CN217422052U - Double-motor direct-drive reduction gearbox with planetary reduction mechanism - Google Patents
Double-motor direct-drive reduction gearbox with planetary reduction mechanism Download PDFInfo
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- CN217422052U CN217422052U CN202220717531.2U CN202220717531U CN217422052U CN 217422052 U CN217422052 U CN 217422052U CN 202220717531 U CN202220717531 U CN 202220717531U CN 217422052 U CN217422052 U CN 217422052U
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- permanent magnet
- reduction gearbox
- magnet synchronous
- synchronous motor
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Abstract
The utility model discloses a double-motor direct-drive reduction gearbox with a planetary reduction mechanism, which comprises a reduction gearbox, wherein a power component is arranged outside the reduction gearbox, and a transmission component is arranged inside the reduction gearbox; the power assembly comprises a first permanent magnet synchronous motor and a second permanent magnet synchronous motor, and the output ends of the first permanent magnet synchronous motor and the second permanent magnet synchronous motor penetrate through the interior of the reduction gearbox; the transmission assembly comprises a planetary speed reducing mechanism and a first input shaft arranged on the output end of the first permanent magnet synchronous motor, and a second input shaft is arranged on the output end of the planetary speed reducing mechanism; through the utility model discloses a design, it is simpler to compare current bi-motor technical scheme, under the dual index that satisfies complete machine dynamic nature and economic nature, total part number still less, and the cost is lower, and mechanical structure is simpler, pairs the reduction of gear number, has improved the transmission efficiency of system.
Description
Technical Field
The utility model belongs to the technical field of the electric drive, concretely relates to take bi-motor of planetary reduction mechanism to directly drive reducing gear box.
Background
At present, pure electric vehicles, particularly engineering vehicles, develop reduction gearboxes which are matched with a double-motor driving system more simply to meet the requirements of the power economy of the whole vehicle and meet the requirements of complex working conditions, but the space of a chassis is limited, the arrangement of double motors and the scheme of the reduction gearboxes are too complex at present, the cost is high, the manufacturability is complex, and the reliability is unstable.
Publication number CN109455075A proposes a reduction gearbox with a one-way clutch for double motors, which increases the complexity of the system, increases the cost, increases the control difficulty, and relatively reduces the reliability;
the publication number CN106949203A provides a planetary reduction gearbox with a one-way clutch and double motors, which makes the assembly and manufacturing process more complicated and the cost higher, and the failure rate of the planetary reduction gearbox is higher than that of a fixed shaft type gearbox;
the publication number CN207360088U provides a dead axle box with a synchronizer for a dual-motor, the arrangement of the different sides of the dual-motor is not beneficial to the utilization of the chassis space, and the gear box shifts gears for a two-gear three-shaft synchronizer, the number of parts is significantly increased and is complex, and the defects of impact or pause in the gear shifting process can be caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take planet reduction gears's two motors to directly drive reducing gear box to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a double-motor direct-drive reduction gearbox with a planetary reduction mechanism comprises a reduction gearbox, wherein a power assembly is arranged outside the reduction gearbox, and a transmission assembly is arranged inside the reduction gearbox;
the power assembly comprises a first permanent magnet synchronous motor and a second permanent magnet synchronous motor, and the output ends of the first permanent magnet synchronous motor and the second permanent magnet synchronous motor penetrate through the interior of the reduction gearbox;
the transmission assembly comprises a planetary reduction mechanism and a first input shaft arranged on the output end of the first permanent magnet synchronous motor, a second input shaft is arranged on the output end of the planetary reduction mechanism, a first input gear and a second input gear are fixedly sleeved outside the first input shaft and the second input shaft respectively, the input end of the planetary reduction mechanism is in transmission connection with the output end of the second permanent magnet synchronous motor, an output gear is arranged in the interval between the first input gear and the second input gear, and is in meshing transmission with the first input gear and the second input gear, and an output shaft is further arranged inside the output gear.
Preferably, the first permanent magnet synchronous motor and the second permanent magnet synchronous motor are arranged at two ends of the same side or two ends of different sides of the reduction box.
Preferably, a bearing is sleeved at the joint position of the output shaft and the reduction gearbox.
Preferably, the end parts of the first input shaft and the second input shaft are embedded into the reduction gearbox, and bearings are further sleeved at the end parts of the first input shaft and the second input shaft.
Preferably, the reduction gearbox is composed of an upper shell and a lower shell, the opposite end faces of the two shells are fixedly provided with flange connecting ends, the edge of each flange connecting end is provided with a through hole, an internal thread cylinder is inserted into the through hole and consists of circular rings and cylinders with different outer diameters, the outer diameters of the circular rings are larger than the outer diameter of the cylinders, and connecting bolts are screwed into the two internal thread cylinders.
Preferably, the bottom of the flange connecting end is provided with a ring groove, a magnetic ring is embedded in the ring groove, glue which is bonded with the ring groove is coated on the top of the magnetic ring, the two internal thread cylinders are symmetrically arranged, and the ring of the internal thread cylinder at the bottom is magnetically connected with the magnetic ring.
Preferably, the circle centers of the connecting bolt, the ring groove, the magnetic ring and the internal thread cylinder are located on the same vertical line, a limiting end is formed at the top of the connecting bolt, and the diameter of the limiting end is larger than the inner diameter of the internal thread cylinder.
Compared with the prior art, the beneficial effects of the utility model are that:
1. through the design of the utility model, compared with the existing double-motor technical scheme, the double-motor system has the advantages of less total number, lower cost, simpler mechanical structure, and fewer paired gears, and simpler mechanical structure, and the number of the paired gears is reduced, and the transmission efficiency of the system is improved; the reduction gearbox has simple structure, so that the overall size is further reduced, the arrangement is flexible, the space of the chassis is saved, and the arrangement of other parts of the whole machine is easier; the gear shifting operation mechanism is not arranged, gear shifting action is not needed, and pause and impact feeling in the whole machine operation process is greatly reduced, so that the operation is safer, and the driving is more comfortable; the planetary reduction is connected with the first-stage straight gear reduction in series, so that the requirement of large torque output is easy to realize, the requirement of the motor is reduced, and the cost of the motor is reduced; the double motors are configured, and the power is coupled and output, so that the power is abundant when the whole machine works, and the stepless speed change from zero vehicle speed to the highest vehicle speed enables the operation to be more convenient and faster, effectively improves the operation efficiency and brings economic benefits;
2. through the internal thread section of thick bamboo of design, can replace current nut to accomplish in connecting bolt's fixed, simultaneously because an internal thread section of thick bamboo is the detachable structure, even the condition of smooth silk or mashed tooth appears in the later stage, also convenient maintenance is changed, holistic flexibility is higher.
Drawings
Fig. 1 is a schematic view of the installation of a first permanent magnet synchronous motor and a second permanent magnet synchronous motor in the same side state of the present invention;
fig. 2 is a schematic view illustrating the installation of the first permanent magnet synchronous motor and the second permanent magnet synchronous motor in a different side state according to the present invention;
fig. 3 is a schematic transmission diagram illustrating the operation of the second permanent magnet synchronous motor of fig. 1 according to the present invention;
fig. 4 is a schematic transmission diagram illustrating the operation of the first permanent magnet synchronous motor and the second permanent magnet synchronous motor in fig. 1 according to the present invention;
FIG. 5 is a schematic view of the installation of the reduction box of the present invention;
fig. 6 is an enlarged schematic view of the area a in fig. 5 according to the present invention.
In the figure: 1. a first permanent magnet synchronous motor; 2. a reduction gearbox; 3. a first input shaft; 4. a first input gear; 5. an output shaft; 6. an output gear; 7. a second input shaft; 8. a second input gear; 9. a second permanent magnet synchronous motor; 10. a planetary reduction mechanism; 11. a flange connection end; 12. a connecting bolt; 13. a through hole; 14. a ring groove; 15. a magnetic ring; 16. an internally threaded barrel.
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 work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, fig. 3, fig. 4, fig. 5 and fig. 6, the present invention provides a technical solution: a double-motor direct-drive reduction gearbox with a planetary reduction mechanism comprises a reduction gearbox 2, wherein a power assembly is arranged outside the reduction gearbox 2, and a transmission assembly is arranged inside the reduction gearbox 2;
the power assembly comprises a first permanent magnet synchronous motor 1 and a second permanent magnet synchronous motor 9, and the output ends of the first permanent magnet synchronous motor 1 and the second permanent magnet synchronous motor 9 penetrate through the interior of the reduction gearbox 2;
the transmission assembly comprises a planetary speed reducing mechanism 10 and a first input shaft 3 arranged on the output end of the first permanent magnet synchronous motor 1, a second input shaft 7 is arranged on the output end of the planetary speed reducing mechanism 10, a first input gear 4 and a second input gear 8 are fixedly sleeved outside the first input shaft 3 and the second input shaft 7 respectively, and the input end of the planetary speed reducing mechanism 10 is in transmission connection with the output end of the second permanent magnet synchronous motor 9; the reduction gearbox 2 has simple structure, brings visual feeling that the whole size is further reduced, the arrangement is flexible, the space of the chassis is saved, and the arrangement of other parts of the whole machine is easier; the gear shifting operation mechanism is not arranged, gear shifting action is not needed, and pause and impact feeling in the whole machine operation process is greatly reduced, so that the operation is safer, and the driving is more comfortable; the planetary reduction mechanism 10 is in speed reduction series connection with the second input gear 8, so that the requirement of large torque output is easy to realize, the requirement of the motor is reduced, and the cost of the motor is reduced; the double-motor configuration and the power coupling output enable the whole machine to have abundant power when working, and the stepless speed change from zero vehicle speed to the highest vehicle speed enables the operation to be more convenient and faster, effectively improves the working efficiency and brings economic benefits, an output gear 6 is arranged in the space between the first input gear 4 and the second input gear 8, the output gear 6 is in meshing transmission with the first input gear 4 and the second input gear 8, and an output shaft 5 is further arranged inside the output gear 6.
In this embodiment, preferably, the first permanent magnet synchronous motor 1 and the second permanent magnet synchronous motor 9 are disposed at two ends of the reduction gearbox 2 at the same side.
In this embodiment, preferably, a bearing is sleeved at a joint of the output shaft 5 and the reduction gearbox 2 for supporting and rotating.
In this embodiment, preferably, the end portions of the first input shaft 3 and the second input shaft 7 are embedded into the reduction gearbox 2 for supporting rotation, and the end portions of the first input shaft 3 and the second input shaft 7 are further sleeved with bearings.
In this embodiment, it is preferred, reducing gear box 2 comprises upper and lower shell, and the opposition terminal surface of two shells is fixed with flange joint end 11, through-hole 13 has been seted up to flange joint end 11's edge, internal thread section of thick bamboo 16 has been inserted in the inside of through-hole 13, the internal thread section of thick bamboo 16 of design, can replace current nut to accomplish in connecting bolt's fixed, simultaneously because internal thread section of thick bamboo 16 is the detachable structure, even the condition of smooth silk or mashed tooth appears in the later stage, also conveniently maintain the change, holistic flexibility is higher, internal thread section of thick bamboo 16 comprises ring and the cylinder that the external diameter is inequality, wherein the external diameter of ring with be greater than cylindrical external diameter, it has connecting bolt 12 to go back the screw in two internal thread section of thick bamboos 16 inside.
In this embodiment, preferably, the bottom end surface of the bottom flange connection end 11 is provided with a ring groove 14, a magnetic ring 15 is embedded in the ring groove 14, and is used for magnetically attracting and connecting the internal thread cylinder 16 at the bottom position, so as to facilitate the installation and connection in the previous period, the top of the magnetic ring 15 is coated with glue which is bonded and connected with the ring groove 14, the two internal thread cylinders 16 are symmetrically arranged, and the ring of the internal thread cylinder 16 at the bottom position is magnetically connected with the magnetic ring 15.
In this embodiment, preferably, the centers of the connecting bolt 12, the ring groove 14, the magnetic ring 15 and the internal thread cylinder 16 are located on the same vertical line to realize connection, and a limiting end is formed at the top of the connecting bolt 12, and the diameter of the limiting end is larger than the inner diameter of the internal thread cylinder 16.
Example 2
Referring to fig. 2, in the present embodiment, preferably, the first permanent magnet synchronous motor 1 and the second permanent magnet synchronous motor 9 are disposed at two ends of the opposite side of the reduction box 2.
The utility model discloses a theory of operation and use flow: referring to fig. 1 and fig. 2, a first permanent magnet synchronous motor 1 and a second permanent magnet synchronous motor 9 are arranged in parallel on the same side or different sides of a reduction gearbox 2, the on-off of the internal current of the first permanent magnet synchronous motor 1 and the internal current of the second permanent magnet synchronous motor 9 are controlled by a controller, so that the first permanent magnet synchronous motor 1 and the second permanent magnet synchronous motor 9 are started and stopped, and the requirements of the current complete machine on low-speed heavy-load power performance and high-speed no-load transfer working condition are met through different selections of the first permanent magnet synchronous motor 1 and the second permanent magnet synchronous motor 9; the structure of the reduction box 2 is simplified, the first input gear 4, the second input gear 8 and the output gear 6 are in a normally meshed structure, complex structures such as a clutch and a gear shifting sliding sleeve are omitted, the axial size is obviously reduced, and the maintenance difficulty is greatly reduced; the speed ratio of the planetary reduction is 1-5, the speed ratio range of the first input gear 4 and the output gear 6 is 2-5, and the speed ratio range of the second input gear 8 and the output gear 6 is 1.5-5; the power coupling and the speed coupling are realized by detecting in real time through a controller detection system and adjusting the rotating speed of the first permanent magnet synchronous motor 1 and the rotating speed of the second permanent magnet synchronous motor 9 in time;
fig. 3 is a schematic diagram of a low-speed light-load or no-load high-speed transition state: the second permanent magnet synchronous motor 9 is enabled to operate under the control of the controller, the first permanent magnet synchronous motor 1 stops operating, power is transmitted to the planetary reduction mechanism 10 through the second permanent magnet synchronous motor 9, is transmitted to the second input gear 8 through the second input shaft 7 after the first-stage speed reduction torque giving, and is transmitted to the front axle and the rear axle through the output shaft 5 after the second-stage speed reduction torque giving of the second input gear 8 and the output gear 6 through the constant mesh gear, so that the action of the power output whole machine is realized;
FIG. 4 is a schematic representation of a low speed high torque condition: when the rotating speed of the external motor is reduced and the current is increased, the system judges that the external load is increased, so that the second permanent magnet synchronous motor 9 is automatically started, one path of power is transmitted from the first permanent magnet synchronous motor 1 to the first input shaft 3, the first input shaft 3 is transmitted to the first input gear 4, and the first input gear 4 is transmitted to the output gear 6; the other path of power is transmitted to a planetary reduction mechanism 10 through a second permanent magnet synchronous motor 9, is transmitted to a second input shaft 7 after being subjected to speed reduction and torque donation through the planetary reduction mechanism 10, is transmitted to a second input gear 8 through the second input shaft 7, is transmitted to an output gear 6 through the second input gear 8, and is transmitted to an output shaft 5 after being coupled at the output gear 6, so that the output of the power is realized;
referring to fig. 5 and 6, in the installation of the reduction gearbox 2, the internally threaded cylinder 16 is inserted into the through hole 13, and the internally threaded cylinder 16 at the bottom position is installed, the magnetic ring 15 should be adhered to the inside of the ring groove 14 through glue, so that the internally threaded cylinder 16 at the bottom can not fall off when being placed, then the connecting bolt 12 penetrates through the two internally threaded cylinders 16 for fixing, and when the internally threaded cylinder 16 or the connecting bolt 12 has thread slipping or tooth decay, the damaged structure can be conveniently replaced at a later stage.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a take bi-motor direct drive reducing gear box of planet reduction gears, includes reducing gear box (2), its characterized in that: the power component is arranged outside the reduction gearbox (2), and the transmission component is arranged inside the reduction gearbox (2);
the power assembly comprises a first permanent magnet synchronous motor (1) and a second permanent magnet synchronous motor (9), and the output ends of the first permanent magnet synchronous motor (1) and the second permanent magnet synchronous motor (9) penetrate through the interior of the reduction gearbox (2);
the transmission assembly comprises a planetary speed reducing mechanism (10) and a first input shaft (3) arranged on the output end of the first permanent magnet synchronous motor (1), a second input shaft (7) is arranged on the output end of the planetary speed reducing mechanism (10), a first input gear (4) and a second input gear (8) are respectively fixedly sleeved outside the first input shaft (3) and the second input shaft (7), the input end of the planetary speed reducing mechanism (10) is in transmission connection with the output end of the second permanent magnet synchronous motor (9), an output gear (6) is arranged in the space between the first input gear (4) and the second input gear (8), the output gear (6) is in meshed transmission with the first input gear (4) and the second input gear (8), an output shaft (5) is also mounted inside the output gear (6).
2. The double-motor direct-drive reduction gearbox with the planetary reduction mechanism as claimed in claim 1, is characterized in that: the first permanent magnet synchronous motor (1) and the second permanent magnet synchronous motor (9) are arranged at two ends of the same side or two ends of different sides of the reduction gearbox (2).
3. The double-motor direct-drive reduction gearbox with the planetary reduction mechanism as claimed in claim 1, is characterized in that: and a bearing is sleeved at the joint position of the output shaft (5) and the reduction gearbox (2).
4. The double-motor direct-drive reduction gearbox with the planetary reduction mechanism as claimed in claim 1, is characterized in that: the end parts of the first input shaft (3) and the second input shaft (7) are embedded into the reduction gearbox (2), and bearings are further sleeved at the end parts of the first input shaft (3) and the second input shaft (7).
5. The double-motor direct-drive reduction gearbox with the planetary reduction mechanism as claimed in claim 1, is characterized in that: the reduction gearbox (2) is composed of an upper shell and a lower shell, a flange connecting end (11) is fixed on opposite end faces of the two shells, a through hole (13) is formed in the edge of the flange connecting end (11), an internal thread cylinder (16) is inserted into the through hole (13), the internal thread cylinder (16) is composed of a circular ring and a cylinder, the outer diameter of the circular ring is larger than that of the cylinder, and a connecting bolt (12) is screwed into the internal thread cylinder (16).
6. The double-motor direct-drive reduction gearbox with the planetary reduction mechanism as set forth in claim 5, wherein: be in the bottom seted up annular (14) on the bottom face of flange joint end (11), the inside embedding of annular (14) has magnetic ring (15), the top of magnetic ring (15) scribbles the glue of being connected with annular (14) bonding, and two internal thread section of thick bamboo (16) symmetry set up, and the ring that is in internal thread section of thick bamboo (16) in the bottom position is connected with magnetic ring (15) magnetism.
7. The double-motor direct-drive reduction gearbox with the planetary reduction mechanism as claimed in claim 5, wherein: the circle centers of the connecting bolt (12), the ring groove (14), the magnetic ring (15) and the internal thread cylinder (16) are located on the same vertical line, a limiting end is formed at the top of the connecting bolt (12), and the diameter of the limiting end is larger than the inner diameter of the internal thread cylinder (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220717531.2U CN217422052U (en) | 2022-03-30 | 2022-03-30 | Double-motor direct-drive reduction gearbox with planetary reduction mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220717531.2U CN217422052U (en) | 2022-03-30 | 2022-03-30 | Double-motor direct-drive reduction gearbox with planetary reduction mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217422052U true CN217422052U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220717531.2U Active CN217422052U (en) | 2022-03-30 | 2022-03-30 | Double-motor direct-drive reduction gearbox with planetary reduction mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217422052U (en) |
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- 2022-03-30 CN CN202220717531.2U patent/CN217422052U/en active Active
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