A crankshaft structure
By designing a new type of machine shaft structure, including specific flat head, conical table, convex shaft and concave table design, as well as hardened layer treatment, the problems of difficult processing and complex design of existing organic shaft structures are solved, achieving more efficient production and better product performance.
Patent Information
- Application Number
- CN202421635528.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The design of the shaft structure in the existing one-way device has problems such as difficult processing and complex design, which affects production efficiency and product quality.
A new type of machine shaft structure is designed, including machine shaft main body, flat head, conical table, convex shaft and concave table. The design of involute splines is abandoned, a specific assembly structure is adopted to control the shaft degree, and a hardened layer is provided on the surface of machine shaft main body to improve wear resistance.
Through the design of this new machine shaft structure, processing difficulty is reduced, production efficiency and product quality are improved, while better shaft control and wear resistance are achieved.
Smart Images
Figure CN222702359U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of isolator parts, in particular to a crankshaft structure. Background Art
[0002] One-way devices are widely used in the automotive industry. For example, a one-way device is installed in the starting device of a car. It is a relatively mature product in the existing technology and is a device that transmits the power of the car engine to the axle in the form of a switch.
[0003] As a one-way device processing technology enterprise, our company has designed various types of structures. For example, on March 22, 2021, we applied for "A wear-resistant one-way device rotating shaft", and on August 9, 2022, we designed "A one-way device hollow drive shaft". We designed a completely different shaft structure and specially applied for this invention. Utility Model Content
[0004] In order to solve the above-mentioned problems in the prior art, the utility model provides a crankshaft structure, which can improve the above-mentioned deficiencies.
[0005] The utility model relates to a machine shaft structure, comprising a machine shaft main body, a through hole is arranged on the machine shaft main body, a flat head is arranged at one end of the machine shaft main body, a conical platform is arranged between the flat head and the machine shaft main body, a convex shaft is arranged at the other end of the machine shaft main body, and concave platforms are provided on both sides of the convex shaft and extend along the machine shaft axis direction and are perpendicular to the flat head.
[0006] Furthermore, a first inner cavity is arranged at one end of the shaft body away from the flat head, a second inner cavity is arranged inside the first inner cavity, a conical inner bottom cavity is arranged inside the second inner cavity, the inner diameter of the first inner cavity is larger than that of the second inner cavity, and an outer expansion cavity is symmetrically arranged on the inner wall of the second inner cavity.
[0007] Furthermore, a conical section is provided at the opening surface of the first inner cavity.
[0008] Furthermore, a rounded corner structure is provided at the corner position of the flat head.
[0009] Furthermore, a hardened layer is provided on the surface of the main body of the shaft.
[0010] The utility model designs a new type of central shaft structure, which is a brand-new design. A flat head is arranged at one end of the machine shaft body, a conical platform is arranged between the flat head and the machine shaft body, a convex shaft is arranged at the other end of the machine shaft body, and concave platforms are arranged on both sides of the convex shaft, extending along the axis direction of the machine shaft and being perpendicular to the flat head. The design of involute spline is abandoned, so that processing is easier and the difficulty is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the utility model.
[0012] Figure 2 It is a cross-sectional schematic diagram of the utility model.
[0013] Figure 3 It is a schematic diagram of the end structure of the machine shaft.
[0014] Illustration: 1 shaft body, 2 perforation, 3 flat head, 31 conical platform, 4 convex shaft, 5 first inner cavity, 51 conical section, 6 second inner cavity, 61 external expansion cavity, 7 conical inner bottom cavity. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0016] like Figure 1-3 As shown, the utility model relates to a crankshaft structure, including a crankshaft body 1, which is made of 30CrMo, a through hole 2 is arranged on the crankshaft body, a flat head 3 is arranged at one end of the crankshaft body, a conical platform 31 is arranged between the flat head and the crankshaft body, a convex shaft 4 is arranged at the other end of the crankshaft body, and concave platforms are provided on both sides of the convex shaft, extending along the axis direction of the crankshaft and perpendicular to the flat head.
[0017] As a technical improvement, a first inner cavity 5 is arranged at the end of the shaft body away from the flat head, a second inner cavity 6 is arranged inside the first inner cavity, a conical inner bottom cavity 7 is arranged inside the second inner cavity, the inner diameter of the first inner cavity is larger than that of the second inner cavity, and an outer expansion cavity 61 is symmetrically arranged on the inner wall of the second inner cavity.
[0018] As a technical improvement, a conical section 51 is provided at the opening surface of the first inner cavity.
[0019] As a technical improvement, a rounded corner structure is provided at the corner position of the flat head.
[0020] As a technical improvement, a hardened layer is provided on the surface of the main body of the machine shaft. The hardened layer adopts the surface after surface heat treatment by QPQ salt bath composite treatment technology. The flat head and convex shaft designed in this scheme are specific assembly structures, which can be used to control the axis degree. The convex shaft has concave platforms on both sides extending along the axis direction of the machine shaft and perpendicular to the flat head. The two ends are in a vertical relationship, so it is easy to control during installation.
Claims
1. A crankshaft structure, characterized in that: It includes a shaft body, a through hole is arranged on the shaft body, a flat head is arranged at one end of the shaft body, a conical platform is arranged between the flat head and the shaft body, a convex shaft is arranged at the other end of the shaft body, and concave platforms are arranged on both sides of the convex shaft and extend along the axis direction of the shaft and are perpendicular to the flat head.
2. A crankshaft structure according to claim 1, characterized in that: A first inner cavity is arranged at one end of the shaft body away from the flat head, a second inner cavity is arranged inside the first inner cavity, a conical inner bottom cavity is arranged inside the second inner cavity, the inner diameter of the first inner cavity is larger than that of the second inner cavity, and an outer expansion cavity is symmetrically arranged on the inner wall of the second inner cavity.
3. A crankshaft structure according to claim 2, characterized in that: A conical section is provided at the opening surface of the first inner cavity.
4. A crankshaft structure according to claim 1, characterized in that: A rounded corner structure is arranged at the corner position of the flat head.
5. The crankshaft structure according to claim 1, characterized in that: A hardened layer is arranged on the surface of the main body of the shaft.