High-speed motor

Abstract

The utility model discloses a high-speed motor, which comprises a casing, a rotor, a first shaft sleeve, a front gland and a front end cover, a stator is arranged in the casing, and the casing is integrally cast and formed; the rotor is rotationally connected with the stator and is fixedly connected with a rotating shaft; the first shaft sleeve is detachably installed at the front end of the machine shell, and a first bearing is arranged in the first shaft sleeve. One side of the front gland abuts against the first shaft sleeve, and the other side of the front gland is provided with a first connecting groove. The front gland is sleeved with the front end cover, a second connecting groove is formed in the front gland, and the second connecting groove and the first connecting groove are connected in a clamped mode to form a labyrinth type sealing structure. Therefore, a user can conveniently replace the first bearing by disassembling the first shaft sleeve, the maintainability of the motor is improved, the labyrinth sealing structure can effectively seal the first bearing, dust and other impurities are prevented from entering the first bearing to cause damage, the service life of the bearing is prolonged, the operation stability of the motor is improved, and the shell is integrally cast and formed, so that the cost is reduced. And the overall stability of the motor is effectively enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely relates to a high speed motor. BACKGROUND

[0002] High speed motor is usually the motor that the rotating speed exceeds 10000r / min, has following advantages: first, the rotating speed is higher, the power density of motor is bigger, and the volume is smaller than the ordinary motor of same power level, can effectively save material, second, high speed motor can be connected directly with prime mover, spares traditional speed reduction mechanism, improves transmission efficiency and reduces noise, third, the rotational inertia of high speed motor is small, has faster dynamic response capability.

[0003] Although high speed motor has many advantages, but still has some technical deficiencies in practical application: in the motor assembly process, the interference fit is usually used between the internal bearing and the shell, can ensure better stability and precision, but also brings the difficulty in maintenance. Because of the high speed rotation of motor, the internal bearing is prone to burnout after long time use, needs to be disassembled and replaced to realize maintenance.

[0004] However, due to the structure design of interference fit, disassembling the bearing becomes extremely difficult, usually needs to rely on special tools or technical means, which not only increases the complexity of disassembly and replacement process, but also may cause damage to the shell and other parts during operation, thereby affecting the installation effect of the bearing and the subsequent use performance of the motor. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art described above, the utility model provides a high speed motor, the user can conveniently replace the first bearing by disassembling the first shaft sleeve, improves the maintainability of the motor, and the first labyrinth seal structure effectively seals the first bearing, prevents dust and other impurities from entering to cause damage, improves the service life of the bearing and the running stability of the motor, and the shell is integrally cast into shape, effectively enhances the overall stability of the motor.

[0006] The utility model discloses a high speed motor that can conveniently replace the first bearing by disassembling the first shaft sleeve, improves the maintainability of the motor, and the first labyrinth seal structure effectively seals the first bearing, prevents dust and other impurities from entering to cause damage, improves the service life of the bearing and the running stability of the motor, and the shell is integrally cast into shape, effectively enhances the overall stability of the motor.

[0007] A high speed motor, comprising:

[0008] A shell, which is internally provided with a stator, and the shell is integrally cast into shape;

[0009] A rotor, which is rotationally connected with the stator, and the rotor is fixedly connected with a rotating shaft;

[0010] A first shaft sleeve, which is detachably installed at the front end of the shell, and the first shaft sleeve is internally provided with a first bearing;

[0011] A front pressing cover, one side of which is in abutment with the first shaft sleeve, and the other side of which is provided with a first connecting slot;

[0012] A front end cover, which is sleeved on the front pressing cover, and the front pressing cover is provided with a second connecting slot, the second connecting slot and the first connecting slot are in abutment to form a labyrinth seal structure.

[0013] In a preferred embodiment, the front pressing cover is further provided with a first recess, when the front end cover is sleeved on the front pressing cover, the front end cover and the front pressing cover have a first gap, the first gap connects the first recess and the labyrinth seal structure to form a sealed oil groove.

[0014] In a preferred embodiment, the front pressing cover is provided with a through hole, and the first recess is formed in the through hole;

[0015] The front end cover is provided with a connecting sleeve, the connecting sleeve is in abutment in the through hole, and the outer side wall of the connecting sleeve and the inner side wall of the through hole have the first gap.

[0016] In a preferred embodiment, the front end inner cavity of the shell is provided with a limiting protrusion, the first shaft sleeve is in abutment in the inner cavity of the front end of the shell, and the limiting protrusion is in abutment with one side of the first shaft sleeve to limit the position.

[0017] In a preferred embodiment, one side of the front pressing cover is provided with a boss, the boss is in abutment with the other side of the first shaft sleeve, and the second gap is formed between the boss end face and the first bearing, and the first compression elastic member is installed in the second gap.

[0018] In a preferred embodiment, the rear end of the shell is provided with a second shaft sleeve, the rear end of the shell is provided with a second recess, the first clamping spring is in abutment in the second recess, the third gap is formed between one side of the second shaft sleeve and the first clamping spring, and the second compression elastic member is installed in the third gap.

[0019] In a preferred embodiment, a second bearing is further arranged in the second shaft sleeve, a fourth gap is formed between one side of the second bearing and the inner wall of the second shaft sleeve, and a third compression elastic member is installed in the fourth gap.

[0020] In a preferred embodiment, a third recess is formed in the second shaft sleeve, a second clamping spring is in abutment in the third recess and the other side of the second bearing, so that the second bearing is fixed in the second shaft sleeve.

[0021] In a preferred embodiment, a rear cover is further arranged at the rear end of the rotating shaft, and a third connecting slot is formed in the rear cover;

[0022] The other side of the second shaft sleeve is provided with a fourth connecting groove, and the rear cover is fastened to the rear end of the rotating shaft through screws, and the third connecting groove and the fourth connecting groove are mutually clamped.

[0023] In a preferred embodiment, the rear cover is provided with a fan blade, and a fan cover is fixed to the rear end of the casing and covers the outside of the rear cover.

[0024] In summary, the utility model has the following technical effects:

[0025] 1. The high-speed motor of the utility model, the user can conveniently replace the first bearing by disassembling the first shaft sleeve, improves the maintainability of the motor, and the labyrinth seal structure effectively seals the first bearing, prevents dust and other impurities from entering the first bearing to cause damage, improves the service life of the bearing and the running stability of the motor. In addition, the casing is integrally cast, which improves the strength and rigidity of the casing, effectively enhances the overall stability of the motor, ensures that the motor can withstand higher load and external impact during high-speed operation, and the integrally cast casing also reduces the joints and connection points, avoids problems such as seal oil leakage or vibration, improves the reliability, durability and heat dissipation performance of the motor, prolongs the service life, and provides a more reliable use experience for the user.

[0026] 2. The high-speed motor of the utility model, through the first compression elastic element, the second compression elastic element and the third compression elastic element, the first bearing, the second bearing and the second shaft sleeve can be effectively pre-tightened, the cooperation precision between the components is improved, the wear caused by looseness is reduced, and vibration and noise can be effectively suppressed, the stability and reliability of the motor operation are enhanced. At the same time, the pre-tightening of the elastic element can ensure that the motor maintains a low axial deviation during high-speed operation, thereby improving the service life of the bearing and the overall working efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic view of the high-speed motor of the utility model;

[0028] Figure 2 It is a sectional view of the high-speed motor of the utility model;

[0029] Figure 3 It is Figure 2 the enlarged schematic view of the A part;

[0030] Figure 4 It is Figure 2 the enlarged schematic view of the B part;

[0031] Figure 5 It is a structural schematic view of the front gland of the high-speed motor of the utility model from the second perspective;

[0032] Figure 6 Figure 2 is a structure diagram of the front cover of the high-speed motor according to the present application;

[0033] Figure 7 Figure 2 is a structure diagram of the front cover of the high-speed motor according to the present application;

[0034] Figure 8 Figure 2 is a structure diagram of the front cover of the high-speed motor according to the present application.

[0035] In the drawings, the following notations are used:

[0036] 1, casing; 11, stator; 12, limiting protrusion; 13, second groove; 131, first snap spring; 14, connector; 15, fastener; 16, fan cover; 2, rotor; 21, rotating shaft; 22, ring; 3, first bearing; 4, first shaft sleeve; 5, front cover; 51, first connecting groove; 52, first groove; 53, boss; 54, through hole; 55, first compression elastic member; 6, front end cover; 61, second connecting groove; 62, connecting sleeve; 63, labyrinth seal structure; 64, first gap; 7, second bearing; 71, third compression elastic member; 8, second shaft sleeve; 81, third groove; 811, second snap spring; 82, second compression elastic member; 9, rear cover; 91, fan blade. DETAILED DESCRIPTION

[0037] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0038] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0040] As Figures 1-8The high-speed motor shown comprises a shell 1, a rotor 2, a first shaft sleeve 4, a front gland 5 and a front end cover 6, the shell 1 is internally provided with a stator 11, and the shell 1 is integrally formed by casting; the rotor 2 is rotationally connected with the stator 11, and a rotating shaft 21 is fixedly connected on the rotor 2; the first shaft sleeve 4 is detachably installed at the front end of the shell 1, and a first bearing 3 is arranged in the first shaft sleeve 4; the front gland 5 is abutted with the first shaft sleeve 4 at one side, and a first connecting groove 51 is formed at the other side of the front gland 5; the front end cover 6 is sleeved on the front gland 5, and a second connecting groove 61 is formed on the front gland 5, and the second connecting groove 61 and the first connecting groove 51 are clamped to form a first labyrinth seal structure 63.

[0041] Therefore, the user can conveniently replace the first bearing 3 by detaching the first shaft sleeve 4, the maintenance of the motor is improved, the first labyrinth seal structure 63 effectively seals the first bearing 3, prevents dust and other impurities from entering the first bearing 3 to cause damage, improves the service life of the bearing and the running stability of the motor, and the shell 1 is integrally formed by casting, which effectively enhances the overall stability of the motor.

[0042] Referring to Figure 8 In the embodiment, copper rings 22 are arranged at both ends of the rotor 2 to improve the rotation efficiency of the rotor 2, the copper material has excellent electrical conductivity and thermal conductivity, which can effectively reduce the heat accumulation of the rotor 2 during high-speed operation, reduce the rotation resistance, and further improve the working efficiency of the rotor 2.

[0043] Referring to Figures 1-3 The front gland 5 is tightly fixed to the front end of the shell 1 by screws, and a first recess 52 is formed on the front gland 5, when the front end cover 6 is sleeved on the front gland 5, the front end cover 6 and the front gland 5 have a first gap 64, the first gap 64 communicates the first recess 52 and the labyrinth seal structure 63 to form a sealed oil groove; wherein the sealed oil groove is in the shape of "L", which improves the sealing effect of the first bearing 3.

[0044] Referring to Figure 3 , Figures 5-7 The front gland 5 is provided with a through hole 54, and the first recess 52 is formed in the through hole 54; the front end cover 6 is provided with a connecting sleeve 62, the connecting sleeve 62 is clamped in the through hole 54, and the first gap 64 is formed between the outer side wall of the connecting sleeve 62 and the inner side wall of the through hole 54.

[0045] Specifically, the front end cavity of the shell 1 is provided with a limiting protrusion 12, the first shaft sleeve 4 is connected to the inner cavity of the front end of the shell 1, and one side of the first shaft sleeve 4 is in abutment with the limiting protrusion 12 to achieve limiting; wherein one side of the front gland 5 is provided with a boss 53, the boss 53 is connected to the other side of the first shaft sleeve 4, and is tightly fixed to the front end of the shell 1 through the front gland 5, so as to ensure the stability of the first shaft sleeve 4 after installation; and the second gap between the end face of the boss 53 and the first bearing 3 is provided with a first compression elastic element 55, and the first bearing 3 is provided with a certain pre-tightening force through the elastic force of the first compression elastic element 55, so as to ensure that the first bearing 3 is axially pre-tightened in the first shaft sleeve 4, reduce the wear caused by loosening, and effectively suppress vibration and noise.

[0046] Referring to Figure 4 The rear end of the shell 1 is provided with a second shaft sleeve 8, the rear end of the shell 1 is provided with a second groove 13, the first snap spring 131 is connected in the second groove 13, the third gap between one side of the second shaft sleeve 8 and the first snap spring 131 is provided with a second compression elastic element 82, and the second shaft sleeve 8 is provided with a certain pre-tightening force through the elastic force of the second compression elastic element 82, so as to reduce the wear caused by loosening, and effectively suppress vibration and noise. Specifically, in the embodiment, the shell 1 is also provided with a fastener 15 to fasten the second shaft sleeve 8, so as to ensure the firmness of the second shaft sleeve 8 after installation.

[0047] Further, the high-speed motor of the utility model still includes second bearing 7 that sets up in second shaft sleeve 8, one side of second bearing 7 and second shaft sleeve 8 inner wall between gap, fourth gap in the installation of third compression elastic element 71.

[0048] More specifically, the second shaft sleeve 8 is provided with a third groove 81, the second snap spring 811 is connected in the third groove 81, and the other side of the second bearing 7 is in abutment with the second snap spring 811, so as to fix the second bearing 7 in the second shaft sleeve 8; wherein the other side of the second bearing 7 is limited and fixed through the abutment of the second snap spring 811, the third compression elastic element 71 exerts elastic force on one side of the second bearing, so as to fix the second bearing 7 in the second shaft sleeve 8, and when disassembling, the fastener 15 can be directly loosened, and the second shaft sleeve 8 can be disassembled, which reduces the need to use special tools to disassemble the second bearing 7, thereby improving the efficiency of disassembling the second bearing 7, and further improving the efficiency of maintaining the motor.

[0049] Further referring to Figure 2The utility model discloses a high -speed motor still includes rear cover 9, the third connecting groove is seted up on this rear cover 9, the fourth connecting groove is seted up on the other side of this second shaft sleeve 8, and the rear cover 9 is fastened in the rear end of rotating shaft 21 through screw, and third connecting groove and fourth connecting groove are mutually clamped, to carry out sealing to second bearing 7, prevent dust and other impurities from entering second bearing 7 and cause damage.

[0050] In the embodiment, the rear cover 9 is provided with a fan blade 91, and the rear end of the shell 1 is fixedly connected with a fan cover 16, which covers the outside of the rear cover 9. When the rotating shaft 21 rotates, the rear cover 9 is driven to rotate, and the fan blade 91 is driven to rotate and discharge air to the outside through the fan cover 16, thereby achieving heat dissipation of the motor and improving the reliability of the motor.

[0051] It should be noted that in the embodiment, the first compression elastic member 55, the second compression elastic member 82, and the third compression elastic member 71 are all disc springs, which can pre-tighten the first bearing 3, the second bearing 7, and the second shaft sleeve 8. The disc spring has good elastic performance and compact structure, can effectively provide uniform and stable pressure, ensures that each component always maintains appropriate contact pressure during operation, and avoids performance fluctuations caused by looseness or uneven pressure. In addition, the use of disc springs greatly improves the running stability of the equipment, reduces friction and wear, and prolongs the service life of the bearing and the shaft sleeve.

[0052] Specifically, in the embodiment, the shell 1 is also provided with a connector 14, which is an aviation plug. The aviation plug has high reliability and excellent durability, can ensure stable electrical connection, and avoid performance degradation or failure caused by poor contact or improper plugging. In addition, the aviation plug also effectively improves the protection level, can resist certain external environmental interference, such as moisture, dust, etc., thereby ensuring long-term stable operation of the equipment, which not only improves the safety and reliability of the high-speed motor, but also enhances the user's experience, avoids the common problems of traditional connectors, such as difficult plugging or poor contact.

[0053] In summary, the high-speed motor, the user can conveniently replace the first bearing 3 by disassembling the first shaft sleeve 4, improve the maintainability of the motor, and the labyrinth seal structure 63 effectively seals the first bearing 3, prevents dust and other impurities from entering the first bearing 3 and causing damage, and improves the service life of the bearing and the running stability of the motor. In addition, the casing 1 is integrally cast, which improves the strength and rigidity of the casing 1, effectively enhances the overall stability of the motor, ensures that the motor can withstand higher load and external impact during high-speed operation, and the integrally cast casing also reduces the joints and connection points, avoids problems such as seal oil leakage or vibration, improves the reliability, durability and heat dissipation performance of the motor, and prolongs the service life, providing users with a more reliable use experience.

[0054] The high-speed motor of the utility model, through first pressure tight elastic part 55, second pressure tight elastic part 82 and third pressure tight elastic part 71, can effectively pre-tighten first bearing 3, second bearing 7 and second shaft sleeve 8, improve the cooperation precision between parts, reduce the wear caused by looseness, and effectively suppress vibration and noise, and enhance the stability and reliability of motor operation. At the same time, the pre-tightening of the elastic element can ensure that the motor maintains a low axial deviation during high-speed operation, thereby improving the service life of the bearing and the overall working efficiency.

[0055] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0056] It should be understood that the terms "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0057] In addition, in the description of the utility model, the meaning of "a plurality of" and "several" is two or more than two, unless otherwise specifically limited.

[0058] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the utility model, some improvements and refinements can be made, which are also considered as the protection scope of the utility model.

Claims

1. A high speed electric machine characterized by, The utility model provides a kind of motor, including: Casing, which is internally provided with a stator, is integrally cast into shape; A rotor is rotatably connected to the stator, and a rotating shaft is fixedly connected to the rotor; A first shaft sleeve is detachably mounted to the front end of the casing, and a first bearing is provided in the first shaft sleeve; A front gland is abutted on one side of the first shaft sleeve, and a first connecting groove is formed on the other side of the front gland; A front end cover is sleeved on the front gland, and a second connecting groove is formed on the front gland, and the second connecting groove and the first connecting groove are mutually clamped to form a labyrinth seal structure.

2. The high speed electric machine of claim 1, wherein, A first recess is also formed on the front gland, and when the front end cover is sleeved on the front gland, a first gap is formed between the front end cover and the front gland, and the first gap connects the first recess and the labyrinth seal structure to form a sealed oil groove.

3. The high speed electric machine of claim 2, wherein, A through hole is formed on the front gland, and the first recess is formed in the through hole; A connecting sleeve is formed on the front end cover, the connecting sleeve is clamped in the through hole, and the first gap is formed between the outer side wall of the connecting sleeve and the inner side wall of the through hole.

4. A high speed electric machine according to any one of claims 1-3, characterized in that, A limiting protrusion is formed in the front end cavity of the casing, the first shaft sleeve is clamped in the front end cavity of the casing, and one side of the first shaft sleeve is abutted on the limiting protrusion to limit the position.

5. The high speed electric machine of claim 4, wherein, A boss is formed on one side of the front gland, the boss is clamped on the other side of the first shaft sleeve, and a second gap is formed between the end face of the boss and the first bearing, and a first compression elastic member is mounted in the second gap.

6. The high speed electric machine of any one of claims 1-3, wherein, A second shaft sleeve is formed on the rear end of the casing, a second recess is formed on the rear end of the casing, a first clamping spring is clamped in the second recess, a third gap is formed between one side of the second shaft sleeve and the first clamping spring, and a second compression elastic member is mounted in the third gap.

7. A high speed electric machine as claimed in claim 6, characterised in that, A second bearing is also provided in the second shaft sleeve, a fourth gap is formed between one side of the second bearing and the inner wall of the second shaft sleeve, and a third compression elastic member is mounted in the fourth gap.

8. The high speed electric machine of claim 7, wherein, A third recess is formed in the second shaft sleeve, a second clamping spring is clamped in the third recess, and the other side of the second bearing is abutted on the second clamping spring to fix the second bearing in the second shaft sleeve.

9. The high speed electric machine of claim 8, wherein, A rear cover is fixedly connected to the rear end of the rotating shaft, a third connecting groove is formed on the rear cover; A fourth connecting groove is formed on the other side of the second shaft sleeve, the rear cover is fastened to the rear end of the rotating shaft by screws, and the third connecting groove and the fourth connecting groove are mutually clamped.

10. The high speed electric machine of claim 9, wherein, A fan blade is formed on the rear cover, a fan cover is fixedly connected to the rear end of the casing, and the fan cover covers the outside of the rear cover.

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