Specifically, the first bearing 3 and the first mounting hole are in interference fit;
specifically, the eccentric shaft 8 is arranged along a third direction and is rotatably connected with the driving part 11;
specifically, when the eccentric shaft 8 drives the second connecting rod 7 to reciprocate along the first direction, the driving pin 5 and the first bearing 3 are matched to drive the first connecting rod to reciprocate along the first direction.
In some embodiments, the driving part 11 comprises a second mounting hole 10 provided on the second connecting rod 7 along the third direction, and a second bearing 4 fixedly mounted in the second mounting hole 10, wherein the second bearing 4 is used for connecting with the eccentric shaft 8.
Specifically, the second mounting hole 10 and the second bearing 4 are in interference fit;
specifically, the second bearing 4 is connected to the eccentric shaft 8, and the eccentric shaft 8 drives the second connecting rod 7 to reciprocate along the first direction.
In some embodiments, the first connecting rod 6 has a first through hole at a side corresponding to the second mounting hole 10, the housing 13 has a second through hole at a side corresponding to the first through hole, and the eccentric shaft 8 passes through the second through hole and the first through hole to be connected to the second bearing 4.
Specifically, the first through opening and the second through opening are arranged along a third direction.
In certain embodiments, the second bearing 4 is a double row angular contact ball bearing.
Specifically, the double-row angular contact ball bearing can bear radial load and axial load acting in two directions, limit axial displacement of the shaft in two aspects, bear overturning moment, and ensure the stability when the eccentric shaft 8 drives the second bearing 4 to rotate.
In certain embodiments, the first bearing 3 is a needle bearing.
Specifically, a needle bearing matched with the transmission pin 5 is selected, so that noise is reduced, and the service life is prolonged;
specifically, adopt the drawn cup bearing who is equipped with two sealing washers, sealed effect is better, guarantees that the inside grease of bearing does not reveal increase of service life.
Example 2
Referring to fig. 2, a cross-sectional view of a piston connecting rod assembly provided by the present application includes an eccentric shaft 8, a driving device 14, and a two-stage compression piston connecting rod structure as described above, wherein the eccentric shaft 8 is disposed along a third direction and is rotatably connected to the driving portion 11, the eccentric shaft 8 is connected to the driving device 14, and the driving device 14 is used for driving the eccentric shaft 8 to rotate.
Specifically, the driving device 14 is a motor;
specifically, the driving device 14 drives the eccentric shaft 8 to rotate, and drives the second connecting rod 7 to reciprocate along the first direction through the second bearing 4.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. A two-stage compression piston connecting rod structure comprising:
the device comprises a shell, a first side plate and a second side plate, wherein a cavity arranged along a first direction is formed in the shell;
the first connecting rod (6) can be slidably installed in the cavity along the first direction, the first connecting rod (6) is hollow, an opening is formed in one end of the first connecting rod, and a first piston (1) is arranged at the other end of the first connecting rod;
one end of the second connecting rod (7) is provided with a driving part, the other end of the second connecting rod (7) is provided with an installation part, and a connecting part (9) is arranged on the second connecting rod (7) and positioned between the driving part and the installation part; the driving part (11) is arranged inside the first connecting rod (6), and the mounting part extends into the cavity through the opening; the mounting part is provided with a second piston (2); the connection (9) has a first axis, which is perpendicular to the first direction; the connecting part (9) is rotatably connected with the first connecting rod (6) along the first axis;
wherein, a movable gap (12) is arranged between the two sides of the driving part (11) along a second direction and the inner wall of the first connecting rod (6), and the second direction is vertical to the first direction and the first axis; the driving part (11) is used for being rotatably connected with the eccentric shaft (8) so as to drive the first connecting rod (6) and the second connecting rod (7) to reciprocate along a first direction.
2. A two-stage compression piston connecting rod structure according to claim 1, characterized in that the connecting portion (9) comprises a first mounting hole provided in the second connecting rod (7) in a third direction, a first bearing (3) mounted in the first mounting hole, and a driving pin (5) mounted in the first bearing (3), both ends of the driving pin (5) being fixedly connected to the first connecting rod (6), the third direction being parallel to the first axis.
3. A two-stage compression piston connecting rod structure according to claim 2, characterized in that the driving portion (11) comprises a second mounting hole (10) provided in the second connecting rod (7) in a third direction, and a second bearing (4) fixedly mounted in the second mounting hole (10), the second bearing (4) being adapted to be connected to the eccentric shaft (8).
4. A two-stage compression piston and connecting rod arrangement according to claim 3, characterized in that the first connecting rod (6) is provided with a first through opening on the side corresponding to the second mounting hole (10), and the housing (13) is provided with a second through opening on the side corresponding to the first through opening, through which the eccentric shaft (8) is passed and which is connected to the second bearing (4).
5. A two-stage compression piston connecting rod arrangement according to claim 3, characterised in that the second bearing (4) is a double row angular contact ball bearing.
6. A two-stage compression piston connecting rod arrangement according to claim 2, characterised in that the first bearing (3) is a needle bearing.
7. Piston rod arrangement, characterized by an eccentric shaft (8), a drive means (14) and a two-stage compression piston connecting rod arrangement according to any one of claims 1-6, said eccentric shaft (8) being arranged in a third direction and being rotatably connected to said drive section (11), said eccentric shaft (8) being connected to said drive means (14), said drive means (14) being adapted to drive said eccentric shaft (8) in rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222153825.XU CN218030486U (en) | 2022-08-16 | 2022-08-16 | Two-stage compression piston connecting rod structure and piston connecting rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222153825.XU CN218030486U (en) | 2022-08-16 | 2022-08-16 | Two-stage compression piston connecting rod structure and piston connecting rod device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218030486U true CN218030486U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222153825.XU Active CN218030486U (en) | 2022-08-16 | 2022-08-16 | Two-stage compression piston connecting rod structure and piston connecting rod device |
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| Country | Link |
|---|---|
| CN (1) | CN218030486U (en) |
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- 2022-08-16 CN CN202222153825.XU patent/CN218030486U/en active Active
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Denomination of utility model: A two-stage compression piston connecting rod structure and piston connecting rod device Effective date of registration: 20230421 Granted publication date: 20221213 Pledgee: Bank of China Limited Bazhou Branch Pledgor: HEBEI HAOFANG NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2023110000171 |