CN217883039U - Multi-motor coupling structure - Google Patents

Abstract

The utility model discloses a many motors coupling structure relates to mechatronic structure technical field. The multi-motor coupling structure comprises a shell, at least two stator cavities are sequentially arranged on the shell around a preset axial line of the shell, each stator cavity is provided with a motor structure, each motor structure comprises a motor stator fixed in the stator cavities and a motor rotor rotatably connected in the motor stator, and each motor rotor is in transmission connection with a gear transmission assembly. In this many motor coupling structure, use in the casing to predetermine the axial line as the center, set up a plurality of stator cavities along circumference, connect electric motor rotor respectively, convenient assembling can avoid many motor coupling structure to wait single direction length on the axial too big, compact structure is convenient for deposit and the transportation, uses more in a flexible way.

Description

Multi-motor coupling structure

Technical Field

The utility model relates to a mechatronic structure technical field, in particular to many motor coupling structure.

Background

Aiming at the problems of high energy consumption and difficult frequency conversion transformation of the conventional high-power motor, in the prior art, a plurality of motors with smaller power are sequentially arranged along the axial direction, and the motors are coupled and output to replace a direct drive motor. However, the axial length of the multi-motor coupling structure is too large, which brings constraints to the use of the multi-motor coupling structure.

Therefore, how to provide a multi-motor coupling structure with a more compact structure is a technical problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a multi-motor coupling structure, which is compact.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a many motor coupling structure, includes the casing, two at least stator cavities center on the predetermined axial line of casing is seted up in proper order on the casing, each the stator cavity sets up the motor structure respectively, the motor structure including be fixed in the motor stator of stator cavity with rotate connect in electric motor rotor among the motor stator, each electric motor rotor is equal transmission connection in gear drive subassembly.

Preferably, the stator cavity axially penetrates through the casing, a front motor flange is sealed at the front end of the stator cavity in the axial direction, a rear motor flange is sealed at the rear end of the stator cavity in the axial direction, and the motor stator is located between the front motor flange and the rear motor flange; the rear end of the motor rotor in the axial direction is rotatably connected with the motor rear flange, the front end of the motor rotor in the axial direction penetrates through the motor front flange and then extends out, and the motor rotor is rotatably connected with the motor front flange.

Preferably, the electric vehicle further comprises a junction box connected to the rear end of the casing in the axial direction; and a wire outlet groove is formed in one side of the stator cavity, which is close to the preset axial line, and a cable connected with the motor stator is electrically connected with the junction box after penetrating out of the wire outlet groove.

Preferably, the gear assembly comprises a sun assembly and a planet assembly; the front ends of the motor rotors in the axial direction are respectively and fixedly connected with parallel shaft pinions, the parallel shaft pinions are simultaneously connected with the input end of the sun gear assembly in a transmission manner, and the output end of the sun gear assembly is connected with the output end of the planet assembly in a transmission manner.

Preferably, the sun assembly and the planet assemblies are both externally disposed to the housing; in the axial direction, the sun gear assembly is disposed between the planet assembly and the housing.

Preferably, the sun gear assembly comprises a central shaft, a parallel shaft bull gear and a sun gear; the center pin rotate connect in the casing, parallel axis gear wheel, sun gear cup joint in proper order along the axial and are fixed in the center pin, each parallel axis pinion meshing simultaneously connect in the parallel axis gear wheel, the input transmission of planet subassembly connect in the sun gear.

Preferably, the sun wheel assembly further comprises a sun wheel shaft sleeve sleeved on the central shaft; the two ends of the sun wheel shaft sleeve in the axial direction respectively abut against the large parallel shaft gear and the sun wheel.

Preferably, the front end of the machine shell in the axial direction is fixedly connected with an annular front body shell, and at least part of the gear transmission assembly is arranged in the front body shell; the inner peripheral surface of the front body shell is provided with a front shell inner gear; the planet assembly comprises a planet carrier and a planet wheel; the planet carrier is fixedly provided with a planet shaft at the rear end in the axial direction, the planet shaft is connected with the planet wheel in a rotating mode, and the planet wheel is simultaneously connected with the front shell internal gear and the sun gear in a meshing mode.

Preferably, the front end port of the front body shell in the axial direction is covered with a front shell flange, the front end of the planet carrier in the axial direction is fixedly provided with an output shaft, and the output shaft is rotatably connected with the front shell flange; the output shaft of the planetary assembly axially passes through the front flange of the outer shell and then extends forwards out of the front body shell, and the rest part of the planetary assembly and the sun gear assembly are positioned in a gear cavity enclosed among the front body shell, the machine shell and the front flange of the outer shell.

Preferably, the inner circumferential surface of the front body shell includes a rear ring surface and a front ring surface, the front ring surface and the rear ring surface are sequentially arranged from front to back in the axial direction, the radial dimension of the front ring surface is smaller than that of the rear ring surface, so that a stepped surface facing the rear side is formed between the front ring surface and the rear ring surface, the front shell is internally provided with a gear on the front ring surface, at least part of the structure of the parallel shaft pinion extends forwards into the front body shell along the axial direction, the parallel shaft pinion is located behind the stepped surface, and a gap is formed between the parallel shaft pinion and the stepped surface as well as between the parallel shaft pinion and the rear ring surface.

The utility model provides a many motors coupling structure, including the casing, two at least stator cavities set up the motor structure respectively on the casing in proper order around the predetermined axial line of casing, and the motor structure is connected in the electric motor rotor of electric motor stator including the electric motor stator and the rotation that are fixed in the stator cavity, and the equal transmission of each electric motor rotor is connected in gear drive subassembly.

In this many motor coupling structure, use in the casing to predetermine the axial line as the center, set up a plurality of stator cavities along circumference, connect electric motor rotor respectively, convenient assembling can avoid many motor coupling structure to wait single direction length on the axial too big, compact structure is convenient for deposit and the transportation, uses more in a flexible way.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an axial cross-sectional view of a first embodiment of a multi-motor coupling structure provided in the present invention;

fig. 2 is a front view of a housing according to a first embodiment of the multi-motor coupling structure of the present invention;

fig. 3 is an axial cross-sectional view of a housing according to a first embodiment of the multi-motor coupling structure provided by the present invention;

fig. 4 is a side view of a motor stator according to a first embodiment of the multi-motor coupling structure of the present invention;

fig. 5 is a side view of a motor front flange according to a first embodiment of the multi-motor coupling structure provided by the present invention;

fig. 6 is a side view of a rear flange of a motor according to a first embodiment of the multi-motor coupling structure of the present invention;

fig. 7 is an axial cross-sectional view of a motor structure according to a first embodiment of the multi-motor coupling structure provided by the present invention;

fig. 8 is an axial cross-sectional view of a rotor of an electric machine according to a first embodiment of the multi-motor coupling structure provided by the present invention;

fig. 9 is an axial cross-sectional view of a sun gear assembly according to a first embodiment of the multi-motor coupling structure of the present invention;

fig. 10 is a front view of a parallel axis pinion gear of a first embodiment of a multi-motor coupling structure according to the present invention;

fig. 11 is a front view of a parallel axis gearwheel of a first embodiment of a multi-motor coupling structure according to the present invention;

fig. 12 is a front view of a sun gear according to a first embodiment of the multi-motor coupling structure of the present invention;

fig. 13 is an axial cross-sectional view of a central shaft of a first embodiment of a multi-motor coupling structure provided by the present invention;

fig. 14 is an axial cross-sectional view of a planet wheel assembly of a first embodiment of a multi-motor coupling structure provided by the present invention;

fig. 15 is an axial cross-sectional view of a planet carrier according to a first embodiment of the multi-motor coupling structure of the present invention;

fig. 16 is an axial cross-sectional view of a planet bearing according to a first embodiment of the multi-motor coupling structure provided by the present invention;

fig. 17 is an axial cross-sectional view of a planet wheel according to a first embodiment of the multi-motor coupling structure provided by the present invention;

fig. 18 is an axial cross-sectional view of a front body case of a first embodiment of a multi-motor coupling structure provided by the present invention;

fig. 19 is a front view of a front body shell of a first embodiment of a multi-motor coupling structure provided by the present invention;

fig. 20 is an axial cross-sectional view of a front flange of a housing according to a first embodiment of the multi-motor coupling structure provided in the present invention.

Reference numerals:

the structure comprises a machine shell 1, a stator cavity 1.1, a front inner spigot 1.1, a rear inner spigot 1.1.2, a cavity inner hole 1.1.3, a wire outlet groove 1.2, a machine shell front bearing seat 1.3, a machine shell inner spigot 1.4, a ground pin 1.5, a machine shell lifting lug 1.6 and a preset axial line 1.7;

a motor stator 2, an outer circumferential surface 2.1;

the motor comprises a motor rotor 3, a rotor front bearing 3.1, a rotor rear bearing 3.2, a bearing retainer ring 3.3, a spline shaft 3.4, a rotor groove 3.4.1, a rotor external spline 3.4.2 and a rotor external thread 3.4.3;

the motor front flange 4, the front flange outer spigot 4.1, the front flange bearing seat 4.2, the front flange step 4.3 and the front flange through hole 4.4;

a rear flange 5 of the motor, an outer spigot 5.1 of the rear flange and a bearing seat 5.2 of the rear flange;

a front flange oil seal 6;

a junction box 7;

a rotor clamp spring 8;

a parallel axis pinion 9, a pinion internal spline 9.1;

a rotor round nut 10;

rotor round nut stop washer 11;

a gland 12;

the device comprises a sun wheel component 13, a central shaft 13.1, a central shaft groove 13.1.1, a central shaft external spline 13.1.2, a central shaft snap spring 13.2, a parallel shaft big gear 13.3, a big gear internal spline 13.3.1, a sun wheel 13.4, a sun wheel internal spline 13.4.1, a sun wheel shaft sleeve 13.5, a sun wheel round nut 13.6, a sun wheel round nut stop gasket 13.7, a sun wheel press cover 13.8, a sun wheel front bearing 13.9 and a sun wheel rear bearing 13.10;

the planet assembly 14, the planet carrier 14.1, the planet shaft 14.1.1, the planet bearing seat 14.1.1, the planet shaft groove 14.1.2, the planet carrier front bearing 14.2, the planet wheel bearing 14.3, the bearing outer circumferential surface 14.3.1, the planet shaft snap spring 14.4, the planet wheel 14.5, the planet wheel inner hole 14.5.1, the planet wheel groove 14.5.2, the planet wheel snap spring 14.6, the planet wheel shaft sleeve 14.7 and the output shaft 14.8;

the structure comprises a front shell 15, a front shell outer spigot 15.1, a front shell inner gear 15.2, a front shell step 15.3, a cooling water channel 15.4, an oil injection hole 15.5, an air hole 15.6, an oil drain hole 15.7, a front shell inner spigot 15.8, a front shell lifting lug 15.9, a step surface 15.10, a front ring surface 15.11 and a rear ring surface 15.12;

a shell front flange 16, a shell bearing seat 16.1, a shell outer spigot 16.2 and a shell step 16.3;

and a housing oil seal 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The core of the utility model is to provide a many motors coupling structure, its structure is comparatively compact.

The utility model provides a many motor coupling structure's concrete embodiment one please refer to fig. 1 to fig. 20, including casing 1, two at least stator cavities 1.1 are seted up on casing 1 around the predetermined axial line 1.7 of casing 1 in proper order, and specifically, casing 1 is the cylinder structure, predetermines axial line 1.7 and is the axial lead of casing 1.

In this embodiment, for convenience of description, the axial direction extends in the front-rear direction, where one end is front and the other end is rear, and the left side corresponds to the front side and the right side corresponds to the rear side based on the orientation of fig. 1, which should not be construed as limiting the present application.

Each stator cavity 1.1 sets up the motor structure respectively, specifically, stator cavity 1.1 sets up four, and correspondingly, the motor structure sets up four. In other embodiments, the number of stator cavities 1.1 may be five or other numbers.

The motor structure is including being fixed in stator cavity 1.1's motor stator 2 and rotating the electric motor rotor 3 of connecting in motor stator 2, and each electric motor rotor 3 all transmission connection is in gear drive subassembly.

The multi-motor coupling structure in the embodiment can be a permanent magnet coupling motor, wherein a plurality of stator cavities 1.1 are arranged in the casing 1 along the circumferential direction by taking a preset axial line 1.7 as a center and are respectively connected with the motor rotor 3, so that the multi-motor coupling structure is convenient to assemble, the excessive length of the multi-motor coupling structure in the axial direction in a single direction can be avoided, the structure is compact, the storage and the transportation are convenient, and the use is more flexible.

Further, as shown in fig. 3 to 7, the stator cavity 1.1 axially penetrates through the casing 1, a front end of the stator cavity 1.1 is covered with a front motor flange 4, a rear end of the stator cavity is covered with a rear motor flange 5, and the stator 2 of the motor is located between the front motor flange 4 and the rear motor flange 5. Because the stator cavity 1.1 is the through-hole structure that the axial is run through, the assembly of the motor structure of being convenient for. Of course, in other embodiments, the stator cavity 1.1 may also be a blind hole structure with a unidirectional opening.

Specifically, the stator cavity 1.1 includes a cavity inner hole 1.1.3 arranged to penetrate axially, and a front inner spigot 1.1.1 arranged at a front end opening of the cavity inner hole 1.1.3 and a rear inner spigot 1.1.2 arranged at a rear end opening of the cavity inner hole 1.1.3. After the motor structure is installed in the stator cavity 1.1, the outer circumferential surface 2.1 of the motor stator 2 is in matched connection with the cavity inner hole 1.1.3, the motor front flange 4 is in matched plug-in connection with the front inner spigot 1.1.1 of the stator cavity 1.1 through the front flange outer spigot 4.1 on the motor front flange, and the motor rear flange 5 is in matched plug-in connection with the rear inner spigot 1.1.2 of the stator cavity 1.1 through the rear flange outer spigot 5.1 on the motor rear flange. The stator cavity 1.1 can be sealed by the motor front flange 4 and the motor rear flange 5.

Wherein, the rear end of motor rotor 3 rotates and connects in motor rear flange 5, and stretches out forward after the front end passes motor front flange 4, and motor rotor 3 rotates and connects motor front flange 4. The motor rotor 3 is supported by the motor front flange 4 and the motor rear flange 5 together, so that the stable operation of the motor rotor 3 can be ensured. Specifically, as shown in fig. 5 and 6, a front flange through hole 4.4 is formed in the motor front flange 4, a front flange bearing seat 4.2 is fixedly arranged in the front flange through hole 4.4, and the motor rotor 3 is rotatably connected to the front flange bearing seat 4.2 through a rotor front bearing 3.1, so as to ensure the smoothness of rotation. The rear flange bearing seat 5.2 is arranged on the rear flange 5 of the motor, and the rear end part of the motor rotor 3 is rotationally connected with the rear flange bearing seat 5.2 through the rotor rear bearing 3.2.

In addition, for the sealing of the front flange through hole 4.4 of the front flange 4 of the motor, specifically, a front flange oil seal hole is further arranged at the front end of the front flange 4 and the front end of the front flange through hole 4.4, a front flange oil seal 6 is arranged in the front flange oil seal hole, a bearing retainer ring 3.3 is sleeved in front of a rotor front bearing 3.1 on the motor rotor 3, and the inner lip of the front flange oil seal 6 is matched with the bearing retainer ring 3.3 of the motor rotor 3 to complete the sealing of the stator cavity. Wherein, the rear end of the front flange oil seal 6 is propped against the front flange step 4.3 in the front flange through hole 4.4.

Further, as shown in fig. 1 and 3, the multi-motor coupling structure further includes a junction box 7 connected to the rear end of the casing 1 in the axial direction. Stator cavity 1.1 sets up outlet groove 1.2 in one side that is close to preset axial line 1.7, and the cable that motor stator 2 connects is worn out the back electricity through outlet groove 1.2 and is connected in terminal box 7, can realize that each motor structure is from casing 1 middle part centralized line, and unified access terminal box 7 is convenient for assemble, avoids the electric wire confusion. Specifically, the cable to which the motor stator 2 is connected includes three phase lines and signal lines of the motor stator 2.

Further, the gear assembly includes a sun assembly 13 and a planet assembly 14. The front end of each motor rotor 3 is fixedly connected with a parallel shaft pinion 9, each parallel shaft pinion 9 is simultaneously connected with the input end of a sun gear component 13 in a transmission manner, and the output end of the sun gear component 13 is connected with the output end of a planet component 14 in a transmission manner. Through the cooperation of the sun gear assembly 13 and the planet assemblies 14, stable output of power can be realized.

In order to realize the connection between the pinion 9 of the parallel shaft and the motor rotor 3, optionally, as shown in fig. 7, 8 and 10, a spline shaft 3.4 is integrally arranged at the front end of the motor rotor 3, a rotor external spline 3.4.2 is arranged on the outer peripheral surface of the spline shaft 3.4, a rotor groove 3.4.1 is arranged at the rear end of the spline shaft 3.4 at the rotor external spline 3.4.2, and a rotor clamp spring 8 is clamped in the rotor groove 3.4.1, as shown in fig. 10, the pinion 9 of the parallel shaft is engaged with the rotor external spline 3.4.2 at the spline shaft 3.4 through the pinion internal spline 9.1 thereon to realize circumferential limit, in addition, a rotor round nut stop washer 11 is sleeved at the front end of the spline shaft 3.4 at the rotor external spline 3.4.2, and a rotor round nut 10 is in threaded connection with the pinion 3.4 to axially press the rotor round nut stop washer 11 and the spline shaft 9 of the pinion 9 at the rotor clamp spring 8, thereby realizing the axial fixation of the pinion 9 of the parallel shaft on the 3.4. Of course, in other embodiments, the parallel shaft pinion 9 may be integrally formed directly on the motor rotor 3.

Further, as shown in fig. 1, the sun gear assembly 13 and the planet assemblies 14 are both externally disposed to the housing 1. In the axial direction, the sun gear assembly 13 is arranged between the planet assembly 14 and the machine shell 1, so that the processing difficulty of the machine shell 1 can be reduced, and the assembly flexibility can be improved.

Further, as shown in fig. 9, 11 to 13, the sun gear assembly 13 includes a central shaft 13.1, a parallel shaft large gear 13.3 and a sun gear 13.4. The central shaft 13.1 is rotatably connected to the casing 1, the parallel shaft large gear 13.3 and the sun gear 13.4 are sequentially sleeved and fixed on the central shaft 13.1 along the axial direction, specifically, the axial line of the central shaft 13.1 and the preset axial line 1.7 of the casing 1 are arranged in a collinear manner, and the parallel shaft large gear 13.3 is arranged in front of the sun gear 13.4. The parallel shaft small gears 9 are simultaneously meshed and connected with a parallel shaft big gear 13.3, and the input end of the planetary assembly 14 is in transmission connection with a sun gear 13.4. The sun wheel component has a simple structure and reliable transmission.

Further, as shown in fig. 9, the sun gear assembly 13 further includes a sun gear sleeve 13.5 sleeved on the central shaft 13.1. Two ends of the sun wheel shaft sleeve 13.5 in the axial direction respectively abut against the big gear 13.3 and the sun wheel 13.4 of the parallel shaft. Because the sun wheel shaft sleeve 13.5 is separated between the large parallel shaft gear 13.3 and the sun wheel 13.4, the axial distance between the large parallel shaft gear 13.3 and the sun wheel 13.4 can be adaptively adjusted by selecting the sun wheel shaft sleeves 13.5 with different lengths.

In order to realize the fixed connection of the parallel shaft big gear 13.3 and the sun gear 13.4 on the central shaft 13.1, optionally, as shown in fig. 13, a central shaft external spline 13.1.2 is arranged on the outer peripheral surface of the middle part of the central shaft 13.1, the sun gear 13.4, the sun gear shaft sleeve 13.5 and the parallel shaft big gear 13.3 are sequentially sleeved on the central shaft external spline 13.1.2 from front to back, and the sun gear internal spline 13.4.1 of the sun gear 13.4, the internal spline of the sun gear shaft sleeve 13.5 and the big gear internal spline 13.3.1 of the parallel shaft big gear 13.3 are all engaged with the central shaft external spline 13.1.2 of the central shaft 13.1. A central shaft groove 13.1.1 is formed in the central shaft 13.1 and located at the rear end of the central shaft external spline 13.1.2, and a central shaft snap spring 13.2 is clamped in the central shaft groove 13.1.1 so as to axially locate the rear end of the parallel shaft big gear 13.3. A sun wheel round nut stop washer 13.7 is sleeved at the front end of a central shaft external spline 13.1.2 on the central shaft 13.1, the central shaft 13.1 is further in threaded connection with a sun wheel round nut 13.6, the sun wheel round nut 13.7, a sun wheel 13.4, a sun wheel shaft sleeve 13.5 and a parallel shaft big gear 13.3 are axially pressed to a central shaft clamp spring 13.2 by the sun wheel round nut 13.6, and the parallel shaft big gear 13.3 and the sun wheel 13.4 are axially fixed on the central shaft 13.1. Of course, in other embodiments, the parallel shaft large gear 13.3 and the sun gear 13.4 may be directly and integrally formed on the central shaft 13.1.

Further, as shown in fig. 14 to 19, a front end of the casing 1 is fixedly connected with a front annular casing 15, and the front casing 15 is inserted into and matched with a casing inner front end 1.4 at the front end of the casing 1 through a front casing outer front end 15.1 at the rear end of the front casing. At least part of the gear assembly is built into the front body case 15 to protect the gear assembly. The front shell inner gear 15.2 is provided on the inner peripheral surface of the front shell 15, and the front shell inner gear 15.2 is integrally formed on the inner peripheral surface of the front shell 15.

The planetary assembly 14 comprises a planet carrier 14.1 and planet wheels 14.5. The rear end of planet carrier 14.1 is fixed with planet axle 14.1.1, specifically, planet axle 14.1.1 is integrally arranged on planet carrier 14.1. The planet shaft 14.1.1 is rotatably connected with the planet wheel 14.5, the planet wheel 14.5 is meshed with the front shell internal gear 15.2 and the sun wheel 13.4 at the same time, and the transmission between the sun wheel component 13 and the planet component 14 can be reliably realized.

In order to ensure smooth operation of the central shaft 13.1 and the planetary carrier 14.1, as shown in fig. 1 and 9, preferably, the rear end of the central shaft 13.1 is rotatably connected to the front housing bearing seat 1.3 on the front end surface of the housing 1 through a rear sun gear bearing 13.10, and the front end of the central shaft 13.1 is rotatably connected to the planetary carrier 14.1 through a front sun gear bearing 13.9.

Further, as shown in fig. 1 and 14, the front end port of the front body shell 15 is covered with a shell front flange 16, the front end of the planet carrier 14.1 is fixedly provided with an output shaft 14.8, and the output shaft 14.8 is rotatably connected to the shell front flange 16. The output shaft 14.8 of the planetary assembly 14 extends axially through the front flange 16 of the housing and extends forward out of the front housing 15, and the rest of the planetary assembly 14 and the sun gear assembly 13 are located in a gear cavity enclosed between the front housing 15, the machine housing 1 and the front flange 16 of the housing.

Specifically, the output shaft 14.8 is rotatably connected to the housing bearing seat 16.1 of the housing front flange 16 through the planet carrier front bearing 14.2, wherein the sun gear front bearing 13.9 is located at the rear side of the planet carrier front bearing 14.2, and is equivalent to the rear bearing of the planet carrier 14.1, and the two bearings are matched to stably support the planet carrier 14.1.

In order to assemble the planet wheels 14.5 on the planet shaft 14.1.1, optionally, as shown in fig. 14 and fig. 15, the planet shaft 14.1.1 is rotatably connected with the planet wheels 14.5 through a planet wheel bearing 14.3, a planet shaft groove 14.1.2 is formed in the planet shaft 14.1.1 and located behind the planet wheel bearing 14.3, a planet shaft snap spring 14.4 is snapped into the planet shaft groove 14.1.2 to position the inner ring of the planet wheel bearing 14.3 at the rear end in the axial direction, and the front end of the inner ring of the planet wheel bearing 14.3 can be directly positioned through a shaft shoulder on the planet shaft 14.1.1. In addition, the outer bearing circumference 14.3.1 of the planet wheel bearing 14.3 is in fit connection with a planet wheel inner hole 14.5.1 of the planet wheel 14.5, two planet wheel grooves 14.5.2 are arranged on the planet wheel inner hole 14.5.1 of the planet wheel 14.5, specifically, the two planet wheel snap springs 14.6 are clamped in the planet wheel grooves 14.5.2 respectively, so that the outer ring of the planet wheel bearing 14.3 is axially positioned.

Wherein, a gear cavity, specifically a sealed cavity, is formed among the front body shell 15, the machine shell 1 and the front flange 16 of the outer shell to ensure the protection capability. In order to ensure the sealing performance, at the joint of the front housing flange 16 and the front housing 15, specifically, the outer housing spigot 16.2 on the front housing flange 16 is in plug-in fit with the inner housing spigot 15.8 on the front housing 15, meanwhile, as shown in fig. 20, the front housing flange 16 is provided with the outer housing oil seal 17, the rear end of the outer housing oil seal 17 abuts against the outer housing step 16.3, the outer housing bearing seat 16.1 is arranged at the rear side of the outer housing step 16.3, the front end of the front planet carrier bearing 14.2 on the output shaft 14.8 is further sleeved with the planet wheel shaft sleeve 14.7, and the inner lip of the outer housing oil seal 17 is matched with the planet wheel shaft sleeve 14.7 of the planet wheel assembly 14 to complete the sealing of the gear cavity at the joint of the front housing flange 16 and the output shaft.

Further, as shown in fig. 1 and 18, the inner circumferential surface of the front body shell 15 includes a rear annular surface 15.12 and a front annular surface 15.11, the front annular surface 15.11 and the rear annular surface 15.12 are sequentially arranged from front to rear in the axial direction, the radial dimension of the front annular surface 15.11 is smaller than that of the rear annular surface 15.12, so that a stepped surface 15.10 facing the rear side is formed between the front annular surface 15.11 and the rear annular surface 15.12, the front shell internal gear 15.2 is arranged on the front annular surface 15.11, at least part of the parallel shaft pinion 9 extends forwards in the axial direction into the front body shell 15, the parallel shaft pinion 9 is located behind the stepped surface 15.10, and gaps are formed between the parallel shaft pinion 9 and the stepped surface 15.10 and the rear annular surface 15.12 to facilitate the flow of the lubricating oil.

Wherein, an oil filling hole 15.5 and an oil drain hole 15.7 are penetratingly arranged on the front body shell 15, so that lubricating oil can enter and exit the front body shell 15 through the oil filling hole 15.5 and the oil drain hole 15.7. Specifically, when the front shell 15 is in a horizontal state in the axial direction, oil injection holes 15.5 are respectively arranged on the two sides of the center line of the front shell 15 in a penetrating manner, and the center line of the oil injection hole 15.5 and the center line of the front shell 15 are arranged in a coplanar manner and are positioned on a horizontal plane. An oil drain hole 15.7 is located at the bottom end of the front body case 15. In order to further ensure the smooth flow of the oil, the top of the front body shell 15 is also provided with air holes 15.6.

In this embodiment, the front ring surface 15.11, the stepped surface 15.10 and the rear ring surface 15.12 form a front shell step 15.3, and the optimal oil levels of the pinion gear 9, the bull gear 13.3 and the planet assembly 14 of the parallel shaft can be matched and lubricated simultaneously by adjusting the axial position of the stepped surface 15.10.

Further, as shown in fig. 18, a cooling water channel 15.4 is further disposed on the front body shell 15 to cool the gear cavity, so as to ensure operation safety.

In the multi-motor coupling structure of the multi-motor coupling structure in this embodiment, when the whole machine is installed, the machine is installed through the ground feet 1.5 on the machine shell 1, and the machine shell is hoisted through the two machine shell lifting lugs 1.6 on the machine shell 1 and the two front shell lifting lugs 15.9 on the front shell 15. The transmission process of the whole machine is as follows: the motor driver drives the motor rotor 3 of each motor structure to rotate and transmit the rotation to the parallel shaft pinions 9, all the parallel shaft pinions 9 are simultaneously in meshing transmission with the parallel shaft bull gears 13.3, the parallel shaft bull gears 13.3 coaxially drive the sun gears 13.4 to rotate, the sun gears 13.4 are meshed with the planet gears 14.5, the planet gears 14.5 are simultaneously meshed with the front shell internal gear 15.2 to drive the planet carrier 14.1 to rotate, and an output shaft 14.8 on the planet carrier 14.1 is used as the output of the whole machine.

In the multi-motor coupling structure in the embodiment, the power of a plurality of motors is coupled through the parallel gears, so that the planetary reducer can be added to further reduce the speed under the working condition of low rated rotating speed. The whole structure can be simplified into the assembly of the stator and the rotor, the parallel shaft gear, the sun wheel assembly 13, the planet assembly 14, the machine shell 1 and the front body shell 15, the whole assembly process is convenient, the standardization is easy, the whole structure is convenient to produce and assemble, the related parts have strong machinability, the processing cost is controllable, and the structure is reliable and compact. Through gear cooperation, spline cooperation, compensate processing error and assembly error that this kind of special construction of many motors of coupling probably produced, reduce the internal stress and bring extra friction loss, guarantee complete machine efficient transmission efficiency, power density is high, transmission efficiency is high.

It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In addition, in the description of the present invention, "a plurality", and "a plurality" mean two or more unless otherwise specified.

The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above is to the multi-motor coupling structure provided by the present invention is described in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.

Claims (10)

1. The utility model provides a many motor coupling structure, its characterized in that includes casing (1), and two at least stator cavities (1.1) centers on the default axial line (1.7) of casing (1) are seted up in proper order on casing (1), each stator cavity (1.1) sets up the motor structure respectively, the motor structure is including being fixed in motor stator (2) and the rotation of stator cavity (1.1) connect in motor rotor (3) in motor stator (2), each motor rotor (3) equal transmission connection in gear drive subassembly.

2. The multi-motor coupling structure according to claim 1, wherein the stator cavity (1.1) axially penetrates through the casing (1), a front end of the stator cavity (1.1) in the axial direction is covered with a front motor flange (4) and a rear end of the stator cavity is covered with a rear motor flange (5), and the motor stator (2) is located between the front motor flange (4) and the rear motor flange (5); the rear end of the motor rotor (3) in the axial direction is rotatably connected with the motor rear flange (5), the front end in the axial direction penetrates through the motor front flange (4) and then extends out, and the motor rotor (3) is rotatably connected with the motor front flange (4).

3. The multi-motor coupling structure according to claim 1, further comprising a junction box (7) connected to a rear end of the casing (1) in an axial direction; a wire outlet groove (1.2) is formed in one side, close to the preset axial line (1.7), of the stator cavity (1.1), and a cable connected with the motor stator (2) penetrates through the wire outlet groove (1.2) and then is electrically connected with the junction box (7).

4. Multiple-motor coupling structure according to any one of claims 1 to 3, characterized in that said gear transmission assembly comprises a sun assembly (13) and a planetary assembly (14); the front end of each motor rotor (3) in the axial direction is fixedly connected with a parallel shaft pinion (9) respectively, each parallel shaft pinion (9) is simultaneously connected with the input end of the sun gear assembly (13) in a transmission manner, and the output end of the sun gear assembly (13) is connected with the output end of the planet assembly (14) in a transmission manner.

5. Multi-motor coupling structure according to claim 4, characterized in that said sun assembly (13) and said planet assemblies (14) are both external to said casing (1); the sun wheel assembly (13) is arranged between the planet assembly (14) and the machine shell (1) in the axial direction.

6. Multi-motor coupling structure according to claim 4, characterized in that the sun wheel assembly (13) comprises a central shaft (13.1), a parallel shaft gearwheel (13.3) and a sun wheel (13.4); the central shaft (13.1) is rotationally connected with the machine shell (1), the parallel shaft big gears (13.3) and the sun gear (13.4) are sequentially sleeved and fixed on the central shaft (13.1) along the axial direction, the parallel shaft small gears (9) are simultaneously meshed and connected with the parallel shaft big gears (13.3), and the input end of the planetary assembly (14) is in transmission connection with the sun gear (13.4).

7. The multi-motor coupling structure according to claim 6, wherein the sun wheel assembly (13) further comprises a sun wheel sleeve (13.5) sleeved on the central shaft (13.1); the two ends of the sun wheel shaft sleeve (13.5) in the axial direction respectively abut against the large gear (13.3) of the parallel shaft and the sun wheel (13.4).

8. The multi-motor coupling structure according to claim 6, wherein the casing (1) is fixedly connected with an annular front body casing (15) at a front end in an axial direction, and at least part of the gear transmission assembly is built in the front body casing (15); a front shell internal gear (15.2) is arranged on the inner circumferential surface of the front shell (15); the planetary assembly (14) comprises a planetary carrier (14.1) and a planetary wheel (14.5); the planet carrier (14.1) is fixed with a planet shaft (14.1.1) at the rear end in the axial direction, the planet shaft (14.1.1) is connected with the planet wheel (14.5) in a rotating mode, and the planet wheel (14.5) is simultaneously meshed with the front shell inner gear (15.2) and the sun wheel (13.4) in a connecting mode.

9. The multi-motor coupling structure according to claim 8, wherein a front end port of the front body shell (15) in the axial direction is covered with a front shell flange (16), the planet carrier (14.1) is fixedly provided with an output shaft (14.8) in the front end port in the axial direction, and the output shaft (14.8) is rotatably connected with the front shell flange (16); the output shaft (14.8) of the planetary assembly (14) axially passes through the front shell flange (16) and extends forwards and backwards to the front body shell (15), and the rest part of the planetary assembly (14) and the sun wheel assembly (13) are positioned in a gear cavity enclosed among the front body shell (15), the machine shell (1) and the front shell flange (16).

10. The multi-motor coupling structure according to claim 8, wherein the inner circumferential surface of the front housing (15) comprises a rear annular surface (15.12) and a front annular surface (15.11), the front annular surface (15.11) and the rear annular surface (15.12) are arranged in the axial direction from front to rear, the radial dimension of the front annular surface (15.11) is smaller than the radial dimension of the rear annular surface (15.12) so that a stepped surface (15.10) facing the rear side is formed between the front annular surface (15.11) and the rear annular surface (15.12), the front housing internal gear (15.2) is arranged on the front annular surface (15.11), at least part of the parallel shaft pinion (9) extends axially forward into the front housing (15), the parallel shaft pinion (9) is located behind the stepped surface (15.10), and a gap is formed between the parallel shaft pinion (9) and the stepped surface (15.10) and the rear annular surface (15.12).

Images