End structure for bearing cooling of shaft extension end of marine medium-high speed motor
By adding flow-driving heat dissipation ribs to the end structure of the shaft extension bearing of the medium and high-speed motor for marine use and improving its layout, the air volume recovery and wind speed increase is achieved by using the wind speed and pressure difference, the problem of bearing cooling is solved and efficient Heat dissipation effect.
Patent Information
- Application Number
- CN202420721813.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-09
AI Technical Summary
The shaft extension bearings of marine medium and high-speed motors are difficult to dissipate heat during operation due to good sealing properties and difficult heat dissipation. The traditional fan cooling method is time-consuming and laborious and costly, so it cannot effectively reduce cooling.
Design an end structure including an air hood, front end cover and combined bolts. By adding diversion heat dissipation ribs to the front end cover, the arrangement is improved to be a bearing-collecting type, with large air inlet ports and small air outlet ports, and using wind speed The air volume recovery and wind speed increase is achieved through the pressure difference, and the air blown by the fan acts directly on the bearing heat conduction area for cooling.
It realizes effective cooling of shaft extension bearings without adding additional cooling equipment. It has a simple structure, is easy to disassemble, assembly and maintenance, and improves the heat dissipation effect.
Smart Images
Figure CN222147296U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an end structure for cooling a shaft extension end bearing of a medium- and high-speed marine motor, belonging to the technical field of motor shaft ends. Background Art
[0002] In recent years, the demand for various medium and high-speed motors for ships has been increasing. Compared with traditional motors, medium and high-speed motors for ships have the advantages of higher speed and motor power density, better sealing, and smaller size, which can effectively save manufacturing costs and installation space. High power and small size are certainly the advantages of medium and high-speed motors, but the problem that comes with it is that high power causes the motor temperature to rise quickly, and small size reduces the heat dissipation area. Although the temperature can be effectively controlled by installing a fan at the tail end of the shaft, the fan cannot blow wind to the shaft extension end to cool the shaft extension end. And because the marine motor has better sealing, the shaft extension end bearing can only conduct heat dissipation through the front end cover and the front bearing outer cover in contact with it. If a fan is installed at the shaft extension end, it is time-consuming, labor-intensive, and costly. Therefore, it is necessary to design a solution to solve the problem of difficult cooling of the shaft extension end bearing when the marine medium and high-speed motor is working.
[0003] Therefore, the present invention designs an end cover and wind shield structure that can effectively cool the shaft extension end bearing of the marine medium and high speed motor when it is working. Utility Model Content
[0004] The purpose of the utility model is to provide an end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor in order to solve the above problems, which can solve the problem of difficulty in cooling the shaft extension end bearing when the medium- and high-speed marine motor is working.
[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: an end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor, comprising a wind hood, a front end cover and a combination bolt, wherein the front end cover is connected to the inner and outer covers of the front bearing of the motor through the combination bolt, the front end cover is installed on the base of the motor through the combination bolt, the wind hood and the front end cover are fixedly connected through the combination bolt, a guide plate is arranged on the wind hood, and a guide heat dissipation rib is arranged on the front end cover. Compared with the traditional end cover, the number of guide heat dissipation ribs is increased, the heat dissipation area is further increased, and the heat dissipation effect of the end cover is improved. At the same time, the arrangement of the guide heat dissipation ribs is improved to be gathered toward the bearing, and the air inlet port The air volume enters from the air inlet of the guide heat dissipation ribs and blows from the air outlet to the bearing outer cover. When the wind blows from the air inlet to the air outlet, the air will be compressed due to the gathering structure and the air density will increase. Therefore, the wind speed at the air outlet is greater than that at the air inlet. At the same time, the air flow area is reduced. According to the pressure calculation formula, the air pressure at the air outlet is also increased. When the air passes through the guide heat dissipation ribs, there will be a certain loss of wind pressure and wind speed. However, due to the short distance, the loss can be ignored. Therefore, the wind speed and wind pressure at the air outlet are greater than those at the air inlet, which can effectively realize the recovery of air volume and the increase of wind speed, so that the wind blown by the fan acts on the end cover area where the heat of the bearing is directly conducted to achieve the best heat dissipation effect.
[0006] Preferably, a front bearing inner and outer cover mounting hole is formed on the front cover, and the front cover is connected to the front bearing inner and outer covers of the motor by inserting the combination bolts into the front bearing inner and outer cover mounting holes.
[0007] Preferably, an end cover mounting hole is opened on the front end cover, and the front end cover is mounted on the base of the motor by inserting the combination bolt into the end cover mounting hole.
[0008] Preferably, the front end cover is provided with a wind hood connecting hole, the wind hood is provided with a wind hood mounting hole, and the wind hood is fixed to the front end cover by inserting the combined bolts into the wind hood connecting hole and the wind hood mounting hole.
[0009] Preferably, the arrangement direction of the guide and heat dissipation ribs is converging toward the bearing, the air inlet port is large, and the air outlet port is small, the air volume enters from the air inlet of the guide and heat dissipation ribs, and blows toward the bearing outer cover from the air outlet end.
[0010] The beneficial effects of the utility model are as follows: the utility model can recycle the air volume of the fan at the tail end of the motor, thereby realizing the cooling of the shaft extension end bearing without adding other cooling equipment, and the structure is simple and easy to disassemble and repair;
[0011] The wind hood of the utility model can collect the wind blown by the fan through the guide and heat dissipation ribs of the machine base to the greatest extent, and then guide it into the guide and heat dissipation ribs of the end cover, and after being collected, blow it toward the outer cover of the front bearing at the shaft extension end, thereby cooling the end cover area where the heat of the bearing is directly conducted, and further achieving the purpose of bearing cooling. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 This is a schematic diagram of the structure of the stroke hood of the utility model;
[0014] Figure 3 It is a schematic diagram of the structure of the end cover in the utility model.
[0015] In the figure: 1. wind hood; 1-1. wind hood mounting hole; 1-2. guide plate; 2. front end cover; 2-1. wind hood connection hole; 2-2. guide and heat dissipation ribs; 2-3. end cover mounting hole; 2-4. front bearing inner and outer cover mounting holes; 3. combination bolts. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] See also Figure 1-3 As shown, an end structure for cooling the shaft extension end bearing of a marine medium- and high-speed motor comprises a wind hood 1, a front end cover 2 and a combination bolt 3. The front end cover 2 is connected to the inner and outer covers of the front bearing of the motor by the combination bolt 3. The front end cover 2 is installed on the base of the motor by the combination bolt 3. The wind hood 1 and the front end cover 2 are fixedly connected by the combination bolt 3. A guide plate 1-2 is arranged on the wind hood 1, and a guide and heat dissipation rib 2-2 is arranged on the front end cover 2.
[0018] The wind hood 1 structure of the present invention can effectively recover the wind volume of the fan. The end cover structure increases the number of guide and heat dissipation ribs 2-2 compared with the traditional end cover, further increases the heat dissipation area, and improves the heat dissipation effect of the end cover. At the same time, the arrangement of the guide and heat dissipation ribs 2-2 is improved to be a gathering type toward the bearing, with a large air inlet port and a small air outlet port. The air volume enters from the air inlet of the guide and heat dissipation ribs 2-2 and blows toward the bearing outer cover from the air outlet end. When the wind blows from the air inlet end to the air outlet end, the air will be compressed due to the gathering structure and the air density will increase, so the wind speed at the air outlet end is greater than that at the air inlet end. At the same time, the air flowable area is reduced. According to the pressure calculation formula, the air pressure at the air outlet end is also increased. When the air passes through the guide and heat dissipation ribs 2-2, there will be a certain loss in wind pressure and wind speed. However, due to the short distance, the loss can be ignored. Therefore, the wind speed and wind pressure at the air outlet end are greater than those at the air inlet end, thereby effectively realizing the recovery of air volume and the improvement of wind speed, so that the wind blown by the fan acts on the end cover area where the heat of the bearing is directly conducted to achieve the best heat dissipation effect.
[0019] As a technical optimization solution of the utility model, Figure 3 As shown, the front end cover 2 is provided with front bearing inner and outer cover mounting holes 2-4, and the front end cover 2 is connected to the front bearing inner and outer covers of the motor by means of assembly bolts 3 inserted into the front bearing inner and outer cover mounting holes 2-4.
[0020] As a technical optimization solution of the utility model, Figure 3 As shown, an end cover mounting hole 2 - 3 is opened on the front cover 2, and the front cover 2 is mounted on the base of the motor by inserting a combination bolt 3 into the end cover mounting hole 2 - 3.
[0021] As a technical optimization solution of the utility model, Figure 2 As shown, the front cover 2 is provided with a wind hood connecting hole 2-1, the wind hood 1 is provided with a wind hood mounting hole 1-1, and the wind hood 1 is fixed to the front cover 2 by means of a combination bolt 3 inserted into the wind hood connecting hole 2-1 and the wind hood mounting hole 1-1.
[0022] As a technical optimization solution of the utility model, Figure 3 As shown, the arrangement direction of the guide heat dissipation ribs 2-2 is a convergence type toward the bearing, the air inlet port is large, and the air outlet port is small. The air volume enters from the air inlet of the guide heat dissipation ribs 2-2 and blows toward the bearing outer cover from the air outlet. The air in the convergence type structure will be compressed and the air density will increase, so the wind speed at the air outlet is greater than that at the air inlet, which can effectively realize the recovery of air volume and the increase of wind speed, so that the wind blown by the fan acts on the end cover area where the heat of the bearing is directly conducted to achieve the best heat dissipation effect.
[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor, characterized in that: The invention comprises a wind shield (1), a front end cover (2) and a combination bolt (3); the front end cover (2) is connected to the inner and outer covers of the front bearing of the motor via the combination bolt (3); the front end cover (2) is installed on the base of the motor via the combination bolt (3); the wind shield (1) and the front end cover (2) are fixedly connected via the combination bolt (3); a guide plate (1-2) is arranged on the wind shield (1); and a guide and heat dissipation rib (2-2) is arranged on the front end cover (2).
2. The end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor according to claim 1, characterized in that: The front end cover (2) is provided with a front bearing inner and outer cover mounting hole (2-4), and the front end cover (2) is connected to the front bearing inner and outer covers of the motor by means of the combination bolts (3) being inserted into the front bearing inner and outer cover mounting holes (2-4).
3. The end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor according to claim 1, characterized in that: The front end cover (2) is provided with an end cover mounting hole (2-3), and the front end cover (2) is mounted on the base of the motor by inserting the combination bolt (3) into the end cover mounting hole (2-3).
4. The end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor according to claim 1, characterized in that: The front end cover (2) is provided with a wind shield connection hole (2-1), and the wind shield (1) is provided with a wind shield mounting hole (1-1).
5. The end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor according to claim 4, characterized in that: The wind shield (1) is fixed to the front end cover (2) by means of the combined bolts (3) being inserted into the wind shield connecting holes (2-1) and the wind shield mounting holes (1-1).
6. The end structure for cooling the shaft extension end bearing of a medium- and high-speed marine motor according to claim 1, characterized in that: The arrangement direction of the guiding and heat dissipating ribs (2-2) is a convergence type toward the bearing, the air inlet port is large, and the air outlet port is small, and the air volume enters from the air inlet port of the guiding and heat dissipating ribs (2-2) and blows toward the bearing outer cover from the air outlet port.