CN108340765B - Electric speed-increasing clutch of hybrid electric vehicle - Google Patents
Electric speed-increasing clutch of hybrid electric vehicle Download PDFInfo
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- CN108340765B CN108340765B CN201810046713.XA CN201810046713A CN108340765B CN 108340765 B CN108340765 B CN 108340765B CN 201810046713 A CN201810046713 A CN 201810046713A CN 108340765 B CN108340765 B CN 108340765B
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- planet carrier
- gear ring
- outer gear
- brake caliper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
- B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/44—Mechanical mechanisms transmitting rotation
- F16D2125/46—Rotating members in mutual engagement
- F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Structure Of Transmissions (AREA)
- Braking Arrangements (AREA)
Abstract
An electric speed-up clutch of a hybrid electric vehicle and a control method thereof comprise a speed-down motor, a screw nut mechanism, a shell, a brake caliper and a planetary gear train component, wherein the shell is of a disc-type shell structure with an upper part and a lower part, and the planetary gear train component is arranged in a circular area; the sun gear is fixed on a shaft of the planet carrier, the planet gear is fixed on the planet carrier, the planet carrier is embedded into the outer gear ring, and the planet gear is respectively meshed with the sun gear and the outer gear ring; an inner rotating hub and a shock absorber shell are sequentially arranged outside the outer gear ring, and the shock absorber shell is fixed on the outer gear ring through a bolt; four rectangular grooves are respectively and correspondingly formed in the shock absorber shell, the inner rotating hub and the outer gear ring, and a torsion spring is arranged in each rectangular groove; the planet carrier is connected with the engine through a shaft penetrating through the sun gear; the speed reducing motor is connected with the screw nut mechanism, the screw nut mechanism is connected with the brake calipers through steel wires, the brake calipers are installed in the shell in a floating mode, and the brake calipers are provided with two friction plates. The invention has the advantages of simple structure, short axial dimension, reduction of torsional vibration and the like.
Description
Technical Field
The invention relates to the technical field of hybrid electric vehicles, in particular to an electric speed-up clutch of a hybrid electric vehicle and a control method thereof.
Background
The development of new energy automobiles is a necessary choice for realizing energy conservation and emission reduction and sustainable development of the automobile industry. In recent years, related technologies of pure electric vehicles and fuel cell electric vehicles have been developed rapidly, but the industrialization of storage batteries and fuel cells is severely limited due to the problems of low energy density, short service life, high price and the like. The hybrid electric vehicle can be used as a transition vehicle type from a fuel vehicle to a pure electric vehicle, can couple the power of an engine and the power of a driving motor, can utilize the advantages of long continuous working time and good power performance of the engine, and can also exert the advantages of low speed, large torque, high efficiency and low noise of the motor. Under the combined action of the engine and the driving motor, the hybrid electric vehicle can greatly improve the driving efficiency of the whole vehicle and reduce emission through advantage complementation. The popularization of hybrid electric vehicles is a main way for the automobile industry to promote the development of new energy vehicles under the large background that the power battery technology is not completely solved.
The hybrid electric vehicle can be divided into a series type, a parallel type and a series-parallel type according to the driving form. At present, coaxial parallel connection and parallel connection are the main driving forms of the hybrid electric vehicle, and therefore, a large axial space is required to be occupied. The large axial length inevitably affects the arrangement of the whole vehicle, and for a rear-drive vehicle type, the problem can be solved properly by adjusting the spatial layout, but the overall attractiveness and riding comfort are affected; for the front-wheel drive type, the driving system is arranged between the driving wheels at two sides, but a great problem exists. In many vehicle types, the problem of insufficient axial space is solved by sacrificing the power of a motor and an engine or selecting a wider vehicle body, so that the contradiction of insufficient small power of the vehicle type and poor economy of the vehicle type is caused. Therefore, the entire hybrid system must have a compact axial size.
The engine is a complex mechanical system, and is limited by the structure and the combustion principle, the engine cannot normally work at a low rotating speed, and the high efficiency area is generally 1800 plus 2500 rad/min. The motor is influenced by the electromagnetic induction characteristic, can continuously work from 0 rotating speed to the highest rotating speed, and the high efficiency range is generally 3000 plus 6000 rad/min. Therefore, the working characteristics of the engine and the motor are inconsistent, a large rotating speed difference exists in a high-efficiency interval, and if the engine and the motor work efficiently and coaxially, a coupling device with clutch and speed increasing effects needs to be added between the engine and the motor, so that the hybrid electric vehicle can freely and smoothly switch driving modes and match the high-efficiency intervals of the engine and the motor consistently.
With the development of automobile technology, the service performance and safety of hybrid electric vehicles of different brands are basically guaranteed, so that the riding comfort becomes the key point of market competition, and the NVH problem becomes an important index of the whole vehicle comfort and becomes a content of great attention of people. Vibration is also becoming increasingly important as an important indicator of NVH. Shock excitation generated when the engine operates and shock generated when the hybrid system mode is switched are two important causes of vibration of the hybrid vehicle, so a damping device must be included in a transmission assembly of the hybrid system.
Disclosure of Invention
The invention aims to provide an electric speed-up clutch of a hybrid electric vehicle, which has the advantages of simple structure, short axial dimension, reduction of torsional vibration of a transmission system and special application to connection between an engine and a driving motor of the hybrid electric vehicle, and a control method thereof.
In order to realize the purpose, the following technical scheme is adopted: the invention relates to an electric speed-up clutch of a hybrid electric vehicle, which mainly comprises a speed-down motor, a screw nut mechanism, a shell, a brake caliper and a planetary gear train component, wherein the shell is of a disc-type shell structure with an upper part and a lower part, and the circular area is provided with the planetary gear train component consisting of a sun gear, a planetary gear, a planet carrier and an outer gear ring; the sun gear is fixed on a shaft of the planet carrier through a bearing, the planet gear is fixed on the planet carrier through a shaft and a bearing, the planet carrier is embedded into the outer gear ring, and the planet gear is respectively meshed with the sun gear and the outer gear ring; an inner rotating hub and a shock absorber shell are sequentially arranged outside the outer gear ring, the shock absorber shell is fixed on the outer gear ring through a bolt, and the inner rotating hub is clamped between the shock absorber shell and the outer gear ring; four rectangular grooves are respectively and correspondingly formed in the shock absorber shell, the inner rotating hub and the outer gear ring, and a torsion spring is arranged in each rectangular groove of the shock absorber shell, the inner rotating hub and the outer gear ring; the planet carrier is connected with the engine through a shaft penetrating through the sun gear, the power of the engine is transmitted into the planetary gear train through the planet carrier, and the planet carrier rotates to drive the planetary gear to rotate around the axis of the planet carrier; the output end of the speed reducing motor is connected with the screw nut mechanism, the screw nut mechanism is connected with the brake caliper through a steel wire, a trapezoidal groove is processed in a square area of the shell, the brake caliper is installed in the trapezoidal groove of the shell in a floating mode and is provided with two friction plates, and the two friction plates are arranged on two sides of the sun wheel of the planetary gear train.
Furthermore, a tension sensor is arranged at the joint of the screw-nut mechanism and the steel wire.
Furthermore, the brake calipers comprise a fan-shaped rocker arm, a fixing bolt, a rotary push rod, a torsion spring, a caliper shell, a friction plate adjusting bolt, a shell mounting screw, two friction plates, a return spring, a rotary push rod, a nut, a bolt and a gasket; the brake caliper shell is divided into two parts which are connected through a bolt; the two friction plates are rectangular, circular mounting holes are formed in the upper portions of the friction plates, and the two friction plates are mounted on the two fixing bolts through the mounting holes; the return spring is arranged between the two friction plates; the rotary push rod is arranged on the shell at one side of the brake caliper, and an inner inclined surface of the rotary push rod is contacted with an inclined surface of the shell to generate horizontal thrust during rotation; the fan-shaped rocker arm is arranged on the rotary push rod and is fixed through a fixing bolt and a gasket; the torsion spring is installed between the fan-shaped rocker arm and the shell, one end of the torsion spring is fixed in the installation hole of the fan-shaped rocker arm, and the other end of the torsion spring is fixed in the installation hole of the shell.
Furthermore, the planet carrier is triangular in shape, 1 shaft is fixed on each corner of the planet carrier, a planetary gear is mounted on each shaft, the planetary gears are connected with the shafts through bearings, and the planetary gears are meshed with the sun gear and the outer gear ring.
Furthermore, the steel wire is arranged in a steel wire shell, and the steel wire shell is fixed on the shell through a support.
Furthermore, the upper part of the brake caliper speed-increasing clutch shell is provided with a trapezoidal groove, the two sides of the groove are provided with circular through holes, the circular through holes of the brake caliper shell are concentric with the circular through holes of the two sides of the groove through a pin shaft, and the brake caliper can slide on the cylindrical pin shaft. And a spring is arranged between the shell of the brake caliper and the inner wall of the groove, and the displacement of the brake caliper is limited by the spring.
When the automobile state needs the work of an engine, the whole automobile controller controls a clutch speed reducing motor to work, a fan-shaped rocker arm is pulled to rotate through a screw nut mechanism, a tension sensor and a steel wire, a brake caliper locks a sun gear, the tension sensor feeds a measured tension value back to the automobile controller, when the numerical value of the tension sensor meets the braking force requirement, the speed reducing motor stops rotating, at the moment, a planetary gear train only has one degree of freedom, and the speed increasing clutch is in a transmission state; when the automobile does not need the engine to work in an automobile state, the controller controls the speed reducing motor to work, the fan-shaped rocker arm is released through the lead screw nut structure, the tension sensor and the steel wire, the brake calipers return to the initial position, when the numerical value of the tension sensor is reduced to a preset value, the speed reducing motor stops working, the sun wheel of the planetary gear train rotates along with the engine at the moment, the planetary gear train has two degrees of freedom, the speed increasing clutch is in a separation state and does not transmit power, and the sun wheel spoke plate can replace the rotational inertia of the flywheel of the engine at the moment.
Compared with the prior art, the invention has the following advantages:
1. the functions necessary for connecting the engine and the motor of the hybrid electric vehicle are integrated, and the occupied size in the axial direction is reduced compared with the conventional hybrid electric vehicle in which each element is separately installed.
2. The whole structure is simple, the manufacturing cost is low, the dismounting is simple, and the key hardware support is provided for realizing the development of a high-performance hybrid power system.
3. The clutch braking force is controllable, and the operation and the adjustment are convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the speed increasing clutch of the present invention.
FIG. 2 is a three-dimensional view of the speed increasing clutch of the present invention.
FIG. 3 is a schematic view of the floating caliper installation of the present invention.
Fig. 4 is a left side exploded view of the planetary gear pair of the present invention.
Fig. 5 is a right-side exploded view of the planetary gear set of the present invention.
FIG. 6 is an exploded view of a caliper according to the present invention.
FIG. 7 is a control logic diagram of the acceleration clutch of the present invention.
Reference numerals: 1-speed reduction motor, 2-tension sensor, 3-steel wire shell, 4-steel wire, 5-fan-shaped rocker arm, 6-floating spring, 7-brake caliper shell, 8-adjusting bolt, 9-torsion damper spring, 10-internal rotating hub, 11-external gear ring, 12-planet carrier, 13-planet wheel, 14-sun wheel, 15-friction plate, 16-rotary push rod, 17-lead screw nut mechanism, 18-torsion damper shell, 19-fastening bolt, 20-torsion spring, 21-mounting bolt, 22-return spring, 23-nut, 24-bolt and 25-gasket.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, 2 and 3, the brake caliper mainly comprises a speed reducing motor 1, a screw nut mechanism 17, a shell 26, a brake caliper assembly and a planetary gear train assembly, wherein the shell is of a disc type shell structure with an upper part and a lower part being circular, and the planetary gear train assembly consisting of a sun gear 14, a planetary gear 13, a planet carrier 12 and an outer gear ring 11 is arranged in a circular area; as shown in fig. 4 and 5, the sun gear is fixed on the shaft of the planet carrier through a bearing, the planet gear is fixed on the planet carrier through a shaft and a bearing, the planet carrier is embedded into the outer gear ring, and the planet gear is respectively meshed with the sun gear and the outer gear ring; an inner rotating hub 10 and a shock absorber shell 18 are sequentially arranged outside the outer gear ring, the shock absorber shell is fixed on the outer gear ring through bolts, and the inner rotating hub 10 is clamped between the shock absorber shell 18 and the outer gear ring 11; four rectangular grooves are correspondingly formed in the shock absorber shell 18, the inner rotating hub 10 and the outer gear ring 11 respectively, a torsion spring 9 is installed in each rectangular groove of the shock absorber shell, the inner rotating hub and the outer gear ring, if torsional vibration or impact exists in the power transmission process, friction sliding can be generated between the inner rotating hub and the shock absorber shell and between the inner rotating hub and the outer gear ring, the torsion spring is compressed, and the vibration and the impact can be attenuated. The inner hub spline shaft of the torsional damper is used as the output end of the speed increasing clutch and is connected with the motor, and the shell of the torsional damper and the outer gear ring of the planetary gear train jointly form a shell of the torsional damper. The torsional damper shell is fixed on the outer gear ring through a bolt, the torsional damper shell is disc-shaped, a circular groove is formed in the middle of the torsional damper shell, and the inner rotating hub is clamped in the circular groove of the torsional damper shell. The shock absorber shell, the outer gear ring and the inner rotating hub are provided with four rectangular grooves, each rectangular groove is fixed with one torsion spring, the shock absorber transmits power through friction force and the torsion springs when in work, and vibration and impact generated when an engine and a mode are switched are relieved in the process of transmitting the power.
The planet carrier is connected with the engine through a shaft penetrating through the sun gear, the power of the engine is transmitted into the planetary gear train through the planet carrier, and the planet carrier rotates to drive the planetary gear to rotate around the axis of the planet carrier; the output end of the speed reducing motor is connected with a screw nut mechanism, the screw nut mechanism is connected with the brake caliper through a steel wire 4, a trapezoidal groove is processed in a square area of the shell, and the brake caliper is installed in the trapezoidal groove of the shell in a floating mode through a floating spring 6, so that the shell of the brake caliper has a fixed initial position. The brake caliper is provided with two friction plates 15, and the two friction plates are arranged on two sides of the sun gear of the planetary gear train. The outer gear ring of the planetary gear train also serves as a shell of the torsional damper and is used for transmitting power transmitted by the planetary gear to the torsional damper. A planet carrier spline sleeve of the planetary gear train is connected with an engine, the planet carrier spline sleeve is connected with a shell through a bearing, the planet carrier is triangular, 1 shaft is fixed on each angle, a planetary gear is installed on each shaft, the planetary gears are connected with the shafts through the bearings, and the planetary gears are meshed with a sun gear and an outer gear ring simultaneously. When the sun gear is fixed, the planetary gears transmit the power transmitted by the planetary carrier to the outer ring gear by meshing with the sun gear, and speed is increased in the process. The sun wheel of the planetary gear train is specially improved, a spoke plate is added on a common gear, the spoke plate is arranged between two friction plates of the brake caliper and is used as a friction plate of a clutch so as to brake the sun wheel, and when the pressure applied to one friction plate is greater than that applied to the other friction plate in the braking process, the brake caliper shell can overcome the elastic force of a positioning spring to move towards the direction of closing force until the two friction plates of the brake caliper are uniformly stressed. When the sun gear is not locked by the brake calipers, the power transmitted by the engine can be released through the free rotation of the sun gear, and the power cannot be transmitted to the outer gear ring to be output; after the sun gear is locked, the power is transmitted to the outer gear ring by the planetary gear, the rotating speed of the outer gear ring is larger than that of the planet carrier according to the power transmission characteristic of the planetary gear, and at the moment, the planetary gear train achieves the speed increasing function.
As shown in fig. 6, the brake caliper device includes a sector rocker arm fixing bolt, a sector rocker arm, a torsion spring, a housing, an adjusting screw, a housing mounting screw, a friction plate, a return spring, a rotary push rod, a nut, a bolt and a washer. The brake caliper shell is divided into two parts which are connected through a bolt; the friction plates are rectangular, circular mounting holes are formed in the upper portions of the friction plates, and the two friction plates are mounted on the two fixing bolts through the mounting holes; the return springs are arranged between the two friction plates, so that the friction plates are distributed on two sides under the condition of not being subjected to external force; the rotary push rod is arranged on the shell at one side of the brake caliper, and an inner inclined surface of the rotary push rod is contacted with an inclined surface of the shell to generate horizontal thrust during rotation; the fan-shaped rocker arm is arranged on the rotary push rod and is fixed with the gasket through a fixing bolt; the torsion spring is installed between the fan-shaped rocker arm and the shell, one end of the torsion spring is fixed in the installation hole of the fan-shaped rocker arm, and the other end of the torsion spring is fixed in the installation hole of the shell. When the brake caliper works, the motor pulls the fan-shaped rocker arm to rotate through the steel wire, the fan-shaped rocker arm drives the push rod to rotate, the rotating push rod and the shell are interacted to generate horizontal thrust, the friction plate is pushed to overcome the thrust of the return spring to generate axial movement, so that a sun wheel spoke plate is clamped, the rotation of the sun wheel is limited, and the clutch is in a closed state at the moment; when the brake caliper does not work, the fan-shaped rocker arm and the friction plate return to the initial position under the elastic force of the return spring and the torsion spring.
The brake caliper of the speed-up clutch is arranged in a trapezoidal groove at the top of the shell, the shell of the brake caliper is connected with the shell through a cylindrical pin shaft, and the brake caliper cannot freely slide on the pin shaft due to a positioning spring on the pin shaft. Two friction plates of the brake caliper are fixed in a shell of the brake caliper through a pin shaft and can slide along the direction of the pin shaft, and a return spring is arranged between the two friction plates, so that the friction plates are respectively arranged on two sides and the free sliding of the friction plates is limited. One side of the shell is provided with a rotary push rod, one end of the rotary push rod is oblate and is matched and connected with the fan-shaped rocker arm, the middle part of the rotary push rod is provided with a wedge-shaped inclined plane which is jointed with a circular inclined plane inside the shell of the brake caliper, when the rotary push rod rotates, axial thrust is generated, the other end of the rotary push rod is cylindrical, and the end surface of the rotary push rod is jointed and connected with a circular groove on the; the other side of the shell is provided with an adjusting bolt, and the reference position of the friction plate at the side is adjusted by rotating the adjusting bolt; the sector angle of the sector rocker arm is 120 degrees, the circle center is provided with an oblate hole, the circumference is provided with an inverted trapezoidal groove as a guide groove of the steel wire, and one end of the groove is provided with a fixing bolt for fixing the steel wire.
The speed reducing motor is fixed on the side surface of the shell, the output end of the speed reducing motor is connected with the screw nut mechanism, and the rotation is changed into linear motion through the screw nut mechanism. The output end of the screw nut is connected with the tension sensor, and the other end of the tension sensor is connected with the fan-shaped rocker arm through a steel wire. The steel wire is arranged in a special shell, and the steel wire shell is fixed on the shell through a support. When the speed reducing motor receives the locking signal, the speed reducing motor starts to rotate to drive the screw nut mechanism to rotate; the lead screw nut mechanism changes rotation into linear motion, pulls the tension sensor, the tension sensor pulls the steel wire to drive the sector rocker arm of the caliper to rotate, the sector rocker arm drives the rotary push rod to rotate, and the rotary push rod pushes the friction plate to clamp the sun wheel spoke plate. The fan-shaped rocker arm is adopted by the caliper rocker arm, so that in the locking process, the tension of the motor and the clamping force of the caliper are in a linear relation, the tension of a steel wire, namely the braking force of the caliper, is detected by the tension sensor, and when the tension reaches a target value, the motor stops working by the controller; when the friction plates of the caliper are worn, the adjusting bolt can be rotated to compensate the wear, the caliper is installed in a floating mode, the installation position of the shell of the caliper is guaranteed through the floating spring, and the two friction plates clamped by the caliper can be stressed evenly through slight floating during braking.
As shown in fig. 7, according to the control method of the electric speed-up clutch of the hybrid electric vehicle, when the vehicle state requires the engine to work, the vehicle controller controls the speed-up motor of the clutch to work, the fan-shaped rocker arm is pulled to rotate through the lead screw nut mechanism, the tension sensor and the steel wire, the brake caliper locks the sun gear, the tension sensor feeds the measured tension value back to the vehicle controller, when the value of the tension sensor meets the braking force requirement, the speed-up motor stops rotating, at the moment, the planetary gear train only has one degree of freedom, and the speed-up clutch is in a transmission state; when the automobile does not need the engine to work in an automobile state, the controller controls the speed reducing motor to work, the fan-shaped rocker arm is released through the lead screw nut structure, the tension sensor and the steel wire, the brake calipers return to the initial position, when the numerical value of the tension sensor is reduced to a preset value, the speed reducing motor stops working, the sun wheel of the planetary gear train rotates along with the engine at the moment, the planetary gear train has two degrees of freedom, the speed increasing clutch is in a separation state and does not transmit power, and the sun wheel spoke plate can replace the rotational inertia of the flywheel of the engine at the moment.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and they should fall within the protection scope defined by the claims of the present invention.
Claims (5)
1. The utility model provides an electric speed-up clutch of hybrid vehicle, mainly includes gear motor, lead screw nut mechanism, shell, brake caliper, planetary gear train subassembly, its characterized in that: the shell is of a disc type shell structure with an upper part and a lower part being round, and a planetary gear train component consisting of a sun gear, a planetary gear, a planet carrier and an outer gear ring is arranged in a round area; the sun gear is fixed on a shaft of the planet carrier through a bearing, the planet gear is fixed on the planet carrier through a shaft and a bearing, the planet carrier is embedded into the outer gear ring, and the planet gear is respectively meshed with the sun gear and the outer gear ring; an inner rotating hub and a shock absorber shell are sequentially arranged outside the outer gear ring, the shock absorber shell is fixed on the outer gear ring through a bolt, and the inner rotating hub is clamped between the shock absorber shell and the outer gear ring; four rectangular grooves are respectively and correspondingly formed in the shock absorber shell, the inner rotating hub and the outer gear ring, and a torsion spring is arranged in each rectangular groove of the shock absorber shell, the inner rotating hub and the outer gear ring; the planet carrier is connected with the engine through a shaft penetrating through the sun gear, the power of the engine is transmitted into the planetary gear train through the planet carrier, and the planet carrier rotates to drive the planetary gear to rotate around the axis of the planet carrier; the output end of the speed reducing motor is connected with the screw nut mechanism, the screw nut mechanism is connected with the brake caliper through a steel wire, a trapezoidal groove is processed in a square area of the shell, the brake caliper is installed in the trapezoidal groove of the shell in a floating mode and is provided with two friction plates, and the two friction plates are arranged on two sides of the sun wheel of the planetary gear train.
2. The electric speed-increasing clutch of the hybrid electric vehicle as claimed in claim 1, wherein: and a tension sensor is arranged at the joint of the screw rod nut mechanism and the steel wire.
3. The electric speed-increasing clutch of the hybrid electric vehicle as claimed in claim 1, wherein: the planet carrier is triangular in shape, a shaft is fixed at each corner of the planet carrier, a planet gear is arranged on each shaft, the planet gears are connected with the shafts through bearings, and the planet gears are meshed with the sun gear and the outer gear ring.
4. The electric speed-increasing clutch of the hybrid electric vehicle as claimed in claim 1, wherein: the steel wire is arranged in a steel wire shell, and the steel wire shell is fixed on the shell through a support.
5. The electric speed-increasing clutch of the hybrid electric vehicle as claimed in claim 1, wherein: the upper part of the shell is provided with a trapezoidal groove, the two sides of the groove are provided with circular through holes, the circular through holes of the shell of the brake caliper are concentric with the circular through holes at the two sides of the groove through a pin shaft, and the brake caliper can slide on a cylindrical pin shaft; and a spring is arranged between the shell of the brake caliper and the inner wall of the groove, and the displacement of the brake caliper is limited by the spring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810046713.XA CN108340765B (en) | 2018-01-18 | 2018-01-18 | Electric speed-increasing clutch of hybrid electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810046713.XA CN108340765B (en) | 2018-01-18 | 2018-01-18 | Electric speed-increasing clutch of hybrid electric vehicle |
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| CN108340765A CN108340765A (en) | 2018-07-31 |
| CN108340765B true CN108340765B (en) | 2021-01-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021185402A1 (en) * | 2020-03-17 | 2021-09-23 | Schaeffler Technologies AG & Co. KG | Hybrid transmission with axially short brake-clutch combination; and drive train |
| CN112032224B (en) * | 2020-08-31 | 2021-06-15 | 青州市春晖科技发展有限公司 | Electric automatic control execution brake device of oil pumping unit |
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