CN218536323U - New forms of energy truck keeps off more and drives bridge construction - Google Patents
New forms of energy truck keeps off more and drives bridge construction Download PDFInfo
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- CN218536323U CN218536323U CN202222594224.2U CN202222594224U CN218536323U CN 218536323 U CN218536323 U CN 218536323U CN 202222594224 U CN202222594224 U CN 202222594224U CN 218536323 U CN218536323 U CN 218536323U
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Abstract
The utility model provides a new forms of energy truck keeps off more and drives bridge construction electrically, it realizes power take off by the different velocity ratios of bi-motor cooperation, and the motor fully works in the high-efficient district. It includes: two motors, specifically an EM-B motor and an EM-A motor; a set of reduction gear assemblies; a set of two-gear assemblies; the group of gear shifting planet row assemblies comprise main reduction teeth, a sun wheel shaft, a sun wheel, planet wheels, a planet carrier and high-low gear shifting assemblies, wherein the sun wheel shaft is a hollow shaft, the main reduction teeth are sleeved at the input end of the sun wheel shaft, and the sun wheel is fixedly sleeved at the output end of the sun wheel shaft; a differential mechanism; and the two half shafts are respectively a left half shaft and a right half shaft.
Description
Technical Field
The utility model relates to a technical field of transaxle structure specifically is a new forms of energy truck keeps off more and drives bridge construction electrically.
Background
The existing multi-gear electric drive bridge structure of a new energy truck has the advantages that gear modes are few, the utilization rate of a high-efficiency region of a motor is low during operation of the truck, neutral gear cannot be achieved during driving, rotation resistance of the motor cannot be eliminated, useless power loss can be caused, and the system is poor in power and low in efficiency.
The electric drive axle with partial gear shifting function has the advantages that the gear shifting part is a friction synchronizer which has low efficiency and poor reliability; some electric drive bridges without friction synchronizers have too few gear modes; the electric drive axle has a gear shifting function, does not have a friction synchronizer and comprises different gears, is complex in gear shifting and speed regulating, needs secondary speed regulating, and is long in gear shifting time, power interruption time and poor in driving feeling.
The existing double-motor new energy truck electric drive bridge product, particularly the engineering new energy truck electric drive bridge, is still provided with a wheel-side speed reducer, and has the advantages of multiple parts, large volume, complex structure and high cost.
Partial double-motor-driven bridge products are uneven in assembly mass distribution relative to the position of the half shaft, the distance between the mass center and the axle housing axis is far, and the cantilever is long, so that the stress and vibration conditions are poor.
Disclosure of Invention
In order to solve the problems, the utility model provides a new energy truck multi-gear electric drive bridge structure, which realizes power output by matching double motors with different speed ratios, the motors fully work in a high-efficiency area, single-motor neutral gear and double-motor neutral gear can be realized, the dragging resistance of the motors under partial working conditions of vehicles is reduced, and the system has strong power and high efficiency; the number of parts is small, the volume is small, the structure is compact, the whole vehicle arrangement is simple, and the cost is low; the barycenter is close to axle housing axis, and the cantilever is short, has greatly improved the atress and the vibration condition.
The utility model provides a new forms of energy truck keeps off more electric bridge construction, its characterized in that, it includes:
two motors, specifically an EM-B motor and an EM-A motor;
a set of reduction gear assemblies;
a set of two-speed gear assemblies;
the group of gear shifting planet row assemblies comprise main reduction teeth, a sun wheel shaft, a sun wheel, a planet carrier and a high-low gear shifting assembly, wherein the sun wheel shaft is a hollow shaft, the main reduction teeth are sleeved at the input end of the sun wheel shaft, and the sun wheel is fixedly sleeved at the output end of the sun wheel shaft;
a differential mechanism;
the two half shafts are respectively a left half shaft and a right half shaft;
the output end of the EM-B motor is connected with the input teeth of the reduction gear assembly, the output teeth of the reduction gear assembly are meshed with the main reduction teeth, a planet carrier is fixedly arranged on a shell of the differential, a plurality of planet wheels are annularly distributed at the positions, close to corresponding half shafts, of the planet carrier, an inner gear ring is annularly distributed on the periphery of an outer ring of each planet wheel, the planet wheels are respectively meshed with the inner gear ring and the sun wheel through gears, and the sun wheel is sleeved on one half shaft;
the gear shifting planet row assembly is coaxially arranged with the half shaft;
the high-low gear shifting assembly comprises an inner gear ring gear hub, a high-low gear shifting sliding sleeve, fixed combination teeth and planet carrier combination teeth, and the inner gear ring gear hub is arranged between the fixed combination teeth and the planet carrier combination teeth; the fixed combination teeth are fixedly connected with the electric drive axle housing and arranged towards the gear hub of the inner gear ring; the end part of the planet carrier, far away from the differential mechanism, is provided with planet carrier combination teeth and is arranged towards an inner gear ring gear hub, and the high-low gear shifting sliding sleeve moves axially to switch high and low gears;
the output end of the EM-A motor is connected with input teeth of a two-gear assembly, the two-gear assembly comprises a shifting sliding sleeve, output teeth of the two-gear assembly are meshed with main reducing teeth, and the shifting sliding sleeve is used for performing two-gear and neutral gear switching operation;
the two motors are arranged in parallel and are arranged on the front side and the rear side of the half shaft.
It is further characterized in that:
the two motors are respectively arranged at two sides of an axial region between the corresponding main reducing gear and the sun gear, so that the mass center of the whole structure is relatively close to the differential mechanism;
the two-gear assembly comprises an A-side input shaft, an A-side input tooth, an A-side primary driven tooth, an A-side intermediate shaft, a first-gear driving tooth, a second-gear driving tooth, an A-side output shaft, a first-gear driven tooth, a first-gear combining tooth, a second-gear driven tooth, a second-gear combining tooth, a second-gear hub, a second-gear shifting sliding sleeve and an A-side tertiary driving tooth;
the right end of the input shaft at the side A is fixedly connected with the EM-A motor, and the left end of the input shaft at the side A is fixedly connected with the input teeth at the side A; the right end of the intermediate shaft at the side A is fixedly connected with the driving tooth at the first gear at the side A, the left end of the intermediate shaft at the side A is fixedly connected with the driven tooth at the first gear at the side A, and the middle of the intermediate shaft at the side A is fixedly connected with the driving tooth at the second gear at the side A; the right end of the output shaft at the side A is provided with a first-gear driven tooth, the left end of the output shaft at the side A is fixedly connected with the third-stage driving tooth at the side A, and the middle of the output shaft at the side A is provided with a second-gear driven tooth; the first gear driven tooth and the second gear driven tooth are respectively sleeved on the A-side output shaft in a hollow manner through bearings; a second gear hub is fixedly connected with the output shaft at the side A and is arranged between the first gear driven tooth and the second gear driven tooth; the first gear combination teeth are fixedly connected with the first gear driven teeth and face the first gear hub; the second-gear combination teeth are fixedly connected with the second-gear driven teeth and face the first-gear hub; the outer periphery of the first-gear hub and the second-gear hub is provided with an external spline, the inner periphery of the first-gear shifting sliding sleeve and the second-gear shifting sliding sleeve is provided with an internal spline, the first-gear shifting sliding sleeve and the second-gear shifting sliding sleeve are sleeved on the first-gear hub through splines and can axially slide on the first-gear hub and the second-gear hub; the input tooth at the side A is in meshed connection with the primary driven tooth at the side A, the first-gear driving tooth is in meshed connection with the first-gear driven tooth, and the second-gear driving tooth is in meshed connection with the second-gear driven tooth;
the reduction gear assembly comprises a B-side input shaft, B-side input teeth, B-side primary driven teeth, a B-side intermediate shaft and B-side secondary driving teeth; the right end of the B-side input shaft is fixedly connected with the EM-B motor, and the left end of the B-side input shaft is fixedly connected with the B-side input teeth; the right end of the B-side intermediate shaft is fixedly connected with the B-side primary driven gear; the left end is fixedly connected with the B-side secondary driving tooth; the B-side input teeth are meshed and connected with the B-side primary driven teeth;
the inner spline on the high-low gear shifting sliding sleeve is matched with the inner spline on the inner gear ring gear hub and can axially slide on the high-low gear shifting sliding sleeve, and the inner spline on the high-low gear shifting sliding sleeve can be in spline connection with the outer spline on the fixed combination gear or the outer spline on the planet carrier combination gear through sliding;
the main reducing gear is meshed with the B-side secondary driving gear, and the main reducing gear is meshed with the A-side tertiary driving gear.
After the utility model is adopted, the double motors are matched with different speed ratios to realize power output, the motors fully work in a high-efficiency area, single-motor neutral gear and double-motor neutral gear can be realized, the drag resistance of the motors under partial working conditions of the vehicle is reduced, and the system has strong power and high efficiency; the friction-free mechanical gear shifting is adopted, the gear shifting speed is simple, the gear shifting time is short, the reliability is high, the efficiency is high, the power interruption time is short, and the driving feeling is good; the planetary row assembly is connected with the differential mechanism to realize power output, the planetary row and the differential mechanism are coaxially arranged, the output power of the differential mechanism is directly connected to wheels through a half shaft, and the planetary row assembly has no wheel-side speed reducer, few parts, small volume, compact structure, simple whole vehicle arrangement and low cost; two motors are distributed on the front side and the rear side of the bridge, the planet row assemblies and the bridge are coaxially arranged, the electric drive bridge is reasonable in mass distribution, the mass center is close to the axle shaft of the axle housing, the cantilever is short, and the stress and the vibration condition are greatly improved.
Drawings
FIG. 1 is a schematic view of the structural framework of the present invention;
the names corresponding to the numbers in the figure are as follows:
the gear shifting device comprises a B-side input gear 1, a B-side input shaft 2, an EM-B motor 3, a fixed combination gear 4, a high-low gear shifting sliding sleeve 5, an inner gear hub 6, a planet carrier combination gear 7, an inner gear 8, a planet gear 9, a sun gear 10, a planet carrier 11, a differential 12, a right half shaft 13, a first-second gear shifting sliding sleeve 14, a first-second gear hub 15, a first-second gear combination gear 16, a second-second gear combination gear 17, a first-second gear driven gear 18, an EM-A motor 19, a first-second gear driving gear 20, a second-second gear driving gear 21, an A-side input gear 22, an A-side input shaft 23, an A-side intermediate shaft 24, an A-side first-stage driven gear 25, an A-side output shaft 26, an A-side third-stage driving gear 27, a second-second driven gear 28, a left half shaft 29, a sun gear shaft 30, a main reduction gear 31, a B-side intermediate shaft 32, a B-side second-stage driving gear 33 and a B-side first-stage driven gear 34.
Detailed Description
A new energy truck multi-gear electric drive axle structure, see fig. 1, which includes:
the two motors, a group of reduction gear assemblies, a group of two-gear assemblies, a group of shifting planet row assemblies, a differential mechanism 12 and two half shafts;
the two motors are specifically an EM-B motor 3 and an EM-A motor 19;
the group of gear shifting planet row components comprise main reduction teeth 31, a sun gear shaft 30, a sun gear 10, planet gears 9, a planet carrier 11, an inner gear ring 8 and high-low gear shifting components, wherein the sun gear shaft 30 is a hollow shaft, the main reduction teeth 31 are sleeved at the input end of the sun gear shaft 30, and the sun gear 10 is fixedly sleeved at the output end of the sun gear shaft 30;
the output end of the EM-B motor 3 is connected with input teeth of a reduction gear assembly, the output teeth of the reduction gear assembly are meshed with main reduction teeth 31, a planet carrier 11 is fixedly arranged on a shell of the differential mechanism 12, a plurality of planet wheels 9 are annularly distributed on the planet carrier 11 close to corresponding half shafts, inner gear rings 8 are annularly distributed on the outer ring circumference of the planet wheels 9, the planet wheels 9 are respectively meshed with the inner gear rings 8 and the sun wheel 10 through gears, and the sun wheel is sleeved on one of the half shafts;
the gear shifting planet row component is coaxially arranged with the half shaft;
the high-low gear shifting assembly comprises an inner gear ring gear hub 6, a high-low gear shifting sliding sleeve 5, a fixed combination gear 4 and a planet carrier combination gear 7, wherein the inner gear ring gear hub 6 is arranged between the fixed combination gear 4 and the planet carrier combination gear 7; the fixed combination teeth 7 are fixedly connected with the electric drive axle housing and are arranged towards the inner gear ring gear hub 6; the end part of the planet carrier 11 far away from the differential 12 is provided with planet carrier combination teeth 7 which are arranged towards an inner gear ring gear hub 6, and the high-low gear shifting sliding sleeve 5 moves axially to switch high and low gears;
the output end of the EM-A motor 19 is connected with the input teeth of a two-gear assembly, the two-gear assembly comprises a shifting sliding sleeve, the output teeth of the two-gear assembly are meshed with the main reducing teeth 31, and the shifting sliding sleeve is used for performing two-gear and neutral gear switching operation;
the two motors are arranged in parallel and are arranged on the front side and the rear side of the half shaft.
In the specific implementation:
the reduction gear assembly and the two-gear assembly are arranged in parallel and are arranged on the front side and the rear side of the half shaft;
the reduction gear assembly specifically comprises a B-side input shaft 2, a B-side input tooth 1, a B-side primary driven tooth 33, a B-side intermediate shaft 32 and a B-side secondary driving tooth 33; the right end of the B-side input shaft 2 is fixedly connected with the EM-B motor 3, and the left end of the B-side input shaft is fixedly connected with the B-side input gear 1; the right end of the B side intermediate shaft 32 is fixedly connected with a B side primary driven tooth 33; the left end is fixedly connected with the B-side secondary driving tooth 33; the B-side input teeth 1 are meshed with the B-side primary driven teeth 33;
the two-gear assembly specifically comprises an A-side input shaft 23, an A-side input tooth 22, an A-side first-stage driven tooth 25, an A-side intermediate shaft 24, a first-gear driving tooth 20, a second-gear driving tooth 21, an A-side output shaft 26, a first-gear driven tooth 18, a first-gear combining tooth 16, a second-gear driven tooth 28, a second-gear combining tooth 17, a second-gear hub 15, a second-gear shifting sliding sleeve and an A-side third-stage driving tooth 27;
the right end of the A-side input shaft 23 is fixedly connected with the EM-A motor 19, and the left end of the A-side input shaft is fixedly connected with the A-side input teeth 22; the right end of the A side intermediate shaft 24 is fixedly connected with the A side first gear driving tooth 20, the left end of the A side intermediate shaft is fixedly connected with the A side first gear driven tooth 25, and the middle of the A side second gear driving tooth 21 is fixedly connected with the middle of the A side intermediate shaft;
the right end of the A-side output shaft 26 is provided with a first-gear driven tooth 18, the left end of the A-side output shaft is fixedly connected with a third-stage driving tooth 27, and a second-gear driven tooth 28 is arranged in the middle of the A-side output shaft; the first gear driven tooth 18 and the second gear driven tooth 28 are respectively sleeved on the A-side output shaft 26 through bearings in an idle mode;
a second gear hub 15 is fixedly connected with the output shaft 26 at the side A and is arranged between the first gear driven tooth 18 and the second gear driven tooth 28; the first gear combination tooth 16 is fixedly connected with the first gear driven tooth 18 and faces the first second gear hub 15; the second-gear combining teeth 17 are fixedly connected with the second-gear driven teeth 28 and face the first-gear hub 15; the outer periphery of the first-gear hub 15 is provided with external splines, the inner periphery of the first-gear shifting sliding sleeve and the second-gear shifting sliding sleeve is provided with internal splines, the first-gear shifting sliding sleeve and the second-gear shifting sliding sleeve are sleeved on the first-gear hub 15 through the splines, and the first-gear shifting sliding sleeve and the second-gear shifting sliding sleeve can axially slide on the first-gear hub 15 and the second-gear hub 15;
the A-side input teeth 22 are meshed with the A-side primary driven teeth 25, the first-gear driving teeth 20 are meshed with the first-gear driven teeth 18, and the second-gear driving teeth 21 are meshed with the second-gear driven teeth 28;
the gear shifting planet row component specifically comprises a main reduction gear 31, a sun gear shaft 30, a sun gear 10, a planet gear 9, a planet carrier 11 and a high-low gear shifting component, wherein the planet gear 9 is sleeved on a planet shaft on the planet carrier 11 through a bearing, and the planet gear 9 is respectively connected with an inner gear ring 8 and the sun gear 10 through gear engagement; the sun wheel shaft 30 is hollow, the right end is fixedly connected with the sun wheel 10, and the left end is fixedly connected with the main reducing tooth 31;
the high-low gear shifting component specifically comprises an inner gear ring gear hub 6, a high-low gear shifting sliding sleeve 5, fixed combination teeth 4 and planet carrier 11 combination teeth 7; the ring gear 8 and the hub 6 are arranged between the fixed combination teeth 4 and the planet carrier combination teeth 7; the fixed combination teeth 4 are fixedly connected with the electric drive axle housing and are arranged towards the inner gear ring gear hub 6; the planet carrier combination teeth 7 are fixedly connected with a planet carrier 11 and are arranged towards the inner gear ring gear hub 6; an internal spline is arranged in the inner gear ring gear hub 6, an external spline is arranged on the fixed combination gear 4, an external spline is arranged on the planet carrier combination gear 7, splines are evenly distributed on the inner side and the outer side of the high-low gear shifting sliding sleeve 5, the external spline on the high-low gear shifting sliding sleeve 5 is matched with the internal spline on the inner gear ring gear hub 6 and can axially slide on the high-low gear shifting sliding sleeve, and through sliding, the internal spline on the high-low gear shifting sliding sleeve 5 can be in splined connection with the external spline on the fixed combination gear 4 or the external spline on the planet carrier combination gear 7;
the main reducing gear 31 is meshed with the B-side secondary driving gear, and the main reducing gear 31 is meshed with the A-side tertiary driving gear 27;
the differential case is fixedly connected with the planet carrier 11;
the right end of the left half shaft 29 passes through a hollow sun gear shaft 30 and is connected with the inside of the differential mechanism 12 through a spline, and the left end of the right half shaft 13 passes through a spline and is connected with the inside of the differential mechanism 12; the left end of the left half shaft 29 and the right end of the right half shaft 13 are directly connected with wheels.
In particular implementation, the two electric motors are respectively arranged in the axial side regions between the corresponding main reduction teeth 31 and the sun gear 10, so that the whole structural mass center is relatively close to the differential 12.
The working principle is as follows:
two motors cooperate the removal of the sliding sleeve of shifting that keeps off one or two and high-low gear sliding sleeve to shift, can realize that different gear drive combinations use, the multi-gear mode of further different velocity ratios.
Through the use of single and double motors, the gear engagement of the first-gear and second-gear shifting sliding sleeve 14 and the sliding gear engagement of the high-low gear shifting sliding sleeve 5, various different working modes are realized, the power transmission principles of the different working modes are similar, and the gear shifting and power transmission principles and advantages are explained by taking the following three working modes as examples.
The first working mode is a high-torque mode, when the first working mode works, the double motors are both involved in driving, the first-gear and second-gear shifting sliding sleeves 14 slide rightwards, and the first-gear and second-gear hubs 15 are connected with the same-gear combination teeth 16 through splines to realize first gear; and the high-low gear shifting sliding sleeve 5 slides leftwards, and the inner gear ring gear hub 6 is connected with the fixed combination gear 4 through a spline, so that the inner gear ring 8 is fixed and low gear is realized.
Firstly, an EM-A motor 19 serves as a power source to drive an A-side input shaft 23 and an A-side input tooth 22 to rotate, the A-side input tooth 22 continues to transmit power to an A-side primary driven tooth 25 through meshing connection, the A-side intermediate shaft 24 and a primary driving tooth 20 fixedly connected with the A-side intermediate shaft are further driven to rotate, the primary driving tooth 20 drives a primary driven tooth 18 to rotate through meshing connection, a primary combining tooth 16, a secondary shifting sliding sleeve 14 and a secondary gear hub 15 are further driven to rotate, power is transmitted to an A-side output shaft 26 and an A-side tertiary driving tooth 27 fixedly connected with the A-side output shaft, and the A-side tertiary driving tooth 27 transmits rotary power to a main reducing tooth 31 through meshing connection;
meanwhile, the EM-B motor 3 is used as a power source to drive the B-side input shaft 2 and the B-side input gear 1 to rotate, the B-side input gear 1 continuously transmits power to the B-side primary driven gear 34 through meshing connection, the B-side intermediate shaft 32 and a B-side secondary driving gear 33 fixedly connected with the B-side intermediate shaft are further driven to rotate, and the B-side secondary driving gear 33 further transmits the rotating power to the driving reduction gear 31 through meshing connection;
at the moment, the power of the EM-B motor 3 and the power of the EM-A motor 19 are coupled on the main reduction gear 31, the power which is gathered together continuously transmits the power to the sun gear 10 through the front row sun gear shaft 30, the planetary gear 9 is driven to rotate and revolve around the sun gear 10 through gear meshing, the gear ring is fixed at the moment, the planetary carrier 11 is driven to rotate in a speed reduction manner, and finally, the power is directly transmitted to the wheels through the left half shaft and the right half shaft through the differential 12 fixedly connected with the planetary carrier 11, so that the power flow transmission in the working mode is completed;
in the process, the initial torque of the motor EM-B is amplified by the reduction gear set and the gear shifting planetary row and then transmitted to wheels, so that the speed reduction and torque increase are realized; the initial torque of the motor EM-A is amplified by the two-gear set and the gear shifting planetary row and then transmitted to wheels, so that the speed reduction and torque increase are realized; the two motors work simultaneously, the torque is superposed, and large-torque output is realized.
The second working mode is a low-torque single-motor working mode, and one state is taken as an example for explanation, when the planetary gear transmission device works, only the EM-B motor 3 participates in driving, the high-low gear shifting sliding sleeve 5 slides rightwards, and the inner gear ring gear hub 6 is connected with the planet carrier combining teeth 7 through the splines, so that the inner gear ring 8 is fixedly connected with the planet carrier 11; meanwhile, the first-gear and second-gear shifting sliding sleeve 14 does not act on the first-gear and second-gear hub 15, is in a neutral gear state and is not connected with the combination gear all the time;
the EM-B motor 3 is used as a power source to drive the B-side input shaft 2 and the B-side input gear 1 to rotate, the B-side input gear 1 continuously transmits power to the B-side primary driven gear 34 through meshing connection, the B-side intermediate shaft 32 and a B-side secondary driving gear 33 fixedly connected with the B-side intermediate shaft are further driven to rotate, and the B-side secondary driving gear 33 further transmits the rotating power to the main reduction gear 31 through meshing connection; the main reducing gear 31 continuously transmits power to the sun gear 10 through the front row sun gear shaft 30, drives the planet gear 9 to rotate and revolve around the sun gear 10 through gear meshing, at the moment, the inner gear ring 8 is fixedly connected with the planet carrier 11, further drives the planet carrier 11 to rotate at the same rotating speed as the sun gear 10, and finally, the power is directly transmitted to the wheel through the differential 12 fixedly connected with the planet carrier 11 through the left half shaft and the right half shaft, so that the transmission of power flow in the second working mode is completed;
in the process, the first-gear and second-gear shifting sliding sleeve 14 is kept in a neutral gear state, the EM-A motor 19 is disconnected with the driving system, and drag resistance is not formed all the time;
the third working mode is a neutral gear sliding working condition of the vehicle, and at the moment, the high-low gear shifting sliding sleeve 5 does not act on the internal gear ring gear hub 6 and is in a neutral gear state and is not connected with the combination teeth all the time; at the moment, the shifting planetary gear row loses the power transmission effect, the EM-B motor 3 and the reduction gear set, and the EM-A motor 19 and the two gear set are disconnected with the driving system, and the dragging resistance is not formed all the time.
In addition, when the first-gear shifting sliding sleeve 14 and the second-gear shifting sliding sleeve 5 slide and shift gears, no friction part and no friction damage are needed, and only the speed regulation and the gear shifting of the motor are needed; in addition, under partial working conditions, when the first-gear shifting sliding sleeve 14 and the second-gear shifting sliding sleeve 5 are required to shift gears, secondary speed regulation is not required in the high-low gear shifting process, and the speed regulation process can be simultaneously carried out when the first-gear shifting sliding sleeve 14 and the low-gear shifting sliding sleeve 5 slide and shift gears; examples are as follows: the initial state is that the first-gear shifting sliding sleeve 14 is in the second-gear position sliding to the left, and the high-low gear shifting sliding sleeve 5 is in the low-gear position sliding to the left. When both the two shift gears are required to be shifted, firstly, the two-gear shifting sliding sleeve 14 slides rightwards to a neutral position, and meanwhile, the high-low gear shifting sliding sleeve 5 slides rightwards to the neutral position; then the speed regulation and the gear shifting are carried out simultaneously, the rotating speed of the same gear combining tooth 16 of the first and second gear shifting sliding sleeves 14 is driven to be within the designed speed difference range through the speed regulation of the EM-A motor 19, the right sliding is carried out to connect the same gear combining tooth 16 of the first and second gear shifting sliding sleeves 14, and the first gear is engaged; in synchronization with the above, the speed regulation of the EM-B motor 3 enables the rotating speed of the high-low gear shifting sliding sleeve 5 and the planet carrier combining teeth 7 to approach within the designed speed difference range, and the high-low gear shifting sliding sleeve 5 and the planet carrier combining teeth 7 are connected by sliding to the right, so that the high gear is engaged; in the process, two gear shifting pieces can be used for simultaneously regulating the speed and shifting gears without secondary speed regulation, so that the gear shifting time is shortened.
According to the multi-gear electric drive bridge structure of the new energy truck, the double motors are matched with different speed ratios to realize power output, the motors fully work in a high-efficiency area, single-motor neutral gear and double-motor neutral gear can be realized, the dragging resistance of the motors under partial working conditions of a vehicle is reduced, and the system is strong in power and high in efficiency;
the friction-free mechanical gear shifting is adopted, the gear shifting speed is simple, the gear shifting time is short, the reliability is high, the efficiency is high, the power interruption time is short, and the driving feeling is good;
the planetary row assembly is connected with the differential mechanism to realize power output, the planetary row and the differential mechanism are coaxially arranged, the output power of the differential mechanism is directly connected to wheels through a half shaft, and the planetary row assembly has no wheel-side speed reducer, few parts, small volume, compact structure, simple whole vehicle arrangement and low cost;
two motors distribute both sides around the bridge, and the planet is arranged subassembly and the coaxial arrangement of bridge, and it is reasonable to drive bridge mass distribution, and the barycenter is close to the axle housing axis, and the cantilever is short, has greatly improved the atress and the vibration condition.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a new forms of energy truck keeps off more and drives bridge construction, its characterized in that, it includes:
two motors, namely an EM-B motor and an EM-A motor;
a set of reduction gear assemblies;
a set of two-speed gear assemblies;
the group of gear shifting planet row assemblies comprise main reduction teeth, a sun wheel shaft, a sun wheel, a planet carrier and a high-low gear shifting assembly, wherein the sun wheel shaft is a hollow shaft, the main reduction teeth are sleeved at the input end of the sun wheel shaft, and the sun wheel is fixedly sleeved at the output end of the sun wheel shaft;
a differential mechanism;
the two half shafts are respectively a left half shaft and a right half shaft;
the output end of the EM-B motor is connected with the input teeth of the reduction gear assembly, the output teeth of the reduction gear assembly are meshed with the main reduction teeth, a planet carrier is fixedly arranged on a shell of the differential, a plurality of planet wheels are annularly distributed at the positions, close to corresponding half shafts, of the planet carrier, an inner gear ring is annularly distributed on the periphery of an outer ring of each planet wheel, the planet wheels are respectively meshed with the inner gear ring and the sun wheel through gears, and the sun wheel is sleeved on one half shaft;
the gear shifting planet row assembly is coaxially arranged with the half shaft;
the high-low gear shifting assembly comprises an inner gear ring gear hub, a high-low gear shifting sliding sleeve, fixed combination teeth and planet carrier combination teeth, and the inner gear ring gear hub is arranged between the fixed combination teeth and the planet carrier combination teeth; the fixed combination teeth are fixedly connected with the electric drive axle housing and arranged towards the gear hub of the inner gear ring; the end part, far away from the differential, of the planet carrier is provided with planet carrier combination teeth which are arranged towards an inner gear ring gear hub, and the high-low gear shifting sliding sleeve moves axially to switch high and low gears;
the output end of the EM-A motor is connected with input teeth of a two-gear assembly, the two-gear assembly comprises a shifting sliding sleeve, output teeth of the two-gear assembly are meshed with main reducing teeth, and the shifting sliding sleeve is used for performing two-gear and neutral gear switching operation;
the two motors are arranged in parallel and are arranged on the front side and the rear side of the half shaft.
2. The new energy truck multiple-gear electric drive axle structure as claimed in claim 1, characterized in that: the two motors are respectively arranged at two sides of the axial region between the corresponding main reducing gear and the sun gear.
3. The multi-gear electric drive bridge structure of the new energy truck as claimed in claim 1, wherein: the two-gear assembly comprises an A-side input shaft, an A-side input tooth, an A-side first-level driven tooth, an A-side intermediate shaft, a first-gear driving tooth, a second-gear driving tooth, an A-side output shaft, a first-gear driven tooth, a first-gear combining tooth, a second-gear driven tooth, a second-gear combining tooth, a second-gear hub, a second-gear shifting sliding sleeve and an A-side third-level driving tooth.
4. The multi-gear electric drive bridge structure of the new energy truck as claimed in claim 3, characterized in that: the right end of the input shaft at the side A is fixedly connected with the EM-A motor, and the left end of the input shaft at the side A is fixedly connected with the input teeth at the side A; the right end of the intermediate shaft at the side A is fixedly connected with the driving tooth at the first gear at the side A, the left end of the intermediate shaft at the side A is fixedly connected with the driven tooth at the first gear at the side A, and the middle of the intermediate shaft at the side A is fixedly connected with the driving tooth at the second gear at the side A; the right end of the output shaft at the side A is provided with a first-gear driven tooth, the left end of the output shaft at the side A is fixedly connected with the third-stage driving tooth at the side A, and the middle of the output shaft at the side A is provided with a second-gear driven tooth; the first gear driven tooth and the second gear driven tooth are respectively sleeved on the A-side output shaft in a hollow manner through bearings; a second gear hub is fixedly connected with the output shaft at the side A and is arranged between the first gear driven tooth and the second gear driven tooth; the first gear combination teeth are fixedly connected with the first gear driven teeth and face the first gear hub; the second-gear combination teeth are fixedly connected with the second-gear driven teeth and face the first-gear hub; the outer periphery of the first-gear hub and the second-gear hub is provided with an external spline, the inner periphery of the first-gear shifting sliding sleeve and the second-gear shifting sliding sleeve is provided with an internal spline, the first-gear and second-gear shifting sliding sleeves are sleeved on the first-gear and second-gear hubs through splines and can axially slide on the first-gear and second-gear hubs; the side A input teeth are meshed with the side A primary driven teeth, the first gear driving teeth are meshed with the first gear driven teeth, and the second gear driving teeth are meshed with the second gear driven teeth.
5. The multi-gear electric drive bridge structure of the new energy truck as claimed in claim 4, wherein: the reduction gear assembly comprises a B-side input shaft, B-side input teeth, B-side primary driven teeth, a B-side intermediate shaft and B-side secondary driving teeth; the right end of the B-side input shaft is fixedly connected with the EM-B motor, and the left end of the B-side input shaft is fixedly connected with the B-side input teeth; the right end of the B-side intermediate shaft is fixedly connected with the B-side primary driven gear; the left end is fixedly connected with the B-side secondary driving tooth; and the B-side input teeth are meshed and connected with the B-side primary driven teeth.
6. The multi-gear electric drive bridge structure of the new energy truck as claimed in claim 1, wherein: the gear shifting device comprises a gear shifting sleeve, a planetary carrier, a high-low gear shifting sliding sleeve and a fixed combination gear, wherein an inner spline is arranged in the gear shifting sleeve of the inner gear, an outer spline is arranged on the fixed combination gear, an outer spline is arranged on the combined gear of the planetary carrier, splines are evenly distributed on the inner side and the outer side of the high-low gear shifting sliding sleeve, the outer spline on the high-low gear shifting sliding sleeve is matched with the inner spline on the gear shifting hub of the inner gear and can axially slide on the gear shifting sliding sleeve, and through sliding, the inner spline on the high-low gear shifting sliding sleeve can be in splined connection with the outer spline on the fixed combination gear or the outer spline on the combined gear of the planetary carrier.
7. The multi-gear electric drive bridge structure of the new energy truck as claimed in claim 5, wherein: the main reducing teeth are meshed and connected with the B-side secondary driving teeth, and the main reducing teeth are meshed and connected with the A-side tertiary driving teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222594224.2U CN218536323U (en) | 2022-09-29 | 2022-09-29 | New forms of energy truck keeps off more and drives bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222594224.2U CN218536323U (en) | 2022-09-29 | 2022-09-29 | New forms of energy truck keeps off more and drives bridge construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218536323U true CN218536323U (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222594224.2U Active CN218536323U (en) | 2022-09-29 | 2022-09-29 | New forms of energy truck keeps off more and drives bridge construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218536323U (en) |
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2022
- 2022-09-29 CN CN202222594224.2U patent/CN218536323U/en active Active
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