A universal connection device for large compressor crankshafts

Abstract

This utility model discloses a universal connecting device for a large compressor crankshaft, characterized by comprising: a connecting disc and a baffle; wherein, the connecting disc is hollow inside for the compressor crankshaft to pass through, and the shape of the hollow structure inside the connecting disc is the same as the shape of the compressor crankshaft through which it passes; the baffle is installed at one end of the connecting disc and fixed to the shaft end of the large compressor crankshaft, and a connecting member is circumferentially arranged on the end face of the connecting disc located on the baffle. This utility model is easy to disassemble and flexibly adaptable to the connection of different workpieces, and can be used for flushing and running-in tests of large compressor main units.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment. More specifically, this utility model relates to a universal connecting device for a large compressor crankshaft. Background Technology

[0002] With industrial development, especially in the handling and installation of heavy and non-standard parts such as large compressor crankshafts, the challenges are increasing. During main unit assembly, due to the long torsional vibration analysis cycle, the flywheel can only be produced after the analysis is completed. The delayed arrival of the flywheel at the factory affects the main unit's flushing and running-in tests. To improve production efficiency and reduce testing costs, a universal connecting device for large compressor crankshafts was designed. This connecting plate allows for convenient and quick installation and disassembly, efficiently enabling flushing and running-in tests of large unit main units. It greatly improves operational flexibility and convenience, thereby significantly enhancing work efficiency while ensuring safety. Utility Model Content

[0003] The purpose of this invention is to provide a universal connection device for crankshafts of large compressors, which is easy to disassemble and flexible to adapt to the connection of different workpieces, and can be used for flushing and running-in tests of large compressor main units.

[0004] The technical solution adopted by this utility model to solve this technical problem is: a universal connecting device for a large compressor crankshaft, comprising: a connecting disc and a baffle; wherein, the connecting disc is hollow inside for passing through the compressor crankshaft, and the shape of the hollow structure inside the connecting disc is the same as the shape of the compressor crankshaft through which it passes.

[0005] A baffle is installed at one end of the connecting plate and fixed to the shaft end of the large compressor crankshaft. The connecting plate is provided with connecting parts circumferentially on the end face of the baffle.

[0006] As a further embodiment of this utility model, the connecting disk has a two-stage stepped structure along the axial direction, the front end face with the largest diameter of the connecting disk is coaxially connected to the baffle, and an opening is provided on the connecting disk, the opening penetrating the internal cavity of the connecting disk.

[0007] As a further embodiment of this utility model, an ear plate is provided at the opening of the connecting plate at the end with the smaller diameter, and a pair of ear plates are fastened by two bolts.

[0008] As a further embodiment of this utility model, the connecting component includes a bolt hole and a bolt; the bolt holes are equally spaced on the end face of the connecting plate located on the baffle in the circumferential direction, and the bolt is connected to the test motor through the bolt holes.

[0009] As a further embodiment of this utility model, the baffle has a threaded hole at its center and a bolt hole in its circumference. The baffle is threadedly connected to the compressor crankshaft through the threaded hole and is fixedly connected to the connecting disc through the bolt hole and the bolt.

[0010] This utility model has at least the following beneficial effects:

[0011] 1. Improve production efficiency and reduce the labor intensity of workers.

[0012] 2. Compared to the temperature difference method, it is easier to disassemble and assemble, and the bushing itself is elastic, so there is no need to heat the bushing, and the fit can be completed in a cold state.

[0013] 3. Compared to the press-fit method, it will not damage the mating surfaces, ensuring the quality of the crankshaft extension conical surface.

[0014] 4. This device is highly adaptable and can meet the matching requirements of crankshafts in large generator sets.

[0015] 5. This device improves the efficiency of the main unit flushing and running-in test and reduces the labor intensity of operators.

[0016] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0017] Figure 1 This is a front view of the connecting disc of this utility model;

[0018] Figure 2 This is a side view of the connecting disc of this utility model;

[0019] Figure 3 This is the front view of the baffle of this utility model;

[0020] Figure 4 This is a side view of the baffle of this utility model;

[0021] Figure 5 This is a connection diagram illustrating the application of the connection device of this utility model.

[0022] Among them, 1-connecting plate, 2-baffle, 3-compressor crankshaft, 4-test motor, 5-opening, 6-ear plate, 7-bolt two, 8-bolt hole one, 9-bolt one, 10-threaded hole one, 11-bolt hole three. Detailed Implementation

[0023] The present invention will now be described in detail and completely with reference to the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be particularly noted that the technical solutions and features provided in the various parts of the present invention, including the following description, can be combined with each other without conflict.

[0024] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The specific implementation process is as follows:

[0026] like Figures 1-5 As shown, this utility model provides a universal connecting device for a large compressor crankshaft 3, including: a connecting disc 1 and a baffle 2; wherein, the connecting disc 1 is a conical shaft extension structure, hollow inside for passing through the compressor crankshaft 3, and the shape of the hollow structure inside the connecting disc 1 is the same as the shape of the compressor crankshaft 3 that passes through, so as to adapt to the compressor crankshaft 3.

[0027] Baffle 2 is installed at one end of connecting plate 1 and fixed to the shaft end of large compressor crankshaft 3. Connecting plate 1 is provided with connecting parts circumferentially on the end face of baffle 2, so as to connect with test motor 4 for flushing and running-in test.

[0028] This technical solution may also include the following technical details to better achieve the technical effect: the connecting plate 1 has a two-stage stepped structure along the axial direction, the front end face with the largest diameter of the connecting plate 1 is coaxially connected to the baffle 2, the connecting plate 1 is provided with an opening 5, the opening 5 penetrates the internal cavity of the connecting plate 1, so that the connecting plate 1 is elastic, and the compressor crankshaft 3 can be matched in a cold state without heating the connecting plate 1.

[0029] This technical solution may also include the following technical details to better achieve the technical effect: the connecting plate 1 is provided with an ear plate 6 at the opening 5 at the end with the smaller diameter. A pair of ear plates 6 are fastened by bolts 7. The locking of the entire device mainly relies on bolts 7 on the connecting plate 1. Bolts 7 are M24 bolts.

[0030] This technical solution may also include the following technical details to better achieve the technical effect: the connecting component includes bolt hole 8 and bolt 9; bolt holes 8 are equally spaced on the end face of the connecting plate 1 located on the baffle 2, and bolt 9 is connected to the test motor 4 through bolt hole 8, thereby realizing the connection between the compressor crankshaft 3 and the test motor 4.

[0031] This technical solution may also include the following technical details to better achieve the technical effect: The baffle 2 has a threaded hole 10 at its center and bolt holes 11 around its circumference. The baffle 2 is threadedly connected to the compressor crankshaft 3 through the threaded hole 10. After the connection is fixed, it is connected and fixed to the connecting plate 1 through the bolt holes 11 and bolts 11. The baffle 2 partially prevents the connecting plate 1 from falling off and flying out and injuring people when the crankshaft rotates. Simultaneously, rotating the baffle 2 tightens it, providing axial positioning and maintaining interference fit on the internal conical surface of the connecting plate 1 when it is cold. The protruding part of the crankshaft is threadedly connected to the baffle 2. The bolts 11 on both sides of the baffle 2 mainly function to disassemble the connecting plate 1 through tightening force.

[0032] The universal connecting device for the crankshaft 3 of a large compressor is used as follows: This device connects to the compressor crankshaft 3 and is axially positioned via the baffle 2, thereby connecting the compressor main unit and the test motor 4 to complete the running-in test. The device is tightened and axially positioned by rotating the baffle 2. When the clearance between the baffle 2 and the shaft end step is 0, a cold interference fit is achieved between the connecting plate 1 and the compressor crankshaft 3, with an interference amount of 0.16mm. Finally, the connecting plate 1 is locked with M24 bolts. The device operates flexibly, smoothly, and reliably, meeting safety protection standards and usage requirements.

[0033] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. A general connecting device for a large compressor crankshaft, characterized by, include: A connecting disc and a baffle; wherein the connecting disc is hollow inside for passing through the compressor crankshaft, and the shape of the hollow structure inside the connecting disc is the same as the shape of the compressor crankshaft through which it passes. A baffle is installed at one end of the connecting plate and fixed to the shaft end of the large compressor crankshaft. The connecting plate is provided with connecting parts circumferentially on the end face of the baffle.

2. A universal connection for large compressor crankshafts as set forth in claim 1, characterized in that, The connecting plate has a two-stage stepped structure along the axial direction. The front end face of the connecting plate with the largest diameter is coaxially connected to the baffle. An opening is provided on the connecting plate, and the opening penetrates the internal cavity of the connecting plate.

3. A universal connection for large compressor crankshafts as set forth in claim 2, characterized in that, The connecting disc has an ear plate at the opening at the smaller diameter end, and the pair of ear plates are fastened by two bolts.

4. The universal connection for large compressor crankshafts of claim 1, wherein, The connector includes a bolt hole and a bolt; the bolt holes are evenly spaced on the end face of the connecting plate located on the baffle, and the bolt is connected to the test motor through the bolt holes.

5. The universal connection for large compressor crankshafts of claim 1, wherein, The baffle has a threaded hole at its center and a bolt hole in its circumference. The baffle is threaded to the compressor crankshaft through the threaded hole and is fixed to the connecting plate through the bolt hole and the bolt.

Images