CN113306383A - Mining dump truck - Google Patents
Mining dump truck Download PDFInfo
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- CN113306383A CN113306383A CN202110866645.3A CN202110866645A CN113306383A CN 113306383 A CN113306383 A CN 113306383A CN 202110866645 A CN202110866645 A CN 202110866645A CN 113306383 A CN113306383 A CN 113306383A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The embodiment of the invention discloses a mining dump truck, which comprises an engine, a power supply device, an AT (automatic transmission), an electric drive device and a rear axle, wherein the engine is connected with the power supply device; the electric driving device comprises AT least one first motor and an ATM transmission, a rotating shaft of the first motor is connected with an input shaft of the ATM transmission, and an output shaft of the ATM transmission is in transmission connection with the AT transmission and the rear axle respectively; the AT transmission is also connected with the engine; the first motor is also connected with the power supply device. When the power of the engine is insufficient, the motor can be started, so that the engine and the motor jointly provide power for the mining dump truck, and the mining dump truck is guaranteed to have enough power to run.
Description
Technical Field
The invention relates to the field of mining equipment, in particular to a mining dump truck.
Background
Along with the large-scale development of mine transportation equipment, the slope of a mine transportation road is large, and the power requirement on power equipment is large. The existing mining dump truck mainly uses a high-power diesel engine as power, and under some conditions, such as high-altitude areas, the power of the engine can be reduced along with the rise of the altitude, so that the power of the mining dump truck is insufficient, and the use of the mining dump truck is influenced.
Disclosure of Invention
In view of this, the invention provides a mining dump truck, which aims to solve the problem that the use of the mining dump truck is influenced due to insufficient power of the mining dump truck.
The embodiment of the invention provides a mining dump truck, which comprises an engine, a power supply device, an AT (automatic transmission), an electric drive device and a rear axle, wherein the engine is connected with the power supply device;
the electric driving device comprises AT least one first motor and an ATM transmission, a rotating shaft of the first motor is connected with an input shaft of the ATM transmission, and an output shaft of the ATM transmission is in transmission connection with the AT transmission and the rear axle respectively; the AT transmission is also connected with the engine; the first motor is also connected with the power supply device.
Optionally, the number of the motors is two, one first motor of the two motors is a driving motor, the other first motor is a power take-off motor, the driving motor is used for driving the mining dump truck to run, and the power take-off motor is used for providing power for a hydraulic motor of the mining dump truck.
Optionally, the number of the first motors is two, the two first motors are both driving motors, the mining dump truck further comprises a second motor, the second motor is a power takeoff motor, and the second motor is connected with the power supply device.
Optionally, the ATM transmission is located between the two first electric machines, and the input shafts of the ATM transmission are respectively connected with the rotating shafts of the two first electric machines.
Optionally, the two first motors are located on one side of the ATM transmission, and the rotating shaft of one first motor is connected with the input shaft of the ATM transmission through the rotating shaft of the other first motor.
Optionally, a shaft disconnect is provided between the output shaft of the ATM transmission and the rear axle.
Optionally, a shaft disconnect is also provided between the output shaft of the ATM transmission and the AT transmission.
Optionally, the input shaft of the ATM transmission is parallel to the output shaft.
Optionally, the mining dump truck is provided with a gradient sensor, a load sensor, an accelerator pedal opening sensor and a controller, and the controller is respectively connected with the gradient sensor, the load sensor, the accelerator pedal opening sensor, the engine, the shaft separation device, the driving motor and the power take-off motor; the engine, the driving motor, the power take-off motor and the gradient sensor are mounted on a chassis of the mining dump truck, the load sensor is mounted at the bottom of a carriage of the mining dump truck, the accelerator pedal opening sensor is mounted on an accelerator pedal of the mining dump truck, and the controller is mounted in a control box of the mining dump truck;
the controller is used for controlling the driving motor to drive the speed of the mining dump truck to be increased to a first preset speed when the mining dump truck starts;
when the mining dump truck is driven to run only by the engine, if the power of the engine is greater than a first power threshold and less than or equal to a second power threshold, controlling the engine to drive the driving motor to rotate so as to charge the power supply device;
when the power of the engine is greater than a first power threshold and the load power detected by the load sensor is less than a load power threshold, controlling the driving motor to start so that the driving motor and the engine jointly drive the mining dump truck to run;
when the opening degree of the accelerator pedal detected by the accelerator pedal opening degree sensor is smaller than or equal to a preset opening degree and the gradient value detected by the gradient sensor is larger than or equal to a preset gradient, controlling the driving motor to start, and driving the driving motor to generate power by the inertia of the mining dump truck so as to charge the power supply device;
when the electric quantity of the power supply device is smaller than the preset electric quantity and the mining dump truck is in a non-driving state, controlling the shaft separation device to disconnect the output shaft of the ATM transmission from the rear axle and controlling the engine to work at a power larger than a first power threshold value so as to drive the driving motor to supply power to the power supply device;
and when the engine stops working and the mining dump truck is in a non-driving state, controlling the power take-off motor to start so as to provide power for the hydraulic motor.
Optionally, the power supply device is a storage battery.
According to the mining dump truck provided by the embodiment of the invention, when the power of the engine is insufficient, the first motor can be started, so that the engine and the first motor jointly provide power for the mining dump truck, and the mining dump truck is ensured to have enough power to run.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention as a part of the examples. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic structural view of a mining dump truck according to an alternative embodiment of the invention;
FIG. 2 is a schematic structural diagram of an electric drive according to an alternative embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an electric drive according to another alternative embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an electric drive according to yet another alternative embodiment of the present invention;
FIG. 5 is a schematic view of the construction of the shaft separating apparatus;
fig. 6 is a schematic structural diagram of a mining dump truck according to another alternative embodiment of the invention.
The system comprises an engine 1, a 2-AT transmission, a 3-transmission shaft, a 4-electric driving device, a 41-first motor, a 42-ATM transmission, a 5-power supply device, a 6-rear axle, a 7-second motor, an 8-shaft separation device, an 81-air source, an 82-air cylinder, an 83-shifting fork and an 84-sliding sleeve.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
As shown in fig. 1, an embodiment of the invention provides a mining dump truck, which includes an engine 1, a power supply device 5, an AT transmission 2, an electric drive device 4 and a rear axle 6; the electric driving device 4 comprises AT least one first electric motor 41 and an ATM transmission 42, wherein a rotating shaft of the first electric motor 41 is connected with an input shaft of the ATM transmission 42, and an output shaft of the ATM transmission 42 is in transmission connection with the AT transmission 2 and the rear axle 6 respectively; the AT transmission 2 is also connected with the engine 1; the first motor 41 is also connected to the power supply device 5.
In this embodiment, a lower power engine 1 and a lower torque AT transmission 2 can be used to reduce the equipment cost of the engine 1 and the AT transmission 2. The electric drive system is connected with the AT transmission 2 and the rear axle 6 through the transmission shaft 3 respectively. The power supply device 5 is a storage battery.
Under the condition that the power of the engine 1 is not enough to enable the mining dump truck to normally run, the power supply device 5 can supply power to the first motor 41, so that the motor 41 and the engine 1 jointly drive the mining dump truck, the mining dump truck can normally run, the first motor 41 and the engine 1 jointly drive the mining dump truck, the power is abundant, the response is fast, and the running requirement of high altitude is met. And AT derailleur 2 and electric drive device 4 compare with traditional thoughtlessly move the system, and the extensible space is big, easily arranges and control, and is little to former car structure change, and the suitability is better.
According to the mining dump truck provided by the embodiment of the invention, when the power of the engine 1 is insufficient, the first motor 41 can be started, so that the engine 1 and the first motor 41 jointly provide power for the mining dump truck, and the mining dump truck is ensured to have enough power to run.
In some embodiments, the number of the first motors 41 is two, one first motor 41 of the two first motors 41 is a driving motor, and the other first motor 41 is a power take-off motor, the driving motor is used for driving the mining dump truck to travel, and the power take-off motor is used for providing power for a hydraulic motor of the mining dump truck.
The driving motor assists the engine 1 to provide driving power for the mining dump truck, and the power take-off motor can provide power for a hydraulic motor of the mining dump truck, so that the engine 1 is not needed to provide power for the hydraulic motor, the diesel oil consumption of the engine 1 is reduced, the cost is reduced, the exhaust emission is reduced, and the pollution to the environment is reduced.
In other embodiments, as shown in fig. 1, the number of the first motors 41 is two, both the two first motors 41 are driving motors, the mining dump truck further includes a second motor 7, the second motor 7 is a power take-off motor, and the second motor 7 is connected to the power supply device 5.
Both first electric machines 41 of the electric drive 4 are arranged as drive motors, whereby the drive force provided by the drive motors is increased, which allows the use of a less powerful engine 1, which further reduces costs.
In a particular application, the two first electric machines 41 of the electric drive 4 and the ATM transmission 42 can be connected in different ways, as will be explained in more detail below.
The first mode is as follows: as shown in fig. 2, the ATM transmission 42 is located between the two first electric motors 41, and input shafts of the ATM transmission 42 are connected to rotating shafts of the two first electric motors 41, respectively.
The second mode is as follows: as shown in fig. 3 and 4, two first motors 41 are located at one side of the ATM transmission 42, and a rotating shaft of one first motor 41 is connected to an input shaft of the ATM transmission 42 through a rotating shaft of the other first motor 41.
According to the design requirements of the mining dump truck, the different connection modes can be adopted, so that the electric driving device 4 and the ATM transmission 42 can be conveniently arranged, and the applicability of the electric driving device 4 is improved.
In the above embodiment, as shown in fig. 6, the shaft separating device 8 is provided between the output shaft of the ATM transmission 42 and the rear axle 6.
Specifically, as shown in fig. 5, the shaft separation device 8 includes a cylinder 82 linked with an air source 81 of the mining dump truck, a shift fork 83 is arranged on a telescopic shaft of the cylinder 82, a sliding sleeve 84 is arranged below the shift fork 83, and the sliding sleeve 84 is connected with the rear axle 6. The air source 81 drives the telescopic shaft of the air cylinder 82 to drive the shifting fork 83 to do linear reciprocating motion, and the shifting fork 83 drives the sliding sleeve 84 to do motion, so that the output shaft of the ATM transmission 42 is connected with and disconnected from the rear axle 6 to meet different control requirements.
Further, as shown in fig. 6, a shaft separating device 8 is also provided between the output shaft of the ATM transmission 42 and the AT transmission 2.
The shaft separation device 8 may adopt the structure of the shaft separation device 8 in the above embodiment, and details thereof are omitted. A shaft disconnect 8 is also provided between the output shaft of the ATM transmission 42 and the AT transmission 2 to better accommodate different control requirements.
Further, the input shaft of the ATM transmission 42 is parallel to the output shaft to meet the layout of the entire vehicle space.
Furthermore, the mining dump truck is provided with a gradient sensor, a load sensor, an accelerator pedal opening sensor and a controller, and the controller is respectively connected with the gradient sensor, the load sensor, the accelerator pedal opening sensor, the engine 1, the shaft separation device 8, the driving motor and the power take-off motor; the mining dump truck comprises an engine 1, a driving motor, a power take-off motor and a gradient sensor, wherein the engine, the driving motor, the power take-off motor and the gradient sensor are arranged on a chassis of the mining dump truck; the controller is used for controlling the speed of the driving motor for driving the mining dump truck to be increased to a first preset speed when the mining dump truck starts; when the mining dump truck is driven to run only by the engine 1, if the power of the engine 1 is greater than a first power threshold and less than or equal to a second power threshold, controlling the engine 1 to drive a driving motor to rotate so as to charge a power supply device 5; when the power of the engine 1 is greater than a first power threshold and the load power detected by the load sensor is less than a load power threshold, controlling the driving motor to start so that the driving motor and the engine 1 jointly drive the mining dump truck to run; when the opening degree of the accelerator pedal detected by the accelerator pedal opening degree sensor is smaller than or equal to a preset opening degree and the gradient value detected by the gradient sensor is larger than or equal to a preset gradient, the driving motor is controlled to start, and the driving motor is driven by the inertia of the mining dump truck to generate electricity so as to charge the power supply device 5; when the electric quantity of the power supply device 5 is smaller than the preset electric quantity and the mining dump truck is in a non-driving state, the control shaft separation device 8 disconnects the output shaft of the ATM transmission 42 from the rear axle 6 and controls the engine 1 to work at a power larger than a first power threshold value so as to drive the motor to supply power to the power supply device 5; and when the generator 41 stops working and the mining dump truck is in a non-driving state, controlling the power take-off motor to start so as to provide power for the hydraulic motor.
In this embodiment, for different working conditions, the controller controls different devices to work, so as to improve the performance of the mining dump truck.
The first working condition is as follows: when the mining dump truck starts, the controller controls the driving motor to drive the speed of the mining dump truck to increase to a first preset speed.
When the mining dump truck starts, the mining dump truck is driven by the driving motor to reach the first preset speed so as to reduce the use frequency of the engine 1, and therefore the use amount of diesel oil of the engine 1 is reduced, the cost is reduced, the emission amount of waste gas is reduced, and the pollution to the environment is reduced. After the first preset speed is reached, the controller controls the engine 1 to start and operate in the high-efficiency area, so that the engine 1 is prevented from working at lower efficiency, and the working area of the engine 1 is optimized. Wherein the first preset speed can be set by a worker, and optionally, the first preset speed is 15 km/h.
The second working condition is as follows: when the mining dump truck is driven to run only by the engine 1, if the power of the engine 1 is greater than the first power threshold and less than or equal to the second power threshold, the engine 1 is controlled to drive the driving motor to rotate so as to charge the power supply device 5.
The power of the engine 1 is greater than the first power threshold value, which indicates that the engine 1 is in a high-efficiency region, that is, the power of the engine 1 is higher, and the power of the engine 1 is less than or equal to the second power threshold value, which indicates that the engine 1 does not reach the highest power, so that the residual power of the engine 1 can be used for driving the driving motor to rotate so as to charge the power supply device 5, thereby ensuring that the power supply device 5 has enough electric quantity. The second power threshold is larger than the first power threshold, and the first power threshold and the second power threshold can be set by workers.
The third working condition is as follows: when the power of the engine 1 is greater than the first power threshold and the load power detected by the load sensor is less than the load power threshold, the driving motor is controlled to start, so that the driving motor and the engine 1 jointly drive the mining dump truck to run.
The power of the engine 1 is greater than the first power threshold value, which indicates that the engine 1 is in a high-efficiency region, that is, the power of the engine 1 is high, and the load power is less than the load power threshold value, which indicates that the load of the mining dump truck does not reach the power required by work, that is, the engine 1 is in the high-efficiency region, but the engine 1 cannot meet the load requirement of the whole truck. Under the condition, the controller starts the driving motor, so that the driving motor and the engine 1 provide power together to meet the power required by the load, and the normal running of the mining dump truck is ensured.
The fourth working condition is as follows: when the opening degree of the accelerator pedal detected by the accelerator pedal opening degree sensor is smaller than or equal to a preset opening degree and the gradient value detected by the gradient sensor is larger than or equal to a preset gradient, the driving motor is controlled to start, and the driving motor is driven by the inertia of the mining dump truck to generate electricity so as to charge the power supply device 5.
The opening degree of the accelerator pedal is smaller than or equal to the preset opening degree, and the gradient value detected by the gradient sensor is larger than or equal to the preset gradient, so that the mining dump truck is in a downhill state, the gliding inertia of the mining dump truck can be utilized to drive the driving motor to generate electricity so as to charge the power supply device 5, and therefore energy recovery and storage are achieved. And the driving motor is in negative torque, and part of kinetic energy of the downward sliding of the dump truck can be consumed by the driving motor, so that the downward sliding kinetic energy of the dump truck is reduced, the braking force born by the brake pad of the dump truck is reduced, and the abrasion of the brake pad is reduced. Wherein, predetermine the aperture and predetermine the slope and can be set up by the staff.
The fifth working condition is as follows: when the electric quantity of the power supply device 5 is smaller than the preset electric quantity and the mining dump truck is in a non-driving state, the control shaft separation device 8 disconnects the output shaft of the ATM transmission 42 from the rear axle 6 and controls the engine 1 to work at a power larger than a first power threshold value so as to drive the motor to supply power to the power supply device 5.
The engine 1 is operated at a power greater than the first power threshold, indicating that the engine 1 is in a high-efficiency region, thereby improving the charging efficiency of the drive motor to enable the power supply device 5 to be quickly charged.
The sixth operating mode: when the engine 1 stops working and the mining dump truck is in a non-driving state, the power taking motor is controlled to be started so as to provide power for the hydraulic motor.
The generator 41 stops working, the mining dump truck is in a non-driving state, namely the mining dump truck is in a parking state, the power supply device 5 can supply power to the power take-off motor, and the power take-off motor can provide power for a hydraulic motor of the mining dump truck, so that the engine 1 is not needed to provide power for the hydraulic motor, the use amount of diesel oil of the engine 1 is further reduced, the cost is reduced, the emission amount of waste gas is reduced, and the pollution to the environment is reduced.
The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A mining dump truck is characterized by comprising an engine, a power supply device, an AT transmission, an electric drive device and a rear axle;
the electric driving device comprises AT least one first motor and an ATM transmission, a rotating shaft of the first motor is connected with an input shaft of the ATM transmission, and an output shaft of the ATM transmission is in transmission connection with the AT transmission and the rear axle respectively; the AT transmission is also connected with the engine; the first motor is also connected with the power supply device.
2. The mining dump truck according to claim 1, wherein the number of the first motors is two, one of the two motors is a driving motor, the other first motor is a power take-off motor, the driving motor is used for driving the mining dump truck to travel, and the power take-off motor is used for providing power for a hydraulic motor of the mining dump truck.
3. The mining dump truck according to claim 1, wherein the number of the first motors is two, both of the first motors are driving motors, the mining dump truck further comprises a second motor, the second motor is a power take-off motor, and the second motor is connected with the power supply device.
4. The mining dump truck according to claim 2 or 3, wherein the ATM transmission is positioned between the two first motors, and input shafts of the ATM transmission are respectively connected with rotating shafts of the two motors.
5. The mining dump truck according to claim 2 or 3, characterized in that both of the motors are located at one side of the ATM transmission, and a rotating shaft of one of the first motors is connected with an input shaft of the ATM transmission through a rotating shaft of the other first motor.
6. The mining dump truck according to claim 2 or 3, characterized in that a shaft separating device is provided between the output shaft of the ATM transmission and the rear axle.
7. The mining dump truck according to claim 2 or 3, characterized in that a shaft separating device is also arranged between the output shaft of the ATM transmission and the AT transmission.
8. The mining dump truck according to claim 2 or 3, wherein the input shaft of the ATM transmission is parallel to the output shaft.
9. The mining dump truck according to claim 6, wherein the mining dump truck is provided with a gradient sensor, a load sensor, an accelerator pedal opening sensor and a controller, and the controller is respectively connected with the gradient sensor, the load sensor, the accelerator pedal opening sensor, the engine, the shaft separation device, the drive motor and the power take-off motor; the engine, the driving motor, the power take-off motor and the gradient sensor are mounted on a chassis of the mining dump truck, the load sensor is mounted at the bottom of a carriage of the mining dump truck, the accelerator pedal opening sensor is mounted on an accelerator pedal of the mining dump truck, and the controller is mounted in a control box of the mining dump truck;
the controller is used for controlling the driving motor to drive the speed of the mining dump truck to be increased to a first preset speed when the mining dump truck starts;
when the mining dump truck is driven to run only by the engine, if the power of the engine is greater than a first power threshold and less than or equal to a second power threshold, controlling the engine to drive the driving motor to rotate so as to charge the power supply device;
when the power of the engine is greater than a first power threshold and the load power detected by the load sensor is less than a load power threshold, controlling the driving motor to start so that the driving motor and the engine jointly drive the mining dump truck to run;
when the opening degree of the accelerator pedal detected by the accelerator pedal opening degree sensor is smaller than or equal to a preset opening degree and the gradient value detected by the gradient sensor is larger than or equal to a preset gradient, controlling the driving motor to start, and driving the driving motor to generate power by the inertia of the mining dump truck so as to charge the power supply device;
when the electric quantity of the power supply device is smaller than the preset electric quantity and the mining dump truck is in a non-driving state, controlling the shaft separation device to disconnect the output shaft of the ATM transmission from the rear axle and controlling the engine to work at a power larger than a first power threshold value so as to drive the driving motor to supply power to the power supply device;
and when the engine stops working and the mining dump truck is in a non-driving state, controlling the power take-off motor to start so as to provide power for the hydraulic motor.
10. The mining dump truck according to claim 1, wherein the power supply device is a battery.
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| CN202110866645.3A CN113306383A (en) | 2021-07-29 | 2021-07-29 | Mining dump truck |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110866645.3A CN113306383A (en) | 2021-07-29 | 2021-07-29 | Mining dump truck |
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| CN113306383A true CN113306383A (en) | 2021-08-27 |
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