CN115158524B - Moment power-assisted electric vehicle driving device - Google Patents
Moment power-assisted electric vehicle driving device Download PDFInfo
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- CN115158524B CN115158524B CN202210634736.9A CN202210634736A CN115158524B CN 115158524 B CN115158524 B CN 115158524B CN 202210634736 A CN202210634736 A CN 202210634736A CN 115158524 B CN115158524 B CN 115158524B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 3
- 238000002788 crimping Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a torque power-assisted electric vehicle driving device which comprises a casing rotationally connected to a rear shaft of an electric vehicle, wherein a power-assisted motor arranged on the rear shaft is arranged on the left side of the inside of the casing, a driven chain disc is rotationally arranged on the right side of the rear shaft, an axial extrusion force transmission mechanism is arranged between the left side of the driven chain disc and the right side of the casing, an outer circle of the casing is in transmission connection with the inner circle of a rear wheel rim of the electric vehicle through a spline structure, an axial elastic positioning component is arranged between the outer circle of the casing and the left side surface and the right side surface of the rear wheel rim, a mounting groove is formed in the center of the left side of the casing in a right concave manner, and a pressure sensing dynamic monitoring module arranged on the rear shaft is arranged in the mounting groove. According to the invention, the external force applied to the pedal by a rider is directly and accurately converted into the pressure signal monitored by the pressure sensor in real time, so that the power assisting degree can be quickly and accurately adjusted when different riding external forces are applied, and the power assisting device can be applied to various application occasions of electric bicycles and is not influenced by road conditions.
Description
Technical Field
The invention belongs to the technical field of electric power-assisted vehicles, and particularly relates to a torque power-assisted electric vehicle driving device.
Background
The torque power-assisted electric vehicle is a power-assisted electric vehicle which automatically adjusts the output torque of a motor according to the applied torque of the electric vehicle by a rider, and currently, signals acquired by a torque sensor, a pressure sensor and the like are mostly adopted as input signals. The power-assisted electric vehicle is different from a common electric vehicle in that the common electric vehicle adopts a handle potentiometer as a motor input control signal, and the power-assisted electric vehicle automatically judges output moment according to moment generated by pedaling a pedal by a person.
Currently, electric power-assisted bicycles on the market generally monitor the riding speed by adopting a torque sensor and are assisted by an intelligent control system, wherein the riding speed is higher than a certain limit value, no power assistance is provided, and the riding speed is lower than the certain limit value, so that the need of power assistance is determined. The power assisting of the electric bicycle is that the electric bicycle automatically adjusts the output torque of the motor according to the applied torque of the electric bicycle by a rider, and signals acquired by a torque sensor, a pressure sensor and the like are adopted as input signals at present. The power-assisted electric vehicle is different from a common electric vehicle in that the common electric vehicle adopts a handle potentiometer as a motor input control signal, and the power-assisted electric vehicle automatically judges output moment according to moment generated by pedaling a pedal by a person. The power-assisted control mode has the defects of complex structure, high cost, stability and strength influence on analog signal transmission acquired by the torque sensor and the like.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a torque power-assisted electric vehicle driving device with low cost, strong signal transmission stability and high reliability.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a moment helping hand electric motor car drive arrangement, including rotating the epaxial casing in electric motor car rear, the casing is cylindric wholly, the central line of casing and the coincidence of the central line of rear axle, the inside left side of casing is equipped with installs at epaxial helping hand motor in rear, driven chain dish on casing right side is installed through first bearing in the rear axle right side, be equipped with axial extrusion force transmission mechanism between driven chain dish left side and the casing right side, the casing excircle passes through spline structure transmission with the rear wheel rim interior circle of electric motor car and is connected, be equipped with axial elasticity locating component between casing excircle and the rear wheel rim left and right sides face, casing left side center department is concave to form the mounting groove to the right, be equipped with the pressure sensing dynamic monitoring module of installing on the rear axle in the mounting groove, pressure sensing dynamic monitoring module passes through the signal line with the controller of electric motor car and is connected, the controller passes through the control cable and helping hand motor.
The casing includes the open casing in right side, and the casing left side is connected with the rear axle rotation through the second bearing, and the second bearing is located the mounting groove, and the casing left side is equipped with the end cover that seals the mounting groove, and the apron passes through three connecting bolt assemblies of circumference array and is connected with the ring flange of casing right-hand member integral structure, and the apron is interior round and is connected with the rear axle rotation through the third bearing, and the cover is equipped with the spacer that is located between first bearing and the third bearing on the rear axle.
The axial extrusion force transmission mechanism comprises a first arc-shaped wedge block and a second arc-shaped wedge block, wherein at least three first arc-shaped wedge blocks and second arc-shaped wedge blocks are arranged, the first arc-shaped wedge blocks are uniformly and fixedly arranged on the right side surface of the cover plate along the circumferential direction of the rear shaft, the second arc-shaped wedge blocks are uniformly and fixedly arranged on the left side surface of the driven chain disc along the circumferential direction of the rear shaft, and the wedge surfaces of the first arc-shaped wedge blocks and the second arc-shaped wedge blocks are in one-to-one correspondence left and right and are in press fit with each other;
a plurality of arc-shaped limiting grooves are formed in the right side face of the cover plate along the circumferential direction, limiting pins which are the same in number with the arc-shaped limiting grooves and correspond to the arc-shaped limiting grooves one by one are formed in the left side face of the driven chain plate along the circumferential direction, and each limiting pin correspondingly stretches into one arc-shaped limiting groove.
The pressure sensing dynamic monitoring module comprises a positioning snap ring, a disc spring, a pressure sensor and a thrust bearing which are sequentially arranged from left to right, wherein the positioning snap ring is arranged on the outer circle of the rear shaft and positioned on the right side of the second bearing, the left end of the disc spring is in crimping fit with the positioning snap ring, the right end of the disc spring is in crimping fit with the pressure sensor, and the pressure sensor is in crimping fit with the right side bottom of the mounting groove through the thrust bearing.
The axial elastic positioning assembly comprises a fixed ring, a spring and a guide screw, wherein the fixed ring is coaxially arranged on the left side of the outer circle of the shell, the fixed ring is connected with the shell through a radially arranged screw, three threaded holes are formed in the cover plate and the flange plate along the circumferential direction, guide holes corresponding to the threaded holes are formed in the right side surface of the rear wheel rim, the guide screw penetrates through the guide holes from right to left and is in threaded connection with the threaded holes, the left end of the guide screw extends into the guide holes, the spring is arranged on the guide screw, the left end and the right end of the spring are respectively in compression joint with the right side surface of the rear wheel rim and the flange plate, and the left side surface of the rear wheel rim is in compression joint with the right side of the fixed ring under the action of the spring.
The booster motor comprises rotor magnetic steel and a stator which are in clearance fit, the stator is fixedly arranged on the rear shaft, and the rotor magnetic steel is fixedly arranged in the inner circle of the shell.
The first bearing outer circle is in clearance fit with the driven chain disk inner circle, the second bearing outer circle is in clearance fit with the shell left inner circle, and the third bearing outer circle is in clearance fit with the cover plate inner circle.
By adopting the technical scheme, the working principle of the invention is as follows: the pedal driving middle shaft and the driving chain disc which are arranged at two ends of the rear shaft are respectively stepped on by two feet of a rider, the driving chain disc drives the driven chain disc to rotate through a chain, the second arc wedge block at the left side of the driven chain disc extrudes the first arc wedge block at the right side of the cover plate, the extrusion force F is vertical to the wedge surface, the F is decomposed into a radial component force F1 and an axial component force F2, the cover plate is driven to rotate by the radial component force F1, the cover plate drives the shell to rotate through the connecting bolt component and the guide screw, and the rear wheel rim which is in transmission connection with the outer circle of the shell through a spline structure rotates, so that the power transmission process for driving the rear wheel to rotate is realized.
Meanwhile, the axial component force F2 of the extrusion force F pushes the cover plate and the shell to move left along the rear axial direction (the movement distance is small), the pressure sensor senses that the shell applies left axial pressure to the thrust bearing, the pressure sensor transmits collected pressure signals to the controller of the electric vehicle, the controller sends a power-assisted starting signal to the power-assisted motor according to the received pressure signals, the battery of the electric vehicle supplies power to the power-assisted motor and provides current matched with the pressure signals collected by the pressure sensor, and the torque of the rotor magnetic steel is increased to assist the rear shaft. When the extrusion force F is reduced, under the action of the disc spring, the thrust bearing and the slip ring move leftwards along the outer circle of the rear shaft, the pressure signal monitored by the pressure sensor is smaller than the minimum value for sending a power-assisting signal to the controller, and the power-assisting motor does not provide power assistance.
When the wedge surfaces of the second arc wedge block and the first arc wedge block are mutually extruded to relatively rotate, the limiting pin moves in the arc limiting groove, and when the limiting pin is in compression joint with one end of the arc limiting groove, the shell moves leftwards to the limit, namely, the pressure signal acquired by the pressure sensor reaches the maximum value, and the power assisting of the power assisting motor reaches the set maximum value. The cooperation of spacer pin and arc spacing groove prevents that the wedge face of second arc voussoir and first arc voussoir from breaking away from each other to guarantee the reliability of gathering pressure signal.
According to the invention, when a rider applies external force to the pedal, so that the wedge surfaces of the second arc wedge block and the first arc wedge block are mutually extruded, the pressure sensor acquires the axial component force F2 signal of the extrusion force F of the wedge surfaces in real time and transmits the axial component force F2 signal to the controller, so that the real-time adjustment of the output torque of the power-assisted motor is achieved. Simply speaking, the larger the external force of the pedal is, the larger the power assisting is, so that a rider can maintain stable riding force.
The left side of the outer circle of the shell is provided with a fixed ring, the right side is provided with a guide screw and a spring, and the guide screw and the spring play a role in resetting the axial movement of the shell together with the pressure spring. The positioning snap ring is used for positioning the left end of the disc spring.
The first bearing outer circle is in clearance fit with the driven chain disk inner circle, the second bearing outer circle is in clearance fit with the shell left inner circle, and the third bearing outer circle is in clearance fit with the cover plate inner circle. These clearance fit arrangements ensure flexibility in axial movement of the housing. Of course, the movement of the shell is tiny, which can be 1-3mm, and the pressure sensor senses the change of the axial pressure.
In conclusion, the invention has scientific principle, small volume, compact structure and convenient installation, and can directly and accurately convert the external force applied to the pedal by a rider into the pressure signal monitored by the pressure sensor in real time, so that the power assisting magnitude can be quickly and accurately adjusted when different riding external forces are applied, and the invention can be applied to various application occasions of electric bicycles without being influenced by road conditions.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a left side view of the driven sprocket of FIG. 1;
FIG. 3 is a right side view of the cover plate of FIG. 1;
FIG. 4 is a right side elevational view of the rear wheel rim of FIG. 1;
FIG. 5 is a left side view of the housing with the retaining ring removed;
fig. 6 is an exploded view of the pressing force of the second arcuate wedge and the first arcuate wedge in the present invention when pressed against each other.
Detailed Description
As shown in fig. 1-6, the torque power-assisted electric vehicle driving device comprises a casing rotationally connected to a rear axle 1 of the electric vehicle, the whole casing is cylindrical, the center line of the casing coincides with the center line of the rear axle 1, a power-assisted motor mounted on the rear axle 1 is arranged on the left side of the inside of the casing, a driven chain disk 3 positioned on the right side of the casing is mounted on the right side of the rear axle 1 through a first bearing 2, an axial extrusion force transmission mechanism is arranged between the left side of the driven chain disk 3 and the right side of the casing, an outer circle of the casing is connected with the inner circle of a rear wheel rim 4 of the electric vehicle through transmission, an axial elastic positioning component is arranged between the outer circle of the casing and the left side and the right side of the rear wheel rim 4, a mounting groove 5 is formed by recessing right in the center of the left side of the casing, a pressure sensing dynamic monitoring module mounted on the rear axle 1 is arranged in the mounting groove 5, the pressure sensing dynamic monitoring module is connected with a controller (not shown) of the electric vehicle through a signal wire, and the controller is connected with the power-assisted motor through a control cable.
The casing includes the open casing 6 in right side, the apron 7 in casing 6 right side, casing 6 left side is rotated with rear axle 1 through second bearing 8 and is connected, second bearing 8 is located mounting groove 5, casing 6 left side is equipped with the end cover 9 that seals mounting groove 5, apron 7 is connected with the ring flange 16 of casing 6 right-hand member integral structure through three connecting bolt assemblies 10 of circumference array, apron 7 interior circle is rotated with rear axle 1 through third bearing 17 and is connected, the cover is equipped with spacer 13 that is located between first bearing 2 and the third bearing 17 on the rear axle 1. The spline structure comprises a key groove 14 on the inner circle of the rear wheel rim 4 and a key block 15 on the outer circle of the shell 6.
The axial extrusion force transmission mechanism comprises a first arc-shaped wedge block 11 and a second arc-shaped wedge block 12, wherein at least three first arc-shaped wedge blocks 11 and second arc-shaped wedge blocks 12 are arranged, the first arc-shaped wedge blocks 11 are uniformly and fixedly arranged on the right side surface of the cover plate 7 along the circumferential direction of the rear shaft 1, the second arc-shaped wedge blocks 12 are uniformly and fixedly arranged on the left side surface of the driven chain disk 3 along the circumferential direction of the rear shaft 1, and the wedge surfaces of the first arc-shaped wedge blocks 11 and the second arc-shaped wedge blocks 12 are in one-to-one correspondence left and right and are in mutual press fit;
a plurality of arc-shaped limiting grooves 18 are formed in the right side face of the cover plate 7 along the circumferential direction, limiting pins 19 which are the same as the arc-shaped limiting grooves 18 in number and correspond to each other one by one are formed in the left side face of the driven chain plate 3 along the circumferential direction, and each limiting pin 19 correspondingly stretches into one arc-shaped limiting groove 18.
The pressure sensing dynamic monitoring module comprises a positioning snap ring 20, a disc spring 21, a pressure sensor 22 and a thrust bearing 23 which are sequentially arranged from left to right, wherein the positioning snap ring 20 is arranged on the outer circle of the rear shaft 1 and positioned on the right side of the second bearing 8, the left end of the disc spring 21 is in pressure connection with the positioning snap ring 20, the right end of the disc spring 21 is in pressure connection with the pressure sensor 22, and the pressure sensor 22 is in pressure connection with the right side bottom of the mounting groove 5 through the thrust bearing 23.
The axial elastic positioning assembly comprises a fixed ring 24, a spring 25 and a guide screw 26, wherein the fixed ring 24 is coaxially arranged on the left side of the outer circle of the shell 6, the fixed ring 24 is connected with the shell 6 through radially arranged screws 27, three threaded holes 28 are formed in the cover plate 7 and the flange 16 along the circumferential direction, a guide hole 29 corresponding to the threaded holes 28 is formed in the right side surface of the rear wheel rim 4, the guide screw 26 penetrates through the guide hole from right to left and is in threaded connection with the threaded holes 28, the left end of the guide screw 26 extends into the guide hole 29, the spring 25 is arranged on the guide screw 26, the left end and the right end of the spring 25 are respectively in pressure connection with the right side surface of the rear wheel rim 4 and the flange 16, and the left side surface of the rear wheel rim 4 is in pressure connection with the right side of the fixed ring 24 under the action of the spring 25.
The booster motor comprises rotor magnetic steel 30 and a stator 31 which are in clearance fit, the stator 31 is fixedly arranged on the rear shaft 1, and the rotor magnetic steel 30 is fixedly arranged in the inner circle of the shell 6.
The outer circle of the first bearing 2 is in clearance fit with the inner circle of the driven chain wheel 3, the outer circle of the second bearing 8 is in clearance fit with the inner circle of the left side of the shell 6, and the outer circle of the third bearing 17 is in clearance fit with the inner circle of the cover plate 7.
The working principle of the invention is as follows: the pedal driving middle shaft and the driving chain wheel are respectively arranged at the two ends of the rear axle 1, the driving chain wheel drives the driven chain wheel 3 to rotate through a chain, the second arc wedge block 12 at the left side of the driven chain wheel 3 extrudes the first arc wedge block 11 at the right side of the cover plate 7, the extrusion force F is vertical to the wedge surface, the F is decomposed into a radial component force F1 and an axial component force F2, the cover plate 7 is driven to rotate by the radial component force F1, the cover plate 7 drives the shell 6 to rotate through the connecting bolt assembly 10 and the guide screw 26, and the rear wheel rim 4 which is in transmission connection with the outer circle of the shell 6 through a spline structure rotates, so that the power transmission process for driving the rear wheel to rotate is realized.
Meanwhile, the cover plate 7 and the shell 6 are pushed by the axial component force F2 of the extrusion force F to move leftwards along the rear axle 1 (the movement distance is small), the shell 6 applies leftwards axial pressure to the thrust bearing 23 by the pressure sensor 22, the pressure sensor 22 transmits collected pressure signals to the controller of the electric vehicle, the controller sends a starting power-assisted signal to the power-assisted motor according to the received pressure signals, the battery of the electric vehicle supplies power to the power-assisted motor and provides current with the matched pressure signals collected by the pressure sensor 22, and the torque of the rotor magnetic steel 30 is increased to assist the rear axle 1. When the extrusion force F is reduced, under the action of the disc spring 21, the thrust bearing 23 and the slip ring move leftwards along the outer circle of the rear shaft 1, the pressure signal monitored by the pressure sensor 22 is smaller than the minimum value for sending a power-assisting signal to the controller, and the power-assisting motor does not provide power assistance.
When the wedge surfaces of the second arc-shaped wedge block 12 and the first arc-shaped wedge block 11 are mutually extruded to relatively rotate, the limiting pin 19 moves in the arc-shaped limiting groove 18, and when the limiting pin 19 is in compression joint with one end of the arc-shaped limiting groove 18, the shell 6 moves leftwards to the limit, namely, the pressure signal acquired by the pressure sensor 22 reaches the maximum value, and the power assisting of the power assisting motor reaches the set maximum value. The cooperation of spacer 19 and arc spacing groove 18 prevents that the wedge surface of second arc voussoir 12 and first arc voussoir 11 from breaking away from each other to guarantee the reliability of gathering pressure signal.
The invention adopts the magnitude of the external force applied to the pedal by a rider so that the wedge surfaces of the second arc wedge block 12 and the first arc wedge block 11 are mutually extruded, and the pressure sensor 22 acquires the magnitude signal of the axial component force F2 of the extrusion force F of the wedge surfaces in real time and transmits the magnitude signal to the controller so as to achieve the real-time adjustment of the output torque of the booster motor. Simply speaking, the larger the external force of the pedal is, the larger the power assisting is, so that a rider can maintain stable riding force.
The left side of the outer circle of the shell 6 is provided with a fixed ring 24, the right side is provided with a guide screw 26 and a spring 25, and the guide screw and the spring together play a role in resetting the axial movement of the shell 6. The positioning snap ring 20 is used to position the left end of the disc spring 21.
The outer circle of the first bearing 2 is in clearance fit with the inner circle of the driven chain wheel 3, the outer circle of the second bearing 8 is in clearance fit with the inner circle of the left side of the shell 6, and the outer circle of the third bearing 17 is in clearance fit with the inner circle of the cover plate 7. These clearance fit arrangements ensure flexibility in axial movement of the housing 6. Of course, the movement of the housing 6 may be 1-3mm, and the pressure sensor 22 may sense the change in the axial pressure.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (4)
1. The utility model provides a moment helping hand electric motor car drive arrangement which characterized in that: the electric bicycle comprises a shell rotationally connected to a rear shaft of the electric bicycle, wherein the whole shell is cylindrical, a central line of the shell coincides with a central line of the rear shaft, a power-assisted motor arranged on the rear shaft is arranged on the left side of the interior of the shell, a driven chain disc positioned on the right side of the shell is arranged on the right side of the rear shaft through a first bearing, an axial extrusion force transmission mechanism is arranged between the left side of the driven chain disc and the right side of the shell, an outer circle of the shell is in transmission connection with the inner circle of a rear wheel rim of the electric bicycle through a spline structure, an axial elastic positioning component is arranged between the outer circle of the shell and the left side surface and the right side surface of the rear wheel rim, a mounting groove is formed in the central position of the left side of the shell in a rightward concave manner, a pressure sensing dynamic monitoring module arranged on the rear shaft is arranged in the mounting groove, the pressure sensing dynamic monitoring module is connected with a controller of the electric bicycle through a signal wire, and the controller is connected with the power-assisted motor through a control cable;
the axial extrusion force transmission mechanism comprises a first arc-shaped wedge block and a second arc-shaped wedge block, wherein at least three first arc-shaped wedge blocks and second arc-shaped wedge blocks are arranged, the first arc-shaped wedge blocks are uniformly and fixedly arranged on the right side surface of the cover plate along the circumferential direction of the rear shaft, the second arc-shaped wedge blocks are uniformly and fixedly arranged on the left side surface of the driven chain disc along the circumferential direction of the rear shaft, and the wedge surfaces of the first arc-shaped wedge blocks and the second arc-shaped wedge blocks are in one-to-one correspondence left and right and are in press fit with each other;
the right side surface of the cover plate is provided with a plurality of arc-shaped limiting grooves along the circumferential direction, the left side surface of the driven chain plate is provided with limiting pins which have the same number as the arc-shaped limiting grooves and are in one-to-one correspondence with the arc-shaped limiting grooves along the circumferential direction, and each limiting pin correspondingly stretches into one arc-shaped limiting groove;
the pressure sensing dynamic monitoring module comprises a positioning clamping ring, a disc spring, a pressure sensor and a thrust bearing which are sequentially arranged from left to right, wherein the positioning clamping ring is arranged on the outer circle of the rear shaft and positioned on the right side of the second bearing, the left end of the disc spring is in pressure welding fit with the positioning clamping ring, the right end of the disc spring is in pressure welding fit with the pressure sensor, and the pressure sensor is in pressure welding fit with the right side bottom of the mounting groove through the thrust bearing;
the axial elastic positioning assembly comprises a fixed ring, a spring and a guide screw, wherein the fixed ring is coaxially arranged on the left side of the outer circle of the shell, the fixed ring is connected with the shell through a radially arranged screw, three threaded holes are formed in the cover plate and the flange plate along the circumferential direction, guide holes corresponding to the threaded holes are formed in the right side surface of the rear wheel rim, the guide screw penetrates through the guide holes from right to left and is in threaded connection with the threaded holes, the left end of the guide screw extends into the guide holes, the spring is arranged on the guide screw, the left end and the right end of the spring are respectively in compression joint with the right side surface of the rear wheel rim and the flange plate, and the left side surface of the rear wheel rim is in compression joint with the right side of the fixed ring under the action of the spring.
2. The torque-assisted electric vehicle driving device according to claim 1, wherein: the casing includes the open casing in right side, and the casing left side is connected with the rear axle rotation through the second bearing, and the second bearing is located the mounting groove, and the casing left side is equipped with the end cover that seals the mounting groove, and the apron passes through three connecting bolt assemblies of circumference array and is connected with the ring flange of casing right-hand member integral structure, and the apron is interior round and is connected with the rear axle rotation through the third bearing, and the cover is equipped with the spacer that is located between first bearing and the third bearing on the rear axle.
3. A torque-assisted electric vehicle drive according to claim 1 or 2, characterized in that: the booster motor comprises rotor magnetic steel and a stator which are in clearance fit, the stator is fixedly arranged on the rear shaft, and the rotor magnetic steel is fixedly arranged in the inner circle of the shell.
4. The torque-assisted electric vehicle driving device according to claim 2, characterized in that: the first bearing outer circle is in clearance fit with the driven chain disk inner circle, the second bearing outer circle is in clearance fit with the shell left inner circle, and the third bearing outer circle is in clearance fit with the cover plate inner circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210634736.9A CN115158524B (en) | 2022-06-07 | 2022-06-07 | Moment power-assisted electric vehicle driving device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210634736.9A CN115158524B (en) | 2022-06-07 | 2022-06-07 | Moment power-assisted electric vehicle driving device |
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| Publication Number | Publication Date |
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| CN115158524A CN115158524A (en) | 2022-10-11 |
| CN115158524B true CN115158524B (en) | 2024-01-05 |
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| CN202210634736.9A Active CN115158524B (en) | 2022-06-07 | 2022-06-07 | Moment power-assisted electric vehicle driving device |
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