Eccentric mechanism of air compressor

Abstract

The utility model provides an eccentric mechanism of an air compressor, and belongs to the technical field of air compressors. The air compressor solves the problems that an existing air compressor is low in acting efficiency, and stress is unbalanced when a main shaft works. The eccentric mechanism of the air compressor comprises a main shaft, one end of the main shaft is sleeved with a first eccentric wheel, a second eccentric wheel, a third eccentric wheel and a fourth eccentric wheel, and the first eccentric wheel, the second eccentric wheel, the third eccentric wheel and the fourth eccentric wheel are freely and smoothly arranged in the axial direction of the main shaft. The second eccentric wheel deflects around the main shaft by an angle alpha which is larger than or equal to 0 degree and smaller than or equal to 180 degrees relative to the first eccentric wheel, the third eccentric wheel deflects around the main shaft by 180 degrees relative to the first eccentric wheel, and the fourth eccentric wheel deflects around the main shaft by 180 degrees relative to the second eccentric wheel. According to the structure, the vibration and noise of the whole machine during working are reduced, the working efficiency of the air compressor is improved, the arrangement of the four eccentric wheels on the main shaft can be changed in any sequence according to the structural design of the air compressor, and the position arrangement flexibility of the four eccentric wheels is improved.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor technology, and specifically refers to an eccentric mechanism for an air compressor. Background Technology

[0002] Existing air compressors generally include a crankcase, a main shaft, and a connecting rod. The main shaft extends into the crankcase, and an eccentric wheel is fitted on the main shaft. The connecting rod is fitted on the eccentric wheel. When the main shaft rotates, it drives the eccentric wheel to rotate, which in turn drives the connecting rod to move.

[0003] Currently, the China Patent Network discloses an eccentric rotating device for an air compressor [Authorization Announcement No.: CN208268219U], which includes an eccentric device and two connecting rods mounted on the eccentric device. The eccentric device includes a connecting plate and two short cylinders, which are fixed to the left and right sides of the connecting plate and located at the upper and lower ends of the connecting plate, respectively. The two short cylinders have overlapping ends about the connecting plate, and fixing holes are opened on the overlapping ends, passing through the two short cylinders and the connecting plate. The center line of the fixing holes is perpendicular to the connecting plate. The connecting rods include an active connecting head, a driven connecting head, and a handle connecting the active connecting head and the driven connecting head. The active connecting head has an eccentric sleeve hole. The active connecting heads of the two connecting rods are respectively sleeved on the two short cylinders, and the driven connecting heads of the two connecting rods extend in two different directions.

[0004] The aforementioned eccentric rotating device has the following drawbacks: the eccentric device can only be fitted with two connecting rods, meaning that when applied to an air compressor, the eccentric rotating device can only drive two compression components to work, resulting in low working efficiency of the air compressor. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing an eccentric mechanism for an air compressor. The technical problem to be solved by this utility model is: how to improve the working efficiency of the air compressor and make the main shaft more balanced during operation.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An eccentric mechanism for an air compressor includes a main shaft, characterized in that an eccentric wheel 1, an eccentric wheel 2, an eccentric wheel 3, and an eccentric wheel 4 are mounted on one end of the main shaft. The eccentric wheels 1, 2, 3, and 4 are arranged arbitrarily along the axial direction of the main shaft. The eccentric wheel 2 is deflected relative to the eccentric wheel 1 around the main shaft by an angle ∠α, and 0°≤∠α≤180°. The eccentric wheel 3 is deflected 180° relative to the eccentric wheel 1 around the main shaft. The eccentric wheel 4 is deflected 180° relative to the eccentric wheel 2 around the main shaft.

[0008] In this structure, eccentric wheel one is used as the reference base. The angle difference between eccentric wheel three and eccentric wheel one is 180°, and the angle difference between eccentric wheel two and eccentric wheel four is 180°. This eccentric mechanism is assembled into an air compressor. Each eccentric wheel is fitted with a connecting rod. When the main shaft rotates, the two connecting rods fitted on eccentric wheel one and eccentric wheel three move synchronously, that is, they extend outward or retract inward at the same time. The strokes of the two connecting rods are the same. Similarly, the two connecting rods fitted on eccentric wheel two and eccentric wheel four also extend outward or retract inward at the same time. The strokes of the two connecting rods are the same. First, during the operation of the four connecting rods, the four opposing forces generated cancel each other out, significantly absorbing the shear force generated by the simultaneous operation of the four connecting rods. This indirectly weakens the shear force on the main bearing, optimizes the overall load-bearing logic, reduces the load on the main bearing, and extends the life of the mechanical structure. At the same time, the forces generated by each connecting rod cancel each other out and achieve balance, reducing the vibration and noise of the entire machine. Furthermore, the need for a counterweight on the main shaft to achieve force balance is eliminated, making the overall weight of the air compressor lighter. Second, after the main shaft rotates 360°, all four connecting rods complete their work, improving the working efficiency of the air compressor. In addition, the arrangement of the four eccentric wheels on the main shaft can be changed in any order according to the structural design of the air compressor, improving the flexibility of the position setting of the four eccentric wheels.

[0009] In the eccentric mechanism of the aforementioned air compressor, ∠α is 90°, and the centers of eccentric wheel one, eccentric wheel two, eccentric wheel three, and eccentric wheel four are all equidistant from the center of the main shaft. In this structure, eccentric wheels one, two, three, and four are arranged in a cross shape along the axial projection of the main shaft. Specifically, they are arranged in a cross shape. When the two connecting rods sleeved on eccentric wheels one and three extend outward to their limit positions, the two connecting rods sleeved on eccentric wheels two and four retract inward to their limit positions. After the main shaft continues to rotate 180°, the two connecting rods on eccentric wheels two and four extend outward to their limit positions, and the two connecting rods sleeved on eccentric wheels one and three retract inward to their limit positions. For every 180° rotation of the main shaft, the two connecting rods in the air compressor perform work once, which distributes the load borne by the motor evenly. This makes the upper limit of the motor load curve as close as possible to the lower limit of the no-load curve and makes it smoother, thus optimizing energy consumption and reducing motor vibration and noise.

[0010] In the eccentric mechanism of the aforementioned air compressor, the four eccentric distances of eccentric wheel one, eccentric wheel two, eccentric wheel three, and eccentric wheel four are all different or any two are the same.

[0011] In the eccentric mechanism of the aforementioned air compressor, eccentric wheels one, two, three, and four are all independently and separately arranged. This structure allows eccentric wheels one, two, three, and four to be assembled onto the main shaft one by one.

[0012] In the eccentric mechanism of the aforementioned air compressor, eccentric wheel one, eccentric wheel three, eccentric wheel two and eccentric wheel four are arranged sequentially along the axial direction of the main shaft.

[0013] In the eccentric mechanism of the aforementioned air compressor, the eccentric wheel three and the eccentric wheel two are integrally formed, while the eccentric wheel one and the eccentric wheel four are independently and separately arranged.

[0014] In the eccentric mechanism of the aforementioned air compressor, eccentric wheel one, eccentric wheel three, eccentric wheel four and eccentric wheel two are arranged sequentially along the axial direction of the main shaft.

[0015] In the eccentric mechanism of the aforementioned air compressor, eccentric wheel one and eccentric wheel three are integrally formed, and eccentric wheel two and eccentric wheel four are integrally formed.

[0016] In the eccentric mechanism of the aforementioned air compressor, the eccentric wheel three and the eccentric wheel four are integrally formed, while the eccentric wheel one and the eccentric wheel two are independently and separately arranged.

[0017] In the eccentric mechanism of the aforementioned air compressor, eccentric wheel one, eccentric wheel three, eccentric wheel two and eccentric wheel four are integrally formed.

[0018] Compared with existing technologies, the eccentric mechanism of the air compressor of this utility model has the following advantages: This structure allows the four opposing forces generated during the operation of the four connecting rods to cancel each other out, significantly absorbing the shear force generated by the simultaneous operation of the four connecting rods. This indirectly weakens the shear force on the main bearing, optimizes the overall load-bearing logic, reduces the load on the main bearing, and extends the lifespan of the mechanical structure. Simultaneously, the forces generated by each connecting rod during operation cancel each other out and achieve balance, reducing vibration and noise during operation. Furthermore, the need for a counterweight on the main shaft eliminates the need for force balance, making the overall weight of the air compressor lighter. Secondly, after the main shaft rotates 360°, all four connecting rods complete their work, improving the working efficiency of the air compressor. In addition, the arrangement of the four eccentric wheels on the main shaft can be changed in any order according to the structural design of the air compressor, improving the flexibility of the eccentric wheel position setting. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the four eccentric wheels in Embodiment 1 of this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the four eccentric wheels in Embodiment 1 of this utility model.

[0022] Figure 4 This is a three-dimensional structural diagram of Embodiment 2 of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the four eccentric wheels in Embodiment 2 of this utility model.

[0024] In the diagram, 1 is the main shaft; 2 is eccentric wheel one; 3 is eccentric wheel two; 4 is eccentric wheel three; and 5 is eccentric wheel four. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the eccentric mechanism of this air compressor includes a main shaft 1. One end of the main shaft 1 is fitted with eccentric wheels 2, 3, 4, and 5. These eccentric wheels are arranged arbitrarily along the axial direction of the main shaft 1. The centers of eccentric wheels 2, 3, 4, and 5 are all equidistant from the center of the main shaft 1. Eccentric wheel 3 is deflected relative to eccentric wheel 2 around the main shaft 1 by an angle ∠α, where 0°≤∠α≤180°. Eccentric wheel 4 is deflected 180° relative to eccentric wheel 2 around the main shaft 1, and eccentric wheel 5 is deflected 180° relative to eccentric wheel 3 around the main shaft 1. In this embodiment, ∠α is 90°. Figure 2 As shown, the thick dashed line is the center line of eccentric wheel 2, and the thin dashed line is the center line of eccentric wheel 3. Eccentric wheels 2, 3, 4 and 5 are arranged in a cross shape along the axial projection of the main shaft 1.

[0027] In this structure, eccentric wheel 12 is used as the reference base. The angle difference between eccentric wheel 32 and eccentric wheel 12 is 180°, and the angle difference between eccentric wheel 23 and eccentric wheel 45 is 180°. This eccentric mechanism is used in an air compressor. Each eccentric wheel is fitted with a connecting rod. When the main shaft 1 rotates, the two connecting rods fitted on eccentric wheel 12 and eccentric wheel 34 move synchronously, that is, they extend outward or retract inward at the same time. The strokes of the two connecting rods are the same. Similarly, the two connecting rods fitted on eccentric wheel 23 and eccentric wheel 45 also extend outward or retract inward at the same time. The strokes of the two connecting rods are the same. First, during the operation of the four connecting rods, the four opposing forces generated cancel each other out, significantly absorbing the shear force generated by the simultaneous operation of the four connecting rods. This indirectly weakens the shear force borne by the connecting rods on the main shaft 1, optimizes the overall load-bearing logic of the machine, reduces the load on the main shaft 1, and extends the life of the mechanical structure. At the same time, the forces generated by each connecting rod during operation cancel each other out and achieve balance, which also reduces the vibration and noise of the entire machine during operation. Furthermore, the counterweight on the main shaft 1 is eliminated, eliminating the need for a counterweight to achieve force balance, making the overall weight of the air compressor lighter. Second, after the main shaft 1 rotates 360°, all four connecting rods complete their work, improving the working efficiency of the air compressor. In addition, the arrangement of the four eccentric wheels on the main shaft 1 can be changed in any order according to the structural design of the air compressor, improving the flexibility of the position setting of the four eccentric wheels.

[0028] Eccentric wheels 1 (2), 3 (4), 2 (3), and 4 (5) are arranged sequentially along the axial direction of the main shaft 1. Eccentric wheels 1 (2) and 3 (4) are integrally formed, as are 2 (3) and 4 (5). This structure integrates four eccentric wheels into two components. The integral casting structure simplifies manufacturing and facilitates assembly with the main shaft. Example

[0029] In this embodiment, as Figure 4 and Figure 5 As shown, eccentric wheel 1 (2), eccentric wheel 2 (3), eccentric wheel 3 (4), and eccentric wheel 4 (5) are all set independently. Example

[0030] In this embodiment, eccentric wheels 1 (2), 3 (4), 2 (3), and 4 (5) are arranged sequentially along the axial direction of the main shaft 1. Eccentric wheels 3 (4) and 2 (3) are integrally formed, while eccentric wheels 1 (2) and 4 (5) are independently arranged. The position of each eccentric wheel can be flexibly set according to the structure of the air compressor. Example

[0031] In this embodiment, eccentric wheels 1 (2), 3 (4), 4 (5), and 2 (3) are arranged sequentially along the axial direction of the main shaft 1. Eccentric wheels 3 (4) and 4 (5) are integrally formed, while eccentric wheels 1 (2) and 2 (3) are independently and separately formed. This structure uses the two middle eccentric wheels as integrally formed. Example

[0032] In this embodiment, eccentric wheel 1 (2), eccentric wheel 3 (4), eccentric wheel 4 (3), and eccentric wheel 5 (5) are integrally formed. The integrally formed structure of the four eccentric wheels facilitates one-time assembly on the spindle, improving the convenience of assembly with the spindle. Example

[0033] In this embodiment, the four eccentric distances of eccentric wheel 1 2, eccentric wheel 2 3, eccentric wheel 3 4 and eccentric wheel 4 5 are all different or any two are the same.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An eccentric mechanism of an air compressor including a main shaft (1), characterized in that, One end of the main shaft (1) is sleeved with eccentric wheel one (2), eccentric wheel two (3), eccentric wheel three (4) and eccentric wheel four (5), the eccentric wheel one (2), eccentric wheel two (3), eccentric wheel three (4) and eccentric wheel four (5) are arranged in any order along the axial direction of the main shaft (1), the eccentric wheel two (3) is deflected by an angle ∠α around the main shaft (1) relative to the eccentric wheel one (2) and 0°≤∠α≤180°, the eccentric wheel three (4) is deflected by 180° around the main shaft (1) relative to the eccentric wheel one (2), the eccentric wheel four (5) is deflected by 180° around the main shaft (1) relative to the eccentric wheel two (3).

2. The eccentric mechanism of claim 1, wherein The ∠α is 90°, the center of the eccentric wheel one (2), the center of the eccentric wheel two (3), the center of the eccentric wheel three (4) and the center of the eccentric wheel four (5) are equidistant from the center of the main shaft (1).

3. The eccentric mechanism of claim 1, wherein The four eccentric distances of the eccentric wheel one (2), the eccentric wheel two (3), the eccentric wheel three (4) and the eccentric wheel four (5) are not all the same or any two are the same.

4. The eccentric mechanism of claim 1, wherein The eccentric wheel one (2), the eccentric wheel two (3), the eccentric wheel three (4) and the eccentric wheel four (5) are independently arranged.

5. The eccentric mechanism of claim 1, wherein The eccentric wheel one (2), the eccentric wheel three (4), the eccentric wheel two (3) and the eccentric wheel four (5) are arranged in sequence along the axial direction of the main shaft (1).

6. The eccentric mechanism of claim 5, wherein The eccentric wheel three (4) and the eccentric wheel two (3) are integrally formed, and the eccentric wheel one (2) and the eccentric wheel four (5) are independently arranged.

7. The eccentric mechanism of claim 1, wherein The eccentric wheel one (2), the eccentric wheel three (4), the eccentric wheel four (5) and the eccentric wheel two (3) are arranged in sequence along the axial direction of the main shaft (1).

8. The eccentric mechanism of claim 1 or 5 or 7, wherein, The eccentric wheel one (2) and the eccentric wheel three (4) are integrally formed, and the eccentric wheel two (3) and the eccentric wheel four (5) are integrally formed.

9. The eccentric mechanism of claim 1 or 5 or 7, wherein, The eccentric wheel one (2), the eccentric wheel three (4), the eccentric wheel two (3) and the eccentric wheel four (5) are integrally formed.

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