Transition sleeve mechanism for improving bearing interchange measures

Abstract

The utility model provides a transition sleeve mechanism for improving bearing interchange measures, and relates to the field of explosion-proof motor bearing interchange structures, the mechanism comprises an end cover, an outer cover, a shaft, a transition sleeve and a bearing, the end cover and the outer cover are assembled on the shaft, the end cover is fixedly connected with a motor base through a screw, the transition sleeve and the bearing are matched and assembled on the shaft, and the bearing is fixedly connected with the end cover. The transition sleeve is located behind the bearing. According to the utility model, a wide-body bearing, a standard bearing and a narrow-series bearing can be interchanged for use under the condition that bearing inner holes are not changed and the same, so that the problem that motors of the same type use the same part is effectively solved, an explosion-proof structure is ensured not to be changed, few molds are put into production, the cost is reduced, and the universality is improved; in a test, the bearing is easy to be at high temperature, and the temperature rise problem of a standard or narrow-series bearing can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof motor bearing interchangeable structures, and particularly to a transition sleeve mechanism for improving bearing interchangeability measures. The transition sleeve is applicable to motors after product output. Due to the fact that the temperature rise of the motor bearings exceeds the standard, the utility model can reduce the temperature rise of the motor bearings without re-producing tooling and molds. Background Technique

[0002] In the actual production process of coal mine equipment, explosion-proof motors, as equipment that requires mandatory inspection, need to undergo various inspections before being used underground. The most crucial inspections are explosion-proof inspection and safety standard inspection. Only after passing the inspections by these two inspection agencies and obtaining the corresponding certificates can they be used underground. There are two particularly important inspections during the inspection process: 1. Explosion-proof inspection: Explosive gas is introduced into the motor and ignited inside the motor. If the explosive gas and flame do not spread outside the motor, it is considered qualified. 2. Performance inspection: During the test of the motor, it needs to meet the corresponding national standards, such as the starting performance and bearing temperature rise of the motor. In the design process of motors of the same type, they need to refer to each other. When making a new motor based on a motor that has already obtained a certificate, in order to ensure that the explosion-proof structure does not change, reduce the production of molds, and lower costs, it is inevitable to use the same components on motors of different powers. In this process, the explosion-proof structure is the same, the investment in molds is reduced, and the interchangeability of parts is considered. The same end covers, machine bases, shafts, etc. are used. However, due to the different sizes of the motors, the sizes of the bearings required are different. Additionally, some motors were designed conservatively in the early stage, with a relatively large bearing load margin, and the bearings are prone to high temperatures during testing.

[0003] Now, it is necessary to solve the problem that without replacing the end cover, outer cover, and shaft, only replacing the bearing can meet the design of different motor capacities for the same type of product. Summary of the Invention

[0004] The purpose of the utility model is to provide a transition sleeve mechanism for improving bearing interchangeability measures.

[0005] A transition sleeve mechanism for improving bearing interchangeability measures includes an end cover, an outer cover, a shaft, a transition sleeve, and a bearing. The end cover and the outer cover are assembled on the shaft, and the end cover is fixedly connected to the machine base of the motor by screws. The transition sleeve and the bearing are matched and assembled on the shaft, and the transition sleeve is located at the rear end of the bearing.

[0006] Preferably, holes are provided on the transition sleeve.

[0007] Preferably, the number of holes is not less than 3, and the holes are evenly distributed in a circular pattern.

[0008] This invention allows for the interchangeability of wide-body bearings with standard and narrow-series bearings without altering the bearing inner bore. This effectively solves the problem of using the same components in the same type of motor, ensuring that the explosion-proof structure remains unchanged, reducing the need for production molds, lowering costs, increasing versatility, and effectively reducing the temperature rise of bearings in some motors with large bearing capacity during testing, especially when bearings are prone to overheating. Using standard or narrow-series bearings can effectively reduce the bearing temperature rise problem. Attached Figure Description

[0009] Figure 1 A schematic diagram of the transition sleeve mechanism after it is assembled with the motor base to improve bearing interchangeability;

[0010] Figure 2 A schematic diagram of the transition sleeve from one perspective;

[0011] Figure 3 This is a schematic diagram of the transitional sleeve from another perspective.

[0012] In the diagram: End cap 1, outer cap 2, shaft 3, transition sleeve 4, bearing 5, base 6, hole 7. Detailed Implementation

[0013] To make the technical solution of this utility model easier to understand, the technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.

[0014] Please also refer to Figure 1 , Figure 2 and Figure 3 The transition sleeve mechanism for improving bearing interchangeability includes an end cover 1, an outer cover 2, a shaft 3, a transition sleeve 4, and a bearing 5. The end cover and outer cover are mounted on the shaft. The end cover is fixedly connected to the motor base 6 with screws. The transition sleeve mates with the bearing and is mounted on the shaft, with the transition sleeve located at the rear end of the bearing. Holes are provided on the transition sleeve for grease drainage and heat dissipation. The number of holes is no less than three, and the holes are evenly distributed circumferentially. In this embodiment, six holes are designed to achieve optimal heat dissipation.

[0015] The transition sleeve 4 of this invention serves to interchange bearings. Removing the transition sleeve 4 allows the use of a larger bearing, while installing it allows the use of a smaller bearing. The transition sleeve 4 and end cover 1 are interference-fitted. This invention allows for the interchangeability of wide-body bearings with standard and narrow-series bearings without altering the bearing's inner bore. This effectively solves the problem of using the same components in the same type of motor, ensuring the explosion-proof structure remains unchanged, reducing the need for production molds, lowering costs, and increasing versatility. Furthermore, for motors with large bearing load margins, bearings are prone to high temperatures during testing; using standard or narrow-series bearings can effectively reduce bearing temperature rise.

[0016] It should be noted that the embodiments described herein are only some embodiments of this utility model, and not all implementations of this utility model. These embodiments are merely illustrative and are intended only to provide a more intuitive and clear way of understanding the content of this utility model, not to limit the technical solutions described herein. All other implementation methods that can be conceived by those skilled in the art without creative effort, as well as other simple substitutions and variations of the technical solutions of this utility model, without departing from the concept of this utility model, are within the protection scope of this utility model.

Claims

1. A transition sleeve mechanism for improving bearing interchangeability, characterized in that: The transition sleeve mechanism for improving bearing interchangeability includes an end cover, an outer cover, a shaft, a transition sleeve, and a bearing. The end cover and the outer cover are mounted on the shaft. The end cover is fixedly connected to the motor base with screws. The transition sleeve and the bearing are fitted together and mounted on the shaft. The transition sleeve is located at the rear end of the bearing.

2. The transition sleeve mechanism for improving bearing interchangeability as described in claim 1, characterized in that: Holes are made on the transition sleeve.

3. The transition sleeve mechanism for improving bearing interchangeability as described in claim 2, characterized in that: The number of holes shall be no less than 3, and the holes shall be evenly distributed in a circle.

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