CN215633631U - Crankshaft structure of air compressor - Google Patents
Crankshaft structure of air compressor Download PDFInfo
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- CN215633631U CN215633631U CN202122434175.1U CN202122434175U CN215633631U CN 215633631 U CN215633631 U CN 215633631U CN 202122434175 U CN202122434175 U CN 202122434175U CN 215633631 U CN215633631 U CN 215633631U
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Abstract
The utility model discloses a crankshaft structure of an air compressor, which comprises an input shaft, a front crank and a rear crank which are sequentially spliced, wherein the sides of adjacent components are fixed through bolts; the middle part of the input shaft is fixed on the front side of the air compressor box body through a front fixing component, and the tail end of the rear crank is fixed on the back side of the air compressor box body through a rear fixing component; a synchronous shaft is arranged between the front crank and the rear crank, and the synchronous shaft is eccentrically arranged; the synchronous shaft and the front crank are integrated components, the tail end of the synchronous shaft is embedded into a groove of the rear crank, and a circle of annular groove is formed on the end faces of the front crank and the rear crank around the synchronous shaft; a sliding cylinder is sleeved on the synchronizing shaft, two ends of the sliding cylinder are limited through annular grooves, and two ends of the sliding cylinder are respectively in rotating connection with the front crank and the rear crank through bearings; the sliding barrel is provided with a plurality of eccentric discs, and the eccentric discs are used for connecting the cylinder rod. The crankshaft structure is adopted, so that the transmission is stable, the replacement is easy, and the occupied space of the air compressor box body is small.
Description
Technical Field
The utility model relates to the technical field of air compressors, in particular to a crankshaft structure of an air compressor.
Background
For improving the compression effect of air, the air compressor machine sets up a plurality of cylinders usually, and a plurality of cylinders are connected on a box, then set up the bent axle in the box. The crankshaft is driven to rotate, so that the cylinder rod is driven to reciprocate. The crankshaft of the traditional air compressor is U-shaped, the amplitude of the swing arm is large, and the space of a box body of the air compressor is occupied. The problem of large motion amplitude of the U-shaped crankshaft is not solved, and part of air compressors are driven by cams. The cam mode can generally reach the operation effect of single-end air compressor machine, but stability can be poor when the multiunit cylinder of simultaneous drive, and wearing and tearing are serious.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a crankshaft structure of an air compressor, which solves the problems of poor mechanical performance of a crankshaft and overlarge occupied space of a box body of the air compressor.
In order to achieve the purpose, the utility model provides the following technical scheme:
a crankshaft structure of an air compressor comprises an input shaft, a front crank and a rear crank which are sequentially spliced, adjacent components are clamped, and the sides of the adjacent components are fixed through bolts;
the input shaft is sleeved with a front fixed disc and a shelter disc, a cavity is enclosed by the front fixed disc and the shelter disc, a bearing is placed in the cavity, and the front fixed disc is fixed on the front surface of the air compressor box body;
a synchronous shaft is arranged between the front crank and the rear crank, and the synchronous shaft is eccentrically arranged; the synchronous shaft and the front crank are integrated components, the tail end of the synchronous shaft is embedded into a groove of the rear crank, and a circle of annular groove is formed on the end faces of the front crank and the rear crank around the synchronous shaft; a sliding cylinder is sleeved on the synchronizing shaft, two ends of the sliding cylinder are limited through annular grooves, and two ends of the sliding cylinder are respectively in rotating connection with the front crank and the rear crank through bearings; the sliding cylinder is provided with a plurality of eccentric discs, and the eccentric discs are used for connecting the cylinder rod;
the tail end of the rear crank is rotatably connected with a rear fixing disc through a bearing, the rear fixing disc is fixed on the back face of the air compressor box body, and a bearing end cover is arranged on the rear fixing disc.
Preferably, the input shaft and the rear crank are integrally horn-shaped.
Preferably, the bearing between the front fixed disc and the shelter disc is a double-row ball bearing.
Preferably, cavities are arranged inside the front crank and the synchronizing shaft and inside the rear crank, a groove is arranged at the position of the input shaft corresponding to the port of the cavity, the input shaft is connected with the front crank through a connecting column, and the synchronizing shaft is connected with the rear crank through a reinforcing bolt.
The crankshaft structure of the air compressor adopting the structure has the advantages of stable transmission, convenient replacement of all parts and good mechanical performance. The common eccentric motion of the front crank and the eccentric disc replaces the large-range swing arm motion of the traditional crankshaft, and the space of the air compressor box body occupied by the crankshaft structure is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a front view of an air compressor according to an embodiment of the present invention;
fig. 3 is a sectional view taken along line a-a in fig. 2.
Reference numerals
1. An input shaft; 2. a mask disk; 3. a double row ball bearing; 4. a front fixed disk; 5. connecting columns; 6. a front crank; 7. a slide cylinder; 8. a cavity; 9. an eccentric disc; 10. a rear crank; 11. a rear fixing disc; 12. an end cap; 13. a lubricating sleeve; 14. a limiting member; 15. the bolt is reinforced.
Detailed Description
The technical scheme of the utility model is further explained by combining the drawings and the embodiment.
As shown in the figure, the crankshaft structure of the air compressor comprises an input shaft 1, a front crank 6 and a rear crank 10 which are sequentially spliced, adjacent components are clamped, and the side is fixed through a bolt. The input shaft 1 and the rear crank 10 are located on the same central axis, and the central axis of the front crank 6 is offset from the central axis of the input shaft 1.
The input shaft 1 is sleeved with a front fixing component which is fixed on the front surface of the box body. The front fixing component comprises a front fixing disc 4 and a shelter disc 2, a cavity 8 is enclosed between the front fixing disc and the shelter disc, a bearing is placed in the cavity 8, and the bearing is sleeved on the input shaft 1. In order to reduce the abrasion, a lubricating sleeve 13 is arranged between the front fixed disc 4, the bunker disc 2 and the input shaft 1. The whole input shaft 1 is horn-shaped, and the larger end of the input shaft is positioned in the box body, so that the front fixed disk 4 is convenient to limit.
The front crank 6 is provided with a synchronizing shaft, the synchronizing shaft is sleeved with a sliding barrel 7, and two ends of the sliding barrel 7 are limited through the front crank 6 and a rear crank 10. Specifically, the end surfaces of the front crank 6 and the rear crank 10, which are in contact with the sliding cylinder 7, are provided with annular grooves, bearings are arranged in the grooves, and the inner and outer annular surfaces of the bearings are respectively abutted against the sliding cylinder 7 and the front/rear crank 10. The bearing side of this position is limited by a stopper 14. In order to achieve the eccentric effect, the synchronizing shaft and the groove on the front crank 6 are eccentrically arranged, and the corresponding groove on the rear crank 10 is also eccentrically arranged.
The slide cylinder 7 is provided with a plurality of eccentric discs 9, and the number of the eccentric discs 9 is related to the number of the cylinders. The eccentric discs 9 are connected to the piston rods of the cylinders by bearings, respectively. The eccentric distance of the eccentric disc 9 and the synchronous shaft is related to the reciprocating distance of the cylinder rod.
The rear fixing component is sleeved at the tail end of the rear crank 10 and fixed on the back of the box body. The rear fixing component comprises a rear fixing disc 11 and an end cover 12, the rear fixing disc 11 is rotatably connected with the rear crank 10 through a bearing, and the end cover 12 is used for covering the bearing. The rear crank 10 is integrally horn-shaped, and the larger end of the rear crank is positioned in the box body, so that the rear fixing disc 11 is convenient to limit.
In order to facilitate the assembly of the crankshaft, a cavity 8 is arranged inside the synchronizing shaft and the front crank 6 and inside the rear crank 10, a groove is arranged at the position of the input shaft 1 corresponding to the port of the cavity 8, the input shaft 1 is connected with the front crank 6 through a connecting column 5 (a polyhedral connecting column 5 or a stud), and the synchronizing shaft is connected with the rear crank 10 through a reinforcing bolt 15.
In actual use, the bearing on the crankshaft structure is also limited. The bearing at the front fixed component uses the double-row ball bearing 3, so that the noise and vibration can be reduced, and the stability of the synchronous shaft of the front crank 6 is prolonged. Deep groove ball bearings are used at other positions, specifically, 6010-2RS bearings are used at two ends of the sliding barrel 7, 61916-2RS bearings are used for the eccentric disc 9, and 6011-2RS bearings are used for the rear fixing assembly.
The working principle is as follows:
the input shaft 1 is powered by a motor to rotate the front crank 6 and the rear crank 10. In the rotating process, the central axis of the front crank 6 is not overlapped with the central axis of the input shaft 1, so that the front crank 6 integrally rotates eccentrically, the sliding cylinder 7 is driven to rotate eccentrically, the eccentric disc 9 on the sliding cylinder 7 further enhances the eccentric amplitude, and finally the coordinated reciprocating motion of a plurality of groups of cylinder rods is realized.
The above is a specific embodiment of the present invention, but the scope of the present invention should not be limited thereto. Any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the appended claims.
Claims (4)
1. The utility model provides a bent axle structure of air compressor machine which characterized in that: the device comprises an input shaft, a front crank and a rear crank which are sequentially spliced, adjacent parts are clamped, and the sides are fixed through bolts;
the input shaft is sleeved with a front fixed disc and a shelter disc, a cavity is enclosed by the front fixed disc and the shelter disc, a bearing is placed in the cavity, and the front fixed disc is fixed on the front surface of the air compressor box body;
a synchronous shaft is arranged between the front crank and the rear crank, and the synchronous shaft is eccentrically arranged; the synchronous shaft and the front crank are integrated components, the tail end of the synchronous shaft is embedded into a groove of the rear crank, and a circle of annular groove is formed on the end faces of the front crank and the rear crank around the synchronous shaft; a sliding cylinder is sleeved on the synchronizing shaft, two ends of the sliding cylinder are limited through annular grooves, and two ends of the sliding cylinder are respectively in rotating connection with the front crank and the rear crank through bearings; the sliding cylinder is provided with a plurality of eccentric discs, and the eccentric discs are used for connecting the cylinder rod;
the tail end of the rear crank is rotatably connected with a rear fixing disc through a bearing, the rear fixing disc is fixed on the back face of the air compressor box body, and a bearing end cover is arranged on the rear fixing disc.
2. The crankshaft structure of the air compressor according to claim 1, wherein: the input shaft and the rear crank are integrally horn-shaped.
3. The crankshaft structure of the air compressor according to claim 1, wherein: and the bearing between the front fixed disc and the bunker disc is a double-row ball bearing.
4. The crankshaft structure of the air compressor according to claim 1, wherein: the front crank and the synchronizing shaft are internally provided with cavities, the rear crank is internally provided with cavities, the input shaft is provided with a groove corresponding to the port of the cavity, the input shaft is connected with the front crank through a connecting column, and the synchronizing shaft is connected with the rear crank through a reinforcing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122434175.1U CN215633631U (en) | 2021-10-09 | 2021-10-09 | Crankshaft structure of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122434175.1U CN215633631U (en) | 2021-10-09 | 2021-10-09 | Crankshaft structure of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215633631U true CN215633631U (en) | 2022-01-25 |
Family
ID=79934362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122434175.1U Active CN215633631U (en) | 2021-10-09 | 2021-10-09 | Crankshaft structure of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633631U (en) |
-
2021
- 2021-10-09 CN CN202122434175.1U patent/CN215633631U/en active Active
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