Assembly structure of compressor crankshaft

Abstract

The utility model discloses an assembling structure of a compressor crankshaft, which comprises a shaft body component. Comprising a crankshaft shell, a large bearing hole formed in one end of the crankshaft shell, a small bearing hole formed in the other end of the crankshaft shell, a first flexible ring fixed in the large bearing hole, and a main bearing with one end fixed in the small bearing hole and the other end fixed in the first flexible ring, the crankshaft main shaft is fixed in the main bearing; the crankshaft auxiliary shaft is fixed on the crankshaft main shaft; the end cover assembly comprises a rear end cover fixed to one end of the crankshaft shell, an auxiliary bearing fixed in the rear end cover, a front end cover installed at the other end of the crankshaft shell and a rotor installed on the front end cover and connected to the crankshaft main shaft. The main bearing can rotate in the first flexible ring, so that the first flexible ring and the second flexible ring are slightly deformed, and the abrasion to the large bearing hole is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor crankshafts, and specifically relates to an assembly structure of a compressor crankshaft. Background Art

[0002] Rotary compressors are divided into two major categories, vertical and horizontal, according to the fixing method of their working states. Among them, for horizontal rotary compressors, due to the limitations of internal structural components, the main weight of the pump body is concentrated on the crankshaft and the shaft holes of the crankshaft housing. The shaft holes on the crankshaft and the crankshaft housing serve as the support points and stress points of the entire pump body, with large and concentrated stress, and they wear quickly during the operation of the compressor, which is not conducive to the long-term use of the compressor. Summary of the Utility Model

[0003] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract, and the title of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above and / or problems existing in an existing assembly structure of a compressor crankshaft, the present utility model is proposed.

[0005] Therefore, the purpose of the present utility model is to provide an assembly structure of a compressor crankshaft. When the main shaft of the crankshaft rotates during the use of this device, it will drive the secondary shaft of the crankshaft to rotate synchronously at the secondary bearing, and the main bearing will rotate within the first flexible ring, causing both the first flexible ring and the second flexible ring to undergo slight deformation, thereby reducing the wear on the large bearing hole. Among them, the first deformation groove, the second deformation groove, and the elastic ring can all deform, thereby reducing the wear on the crankshaft housing.

[0006] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0007] An assembly structure of a compressor crankshaft, which includes:

[0008] A shaft body assembly, including a crankshaft housing, a large bearing hole opened at one end of the crankshaft housing, a small bearing hole opened at the other end of the crankshaft housing, a first flexible ring fixed in the large bearing hole, a main bearing with one end fixed in the small bearing hole and the other end fixed in the first flexible ring, a crankshaft main shaft fixed in the main bearing, and a crankshaft secondary shaft fixed on the crankshaft main shaft;

[0009] The end cover assembly includes a rear end cover fixed to one end of the crankshaft housing, a sub-bearing fixed inside the rear end cover, a front end cover installed at the other end of the crankshaft housing, and a rotor installed on the front end cover and connected to the crankshaft main shaft.

[0010] As a preferred solution of an assembly structure of a compressor crankshaft according to the present utility model, a second flexible ring is fixed on the front end cover, and the crankshaft main shaft passes through the central hole of the second flexible ring.

[0011] As a preferred solution of an assembly structure of a compressor crankshaft according to the present utility model, a connecting ring is fixed on the outer wall of the second flexible ring, and the connecting ring is fixedly connected to both the crankshaft housing and the front end cover.

[0012] As a preferred solution of an assembly structure of a compressor crankshaft according to the present utility model, first deformation grooves are evenly formed on the first flexible ring, and a second deformation groove is formed on the second flexible ring.

[0013] As a preferred solution of an assembly structure of a compressor crankshaft according to the present utility model, an installation groove is formed inside the second flexible ring, and an elastic ring is installed in the installation groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: when the device is in use, when the crankshaft main shaft rotates, it will drive the crankshaft sub-shaft to rotate synchronously at the sub-bearing, and the main bearing will rotate inside the first flexible ring, causing both the first flexible ring and the second flexible ring to deform slightly, thereby reducing the wear on the large bearing hole; among them, the first deformation groove, the second deformation groove and the elastic ring can all deform, thereby reducing the wear on the crankshaft housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of an assembly structure of a compressor crankshaft according to the present utility model;

[0017] Figure 2 It is a sectional view of the structure of an assembly structure of a compressor crankshaft according to the present utility model;

[0018] Figure 3 It is an assembly structure of a compressor crankshaft according to the present utility model Figure 2Partial enlarged view of A;

[0019] Figure 4 For an assembly structure of a compressor crankshaft of the present utility model Figure 2 Partial enlarged view of B. Specific embodiments

[0020] To make the above objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0021] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0022] To make the purpose, technical solution and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] The present utility model provides an assembly structure of a compressor crankshaft. When using this device, when the main shaft of the crankshaft rotates, it will drive the auxiliary shaft of the crankshaft to rotate synchronously at the auxiliary bearing, and the main bearing will rotate within the first flexible ring, causing both the first flexible ring and the second flexible ring to deform slightly, thereby reducing the wear on the large bearing hole; among them, the first deformation groove, the second deformation groove and the elastic ring can all deform, thereby reducing the wear on the crankshaft housing.

[0024] Figures 1-4 Shown is a schematic diagram of the overall structure of an embodiment of an assembly structure of a compressor crankshaft of the present utility model. Please refer to Figures 1-4 An assembly structure of a compressor crankshaft in this embodiment, its main body part includes a shaft body assembly 100 and an end cover assembly 200.

[0025] The shaft body assembly 100 includes a crankshaft housing 110, a large bearing hole 110a opened at one end of the crankshaft housing 110, a small bearing hole 110b opened at the other end of the crankshaft housing 110, a first flexible ring 120 fixed in the large bearing hole 110a, a main bearing 130 with one end fixed in the small bearing hole 110b and the other end fixed in the first flexible ring 120, a crankshaft main shaft 140 fixed in the main bearing 130, and a crankshaft auxiliary shaft 150 fixed on the crankshaft main shaft 140;

[0026] The end cover assembly 200 includes a rear end cover 210 fixed to one end of the crankshaft housing 110, a secondary bearing 220 fixed within the rear end cover 210, a front end cover 230 mounted at the other end of the crankshaft housing 110, and a rotor 240 mounted on the front end cover 230 and connected to the crankshaft main shaft 140; a second flexible ring 250 is fixed to the front end cover 230, and the crankshaft main shaft 140 passes through the central hole of the second flexible ring 250; a connecting ring 250a is fixed to the outer wall of the second flexible ring 250, and the connecting ring 250a is fixedly connected to both the crankshaft housing 110 and the front end cover 230; first deformation grooves 120a are uniformly formed in the first flexible ring 120, and a second deformation groove 250b is formed in the second flexible ring 250; an installation groove is formed inside the second flexible ring 250, and an elastic ring 250c is installed in the installation groove.

[0027] Combined Figures 1-4 , an assembly structure of a compressor crankshaft according to this embodiment is specifically used as follows: When using this device, when the crankshaft main shaft 140 rotates, it will drive the crankshaft secondary shaft 150 to rotate synchronously at the secondary bearing 220, and the main bearing 130 will rotate within the first flexible ring 120, causing both the first flexible ring 120 and the second flexible ring 250 to deform slightly, thereby reducing the wear on the large bearing hole 110a; among them, the first deformation groove 120a, the second deformation groove 250b, and the elastic ring 250c can all deform, thereby reducing the wear on the crankshaft housing 110.

[0028] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be combined with each other in any way, and the cases of these combinations are not exhaustively described in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An assembly structure of a compressor crankshaft, characterized in that, Comprising: A shaft body assembly (100), including a crankshaft housing (110), a large bearing hole (110a) opened at one end of the crankshaft housing (110), a small bearing hole (110b) opened at the other end of the crankshaft housing (110), a first flexible ring (120) fixed in the large bearing hole (110a), a main bearing (130) with one end fixed in the small bearing hole (110b) and the other end fixed in the first flexible ring (120), a crankshaft main shaft (140) fixed in the main bearing (130), and a crankshaft auxiliary shaft (150) fixed on the crankshaft main shaft (140); An end cover assembly (200), including a rear end cover (210) fixed at one end of the crankshaft housing (110), a sub-bearing (220) fixed in the rear end cover (210), a front end cover (230) installed at the other end of the crankshaft housing (110), and a rotor (240) installed on the front end cover (230) and connected to the crankshaft main shaft (140).

2. The assembly structure of a compressor crankshaft according to claim 1, characterized in that, A second flexible ring (250) is fixed on the front end cover (230), and the crankshaft main shaft (140) passes through the central hole of the second flexible ring (250).

3. The assembly structure of a compressor crankshaft according to claim 2, characterized in that, A connecting ring (250a) is fixed on the outer wall of the second flexible ring (250), and the connecting ring (250a) is fixedly connected to both the crankshaft housing (110) and the front end cover (230).

4. The assembly structure of a compressor crankshaft according to claim 2, wherein, First deformation grooves (120a) are uniformly opened on the first flexible ring (120), and a second deformation groove (250b) is opened on the second flexible ring (250).

5. The assembly structure of a compressor crankshaft according to claim 2, characterized in that, An installation groove is opened inside the second flexible ring (250), and an elastic ring (250c) is installed in the installation groove.

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