CN112260452B

CN112260452B - A protector and motor for motor

Info

Publication number: CN112260452B
Application number: CN202011093053.4A
Authority: CN
Inventors: 宋承林; 姜占光; 丁铮; 孙即明
Original assignee: Qingdao CCS Electric Corp
Current assignee: Qingdao CCS Electric Corp
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2022-12-20
Anticipated expiration: 2040-10-13
Also published as: CN112260452A

Abstract

The present invention relates to a protector for a motor and a motor, the motor including a motor cover disposed at an end of the motor, the motor cover having a rotation shaft passing hole for passing a rotation shaft of the motor and a plurality of vents formed around the rotation shaft passing hole, wherein the protector may include: the dustproof assembly is arranged in a ventilation opening of the motor end cover so as to prevent dust of the motor; and/or a waterproof assembly connected with the motor end cover to waterproof the motor. According to the protective device for the motor, the vent is arranged on the end cover, so that the axial cooling of the heating element in the motor can be realized, and the heat dissipation effect can be improved. In addition, the dustproof cotton is arranged in the end cover, and the air inlet waterproof assembly is arranged in front of the end cover, so that the dustproof and waterproof functions can be effectively realized, and the motor protection device is simple to manufacture and convenient to install.

Description

A protector and motor for motor

Technical Field

The present disclosure relates generally to the field of electric machine construction. More specifically, the present disclosure relates to a guard for an electric machine and an electric machine.

Background

During operation of the motor, the stator and the rotor inside the motor generate a large amount of heat, which needs to be dissipated to the outside of the motor, so that air inlets and air outlets for heat dissipation need to be arranged on certain structures of the motor.

However, external substances such as rain water and dust may enter the motor through the air inlet/outlet, and the external substances may damage parts inside the motor, thereby preventing the motor from operating. Therefore, it is necessary to develop a protection device for a motor to improve a problem that foreign materials may enter the motor through an air inlet and an air outlet of the motor.

Disclosure of Invention

An object of this disclosure is to provide a protector for motor to improve the problem that foreign matter gets into the motor from the business turn over wind gap of motor.

In a first aspect, a guard for an electric machine according to an exemplary embodiment of the present disclosure includes a motor end cover disposed at an end of the electric machine, the motor end cover having a rotation shaft passing hole for passing a rotation shaft of the electric machine and a plurality of ventilation openings formed around the rotation shaft passing hole, wherein the guard may include: the dustproof assembly is arranged in a ventilation opening of the motor end cover so as to prevent dust of the motor; and/or a waterproof assembly connected with the motor end cover to waterproof the motor.

In an exemplary embodiment, the dust prevention assembly may include: the inner bushing is connected with the ventilation opening of the motor end cover and is provided with a concave part which is concave towards the inside of the motor, and a plurality of ventilation holes are formed in the concave part; and dust-proof cotton which is arranged in the concave part of the inner bushing and covers the ventilation hole of the concave part so as to prevent dust of the motor.

In an exemplary embodiment, the waterproof assembly may include: a frame having a polygonal shape; an inner plate connected to a first end of the frame, the inner plate being formed with an inner plate center hole formed at a center portion thereof and a plurality of air flow holes for allowing air to enter a vent of a motor end cover; an outer panel connected to a second end of the frame, the outer panel being formed with an outer panel center hole formed at a center portion thereof and a plurality of waterproof vent holes that protrude outward and open downward for passing air and being waterproof; a peripheral plate connected to an outer circumferential surface of the frame to close an outer circumferential surface of the waterproof assembly; and an inner surrounding plate having a cylindrical shape and connected with the inner plate center hole and the outer plate center hole to close an inner circumferential surface of the waterproof assembly.

In an exemplary embodiment, the frame may include: a pair of frame pieces arranged at intervals, each frame piece comprising a plurality of equilateral angle steels connected end to form a hexagonal shape; and the two ends of the fixing column are respectively connected with the pair of framework pieces, so that the pair of framework pieces and the fixing column are combined together.

In an exemplary embodiment, the fixing post may have an inner step hole formed therein for passing a screw therethrough to connect the waterproof assembly to the motor cover.

In an exemplary embodiment, the waterproof assembly may further include: and the water drainage groove is arranged at the bottom of the waterproof component so as to drain water entering the waterproof component.

In an exemplary embodiment, the drain groove may be formed by removing a peripheral plate attached to the bottom of the frame.

In an exemplary embodiment, the inner shroud may be located radially inward of the vent opening of the motor end cover such that the water resistant assembly completely covers the vent opening.

In an exemplary embodiment, the air flow holes of the inner panel may be positioned to correspond to the positions of the vent holes of the inner liner, so as to facilitate air circulation.

In a second aspect, the present disclosure also provides an electric machine, which may include: a motor cover disposed at an end of the motor, the motor cover having a rotation shaft passing hole for passing a rotation shaft of the motor and a plurality of ventilation openings formed around the rotation shaft passing hole; and a guard as described above in the first aspect and its various embodiments.

This disclosed a protector for motor is through setting up the vent on the end cover, can realize the axial cooling to the inside heating element of motor to can improve the radiating effect. In addition, this disclosed a protector for motor is through setting up dustproof cotton in the end cover and set up the waterproof subassembly of air inlet before the end cover, can play dustproof and waterproof effect effectively, and it is simple to make, simple to operate.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to like or corresponding parts and in which:

fig. 1 is a sectional view illustrating a motor having a guard for the motor according to an exemplary embodiment of the present disclosure;

fig. 2 is a side view illustrating a motor having a guard for the motor according to an exemplary embodiment of the present disclosure;

fig. 3 is an exploded perspective view illustrating a guard for a motor according to an exemplary embodiment of the present disclosure;

fig. 4 is a perspective view illustrating a motor end cover of a guard for a motor according to an exemplary embodiment of the present disclosure;

fig. 5 is a perspective view illustrating an inner bushing of a guard for a motor according to an exemplary embodiment of the present disclosure;

fig. 6 is a front view illustrating a waterproof assembly of a guard for a motor according to an exemplary embodiment of the present disclosure;

fig. 7 is a perspective sectional view illustrating a waterproof assembly of a shield apparatus for an electric machine according to an exemplary embodiment of the present disclosure;

fig. 8 is an exploded perspective view illustrating a waterproof assembly of a guard for a motor according to an exemplary embodiment of the present disclosure;

fig. 9 is a sectional view illustrating a waterproof assembly of a shield apparatus for an electric machine according to an exemplary embodiment of the present disclosure; and

fig. 10 is a perspective view illustrating a fixing post of a guard for a motor according to an exemplary embodiment of the present disclosure.

Detailed Description

Technical solutions in embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments obtained by a person skilled in the art based on the embodiments in the present disclosure without making any creative efforts shall fall within the protection scope of the present disclosure.

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

Fig. 1 is a sectional view illustrating a motor having a guard for a motor according to an exemplary embodiment of the present disclosure, fig. 2 is a side view illustrating the motor having the guard for a motor according to an exemplary embodiment of the present disclosure, fig. 3 is an exploded perspective view illustrating the guard for a motor according to an exemplary embodiment of the present disclosure, and fig. 4 is a perspective view illustrating a motor end cover of the guard for a motor according to an exemplary embodiment of the present disclosure.

As shown in fig. 1, 2, 3 and 4, an exemplary embodiment of the present disclosure provides a guard for a motor, the motor 10 including a motor end cover 100, the motor end cover 100 being disposed at an end of the motor 10, the motor end cover 100 having a rotation shaft passing hole 110 for passing a rotation shaft of the motor and a plurality of ventilation openings 120 formed around the rotation shaft passing hole 110, wherein the guard may include: a dust-proof assembly 200 disposed in the ventilation opening 120 of the motor end cover 100 to prevent dust of the motor; and/or a waterproof assembly 300 coupled to the motor end cover 100 to waterproof the motor. The protector for the motor according to the present exemplary embodiment may improve a ventilation and heat dissipation effect and may secure the strength of the motor end cover 100 while reducing the weight.

Fig. 5 is a perspective view illustrating an inner bushing of a guard for a motor according to an exemplary embodiment of the present disclosure.

In an exemplary embodiment, as shown in fig. 3 and 5, the dust prevention assembly 200 may include: an inner liner 210 connected to the vent 120 of the motor end cover 100 and having a recessed portion recessed toward the inside of the motor 10, the recessed portion being formed with a plurality of vent holes; and dust-proof cotton 220 disposed in the concave portion of the inner bushing 210 and covering the ventilation holes of the concave portion to prevent dust of the motor 10. In particular, the inner liner 210 may be coupled to the vent 120 of the machine end cover 100 by welding. In the exemplary embodiment, the inner liner 210 may be embedded with dust-proof cotton 220, which not only has better dust-proof effect, but also is convenient for disassembly and maintenance.

Fig. 6 is a front view illustrating a waterproof assembly of a guard for a motor according to an exemplary embodiment of the present disclosure, fig. 7 is a perspective cross-sectional view illustrating the waterproof assembly of the guard for a motor according to an exemplary embodiment of the present disclosure, and fig. 8 is an exploded perspective view illustrating the waterproof assembly of the guard for a motor according to an exemplary embodiment of the present disclosure.

In an exemplary embodiment, as shown in fig. 6, 7 and 8, the waterproof assembly 300 may include: a frame 310 having a polygonal shape; an inner plate 320 connected to a first end of the frame 310, the inner plate 320 being formed with an inner plate center hole 321 and a plurality of air flow holes 322, the inner plate center hole 321 being formed at a center portion of the inner plate 320, the air flow holes 322 for allowing air to enter the air vents 120 of the motor end cover 100; an outer plate 330 connected to a second end of the frame 310, the outer plate 330 being formed with an outer plate central hole 331 and a plurality of waterproof vents 332, the outer plate central hole 331 being formed at a central portion of the outer plate 330, the waterproof vents 332 being outwardly projected and opening downward for passing air and being waterproof; a peripheral plate 340 connected to an outer circumferential surface of the frame 310 to close an outer circumferential surface of the waterproof assembly 300; and an inner surrounding plate 350 having a cylindrical shape and connected to the inner plate central hole 321 and the outer plate central hole 331 to close an inner circumferential surface of the waterproof assembly 300. In particular, watertight vent 332 may be formed in the form of a louvered watertight vent, and may be a strip-shaped hole.

Fig. 9 is a sectional view illustrating a waterproof assembly of a guard for a motor according to an exemplary embodiment of the present disclosure, and fig. 10 is a perspective view illustrating a fixing post of the guard for a motor according to an exemplary embodiment of the present disclosure.

In an exemplary embodiment, as shown in fig. 8, 9 and 10, the frame 310 may include: a pair of frame pieces 311, the frame pieces 311 being arranged at intervals from each other, each frame piece 311 including a plurality of equilateral angle steels connected end to form a hexagonal shape; and fixing posts 312, both ends of which are respectively connected with the pair of frame pieces 311, so that the pair of frame pieces 311 and the fixing posts 312 are firmly combined together, thereby enhancing the strength of the waterproof assembly 300.

In another exemplary embodiment, as shown in fig. 6, 7, 8 and 9, the inner plate 320 and the outer plate 330 of the waterproof assembly 300 are also connected to both ends of the fixing post 312, respectively, and mounting holes through which both ends of the fixing post are exposed to the outside of the waterproof assembly 300 are formed in the inner plate 320 and the outer plate 330. Further, the fixing posts 312 may be disposed at portions of the frame pieces 311 where the equal angle steels are connected to each other, and may also be disposed around the inner panel 350.

In the present exemplary embodiment, the frame 310 of the waterproof assembly 300 may be welded and molded by a pair of frame pieces 311 and fixing posts 312, the frame pieces 311 may be spliced by equal angle steel, and the waterproof assembly 300 may have high strength and small weight by connecting the pair of frame pieces 311 and the inner and

outer panels

320 and 330 using the fixing posts 312. Further, the inner plate 320, the outer plate 330, and the peripheral plate 340 may be welded to the frame 310, and the inner peripheral plate 350 is welded to the inner plate 320 and the outer plate 330 to form a central hole for passing through the motor shaft.

In an exemplary embodiment, as shown in fig. 10, the fixing post 312 may have an inner step hole formed therein for passing a screw therethrough to connect the waterproof assembly 300 to the motor cover 100. Specifically, a screw hole may be provided on the motor end cover 100, and an inner step hole into which a screw may be inserted and coupled with the screw hole on the motor end cover 100 may be formed in the fixing post 312, thereby coupling the waterproof assembly 300 to the motor end cover 100. In the present exemplary embodiment, the fixing posts 312 may not only serve to increase strength, but also serve as a connection structure of the waterproof assembly 300.

In an exemplary embodiment, as shown in fig. 7, the waterproof assembly 300 may further include: and a drain tank 360 disposed at the bottom of the waterproof unit 300 to drain water introduced into the waterproof unit 300. In an exemplary embodiment, the drain groove 360 may be formed by removing a peripheral plate attached to the bottom of the frame 310.

In an exemplary embodiment, as shown in fig. 1, the inner shroud 350 may be located inside the vent 120 of the motor end cover 100 in a radial direction such that the waterproof assembly 300 completely covers the vent 120. In an exemplary embodiment, as shown in fig. 3 and 8, the positions of the air flow holes 322 of the inner plate 320 may correspond to the positions of the vent holes of the inner liner 210 to facilitate air circulation.

The operation of the guard for an electric machine of the present disclosure is described below with reference to fig. 1 to 10.

As shown in fig. 1 to 10, when the motor is operated, a negative pressure is formed at the vent 120 of the motor end cover 100, and rainwater on the upper portion of the motor and rainwater at the front end of the waterproof assembly 300 may enter the interior of the waterproof assembly 300 through the outer plate 330 of the waterproof assembly 300. Since the openings of the waterproof vents 332 of the outer plate 330 face downward, the entering rainwater is less, and the axial pressure applied to the rainwater is also less, most of the rainwater flows downward along the inner wall of the outer plate 330 and flows out through the drainage grooves 360 at the bottom of the waterproof assembly 300, so as to realize drainage. In addition, a small amount of rainwater may reach the inner plate 320 through the outer plate 330, and this rainwater is filtered by the air flow holes 322 of the inner plate 320, and the rainwater flows downward and also flows out through the drainage groove at the bottom of the waterproof module 300. In addition, if a small amount of rainwater passes through the inner and

outer plates

320 and 330 of the waterproof assembly 300 in succession, it enters the inner bushing 210, and since the four sides of the inner bushing 210 are higher than the inner peripheral plate 350 of the waterproof assembly 300, rainwater still flows out of the inner bushing 210, so that the waterproof function can be achieved. Further, in order to achieve the purpose of dust prevention, an insulating member having a dust prevention function, such as dust cotton 220, may be embedded in the inner liner 210, so that the functions of dust prevention, sand prevention, and the like may be achieved.

Furthermore, the present disclosure also provides a motor, which may include: a motor cover disposed at an end of the motor, the motor cover having a rotation shaft passing hole for passing a rotation shaft of the motor and a plurality of ventilation openings formed around the rotation shaft passing hole; and a guard as described in accordance with various exemplary embodiments of the present disclosure.

The protective device for the motor can realize axial cooling of the heating element inside the motor by arranging the ventilation opening on the end cover, so that the heat dissipation effect can be improved. In addition, this disclosed a protector for motor sets up the waterproof subassembly of air inlet through set up dustproof cotton in the end cover and set up in front of the end cover, can play dustproof and waterproof's effect effectively, makes simply simple to operate.

In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected" should be construed broadly unless otherwise explicitly specified or limited. For example, with the term "coupled", it can be fixed, removable, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present disclosure according to specific situations.

In light of the foregoing description of the present specification, those skilled in the art will also understand that terms used herein, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "lateral," "clockwise," or "counterclockwise," etc., indicate that such terms are based on the orientations and positional relationships illustrated in the drawings of the present specification, and are intended merely for convenience in describing the aspects of the present disclosure and for simplicity in description, and are not intended to indicate or imply that the devices or elements involved must have the particular orientations, be constructed in the particular orientations, and be operated, and therefore such terms are not to be interpreted or construed as limiting the aspects of the present disclosure.

In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal numbers only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "plurality" means at least two, for example, two, three or more, and the like, unless explicitly specified otherwise.

While various embodiments of the present disclosure have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present disclosure. It should be understood that various alternatives to the embodiments of the disclosure described herein may be employed in practicing the disclosure. It is intended that the following claims define the scope of the disclosure and that the module compositions, equivalents, or alternatives falling within the scope of these claims be covered thereby.

Claims

1. A guard for an electric machine, the electric machine including a machine end cap disposed at an end of the electric machine, the machine end cap having a shaft passing hole for passing a motor shaft and a plurality of vents formed around the shaft passing hole, wherein the guard comprises:

the dustproof assembly is arranged in a ventilation opening of the motor end cover so as to prevent dust of the motor; and

the waterproof assembly is arranged in front of the motor end cover and connected with the motor end cover so as to prevent the motor from being waterproofed;

the dust-proof assembly includes:

an inner bushing connected with the vent of the motor end cover and having a concave portion recessed toward the inside of the motor, the concave portion being formed with a plurality of vent holes; and

a dust-proof cotton disposed in the recessed portion of the inner bushing and covering the vent hole of the recessed portion to protect the motor from dust;

the waterproof assembly includes:

a frame;

an inner plate connected to a first end of the frame, the inner plate being formed with an inner plate center hole formed at an inner plate center portion and a plurality of air flow holes for allowing air to enter a vent of a motor end cover;

an outer panel connected to a second end of the frame, the outer panel being formed with an outer panel center hole formed at a center portion thereof and a plurality of waterproof vent holes;

a peripheral plate connected to an outer circumferential surface of the frame to close an outer circumferential surface of the waterproof assembly;

an inner surrounding plate having a cylindrical shape and connected to an inner plate central hole and an outer plate central hole to close an inner circumferential surface of the waterproof assembly;

the inner plate and the outer plate are distributed at intervals along the axial direction of the motor rotating shaft so as to form an interval in the waterproof assembly, and the interval is communicated with the waterproof vent hole and the air flow through hole; and

and the water drainage groove is arranged at the bottom of the waterproof component and communicated with the interval so as to discharge water entering the waterproof component.

2. The guard of claim 1, wherein the frame has a polygonal shape;

the waterproof vent hole protrudes outward and opens downward for air to pass through and is waterproof.

3. The guard of claim 2, wherein the frame comprises:

a pair of frame pieces arranged at intervals, each frame piece comprising a plurality of equilateral angle steels connected end to form a hexagonal shape; and

and the two ends of the fixed column are respectively connected with the pair of framework pieces, so that the pair of framework pieces and the fixed column are combined together.

4. The guard of claim 3, wherein the fixing post has an internal step hole formed therein for passing a screw to connect a water resistant assembly to a motor end cap.

5. The guard of claim 1, wherein the drain channel is formed by removing a peripheral plate attached to a bottom of the frame.

6. The guard of claim 1, wherein the inner shroud is positioned radially inward of a vent opening of a motor end cover such that a water resistant assembly completely covers the vent opening.

7. The protector of claim 1, wherein the position of the air ventilation hole of the inner plate corresponds to the position of the ventilation hole of the inner liner to facilitate air ventilation.

8. An electric machine comprising:

a motor cover disposed at an end of the motor, the motor cover having a rotation shaft passing hole for passing a rotation shaft of the motor and a plurality of ventilation openings formed around the rotation shaft passing hole; and

guard according to any one of claims 1-7.