CN216467315U - Power system for pump truck and pump truck - Google Patents
Power system for pump truck and pump truck Download PDFInfo
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- CN216467315U CN216467315U CN202120791855.6U CN202120791855U CN216467315U CN 216467315 U CN216467315 U CN 216467315U CN 202120791855 U CN202120791855 U CN 202120791855U CN 216467315 U CN216467315 U CN 216467315U
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Abstract
The utility model relates to the technical field of engineering machinery, and discloses a power system for a pump truck, wherein the pump truck comprises a chassis part and an upper mounting part, and the power system comprises: the power device comprises an engine and a generator mechanically connected with the engine, wherein the generator is used for converting mechanical energy of the engine into electric energy; the energy storage device is electrically connected with the generator and is used for storing electric energy generated by the generator; the driving device is electrically connected with the energy storage device and is used for acquiring electric energy from the energy storage device to drive the chassis part to run; the main pump power device is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device so as to drive high-power demand components in the upper mounting part; and the auxiliary power device is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device so as to drive the low-power-demand components in the upper assembling part. The utility model can reduce the energy consumption of the pump truck, improve the energy utilization rate of the pump truck and ensure that the pump truck has better economy.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a power system for a pump truck and the pump truck.
Background
The pump truck is an important road vehicle in engineering machinery, the power part of the traditional pump truck adopts a diesel engine as a power source, power is transmitted to a transfer case through a clutch gearbox, and the transfer case can physically select a power transmission path to transmit the power to wheels of the pump truck or to an upper loading unit of the pump truck.
In the process of running or loading operation of the pump truck, the energy consumption of the engine is high, the working efficiency is low, and the energy utilization rate of the pump truck is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the embodiment of the utility model provides a power system for a pump truck.
In order to achieve the above object, a first aspect of the present invention provides a power system for a pump truck, the pump truck including a chassis portion and an upper mounting portion, the power system comprising:
the power device comprises an engine and a generator mechanically connected with the engine, wherein the generator is used for converting mechanical energy of the engine into electric energy;
the energy storage device is electrically connected with the generator and is used for storing electric energy generated by the generator;
the driving device is electrically connected with the energy storage device and is used for acquiring electric energy from the energy storage device to drive the chassis part to run;
the main pump power device is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device so as to drive high-power demand components in the upper mounting part; and
and the auxiliary power device is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device so as to drive the low-power-demand components in the upper assembling part.
In the embodiment of the utility model, the rated power of the engine ranges from 150 kilowatts to 200 kilowatts, the rated power of the generator ranges from 150 kilowatts to 200 kilowatts, the rated power of the driving device ranges from 200 kilowatts to 250 kilowatts, and the peak power of the driving device ranges from 350 kilowatts to 400 kilowatts.
In an embodiment of the utility model, the power system further comprises:
the electric oil pump is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device to drive the chassis part to perform steering operation;
and the electric air pump is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device to drive the chassis part to execute braking operation.
And the direct current converter DCDC is electrically connected with the energy storage device and used for acquiring electric energy from the energy storage device and converting high voltage into low voltage so as to supply power for a low voltage electric device of the pump truck.
In an embodiment of the utility model, the power system further comprises:
and the vehicle control unit is respectively communicated with the power device, the energy storage device and the driving device and is used for respectively controlling the operation of the power device, the energy storage device and the driving device.
In an embodiment of the utility model, the power system further comprises:
the first controller is connected with the electric oil pump, the electric air pump and the DCDC respectively, is communicated with the vehicle control unit, and is used for receiving a first control instruction from the vehicle control unit and sending the first control instruction to the electric oil pump, the electric air pump or the DCDC.
In the embodiment of the utility model, the high-power demand component comprises a main pump and an arm frame pump; the main pump power device comprises a main pump motor and a main pump motor controller, and the main pump motor controller is used for controlling the main pump motor to drive the main pump and/or the arm support pump to work.
In an embodiment of the utility model, the low power demand components include a constant pressure pump and a gear pump; the auxiliary power device comprises an auxiliary motor and an auxiliary motor controller, and the auxiliary motor controller is used for controlling the auxiliary motor to drive the constant pressure pump and/or the gear pump to work.
In an embodiment of the utility model, the upper-mounted part further comprises an upper-mounted controller, and the upper-mounted controller is communicated with the vehicle control unit, communicated with the main pump motor controller and/or the auxiliary motor controller, and used for receiving a second control instruction from the vehicle control unit and sending the second control instruction to the main pump motor controller and/or the auxiliary motor controller.
In the embodiment of the utility model, the rated power of the main pump motor ranges from 150 kilowatts to 220 kilowatts, and the rated power of the auxiliary motor ranges from 10 kilowatts to 30 kilowatts.
The utility model provides a pump truck, which comprises the power system for the pump truck.
In the embodiment of the utility model, the chassis part of the pump truck is driven by the driving device, the loading operation of the pump truck is driven by the main pump power device and/or the auxiliary power device, and the power of the chassis part and the loading part of the pump truck is decoupled. The main pump power device and the auxiliary power device are added to independently drive the pump truck to carry out loading operation, particularly, the main pump power device drives high-power demand components in the loading part, for example, the main pump power device drives a main pump and/or an arm frame pump to work, the auxiliary power device drives low-power demand components in the loading part, for example, the auxiliary power device drives a constant pressure pump and/or a gear pump to work, therefore, the power of the loading part of the pump truck is optimized, the power of the loading part is independent, the low-power demand components and the high-power demand components which work for a long time are respectively classified and are respectively driven by power devices with different powers, the adaptability of the power of the pump truck is improved, the energy utilization rate of the pump truck is improved, the energy loss is reduced, and the economy of the pump truck is better.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the embodiments of the utility model without limiting the embodiments of the utility model. In the drawings:
FIG. 1 schematically illustrates a schematic diagram of a power system for a pump truck according to an embodiment of the present invention;
FIG. 2 schematically illustrates a system diagram of a pump truck according to an embodiment of the present invention;
fig. 3 schematically illustrates a schematic diagram of another power system for a pump truck according to an embodiment of the present invention.
Description of the reference numerals
100. A power plant; 101. An engine;
102. a generator; 200. An energy storage device;
300. a drive device; 400. A main pump power plant;
500. an auxiliary power unit; 700. A vehicle control unit;
800. auxiliary unit
1. Storage battery 2, DCDC
3. Electric oil pump 4 and electric air pump
5. All-in-one controller 6 and charging port
7. Power battery 8 and main controller
9. Upper controller 10 and high-voltage distribution box
11. Engine controller 12 and generator controller
13. Main pump motor controller 14 and auxiliary motor controller
15. A main pump motor 16 and an auxiliary motor
17. Constant pressure pump 18, gear pump
19. Boom pump 20 and main pump
21. Drive motor controller 22, drive motor
23. ATM gearbox 24 and drive axle
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the utility model, are given by way of illustration and explanation only, not limitation.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Fig. 1 schematically shows a schematic view of a power system for a pump truck according to an embodiment of the utility model. The pump truck comprises a chassis part and an upper mounting part. In one embodiment of the present invention, as shown in fig. 1, there is provided a power system for a pump truck, comprising:
a power plant 100 including an engine 101 and a generator 102 mechanically connected to the engine 101, the generator 102 being configured to convert mechanical energy of the engine 101 into electrical energy;
an energy storage device 200 electrically connected to the generator 102 for storing the electric energy generated by the generator 102;
the driving device 300 is electrically connected with the energy storage device 200 and is used for obtaining electric energy from the energy storage device 200 to drive the chassis part to run;
a main pump power unit 400 electrically connected to the energy storage device 200 for obtaining electric energy from the energy storage device 200 to drive high power demand components in the upper mounting portion; and
and an auxiliary power unit 500 electrically connected to the energy storage device 200 for obtaining electric energy from the energy storage device 200 to drive the low power demand components in the upper mounting portion.
The energy storage device 200 can also supply power to the main pump power device 400 and the auxiliary power device 500, and the main pump power device 400 and the auxiliary power device 500 convert electric energy into mechanical energy to drive the loading part of the pump truck to perform loading operation.
The driving device 300 may include: a drive motor controller, a drive motor, an AMT (automated mechanical transmission) gearbox and a drive axle. The energy storage device 200 can supply power to the driving device 300, the driving device 300 converts electric energy into mechanical energy, and the driving device 300 drives the chassis part of the pump truck to run. The driving device 300 is decoupled from the engine 101, so that the loss of the engine 101 is reduced, and the economy of the engine 101 is improved.
The pump truck is a road vehicle which is important in engineering machinery, and comprises a concrete pump truck, wherein the concrete pump truck is a machine for continuously conveying concrete along a pipeline by using pressure. The concrete pump truck comprises a pump body and a delivery pipe. The pump body is arranged on an automobile chassis and is provided with a telescopic or bendable distributing rod. The concrete pump truck is formed by modifying a truck chassis, and is provided with a motion and power transmission device, a pumping and stirring device, a distributing device and other auxiliary devices. The concrete can be conveyed to a certain height and distance by utilizing the distributing rods and the conveying pipes on the pump truck.
The pump truck belongs to a special engineering machine, and the total mass of the vehicle is large, for example, the total weight of a four-axle pump truck can reach 44000 Kg. In the requirement of the power performance of the whole vehicle, the highest speed of the pump vehicle is not lower than 90Km/h, the maximum climbing gradient is not lower than 34%, and the requirement of acceleration time is not high. However, the chassis part of the conventional commercial vehicle is designed, and has requirements on the maximum vehicle speed, the maximum climbing gradient and the acceleration time of the whole vehicle, so that the installed power of a diesel engine of the chassis part of the pump truck is large, the rated power of the engine of a general four-axle pump truck reaches 340kW, and the maximum power requirement does not exceed 260kW during the installation operation of the pump truck, that is, the power required by the pump truck under the installation operation condition and the running condition has a large difference. According to big data analysis, the energy consumption proportion of the pump truck working condition is as follows: 25% of running, 50% of pumping, 15% of waiting materials and 10% of others. The power system provided by the embodiment of the utility model optimizes the energy consumption of the pump truck based on the energy consumption analysis of the pump truck under different working conditions, thereby reducing the pumping energy consumption and improving the energy utilization rate.
Therefore, the power required by the pump truck during chassis running and loading operation is different, in the embodiment of the utility model, the chassis part of the pump truck is driven by the driving device 300, the loading operation of the pump truck is driven by the main pump power device 400 and/or the auxiliary power device 500, and the power of the chassis part and the loading part of the pump truck is decoupled. The main pump power device 400 and the auxiliary power device 500 are added to independently drive the loading operation of the pump truck, particularly, the main pump power device 400 drives high-power demand components in the loading part, for example, the main pump power device 400 drives the main pump 20 and/or the boom pump 19 to work, and the auxiliary power device 500 drives low-power demand components in the loading part, for example, the auxiliary power device 500 drives the constant pressure pump 17 and/or the gear pump 18 to work, so that the power of the loading part of the pump truck is optimized, the power of the loading part is independent, the low-power demand and the high-power demand which work for a long time are respectively classified and are respectively driven by power devices with different powers, the adaptability of the power of the pump truck is improved, the energy utilization rate of the pump truck is improved, the energy loss is reduced, and the economy of the pump truck is better.
In one embodiment, the power system for a pump truck further comprises:
an electric oil pump 3 electrically connected to the energy storage device 200 for obtaining electric energy from the energy storage device 200 to drive the chassis portion to perform a steering operation;
and an electric air pump 4 electrically connected to the energy storage device 200 for obtaining electric energy from the energy storage device 200 to drive the chassis portion to perform a braking operation.
The electric oil pump 3 supplies power for steering the vehicle. The electric air pump 4 provides power for braking the vehicle. The electric oil pump 3 and the electric air pump 4 are also decoupled from the engine 101, so that the loss of the engine 101 is reduced, and the economy of the engine 101 is improved.
The pump truck belongs to an engineering mechanical vehicle with short running time and long parking loading operation time, and during parking loading operation, steering and braking operation of the vehicle are not needed, so that the electric oil pump 3 and the electric oil pump 4 can be in a stop state, and the economy of the whole vehicle is further improved.
In one embodiment, the rated power of the engine 101 ranges from 150 kilowatts to 200 kilowatts, the rated power of the generator ranges from 150 kilowatts to 200 kilowatts, the rated power of the driving device 300 ranges from 200 kilowatts to 250 kilowatts, and the peak power of the driving device 300 ranges from 350 kilowatts to 400 kilowatts. It should be noted that, according to the operating characteristics of the pump truck, the power of the engine 101, the power of the generator 102, and the power of the driving device 300 may be set to other values, and the above selected values are only preferred embodiments provided by the present disclosure.
In one embodiment, the upper mounting portion includes: the system comprises a main pump 20, an arm support pump 19, a constant pressure pump 17, a gear pump 18 and an upper controller 9, wherein a main pump power device 400 is respectively connected with the main pump 20 and the arm support pump 19, an auxiliary power device 500 is respectively connected with the constant pressure pump 17 and the gear pump 18, and the upper controller 9 is respectively connected with the main pump power device 400 and the auxiliary power device 500 through a controller area network CAN bus;
the high power requirements of the upper part include: the main pump power device 400 drives the main pump 20 and/or the arm support pump 19 to work;
the low power requirements of the upper part include: the auxiliary power unit 500 drives the constant pressure pump 17 and/or the gear pump 18 to operate.
In an embodiment, the power system for the pump truck further includes a main controller 8, the main controller 8 is connected to the power device 100, the energy storage device 200 and the driving device 300 through a CAN bus, and the main controller 8 is configured to control the power device 100, the energy storage device 200 and the driving device 300 to be turned on or turned off.
In one embodiment, the state of the drive device 300: including electric state and power generation state, main controller 8 is used for under the braking condition that the pump truck is in the operating mode, control drive arrangement 300 and get into the power generation state to the recovered energy.
The driving device 300 can drive the chassis part to run in the electric state, and the driving device 300 can recover energy in the power generation state. When the driving device 300 is in the electric state, the electric energy is converted into the mechanical energy. When the driving device 300 is in the power generation state, the mechanical energy is converted into the electric energy.
In one embodiment, the main pump power plant 400 includes: a main pump motor controller 13 and a main pump motor 15, the auxiliary power unit 500 including: the auxiliary motor controller 14 and the auxiliary motor 16, the upper-mounted controller 9 is respectively connected with the main pump motor controller 13 and the auxiliary motor controller 14 through a CAN bus, the main pump motor controller 13 is electrically connected with the main pump motor 15, the auxiliary motor controller 14 is electrically connected with the auxiliary motor 16, and the upper-mounted controller 9 is also connected with the main controller 8 through the CAN bus.
In one embodiment, the loading operation condition of the pump truck comprises: preparing working conditions, waiting working conditions, pumping working conditions, pipe plugging working conditions and finishing working conditions;
when the pump truck is in a preparation working condition, the main controller 8 is used for controlling the engine 101 and the driving device 300 to be closed, the upper-mounted controller 9 is used for controlling the main pump power device 400 to be opened, and the main pump power device 400 is used for driving the arm support pump 19 to execute the work of supporting legs and unfolding the arm support;
when the pump truck is in a waiting working condition, the main controller 8 is used for controlling the engine 101 and the driving device 300 to be closed, the upper-mounted controller 9 is used for controlling the auxiliary power device 500 to be opened, and the auxiliary power device 500 is used for driving the gear pump 18 and the constant pressure pump 17 to perform stirring and distributing work;
when the pump truck is in a pumping working condition, the main controller 8 is used for controlling the driving device 300 to be closed, the upper controller 9 is used for controlling the main pump power device 400 and the auxiliary power device 500 to be opened, the main pump power device 400 is used for driving the main pump 20 to perform pumping work and driving the boom pump 19 to perform boom adjustment work, and the auxiliary power device 500 is used for driving the gear pump 18 and the constant pressure pump 17 to perform stirring and distributing work;
when the pump truck is in a pipe blockage working condition, the main controller 8 is used for controlling the engine 101 and the driving device 300 to be closed, the upper controller 9 is used for controlling the main pump power device 400 to be opened, and the main pump power device 400 is used for driving the main pump 20 to execute the work of a reverse pump;
when the pump truck is in a finished working condition, the main controller 8 is used for controlling the engine 101 and the driving device 300 to be closed, the upper-mounted controller 9 is used for controlling the main pump power device 400 and the auxiliary power device 500 to be opened, the auxiliary power device 500 is used for driving the gear pump 18 to perform cleaning work, and the main pump power device 400 is used for driving the arm support pump 19 to perform arm support recovery and support leg recovery work.
In one embodiment, the main pump motor 15 is rated in the range of 150 kilowatts to 220 kilowatts, and the auxiliary motor 16 is rated in the range of 10 kilowatts to 30 kilowatts.
A main pump motor 15 and an auxiliary motor 16 are added in a power system of the upper assembly part, and low-power parts of the upper assembly part are driven independently, so that the energy utilization rate is improved, and a low-efficiency area of a high-power motor is avoided.
In one embodiment, the powertrain system includes a hybrid controller 8 in communication with the power device 100, the energy storage device 200, and the drive device 300, respectively, for controlling the operation of the power device 100, the energy storage device 200, and the drive device 300, respectively.
In one embodiment, the power system further comprises: the first controller is respectively connected with the electric oil pump 3, the electric air pump 4 and the DCDC 2, and the first controller is communicated with the vehicle control unit 8 and used for receiving a first control command from the vehicle control unit 8 and sending the first control command to the electric oil pump 3, the electric air pump 4 or the DCDC 2.
The first controller is the all-in-one controller 5 in fig. 3. The all-in-one controller 5 may receive a first control instruction of the vehicle control unit 8, and the all-in-one controller 5 may also directly control the operations of the electric oil pump 3, the electric air pump 4, and the DCDC 2.
In one embodiment, the high power demand components include a main pump 20 and a boom pump 19; the main pump power device comprises a main pump motor 15 and a main pump motor controller 13, and the main pump motor controller 13 is used for controlling the main pump motor 15 to drive the main pump 20 and/or the boom pump 19 to work.
In one embodiment, the low power demand components include a constant pressure pump 17 and a gear pump 18; the auxiliary power unit 500 includes an auxiliary motor 16 and an auxiliary motor controller 14, and the auxiliary motor controller 14 is used for controlling the auxiliary motor 16 to drive the constant pressure pump 17 and/or the gear pump 18 to work.
In one embodiment, the upper-mounted part further comprises an upper-mounted controller 9, and the upper-mounted controller 9 is in communication with the vehicle controller 8 and is in communication with the main pump motor controller 13 and/or the auxiliary motor controller 14, and is configured to receive a second control command from the vehicle controller 8 and send the second control command to the main pump motor controller 13 and/or the auxiliary motor controller 14.
The upper controller 9 may receive a second control instruction of the vehicle control unit 8, and the upper controller 9 may also directly control operations of the main pump motor controller 13 and the auxiliary motor controller 14. The upper controller 9 can exchange information or instructions related to the chassis part and the upper part with the vehicle control unit 8, and the upper controller 9 can update the interactive information content according to different working conditions of the main pump motor controller 13 and/or the auxiliary motor controller 14.
The power system for a pump truck according to an embodiment of the present invention is further explained and illustrated with an embodiment.
The specific embodiment introduces how to optimize the energy consumption of the pump truck from a series hybrid angle by optimizing the power scheme of the pump truck as a whole by combining the performance requirement and the working condition characteristics of the pump truck and by combining a new energy technology with an energy utilization advantage on the market at present and performing overall optimization on the overall architecture of the pump truck.
First, a complete vehicle system architecture of a series hybrid electric concrete pump vehicle which can be realized as follows is constructed, and fig. 2 schematically shows a system schematic diagram of the pump vehicle according to an embodiment of the utility model. As shown in fig. 2, the entire vehicle system architecture of the series hybrid electric concrete pump vehicle includes: the energy storage device comprises a power device 100, an energy storage device 200, a driving device 300, an upper mounting device 600, a whole vehicle control unit 700 and an auxiliary unit 800.
The power plant 100 includes: an engine 101, an engine controller 11, a generator 102, and a generator controller 12. The power plant 100 may also be referred to as a range extender unit, the engine 101 may also be referred to as a range extender engine, the engine controller 11 may be abbreviated as an ecu (electronic Control unit), the generator 102 may also be abbreviated as a range extender motor, and the generator controller 12 may be abbreviated as an apu (apu) (auxiary power unit).
The driving device 300 includes: a drive motor 22, a drive motor controller 21, an AMT gearbox 23 and a transaxle 24. The drive motor controller 21 may be abbreviated as mcu (motorcontrol unit).
The energy storage device 200 includes: power battery package 7, power battery management system and high voltage distribution cabinet. Energy storage device 200 may also be referred to as an energy unit, among others. In fig. 3, the power battery pack 7 is labeled as a power battery 7.
The vehicle control unit comprises a vehicle controller 8, the vehicle controller 8 can be called a main controller 8, and the vehicle controller 8 can be abbreviated as a VCU. The vehicle controller 8 receives relevant information of the vehicle, for example: an accelerator pedal signal, a brake signal, a gear signal, a vehicle speed signal, and the like. The vehicle control unit 8 outputs a corresponding control signal according to the current vehicle state, for example: relay switch commands, drive motor requested torque, drive motor requested speed, range motor requested torque, range motor requested speed, and the like.
The facial make-up device includes: the system comprises an upper controller 9, a main pump power device 400, an auxiliary power device 500, a main pump 20, a boom pump 19, a constant pressure pump 17 and a gear pump 18. The main pump power device 400 and the auxiliary power device 500 are mainly used for providing power during the loading operation of the pump truck. Wherein, main pump power device 400 includes: a main pump motor controller 13 and a main pump motor 15. The auxiliary power unit 500 includes: an auxiliary motor controller 14 and an auxiliary motor 16. The upper controller 9 may be used to control the operations of the respective components of the upper operation, and the upper controller 9 may control the main pump motor controller 13 and the auxiliary motor controller 14. In the range extender unit, the engine controller 11 is integrated with the engine 101, and the generator 102 is connected with the engine 101 by a rigid connection manner, which includes a spline, a clutch, a flange plate and the like. The generator controller 12 and the generator 102 may be integrated into a two-in-one system, or may be separately provided as an independent unit, and if the two-in-one system is provided, the two-in-one system does not need to be externally connected with a three-phase high-voltage line, and if the two-in-one system is provided, the generator controller 12 and the generator 102 need to be flexibly connected through the three-phase high-voltage line.
In the driving apparatus 300, the driving motor controller 21 is a separate unit, and may form a driving motor assembly with the driving motor 22 and the AMT gearbox 23, and the driving motor assembly is rigidly connected to the driving axle 24 through a transmission shaft.
In the energy unit, the power battery pack 7 may be one or more battery packs connected in series, or one or more battery packs connected in parallel, or a plurality of battery packs connected in series and parallel. The power battery management system may be integrated within the power battery pack, or may be a stand-alone unit. The high voltage power distribution cabinet 10 may be a stand-alone unit or may be integrated in the power battery pack 7. The power battery pack 7 may be alternatively provided with the charging port 6, that is, the power battery pack 7 may be charged and stored with energy in another various ways, which is not limited in this embodiment of the present invention.
In the loading device, the loading controller 9 may be a stand-alone unit or may be integrated with the vehicle control unit 8. The auxiliary motor controller 14 and the auxiliary motor 16 may be a two-in-one system or may be separate units. The main pump 20 and the boom pump 19 are driven by power supplied by the main pump motor 15, and the auxiliary motor 16 drives the gear pump 18 and/or the constant pressure pump 17 to perform stirring and distributing operations.
The auxiliary unit includes: the all-in-one controller 5, the air pump controller, the electric air pump 4, the oil pump controller, the electric oil pump 3, and the DCDC 2 (direct current-direct current converter), the all-in-one controller 5 may be an independent unit, and the DCDC 2 may be an independent unit. The electric oil pump 3 provides power for steering the vehicle. The electric air pump 4 provides power for braking the vehicle. The all-in-one controller 5 is the first controller.
Fig. 3 schematically shows a schematic diagram of another power system for a pump truck according to an embodiment of the present invention, and as shown in fig. 3, the power system exhibits a central drive distribution type, wherein the drive device 300 includes: a drive motor controller 21, a drive motor 22, an AMT gearbox 23, a propeller shaft and a drive axle 24. In the loading device, a main pump 20 and a boom pump 19 form a pumping system, an auxiliary motor controller 14 and an auxiliary motor 16 are additionally arranged, the auxiliary motor 16 drives a gear pump 18 and a constant pressure pump 17, and the gear pump 18 and the constant pressure pump 17 perform stirring and distributing work of loading operation.
In the whole vehicle layout framework, the engine 101 and the driving device 300 are decoupled by using the range extender unit, so that the power requirement of the engine 101 can be reduced, the engine 101 can work on an optimal fuel curve by controlling the whole vehicle, and the energy consumption of the whole vehicle is greatly reduced.
The electric control principle of the series hybrid electric concrete pump truck under different working conditions is explained below.
The working conditions of the pump truck comprise: running condition, engine fault condition and loading operation condition. Wherein, the operating mode includes: the system comprises a rapid acceleration working condition, a stable running working condition, a short-time parking working condition, a parking starting working condition and a braking working condition. The loading operation working condition comprises: the method comprises the following steps of preparing working conditions, waiting working conditions, pumping working conditions, pipe plugging working conditions and finishing working conditions.
Under the condition of rapid acceleration under the running condition, the driving motor 22 enters an electric state to drive the chassis to run, the energy storage device 200 and the engine 101 provide energy, the driving motor 22 outputs with peak power, and the driving force of the whole vehicle reaches the maximum.
Under a stable driving condition of the driving conditions, the driving motor 22 enters an electric State to drive the chassis to partially drive, the generator 102 provides energy, and the energy storage device 200 determines to enter a charging State or a power compensation discharging State according to a State of Charge (SOC) and a vehicle energy demand.
Under the short-time parking condition of the driving condition, the extended-range engine 101 enters a parking state, and energy required by the pumping unit is provided by the energy storage device 200. The short-time parking working condition can refer to the condition that the pump truck waits for a traffic light.
Under the stop starting condition of the running condition, the range-extended engine 101 enters a stop state, and energy required by the driving of the pump truck and the components of the whole pump truck is provided by the energy storage device 200. When the vehicle speed exceeds a certain value, the engine 101 determines whether to work according to the SOC state of the energy storage device 200.
In the braking mode of the driving mode, the range-extended engine 101 enters a stopped state. The drive motor 22 enters a power generation state to recover energy. The amount of power generated by the drive motor 22 is determined by the SOC and the energy required by the vehicle components.
Under the engine fault condition, the range-extended engine 101 enters a shutdown state, and energy required by vehicle driving and vehicle components is provided by the energy storage device 200. In addition, the maximum vehicle speed at which the vehicle travels is also limited.
Under the preparatory condition of the top loading operation condition, the range-extended engine 101 enters a stop state, the auxiliary motor 16 enters a high-voltage standby state, and the drive motor 22 enters a stop state. The main pump motor 15 enters an electric state to drive the boom pump 19 to perform the boom and boom extension work, and the energy required by the main pump motor 15 is provided by the energy storage device 200.
Under the material waiting condition of the top loading operation condition, the range-extended engine 101 enters a stop state, and the driving motor 22 enters the stop state. The auxiliary electric motor 16 is electrically driven to drive the gear pump 18 and the constant pressure pump 17 to perform the stirring and dispensing operations, and the energy required by the auxiliary electric motor 16 is supplied from the energy storage device 200.
Under the pumping condition of the top loading operation condition, the driving motor 22 enters a shutdown state, the main pump motor 15 enters an electric state to drive the main pump 20 to perform pumping, and the main pump motor 15 also drives the boom pump 19 to perform boom adjustment. The auxiliary motor 16 is electrically driven to drive the gear pump 18 and the constant pressure pump 17 to perform the stirring and dispensing operations. The energy required by the main pump motor 15 and the auxiliary motor 16 is provided by the energy storage device 200 and the range-extended engine 101. Where whether the range extended engine 101 is operating depends on the SOC of the energy storage device 200 and the amount of energy required for the upper-mounted pumping operation. When the energy of the energy storage device 200 is sufficient to provide power to the main pump motor 15 and the auxiliary motor 16, the range-extended engine 101 does not need to operate.
Under the pipe blocking working condition of the top loading working condition, the range-extended engine 101 enters a shutdown state, the driving motor 22 enters a shutdown state, and the auxiliary motor 16 enters a high-voltage standby state. The main pump motor 15 is brought into an electric state to drive the main pump 20 to perform a reverse pumping operation. The main pump motor 15 works until the pipe blockage condition is finished.
Under the finish condition of the top loading operation condition, the range-extended engine 101 enters a stop state, and the drive motor 22 enters the stop state. The auxiliary motor 16 is electrically driven to drive the gear pump 18 to perform a cleaning operation, and after the cleaning operation is completed, the auxiliary motor 16 is put into a high-pressure standby state. Then the main pump motor 15 enters an electric state to drive the boom pump 19 to perform boom recovery and support leg recovery, and the energy required by the main pump motor 15 and the auxiliary motor 16 is provided by the energy storage device 200.
The embodiment of the utility model optimizes the power of the chassis part and the power of the upper part of the electric concrete pump truck, and combines the actual working condition of the pump truck to make the power unit of the upper part independent, thereby improving the economy of the product on the whole truck level.
According to the embodiment of the utility model, the optimal classification is made for the loading device of the pump truck by combining the actual working condition of the pump truck, the low-power components working for a long time are classified into one class, the high-power components working for a long time are classified into another class, the main pump motor 15 and the auxiliary motor 16 are added, and the energy consumption of the pump truck is greatly reduced.
According to the embodiment of the utility model, the electric oil pump 3 for vehicle steering and the electric air pump 4 for vehicle braking are structurally defined, and the electric oil pump 3 and the electric air pump 4 are decoupled with the engine 101, so that the energy loss of auxiliary parts of the engine 101 can be reduced, and the economy of the engine 101 is improved. When the concrete pump truck is in loading operation, the chassis part of the truck is in a stop state, the electric oil pump 3 and the electric air pump 4 can stop working, the energy loss during the loading operation of the truck is reduced, and the economical efficiency of the whole truck is improved.
In the embodiment of the utility model, a transfer case is cancelled, the power of a chassis part is decoupled with the power of an upper mounting part, and a main pump motor 15 and an auxiliary motor 16 are directly driven, so that the energy utilization rate of the whole vehicle is highest. The operating point of the engine 101 is not restricted by driving, and can be continuously operated in a high-efficiency region.
In the power arrangement of the upper device part of the embodiment of the utility model, as another optional implementation manner, the auxiliary motor 16 may drive the gear pump 18, and the auxiliary motor 16 provides power for the stirring and distributing operations; or the auxiliary motor 16 drives the boom pump 19, the constant pressure pump 17 and the gear pump 18 to perform the work of expanding and recovering, distributing and stirring the supporting legs and the boom.
The power system for the pump truck presented in fig. 3 has a strong adaptability to different operating conditions.
In the embodiment of the utility model, as the chassis part of the pump truck is driven by the driving device 300, the loading operation of the pump truck is driven by the main pump power device 400 and/or the auxiliary power device 500, and the power of the chassis part and the loading part of the pump truck is decoupled. The main pump power device 400 and the auxiliary power device 500 are added to independently drive the loading operation of the pump truck, particularly, the main pump power device 400 drives high-power demand components in the loading part, for example, the main pump power device 400 drives the main pump 20 and/or the boom pump 19 to work, and the auxiliary power device 500 drives low-power demand components in the loading part, for example, the auxiliary power device 500 drives the constant pressure pump 17 and/or the gear pump 18 to work, so that the power of the loading part of the pump truck is optimized, the power of the loading part is independent, the low-power demand and the high-power demand which work for a long time are respectively classified and are respectively driven by power devices with different powers, the adaptability of the power of the pump truck is improved, the energy utilization rate of the pump truck is improved, the energy loss is reduced, and the economy of the pump truck is better.
The utility model further provides a pump truck, and the pump truck comprises the power system for the pump truck of any one of the embodiments.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (10)
1. A power system for a pump truck, the pump truck including a chassis portion and a top loading portion, the power system comprising:
the power device comprises an engine and a generator mechanically connected with the engine, wherein the generator is used for converting mechanical energy of the engine into electric energy;
the energy storage device is electrically connected with the generator and is used for storing the electric energy generated by the generator;
the driving device is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device so as to drive the chassis part to run;
the main pump power device is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device so as to drive high-power-demand components in the upper mounting part; and
and the auxiliary power device is electrically connected with the energy storage device and is used for obtaining electric energy from the energy storage device so as to drive the low-power-demand components in the upper mounting part.
2. The power system of claim 1, wherein the engine has a power rating in a range of 150 kilowatts to 200 kilowatts, the generator has a power rating in a range of 150 kilowatts to 200 kilowatts, the drive unit has a power rating in a range of 200 kilowatts to 250 kilowatts, and the drive unit has a peak power rating in a range of 350 kilowatts to 400 kilowatts.
3. The power system of claim 1, further comprising:
the electric oil pump is electrically connected with the energy storage device and used for obtaining electric energy from the energy storage device to drive the chassis part to perform steering operation;
the electric air pump is electrically connected with the energy storage device and is used for acquiring electric energy from the energy storage device to drive the chassis part to execute braking operation;
and the direct current converter DCDC is electrically connected with the energy storage device and is used for acquiring electric energy from the energy storage device and converting high-voltage electricity into low-voltage electricity so as to supply power to a low-voltage electric device of the pump truck.
4. The power system of claim 3, further comprising:
and the vehicle control unit is respectively communicated with the power device, the energy storage device and the driving device and is used for respectively controlling the operations of the power device, the energy storage device and the driving device.
5. The power system of claim 4, further comprising:
the first controller is respectively connected with the electric oil pump, the electric air pump and the DCDC, and the first controller is communicated with the vehicle control unit and used for receiving a first control command from the vehicle control unit and sending the first control command to the electric oil pump, the electric air pump or the DCDC.
6. The power system of claim 4, wherein the high power-requiring components include a main pump and a boom pump; the main pump power device comprises a main pump motor and a main pump motor controller, and the main pump motor controller is used for controlling the main pump motor to drive the main pump and/or the arm support pump to work.
7. The power system of claim 6, wherein the low power demand components include a constant pressure pump and a gear pump; the auxiliary power device comprises an auxiliary motor and an auxiliary motor controller, and the auxiliary motor controller is used for controlling the auxiliary motor to drive the constant pressure pump and/or the gear pump to work.
8. The powertrain system of claim 7, wherein the upper mount portion further comprises an upper mount controller in communication with the vehicle control unit and in communication with the main pump motor controller and/or the auxiliary motor controller for receiving second control commands from the vehicle control unit and sending the second control commands to the main pump motor controller and/or the auxiliary motor controller.
9. The power system of claim 7, wherein the main pump motor is rated for a power in the range of 150 kilowatts to 220 kilowatts, and the auxiliary motor is rated for a power in the range of 10 kilowatts to 30 kilowatts.
10. A pump truck characterized by comprising a power system for a pump truck according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791855.6U CN216467315U (en) | 2021-04-16 | 2021-04-16 | Power system for pump truck and pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791855.6U CN216467315U (en) | 2021-04-16 | 2021-04-16 | Power system for pump truck and pump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216467315U true CN216467315U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120791855.6U Active CN216467315U (en) | 2021-04-16 | 2021-04-16 | Power system for pump truck and pump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216467315U (en) |
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2021
- 2021-04-16 CN CN202120791855.6U patent/CN216467315U/en active Active
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