Motor and multi-drive coupling system

Abstract

The utility model relates to the technical field of motors, and discloses a motor and a multi-drive coupling system. The speed reduction unit comprises a shell, a bearing assembly, a clutch assembly and a planetary reducer arranged in the shell. The output end of the planetary reducer is in transmission connection with the driving unit; the clutch assembly comprises a mounting seat, a driving part and a driven part; the mounting seat is detachably connected with the shell; the driving part is arranged in the mounting seat through a bearing assembly; the inner side and the outer side of the driving part are well supported, so that the rotation process of the driving part is more stable and reliable, the vibration condition generated when the driving part works can be reduced, and further the vibration generated by the whole motor is reduced; and the problem that the whole device cannot work when a single motor in the multi-drive coupling system breaks down can be avoided, the working stability of the motor is improved, and meanwhile, the working flexibility of the motor is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor and a multi-drive coupling system. Background Art

[0002] In order to solve the problems of high working energy consumption and difficult frequency conversion transformation of high-power motors, usually multiple motors with smaller power are coupled and output to form a multi-drive coupling system to replace the direct-drive motor, thereby ensuring the drive efficiency while reducing the manufacturing and production difficulty of the motor. The multi-drive coupling system not only has good drive reliability but also is simpler and more flexible when modification is required.

[0003] Currently, the existing multi-drive coupling system usually consists of a coupling transmission box and multiple motors. The multiple motors are simultaneously installed on the coupling transmission box and are in transmission cooperation with the transmission components in the coupling transmission box. However, due to the poor transmission stability of the motors, vibration is likely to occur when a single motor is in transmission cooperation with the coupling transmission box. The multiple motors on the coupling transmission box continuously vibrate during long-term operation, resulting in easy occurrence of malfunction of the device. Summary of the Utility Model

[0004] In view of this, the utility model provides a motor and a multi-drive coupling system to solve the problem of poor working stability of the existing multi-drive coupling system.

[0005] In a first aspect, the utility model provides a motor for connecting to the main shaft of a multi-drive coupling system. The motor includes: a driving unit; a reduction unit, including a housing, a bearing assembly, a clutch assembly, and a planetary speed reducer installed in the housing; the output end of the planetary speed reducer is in transmission connection with the driving unit; the clutch assembly includes a mounting seat, a driving part, and a driven part; the mounting seat is detachably connected to the housing; the driving part is installed inside the mounting seat through the bearing assembly, is in transmission cooperation with the output end and is adapted to drive the driven part to rotate in a first direction; the driven part is installed inside the driving part through the bearing assembly, is used for connecting to the main shaft and is adapted to drive the main shaft to rotate in the first direction, or is driven by the main shaft to rotate in the first direction and disengages from the driving part.

[0006] Beneficial effects: Bearing assemblies are provided on the inner and outer sides of the driving part. Since there is good support on both the inner and outer sides of the driving part, when the driving part rotates driven by the output end and is in transmission cooperation with the driven part, the rotation process of the driving part is more stable and reliable, which can effectively reduce the vibration generated during its operation, and further reduce the vibration generated by the overall motor. In addition, a clutch assembly is provided at the output end of the planetary reducer. When the driving unit or the planetary reducer fails and cannot drive the driving part to rotate, at this time, the driven part can rotate independently driven by an external component, which can effectively avoid the problem that the entire device cannot work when a single motor fails in a multi-drive coupling system. This not only improves the working stability of the motor, but also improves the working flexibility of the motor, and effectively solves the problem of poor working stability of the existing multi-drive coupling system.

[0007] In an alternative embodiment, the reduction unit further includes a one-way transmission member; the driving part drives the driven part to rotate in a first direction through the one-way transmission member.

[0008] Beneficial effects: The one-way transmission member has a simple and compact structure, occupies a small space and has a low failure rate.

[0009] In an alternative embodiment, the driving part and the output end are in spline transmission through their own splines.

[0010] Beneficial effects: This form of transmission cooperation is simple and reliable and does not require additional components to fix the transmission components. When it is necessary to repair and maintain the driving unit and the planetary reducer, the connection components outside the device can be removed and the components can be directly taken off.

[0011] In an alternative embodiment, the clutch assembly further includes a limiting component disposed between the mounting seat and the driving part. A shoulder is formed outward on the outer wall of the driving part near the planetary reducer, and a shoulder is formed inward on the inner wall of the mounting seat near the planetary reducer. One side of the bearing assembly abuts and cooperates with the shoulder and the other side abuts and cooperates with the limiting component.

[0012] Beneficial effects: The positioning method of the bearing assembly is simple and reliable. In this form, the mounting seat and the driving part can position one side of the bearing assembly through their own structures, which can effectively reduce the number of positioning components required and simplify the assembly steps.

[0013] In an alternative embodiment, the bearing assembly between the driving part and the mounting seat is a first bearing assembly. The first bearing assembly includes a first bearing and a second bearing arranged along the axial direction of the driving part. The first bearing and the second bearing are spaced apart by a sleeve sleeved on the outer wall of the driving part.

[0014] Beneficial effects: The first bearing assembly in this form has better support uniformity, can support multiple positions on the outer wall of the active part simultaneously, can further improve the support reliability and stability, and reduce the vibration risk during the rotation of the active part.

[0015] In an alternative embodiment, the active part includes an active shaft and an active ring. The end face of the active shaft away from the output end has a mating groove that is recessed inward. The active ring is located in the mating groove, and the active shaft and the active ring are connected by a fastening member.

[0016] Beneficial effects: The connection form between the active shaft and the active ring is simple and reliable. The manufacturing difficulty of this split-type active part is lower, which is convenient for production and assembly.

[0017] In an alternative embodiment, a mating hole for cooperating with the fastening member is provided on the end face of the active ring. A through hole for the fastening member to pass through is provided on the active shaft corresponding to the mating hole. A sealing member is provided between the fastening member and the active shaft to seal the through hole.

[0018] Beneficial effects: The arrangement positions of the mating hole and the through hole have little influence on the structural strength of the components. The sealing member can effectively improve the sealing performance at the through hole and prevent leakage of lubricating oil, etc. from the through hole.

[0019] In an alternative embodiment, the bearing assembly of the driven part and the active part is the second bearing assembly. The second bearing assembly includes a third bearing and a fourth bearing that are arranged at intervals along the axial direction of the driven part. The one-way transmission member is located between the third bearing and the fourth bearing.

[0020] Beneficial effects: The arrangement method of the second bearing assembly and the one-way transmission member in this form is more stable and reliable, can make the force on the driven part more uniform during rotation, and reduce the vibration risk of the driven part.

[0021] In an alternative embodiment, the driven part includes a first transmission section, a second transmission section, and a third transmission section in sequence along the direction close to the output end. The outer diameter of the second transmission section is larger than that of the first transmission section and the third transmission section. The connection surfaces between the second transmission section and the first transmission section and the third transmission section respectively form positioning surfaces. The second bearing assembly is in abutting cooperation with the positioning surfaces, and the one-way transmission member is in cooperation with the outer wall of the second transmission section.

[0022] Beneficial effects: The one-way transmission member is in cooperation with the outer wall of the second transmission section. The driven part in this form can directly position the second bearing assembly through its own structure, can effectively reduce the number of limiting components used, and is convenient for assembly.

[0023] In a second aspect, the present utility model also provides a multi-drive coupling system, which includes: a coupling transmission box having an output shaft and a plurality of main shafts; and a plurality of the above-mentioned motors installed on the coupling transmission box and in transmission cooperation with the main shafts. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of a partial cutaway of a motor according to an embodiment of the present invention;

[0026] Figure 2 For Figure 1 It is a cross-sectional view of the clutch assembly of the motor shown;

[0027] Figure 3 For Figure 2 It is an enlarged schematic view at position A in

[0028] Figure 4 For Figure 1 It is a cross-sectional view of the drive shaft of the motor shown;

[0029] Figure 5 For Figure 4 It is a three-dimensional schematic view of the drive shaft shown;

[0030] Figure 6 For Figure 1 It is a cross-sectional view when the drive coil and the driven part of the motor shown are engaged

[0031] Figure 7 It is a three-dimensional schematic view of a multi-drive coupling system according to an embodiment of the present invention

[0032] Figure 8 For Figure 7 It is a schematic diagram of a partial cutaway at the connection position between the coupling transmission box and the motor of the multi-drive coupling system shown.

[0033] Explanation of reference numerals:

[0034] 1. Drive unit; 2. Planetary reducer; 201. Output end;

[0035] 3. Clutch assembly; 301. Mounting seat;

[0036] 302. First bearing assembly; 3021. First bearing; 3022. Second bearing; 3023. Sleeve;

[0037] 303. Driving part; 3031. Drive shaft; 30311. Fitting groove; 30312. Through hole; 3032. Drive coil; 30321. Fitting hole; 3033. Fastening member; 3034. Sealing member;

[0038] 304. Second bearing assembly; 3041. Third bearing; 3042. Fourth bearing;

[0039] 305. Driven part; 3051. First transmission section; 3052. Second transmission section; 3053. Third transmission section; 3054. Positioning surface;

[0040] 306. One-way transmission part; 3071. gland; 3072. retaining ring;

[0041] 4. Coupling transmission box; 401. Output shaft; 402. Main shaft; 5. Housing. Detailed implementation mode

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0043] The following combines Figures 1 to 8 , to describe the embodiments of the present utility model.

[0044] According to an embodiment of the present utility model, on the one hand, a motor is provided for connecting to the main shaft 402 of a multi-drive coupling system. The motor includes: a driving unit 1 and a reduction unit. The reduction unit includes a housing 5, a bearing assembly, a clutch assembly 3 and a planetary speed reducer 2 installed in the housing 5; the output end 201 of the planetary speed reducer 2 is in transmission connection with the driving unit 1; the clutch assembly 3 includes a mounting seat 301, a driving part 303 and a driven part 305; the mounting seat 301 is detachably connected to the housing 5; the driving part 303 is installed inside the mounting seat 301 through the bearing assembly, is in transmission cooperation with the output end 201 and is adapted to drive the driven part 305 to rotate in a first direction; the driven part 305 is installed inside the driving part 303 through the bearing assembly, is used for connecting to the main shaft 402 and is adapted to drive the main shaft 402 to rotate in the first direction, or is driven by the main shaft 402 to rotate in the first direction and disengages from the driving part 303.

[0045] When applying the motor of this embodiment, bearing assemblies are arranged on the inner and outer sides of the driving part 303. Since there is good support on both the inner and outer sides of the driving part 303, when the driving part 303 rotates driven by the output end 201 and is in transmission cooperation with the driven part 305, the rotation process of the driving part 303 is more stable and reliable, which can effectively reduce the vibration generated during its operation, and further reduce the vibration generated by the overall motor. In addition, a clutch assembly 3 is arranged at the output end 201 of the planetary speed reducer 2. When the driving unit 1 or the planetary speed reducer 2 fails and cannot drive the driving part 303 to rotate, at this time, the driven part 305 can rotate independently driven by an external component, which can effectively avoid the problem that the entire device cannot work when a single motor fails in a multi-drive coupling system. This not only improves the working stability of the motor, but also improves the working flexibility of the motor, effectively solving the problem of poor working stability of the existing multi-drive coupling system.

[0046] In the related art, the failures of the motors and speed reducers in the multi-drive coupling system are usually non-mechanical failures, that is, the motors and speed reducers do not get stuck. If any one of the motors or speed reducers gets stuck, the entire system needs to be shut down, resulting in the equipment or system using this multi-drive coupling system also needing to be shut down for inspection, which will seriously affect the use and production process of the equipment.

[0047] However, for the motor of this embodiment, due to the presence of the clutch assembly 3, when a single motor in the multi-drive coupling system fails, the reverse drive with the coupling transmission box can be cut off through the clutch assembly 3, enabling the multi-drive coupling system to continue to operate, greatly improving the stability and reliability of the equipment's use and production process.

[0048] It should be noted that when the driving part 303 rotates driven by the output end 201 and drives the driven part 305 to rotate through the one-way transmission member 306, at this time, the driven part 305 rotates along the first direction. When the output end 201 cannot drive the driving part 303 to rotate, at this time, the driven part 305 rotates independently along the first direction driven by an external rotating component.

[0049] In a possible implementation manner, the speed reduction unit further includes a one-way transmission member 306; the driving part 303 drives the driven part 305 to rotate along the first direction through the one-way transmission member 306. This form of one-way transmission member has a simple and compact structure, occupies a small space, and has a low failure rate.

[0050] It can be understood that as an alternative implementation manner, the one-way transmission form between the driving part 303 and the driven part 305 can also be realized by means of a claw clutch, a roller one-way clutch, etc.

[0051] Preferably, the one-way transmission member 306 is a one-way wedge block, which can bear a large load and still maintain good performance under high loads.

[0052] In a possible implementation, the driving part 303 and the output end 201 are driven by their own splines. This form of transmission cooperation is simple and reliable, and no additional components are required to fix the transmission components. When the drive unit 1 and the planetary reducer 2 need to be overhauled and maintained, the connecting components outside the device can be removed to directly remove it. In addition, it is also possible to flexibly select whether to set the clutch assembly 3 according to the working conditions. When the clutch assembly 3 is not required, the clutch assembly 3 can be quickly and conveniently removed as a whole.

[0053] Wherein, one of the driving part 303 and the output end 201 is provided with an internal spline, and the other is provided with an external spline.

[0054] Preferably, the driving part 303 is provided with an external spline, and the output end 201 is provided with an internal spline.

[0055] In a possible implementation, as Figure 2 shown, the clutch assembly 3 further includes a limiting component disposed between the mounting seat 301 and the driving part 303. An outer wall at one end of the driving part 303 close to the planetary reducer 2 forms a shoulder outward, and an inner wall at one end of the mounting seat 301 close to the planetary reducer 2 forms a shoulder inward. One side of the bearing assembly abuts and cooperates with the shoulder, and the other side abuts and cooperates with the limiting component. The positioning method of the bearing assembly is simple and reliable. In this form, the mounting seat 301 and the driving part 303 can position one side of the bearing assembly through their own structures, which can effectively reduce the number of required positioning components and simplify the assembly steps.

[0056] It can be understood that as an alternative implementation, shoulders may not be formed on the driving part 303 and the mounting seat 301, and both sides of the bearing assembly are limited by the limiting component.

[0057] In a possible implementation, the bearing assembly between the driving part 303 and the mounting seat 301 is the first bearing assembly 302. The first bearing assembly 302 includes a first bearing 3021 and a second bearing 3022 arranged axially along the driving part 303. The first bearing 3021 and the second bearing 3022 are spaced apart by a sleeve 3023 sleeved on the outer wall of the driving part 303. This form of the first bearing assembly 302 has better support uniformity, can support multiple positions on the outer wall of the driving part 303 at the same time, can further improve the support reliability and stability, and reduce the vibration risk when the driving part 303 rotates.

[0058] It can be understood that as an alternative implementation, the number of bearings in the first bearing assembly 302 is not strictly limited and can be one or three or more bearings, which can be flexibly selected according to requirements.

[0059] Specifically, as Figure 2 shown, the limiting component includes a gland 3071 and a retaining ring 3072. The gland 3071 is arranged on the inner wall of the mounting seat 301 and can be in positioning cooperation with the outer ring of the second bearing 3022. The retaining ring 3072 is arranged on the outer wall of the driving part 303 and can be in positioning cooperation with the inner ring of the second bearing 3022. In addition, a sealing ring is arranged between the gland 3071 and the retaining ring 3072.

[0060] In a possible implementation, the driving part 303 includes a driving shaft 3031 and a driving ring 3032. The end face of the driving shaft 3031 away from the output end 201 has a fitting groove 30311 recessed inward. The driving ring 3032 is located in the fitting groove 30311. The driving shaft 3031 and the driving ring 3032 are connected by a fastening component 3033. The connection form of the driving shaft 3031 and the driving ring 3032 is simple and reliable. The manufacturing difficulty of such a split driving part 303 is lower, which is convenient for production and assembly.

[0061] Specifically, the specific type of the fastening component 3033 is not limited and can be screws, bolts, etc., as long as it can reliably connect the driving shaft 3031 and the driving ring 3032.

[0062] In a possible implementation, a fitting hole 30321 for cooperating with the fastening component 3033 is arranged on the end face of the driving ring 3032. A through hole 30312 for the fastening component 3033 to pass through is arranged on the driving shaft 3031 corresponding to the fitting hole 30321. A sealing member 3034 is arranged between the fastening component 3033 and the driving shaft 3031 to block the through hole 30312. The arrangement positions of the fitting hole 30321 and the through hole 30312 have little influence on the structural strength of the component. The sealing member 3034 can effectively improve the sealing performance at the through hole 30312 and prevent lubricating oil, etc. from leaking from the through hole 30312.

[0063] Specifically, as Figure 5 shown, the number of the through holes 30312 is multiple and they are arranged at intervals along the circumferential direction of the driving shaft 3031. The number of the fitting holes 30321 is also multiple and they are arranged at intervals along the circumferential direction of the end face of the driving ring 3032.

[0064] In a possible implementation, the bearing assembly of the driven part 305 and the driving part 303 is the second bearing assembly 304. The second bearing assembly 304 includes a third bearing 3041 and a fourth bearing 3042 that are axially spaced along the driven part 305. The one-way transmission member 306 is located between the third bearing 3041 and the fourth bearing 3042. The arrangement of the second bearing assembly 304 and the one-way transmission member 306 in this form is more stable and reliable, which can make the force on the driven part 305 more uniform during rotation and reduce the vibration risk of the driven part 305.

[0065] In a possible implementation, along the direction close to the output end 201, the driven part 305 successively includes a first transmission section 3051, a second transmission section 3052, and a third transmission section 3053. The outer diameter of the second transmission section 3052 is larger than that of the first transmission section 3051 and the third transmission section 3053. The connection surfaces of the second transmission section 3052 with the first transmission section 3051 and the third transmission section 3053 respectively form positioning surfaces 3054. The second bearing assembly 304 is in abutting cooperation with the positioning surfaces 3054, and the one-way transmission member 306 is in cooperation with the outer wall of the second transmission section 3052. The driven part 305 in this form can directly position the second bearing assembly 304 through its own structure, which can effectively reduce the number of limiting components used and facilitate assembly. In addition, the outer diameter of the second transmission section 3052 is larger, so its structural strength is also higher. Since the driving part 303 mainly drives the driven part 305 to rotate through the one-way transmission member 306, the arrangement position of the one-way transmission member 306 can effectively improve the reliability of the transmission process.

[0066] According to an embodiment of the present invention, on the other hand, a multi-drive coupling system is provided, which includes: a coupling transmission box 4 and a plurality of the above-mentioned motors. The coupling transmission box 4 has an output shaft 401 and a plurality of main shafts 402. The motors are installed on the coupling transmission box 4 and are in transmission cooperation with the main shafts 402.

[0067] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A motor for connecting to a main shaft (402) of a multi-drive coupling system, characterized in that, Comprising: A driving unit (1); A speed reduction unit, including a housing (5), a bearing assembly, a clutch assembly (3), and a planetary speed reducer (2) disposed within the housing (5); an output end (201) of the planetary speed reducer (2) is in transmission connection with the driving unit (1); the clutch assembly (3) includes a mounting seat (301), a driving part (303), and a driven part (305); the mounting seat (301) is detachably connected to the housing (5); the driving part (303) is disposed inside the mounting seat (301) through the bearing assembly, is in transmission cooperation with the output end (201), and is adapted to drive the driven part (305) to rotate in a first direction; the driven part (305) is disposed inside the driving part (303) through the bearing assembly, is used for connecting to the main shaft (402), and is adapted to drive the main shaft (402) to rotate in the first direction, or is driven by the main shaft (402) to rotate in the first direction and disengages from the driving part (303).

2. The motor according to claim 1, wherein The speed reduction unit further includes a one-way transmission member (306); the driving part (303) drives the driven part (305) to rotate in the first direction through the one-way transmission member (306).

3. The motor according to claim 1, characterized in that, The driving part (303) and the output end (201) are in spline transmission with each other.

4. The electric machine according to any one of claims 1 to 3, characterized in that The clutch assembly (3) further includes a limiting assembly disposed between the mounting seat (301) and the driving part (303). An outer wall of one end of the driving part (303) close to the planetary speed reducer (2) forms an outward shoulder, and an inner wall of one end of the mounting seat (301) close to the planetary speed reducer (2) forms an inward shoulder. One side of the bearing assembly abuts and cooperates with the shoulder, and the other side abuts and cooperates with the limiting assembly.

5. The electric machine according to any one of claims 1 to 3, characterized in that The bearing assembly between the driving part (303) and the mounting seat (301) is a first bearing assembly (302). The first bearing assembly (302) includes a first bearing (3021) and a second bearing (3022) arranged axially along the driving part (303). The first bearing (3021) and the second bearing (3022) are spaced apart by a sleeve (3023) sleeved on the outer wall of the driving part (303).

6. The electric machine according to any one of claims 1 to 3, characterized in that, The driving part (303) includes a driving shaft (3031) and a driving ring (3032). A mating groove (30311) recessed inward is provided on an end face of the driving shaft (3031) far from the output end (201). The driving ring (3032) is located in the mating groove (30311). The driving shaft (3031) and the driving ring (3032) are connected through a fastening member (3033).

7. The motor according to claim 6, characterized in that, A mating hole (30321) that mates with the fastening member (3033) is provided on the end face of the active coil (3032). A through hole (30312) for the fastening member (3033) to pass through is provided on the active shaft (3031) corresponding to the mating hole (30321). A seal (3034) is provided between the fastening member (3033) and the active shaft (3031) to block the through hole (30312).

8. The motor according to claim 2, wherein, The bearing assembly of the driven part (305) and the active part (303) is the second bearing assembly (304). The second bearing assembly (304) includes a third bearing (3041) and a fourth bearing (3042) that are axially spaced along the driven part (305). The one-way transmission member (306) is located between the third bearing (3041) and the fourth bearing (3042).

9. The motor according to claim 8, characterized in that, The driven part (305) includes a first transmission section (3051), a second transmission section (3052), and a third transmission section (3053) in sequence along the direction close to the output end (201). The outer diameter of the second transmission section (3052) is larger than that of the first transmission section (3051) and the third transmission section (3053). Positioning surfaces (3054) are respectively formed at the connection surfaces of the second transmission section (3052) with the first transmission section (3051) and the third transmission section (3053). The second bearing assembly (304) is in abutting cooperation with the positioning surfaces (3054). The one-way transmission member (306) is in cooperation with the outer wall of the second transmission section (3052).

10. A multi-drive coupling system, characterized in that, Comprising: A coupling transmission box (4) having an output shaft (401) and a plurality of main shafts (402); A plurality of motors according to any one of claims 1 to 9, installed in the coupling transmission box (4) and in transmission cooperation with the main shafts (402).

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