Bearing fixing structure for brake motor

Abstract

The utility model discloses a bearing fixing structure for a brake motor. The bearing fixing structure comprises a casing stator assembly and a rotor assembly, a first bearing, a locking nut, a second bearing, an end cover and a magnetic steel assembly are sequentially sleeved on the rotor assembly from one end to the other end; the casing stator assembly comprises a casing and an internal wiring board supporting stator assembly, the wiring board supporting stator assembly sleeves the middle part of the rotor assembly and penetrates through the end cover, and the casing sleeves the outer side of the rotor assembly and abuts against the first bearing and the end cover; a locking internal thread is further arranged on the inner wall of the machine shell, the locking nut is provided with an external thread, and the machine shell is matched with the locking nut through the locking internal thread to be fastened. According to the utility model, the double-bearing design is adopted, the structure is compact, and the stability and rotation precision are higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, in particular to a bearing fixing structure for brake motor. BACKGROUND

[0002] With the rapid development of industrial technology, the requirement of motor performance is increasing. The traditional motor design is difficult to meet the needs of modern industry in high precision, high reliability, fast response and compact structure etc. As a kind of technology using magnetic field change to realize motor operation, reluctance technology has the advantages of simple structure, high efficiency and low cost. However, the motor on the market has some shortcomings in performance, reliability, response speed and structural compactness etc., especially the traditional single-bearing design, the mechanical vibration of motor is more obvious, and the support stability and rotation accuracy are insufficient. As for part of the double-bearing design, the structural compactness and synchronism are insufficient, and the axial movement of bearing is common, so the stability of rotor is insufficient, and the motor cannot maintain stable performance when running at high speed or load changes, so the applicable range is limited. SUMMARY

[0003] The utility model wants to solve the technical problem, overcome the insufficient of prior art, provide a bearing fixing structure for brake motor, it adopts double-bearing design, compact structure, higher stability and rotation accuracy.

[0004] In order to solve the above technical problem, the technical scheme of the utility model is:

[0005] A bearing fixing structure for brake motor, it includes the shell stator assembly and rotor assembly;

[0006] The rotor assembly is sequentially sleeved with first bearing, locking nut, second bearing, end cover and magnetic steel assembly along one end to the other end;

[0007] The shell stator assembly includes shell and internal wiring board support stator assembly, the wiring board support stator assembly is sleeved in the middle of rotor assembly and passes through end cover, the shell is sleeved on the outside of rotor assembly and is in abutment with first bearing and end cover;

[0008] The inner wall of the shell is further provided with locking internal thread, the locking nut has external thread, and the shell is fastened by the cooperation of locking internal thread and locking nut.

[0009] Further, the rotor assembly includes rotor shaft and rotor sheath sleeved on the rotor shaft, and the rotor sheath is located between the locking nut and the second bearing.

[0010] Further, the rotor shaft is provided with a first limiting portion suitable for sleeving the first bearing, a second limiting portion suitable for sleeving the second bearing and a third limiting portion suitable for sleeving the locking nut.

[0011] Further, the inner wall of the shell is provided with a first limiting step suitable for abutting against the first bearing and a second limiting step suitable for abutting against the end cover.

[0012] Further, the central portion of the end cover is further provided with a limiting groove suitable for limiting the end portion of the second bearing, and the second bearing is embedded in the limiting groove.

[0013] Further, the limiting groove is further provided with a wave-shaped elastic pad.

[0014] Further, the magnetic steel assembly comprises a magnetic steel bracket sleeved on the end portion of the rotor assembly and a magnetic steel mounted on the magnetic steel bracket.

[0015] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0016] 1. The utility model adopts a double-bearing supporting structure, compared with the traditional single-bearing design, significantly improves the supporting stability and rotation precision of the motor, reduces mechanical vibration and noise, and prolongs the working life of the motor.

[0017] 2. The utility model has compact structure, realizes reliable connection between the bearing and the shell through the locking nut fastening mechanism, effectively reduces the axial movement of the bearing, improves the stability of the rotor, ensures that the motor can still maintain stable performance when running at high speed or the load changes, and has a wider application range.

[0018] 3. The utility model realizes the conversion of electric energy and mechanical energy by using the magnetic resistance effect, has higher energy conversion and better speed regulation performance compared with the traditional inductive motor, has simple structure, convenient maintenance and high reliability, can integrate a brake mechanism to meet the demand of rapid braking and positioning of the motor, and improves the application flexibility of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an external structure schematic view of the utility model;

[0020] Figure 2 It is an internal structure schematic view of the utility model;

[0021] Figure 3 It is a structure schematic view of the shell of the utility model;

[0022] Figure 4 It is a local assembly schematic view of the utility model;

[0023] Figure 5 It is a structure schematic view of the rotor assembly of the utility model;

[0024] Figure 6 The structure exploded view of the utility model is shown in the figure;

[0025] Figure 7 The cross-sectional structure view of the utility model is shown in the figure;

[0026] Among them, 1. The machine shell stator assembly;11. The machine shell;110. The locking internal thread;111. The first limiting step;112. The second limiting step;12. The wiring board support stator assembly;2. The rotor assembly;21. The rotor shaft;211. The first limiting part;212. The second limiting part;213. The third limiting part;22. The rotor sheath;3. The first bearing;4. The locking nut;5. The second bearing;6. The wave-shaped elastic pad;7. The end cover;70. The limiting groove;8. The magnetic steel assembly;80. The magnetic steel;81. The magnetic steel bracket. DETAILED DESCRIPTION

[0027] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining the drawings, the utility model is further detailed.

[0028] As Figures 1-7 Indicated in the embodiment, provide a kind of bearing fixing structure for brake motor, it is mainly composed of machine shell stator assembly 1, rotor assembly 2, first bearing 3, locking nut 4, second bearing 5, end cover 7 and magnetic steel assembly 8 etc. component composition. Wherein rotor assembly 2 includes rotor shaft 21 and the rotor sheath 22 of being set on rotor shaft 21, first bearing 3, locking nut 4, second bearing 5, end cover 7 and magnetic steel assembly 8 are sequentially set on rotor shaft 21 along one end to the other end, and rotor sheath 22 is located between locking nut 4 and second bearing 5. Machine shell stator assembly 1 includes machine shell 11 and internal wiring board support stator assembly 12, wiring board support stator assembly 12 is installed in the middle of rotor shaft 21, and the lead of wiring board support stator assembly 12 passes through end cover 7 and extends, and machine shell 11 is installed on the outer side of rotor assembly 2 and is in abutment with first bearing 3, end cover 7. Magnetic steel assembly 8 specifically includes the magnetic steel bracket 81 of being set on the end of rotor assembly 2 and the magnetic steel 80 of being installed on magnetic steel bracket 81.

[0029] In order to realize the fastening effect of whole, locking internal thread 110 is further provided on the inner wall of machine shell 11, locking nut 4 has outer thread, and machine shell 11 is fastened by cooperating with locking nut 4 through locking internal thread 110, to realize the compression locking of internal overall structure. Such overall structure is compact, can effectively reduce the axial movement of bearing, improve the stability of rotor, ensure that motor can still maintain stable performance when high-speed operation or load changes.

[0030] Specifically, refer to Figure 5As shown, the rotor shaft 21 is provided with a first limiting portion 211 suitable for sleeving the first bearing 3, a second limiting portion 212 suitable for sleeving the second bearing 5, and a third limiting portion 213 suitable for sleeving the locking nut 4, the first limiting portion 211, the second limiting portion 212, and the third limiting portion 213 are specifically grooves with diameters smaller than the rotor shaft 21 itself, which can limit and stabilize the first bearing 3, the second bearing 5, and the locking nut 4 when locked, thereby ensuring the overall connection stability.

[0031] Meanwhile, referring to Figure 3 、 7 As shown, the inner wall of the shell 11 of the embodiment is also provided with a first limiting step 111 suitable for abutting against the first bearing 3 and a second limiting step 112 suitable for abutting against the end cover 7, so that when the locking nut 4 is locked, the overall relative force can be formed to achieve a stable limiting effect.

[0032] In addition, referring to Figure 4 、 6 To ensure the stability of the second bearing 5, the embodiment is also provided with a limiting groove 70 in the center of the end cover 7, which is suitable for limiting the end of the second bearing 5, and the second bearing 5 is embedded in the limiting groove 70. At the same time, a wave-shaped elastic pad 6 is also arranged in the limiting groove 70 to protect the second bearing 5 and achieve a buffering effect.

[0033] Through the above design, the embodiment adopts a double-bearing support structure, which significantly improves the support stability and rotation accuracy of the motor compared with the traditional single-bearing design, reduces mechanical vibration and noise, and prolongs the service life of the motor. At the same time, the structure of the embodiment is compact, and the reliable connection between the bearing and the shell is realized through the locking nut fastening mechanism, which effectively reduces the axial movement of the bearing and improves the stability of the rotor, ensuring that the motor can still maintain stable performance when running at high speed or under load changes, and the application range is wider.

[0034] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above specific embodiments, technical problems solved by the utility model, technical solutions and beneficial effects are further described in detail, and it should be understood that the above only for the specific embodiments of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A bearing fixing structure for a brake motor, characterized by: It comprises a casing stator assembly (1) and a rotor assembly (2); The rotor assembly (2) is sequentially sleeved with a first bearing (3), a locking nut (4), a second bearing (5), an end cover (7) and a magnetic steel assembly (8) from one end to the other end. The casing stator assembly (1) comprises a casing (11) and an internal wiring board support stator assembly (12) sleeved in the middle of the rotor assembly (2) and passing through the end cover (7), and the casing (11) is sleeved outside the rotor assembly (2) and abuts against the first bearing (3) and the end cover (7). The casing (11) is further provided with a locking internal thread (110) on the inner wall, the locking nut (4) has an external thread, and the casing (11) is fastened by cooperating with the locking nut (4) through the locking internal thread (110).

2. The bearing fixing structure for a brake motor according to claim 1, characterized by: The rotor assembly (2) comprises a rotor shaft (21) and a rotor sheath (22) sleeved on the rotor shaft (21), and the rotor sheath (22) is located between the locking nut (4) and the second bearing (5).

3. The bearing fixing structure for a brake motor according to claim 2, characterized by: The rotor shaft (21) is provided with a first limiting portion (211) suitable for sleeving the first bearing (3), a second limiting portion (212) suitable for sleeving the second bearing (5) and a third limiting portion (213) suitable for sleeving the locking nut (4).

4. The bearing fixing structure for a brake motor according to claim 1, characterized by: The inner wall of the casing (11) is provided with a first limiting step (111) suitable for abutting against the first bearing (3) and a second limiting step (112) suitable for abutting against the end cover (7).

5. The bearing fixing structure for a brake motor according to claim 1, characterized by: The end cover (7) is further provided with a limiting groove (70) in the center suitable for limiting the end portion of the second bearing (5), and the second bearing (5) is embedded in the limiting groove (70).

6. The bearing fixing structure for a brake motor according to claim 5, characterized by: The limiting groove (70) is further provided with a wave-shaped elastic pad (6).

7. The bearing fixing structure for a brake motor according to claim 1, characterized by: The magnetic steel assembly (8) comprises a magnetic steel bracket (81) sleeved on the end portion of the rotor assembly (2) and a magnetic steel (80) installed on the magnetic steel bracket (81).

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