CN218183131U - End cover structure, motor using same and bus - Google Patents

Abstract

The utility model belongs to the technical field of motor end covers, and relates to an end cover structure, a motor using the end cover structure and a bus; the end cover structure comprises an end cover body sleeved on the rotating shaft, a positioning groove is arranged on the outer end face of the end cover body around the rotating shaft, a radial groove is formed in the end cover body along the side wall of the positioning groove, and a blocking assembly is arranged in the radial groove; the blocking assembly comprises a telescopic unit and an elastic unit, the telescopic unit and the elastic unit are sequentially arranged in the radial groove along the direction from the center of the far away rotating shaft to the center of the near rotating shaft, and the elastic unit extends out of the radial groove and then is fixed on the rotating shaft. The utility model discloses a flexible unit and elastic element's cooperation realizes the sealed of countershaft, and direct isolated inside oil blanket or lubricating oil and external contact have improved sealing performance, have avoided leading to inside a large amount of pondings of hoarding and the problem that causes motor insulation badly of silt because of sealed effect is not good.

Description

End cover structure, motor using same and bus

Technical Field

The utility model belongs to the technical field of the motor end cover, a end cover structure, use its motor and bus is related to.

Background

In the electrical industry, oil seals are mechanical elements used to seal oil (oil is the most common liquid substance in transmission systems, also generally referred to as a general liquid substance), which separates the parts of the transmission parts that need to be lubricated from the output parts, so as not to allow the penetration of lubricating oil.

In the industry of a motor of a bus, the motor frequently moves due to the fact that the working environment of the bus is severe, so that slight displacement change exists between a motor oil seal and a rotor, and a gap is generated; at the in-process that the big bus was gone, when silt splashes, this silt can splash to the gap in, simultaneously, this gap also can lead to the motor to intake, can lead to the contact of motor oil blanket and rotor shaft to weaken after long-time operation to influence the sealing performance of oil blanket. When the water inlet and the mud splashing of the motor are slow, a large amount of accumulated water and mud are accumulated in the motor when the feedback of a client is abnormal, the motor is poor in insulation, the bearing is corroded, serious after-sale abnormality is caused, the cost of the motor is improved invisibly, and the reliability of the client on the motor is reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an end cover structure, use its motor and bus has realized the sealed of counter shaft through the cooperation of flexible unit and elastic element, avoids intaking or silt in the clearance between pivot and the end cover.

In order to solve the above problem, according to an aspect of the present application, an embodiment of the present invention provides an end cover structure, where the end cover structure includes an end cover body sleeved on a rotating shaft, a positioning groove is arranged on an outer end surface of the end cover body around the rotating shaft, a radial groove is arranged on the end cover body along a side wall of the positioning groove, and a blocking component is arranged in the radial groove; the blocking assembly comprises a telescopic unit and an elastic unit, the telescopic unit and the elastic unit are sequentially arranged in the radial groove along the direction from the center of the far away rotating shaft to the center of the near rotating shaft, and the elastic unit extends out of the radial groove and then is fixed on the rotating shaft.

In some embodiments, the barrier assembly further comprises a first rigid unit, the first rigid unit is arranged close to the groove bottom and the side wall of the radial groove, and one end of the first rigid unit, which is far away from the groove bottom, forms a recess; the end of the telescopic unit abuts against the recess.

In some embodiments, the barrier assembly further comprises a second rigid unit located between the telescoping unit and the resilient unit.

In some embodiments, the length of the second rigid unit in the axial direction is greater than the length of the elastic unit in the axial direction, so that one end of the second rigid unit close to the elastic unit can wrap and fix the elastic unit.

In some embodiments, the elastic unit includes a first elastic member and a second elastic member, one end of the first elastic member is fixed to the second rigid unit, and the other end of the first elastic member is connected to the second elastic member; and the hardness of the second elastic member is higher than that of the first elastic member.

In some embodiments, the second elastic member is in transition fit with the rotating shaft; and the hardness of the second elastic piece is less than that of the rotating shaft.

In some embodiments, the rotating shaft has a fitting position, and an end of the second elastic member away from the first elastic member is located in the fitting position.

In some embodiments, an oil seal is disposed in the positioning groove, the oil seal is sleeved on the rotating shaft, and the blocking component can seal the oil seal in the positioning groove.

In some embodiments, the front end of the shaft is provided with a chamfer.

In order to solve the above problem, according to another aspect of the present application, an embodiment of the present invention provides an electric motor including the above end cover structure.

In order to solve the above problem, according to another aspect of the present application, an embodiment of the present invention provides a bus, including the above-mentioned motor.

Compared with the prior art, the utility model discloses an end cover structure has following beneficial effect at least:

the end cover body of the utility model is provided with a radial groove, a baffle component is arranged in the radial groove, the baffle component comprises a telescopic unit and an elastic unit, the telescopic unit and the elastic unit are sequentially arranged in the radial groove along the direction from the center of the rotating shaft to the center, and the elastic unit extends out of the radial groove and then is fixed on the rotating shaft; like this, realize the sealed of countershaft through the cooperation of expansion unit and elastic element, direct isolated inside oil blanket or lubricating oil and external contact have improved sealing performance, have avoided leading to motor inside to hoard a large amount of ponding and silt and cause the problem of motor insulation badly because of sealed effect is not good.

On the other hand, the utility model provides a motor is based on above-mentioned end cover structure and designs, and its beneficial effect sees above-mentioned end cover structure's beneficial effect, here, differs one and gives unnecessary details.

On the other hand, the utility model provides a bus designs based on above-mentioned motor, and its beneficial effect sees the beneficial effect of above-mentioned motor, here, differs one and gives unnecessary and describe repeatedly.

The above description is only an outline of the technical solution of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the specification, the following detailed description will be given of preferred embodiments of the present invention in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a cross-sectional view of an end cap structure provided by an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a front view of an end cap structure provided by an embodiment of the present invention;

fig. 4 is another cross-sectional view of an end cap construction provided by an embodiment of the present invention;

FIG. 5 is a partial enlarged view at B in FIG. 4;

fig. 6 is another front view of an end cap structure provided by an embodiment of the present invention;

fig. 7 is a front view of a baffle assembly in an end cap structure according to an embodiment of the present invention.

Wherein:

1. a rotating shaft; 2. an end cap body; 3. a barrier assembly; 4. oil sealing; 5. screw holes; 6. a cover plate; 31. a telescopic unit; 32. an elastic unit; 33. a first rigid unit; 34. a second rigid unit; 301. an elastic structure; 302. a rigid structure; 321. a first elastic member; 322. a second elastic member.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments, in order to explain the detailed embodiments, structures, features and effects of the present invention. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present invention, it is to be understood that the terms "first", "second", and the like in the description and in the claims, as well as in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "horizontal," and the like refer to an orientation or positional relationship relative to an orientation or positional relationship shown in the drawings, which are used for convenience in describing the present invention, and do not imply that the referenced device or element must have a particular orientation or position, and therefore should not be considered as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Example 1

The embodiment provides an end cover structure, as shown in fig. 1-3, the end cover structure includes an end cover body 2 sleeved on a rotating shaft 1, a positioning groove is arranged on an outer end surface of the end cover body 2 around the rotating shaft 1, a radial groove is arranged on the end cover body along a side wall of the positioning groove, and a blocking component 3 is arranged in the radial groove; the blocking component 3 comprises a telescopic unit 31 and an elastic unit 32, the telescopic unit 31 and the elastic unit 32 are sequentially arranged in a radial groove along the direction from the center far away from the rotating shaft 1 to the center, and the elastic unit 32 extends out of the radial groove and then is fixed on the rotating shaft 1.

Specifically, there is the round hole at end cover body 2 center, and pivot 1 is located this round hole, and pivot 1 and end cover body 2 all are rigid structure, in order to avoid end cover body 2 to influence the rotation of pivot 1, generally all can be gapped between end cover body 2 and the pivot 1, and this clearance can lead to water or silt to get into the motor in, influences the normal work of motor. This embodiment is provided with the constant head tank around pivot 1 on the outer terminal surface of end cover body 2, can place the oil blanket in this constant head tank, also can not put the oil blanket, mainly depend on the fender area and the sealed effect that separate fender subassembly 3, be provided with in this constant head tank and separate fender subassembly 3, keep off subassembly 3 including expanding unit 31 and elastic unit 32 in this embodiment, at the in-process of assembly, elastic unit 32's end and pivot 1 transition fit, it is less than pivot 1's rigidity to inject the terminal rigidity of elastic unit 32 this moment, then at the in-process of pivot 1 work, the size of elastic unit 32 transition is worn and torn, and then realize the zero cooperation contact of elastic unit 32 and pivot, avoid transition cooperation rear end cover body 2 to influence the rotation of pivot 1, also avoid clearance fit to lead to the inside a large amount of ponding of motor and silt to cause the problem of motor insulation failure.

In a specific embodiment: the baffle component 3 further comprises a first rigid unit 33, the first rigid unit 33 is arranged close to the groove bottom and the side wall of the radial groove, and a recess is formed at one end of the first rigid unit 33, which is far away from the groove bottom; the end of the telescopic unit 31 abuts in the recess.

Wherein, the first rigid unit 33 is made of metal material, such as 45 # steel; more specifically, the first rigid unit 33 in this embodiment is a U-shaped structure, and includes a bottom surface and two side surfaces, the bottom surface is disposed closely to the bottom of the radial groove, and the two side surfaces are disposed closely to the two side walls of the radial groove respectively; in this way, a recess is formed in the first rigid unit 33, and the end of the telescopic unit 31 abuts against the recess, so that the first rigid unit 33 can be provided to improve the strength of the entire cover structure.

In addition, the telescopic unit 31 is an annular structure, the radial section of the telescopic unit can be a telescopic rod structure, and the telescopic unit comprises a first telescopic rod and a second telescopic rod, the inner diameter of the first telescopic rod is not less than the outer diameter of the second telescopic rod, and the first telescopic rod is connected to the outer surface of the second telescopic rod in a sliding manner; and, first telescopic link internal surface has the recess, and the second telescopic link surface has the arch, and the second telescopic link slides in first telescopic link, and when arch and recess joint were in the same place, the extending structure that first telescopic link and second telescopic link are constituteed had the biggest diameter.

Of course, the telescopic unit 31 may also be a spring, the telescopic unit 31 having the largest diameter when the spring is in the released state.

In a specific embodiment: the barrier assembly 3 further comprises a second rigid unit 34, the second rigid unit 34 being located between the telescopic unit 31 and the resilient unit 32. Specifically, the second rigid unit 34 is made of a metal material, such as 45 # steel, and is located between the telescopic unit 31 and the elastic unit 32, so that the overall strength of the end cover structure can be effectively increased; the length of the second rigid unit 34 in the axial direction is greater than the length of the elastic unit 32 in the axial direction, so that one end of the second rigid unit 34 near the elastic unit 32 can wrap and fix the elastic unit 32.

The second rigid unit 34 has various specific configurations, one of which is: the second rigid unit 34 is a double-layer structure and comprises an inner layer and an outer layer, wherein the inner layer is a solid columnar or prismatic structure, the outer layer is a hollow columnar or prismatic structure, the outer layer is sleeved on the inner layer, the first end of the outer layer is flush with the first end of the inner layer, and the second end of the outer layer extends out of the second end of the inner layer; the first end of the outer layer and the first end of the inner layer are in flush butt joint with the telescopic unit 31, the second end of the outer layer extends out of the second end of the inner layer to form a U-shaped gap, one end of the elastic unit 32 is just located in the U-shaped gap, and then the elastic unit 32 and the second rigid unit 34 are fixed together through screws or other means.

In a specific embodiment: the elastic unit 32 comprises a first elastic member 321 and a second elastic member 322, one end of the first elastic member 321 is fixed with the second rigid unit 34, and the other end of the first elastic member 321 is connected with the second elastic member 322; and the hardness of the second elastic member 322 is higher than that of the first elastic member 321.

Specifically, the first elastic element 321 and the second elastic element 322 may be made of rubber, and the hardness of the rubber may be adjustable. The first elastic element 321 has low hardness, and can be bent to a certain extent without being bent or broken; the hardness of the second elastic member 322 is higher than that of the first elastic member 321, and the hardness of the second elastic member 322 can be lower than that of the rotating shaft 1 or higher than that of the rotating shaft 1, so as to select whether the second elastic member 322 or the rotor shaft is worn.

Wherein, the second elastic member 322 is in transition fit with the rotating shaft 1; and the hardness of the second elastic member 322 is less than that of the rotation shaft 1. This wears away the second resilient element 322 so that, in theory, zero mating contact is achieved when the transition size wear is over.

In a specific embodiment: the rotating shaft 1 has a fitting position, and one end of the second elastic member 322 far away from the first elastic member 321 is located in the fitting position; the fitting position is a groove formed along the circumferential surface of the rotating shaft 1, and the groove is matched with the shape of one end of the second elastic member 322 far away from the first elastic member 321; in the working process of the motor, the second elastic element 322 is tightly matched with the groove, so that a better sealing effect is achieved.

Certainly, the blocking assembly 3 has other structural forms, as shown in fig. 4-7, the blocking assembly 3 includes a retainer ring structure and a cover plate, the cover plate is fixed on the end cover body through screws, the retainer ring structure includes an elastic structure 301 and a rigid structure 302, the elastic structure 301 is U-shaped and is arranged close to the radial groove, one end of the rigid structure 302 is clamped in the gap of the elastic structure 301, and the other end of the rigid structure 302 is matched with the rotating shaft 1;

more specifically, the elastic structure 301 may be made of graphite or a flexible material with a low friction coefficient, and the rigid structure 302 may be made of metal; the rigid structure 302 and the elastic structure 301 are integrated, the assembly of the rigid structure 302 and the elastic structure 301 belongs to interference fit, wherein the inner diameter of the rigid structure 302 and the fit size of the rotating shaft 1 adopt interference fit, the elastic structure 301 and the cover plate belong to slight interference fit and belong to small transition fit with the end cover body 2, the hardness of the elastic structure 301 is lower than that of the cover plate, the cover plate is locked on the end cover body 2 after the retainer ring structure is sleeved on the rotating shaft 1 in a hot mode, and therefore the oil seal 4 can be completely in a sealed state.

In addition, the assembly process of the baffle assembly 3 is as follows: the rigid structure 302 is sleeved on the rotating shaft 1 in a hot mode, so that sand and sand are prevented from contacting the lip of the oil seal 4, then the elastic structure 301 is sleeved on the rigid structure 302, and the cover plate is locked on the end cover body 2, so that the elastic structure 301 is slightly squeezed; in addition, the hardness of the elastic structure 301 in this embodiment is greater than that of the cover plate, so that the cover plate is worn in the working process, and the cover plate can be periodically updated.

In addition, in this embodiment, the end cover structure further includes a cover plate 6, the cover plate 6 has screw holes 5, and the cover plate 6 and the end cover body 2 can be fixed together by the cooperation of the screw holes 5 and the screws.

In a specific embodiment: be provided with oil blanket 4 in the constant head tank, the oil blanket 4 cover is established on pivot 1, and separates to keep off subassembly 3 and can seal oil blanket 4 in the constant head tank. Of course, if the baffle assembly 3 has larger baffle area and better sealing effect, no oil seal is needed, and the cost of the motor is indirectly reduced.

Specifically, the oil seal 4 is a common name of a general seal, simply called sealing of lubricating oil. It is a mechanical element used to seal oil (oil is the most common liquid substance in transmission systems, also generally referred to as a general liquid substance), and it isolates parts requiring lubrication from output parts in transmission parts, so as not to allow lubricating oil to penetrate.

In a specific embodiment: the front end of the rotating shaft 1 is provided with a chamfer, so that the rotating shaft 1 and the end cover body 2 are convenient to match.

Example 2

This embodiment provides a motor including the end cap structure of embodiment 1.

The motor that this embodiment provided, after having adopted the end cover structure among embodiment 1, can not adopt the oil blanket, but can realize the better sealed effect than the oil blanket, reduced the cost of motor, improved the reliability of motor.

Example 3

The present embodiment provides a bus including the motor of embodiment 2.

In summary, it is easily understood by those skilled in the art that the advantageous technical features described above can be freely combined and superimposed without conflict.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (11)

1. An end cover structure is characterized by comprising an end cover body sleeved on a rotating shaft, wherein a positioning groove is formed in the outer end face of the end cover body around the rotating shaft, a radial groove is formed in the end cover body along the side wall of the positioning groove, and a blocking component is arranged in the radial groove; the blocking assembly comprises a telescopic unit and an elastic unit, the telescopic unit and the elastic unit are sequentially arranged in the radial groove along the direction from the center of the rotating shaft to the center of the rotating shaft, and the elastic unit extends out of the radial groove and then is fixed on the rotating shaft.

2. The end cap structure of claim 1, wherein the baffle assembly further comprises a first rigid element disposed against the trough bottom and sidewalls of the radial groove, and wherein an end of the first rigid element distal from the trough bottom is recessed; the end of the telescopic unit is abutted in the recess.

3. An end cap arrangement according to claim 1 or 2, wherein the baffle assembly further comprises a second rigid element located between the telescopic element and the resilient element.

4. An end cap structure according to claim 3, wherein the length of the second rigid unit in the axial direction is greater than the length of the elastic unit in the axial direction, so that one end of the second rigid unit near the elastic unit can wrap and fix the elastic unit.

5. An end cap structure according to claim 3, wherein the elastic member includes a first elastic member and a second elastic member, one end of the first elastic member is fixed to the second rigid unit, and the other end of the first elastic member is connected to the second elastic member; and the second elastic member has a hardness higher than that of the first elastic member.

6. The end cap arrangement of claim 5, wherein the second resilient member is transition fit with the spindle; and the hardness of the second elastic piece is less than that of the rotating shaft.

7. An end cap arrangement according to claim 5, wherein the shaft has an engagement location thereon, and an end of the second resilient member remote from the first resilient member is located in the engagement location.

8. An end closure arrangement according to claim 1 or claim 2, wherein an oil seal is provided within the locating recess, the oil seal is provided on the shaft, and the barrier assembly is capable of sealing the oil seal in the locating recess.

9. An end cap arrangement according to claim 1 or claim 2, wherein the front end of the shaft is provided with a chamfer.

10. An electrical machine comprising an end cap arrangement according to any one of claims 1 to 9.

11. A bus comprising the motor of claim 10.

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