CN116872715A - Driving system of electric mine car - Google Patents

Driving system of electric mine car Download PDF

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Publication number
CN116872715A
CN116872715A CN202310866040.3A CN202310866040A CN116872715A CN 116872715 A CN116872715 A CN 116872715A CN 202310866040 A CN202310866040 A CN 202310866040A CN 116872715 A CN116872715 A CN 116872715A
Authority
CN
China
Prior art keywords
motor
speed reduction
driving
assembly
wheel assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310866040.3A
Other languages
Chinese (zh)
Inventor
郝庆军
许人义
王鹤
徐啸天
王琳
陆中华
李园农
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Capotech Suzhou Co ltd
Original Assignee
Capotech Suzhou Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Capotech Suzhou Co ltd filed Critical Capotech Suzhou Co ltd
Priority to CN202310866040.3A priority Critical patent/CN116872715A/en
Publication of CN116872715A publication Critical patent/CN116872715A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention provides a driving system of an electric mine car, which comprises a left driving wheel assembly, a right driving wheel assembly, a left speed reduction assembly, a right speed reduction assembly, a bridge shaft and wheels, wherein the left driving wheel assembly is connected with the right driving wheel assembly; the output end of the left driving wheel assembly is connected with the input end of the left speed reduction assembly, the output end of the right driving wheel assembly is connected with the input end of the right speed reduction assembly, and the output ends of the left speed reduction assembly and the right speed reduction assembly are connected with wheels; the left driving wheel assembly and the right driving wheel assembly are symmetrically arranged on two sides of the axle shaft, and the left speed reduction assembly and the right speed reduction assembly are symmetrically arranged on two sides of the axle shaft; the method is characterized in that: the left driving system and the right driving system comprise a plurality of driving motors (EM), and the output shafts of the driving motors are uniformly distributed on the periphery of the circle center of the wheel; the mining truck replaces mechanical transmission, the transmission efficiency is high, the fuel cost is reduced, the multi-gear gearbox structure which is necessary for the pure electric mining wide body vehicle is avoided, the maintenance cost is lower, and the reliability is higher.

Description

Driving system of electric mine car
Technical Field
The invention relates to the technical field of mining truck electric drive systems, in particular to an electric mine car drive system.
Background
Along with the requirements of ecological civilization construction, the construction of green mines has become a main melody of mineral development in China. In this context, new energy for heavy duty mining cards faces new opportunities and challenges. As an indispensable transport means in mining, the problems of energy consumption and emission of heavy-duty mining cards have been the focus of industry attention. The traditional diesel oil mine card not only consumes a large amount of fuel resources, but also generates a large amount of pollutants such as carbon dioxide, particulate matters and the like, and causes serious damage to the environment. And the new energy ore card can reduce environmental pollution by adopting clean energy such as electric power, methanol and the like, and simultaneously improve the transportation efficiency and save the operation cost.
At present, the domestic new energy mine card mainly replaces the engine of the diesel wide mine card with a driving motor, but the speed change system and the transmission system are still similar to the diesel power wide mine card, so the load of the wide mine card is still limited and cannot reach more than 150 tons.
On the other hand, to increase the load of the bulk-ore card, greater power performance is required. One approach is to increase the size of the motor, but this increases the mass and volume of the motor and may require redesigning the entire system to ensure compatibility with other components; another approach is to increase the input voltage or current of the motor, but this may increase the power consumption and heating value of the motor.
Therefore, there is an urgent need to provide a high power driving system and a high load capacity new energy ore card driving system suitable for new energy ore cards to promote the development of green mines.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides an electric mine car driving system.
The technical scheme provided by the invention is as follows:
compared with the prior art, the invention has the following beneficial effects:
1) The invention provides an electric mine car driving system, which replaces a mechanical transmission mining truck, has high transmission efficiency, reduces fuel cost, avoids a multi-gear gearbox structure which is necessary for a pure electric mining wide body car, and has lower maintenance cost and higher reliability.
2) Compared with the traditional central arrangement and oil-to-electricity scheme, the wheel side driving system provided by the invention omits the transmission shaft, the differential mechanism and other parts, shortens the transmission chain, has a compact structure, greatly improves the transmission efficiency of the power transmission chain while improving the utilization rate of the space in the vehicle body, can improve the power performance and the energy-saving effect of the vehicle, and realizes the new energy generation of the high-load mining truck.
3) The invention provides an electric mine car driving system, which meets the requirements of mines on the power performance of mining trucks, improves the transmission efficiency, improves the reliability, reduces the maintenance cost, has simple structural arrangement and strong expansion capability, and can expand the vehicle-mounted weight capability of mining wide bodies to 260 tons.
4) The invention provides an electric mine car driving system, which adopts a high-speed motor, and has the advantages of high power density of the motor, much smaller volume than a common motor due to high rotating speed, contribution to arrangement and capability of providing larger rated power so as to ensure the dynamic property of a mine car.
5) The invention provides an electric mine car driving system, which is characterized in that an independent braking structure is added on each high-speed motor, so that the safety of the electric mine car driving system can be improved. The braking structure can enable the motor to stop running rapidly when the motor fails, so that accidents are avoided. Meanwhile, the braking structure can play a role in protecting the motor in the running process, and abnormal conditions such as overload are avoided.
Drawings
FIG. 1 is a schematic view of a three motor configuration of the electric mining vehicle drive system of the present invention.
FIG. 2 is a schematic diagram of a four motor configuration of the electric mining vehicle drive system of the present invention.
FIG. 3 is a schematic view of a six motor configuration of the electric mining vehicle drive system of the present invention.
Fig. 4 is a schematic structural view of a bus device in the present invention.
Fig. 5 is a structural perspective view of the confluence device in the present invention.
Fig. 6 is a schematic structural view of a driving mechanism in the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
First embodiment
The first embodiment of the invention provides an electric mine car driving system, which comprises a left driving wheel assembly, a right driving wheel assembly, a left speed reduction assembly, a right speed reduction assembly, a bridge shaft and wheels;
the output end of the left driving wheel assembly is connected with the input end of the left speed reduction assembly, the output end of the right driving wheel assembly is connected with the input end of the right speed reduction assembly, and the output ends of the left and right speed reduction assemblies are connected with wheels;
the left driving wheel assembly and the right driving wheel assembly are symmetrically arranged at two sides of the axle shaft, and the left speed reduction assembly and the right speed reduction assembly are symmetrically arranged at two sides of the axle shaft; the driving power is respectively transmitted to the left wheel after passing through the left driving wheel assembly and the left speed reduction assembly, and is transmitted to the right wheel after passing through the right driving wheel assembly and the right speed reduction assembly, so that the whole vehicle is driven to run.
In this embodiment, as shown in fig. 1-3, the left and right driving systems each include a plurality of driving motors EM, and output power of the plurality of motors are overlapped together and finally collected at wheel positions to realize unified output, so that the output power is improved.
According to the invention, by adopting the scheme of power superposition and confluence of the multi-drive motor, the mechanical transmission mining truck is replaced, the transmission efficiency is high, the fuel cost is reduced, the multi-gear gearbox structure which is necessary for the pure electric mining wide-body vehicle is avoided, the maintenance cost is lower, and the reliability is higher; compared with the traditional central arrangement and oil-to-electricity scheme, the wheel side driving device omits the transmission shaft, the differential mechanism and other parts, shortens the transmission chain, has compact structure, greatly improves the transmission efficiency of the power transmission chain while improving the utilization rate of the internal space of the vehicle body, can improve the power performance and the energy-saving effect of the vehicle, and realizes the new energy of the high-load mining truck.
In this embodiment, the number of driving motors EM may be determined according to actual power requirements, for example, three-motor power superposition and confluence output in fig. 1, four-motor power superposition and confluence output in fig. 2, six-motor power superposition and confluence output in fig. 3, where each driving motor EM is uniformly distributed in a circumference with a wheel as a center, so that the multi-motor power superposition and confluence output is ensured, and meanwhile, the uniform arrangement of the whole machine quality of the wheel position is realized.
The device is characterized in that a confluence device is further arranged between the plurality of driving motors and the wheels, the confluence device is shown in fig. 4-5 and comprises a motor gear G1 and a confluence gear G2 which are meshed with each other, the motor gear G1 is fixedly connected with an output shaft of the driving motor, the confluence gear G2 is fixedly connected with the wheels, output power of the plurality of driving motors is overlapped through power, and the power is transmitted to the wheels after being converged and decelerated through the confluence device, so that the heavy-duty mining truck is driven to walk.
As shown in fig. 4-5, the motor gears G1 are located in the same plane, so that the arrangement is convenient, the axial occupation space is reduced, and the meshing stability with the central confluence gear G2 can be ensured; the circle centers of the motor gears G1 are uniformly distributed on the circle with the converging gear G2 as the circle center, so that the uniform arrangement of the whole machine quality of the wheel positions can be realized while the superposition and converging output of the power of multiple motors is ensured; as the preference, the motor gear G1 and the confluence gear G2 in the embodiment are respectively helical gears, so that the meshing performance under high-speed and heavy load is improved, the stress is reduced, the service life is prolonged, and the transmission structure is more compact.
As shown in fig. 6, in the present embodiment, a braking structure is provided on each driving motor, and the safety thereof can be improved by providing an independent braking structure on each high-speed motor. The braking structure can enable the driving motor to stop running rapidly when the driving motor fails, so that accidents are avoided, and meanwhile, the braking mechanism can play a role in protecting the motor in the running process, so that abnormal conditions such as overload are avoided.
As shown in fig. 6, the braking structure in this embodiment is disposed at one end of the output shaft S of the driving motor EM, which is far away from the wheel, and the output shaft S of the driving motor EM extends out from the inside of the motor housing H, and the braking structure is disposed at one end of the output shaft S extending out from the inside of the motor housing H, so that the braking process is far away from the wheel, and damage to the rim of the wheel due to the braking process is avoided.
As shown in fig. 6, the braking structure includes a motor friction wheel F1 and a braking friction wheel F2 that are friction-fitted to each other, the motor friction wheel F1 being fixedly connected to an extended end of an output shaft S of the driving motor EM from the motor housing H, the braking friction wheel F2 being connected to the braking device. Under the action of the braking device, the braking friction wheel F2 can axially move relative to the motor friction wheel F1, the braking device drives the braking friction plate F2 to move towards the direction of the output shaft S of the motor EM, the braking friction plate F1 is contacted with the braking friction plate F2, and the braking is carried out through friction, so that each driving motor is provided with an independent braking device, and the running safety of the large-tonnage mining card is ensured.
The specific use is as follows:
when the left speed reducing assembly and the right speed reducing assembly select the two-gear AMT gearbox,
the power transmission device comprises an input shaft, an output shaft, a speed change gear and a driving motor, wherein the input shaft and the output shaft are arranged in parallel and have the same end part and are used for transmitting power; the gear change set comprises an input gear and an output gear which are meshed with each other, the input gear is fixed at one end of an input shaft, the output gear is fixed at one end of an output shaft, an output shaft of a driving motor is connected with the input shaft through a main clutch and used for driving the input shaft to rotate, a gear shift clutch is arranged on the outer side of the input gear of the input shaft or the outer side of the output gear on the output shaft, and the gear shift clutch is combined with or separated from the input gear and the output gear to finally realize the switching among neutral gear, first gear and second gear.
When the left speed reducing assembly and the right speed reducing assembly adopt the planetary gear structure gearbox,
the planetary gear is connected with a planetary gear in a meshed manner, the periphery of the planetary gear is connected with a planetary carrier, the periphery of the planetary gear is connected with a gear ring, the planetary carrier is connected with a sun gear shaft, the gear ring is connected with an output shaft, a braking system is connected with the sun gear shaft, a clutch system is arranged between the planetary carrier and the sun gear, and the braking system and the clutch system are controlled through a control system.
The control structure of the single planetary row is a two-gear gearbox with a pure electric structure, and a multi-gear gearbox can be formed by adding the control structure of the single planetary row.
The electric mining vehicle drive system may be adapted for use with 4 x 2 and 6 x 4 vehicles. For a 4 x 2 vehicle, a set of the drive system described in the above-described technical solution is used; for a 6 x 4 vehicle, two sets of the drive systems described in the above-described technical solutions can be used; to adapt the drive system to vehicles of different drive configurations.
The driving system can be suitable for electric vehicles, the electric vehicles comprise the driving system in the technical scheme, the electric vehicles can be mining wide mining cards, electric wheel mining cards or wheel loaders, and according to actual use requirements, the driving system provided by the embodiment can also be suitable for mining trucks with any load tonnage and the like.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. 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.

Claims (10)

1. An electric mine car driving system comprises a left driving wheel assembly, a right driving wheel assembly, a left speed reduction assembly, a right speed reduction assembly, a bridge shaft and wheels;
the output end of the left driving wheel assembly is connected with the input end of the left speed reduction assembly, the output end of the right driving wheel assembly is connected with the input end of the right speed reduction assembly, and the output ends of the left speed reduction assembly and the right speed reduction assembly are connected with wheels;
the left driving wheel assembly and the right driving wheel assembly are symmetrically arranged on two sides of the axle shaft, and the left speed reduction assembly and the right speed reduction assembly are symmetrically arranged on two sides of the axle shaft;
the method is characterized in that:
the left driving wheel assembly and the right driving wheel assembly respectively comprise a plurality of driving motors (EM), and the driving motors are uniformly distributed in the circumference taking the wheel as the center of a circle.
2. An electric mining vehicle driving system according to claim 1, wherein: and a confluence device is further arranged between the driving motors and the wheels and comprises motor gears (G1) and confluence gears (G2) which are meshed with each other, the motor gears (G1) are fixedly connected with output shafts of the driving motors, and the confluence gears (G2) are fixedly connected with the wheels.
3. An electric mining vehicle driving system according to claim 2, wherein: the motor gears (G1) are positioned in the same plane.
4. An electric mining vehicle driving system according to claim 2, wherein: the circle centers of the motor gears (G1) are uniformly distributed on a circle taking the converging gear (G2) as the circle center.
5. An electric mining vehicle driving system according to claim 2, wherein: the motor gear (G1) and the converging gear (G2) are bevel gears.
6. An electric mining vehicle driving system according to claim 1, wherein: and each driving motor is provided with a braking structure.
7. An electric mining vehicle driving system according to claim 6, wherein: the braking structure is arranged at one end, far away from the wheels, of an output shaft (S) of the driving motor (EM).
8. An electric mining vehicle driving system according to claim 6, wherein: the braking structure is arranged at one end of an output shaft (S) of the driving motor (EM) extending out of the motor shell (H).
9. An electric mining vehicle driving system according to claim 6, wherein: the braking structure comprises a motor friction wheel (F1) and a braking friction wheel (F2) which are in friction fit with each other, the motor friction wheel (F1) is fixedly connected to the extending end of an output shaft (S) of the driving motor (EM) from a motor shell (H), and the braking friction wheel (F2) is connected with a braking device.
10. An electric mining vehicle driving system according to claim 9, wherein: the braking friction wheel (F2) can move axially relative to the motor friction wheel (F1).
CN202310866040.3A 2023-07-14 2023-07-14 Driving system of electric mine car Pending CN116872715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310866040.3A CN116872715A (en) 2023-07-14 2023-07-14 Driving system of electric mine car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310866040.3A CN116872715A (en) 2023-07-14 2023-07-14 Driving system of electric mine car

Publications (1)

Publication Number Publication Date
CN116872715A true CN116872715A (en) 2023-10-13

Family

ID=88254500

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310866040.3A Pending CN116872715A (en) 2023-07-14 2023-07-14 Driving system of electric mine car

Country Status (1)

Country Link
CN (1) CN116872715A (en)

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