CN115158524A - Driving device of torque-assisted electric vehicle - Google Patents
Driving device of torque-assisted electric vehicle Download PDFInfo
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- CN115158524A CN115158524A CN202210634736.9A CN202210634736A CN115158524A CN 115158524 A CN115158524 A CN 115158524A CN 202210634736 A CN202210634736 A CN 202210634736A CN 115158524 A CN115158524 A CN 115158524A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims 1
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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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
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- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a torque-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 in 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, the 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 assembly is arranged between the outer circle of the casing and the left and right side surfaces of the rear wheel rim, a mounting groove is formed in the center of the left side of the casing in a rightward concave manner, and a pressure sensing dynamic monitoring module arranged on the rear shaft is arranged in the mounting groove. The invention can more directly and accurately convert the pressure signals into the pressure signals monitored by the pressure sensor in real time according to the external force exerted on the pedal by a rider, thereby achieving the purpose of quickly and accurately adjusting the boosting force when different external forces for riding are exerted, being applied to various application occasions of the electric bicycle and being not influenced by road conditions.
Description
Technical Field
The invention belongs to the technical field of electric moped, and particularly relates to a driving device of a torque-assisted electric vehicle.
Background
The moment-assisted electric vehicle is a power-assisted electric vehicle which automatically adjusts the output moment of a motor according to the moment applied to the electric vehicle by a rider, and signals collected by a torque sensor, a pressure sensor and the like are mostly adopted as input signals at present. The electric vehicle is different from a common electric vehicle in that the common electric vehicle adopts a rotary potentiometer as a motor input control signal, and the power-assisted electric vehicle automatically judges output torque according to the torque generated by pedaling by people.
At present, the electric power-assisted bicycle on the market generally adopts a torque sensor to monitor the riding speed, an intelligent control system is used for assisting, the riding speed is higher than a certain limit value, power assistance is not provided, and the riding speed is lower than the certain limit value, so that the situation that the power assistance is needed is judged. The power-assisted electric bicycle automatically adjusts the output torque of a motor according to the torque applied to the electric bicycle by a rider, and signals collected by a torque sensor, a pressure sensor and the like are mostly adopted as input signals at present. The electric vehicle is different from a common electric vehicle in that the common electric vehicle adopts a rotary potentiometer as a motor input control signal, and the power-assisted electric vehicle automatically judges output torque according to the torque generated by pedaling by people. The power-assisted control mode has the defects of complex structure, high cost, influence on the transmission of analog signals acquired by the torque sensor due to stability and strength and the like.
Disclosure of Invention
The torque-assisted electric vehicle driving device is low in cost, high in signal transmission stability and high in 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 casing of connection on the electric motor car rear axle, the casing is whole to be cylindricly, the central line of casing and the coincidence of the central line of rear axle, the inside left side of casing is equipped with the helping hand motor of installation on the rear axle, the driven chain dish that is located the 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 the transmission of spline structure with the circle in the rear wheel rim of electric motor car and is connected, be equipped with axial elastic locating component between casing excircle and the rear wheel rim left and right sides, casing left side center department is concave to the right and forms the mounting groove, be equipped with the pressure sensing dynamic monitoring module of installation 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 control cable and is connected with helping hand motor.
The casing includes the open casing in right side, the apron on casing right side, casing left side is passed through the second bearing and is connected with the rear axle rotation, the second bearing is located the mounting groove, the casing left side is equipped with the end cover of closed mounting groove, the apron is connected with the ring flange of casing right-hand member body structure through the three connecting bolt subassembly of circumference array, circle is connected with the rear axle rotation through the third bearing in the apron, 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 which are at least three, the first arc-shaped wedge block is 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 block is uniformly and fixedly arranged on the left side surface of the driven chain disc along the circumferential direction of the rear shaft, and the first arc-shaped wedge block and the second arc-shaped wedge block are in one-to-one correspondence on the left and right sides and are in mutual compression fit;
a plurality of arc spacing grooves are formed in the right side face of the cover plate in the circumferential direction, the spacing pins which are the same in number as the arc spacing grooves and correspond to the arc spacing grooves one to one are formed in the left side face of the driven chain disc in the circumferential direction, and each spacing pin correspondingly extends into one arc spacing 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, the positioning snap ring is arranged on the excircle of the rear shaft and positioned on the right side of the second bearing, the left end of the disc spring is in compression joint with the positioning snap ring, the right end of the disc spring is in compression joint with the pressure sensor, and the pressure sensor is in compression joint with the bottom of the right side of the mounting groove through the thrust bearing.
The axial elastic positioning assembly comprises a fixing ring, a spring and a guide screw rod, the fixing ring is coaxially mounted on the left side of the outer circle of the shell, the fixing ring is connected with the shell through a radially arranged screw, three threaded holes are formed in the cover plate and the flange plate in the circumferential direction, a guide hole corresponding to the threaded hole is formed in the right side face of the rear wheel rim, the guide screw rod penetrates from right to left and is in threaded connection with the threaded hole, the left end of the guide screw rod extends into the guide hole, the spring is mounted on the guide screw rod, the left end and the right end of the spring are respectively in compression joint with the right side face of the rear wheel rim and the flange plate, and under the action of the spring, the left side face of the rear wheel rim is in compression joint with the right side of the fixing ring.
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 excircle of the first bearing is in clearance fit with the inner circle of the driven chain disc, the excircle of the second bearing is in clearance fit with the inner circle on the left side of the shell, and the excircle of the third bearing is in clearance fit with the inner circle of the cover plate.
By adopting the technical scheme, the working principle of the invention is as follows: a rider treads pedals arranged at two ends of a rear shaft respectively by two feet to drive a middle shaft and a driving chain disc to rotate, the driving chain disc drives a driven chain disc to rotate through a chain, a second arc-shaped wedge block on the left side of the driven chain disc extrudes a first arc-shaped wedge block on the right side of a cover plate, an extrusion force F is perpendicular to a wedge surface and is decomposed into a radial component force F1 and an axial component force F2, the radial component force F1 drives the cover plate to rotate, the cover plate drives a shell to rotate through a connecting bolt assembly and a guide screw rod, and a rear wheel rim 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 achieved.
Meanwhile, an axial component force F2 of the extrusion force F pushes the cover plate, the shell moves leftwards along the rear axis (the movement distance is small), the pressure sensor senses that the shell applies leftward axial pressure to the thrust bearing, the pressure sensor transmits the acquired pressure signal to a controller of the electric vehicle, the controller sends a signal for starting power assistance to the power assistance motor according to the received pressure signal, a battery of the electric vehicle supplies power to the power assistance motor and provides current matched with the pressure signal acquired by the pressure sensor, and the torque of rotor magnetic steel is increased to assist the rear shaft. When extrusion force F reduces, under the effect of dish spring, thrust bearing and sliding ring move left along the rear axle excircle, and the pressure signal of pressure sensor monitoring is less than the minimum that sends the helping hand signal to the controller, and the helping hand motor does not provide the helping hand.
When the wedge surfaces of the second arc-shaped wedge block and the first arc-shaped wedge block are mutually extruded to achieve relative rotation, the limiting pin moves in the arc-shaped limiting groove, when the limiting pin is in pressure connection with one end of the arc-shaped limiting groove, the shell moves to the limit leftwards, namely, a pressure signal acquired by the pressure sensor reaches the maximum value, and the assistance force 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 breaks away from each other to guarantee to gather pressure signal's reliability.
The invention adopts the way that the rider applies external force to the pedal to enable the wedge surfaces of the second arc-shaped wedge block and the first arc-shaped wedge block to be mutually extruded, and the pressure sensor 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 regulation of the output torque of the power-assisted motor. The pedal has the advantages that the pedal is pushed by the rider to move, and the pedal is pushed by the rider to move.
A fixing ring is arranged on the left side of the outer circle of the shell, a guide screw and a spring are arranged on the right side of the outer circle of the shell, and the fixing ring and the spring play a role in resetting the shell to move axially together with a pressure spring. The positioning snap ring is used for positioning the position of the left end of the disc spring.
The excircle of the first bearing is in clearance fit with the inner circle of the driven chain disc, the excircle of the second bearing is in clearance fit with the inner circle on the left side of the shell, and the excircle of the third bearing is in clearance fit with the inner circle of the cover plate. These clearance fit configurations ensure flexibility in axial movement of the housing. Of course, the movement of the shell is small and can be 1-3mm, and the pressure sensor only needs to sense the change of the axial pressure.
In conclusion, the invention has scientific principle, small volume, compact structure and convenient installation, and can more directly and accurately convert the external force applied to the pedal by the rider into the pressure signal monitored by the pressure sensor in real time, thereby achieving the purpose of quickly and accurately adjusting the power assistance when different external forces are applied to the electric bicycle, being applied to various application occasions of the electric bicycle and being not influenced by road conditions.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the driven chain wheel 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 forces of the wedge surfaces of the second arc wedge and the first arc wedge when they are pressed against each other in the present invention.
Detailed Description
As shown in fig. 1-6, the torque-assisted electric vehicle driving device of the present invention includes a casing rotatably connected to a rear shaft 1 of an electric vehicle, the casing is cylindrical, a center line of the casing coincides with a center line of the rear shaft 1, a power-assisted motor installed on the rear shaft 1 is disposed on a left side inside the casing, a driven chain disc 3 located on a right side of the casing is installed on a right side of the rear shaft 1 through a first bearing 2, an axial extrusion force transmission mechanism is disposed between a left side of the driven chain disc 3 and a right side of the casing, an outer circle of the casing is connected with an inner circle of a rear wheel rim 4 of the electric vehicle through transmission, an axial elastic positioning assembly is disposed between the outer circle of the casing and a left side and a right side of the rear wheel rim 4, a mounting groove 5 is formed at a center of the left side of the casing by being recessed to the right, a pressure sensing dynamic monitoring module installed on the rear shaft 1 is disposed in the mounting groove 5, the pressure sensing dynamic monitoring module is connected with a controller (not shown in the drawings) of the electric vehicle through a signal line, and the controller is connected with the power-assisted motor through a control cable.
The casing includes the open casing in right side 6, the apron 7 on casing 6 right side, casing 6 left side is rotated through second bearing 8 and rear shaft 1 and is connected, second bearing 8 is located mounting groove 5, 6 left sides of casing are equipped with the end cover 9 that seals mounting groove 5, apron 7 is connected with the ring flange 16 of 6 right-hand members body structures of casing through the three connecting bolt subassembly 10 of circumference array, circle is connected through third bearing 17 and rear shaft 1 rotation in the apron 7, the cover is equipped with the spacer 13 that is located between first bearing 2 and the third bearing 17 on the rear shaft 1. The spline structure includes a key slot 14 on the inner circle of the rear wheel rim 4 and a key block 15 on the outer circle of the housing 6.
The axial extrusion force transmission mechanism comprises a first arc-shaped wedge block 11 and a second arc-shaped wedge block 12 which are at least three, the first arc-shaped wedge block 11 is 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 block 12 is uniformly and fixedly arranged on the left side surface of the driven chain plate 3 along the circumferential direction of the rear shaft 1, and the wedge surfaces of the first arc-shaped wedge block 11 and the second arc-shaped wedge block 12 are in one-to-one correspondence and are in mutual compression fit;
a plurality of arc limiting grooves 18 are formed in the right side face of the cover plate 7 in the circumferential direction, limiting pins 19 which are the same in number and correspond to the arc limiting grooves 18 in one to one mode are formed in the left side face of the driven chain plate 3 in the circumferential direction, and each limiting pin 19 correspondingly extends into one arc limiting groove 18.
Pressure sensing dynamic monitoring module includes location snap ring 20, dish spring 21, pressure sensor 22 and the thrust bearing 23 that sets gradually from the left hand right side, and location snap ring 20 is established at 1 excircle of rear axle and is located 8 right sides of second bearing, and dish spring 21 left end cooperates with the crimping of location snap ring 20, and dish spring 21 right-hand member cooperates with the crimping of pressure sensor 22, and pressure sensor 22 passes through thrust bearing 23 and 5 right sides bottom crimps of mounting groove.
The axial elastic positioning component comprises a fixing ring 24, a spring 25 and a guide screw 26, the fixing ring 24 is coaxially mounted on the left side of the outer circle of the shell 6, the fixing ring 24 is connected with the shell 6 through a radially arranged screw 27, three threaded holes 28 are formed in the circumferential direction of the cover plate 7 and the flange plate 16, a guide hole 29 corresponding to the threaded hole 28 is formed in the right side face of the rear wheel rim 4, the guide screw 26 penetrates from right to left and is in threaded connection with the threaded hole 28, the left end of the guide screw 26 extends into the guide hole 29, the spring 25 is mounted on the guide screw 26, the left end and the right end of the spring 25 are respectively in compression joint with the right side face of the rear wheel rim 4 and the flange plate 16, and under the action of the spring 25, the left side face of the rear wheel rim 4 is in compression joint with the right side face of the fixing ring 24.
The booster motor comprises rotor magnetic steel 30 and a stator 31 which are in clearance fit, the stator 31 is fixedly installed on the rear shaft 1, and the rotor magnetic steel 30 is fixedly arranged on the inner circle of the shell 6.
The excircle of the first bearing 2 is in clearance fit with the inner circle of the driven chain disc 3, the excircle of the second bearing 8 is in clearance fit with the inner circle of the left side of the shell 6, and the excircle 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: a rider treads pedals arranged at two ends of a rear shaft 1 with two feet respectively to drive a middle shaft and a driving chain disc to rotate, the driving chain disc drives a driven chain disc 3 to rotate through a chain, a second arc-shaped wedge block 12 on the left side of the driven chain disc 3 extrudes a first arc-shaped wedge block 11 on the right side of a cover plate 7, the extrusion force F is perpendicular to a wedge surface and is decomposed into a radial component force F1 and an axial component force F2, the radial component force F1 drives the cover plate 7 to rotate, the cover plate 7 drives a shell 6 to rotate through a connecting bolt assembly 10 and a guide screw rod 26, and a rear wheel rim 4 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 achieved.
Meanwhile, the cover plate 7 and the shell 6 are pushed to move leftwards (the moving distance is small) along the rear shaft 1 by the axial component force F2 of the extrusion force F, the pressure sensor 22 senses that the shell 6 exerts leftward axial pressure on the thrust bearing 23, the pressure sensor 22 transmits acquired pressure signals to a controller of the electric vehicle, the controller sends a power-assisted starting signal to the power-assisted motor according to the received pressure signals, a battery of the electric vehicle supplies power to the power-assisted motor and provides current matched with the pressure signals acquired by the pressure sensor 22, and the torque of the rotor magnetic steel 30 is increased to assist the rear shaft 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 excircle of the rear shaft 1, the pressure signal monitored by the pressure sensor 22 is smaller than the minimum value of the power-assisted signal sent to the controller, and the power-assisted 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 achieve relative rotation, the limiting pin 19 moves in the arc-shaped limiting groove 18, and when the limiting pin 19 is in pressure joint with one end of the arc-shaped limiting groove 18, the shell 6 moves to the limit leftwards, namely the pressure signal collected by the pressure sensor 22 reaches the maximum value, and the assistance of the power-assisted motor reaches the set maximum value. The cooperation of the limiting pin 19 and the arc-shaped limiting groove 18 prevents the wedge surfaces of the second arc-shaped wedge 12 and the first arc-shaped wedge 11 from being separated from each other, thereby ensuring the reliability of the pressure signal acquisition.
The invention adopts the way that a rider applies external force to a pedal to enable the wedge surfaces of the second arc-shaped wedge block 12 and the first arc-shaped wedge block 11 to be mutually extruded, and the pressure sensor 22 acquires the signal of the axial component force F2 of the extrusion force F of the wedge surfaces in real time and transmits the signal to the controller so as to achieve the real-time regulation of the output torque of the power-assisted motor. The pedal has the advantages that the pedal is pushed by the rider to move, and the pedal is pushed by the rider to move.
A fixing ring 24 is arranged on the left side of the outer circle of the shell 6, a guide screw 26 and a spring 25 are arranged on the right side of the outer circle of the shell 6, and the fixing ring and the spring together play a role in resetting the shell 6 in the axial direction. The positioning snap ring 20 is used for positioning the position of the left end of the disc spring 21.
The excircle of the first bearing 2 is in clearance fit with the inner circle of the driven chain disc 3, the excircle of the second bearing 8 is in clearance fit with the inner circle of the left side of the shell 6, and the excircle of the third bearing 17 is in clearance fit with the inner circle of the cover plate 7. These clearance fit configurations ensure flexibility in axial movement of the housing 6. Of course, the movement of the housing 6 is small, and may be 1-3mm, and the pressure sensor 22 may sense the change of the axial pressure.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a moment helping hand electric motor car drive arrangement which characterized in that: the dynamic pressure sensing monitoring device comprises a casing which is rotatably connected to a rear shaft of an electric vehicle, wherein the casing is integrally cylindrical, the central line of the casing coincides with the central line of the rear shaft, a power-assisted motor which is installed on the rear shaft is arranged on the left side inside the casing, a driven chain disc which is located on the right side of the casing is installed 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 casing, an outer circle of the casing is in transmission connection with an inner circle of a rear wheel rim of the electric vehicle through a spline structure, an axial elastic positioning assembly is arranged between the outer circle of the casing and the left and right side surfaces of the rear wheel rim, a mounting groove is formed in the center of the left side of the casing and is concave towards the right, a dynamic pressure sensing monitoring module which is installed on the rear shaft is arranged in the mounting groove, the dynamic pressure sensing monitoring module is connected with a controller of the electric vehicle through a signal line, and the controller is connected with the power-assisted motor through a control cable.
2. A torque-assisted electric vehicle drive as claimed in claim 1, wherein: the casing includes the open casing in right side, the apron on casing right side, casing left side is passed through the second bearing and is connected with the rear axle rotation, the second bearing is located the mounting groove, the casing left side is equipped with the end cover of closed mounting groove, the apron is connected with the ring flange of casing right-hand member body structure through the three connecting bolt subassembly of circumference array, circle is connected with the rear axle rotation through the third bearing in the apron, 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 as claimed in claim 1, wherein: the axial extrusion force transmission mechanism comprises a first arc-shaped wedge block and a second arc-shaped wedge block which are at least three, the first arc-shaped wedge block is 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 block is 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 block and the second arc-shaped wedge block are in one-to-one correspondence and are in mutual compression joint;
a plurality of arc spacing grooves are formed in the right side face of the cover plate in the circumferential direction, the spacing pins which are the same in number as the arc spacing grooves and correspond to the arc spacing grooves one to one are formed in the left side face of the driven chain disc in the circumferential direction, and each spacing pin correspondingly extends into one arc spacing groove.
4. A torque-assisted electric vehicle drive as claimed in claim 2 or 3, wherein: 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, the positioning snap ring is arranged on the excircle of the rear shaft and positioned on the right side of the second bearing, the left end of the disc spring is in compression joint with the positioning snap ring, the right end of the disc spring is in compression joint with the pressure sensor, and the pressure sensor is in compression joint with the bottom of the right side of the mounting groove through the thrust bearing.
5. A torque-assisted electric vehicle drive as claimed in claim 2 or 3, wherein: the axial elastic positioning assembly comprises a fixing ring, a spring and a guide screw rod, the fixing ring is coaxially mounted on the left side of the outer circle of the shell, the fixing ring is connected with the shell through a radially arranged screw, three threaded holes are formed in the cover plate and the flange plate in the circumferential direction, a guide hole corresponding to the threaded hole is formed in the right side face of the rear wheel rim, the guide screw rod penetrates from right to left and is in threaded connection with the threaded hole, the left end of the guide screw rod extends into the guide hole, the spring is mounted on the guide screw rod, the left end and the right end of the spring are respectively in compression joint with the right side face of the rear wheel rim and the flange plate, and under the action of the spring, the left side face of the rear wheel rim is in compression joint with the right side of the fixing ring.
6. A torque-assisted electric vehicle drive as claimed in claim 1, 2 or 3, wherein: 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.
7. A torque-assisted electric vehicle drive as claimed in claim 2, wherein: the excircle of the first bearing is in clearance fit with the inner circle of the driven chain disc, the excircle of the second bearing is in clearance fit with the inner circle on the left side of the shell, and the excircle of the third bearing is in clearance fit with the inner circle of the cover plate.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN115158524A true CN115158524A (en) | 2022-10-11 |
| CN115158524B 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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| CN115158524B (en) | 2024-01-05 |
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