Motor bearing water cooling structure

Abstract

The utility model discloses a water cooling structure for a motor bearing, which relates to the technical field of motor bearing cooling and comprises an end cover, a water channel cover plate is arranged in front of the end cover, two water pipe joints are arranged behind the end cover, the end cover comprises a disc body and a shaft sleeve, water channel ribs are arranged in the disc body, and the shaft sleeve is arranged in the disc body. And water channels between the water pipe connector and the water channel ribs are communicated with water channels at the front end of the shaft sleeve. Through the integrated design of installing and welding, circulating cooling is carried out in the water channel on the end cover through cooling water, the heat exchange area is larger, the cooling efficiency is high, heat dissipation is accelerated, the temperature of a motor bearing is effectively reduced, the service life of the bearing and the service life of equipment are prolonged, and the cooling structure is low in noise and high in reliability. And additional noise generated by the motor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motor bearing cooling, in particular to a motor bearing water cooling structure. Background Art

[0002] The motor bearing is an important part of the motor. It supports the rotor, transmits power and bears loads. It is the connection hub between the motor stator and rotor. Many factors such as poor matching of bearing mounting parts, poor assembly quality, grease aging, bearing body wear, and poor bearing heat dissipation can cause the bearing temperature to rise. The increase in bearing temperature will lead to a reduction in bearing life, bearing damage, and even shaft locking failure, which may cause friction between the motor stator and rotor, resulting in the scrapping of the motor stator and rotor, seriously endangering the safe operation of the motor.

[0003] Large and medium-sized motor bearings do not have independent heat dissipation devices, and only rely on the internal and external air circulation of the motor and the natural heat dissipation of the bearing mounting components to cool down. This cooling effect is poor, especially when the ambient temperature is high, the bearing cannot be cooled, and the bearing temperature rise is often too high, which damages the motor and affects production operations. For example, the authorized patent CN202320790475.X, a high-voltage motor bearing cooling device, can solve the heat dissipation problem well, but the heat exchange efficiency of this method needs to be improved. Comprehensive consideration, according to the actual situation, one-piece welding manufacturing can be adopted, which is more compact. Utility Model Content

[0004] The purpose of the utility model is to provide a water-cooling structure for a motor bearing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-cooling structure for a motor bearing, comprising an end cover, a water channel cover plate is provided in front of the end cover, two water pipe joints are provided at the rear of the end cover, the end cover comprises a disk body and a shaft sleeve, water channel ribs are provided in the disk body, and the water channel between the water pipe joint and the water channel ribs and the water channel at the front end of the shaft sleeve are interconnected.

[0006] Furthermore: a water barrier is arranged between the shaft sleeve and one of the water pipe joints, and the waterway between the waterway ribs and the waterway at the front end of the shaft sleeve are interconnected to form an annular serpentine waterway.

[0007] Further: the water channel cover plate includes an outer water channel cover and an inner water channel cover, the outer water channel cover seals the water channel between the water channel ribs, and the inner water channel cover seals the water channel at the front end of the sleeve.

[0008] Preferably, two through holes are provided on the top of the end cover, the rear of the through holes are communicated with the water pipe joint, and a plug is provided outside the through holes.

[0009] Preferably: a limiting groove is provided on the rear outer edge of the end cover, and the limiting groove can limit the motor housing. A bearing is arranged in the shaft sleeve, and the bearing is sleeved on the motor shaft. A bearing inner cover is provided behind the bearing.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts an integrated design through assembly welding, and circulates cooling through cooling water in the water channel on the end cover. Due to the arrangement of water channel ribs, the heat exchange area is larger, the cooling efficiency is high, the heat dissipation is accelerated, the motor bearing temperature is effectively reduced, the bearing life and the equipment life are extended, and the cooling structure has low noise, which avoids the motor from generating additional noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is an exploded view of the utility model;

[0013] Figure 3 It is the front view of the utility model;

[0014] Figure 4 It is a schematic diagram of AA section view;

[0015] Figure 5 This is a rear view of the utility model;

[0016] Figure 6 This is a schematic diagram of the waterway direction;

[0017] Figure 7 This is an assembly drawing of the utility model.

[0018] In the figure: 1, end cover, 2, water channel cover plate, 3, water pipe joint, 4, plug, 5, motor housing, 6, bearing inner cover, 7, bearing, 8, motor shaft, 101, disk body, 102, bushing, 103, water channel rib, 104, limit groove, 105, water barrier, 201, water channel outer cover, 202, water channel inner cover. DETAILED DESCRIPTION

[0019] The present invention will be described below based on the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. However, it is worth noting that the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. However, for the parts that are not described in detail, those skilled in the art can also fully understand the present invention.

[0020] In addition, those skilled in the art should understand that the drawings are only provided to illustrate the purpose, features and advantages of the present invention, and the drawings are not actually drawn according to scale.

[0021] At the same time, unless the context clearly requires otherwise, the words "include", "comprises" and similar words throughout the specification and claims should be interpreted as inclusive rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0022] See also Figure 1-Figure 7 The utility model provides a technical solution: comprising an end cover 1, a waterway cover plate 2 is provided in front of the end cover 1, two water pipe joints 3 are provided at the rear of the end cover 1, the end cover 1 comprises a disk body 101 and a shaft sleeve 102, a waterway rib 103 is provided in the disk body 101, and the waterway between the water pipe joint 3 and the waterway rib 103 and the waterway at the front end of the shaft sleeve 102 are interconnected.

[0023] A water barrier 105 is provided between the shaft sleeve 102 and one of the water pipe joints 3 , and the waterway between the waterway ribs 103 and the waterway at the front end of the shaft sleeve 102 are interconnected to form an annular serpentine waterway.

[0024] The water channel cover plate 2 includes an outer water channel cover 201 and an inner water channel cover 202 . The outer water channel cover 201 seals the water channel between the water channel ribs 103 , and the inner water channel cover 202 seals the water channel at the front end of the shaft sleeve 102 .

[0025] The end cover 1 has two through holes on its top, the rear of the through holes communicates with the water pipe joint 3, and a plug 4 is provided outside the through holes.

[0026] A limiting groove 104 is provided on the rear outer edge of the end cover 1 , and the limiting groove 104 can limit the motor housing 5 . A bearing 7 is provided in the shaft sleeve 102 , and the bearing 7 is sleeved on the motor shaft 8 . A bearing inner cover 6 is provided behind the bearing 7 .

[0027] The end cover is provided with water channel ribs 103 and water barrier strips 105 to form an annular cooling water channel; the water channel cover plate 2 is welded to the water channel plane of the end cover 1 to form a sealed water channel; two inlet and outlet water pipe joints 3 are welded at the head and tail of the water channel, the end cover 1 can be installed with the motor housing 5 by bolts, the bearing 7 is installed in the shaft sleeve 102 chamber, the bearing inner cover 6 fixes the bearing 7 on the inner side of the housing, and the bearing 7 is installed on the motor shaft 8. When the motor is running, heat is generated to increase the temperature of the bearing 7, and the cooling water enters the end cover 1 through the water pipe joint 3, and circulates and cools in the water channel on the end cover 1. This cooling method has high cooling efficiency, accelerates heat dissipation, effectively reduces the temperature of the motor bearing, and prolongs the life of the bearing and the equipment.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-cooling structure for a motor bearing, characterized in that: The invention comprises an end cover (1), wherein a water channel cover plate (2) is provided in front of the end cover (1), and two water pipe joints (3) are provided at the rear of the end cover (1). The end cover (1) comprises a disk body (101) and a shaft sleeve (102), and a water channel rib (103) is provided in the disk body (101). The water channel between the water pipe joint (3) and the water channel rib (103) and the water channel at the front end of the shaft sleeve (102) are interconnected.

2. A water-cooling structure for motor bearings according to claim 1, characterized in that: A water barrier strip (105) is provided between the shaft sleeve (102) and one of the water pipe joints (3), and the water channel between the water channel ribs (103) and the water channel at the front end of the shaft sleeve (102) are interconnected to form an annular serpentine water channel.

3. The water-cooling structure for a motor bearing according to claim 1, characterized in that: The water channel cover plate (2) comprises a water channel outer cover (201) and a water channel inner cover (202); the water channel outer cover (201) seals the water channel between the water channel ribs (103); and the water channel inner cover (202) seals the water channel at the front end of the shaft sleeve (102).

4. The water-cooling structure for a motor bearing according to claim 1, characterized in that: The end cover (1) has two through holes on its upper side, the rear of the through holes being in communication with the water pipe joint (3), and a plug (4) is provided outside the through holes.

5. The water-cooling structure for a motor bearing according to claim 1, characterized in that: A limiting groove (104) is provided on the rear outer edge of the end cover (1), and the limiting groove (104) can limit the motor housing (5). A bearing (7) is arranged in the shaft sleeve (102), and the bearing (7) is sleeved on the motor shaft (8). A bearing inner cover (6) is provided behind the bearing (7).

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