A new structure of a crankshaft shaft end coupling installation

Abstract

The utility model discloses a novel structure of crankshaft shaft extension end coupling installation, including crankshaft, flywheel, its characterized in that: the shaft extension end of crankshaft is set up as the taper face, and the corresponding flywheel is equipped with the taper axle hole, and the taper axle hole is equipped with the corresponding key groove on the taper face of crankshaft, and the key groove is equipped with the key, the shaft extension end port of crankshaft passes through the taper axle hole of flywheel, and the shaft extension end port of crankshaft is equipped with the gasket and the nut of screw thread connection on, and the gasket is pressed tightly by the nut.

Description

Technical Field

[0001] This utility model relates to an improved invention of crankshaft, and more particularly to an improved invention of a novel structure for mounting a crankshaft extension end coupling. Background Technology

[0002] See appendix Figure 2 The connection between the crankshaft a1 extension and the flywheel a2 is traditionally achieved using a key a3, where the shaft and bore are fitted with a transition or a small interference fit. This is a very common practice, but it has unavoidable drawbacks. During maintenance and disassembly, the outer diameter of the crankshaft a1 is easily damaged, and installation requires methods such as electric heating, oil heating, or welding torch heating. Furthermore, the traditional hot-fitting process is complex, especially in chemical plants where hot work requires special permits, which has a significant impact. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a novel structure for installing crankshaft extension end couplings.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a novel structure for installing a crankshaft extension end coupling includes a crankshaft and a flywheel, characterized in that: the extension end of the crankshaft is tapered, the corresponding flywheel is provided with a tapered shaft hole, the tapered shaft hole and the tapered surface of the crankshaft are provided with corresponding keyways, a key is provided in the keyway, the extension end port of the crankshaft passes through the tapered shaft hole of the flywheel, and a washer and a nut are threadedly connected to the extension end port of the crankshaft, the washer being pressed by the nut.

[0005] The nut is a slotted nut and is equipped with a cotter pin, with a pin hole on the corresponding crankshaft extension end.

[0006] The taper of the crankshaft's shaft extension end is 1:20.

[0007] The crankshaft's extension end port is a reduced diameter end.

[0008] The beneficial effect of this utility model is that the improved crankshaft extension end coupling installation structure is novel. The crankshaft extension end is connected to the flywheel through a conical surface, which facilitates maintenance and disassembly, does not damage the outer circle of the crankshaft, and avoids many limitations of hot-fitting. Attached Figure Description

[0009] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a diagram of the conventional connection structure of this utility model. Detailed Implementation

[0012] The accompanying drawings illustrate the structure of this utility model, and further details will be described below with reference to the drawings. In this embodiment, see the attached drawings. Figure 1 This novel structure for mounting a crankshaft extension coupling includes a crankshaft 1 and a flywheel 2. The extension end of the crankshaft 1 is a conical surface 3, and the corresponding flywheel 2 is equipped with a conical shaft hole 4. The conical shaft hole 4 and the conical surface 3 of the crankshaft 1 have corresponding keyways 5, and a key 6 is fitted inside the keyway 5. The extension end of the crankshaft 1 passes through the conical shaft hole 4 of the flywheel 2, and a washer 7 and a threaded nut 8 are fitted onto the extension end of the crankshaft 1. The washer 7 is pressed down by the nut 8. Preferably, the nut 8 is a slotted nut and is equipped with a cotter pin 9, and a pin hole is provided on the corresponding extension end of the crankshaft 1.

[0013] During installation, the key 6 is pre-placed in the keyway 5 of the conical surface 3 of the crankshaft 1. Then, the crankshaft 1 shaft extension end, corresponding to the keyway 5 of the flywheel 2, is inserted into the conical shaft hole 4. Next, a washer 7 is fitted onto the port of the crankshaft 1 shaft extension end, and then a nut 8 is threaded on. The washer 7 is pressed by the nut 8. Finally, a cotter pin 9 is inserted into the nut 8 to fix it to the crankshaft 1 shaft extension end, ensuring a stable and reliable connection. This completes the installation of the crankshaft 1 shaft extension end and the flywheel 2, facilitating maintenance and disassembly, without damaging the outer diameter of the crankshaft 1, and avoiding heat-induced assembly.

[0014] As a further improvement, the taper of the crankshaft 1's shaft extension end is 1:20, which can be adjusted according to usage requirements.

[0015] As a further improved specific implementation, the crankshaft 1 has a reduced diameter end port, which better fits the gasket 7 and the nut 8, and limits the position of the gasket 7.

[0016] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel structure for mounting a crankshaft extension end coupling, comprising a crankshaft and a flywheel, characterized in that: The crankshaft extension end is tapered, and the corresponding flywheel is equipped with a tapered shaft hole. The tapered shaft hole and the tapered surface of the crankshaft are provided with corresponding keyways, and a key is provided in the keyway. The crankshaft extension end port passes through the tapered shaft hole of the flywheel, and a washer and a nut are threadedly connected to the crankshaft extension end port. The washer is pressed by the nut.

2. The novel structure for installing the crankshaft extension end coupling as described in claim 1, characterized in that: The nut is a slotted nut and is equipped with a cotter pin, with a pin hole on the corresponding crankshaft extension end.

3. The novel structure for installing the crankshaft extension end coupling as described in claim 1, characterized in that: The taper of the crankshaft's shaft extension end is 1:

20.

4. The novel structure for installing the crankshaft extension end coupling as described in claim 1, characterized in that: The crankshaft's extension end port is a reduced diameter end.

Images