Motor air-cooling heat dissipation structure

Abstract

The utility model relates to a motor air cooling heat dissipation structure, which comprises a motor casing, a rotating shaft, a sliding bearing, a fan and a wind blocking ring plate, the rotating shaft is installed on the motor casing through the sliding bearing, the rotating shaft is sleeved with the fan, fan blades of the fan are provided with the fan ring plate, and the outer side of the fan ring plate is provided with a wind blocking strip; a wind blocking ring plate is arranged in the motor shell, and a positioning hole capable of being matched with the wind blocking strip is formed in the middle of the wind blocking ring plate. According to the utility model, the wind shielding ring plate is arranged in the motor casing, the fan ring plate is arranged on the fan, the fan ring plate is provided with the wind shielding strip which can be matched with the wind shielding ring plate, and the wind shielding strip is matched with the wind shielding ring plate in the radial direction, so that when the rotating shaft axially moves, the fan cannot be influenced, and the phenomenon that the fan is damaged can be avoided; the length of the air blocking strip is larger than the axial movement amplitude, the air blocking strip can be matched with the air blocking ring plate all the time, and air leakage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor cooling and relates to an air-cooling heat dissipation structure for a motor. Background Art

[0002] When using a motor, it is usually necessary to consider the issue of cooling. A commonly used method is to build a fan into the motor casing. Usually, a wind shield is welded to the base baffle, and then a wind shield ring plate made of epoxy board material is bolted to the wind shield. This is costly and consumes a lot of material. In addition, when the shaft and the motor casing are assembled with sliding bearings, the axial movement of the shaft will drive the fan to move axially, which may cause friction between the fan and the wind shield, causing damage to the fan blades. Summary of the invention

[0003] The utility model aims to overcome the deficiencies in the prior art, solve the problem that friction between a motor wind shield and a fan may occur, resulting in damage to the fan blades, and provide a motor air-cooling heat dissipation structure.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The motor air-cooling heat dissipation structure includes a motor housing, a rotating shaft, a sliding bearing, a fan and a wind shield ring plate. The rotating shaft is installed on the motor housing by means of a sliding bearing. The fan is mounted on the rotating shaft. A fan ring plate is arranged on the fan blades. A wind shield strip is arranged on the outer side of the fan ring plate. A wind shield ring plate is arranged inside the motor housing. A positioning hole that can cooperate with the wind shield strip is opened in the middle of the wind shield ring plate.

[0006] Preferably, the wind shield ring plate is stepped, a fixing ring is arranged on the outer side of the wind shield ring plate, the fixing ring is connected to the motor housing, and a connecting ring plate inclined to one side is arranged between the inner ring and the outer ring of the wind shield ring plate.

[0007] Preferably, an air cooling channel is opened on the upper side of the motor casing, and a cooler is arranged on the upper side of the motor casing.

[0008] Preferably, the fan includes a shaft sleeve, and a shaft is provided with a shaft shoulder that can cooperate with the shaft sleeve and a groove for assembling a shaft elastic retaining ring. One side of the shaft sleeve is fixed by the shaft shoulder, and the other side is fixed by the shaft elastic retaining ring. The shaft sleeve and the shaft are fixed by an interference fit connection.

[0009] Preferably, the width of the windshield strip is 5-10 mm.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] The utility model arranges a wind shield ring plate in the motor casing and a fan ring plate on the fan, the fan ring plate is provided with a wind shield strip that can cooperate with the wind shield ring plate, the wind shield strip and the wind shield ring plate are radially matched, when the shaft undergoes axial movement, it will not affect the fan, and the fan can be avoided from being damaged; the length of the wind shield strip is greater than the amplitude of the axial movement, the wind shield strip can always cooperate with the wind shield ring plate, no air leakage will occur, and the cooling circulation air path of the motor will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a partial structural schematic diagram of the utility model.

[0014] Figure 3 for Figure 2 The enlarged schematic diagram of point I in FIG.

[0015] Figure 4 This is a schematic diagram of the fan structure of the utility model.

[0016] Figure 5 It is a schematic diagram of the wind shielding ring plate of the present utility model.

[0017] In the figure: 1. motor housing; 2. rotating shaft; 3. sliding bearing; 4. fan; 5. wind shield ring plate; 6. fan ring plate; 7. wind shield strip; 8. positioning hole; 9. fixing ring; 10. connecting ring plate; 11. air cooling channel; 12. cooler; 13. shaft sleeve; 14. shaft shoulder; 15. shaft elastic retaining ring. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0019] like Figure 1-Figure 5 As shown, a motor air-cooling heat dissipation structure includes a motor housing 1, a rotating shaft 2, a sliding bearing 3, a fan 4 and a wind shielding ring plate 5, wherein the motor housing 1 provides installation support for each component;

[0020] The rotating shaft 2 is mounted on the motor housing 1 by means of a sliding bearing 3. A fan 4 is mounted on the rotating shaft 2. A fan ring plate 6 is arranged on the blades of the fan 4. The fan ring plate 6 has a certain wind guiding effect and also has a certain effect of preventing wind backflow. A wind shield strip 7 is arranged on the outer side of the fan ring plate 6.

[0021] A wind shield ring plate 5 is arranged in the motor housing 1, and a positioning hole 8 which can cooperate with the wind shield strip 7 is opened in the middle of the wind shield ring plate 5. The wind shield strip 7 cooperates with the positioning hole 8, so that the gap between the wind shield ring plate 5 and the fan ring plate 6 is reduced. When the rotating shaft 2 undergoes axial movement, the wind shield strip 7 can also play a compensating role, so that the wind shield ring plate 5 and the fan ring plate 6 always maintain a matching relationship.

[0022] Furthermore, the wind shield ring plate 5 is stepped, and a fixing ring 9 is arranged on the outer side of the wind shield ring plate 5, and the fixing ring 9 is connected to the motor housing 1, and the two can be directly fixed by welding, and the fixing ring 9 makes the wind shield ring plate 5 and the motor housing 1 firmly connected;

[0023] A connecting ring plate 10 inclined to one side is provided between the inner ring and the outer ring of the wind shielding ring plate 5 , and the connecting ring plate 10 makes the inner ring of the wind shielding ring plate 5 close to the fan ring plate 6 .

[0024] Furthermore, an air cooling channel 11 is opened on the upper side of the motor casing 1, and a cooler 12 is arranged on the upper side of the motor casing 1. The heat inside the motor casing 1 can be sucked into the air cooling channel 11 by the fan 4 and then enter the cooler 12 for cooling.

[0025] Furthermore, the fan 4 includes a shaft sleeve 13, and the rotating shaft 2 is provided with a shaft shoulder 14 that can cooperate with the shaft sleeve 13 and a groove for assembling a shaft elastic retaining ring 15. One side of the shaft sleeve 13 is fixed by the shaft shoulder 14, and the other side is fixed by the shaft elastic retaining ring 15. The shaft sleeve 13 and the rotating shaft 2 are fixed by an interference fit connection.

[0026] Furthermore, the width of the windshield strip 7 is 5-10 mm, and the axial movement amplitude of the sliding bearing 3 is generally 3-5 mm. The width of the windshield strip is greater than the axial movement amplitude of the sliding bearing 3, so that the windshield strip 7 and the windshield ring plate 5 can always maintain a matching relationship.

[0027] Furthermore, the distance between the wind shield strip 7 and the positioning hole 8 is 1-2 mm. The smaller distance enables the hot air to be better blocked by the wind shield ring plate 5 so as to guide the hot air to the cooling channel 11 .

[0028] Working principle: The utility model utilizes a wind shield ring plate 5 arranged inside the motor casing 1, a fan 4 is arranged on the rotating shaft 2, and a fan ring plate 6 that can cooperate with the wind shield ring plate 5 is arranged on the fan 4. The cooperation of the two can prevent the hot air from flowing back when the fan 4 guides the hot air, thereby improving the cooling effect; and a wind shield strip 7 is arranged on the fan ring plate 6, and the width of the wind shield strip is greater than the axial deviation amplitude of the sliding bearing 3, so that the wind shield strip 7 and the wind shield ring plate 5 can always maintain a matching relationship without air leakage; and compared with the traditional wind shield ring, the fan ring plate 6 and the wind shield ring plate 5 are radially matched, and when the rotating shaft 2 undergoes axial movement, the fan 4 will not rub against the wind shield ring plate 5, thereby avoiding damage to the fan.

[0029] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A motor air-cooling heat dissipation structure, comprising a motor housing (1), a rotating shaft (2), a sliding bearing (3), a fan (4) and a wind shielding ring plate (5), wherein: The rotating shaft (2) is mounted on the motor housing (1) by means of a sliding bearing (3); a fan (4) is mounted on the rotating shaft (2); a fan ring plate (6) is arranged on the blades of the fan (4); a windshield strip (7) is arranged on the outer side of the fan ring plate (6); a windshield ring plate (5) is arranged inside the motor housing (1); a positioning hole (8) capable of cooperating with the windshield strip (7) is opened in the middle of the windshield ring plate (5).

2. The motor air-cooling heat dissipation structure according to claim 1 is characterized in that: The wind shield ring plate (5) is in a stepped shape, a fixing ring (9) is provided on the outside of the wind shield ring plate (5), the fixing ring (9) is connected to the motor housing (1), and a connecting ring plate (10) inclined to one side is provided between the inner ring and the outer ring of the wind shield ring plate (5).

3. The motor air-cooling heat dissipation structure according to claim 1 is characterized in that: An air cooling channel (11) is provided on the upper side of the motor housing (1), and a cooler (12) is provided on the upper side of the motor housing (1).

4. The motor air-cooling heat dissipation structure according to claim 1 is characterized in that: The fan (4) comprises a shaft sleeve (13); a shaft shoulder (14) capable of matching with the shaft sleeve (13) and a slot for assembling a shaft elastic retaining ring (15) are provided on the rotating shaft (2); one side of the shaft sleeve (13) is fixed by means of the shaft shoulder (14), and the other side is fixed by means of the shaft elastic retaining ring (15); the shaft sleeve (13) and the rotating shaft (2) are connected and fixed by means of an interference fit.

5. The motor air-cooling heat dissipation structure according to claim 1 is characterized in that: The width of the windshield strip (7) is 5-10 mm.

6. The motor air-cooling heat dissipation structure according to claim 1 is characterized in that: The distance between the wind shield strip (7) and the positioning hole (8) is 1-2 mm.

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