Polishing motor

Abstract

The utility model provides a polishing motor, and relates to the technical field of engineering machinery, the polishing motor comprises a housing and a rotor, the rotor passes through the housing; the rear end cover is connected with one end of the shell, one end of the rotor penetrates through the rear end cover, and an oil seal is arranged between the rear end cover and the rotor; the front end cover is connected with the other end of the shell, the other end of the rotor penetrates through the front end cover, and an oil seal is arranged between the front end cover and the rotor; the polishing head assembly is connected with the other end of the rotor; the oil seals are arranged in front of and behind the rotor, the sealing performance of the polishing motor is improved, the service life of the polishing motor is prolonged, and the construction requirement can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and more specifically, relates to a grinding motor. Background Art

[0002] During the construction of rail engineering machinery, the track surface often needs to be polished to ensure the smoothness and safety of the track. Traditional polishing motors are not well sealed, and the inside of the polishing motor is not easy to resist the invasion of external pollutants. The inside of the polishing motor is also easily invaded by moisture, which reduces the service life of the polishing motor and often cannot meet construction needs. Utility Model Content

[0003] The purpose of the utility model is to provide a grinding motor in response to the deficiencies in the existing technology, so as to solve the problems mentioned in the above background technology that the traditional grinding motor has insufficient sealing, the performance of the grinding motor cannot be guaranteed, the service life of the grinding motor is reduced, and it often cannot meet construction needs.

[0004] In order to achieve the above object, the utility model provides a grinding motor, which comprises:

[0005] A housing and a rotor, wherein the rotor passes through the housing;

[0006] A rear end cover, wherein the rear end cover is connected to one end of the housing, one end of the rotor passes through the rear end cover, and an oil seal is provided between the rear end cover and the rotor;

[0007] A front end cover, the front end cover is connected to the other end of the housing, the other end of the rotor passes through the front end cover, and an oil seal is provided between the front end cover and the rotor;

[0008] A grinding head assembly is connected to the other end of the rotor.

[0009] Preferably, the grinding motor further comprises:

[0010] A wind hood is connected to the rear end cover.

[0011] A fan blade is connected to one end of the rotor and is arranged in the wind cover.

[0012] Preferably, the grinding motor further comprises:

[0013] A rear cover, the rear cover is connected to the rear end cover, one end of the rotor passes through the rear cover, and an annular rear bearing chamber is provided between the rear cover and the rear end cover;

[0014] A rear bearing is arranged in the rear bearing chamber, and the rear bearing is sleeved on the rotor.

[0015] Preferably, the grinding motor further comprises a wave spring washer, wherein the wave spring washer is arranged between the rear bearing and the rear end cover, and the wave spring washer is sleeved on the rotor.

[0016] Preferably, the rear bearing is a deep groove ball bearing.

[0017] Preferably, the grinding motor further comprises:

[0018] At least two front bearings, an annular front bearing chamber is provided on the inner side of the front end cover, the front bearing chamber extends to a side of the front end cover away from the rear end cover, and at least two front bearings are sequentially arranged in the front bearing chamber;

[0019] A front gland, the front gland is connected to a side of the front end cover away from the rear end cover, and the front gland is pressed against the front bearing;

[0020] The front bearing and the front pressure cover are sleeved on the rotor.

[0021] Preferably, the grinding motor also includes a front cover, which is arranged on a side of the front pressure cover away from the rear end cover, and the front cover is connected to the front end cover. An annular oil seal installation chamber is provided between the front cover and the front end cover, and the oil seal is arranged in the oil seal installation chamber, and the front bearing and the front pressure cover are sleeved on the rotor.

[0022] Preferably, the grinding motor further comprises:

[0023] A spacer ring, the spacer ring is sleeved on the rotor, the spacer ring is arranged on the inner side of the oil seal, and one end of the spacer ring is pressed against the front bearing;

[0024] A sealing cover, wherein a side of the front sealing cover away from the rear end cover is provided with an annular sealing groove, the sealing cover rotates with the rotor and is connected in the sealing groove, and the sealing cover is pressed against the spacer ring;

[0025] A nut is threadedly connected to the rotor and is crimped to the sealing cover.

[0026] Preferably, the front bearing is an angular contact bearing.

[0027] Preferably, the grinding motor further comprises:

[0028] A force transmission key, the force transmission key being arranged between the grinding head assembly and the rotor;

[0029] Bolt and anti-loosening washer, the other end of the rotor passes through the grinding head assembly, the other end of the rotor is provided with a threaded hole, the anti-loosening washer is sleeved on the bolt, the bolt is threadedly connected to the threaded hole, and the anti-loosening washer is crimped on the grinding head assembly.

[0030] The utility model provides a grinding motor, which has the beneficial effects of: an oil seal is provided between the rear end cover and the rotor of the grinding motor, and an oil seal is provided between the front end cover and the rotor, so that oil seals are provided before and after the rotor, thereby increasing the sealing performance of the grinding motor, improving the service life of the grinding motor, and being able to meet construction requirements.

[0031] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0033] Figure 1 A schematic cross-sectional structure diagram of a grinding motor according to an embodiment of the utility model is shown.

[0034] Description of reference numerals:

[0035] 1. Wind hood; 3. Rotor; 4. Rear end cover; 5. Rear bearing; 6. Rear cover; 7. Housing; 8. Front end cover; 9. Front bearing; 10. Front pressure cover; 11. Front cover; 12. Grinding head assembly; 13. Nut; 14. Sealing cover; 15. Oil seal; 16. Spacer ring; 17. Wave spring washer; DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0037] like Figure 1 As shown, the utility model provides a grinding motor, which includes:

[0038] A housing 7 and a rotor 3, wherein the rotor 3 penetrates through the housing 7;

[0039] A rear end cover 4, the rear end cover 4 is connected to one end of the housing 7, one end of the rotor 3 passes through the rear end cover 4, and an oil seal 15 is provided between the rear end cover 4 and the rotor 3;

[0040] A front end cover 8 is connected to the other end of the housing 7, and the other end of the rotor 3 passes through the front end cover 8. An oil seal is provided between the front end cover 8 and the rotor 3;

[0041] The grinding head assembly 12 is connected to the other end of the rotor 3 .

[0042] Specifically, in order to solve the problem that the traditional grinding motor has insufficient sealing, the performance of the grinding motor cannot be guaranteed, the service life of the grinding motor is reduced, and it often cannot meet the construction needs, the utility model provides a grinding motor, which is provided with an oil seal 15 between the rear end cover 4 and the rotor 3, and an oil seal 15 between the front end cover 8 and the rotor 3, so that the oil seal 15 is provided in front and behind the rotor 3, thereby increasing the sealing performance of the grinding motor, improving the service life of the grinding motor, and being able to meet the construction needs.

[0043] Preferably, both the rear end cover 4 and the front end cover 8 are provided with annular concave stoppers, and both ends of the shell are provided with annular convex stoppers, and the concave stoppers are butt-connected with the convex stoppers.

[0044] Specifically, ensure that the rear end cover 4 and the front end cover 8 are concentric with the housing 7 after assembly.

[0045] Preferably, the grinding motor further includes a stator, which is disposed in the housing 7, and the rotor passes through the stator.

[0046] Preferably, the grinding motor further comprises:

[0047] The wind cover 1 is connected with the rear end cover 4.

[0048] The fan blade 2 is connected to one end of the rotor 3 and the fan blade 2 is arranged in the wind cover 1.

[0049] Specifically, the wind cover 1 is connected to the rear end cover 4 by bolts, and the fan blades 2 are used to dissipate heat for the entire grinding motor to prevent the grinding motor from overheating and becoming unusable, thereby improving the construction efficiency of the grinding motor.

[0050] Preferably, the grinding motor further comprises:

[0051] A rear cover 6, which is connected to the rear end cover 4, one end of the rotor 3 passes through the rear cover 6, and an annular rear bearing chamber is provided between the rear cover 6 and the rear end cover 4;

[0052] The rear bearing 5 is arranged in the rear bearing chamber, and the rear bearing 5 is sleeved on the rotor 3.

[0053] Specifically, the rear cover 6 and the rear end cover 4 are an integrated structure to form a rear bearing chamber.

[0054] Preferably, the grinding motor further includes a wave spring washer 17 , which is disposed between the rear bearing 5 and the rear end cover 4 , and is sleeved on the rotor 3 .

[0055] Preferably, the rear bearing 5 is a deep groove ball bearing.

[0056] Preferably, the grinding motor further comprises:

[0057] At least two front bearings 9, an annular front bearing chamber is provided on the inner side of the front end cover 8, the front bearing chamber extends to the side of the front end cover 8 away from the rear end cover 4, and at least two front bearings 9 are sequentially arranged in the front bearing chamber;

[0058] A front gland 10, the front gland 10 is connected to a side of the front end cover 8 away from the rear end cover 4, and the front gland 10 is pressed against the front bearing 9;

[0059] The front bearing 9 and the front pressure cover 10 are sleeved on the rotor 3 .

[0060] Specifically, the front pressure cover 10 is threadedly connected to the inner side of the side of the front end cover 8 away from the rear end cover 4. The front pressure cover 10 is provided with a top screw hole for positioning the front pressure cover 10 after threaded connection; the front bearing 9 is an angular contact bearing. When the force is large, two face-to-face angular contact bearings are selected to improve the force performance of the grinding motor.

[0061] Preferably, the grinding motor also includes a front cover 11, which is arranged on the side of the front pressure cover 10 away from the rear end cover 4, and the front cover 11 is connected to the front end cover 8. An annular oil seal installation chamber is provided between the front cover 11 and the front end cover 8, and the oil seal 15 is arranged in the oil seal installation chamber. The front bearing 9 and the front pressure cover 10 are sleeved on the rotor 3.

[0062] Specifically, the front pressure cover 10 and the front cover 11 are not in direct contact with each other, the front cover 11 is connected to the front end cover 8 by bolts, and the oil seal installation chamber is used to assemble the oil seal 15 to ensure good sealing.

[0063] Preferably, the grinding motor further comprises:

[0064] A spacer ring 16 is sleeved on the rotor 3 and arranged on the inner side of the oil seal 15. One end of the spacer ring 16 is pressed against the front bearing 9.

[0065] Sealing cover 14: A side of the front cover 11 away from the rear cover 4 is provided with an annular sealing groove, the sealing cover 15 rotates with the rotor 3 and is connected in the sealing groove, and the sealing cover 14 is crimped with the spacer ring 16;

[0066] The nut 13 is threadedly connected to the rotor 3 , and the nut 13 is crimped to the sealing cover 14 .

[0067] Specifically, the nut 13 is an anti-loosening nut. By tightening the anti-loosening nut, the nut 13 will press the sealing cover 14 and the spacer ring 16 in turn, and finally press the front bearing 9; at the front end cover where the working environment is harsh, a dynamic seal composed of the sealing cover 14 and the sealing groove is added, which is combined with the oil seal 15 to enhance the sealing performance.

[0068] Preferably, the grinding motor further comprises:

[0069] A force transmission key, which is arranged between the grinding head assembly 12 and the rotor 3;

[0070] Bolt and anti-loosening washer, the other end of the rotor 3 passes through the grinding head assembly 12, the other end of the rotor 3 is provided with a threaded hole, the anti-loosening washer is sleeved on the bolt, the bolt is threadedly connected to the threaded hole, and the anti-loosening washer is crimped on the grinding head assembly 12.

[0071] Specifically, the rotor 3 is connected to the grinding head assembly 12 by interference fit, and a force transmission key is provided, which can transmit a large torque while ensuring concentricity; the anti-loosening washer can well improve the anti-slip performance of the grinding head assembly 12.

[0072] Preferably, oil passages are provided in both the rear end cover 4 and the front end cover 8 . The oil passage of the rear end cover 4 is communicated with the rear bearing chamber, and the oil passage of the front end cover 8 is communicated with the front bearing chamber.

[0073] Specifically, the rear end cover 4 and the front end cover 8 are both provided with oil passages, and lubricating grease can be added to the front bearing 9 and the rear bearing 5 through the oil passages without disassembly.

[0074] Preferably, a lifting hole is provided directly above the housing 7 .

[0075] Specific and convenient for lifting.

[0076] Preferably, the housing 7 is provided with fan-shaped air slots.

[0077] Specifically, the heat dissipation performance of the motor is improved.

[0078] In summary, during the design process of the grinding motor of the utility model, the grinding motor is provided with oil seals 15 at the rear end cover 4 and the front end cover 8. Through a strict sealing system, the good sealing of the grinding motor is ensured; the grinding motor is connected to fan blades at one end of the rotor 3 to achieve effective heat dissipation of the grinding motor; the grinding motor uses two face-to-face angular contact bearings at the front end cover 8, which can withstand axial force well and improve the force performance of the grinding motor; the overall design of the grinding motor increases the service life of the grinding motor, can meet construction requirements, and is of great significance to improving the construction efficiency and quality of rail engineering machinery.

[0079] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A grinding motor, characterized in that: The grinding motor includes: A housing and a rotor, wherein the rotor passes through the housing; A rear end cover, wherein the rear end cover is connected to one end of the housing, one end of the rotor passes through the rear end cover, and an oil seal is provided between the rear end cover and the rotor; A front end cover, wherein the front end cover is connected to the other end of the housing, the other end of the rotor passes through the front end cover, and an oil seal is provided between the front end cover and the rotor; A grinding head assembly is connected to the other end of the rotor.

2. A grinding motor according to claim 1, characterized in that: The grinding motor also includes: A wind shield connected to the rear end cover; A fan blade is connected to one end of the rotor and is arranged in the wind cover.

3. A grinding motor according to claim 1, characterized in that: The grinding motor also includes: A rear cover, the rear cover is connected to the rear end cover, one end of the rotor passes through the rear cover, and an annular rear bearing chamber is provided between the rear cover and the rear end cover; A rear bearing is arranged in the rear bearing chamber and is sleeved on the rotor.

4. A grinding motor according to claim 3, characterized in that: The grinding motor further comprises a wave spring washer, wherein the wave spring washer is arranged between the rear bearing and the rear end cover, and the wave spring washer is sleeved on the rotor.

5. A grinding motor according to claim 3, characterized in that: The rear bearing is a deep groove ball bearing.

6. A grinding motor according to claim 1, characterized in that: The grinding motor also includes: At least two front bearings, an annular front bearing chamber is provided on the inner side of the front end cover, the front bearing chamber extends to a side of the front end cover away from the rear end cover, and at least two front bearings are sequentially arranged in the front bearing chamber; A front gland, the front gland is connected to a side of the front end cover away from the rear end cover, and the front gland is pressed against the front bearing; The front bearing and the front pressure cover are sleeved on the rotor.

7. A grinding motor according to claim 6, characterized in that: The grinding motor also includes a front cover, which is arranged on a side of the front pressure cover away from the rear end cover, the front cover is connected to the front end cover, an annular oil seal installation chamber is provided between the front cover and the front end cover, the oil seal is arranged in the oil seal installation chamber, and the front bearing and the front pressure cover are sleeved on the rotor.

8. A grinding motor according to claim 7, characterized in that: The grinding motor also includes: A spacer ring, the spacer ring is sleeved on the rotor, the spacer ring is arranged on the inner side of the oil seal, and one end of the spacer ring is pressed against the front bearing; A sealing cover, wherein a side of the front sealing cover away from the rear end cover is provided with an annular sealing groove, the sealing cover rotates with the rotor and is connected in the sealing groove, and the sealing cover is pressed against the spacer ring; A nut is threadedly connected to the rotor and is crimped to the sealing cover.

9. A grinding motor according to claim 6, characterized in that: The front bearing is an angular contact bearing.

10. A grinding motor according to claim 1, characterized in that: The grinding motor also includes: A force transmission key, the force transmission key being arranged between the grinding head assembly and the rotor; Bolt and anti-loosening washer, the other end of the rotor passes through the grinding head assembly, the other end of the rotor is provided with a threaded hole, the anti-loosening washer is sleeved on the bolt, the bolt is threadedly connected to the threaded hole, and the anti-loosening washer is crimped on the grinding head assembly.

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