CN110576705A - Vehicle, drive axle and half shaft assembly - Google Patents
Vehicle, drive axle and half shaft assembly Download PDFInfo
- Publication number
- CN110576705A CN110576705A CN201810589944.5A CN201810589944A CN110576705A CN 110576705 A CN110576705 A CN 110576705A CN 201810589944 A CN201810589944 A CN 201810589944A CN 110576705 A CN110576705 A CN 110576705A
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- Prior art keywords
- half shaft
- upstream
- downstream
- shaft
- magnetorheological
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
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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
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
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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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Retarders (AREA)
Abstract
The invention relates to a vehicle, a drive axle and a half shaft assembly. The vehicle comprises a drive axle, wherein the drive axle of the drive axle pack comprises a main input shaft, a left half axle assembly and a right half axle assembly, each half axle assembly comprises an upstream half axle and a downstream half axle, opposite ends of the upstream half axle and the downstream half axle are in transmission connection through a magneto-rheological transmission structure, the magneto-rheological transmission structure comprises a sealing cavity arranged between the upstream half axle and the downstream half axle, magneto-rheological solution used for transmitting torque between the upstream half axle and the downstream half axle is arranged in the sealing cavity, and the magneto-rheological transmission structure further comprises an electromagnetic device used for changing the magnetic field environment where the magneto-rheological solution is located. The electromagnetic device is used for controlling the magnetic field intensity of the magnetorheological solution so as to control the damping of the magnetorheological solution, so that the disconnection of torque between an upstream half shaft and a downstream half shaft and the combination of different degrees are realized, the disconnection of the torque can be realized, the differential function of the half shafts can also be realized, the differential mechanism can be omitted, and the weight, the volume and the temperature rise during operation of the drive axle are effectively reduced.
Description
Technical Field
the invention relates to a vehicle, a drive axle and a half shaft assembly.
Background
the driving system of the vehicle generally includes a driving device, a transmission system and a driving axle, wherein the driving axle is located at the end of the driving system of the vehicle, the structure of the driving axle is generally as shown in fig. 1, and the driving axle includes a main speed reducer 1, a differential 2, a left half-shaft 3, a right half-shaft 4 and a driving axle housing, in the actual use process, the driving axle is connected with the frame through a suspension, the power of the driving device is transmitted to the main speed reducer through the transmission system, further transmitted to the half-shafts at the two ends through the differential, and transmitted to the wheel hubs 5 through the half-shafts, so as to drive the. In the process, the main speed reducer changes the transmission direction of the torque through the pair of bevel gear pairs, the speed ratio of the main speed reducer increases the torque of the driving device, and simultaneously, the rotating speed is reduced, so that the main speed reducer is suitable for the requirement of automobile running.
The drive axle has the following disadvantages in practical use: the transaxle is not cut off in the path of the torque transmission, which causes two problems: one is that when the vehicle does not need power traction in the running process (for example, when the vehicle does not need the driving device to output power in the sliding process), the oil consumption of the whole vehicle is increased because a large amount of energy consumed by not cutting off all the dragging and the non-effective linkage parts. The other type is that the components such as the main reducing gear of the drive axle, the differential mechanism, the half shaft and the like are rigidly connected in the direction of the torque transmission path, so that impact excitation of a road surface is transmitted to the half shaft through wheels and is transmitted to the differential mechanism and the main reducing gear through the half shaft, and the impact excitation of the uneven road surface acts on the main reducing gear in the meshing process, so that the main reducing gear is damaged, and the meshing noise of the main reducing gear is increased.
In order to overcome the defects of a drive axle in the using process, the Chinese patent with the application publication number of CN101780766A and the name of a drive axle half shaft clutch discloses a drive axle structure, the working principle of the drive axle half shaft clutch is consistent with that of a clutch arranged between a gearbox and an engine flywheel, namely, the half shaft clutch is arranged on a half shaft of the drive axle, and the disconnection and the combination of the half shaft of the drive axle are controlled by the disconnection and the combination of the half shaft clutch.
Disclosure of Invention
The invention aims to provide a drive axle which can realize the disconnection and transmission of torque and has simple structure; the invention also aims to provide a vehicle using the drive axle; the invention also aims to provide a half shaft assembly used in the drive axle.
In order to achieve the above purpose, the technical scheme 1 of the drive axle of the invention is as follows: a drive axle comprises a main input shaft, a left half shaft assembly and a right half shaft assembly, wherein the left half shaft assembly and the right half shaft assembly are in transmission connection with the main input shaft, each half shaft assembly comprises an upstream half shaft in transmission connection with the main input shaft and a downstream half shaft used for being connected with a hub, opposite ends of the upstream half shaft and the downstream half shaft are in transmission connection through a magnetorheological transmission structure, the magnetorheological transmission structure comprises a sealing cavity arranged between the upstream half shaft and the downstream half shaft, magnetorheological solution used for transmitting torque between the upstream half shaft and the downstream half shaft is arranged in the sealing cavity, and the magnetorheological transmission structure further comprises an electromagnetic device used for changing the magnetic field environment where the magnetorheological solution is located.
The upstream half shaft and the downstream half shaft transmit power through the magneto-rheological solution, the magnetic field intensity of the magneto-rheological solution is controlled through the electromagnetic device, the damping size of the magneto-rheological solution is further controlled, and the disconnection of torque and the combination of different degrees between the upstream half shaft and the downstream half shaft are realized, so that the disconnection of the torque can be realized, the differential function of the half shafts can also be realized, the differential mechanism can be cancelled, the weight, the volume and the temperature rise during operation of the drive axle are effectively reduced, and meanwhile, the noise performance of the drive axle body is improved due to the reduction of the meshing number of gear pairs.
The invention discloses a technical scheme 2 of a drive axle, which is further improved on the basis of the technical scheme 1: and blades which extend along the radial direction and are used for increasing the driving surface between the upstream half shaft and the magnetorheological solution and between the downstream half shaft and the magnetorheological solution are arranged on the outer peripheral surface of the upstream half shaft and/or the downstream half shaft. The blades are arranged on the outer peripheral surface of the upstream half shaft and/or the downstream half shaft, so that the acting area between the upstream half shaft and/or the downstream half shaft and the magnetorheological solution can be increased, and the transmission efficiency of the torque is improved.
The invention discloses a technical scheme 3 of a drive axle, which is further improved on the basis of the technical scheme 1 or 2: the upstream half shaft and the downstream half shaft are coaxially arranged, the connecting end of one of the upstream half shaft and the downstream half shaft is provided with a jack, and the connecting end of the other one of the upstream half shaft and the downstream half shaft is provided with a plug which is in sealed and rotating assembly in the jack to form the sealed chamber between the upstream half shaft and the downstream half shaft. The sealing cavity is formed by the structures of the upstream half shaft and the downstream half shaft, so that the structure is simple, the cost is reduced, the axial size and the circumferential size of the half shaft are greatly reduced by the design mode of the sealing cavity, the structure is compact, and the space is saved.
The invention discloses a technical scheme 4 of a drive axle, which is further improved on the basis of the technical scheme 3: the plug is rotatably fitted in the socket through a bearing.
The invention discloses a technical scheme 5 of a drive axle, which is further improved on the basis of the technical scheme 4: the bearing is located outside the sealed chamber.
The invention discloses a technical scheme 6 of a drive axle, which is further improved on the basis of the technical scheme 4: one of the plug and the inner wall of the jack is provided with an annular blocking platform along the radial direction, and a sealing ring is arranged between the other plug and the annular blocking platform so that the annular blocking platform and the inner wall of the jack enclose a sealing chamber.
the invention relates to a technical scheme 7 of a drive axle, which is further improved on the basis of the technical scheme 1 or 2 or 4 or 5 or 6: the input end of the main input shaft is connected with a main speed reducer, and the left half shaft assembly and the right half shaft assembly are connected with the output end of the main speed reducer and then are in transmission connection with the main input shaft.
The invention discloses a technical scheme 8 of a drive axle, which is further improved on the basis of the technical scheme 7: the left half shaft assembly and the right half shaft assembly are connected with the output end of the main speed reducer through splines.
The invention relates to a technical scheme 9 of a drive axle, which is further improved on the basis of the technical scheme 1 or 2 or 4 or 5 or 6: the electromagnetic device is positioned on the axle housing of the drive axle.
In order to achieve the above object, a technical solution 1 of a vehicle of the present invention is: a vehicle comprises a vehicle body and a driving system, wherein the driving system comprises a transmission shaft and a driving axle connected with the transmission shaft, the driving axle comprises a main input shaft, a left half shaft assembly and a right half shaft assembly, the left half shaft assembly and the right half shaft assembly are in transmission connection with the main input shaft, each half shaft assembly comprises an upstream half shaft in transmission connection with the main input shaft and a downstream half shaft for being connected with a wheel hub, opposite ends of the upstream half shaft and the downstream half shaft are in transmission connection through a magnetorheological transmission structure, the magnetorheological transmission structure comprises a sealing chamber arranged between the upstream half shaft and the downstream half shaft, magnetorheological solution for transmitting torque between the upstream half shaft and the downstream half shaft is arranged in the sealing chamber, and the magnetorheological transmission structure further comprises an electromagnetic device for changing the magnetic field environment where the magnetorheological solution is.
The upstream half shaft and the downstream half shaft transmit power through the magneto-rheological solution, the magnetic field intensity of the magneto-rheological solution is controlled through the electromagnetic device, the damping size of the magneto-rheological solution is further controlled, and the disconnection of torque and the combination of different degrees between the upstream half shaft and the downstream half shaft are realized, so that the disconnection of the torque can be realized, the differential function of the half shafts can also be realized, the differential mechanism can be cancelled, the weight, the volume and the temperature rise during operation of the drive axle are effectively reduced, and meanwhile, the noise performance of the drive axle body is improved due to the reduction of the meshing number of gear pairs.
the technical scheme 2 of the vehicle is further improved on the basis of the technical scheme 1: and blades which extend along the radial direction and are used for increasing the driving surface between the upstream half shaft and the magnetorheological solution and between the downstream half shaft and the magnetorheological solution are arranged on the outer peripheral surface of the upstream half shaft and/or the downstream half shaft. The blades are arranged on the outer peripheral surface of the upstream half shaft and/or the downstream half shaft, so that the acting area between the upstream half shaft and/or the downstream half shaft and the magnetorheological solution can be increased, and the transmission efficiency of the torque is improved.
The technical scheme 3 of the vehicle is further improved on the basis of the technical scheme 1 or 2: the upstream half shaft and the downstream half shaft are coaxially arranged, the connecting end of one of the upstream half shaft and the downstream half shaft is provided with a jack, and the connecting end of the other one of the upstream half shaft and the downstream half shaft is provided with a plug which is in sealed and rotating assembly in the jack to form the sealed chamber between the upstream half shaft and the downstream half shaft. The sealing cavity is formed by the structures of the upstream half shaft and the downstream half shaft, so that the structure is simple, the cost is reduced, the axial size and the circumferential size of the half shaft are greatly reduced by the design mode of the sealing cavity, the structure is compact, and the space is saved.
The technical scheme 4 of the vehicle is further improved on the basis of the technical scheme 3: the plug is rotatably fitted in the socket through a bearing.
The technical scheme 5 of the vehicle is further improved on the basis of the technical scheme 4: the bearing is located outside the sealed chamber.
The technical scheme 6 of the vehicle is further improved on the basis of the technical scheme 4: one of the plug and the inner wall of the jack is provided with an annular blocking platform along the radial direction, and a sealing ring is arranged between the other plug and the annular blocking platform so that the annular blocking platform and the inner wall of the jack enclose a sealing chamber.
The technical scheme 7 of the vehicle is further improved on the basis of the technical scheme 1 or 2 or 4 or 5 or 6: the input end of the main input shaft is connected with a main speed reducer, and the left half shaft assembly and the right half shaft assembly are connected with the output end of the main speed reducer and then are in transmission connection with the main input shaft.
The technical scheme 8 of the vehicle is further improved on the basis of the technical scheme 7: the left half shaft assembly and the right half shaft assembly are connected with the output end of the main speed reducer through splines.
The invention relates to a technical scheme 9 of a vehicle, which is further improved on the basis of the technical scheme 1 or 2 or 4 or 5 or 6: the electromagnetic device is positioned on the axle housing of the drive axle.
in order to achieve the purpose, the technical scheme 1 of the half shaft component comprises the following steps: a half shaft assembly comprises an upstream half shaft and a downstream half shaft, wherein the opposite ends of the upstream half shaft and the downstream half shaft are in transmission connection through a magneto-rheological transmission structure, a connecting part used for being in transmission connection with a main input shaft is arranged at one end, away from the magneto-rheological transmission structure, of the upstream half shaft, a connecting part used for being in transmission connection with a wheel hub is arranged at one end, away from the magneto-rheological transmission structure, of the downstream half shaft, the magneto-rheological transmission structure comprises a sealing cavity arranged between the upstream half shaft and the downstream half shaft, magneto-rheological solution used for transmitting torque between the upstream half shaft and the downstream half shaft is arranged in the sealing cavity, and the magneto-.
The upstream half shaft and the downstream half shaft transmit power through the magneto-rheological solution, the magnetic field intensity of the magneto-rheological solution is controlled through the electromagnetic device, the damping size of the magneto-rheological solution is further controlled, and the disconnection of torque and the combination of different degrees between the upstream half shaft and the downstream half shaft are realized, so that the disconnection of the torque can be realized, the differential function of the half shafts can also be realized, the differential mechanism can be cancelled, the weight, the volume and the temperature rise during operation of the drive axle are effectively reduced, and meanwhile, the noise performance of the drive axle body is improved due to the reduction of the meshing number of gear pairs.
The technical scheme 2 of the half shaft component is further improved on the basis of the technical scheme 1: and blades which extend along the radial direction and are used for increasing the driving surface between the upstream half shaft and the magnetorheological solution and between the downstream half shaft and the magnetorheological solution are arranged on the outer peripheral surface of the upstream half shaft and/or the downstream half shaft. The blades are arranged on the outer peripheral surface of the upstream half shaft and/or the downstream half shaft, so that the acting area between the upstream half shaft and/or the downstream half shaft and the magnetorheological solution can be increased, and the transmission efficiency of the torque is improved.
the technical scheme 3 of the half shaft component is further improved on the basis of the technical scheme 1 or 2: the upstream half shaft and the downstream half shaft are coaxially arranged, the connecting end of one of the upstream half shaft and the downstream half shaft is provided with a jack, and the connecting end of the other one of the upstream half shaft and the downstream half shaft is provided with a plug which is in sealed and rotating assembly in the jack to form the sealed chamber between the upstream half shaft and the downstream half shaft. The sealing cavity is formed by the structures of the upstream half shaft and the downstream half shaft, so that the structure is simple, the cost is reduced, the axial size and the circumferential size of the half shaft are greatly reduced by the design mode of the sealing cavity, the structure is compact, and the space is saved.
The technical scheme 4 of the half shaft component is further improved on the basis of the technical scheme 3: the plug is rotatably fitted in the socket through a bearing.
The technical scheme 5 of the half shaft component is further improved on the basis of the technical scheme 4: the bearing is located outside the sealed chamber.
the technical scheme 6 of the half shaft component is further improved on the basis of the technical scheme 4: one of the plug and the inner wall of the jack is provided with an annular blocking platform along the radial direction, and a sealing ring is arranged between the other plug and the annular blocking platform so that the annular blocking platform and the inner wall of the jack enclose a sealing chamber.
Drawings
FIG. 1 is a schematic view of a drive axle structure in the prior art;
FIG. 2 is a schematic view of a drive axle structure in a vehicle embodiment 1 according to the present invention;
FIG. 3 is a structural view of a transaxle in an embodiment 1 of a vehicle according to the present invention;
FIG. 4 is an enlarged view of the junction of the upstream and downstream half shafts of the right half shaft of FIG. 3;
FIG. 5 is a block diagram of the upstream axle shaft of FIG. 4;
FIG. 6 is a block diagram of the downstream axle shaft of FIG. 4;
FIG. 7 is a radial cross-sectional view of the junction of the upstream and downstream axle shafts of FIG. 4;
FIG. 8 is a flowchart illustrating a control of a motion state of a vehicle according to embodiment 1 of the present invention;
FIG. 9 is a diagram of a first connection of the upstream axle shaft and the downstream axle shaft in one embodiment 3 of the vehicle of the present invention;
FIG. 10 is a diagram of a second connection of the upstream axle shaft and the downstream axle shaft in one embodiment 3 of the vehicle of the present invention;
in fig. 1: 1. a main reducer; 2. a differential mechanism; 3. a left half shaft; 4. a right half shaft; 5. a hub;
In fig. 2 to 9: 1. a main reducer; 11. inputting the conical teeth; 12. an output conical tooth; 2. a left half-shaft assembly; 3. a right half shaft assembly; 31. an upstream half shaft; 311. a plug; 312. a bearing inner seat; 313. a blade; 32. a downstream half shaft; 321. a jack; 322. a bearing outer seat; 323. an annular baffle table; 324. an annular groove; 325. a blade; 33. sealing the chamber; 34. an electromagnetic coil; 35. a controller; 36. a bearing; 37. a power source; 5. a hub; 6. a support bearing; 8. an axle housing; 9. a connecting sleeve; 10. a blade; 101. an annular connecting cylinder.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The specific embodiment 1 of the vehicle comprises a vehicle body, wherein a driving system is arranged on the vehicle body, the driving system comprises a transmission shaft and a driving axle connected with the transmission shaft, the output ends of the two ends of the driving axle are connected with hubs 5 of two wheels, the specific structure of the driving axle is shown in fig. 2 to 7 and comprises an axle housing 8, a main reducer 1 is arranged in the middle of the inner side of the axle housing, a left half shaft assembly 2 and a right half shaft assembly 3 are respectively arranged on the left side and the right side of the main reducer, and supporting bearings 6 are respectively arranged on the left half shaft assembly and the right half shaft assembly. The main speed reducer 1 comprises a pair of conical teeth, namely an input conical tooth 11 and an output conical tooth 12, the input conical tooth 11 is connected with a main input shaft of a drive axle, an output end of the output conical tooth 12 is connected with a left half shaft assembly and a right half shaft assembly through splines, and the two conical teeth are mainly used for changing the transmission direction of torque and reducing speed and increasing torque.
The left half shaft assembly 2 and the right half shaft assembly 3 are identical in structure and symmetrically arranged, taking the right half shaft assembly 3 as an example, the left half shaft assembly 2 and the right half shaft assembly 3 comprise an upstream half shaft 31 and a downstream half shaft 32 which are coaxially arranged, opposite ends of the upstream half shaft and the downstream half shaft are in transmission connection through a magneto-rheological transmission structure, one end of the upstream half shaft departing from the magneto-rheological transmission structure is connected with the output end of a main speed reducer, one end of the downstream half shaft departing from the magneto-rheological transmission structure is connected with a wheel hub, and the magneto-: the end of the upstream half shaft 31 close to the downstream half shaft is provided with a plug 311, the outer diameter of the end of the downstream half shaft 32 close to the plug is increased, the end of the large-diameter section is provided with a jack 321, the root of the outer side surface of the plug 311 is provided with a bearing inner seat 312, the opening of the inner wall surface of the jack 321 is provided with a bearing outer seat 322, the plug 311 is rotatably assembled in the jack 321 through a bearing 36 arranged between the bearing inner seat 312 and the bearing outer seat 322, so that the upstream half shaft 31 and the downstream half shaft 32 are axially connected and circumferentially connected together, the opening of the gap between the jack and the plug is provided with a sealing structure for sealing the gap outlet, so as to form a sealing chamber 33 between the plug and the jack, the bearing is positioned outside the sealing chamber, the sealing structure comprises an annular baffle 323 arranged on the inner wall surface of the jack, and the end of, a sealing ring which is in sliding sealing fit with the outer side surface of the plug is embedded in the annular groove 324.
The sealing chamber 33 is filled with magnetorheological solution, the position, corresponding to the sealing chamber, on the outer side surface of the plug 311 is provided with a blade 313 which is in contact with the magnetorheological solution and further pushes the magnetorheological solution to rotate, the blade surface of the blade 313 is provided with a driving surface, the driving surface is in contact with the magnetorheological solution and further pushed to rotate by the magnetorheological solution, the wall surface of the insertion hole 321 is provided with a blade 325, the driving surface is in contact with the magnetorheological solution and further pushed to rotate by the magnetorheological solution, and the blade surface of the blade 325 is provided with a driving surface, the inner. And an electromagnetic device for changing the magnetic field environment of the magnetorheological solution is arranged outside the sealed chamber 33, and the electromagnetic device comprises an electromagnetic coil 34 and a controller 35 for controlling the current of the electromagnetic coil, wherein the electromagnetic coil is distributed uniformly along the circumferential direction of the sealed chamber. The solenoid 34 and the controller 35 are both disposed on the axle housing, and the controller 35 is connected to a power source 37 via a cable.
In the actual use process of the vehicle, when the whole vehicle runs, the torque of the driving device is transmitted to the upstream half shafts of the left half shaft assembly and the right half shaft assembly through the main speed reducer, the upstream half shafts rotate and stir magnetorheological solutions through the blades to rotate, the blades drive the downstream half shafts to rotate, and the power torque is transmitted in the process and drives the hub to run. In the process, the controller adjusts the strength of the magnetic induction line generated by the electromagnetic coil by controlling the current according to the running working condition of the whole vehicle, so as to control the damping size of the magnetorheological solution, realize the disconnection of the torque between the upstream half shaft and the downstream half shaft and the combination of different degrees, further realize the differential function of the half shafts under the condition of realizing the disconnection of the torque, thus canceling the differential mechanism, effectively reducing the weight, the volume and the temperature rise during the running of the drive axle, and simultaneously improving the noise performance of the drive axle body due to the reduction of the meshing number of the gear pairs.
In addition, fig. 8 shows a control method of the vehicle in the actual use process of the present invention, and the basic principle is that the controller controls the current of the electromagnetic coil according to the input signal of each state when the vehicle runs, so as to control the magnetic field intensity generated by the electromagnetic coil, thereby realizing the adjustment of the damping value of the magnetorheological solution. For example: when the whole vehicle turns, the controller reads the turning angle of the steering wheel, based on the turning angle, the controllers on the left half shaft assembly and the right half shaft assembly respectively output different current values to enable the electromagnetic coils on the left half shaft assembly and the right half shaft assembly to generate different magnetic field strengths, so that magnetorheological solutions on the left half shaft assembly and the right half shaft assembly present different damping values, so that the downstream half shafts of the left half shaft assembly and the right half shaft assembly present different rotating speeds (if the rotating speed of the upstream half shaft of the left half shaft assembly is 100%, the rotating speed is transmitted to the downstream half shaft by controlling the damping value alpha of the magnetorheological solutions on the left half shaft assembly to reach 99.7%, and at the moment, the rotating speed of the upstream half shaft of the right half shaft assembly is also 100%, and if alpha is greater than beta, the rotating speed of the downstream half shaft of the right half shaft assembly is less than 99.7%, the downstream half shafts of the right half shaft assembly have different rotating speeds), and the differential function is realized. When the whole vehicle brakes, the controller outputs the maximum current to the electromagnetic coil through the wire harness, so that the upstream half shaft and the downstream half shaft are in a strong connection state, and at the moment, the hub is required to drag the transmission system, the gearbox and other transmission system upstream parts through the half shafts, so as to ensure the braking performance of the whole vehicle (on one hand, the braking performance is improved through the rotational inertia of the upstream parts, and on the other hand, the braking performance can be ensured by installing a retarder on part of vehicles); when the whole vehicle slides, the controller cuts off the current, the electromagnetic coil does not generate a magnetic field, the damping value of the magnetorheological fluid is extremely small, the upper half shaft and the lower half shaft have no acting force in the torsion direction, the rotation of the hub is disconnected, the main speed reducer, the transmission shaft at the upstream of the drive axle, the gear of the gearbox, the flywheel and other components do not rotate along with the hub, the energy consumption of the drive device and the friction loss of the transmission shaft, the gearbox and other follow-up components under the condition of no work are avoided, the sliding resistance and the braking resistance are reduced, the sliding distance is prolonged, the energy-saving effect is obvious, and the; when the whole vehicle outputs power to the outside, and the whole vehicle runs at a deceleration or constant speed and acceleration, the controller controls the current, so that the damping value of the magnetorheological solution is adaptive to the resistance of the whole vehicle during running, at the moment, the upstream half shaft and the downstream half shaft are connected with each other through nonlinear damping force and transmit torque, random impact excitation on the road surface is attenuated through the damping value of the solution, the impact amplitude acting on the main reducing gear can be effectively restrained, the vibration damping effect of the road surface impact excitation is realized, the running working condition of the main reducing gear is improved, the gear noise is reduced, and the comfort of the whole vehicle is improved.
Embodiment 2 of the vehicle of the invention differs from embodiment 1 in that: the upstream half shaft and the downstream half shaft can be provided with no blade, and the upstream half shaft and the downstream half shaft can realize torque transmission through the friction force of the magnetorheological solution, the inner wall surface of the jack and the outer side surface of the plug. Or one of them is provided with blades and the other is not provided with blades, etc.
Embodiment 3 of the vehicle of the invention differs from embodiment 1 in that: instead of the upstream half shaft and the downstream half shaft, as shown in fig. 9, the sealing chamber may be formed by a connecting sleeve 9 disposed between the upstream half shaft and the downstream half shaft, the upstream half shaft and the downstream half shaft respectively extend into the connecting sleeve 9 from both ends and are axially connected to the connecting sleeve 9 in a circumferentially rotatable manner, the inner cavity of the connecting sleeve forms the sealing chamber, and the extending sections of the upstream half shaft and the downstream half shaft are respectively provided with the driving blade and the driven blade.
or, as shown in fig. 10, the connection structure and the driving structure of the upstream half shaft and the downstream half shaft are separately arranged, the rotating shafts of the upstream half shaft and the downstream half shaft are axially connected in a circumferential direction and can rotate relatively, the outer peripheries of the upstream half shaft and the downstream half shaft are both provided with blades 10 in a ring shape, an annular connecting cylinder 101 which is used for arranging the blade sealing cover on the upstream half shaft and the downstream half shaft in a sleeving manner is arranged between the upstream half shaft and the downstream half shaft, the upstream half shaft and the downstream half shaft are both in sliding sealing fit with.
Embodiment 4 of the vehicle of the invention differs from embodiment 1 in that: a plug may be provided on the downstream half-shaft and a socket on the upstream half-shaft.
Embodiment 5 of the vehicle of the invention differs from embodiment 1 in that: the plug can be not in running fit with the jack through a bearing, but an annular boss is arranged on the inner wall surface of the jack, and the upper end surface of the annular boss is in sliding seal fit with the outer side surface of the plug. In this case, a sealing structure for sealing the outlet of the sealing chamber is not required to be provided between the plug and the inner wall of the socket.
Embodiment 6 of the vehicle of the invention differs from embodiment 1 in that: the bearing may be disposed inside the sealed chamber.
Embodiment 7 of the vehicle of the invention differs from embodiment 1 in that: the sealing structure between the plug and the inner wall surface of the jack can also be replaced, for example, an annular baffle table and a sealing ring are arranged on the outer side surface of the plug, and the sealing ring is in sliding sealing fit with the inner wall surface of the jack.
Embodiment 8 of the vehicle of the invention differs from embodiment 1 in that: the electromagnetic coil may also be replaced by an annular coil disposed along the outer periphery of the sealed chamber.
in addition, the electromagnetic coil is not arranged along the periphery of the sealed chamber, but is only arranged on one side of the sealed chamber, as long as the magnetic field generated by the electromagnetic coil can cover the magnetorheological solution.
Embodiment 9 of the vehicle of the invention differs from embodiment 1 in that: in a corresponding use environment, the drive axle is not provided with a main speed reducer, and at the moment, when the axis of the main input shaft is parallel to the axes of the left half shaft assembly and the right half shaft assembly, the main input shaft of the drive axle can be directly connected with the left half shaft assembly and the right half shaft assembly; when the axis of the main input shaft is not parallel to the axes of the left and right axle assemblies, the main input shaft may be connected to the left and right axle assemblies through a pair of reversing gears.
The specific structure of a drive axle according to a specific embodiment of the present invention is the same as the above-mentioned drive axle in a vehicle, and will not be described in detail herein.
the specific structure of the half axle assembly of the present invention is the same as the specific structure of the left half axle assembly or the right half axle assembly of the vehicle, and detailed description thereof is omitted.
Claims (10)
1. The utility model provides a transaxle, includes main input shaft and the left and right semi-axis subassembly of being connected with main input shaft transmission, its characterized in that: each half shaft assembly comprises an upstream half shaft in transmission connection with the main input shaft and a downstream half shaft used for being connected with the wheel hub, opposite ends of the upstream half shaft and the downstream half shaft are in transmission connection through a magnetorheological transmission structure, the magnetorheological transmission structure comprises a sealing cavity arranged between the upstream half shaft and the downstream half shaft, magnetorheological solution used for transmitting torque between the upstream half shaft and the downstream half shaft is arranged in the sealing cavity, and the magnetorheological transmission structure further comprises an electromagnetic device used for changing the magnetic field environment where the magnetorheological solution is located.
2. The transaxle of claim 1 wherein: and blades which extend along the radial direction and are used for increasing the driving surface between the upstream half shaft and the magnetorheological solution and between the downstream half shaft and the magnetorheological solution are arranged on the outer peripheral surface of the upstream half shaft and/or the downstream half shaft.
3. The transaxle of claim 1 or 2 wherein: the upstream half shaft and the downstream half shaft are coaxially arranged, the connecting end of one of the upstream half shaft and the downstream half shaft is provided with a jack, and the connecting end of the other one of the upstream half shaft and the downstream half shaft is provided with a plug which is in sealed and rotating assembly in the jack to form the sealed chamber between the upstream half shaft and the downstream half shaft.
4. The transaxle of claim 3 wherein: the plug is rotatably fitted in the socket through a bearing.
5. The transaxle of claim 4 wherein: the bearing is located outside the sealed chamber.
6. The transaxle of claim 4 wherein: one of the plug and the inner wall of the jack is provided with an annular blocking platform along the radial direction, and a sealing ring is arranged between the other plug and the annular blocking platform so that the annular blocking platform and the inner wall of the jack enclose a sealing chamber.
7. The transaxle of claim 1 or 2 or 4 or 5 or 6 wherein: the input end of the main input shaft is connected with a main speed reducer, and the left half shaft assembly and the right half shaft assembly are connected with the output end of the main speed reducer and then are in transmission connection with the main input shaft.
8. The transaxle of claim 7 wherein: the left half shaft assembly and the right half shaft assembly are connected with the output end of the main speed reducer through splines.
9. The utility model provides a vehicle, includes automobile body and actuating system, actuating system includes the transmission shaft and with the transaxle of transmission shaft connection, the transaxle includes main input shaft and the left and right semi-axis subassembly of being connected with main input shaft transmission, its characterized in that: each half shaft assembly comprises an upstream half shaft in transmission connection with the main input shaft and a downstream half shaft used for being connected with the wheel hub, opposite ends of the upstream half shaft and the downstream half shaft are in transmission connection through a magnetorheological transmission structure, the magnetorheological transmission structure comprises a sealing cavity arranged between the upstream half shaft and the downstream half shaft, magnetorheological solution used for transmitting torque between the upstream half shaft and the downstream half shaft is arranged in the sealing cavity, and the magnetorheological transmission structure further comprises an electromagnetic device used for changing the magnetic field environment where the magnetorheological solution is located.
10. A half shaft assembly characterized by: the magnetorheological transmission structure comprises an upstream half shaft and a downstream half shaft, wherein the opposite ends of the upstream half shaft and the downstream half shaft are in transmission connection through a magnetorheological transmission structure, one end of the upstream half shaft, which is far away from the magnetorheological transmission structure, is provided with a connecting part which is in transmission connection with a main input shaft, one end of the downstream half shaft, which is far away from the magnetorheological transmission structure, is provided with a connecting part which is in transmission connection with a wheel hub, the magnetorheological transmission structure comprises a sealing cavity arranged between the upstream half shaft and the downstream half shaft, magnetorheological solution used for transmitting torque between the upstream half shaft and the downstream half shaft is arranged in the sealing cavity, and the magnetorheological transmission structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589944.5A CN110576705B (en) | 2018-06-08 | 2018-06-08 | Vehicle, drive axle and half shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589944.5A CN110576705B (en) | 2018-06-08 | 2018-06-08 | Vehicle, drive axle and half shaft assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110576705A true CN110576705A (en) | 2019-12-17 |
| CN110576705B CN110576705B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810589944.5A Active CN110576705B (en) | 2018-06-08 | 2018-06-08 | Vehicle, drive axle and half shaft assembly |
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| Country | Link |
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| CN (1) | CN110576705B (en) |
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| CN111591089A (en) * | 2020-05-25 | 2020-08-28 | 台州金豪车桥有限公司 | Electric tricycle axle |
| CN112046449A (en) * | 2020-09-15 | 2020-12-08 | 山东得普达电机股份有限公司 | Lightweight power assembly for new energy automobile |
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|---|---|
| CN110576705B (en) | 2021-07-23 |
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Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co., Ltd Address before: 450016 Yutong Road, Guancheng District, Zhengzhou City, Henan Province Patentee before: Zhengzhou Yutong Bus Co., Ltd |
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