CN216794760U

CN216794760U - Dry-wet dual-purpose motor wind-guiding end cover structure and motor supporting device

Info

Publication number: CN216794760U
Application number: CN202123272600.8U
Authority: CN
Inventors: 韩敏
Original assignee: Suzhou Yongjie Motor Co ltd
Current assignee: Suzhou Yongjie Motor Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-06-21
Anticipated expiration: 2031-12-23

Abstract

The utility model relates to a wind-guiding end cover structure of a dry-wet dual-purpose motor, which comprises an end cover, wherein the end cover comprises an annular body, the annular body is provided with a central hole, and a plurality of special-shaped steps are arranged in the annular body along the circumferential direction of the annular body; a plurality of stiffening ribs are arranged along the radial direction of the annular body, and one end of each stiffening rib is connected with the special-shaped step in an abutting mode; the annular body is provided with a group of limiting seats, and the group of limiting seats are symmetrically arranged around the symmetry axis of the annular body; the annular body is provided with a positioning column, and the positioning column is arranged on a connecting line of the bottom central axis of a group of limiting seats. The utility model improves the air quantity and the vacuum degree of the motor and improves the temperature rise in a matching way.

Description

Dry-wet dual-purpose motor wind-guiding end cover structure and motor supporting device

Technical Field

The utility model relates to the technical field of series excited motors, in particular to a wind guide end cover structure of a dry-wet dual-purpose motor and a motor supporting device.

Background

Most of the existing motors in the field of series excitation dust collector motors are divided into a bracket type motor and a shell type motor, wherein the bracket type motor is divided into a dry type motor and a dry-wet type motor, so that the motor is suitable for different tool environments.

The dry and wet dual-purpose motor of posture is generally by the collection fan housing, cooling fan, upper bracket, stator, rotor, end cover, movable vane wheel, impeller housing etc. and wherein collection fan housing and cooling fan divide into two kinds again, one kind is last air-out (cooling fan is under), one kind is air-out down (cooling fan is last), because motor support spare is upper bracket and end cover constitution, so has following problem:

1. because the motor needs dry-wet separation, the upper side of the end cover is dry, and the lower side of the end cover is wet, the motor has higher waterproof requirement;

2. because the cooling air blows from the lower side to the upper side, and the cooling air of the rotating stator and the stator of the dry-wet motor completely depends on the cooling fan, the requirement on the utilization rate of the cooling air is high;

3. because the dry and wet motor usually runs under the wet condition and even the working condition of direct water absorption, the air quantity and the vacuum degree of the motor are both higher requirements;

4. because dry wet motor usually moves under the great state of load, lead to complete machine during operation rotational speed to reduce, the temperature rise can great promotion.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model discloses a wind guide end cover structure of a dry-wet dual-purpose motor and the motor.

The technical scheme adopted by the utility model is as follows:

a dry-wet dual-purpose motor wind-guiding end cover structure comprises an end cover, wherein the end cover comprises an annular body, the annular body is provided with a central hole, and a plurality of special-shaped steps are arranged in the annular body along the circumferential direction of the annular body; a plurality of stiffening ribs are arranged along the radial direction of the annular body, and one ends of the stiffening ribs are abutted to the special-shaped step; the annular body is provided with a group of limiting seats, and the group of limiting seats are symmetrically arranged about the symmetry axis of the annular body; the annular body is provided with a positioning column, and the positioning column is arranged on a connecting line of the bottom central axis of the group of limiting seats.

The method is further technically characterized in that: and a circle of annular bulge periphery is arranged in the annular body along the circumferential direction of the central hole.

The method is further technically characterized in that: and a clamping groove is formed in the periphery of the annular bulge.

The method is further technically characterized in that: and arranging a special-shaped notch outside the annular body along the circumferential direction of the annular body, wherein the shape of the special-shaped notch is the same as that of the special-shaped step, and the position of the special-shaped notch corresponds to that of the special-shaped step.

The method is further technically characterized in that: the special-shaped step comprises a head part, a middle part and a tail part which are integrally formed, the cross sectional area of the head part is smaller than that of the middle part and smaller than that of the tail part, and the connecting line of the edge of the head part, the edge of the middle part and the edge of the tail part is an arc line.

The method is further technically characterized in that: and the distance between every two adjacent special-shaped steps is the same.

The method is further technically characterized in that: the stiffening ribs are uniformly distributed in the annular body.

The method is further technically characterized in that: the height of the limiting seat is larger than the depth of the annular body.

A motor comprises the wind guide end cover structure of the dry-wet dual-purpose motor.

The method is further technically characterized in that: the dry-wet dual-purpose motor wind guide end cover structure is arranged between the dry-wet dual-purpose motor wind guide end cover structure and the wind collection cover, the grounding piece is attached to the cooling fan and the wind collection cover, the rotating shaft sequentially penetrates through the wind collection cover, the cooling fan, the dry-wet dual-purpose motor wind guide end cover structure and the rotating impeller, and one end of the rotating shaft is fixed on the rotating impeller through a nut; the framework is arranged in the wind collecting cover; the fixed seat is connected with the air collecting cover in an abutting mode.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. the end cover of the utility model is added with a step, so that water can not permeate to the upper measuring rotor part when the motor runs, and a good waterproof effect is achieved.

2. The end cover is provided with the installation position of the rotor-stator integrated grounding piece, so that the grounding piece is convenient to install.

3. The lower plane of the end cover is provided with the air guide veins, so that the circulating air between the movable impeller and the end cover is reduced, and the air quantity and the efficiency of the motor are improved.

4. The supporting device reduces the temperature rise of the rotor and the stator by adopting a mode of improving the utilization rate of cooling air through the cooling fan and the air collecting cover structure matched with the end cover.

5. The supporting device is matched with the impeller cover with the large air outlet, so that the running rotating speed of the motor is improved, the effect of improving the air quantity and the vacuum degree of the motor is achieved, and the temperature rise caused by the reduction of the rotating speed of the motor in the process of running under a large load is reduced.

6. The end cover structure of the utility model improves the air quantity of the motor by 3-5dm³And/s, the vacuum degree of the motor is improved by 1-2Kpa, the vibration of the motor can be effectively reduced by 3-5mm/s, and the temperature rise of the motor can be effectively reduced by 4-6K.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference will now be made in detail to the present disclosure, examples of which are illustrated in the accompanying drawings.

FIG. 1 is a schematic view of a first perspective of an end cap.

Fig. 2 is a schematic diagram of the end cap from a second perspective.

Fig. 3 is a top view of the end cap.

Fig. 4 is a schematic view of an assembly structure of the end cap.

Fig. 5 is an exploded schematic view of fig. 4.

Fig. 6 is a front view of fig. 4.

Fig. 7 is a top view of fig. 4.

Fig. 8 is a cross-sectional view taken at a-a in fig. 7.

The specification reference numbers indicate: 1. an impeller housing; 2. a movable impeller; 3. an end cap; 301. an annular body; 302. a special-shaped step; 303. a limiting seat; 304. a stiffening rib; 305. a positioning column; 306. a card slot; 307. an annular raised periphery; 308. a central bore; 309. a special-shaped notch; 4. a nut; 5. a gasket; 6. a bearing; 7. a cooling fan; 8. a wind collecting cover; 9. a ground plate; 10. a framework; 11. a rotating shaft; 12. a fixed seat.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of describing, but not limiting, the utility model, and moreover, like reference numerals designate like elements throughout the embodiments.

Referring to fig. 1 to 4, the wind-guiding end cover structure of the wet and dry dual-purpose motor comprises an end cover 3, wherein a Bulk Molding Compound (BMC) material can be selected as a manufacturing material of the end cover 3, the BMC material has low deformation, high strength and good stability, can reduce the vibration of the motor well, and is convenient to produce.

The end cover 3 comprises an annular body 301, a central hole 308 is formed in the annular body 301, a plurality of special-shaped steps 302 are arranged in the annular body 301 along the circumferential direction of the annular body 301, and therefore water cannot permeate the upward-measuring rotating stator part when the motor runs, and a good waterproof effect is achieved.

The plurality of stiffening ribs 304 are radially arranged along the annular body 301, one end of each stiffening rib 304 is abutted to the special-shaped step 302, the stiffening ribs 304 are arranged at the concentrated load position of the annular body 301, and the stability and the torsion resistance of the annular body 301 can be improved by the strip-shaped reinforcing piece which is arranged for ensuring the local stability of the component and transmitting the concentrated force.

The annular body 301 is provided with a set of limiting seats 303, and the set of limiting seats 303 are symmetrically arranged about the symmetry axis of the annular body 301. The annular body 301 is provided with a positioning column 305, and the positioning column 305 is arranged on a connecting line of central axes of the bottoms of the limiting seats 303. The positioning column 305 facilitates subsequent assembly of the cooling fan 7, and prevents the cooling fan 7 from displacing between the end cover 3 and the air collecting cover 8 and affecting the work of the motor.

A ring of annular raised periphery 307 is provided within the annular body 301 circumferentially of the central bore 308. The annular projection has a slot 306 at its periphery 307. The snap groove 306 further defines the mounting position of the cooling fan 7, thereby further securing the cooling fan 7 between the end cap 3 and the wind-collecting cover 8.

The annular body 301 is provided with a special-shaped notch 309 along the circumferential direction of the annular body 301, the shape of the special-shaped notch 309 is the same as that of the special-shaped step 302, and the position of the special-shaped notch 309 corresponds to that of the special-shaped step 302.

The lower plane of the annular body 301 is added with wind guide lines, so that circulating wind between the movable impeller 2 and the end cover 3 is reduced, and the wind quantity and the efficiency of the motor are improved.

With reference to fig. 5 to 8, a motor supporting device includes the above-mentioned dry-wet dual-purpose motor wind-guiding end cover structure, an impeller cover 1, a movable impeller 2, a cooling fan 7, a wind-collecting cover 8, a grounding piece 9, a framework 10, a rotating shaft 11 and a fixing seat 12, the movable impeller 2 is installed between the impeller cover 1 and the dry-wet dual-purpose motor wind-guiding end cover structure, the cooling fan 7 is installed between the dry-wet dual-purpose motor wind-guiding end cover structure and the wind-collecting cover 8, the grounding piece 9 is attached to the cooling fan 7 and the wind-collecting cover 8, the rotating shaft 11 sequentially penetrates through the wind-collecting cover 8, the cooling fan 7, the dry-wet dual-purpose motor wind-guiding end cover structure and the movable impeller 2, one end of the rotating shaft 11 further penetrates through a bearing 6, and the rotating shaft 11 is fixed on the movable impeller 2 through a nut 4. At the same time, a gasket 5 is installed between the nut 4 and the end cap 3, the gasket 5 to strengthen the seal between the nut 4 and the end cap 3. The frame 10 is installed in the wind-collecting cover 8. The fixed base 12 is abutted against the air collection cover 8.

The installation principle of the utility model is as follows:

through the structure of the cooling fan 7 and the wind collecting cover 8 matched with the end cover 3, the temperature rise of the rotor and the stator of the motor is reduced by adopting a mode of improving the utilization rate of cooling air.

And meanwhile, the impeller cover 1 with a large air outlet is matched to improve the running rotating speed of the motor, so that the effect of improving the air quantity and the vacuum degree of the motor is achieved, and the temperature rise caused by the reduction of the rotating speed of the motor in the process of running under a large load is reduced.

Because the reason that the motor operating mode is abominable, and with water direct contact, so the motor must increase grounding piece 9, and end cover 3 design has the mounted position of stator integral type grounding piece, and the installation is maintained conveniently.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.

Claims

1. The utility model provides a wet dual-purpose motor wind-guiding end cover structure futilely which characterized in that: the end cover comprises an end cover (3), wherein the end cover (3) comprises an annular body (301), the annular body (301) is provided with a central hole (308), and a plurality of special-shaped steps (302) are arranged in the annular body (301) along the circumferential direction of the annular body (301); a plurality of stiffening ribs (304) are arranged along the radial direction of the annular body (301), and one end of each stiffening rib (304) abuts against the special-shaped step (302); the annular body (301) is provided with a group of limiting seats (303), and the group of limiting seats (303) are symmetrically arranged relative to the symmetry axis of the annular body (301); the annular body (301) is provided with a positioning column (305), and the positioning column (305) is arranged on a connecting line of central axes of the bottoms of the group of limiting seats (303).

2. The wind-guiding end cover structure of a dry-wet dual-purpose motor as claimed in claim 1, wherein: a ring of annular raised periphery (307) is provided within the annular body (301) circumferentially of the central bore (308).

3. The wind-guiding end cover structure of a wet and dry dual-purpose motor as claimed in claim 2, wherein: and a clamping groove (306) is formed in the periphery (307) of the annular bulge.

4. The wind-guiding end cover structure of a dry-wet dual-purpose motor as claimed in claim 1, wherein: the special-shaped structure is characterized in that a special-shaped notch (309) is formed in the outer side of the annular body (301) along the circumferential direction of the annular body (301), the shape of the special-shaped notch (309) is the same as that of the special-shaped step (302), and the position of the special-shaped notch (309) corresponds to that of the special-shaped step (302).

5. The wind-guiding end cover structure of a dry-wet dual-purpose motor as claimed in claim 1, wherein: the special-shaped step (302) comprises a head part, a middle part and a tail part which are integrally formed, the cross sectional area of the head part is smaller than that of the middle part and smaller than that of the tail part, and the connecting line of the edge of the head part, the edge of the middle part and the edge of the tail part is an arc line.

6. The wind-guiding end cover structure of a dry-wet dual-purpose motor as claimed in claim 1, wherein: the distance between two adjacent special-shaped steps (302) is the same.

7. The wind-guiding end cover structure of a dry-wet dual-purpose motor as claimed in claim 1, wherein: the plurality of stiffening ribs (304) are uniformly distributed within the annular body (301).

8. The wind-guiding end cover structure of a dry-wet dual-purpose motor as claimed in claim 1, wherein: the height of the limiting seat (303) is larger than the depth of the annular body (301).

9. A motor support device characterized in that: the wind guide end cover structure of the wet and dry motor comprises the wind guide end cover structure of the claim 1.

10. The motor support apparatus of claim 9, wherein: the dry-wet dual-purpose motor wind-guiding end cover structure comprises an impeller cover (1), a movable impeller (2), a cooling fan (7), a wind-collecting cover (8), a grounding piece (9), a framework (10), a rotating shaft (11) and a fixing seat (12), wherein the movable impeller (2) is installed between the impeller cover (1) and the dry-wet dual-purpose motor wind-guiding end cover structure, the cooling fan (7) is installed between the dry-wet dual-purpose motor wind-guiding end cover structure and the wind-collecting cover (8), the grounding piece (9) is attached to the cooling fan (7) and the wind-collecting cover (8), the rotating shaft (11) sequentially penetrates through the wind-collecting cover (8), the cooling fan (7), the dry-wet dual-purpose motor wind-guiding end cover structure and the movable impeller (2), and one end of the rotating shaft (11) is fixed on the movable impeller (2) through a nut (4); the framework (10) is arranged in the wind collecting cover (8); the fixed seat (12) is connected with the wind collecting cover (8) in an abutting mode.