High-strength vortex air compressor crankshaft

Abstract

The utility model discloses a high-strength vortex air compressor crankshaft which comprises a first shaft body, a second shaft body, a third shaft body and a first connecting shaft, the first shaft body, the second shaft body and the third shaft body are all of a cylindrical structure, the diameter of the second shaft body is larger than that of the first shaft body, and the first connecting shaft is of a circular truncated cone structure. The first connecting shaft is located between the first shaft body and the second shaft body, the small-diameter end of the first connecting shaft is coaxially connected with one end of the first shaft body, and the large-diameter end of the first connecting shaft is coaxially connected with one end of the second shaft body. The other end of the second shaft body is connected with one end of the third shaft body, and the diameter of the second shaft body is smaller than that of the third shaft body. The crankshaft solves the technical problem that the strength of the crankshaft body is low in a small operation space, and achieves the technical effects of improving the strength of the crankshaft body and guaranteeing stable operation of the crankshaft.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor crankshafts, in particular to a high-strength scroll air compressor crankshaft. Background Art

[0002] The compressor is the core component of the refrigeration system, and its working efficiency directly affects the performance of the refrigeration system. When the compressor is working, the motor drives the crankshaft to rotate, and the rotating crankshaft drives the connecting rod to reciprocate, and the reciprocating connecting rod pushes the piston to compress the gas.

[0003] In the prior art, in order to adapt to a working environment with limited space, the crankshaft is reduced in diameter or subjected to a stepped shaft treatment. This treatment method affects the strength of the shaft, resulting in poor crankshaft operation stability. Utility Model Content

[0004] The present application provides a high-strength scroll air compressor crankshaft, which is used to solve the technical problem of low crankshaft strength in a smaller operating space.

[0005] The present application provides a high-strength scroll air compressor crankshaft, comprising: a first shaft body, a second shaft body, a third shaft body and a first connecting shaft, wherein the first shaft body, the second shaft body and the third shaft body are all cylindrical structures, the diameter of the second shaft body is larger than the diameter of the first shaft body, the first connecting shaft is a truncated cone structure, the first connecting shaft is located between the first shaft body and the second shaft body, the end with a smaller diameter of the first connecting shaft is coaxially connected to one end of the first shaft body, and the end with a larger diameter of the first connecting shaft is coaxially connected to one end of the second shaft body; the other end of the second shaft body is connected to one end of the third shaft body, and the diameter of the second shaft body is smaller than that of the third shaft body.

[0006] By adopting the above technical solution, a first connecting shaft with a truncated cone structure is set between the first shaft body and the second shaft body, avoiding a stepped connection result at the position where the shaft body diameter is smaller, ensuring the connection strength between the shaft bodies with diameter differences, and ensuring the stability of the shaft body operation.

[0007] Preferably, the crankshaft also includes a second connecting shaft and an eccentric shaft, and both ends of the second connecting shaft are respectively connected to the other end of the third shaft body and one end of the eccentric shaft; the diameter of the second connecting shaft is larger than the diameter of the third shaft body, the diameter of the eccentric shaft is the same as the diameter of the third shaft body, the second connecting shaft is coaxially arranged with the third shaft body, and the end face where the eccentric shaft and the second connecting shaft are connected is inscribed in the end face of the second connecting shaft.

[0008] By adopting the above technical solution, a second connecting shaft and an eccentric shaft are set at one end of the third shaft body, and a second connecting shaft is set between the eccentric shaft and the third shaft body, so as to avoid the generation of a deviation step structure at the connection between the eccentric shaft and the shaft body, ensure the strength of the shaft body, and guarantee the stability of the shaft body operation.

[0009] Preferably, the peripheral walls of the first shaft body, the second shaft body, the third shaft body and the first connecting shaft are provided with continuous spiral oil grooves.

[0010] By adopting the above technical solution, a spiral oil groove is set on the surface of the crankshaft, which ensures the lubrication effect of the shaft during the operation of the shaft, reduces the loss caused by the operation of the shaft, and extends the service life of the shaft.

[0011] Preferably, a first oil outlet hole is provided on the first shaft body, a second oil outlet hole is provided on the third shaft body, and the first oil outlet hole and the second oil outlet hole are both located in the spiral oil groove, and a through hole sequentially penetrates the eccentric shaft, the second connecting shaft, the third shaft body, the second shaft body, the first connecting shaft and the first shaft body, and the first oil outlet hole and the second oil outlet hole are both connected to the through hole.

[0012] By adopting the above technical solution, a through hole is set on the axis of the shaft body, and a first oil outlet hole and a second oil outlet hole are set in the spiral oil groove of the shaft body of the first shaft body and the third shaft body, thereby ensuring the lubrication effect of the shaft body during operation, reducing the loss caused by the operation of the shaft body, and extending the service life of the shaft body.

[0013] Preferably, the through hole in the eccentric shaft passes through the center of the end surface of the eccentric shaft and is arranged obliquely at an angle to the axis of the crankshaft body.

[0014] By adopting the above technical solution, an oblique through hole is set in the eccentric shaft, and the lubrication efficiency of the lubricating oil is improved by utilizing the centrifugal force generated when the crankshaft is running, thereby reducing the loss generated when the crankshaft is running and increasing the service life of the crankshaft.

[0015] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0016] 1. By setting a first connecting shaft with a truncated cone structure between the first shaft body and the second shaft body, a step-like connection result is avoided at the position where the shaft body diameter is small, thereby ensuring the connection strength between the shaft bodies with different diameters and guaranteeing the stability of the shaft body operation;

[0017] 2. By setting a connecting shaft at the connection of the shaft body, the deviation of the step-like structure at the connection of the shaft body is avoided, the strength of the shaft body is ensured, and the stability of the shaft body operation is guaranteed;

[0018] 3. By arranging a spiral oil groove on the surface of the crankshaft, arranging a through hole on the axis of the shaft body, and arranging a first oil outlet hole and a second oil outlet hole in the spiral oil groove of the shaft body of the first shaft body and the third shaft body, the lubrication effect of the shaft body during the operation of the shaft body is ensured, the loss caused by the operation of the shaft body is reduced, and the service life of the shaft body is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 An axonometric view of a high-strength scroll air compressor crankshaft provided in the present application;

[0021] Figure 2 A top view of a high-strength scroll air compressor crankshaft provided in the present application;

[0022] Figure 3 A front view of a high-strength scroll air compressor crankshaft provided in the present application;

[0023] Figure 4 A rear view of a high-strength scroll air compressor crankshaft provided in the present application;

[0024] Figure 5 A cross-sectional view of a high-strength scroll air compressor crankshaft provided in the present application.

[0025] Explanation of the reference numerals: 1. first shaft body; 11. first oil outlet hole; 2. second shaft body; 3. third shaft body; 31. second oil outlet hole; 41. first connecting shaft; 42. second connecting shaft; 43. eccentric shaft; 5. spiral oil groove; 51. through hole. DETAILED DESCRIPTION

[0026] The present application provides a high-strength scroll air compressor crankshaft, which is used to solve the technical problem of low crankshaft shaft strength in a small operating space in the prior art.

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products, or devices.

[0029] like Figures 1 to 5 The embodiment of the present application shown provides a high-strength scroll air compressor crankshaft, and the crankshaft body includes: a first shaft body 1, a second shaft body 2, a third shaft body 3 and a first connecting shaft 41. The first shaft body 1, the second shaft body 2 and the third shaft body 3 are all cylindrical structures. The diameter of the second shaft body 2 is larger than the diameter of the first shaft body 1. The first connecting shaft 41 is a truncated cone structure. The first connecting shaft 41 is located between the first shaft body 1 and the second shaft body 2. The end of the first connecting shaft 41 with a smaller diameter is coaxially connected to one end of the first shaft body 1, and the end of the first connecting shaft 41 with a larger diameter is coaxially connected to one end of the second shaft body 2; the other end of the second shaft body 2 is connected to one end of the third shaft body 3, and the second shaft body 2 is smaller than the diameter of the third shaft body 3.

[0030] More preferably, in the embodiment provided in the present application, the diameter of the first shaft body 1 is 30 mm, the diameter of the second shaft body 2 is 32 mm, the cross-sectional diameter of the connection between the first connecting shaft 41 and the first shaft body 1 is 30 mm, the cross-sectional diameter of the connection between the first connecting shaft 41 and the second shaft body 2 is 32 mm, the first connecting shaft 41 is a truncated cone structure as a whole, and the diameter of the third shaft body 3 is 40 mm.

[0031] In this embodiment, a first connecting shaft 41 with a truncated cone structure is provided between the first shaft body 1 and the second shaft body 2 to avoid a stepped connection at positions where the shaft body diameters are smaller, thereby ensuring the connection strength between the shaft bodies with diameter differences and guaranteeing the stability of the shaft body operation.

[0032] like Figures 1 to 5The embodiment of the present application shown provides a high-strength scroll air compressor crankshaft, wherein the crankshaft also includes a second connecting shaft 42 and an eccentric shaft 43, and the two ends of the second connecting shaft 42 are respectively connected to the other end of the third shaft body 3 and one end of the eccentric shaft 43; the diameter of the second connecting shaft 42 is larger than the diameter of the third shaft body 3, the diameter of the eccentric shaft 43 is the same as the diameter of the third shaft body 3, the second connecting shaft 42 is coaxially arranged with the third shaft body 3, and the end face where the eccentric shaft 43 and the second connecting shaft 42 are connected is inscribed in the end face of the second connecting shaft 42.

[0033] More preferably, in the embodiment provided in the present application, the second connecting shaft 42 is arranged at the end of the third shaft body 3 that is not connected to the second shaft body 2, the eccentric shaft 43 is arranged at the other end of the second connecting shaft 42, and the cross-sectional circle of the eccentric shaft 43 is inscribed in the cross-sectional circle of the second connecting shaft 42, the diameter of the second connecting shaft 42 is 55 mm, and the diameter of the eccentric shaft 43 is 40 mm.

[0034] In this embodiment, by setting a second connecting shaft and an eccentric shaft at one end of the third shaft body, and setting a second connecting shaft between the eccentric shaft and the third shaft body, a deviation step structure is avoided at the connection between the eccentric shaft and the shaft body, thereby ensuring the strength of the shaft body and the stability of the shaft body operation.

[0035] like Figures 1 to 5 The embodiment of the present application shown provides a high-strength scroll air compressor crankshaft, including: a first shaft body 1, a second shaft body 2, a third shaft body 3 and a first connecting shaft 41, and the shaft body peripheral walls are provided with a continuous spiral oil groove 5.

[0036] More preferably, in the embodiment provided in the present application, a spiral oil groove 5 is provided on the surface of the crankshaft shaft except the eccentric shaft 43 and the second connecting shaft 42 , and the spiral oil groove 5 extends from the lower surface of the first shaft body 1 to the upper surface of the third shaft body 3 .

[0037] In this embodiment, by providing a spiral oil groove 5 on the crankshaft surface, the lubrication effect of the shaft during the operation of the shaft is ensured, the loss caused by the operation of the shaft is reduced, and the service life of the shaft is extended.

[0038] like Figures 1 to 5 The embodiment of the present application shown provides a high-strength scroll air compressor crankshaft, including: a first oil outlet hole 11 is provided on the first shaft body 1, a second oil outlet hole 31 is provided on the third shaft body 3, and the first oil outlet hole 11 and the second oil outlet hole 31 are both located in the spiral oil groove 5, a through hole 51 sequentially penetrates the eccentric shaft 43, the second connecting shaft 42, the third shaft body 3, the second shaft body 2, the first connecting shaft 41 and the first shaft body 1, and the first oil outlet hole 11 and the second oil outlet hole 31 are both connected to the through hole 51.

[0039] More preferably, in the embodiment provided in the present application, a through hole 51 is provided on the axis of the crankshaft, and the through hole 51 runs through the entire crankshaft, and the spiral oil groove 5 on the surface of the first shaft body 1 and the third shaft body 3 is provided with a first oil outlet hole 11 and a second oil outlet hole 31 connected to the through hole 51.

[0040] In this embodiment, a through hole is set on the axis of the shaft body, and a first oil outlet hole and a second oil outlet hole are set in the spiral oil groove of the shaft body of the first shaft body and the third shaft body, thereby ensuring the lubrication effect of the shaft body during operation, reducing the loss caused by the operation of the shaft body, and extending the service life of the shaft body.

[0041] like Figures 1 to 5 The embodiment of the present application shown provides a high-strength scroll air compressor crankshaft, including: a through hole 51 in the eccentric shaft 43 passes through the center of the end surface of the eccentric shaft 43 and is arranged obliquely at an angle to the axis of the crankshaft body.

[0042] More preferably, in the embodiment provided in the present application, the through hole 51 in the crankshaft body passes through the eccentric shaft 43, the second connecting shaft 42, the third shaft body 3, the second shaft body 2, the first connecting shaft 41 and the first shaft body 1 in sequence along the axis of the crankshaft body, and the through hole 51 in the eccentric shaft 43 passes through the center position of the second connecting shaft 42 and the center position of the end face of the eccentric shaft 43, and the through hole 51 in the eccentric shaft 43 is obliquely arranged at an angle to the axis of the crankshaft body.

[0043] In this embodiment, by providing an oblique through hole 51 in the eccentric shaft 43, the lubrication efficiency of the lubricating oil is improved by utilizing the centrifugal force generated during the operation of the crankshaft, thereby reducing the loss generated during the operation of the crankshaft and increasing the service life of the crankshaft.

[0044] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description and does not represent the advantages and disadvantages of the embodiments. And the above-mentioned specific embodiments of this specification are described. Other embodiments are within the scope of the attached claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0045] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

[0046] This specification and drawings are merely exemplary illustrations of the present application and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, a person skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the present application and its equivalents, the present application intends to include these modifications and variations.

Claims

1. A high-strength scroll air compressor crankshaft, characterized in that: include: A crankshaft body, the crankshaft body comprising a first shaft body (1), a second shaft body (2), a third shaft body (3) and a first connecting shaft (41); the first shaft body (1), the second shaft body (2) and the third shaft body (3) are all cylindrical structures; the diameter of the second shaft body (2) is greater than the diameter of the first shaft body (1); the first connecting shaft (41) is a truncated cone structure; the first connecting shaft (41) is located between the first shaft body (1) and the second shaft body (2); the end of the first connecting shaft (41) with a smaller diameter is coaxially connected to one end of the first shaft body (1); and the end of the first connecting shaft (41) with a larger diameter is coaxially connected to one end of the second shaft body (2); The other end of the second shaft body (2) is connected to one end of the third shaft body (3), and the diameter of the second shaft body (2) is smaller than that of the third shaft body (3).

2. A high-strength scroll air compressor crankshaft as claimed in claim 1, characterized in that: The crankshaft also includes a second connecting shaft (42) and an eccentric shaft (43), wherein two ends of the second connecting shaft (42) are respectively connected to the other end of the third shaft body (3) and one end of the eccentric shaft (43); The diameter of the second connecting shaft (42) is greater than the diameter of the third shaft body (3), the diameter of the eccentric shaft (43) is the same as the diameter of the third shaft body (3), the second connecting shaft (42) and the third shaft body (3) are coaxially arranged, and the end surface at which the eccentric shaft (43) and the second connecting shaft (42) are connected is inscribed in the end surface of the second connecting shaft (42).

3. A high-strength scroll air compressor crankshaft as claimed in claim 2, characterized in that: Continuous spiral oil grooves (5) are provided on the peripheral walls of the first shaft body (1), the second shaft body (2), the third shaft body (3) and the first connecting shaft (41).

4. A high-strength scroll air compressor crankshaft as claimed in claim 3, characterized in that: The first shaft body (1) is provided with a first oil outlet hole (11), the third shaft body (3) is provided with a second oil outlet hole (31), and the first oil outlet hole (11) and the second oil outlet hole (31) are both located in the spiral oil groove (5), a through hole (51) sequentially penetrates the eccentric shaft (43), the second connecting shaft (42), the third shaft body (3), the second shaft body (2), the first connecting shaft (41) and the first shaft body (1), and the first oil outlet hole (11) and the second oil outlet hole (31) are both connected to the through hole (51).

5. A high-strength scroll air compressor crankshaft as claimed in claim 4, characterized in that: The through hole (51) in the eccentric shaft (43) passes through the center of the end surface of the eccentric shaft (43) and is arranged obliquely at an angle to the axis of the crankshaft body.

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