Power system and engineering machinery

Abstract

The embodiment of the invention provides a power system and engineering machinery. The power system comprises a driving motor with a through shaft, a loading operation system and a traveling system; a first output end and a second output end are arranged at two ends of a through shaft of the driving motor; the first output end is connected with a first system, a second system and a third system in the loading operation system, and the second output end is connected with the driving system; the driving motor comprises a first operation mode or a second operation mode, in the first operation mode, the first output end is communicated with the loading operation system, the loading operation system is driven to carry out loading operation, and meanwhile the second output end is driven to be separated from the traveling system; and in the second operation mode, the second output end is communicated with the driving system and drives the driving system to operate, and meanwhile, the first output end is separated from the loading operation system. The method is used for achieving the effect of reducing the cost of the engineering machinery.

Description

Technical Field

[0001] This application relates to the technical field of construction machinery, and particularly to a power system and a construction machinery. Background Art

[0002] A drive system needs to be provided in a construction machinery, and then the construction machinery can complete driving and superstructure operations through the drive system.

[0003] In the prior art, a drive system is usually provided in a construction machinery; one of the drive systems is connected to the driving system of the construction machinery, and then the drive system drives the construction machinery to complete driving; the other drive system is connected to the superstructure operation system of the construction machinery, and then the drive system drives the construction machinery to complete superstructure operations.

[0004] However, in the above method, since two drive systems need to be provided in the construction machinery, it is necessary to occupy a relatively large space in the construction machinery, and it is necessary to bring more manufacturing costs to other structures of the construction machinery itself; and the costs of the two drive systems are also relatively high. Summary of the Invention

[0005] The embodiments of the present application provide a power system and a construction machinery, so as to achieve the effect of reducing the cost of the construction machinery.

[0006] In a first aspect, the embodiments of the present application provide a power system, which includes a drive motor with a through shaft, a superstructure operation system, and a driving system; a first output end and a second output end are arranged at both ends of the through shaft of the drive motor; the superstructure operation system includes a first system, a second system, and a third system;

[0007] Wherein, the first output end is connected to the first system, the second system, and the third system in the superstructure operation system, and the second output end is connected to the driving system;

[0008] The drive motor includes a first operation mode or a second operation mode. In the first operation mode, the first output end is connected to the superstructure operation system to drive the superstructure operation system to perform superstructure operations, and at the same time, the second output end is disengaged from the driving system; in the second operation mode, the second output end is connected to the driving system and drives the driving system to operate, and at the same time, the first output end is disengaged from the superstructure operation system.

[0009] In a possible implementation manner, the power system further includes a transmission mechanism; the transmission mechanism is arranged between the drive motor and the superstructure operation system, the first output end is connected to the transmission mechanism, and the transmission mechanism is connected to the first system, the second system, and the third system;

[0010] In the first operating mode, the transmission mechanism transmits the power of the drive motor to at least one of the first system, the second system, and the third system.

[0011] In a possible implementation manner, the transmission mechanism is provided with a first power take-off, a second power take-off and a third power take-off;

[0012] Wherein, the first power take-off is connected to the first system, the second power take-off is connected to the second system, and the third power take-off is connected to the third system.

[0013] In a possible implementation manner, the first system is a pumping system, and the second system is an auxiliary drive system;

[0014] The transmission mechanism has a first transmission mode; in the first transmission mode, the first power take-off and the second power take-off are respectively engaged with the power output shaft of the transmission mechanism to transmit the power of the drive motor to the pumping system and the auxiliary drive system for pumping operations.

[0015] In a possible implementation, the third system is a boom system; the transmission mechanism has a second transmission mode; in the second transmission mode, the third power take-off is engaged with the power output shaft of the transmission mechanism to transmit the power of the drive motor to the boom system for boom operation.

[0016] In a possible implementation, the second system is an auxiliary drive system; the transmission mechanism has a third transmission mode; in the third transmission mode, the second power take-off is driven to engage with the power output shaft of the transmission mechanism to transmit the power of the drive motor to the auxiliary drive system for material waiting operations.

[0017] In a possible implementation manner, a first power take-off and a second power take-off are provided in the transmission mechanism; the first power take-off is connected to the first system and the second system; and the second power take-off is connected to the third system.

[0018] In a possible implementation manner, the first power take-off is connected to the first system, and the first system is connected to the second system.

[0019] In a possible implementation, the power system further includes a power unit, the power unit includes an all-in-one module, the drive motor is connected to the all-in-one module; the all-in-one module is used to control the operation of the drive motor.

[0020] In a possible implementation, the power unit further includes a high-voltage box, and the high-voltage box is connected to the multi-in-one module; the high-voltage box is configured to control the multi-in-one module to supply power to the drive motor.

[0021] In a possible implementation, the power unit further includes a battery, and the battery is connected to the high-voltage box to supply electrical energy to the drive motor through the high-voltage box and the multi-in-one module.

[0022] In a possible implementation, the power unit further includes a range extender, and the range extender is connected to the high-voltage box to supply electrical energy to the drive motor through the high-voltage box and the multi-in-one module.

[0023] In a second aspect, an embodiment of the present application provides a construction machine, and the construction machine is provided with the power system as described in the first aspect and / or various possible power systems of the first aspect.

[0024] The power system and the construction machine provided by the embodiments of the present application include a drive motor with a through shaft, an upper-mounted operation system, and a driving system. In the first operation mode of the drive motor, the first output end of the through shaft is communicated with the upper-mounted operation system to drive the upper-mounted operation system to perform upper-mounted operations. At the same time, the second output end of the through shaft is disengaged from the driving system; in the second operation mode of the drive motor, the second output end of the through shaft is communicated with the driving system to drive the driving system to operate. At the same time, the first output end of the through shaft is disengaged from the upper-mounted operation system. In this way, the power system uses one drive motor to realize the drive of the driving system or the drive of the upper-mounted operation system. Compared with the prior art in which two sets of drive motors are provided for driving respectively, not only the occupied space is reduced, but also the cost is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0026] Figure 1 Structural schematic of a power system provided by the present application Figure 1 ;

[0027] Figure 2 Structural schematic of a power system provided by the present application Figure 2 ;

[0028] Figure 3 Structural schematic of a power system provided by the present application Figure 3 ;

[0029] Figure 4 Structural schematic of a power system provided by the present application Figure 4 ;

[0030] Figure 5 Structural schematic of a power system provided for this application Figure 5 ;

[0031] Figure 6 Structural schematic of a power system provided for this application Figure 6 ;

[0032] Figure 7 Structural schematic of a construction machine provided for this application;

[0033] Figure 8 Flow schematic of a driving method for a boom system provided for this application Figure 1 ;

[0034] Figure 9 Flow schematic of a driving method for a boom system provided for this application Figure 2 ;

[0035] Figure 10 Structural schematic of a driving device for a boom system provided for this application;

[0036] Figure 11 Structural schematic of an electronic device provided for this application.

[0037] Reference numerals:

[0038] 10: Construction machine;

[0039] 100: Controller;

[0040] 101: Power system;

[0041] 102: Driving motor;

[0042] 103: Upper mounting operation system;

[0043] 104: Traveling system;

[0044] 105: First output end;

[0045] 106: Second output end;

[0046] 107: Transmission mechanism;

[0047] 108: First system;

[0048] 109: Second system;

[0049] 110: Third system;

[0050] 111: First power take-off;

[0051] 112: Second power take-off;

[0052] 113: Third power take-off

[0053] 114: Power unit

[0054] 115: Multi-in-one module

[0055] 116: Battery

[0056] 117: Range extender

[0057] 118: High-voltage box

[0058] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed description of the specific embodiments

[0059] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0060] In the related art, the upper body operation and driving working modes of construction machinery are usually mutually exclusive. Therefore, two sets of drive motors are usually required in construction machinery, which are respectively used for driving the vehicle and the upper body operation. Specifically, the construction machinery includes 2 drive motors, an upper body operation system, and a gearbox. Among them, drive motor 1 is connected to the upper body operation system, and drive motor 2 is connected to the gearbox; drive motor 1 is used to drive the gearbox to drive the construction machinery to travel; drive motor 2 is used to drive the upper body operation system to drive the construction machinery to perform upper body operations. However, this method not only occupies a large space but also has a high cost.

[0061] In view of this, the present application provides a power system, which uses a drive motor with a through-shaft to be respectively connected to the driving system and the upper body operation system. Thus, it is possible to use one drive motor to realize the driving of the construction machinery for traveling and upper body operations, reducing the occupied space and lowering the cost at the same time.

[0062] The following uses specific embodiments to detail the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the drawings.

[0063] Figure 1 Structural schematic of a power system provided for this application Figure 1 As Figure 1 shown, the power system 101 includes a drive motor 102, an upper mounting operation system 103, and a traveling system 104; the drive motor 102 is provided with a through shaft, and a first output end 105 and a second output end 106 are arranged at both ends of the through shaft; the upper mounting operation system 103 includes a first system, a second system, and a third system; wherein, the first output end 105 of the through shaft is connected to the first system, the second system, and the third system in the upper mounting operation system 103, and the second output end 106 of the through shaft is connected to the traveling system 104.

[0064] The traveling system 104 is used to drive the construction machinery to travel. The traveling system 104 may include a gearbox. Taking the gearbox as an example, the gearbox can be used to change the rotational speed and torque output by the drive motor 102 to meet the requirements of the construction machinery under different traveling conditions. Among them, the construction machinery may be a pump truck (or called a concrete pump truck), a wet shotcreting machine, a fire truck, etc., and the embodiments of this application do not make limitations here. Optionally, the power system may further include a gearbox, wherein the second output end of the through shaft is connected to the gearbox, and the gearbox is connected to the traveling system.

[0065] The upper mounting operation system 103 is the working system for the upper mounting operation of the construction machinery. Taking the construction machinery as a concrete pump truck as an example, based on different operation tasks, the first system, the second system, and the third system in the upper mounting operation system 103 may be a pumping system, a boom system, and an auxiliary drive system, and the embodiments of this application do not make limitations on the corresponding relationship between the first system, the second system, the third system and the pumping system, the boom system, and the auxiliary drive system here.

[0066] Exemplarily, the first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system.

[0067] Or, the first system is an auxiliary drive system, the second system is a pumping system, and the third system is a boom system.

[0068] Or, the first system is a pumping system, the second system is a boom system, and the third system is an auxiliary drive system.

[0069] Or, the first system is a boom system, the second system is a pumping system, and the third system is an auxiliary drive system.

[0070] Or, the first system is a boom system, the second system is an auxiliary drive system, and the third system is a pumping system.

[0071] Or, the first system is an auxiliary drive system, the second system is a boom system, and the third system is a pumping system.

[0072] The upper mounting operation system 103 can complete corresponding operation actions based on the power transmitted by the drive motor 102. For example, it can perform pumping operations or boom operations, etc. It should be noted that the structure of the upper mounting operation system in the embodiments of the present application is not limited. For example, it can include structures such as a concrete pump, a conveying pipeline, a hopper boom, a hydraulic system, a hook, etc.

[0073] The pumping system is a device used to transport fluid materials such as concrete from the ground to high places or far distances. The pumping system generally includes components such as a concrete cylinder, a piston, a conveying pipeline, a distribution valve, a hopper, etc. The piston reciprocates in the concrete cylinder to achieve the suction and discharge of concrete. The distribution valve is used to control the flow direction of concrete between different pipelines. The hopper is used to store the concrete to be transported, and the conveying pipeline transports the concrete from the hopper to the operation point. After receiving power drive, the pumping system sucks in and pressurizes the concrete, and then transports the concrete to the designated position through the pipeline, realizing efficient and continuous material transportation and meeting the requirements of operations such as concrete pouring in building construction.

[0074] The boom system is a device used to extend and position the pumping pipeline so that the concrete can be accurately transported to the pouring position. The boom system generally includes components such as multiple boom sections, connection hinge points, oil cylinders, a slewing mechanism, etc. The boom sections are connected to each other through the connection hinge points and can perform extension and folding actions under the drive of the oil cylinders; the slewing mechanism is installed at the bottom of the boom, enabling the boom to rotate in the horizontal direction, thereby realizing all-round placing operations. After receiving power drive, the boom system extends, folds, and rotates the boom and other actions to extend the pumping pipeline to different positions and heights, expanding the concrete pouring range and improving the flexibility and convenience of construction.

[0075] The auxiliary drive system is mainly used to assist the power system 101 to better complete its work and at the same time provide power for some auxiliary equipment on the vehicle. Exemplarily, when the pumping system is working, the auxiliary drive system can provide additional power support for the pumping system, especially when pumping high-viscosity concrete or long-distance pumping, to help the pumping system transport concrete more stably and efficiently. For example, an auxiliary hydraulic pump can be added to provide higher pressure for the pumping cylinder to ensure that the concrete can be smoothly transported from the hopper to the conveying pipeline and reach the pouring position. The auxiliary drive system can also provide power for other auxiliary equipment on the construction machinery, such as the water pump for cleaning the pipeline and the vehicle body, the fan for cooling the hydraulic system, the generator for lighting, etc. These auxiliary equipment play an important role in ensuring the normal operation and maintenance of the construction machinery. For example, after the work is completed, the cleaning water pump uses the power provided by the auxiliary drive system to pressurize the water in the water tank and transport it through the pipeline to each part that needs to be cleaned to clean the concrete conveying pipeline and the vehicle body to prevent the concrete from remaining and solidifying. It should be noted that the embodiments of the present application do not limit the functions and structures of the auxiliary drive system.

[0076] The drive motor 102 is the power source for driving the construction machinery to perform superstructure operations or travel. The drive motor 102 is a motor with a through-shaft. The through-shaft is a shaft that runs through the interior of the motor. The through-shaft is provided with a first output end 105 and a second output end 106 for connecting to different components. The output end part is provided with interface structures suitable for connecting to the superstructure operation system 103 and the travel system 104, such as splines, couplings, electromagnetic control devices or hydraulic clutch mechanisms, etc., in order to achieve reliable mechanical connection and power transmission. It should be noted that the embodiments of the present application do not limit the connection method between the output end of the through-shaft and other components.

[0077] The drive motor 102 can include a first operation mode or a second operation mode. Among them, the first operation mode is used to represent the construction machinery performing superstructure operations, and the second operation mode is used to represent the construction machinery performing travel operations.

[0078] In the first operation mode, the first output end 105 of the through-shaft is connected to the superstructure operation system 103 to drive the superstructure operation system 103 to perform superstructure operations; at the same time, the second output end 106 of the through-shaft is disengaged from the travel system 104. Exemplarily, the drive motor 102 can drive the interface structure of the first output end 105 of the through-shaft, such as an electromagnetic control device or a hydraulic clutch mechanism, to gradually establish a firm connection between the first output end 105 of the through-shaft and the superstructure operation system 103, and drive the interface structure of the second output end 106 of the through-shaft to disengage the second output end 106 of the through-shaft from the travel system 104. After the connection is established, the superstructure operation system 103 receives the power transmitted by the drive motor 102 through the first output end 105 of the through-shaft and performs superstructure operations.

[0079] In the second operation mode, the second output end 106 of the through shaft is connected to the traveling system 104 to drive the traveling system 104 to operate. At the same time, the first output end 105 of the through shaft is disconnected from the upper mounting operation system 103. Exemplarily, the drive motor 102 can drive the interface structure of the first output end 105 of the through shaft to disconnect the first output end 105 of the through shaft from the upper mounting operation system 103, and drive the interface structure of the second output end 106 of the through shaft to gradually establish a firm connection between the second output end 106 of the through shaft and the traveling system 104. After the connection is established, the traveling system 104 receives the power transmitted by the drive motor 102 through the second output end 106 of the through shaft, adjusts the output speed and torque through different gear combinations inside, and transmits the appropriate power to the drive wheels of the vehicle to achieve traveling functions such as starting, accelerating, decelerating, and climbing of the construction machinery.

[0080] The power system provided by the embodiment of the present application includes a drive motor with a through shaft, an upper mounting operation system, and a traveling system. In the first operation mode of the drive motor, the first output end of the through shaft is connected to the upper mounting operation system to drive the upper mounting operation system to perform upper mounting operations. At the same time, the second output end of the through shaft is disconnected from the traveling system; in the second operation mode of the drive motor, the second output end of the through shaft is connected to the traveling system to drive the traveling system to operate. At the same time, the first output end of the through shaft is disconnected from the upper mounting operation system. In this way, the power system uses one drive motor to realize the drive of the traveling system or the drive of the upper mounting operation system. Compared with the prior art in which two sets of drive motors are set up for driving respectively, not only the occupied space is reduced, but also the cost is lowered.

[0081] Figure 2 Schematic structure of a power system provided by the present application Figure 2 As Figure 2 shown, the power system 101 further includes a transmission mechanism 107; the transmission mechanism 107 is arranged between the drive motor 102 and the upper mounting operation system 103; the first output end 105 of the through shaft is connected to the transmission mechanism 107, and the transmission mechanism 107 is connected to the first system, the second system, and the third system of the upper mounting operation system 103.

[0082] The transmission mechanism 107 is a mechanism for power transmission. The type of this transmission mechanism can be, for example, a gear transmission mechanism, a chain transmission mechanism, a belt transmission mechanism, etc., which are not limited in the embodiment of the present application. Taking the gear transmission mechanism as an example, the gear transmission mechanism includes a plurality of meshing gears, including a driving gear and a driven gear. The driving gear is installed on the first output end 105 of the through shaft and rotates with the through shaft. The driven gear meshes with the driving gear and is connected to the first system, the second system, and the third system of the upper mounting operation system 103 through a gear shaft. The principles of other types of transmission mechanisms are similar thereto and will not be exemplified one by one here.

[0083] In the first operating mode of the drive motor 102, the transmission mechanism 107 can be used to transmit the power of the drive motor to at least one of the first system, the second system, and the third system.

[0084] Transmitting the power of the drive motor to at least one of the first system, the second system, and the third system in the upper body working system through the transmission mechanism can have the following advantages:

[0085] (1) The transmission mechanism can adjust the speed and torque of the drive motor to appropriate values required by at least one system of the upper body working system through different transmission ratios. For example, in concrete pumping operations, lower speeds and larger torques may be required to push the concrete. The transmission mechanism can convert the high-speed and low-torque output of the drive motor into a low-speed and high-torque output suitable for pumping, improving the operation efficiency and effect.

[0086] (2) The transmission mechanism can flexibly change the direction and path of power transmission, making the spatial layout of the drive motor and the upper body working system more reasonable. In the limited space of construction machinery, the drive motor can be installed in a more appropriate position, and then the power is transmitted to the parts that need to work through the transmission mechanism, optimizing the overall vehicle structure and improving space utilization.

[0087] (3) As an independent component, the transmission mechanism is convenient for separate inspection, maintenance, or replacement during equipment maintenance and repair, reducing the maintenance cost and difficulty. Moreover, the existence of the transmission mechanism makes the connection between the drive motor and the upper body working system more flexible, facilitating the replacement of different types or specifications of upper body working systems to adapt to different work tasks and working conditions. According to the parameters of the new upper body working system, a suitable transmission mechanism can be selected without major modifications to the drive motor, improving the versatility and compatibility of the equipment.

[0088] In some embodiments, Figure 3 The structural schematic of a power system provided by the present application Figure 3 is shown in Figure 3 As shown, the systems in the upper body working system 103 include a first system 108, a second system 109, and a third system 110; a first power take-off (PTO) 111 and a second power take-off 112 are provided in the transmission mechanism 107. The first power take-off 111 is connected to the first system 108 and the second system 109; the second power take-off 112 is connected to the third system 110.

[0089] A power take-off is a device that can extract the power of a power source and transfer it to other devices or systems that require power. A PTO typically includes components such as gears, shafts, and clutches, which are connected to the output shaft of the power source and transfer the power to the required location through gear transmission or other transmission methods. The power take-off is used to achieve power distribution. By taking power through the PTO, the power of the drive motor 102 can be distributed to the first system, the second system, and the third system respectively, allowing them to operate independently according to their respective working requirements and achieve different functions.

[0090] In some possible implementation manners, the first system 108 and the second system 109 each have their corresponding power pumps, such as gear pumps. The gear pumps of the first system 108 and the second system 109 can be driven by the first power take-off 111, and then the first system 108 and the second system 109 can be driven to work.

[0091] In some possible implementation manners, Figure 4 is a schematic diagram of the structure of a power system provided by this application Figure 4 , as Figure 4 shown, the first power take-off 111 can be connected to the first system 108, and the first system 108 is connected to the second system 109. In this implementation manner, the first system 108 and the second system 109 can be connected through a power transmission shaft or a power pump. The power transmitted to the first system 108 through the first power take-off 111 can be transmitted to the second system 109 based on the power transmission shaft or the power pump.

[0092] Taking a concrete pump truck in construction machinery as an example, in this implementation manner, the first system 108 can be any one of a pumping system, a boom system, or an auxiliary drive system, and the second system 109 can be another system different from the first system. Taking the first system as a pumping system and the second system as an auxiliary drive system as an example, the first system 108 can operate based on the power transmitted by the first power take-off 111 and continue to transmit the power to the second system 109 to drive the second system 109 to operate; it can also be that the first system 108 continues to transmit the power transmitted by the first power take-off 111 to the second system 109 to drive the second system 109 to operate, but the first system 108 itself does not operate.

[0093] Through this method, the power take-off in the transmission mechanism is used to provide power for the first system, the second system, and the third system, realizing power decoupling.

[0094] In some embodiments, Figure 5 is a schematic diagram of the structure of a power system provided by this application Figure 5 , as Figure 5As shown, the system in the upper mounting operation system 103 includes a first system 108, a second system 109, and a third system 110; a first power take-off (PTO) 111, a second power take-off 112, and a third power take-off 113 are provided in the transmission mechanism 107; wherein, the first power take-off 111 is connected to the first system 108, the second power take-off 112 is connected to the second system 109, and the third power take-off 113 is connected to the third system 110.

[0095] In this implementation, the first power take-off 111 is connected to the first system 108, and can obtain power from the first output end 105 of the through-shaft of the drive motor 102 and transmit the power to the first system 108; the second power take-off 112 is connected to the second system 109, and can obtain power from the first output end 105 of the through-shaft of the drive motor 102 and transmit the power to the second system 109; the third power take-off 113 is connected to the third system 110, and can obtain power from the first output end 105 of the through-shaft of the drive motor 102 and transmit the power to the third system 110.

[0096] In this way, the power take-offs in the transmission mechanism are used to provide power for the first system, the second system, and the third system respectively. While achieving power decoupling, it is possible to accurately distribute power to each system and achieve separate control and non-interference of the power of each system. Moreover, it is convenient for the expansion of the upper mounting operation system.

[0097] In this implementation, the transmission mechanism has multiple transmission modes. The power take-offs for power transmission in each transmission mode are different, and thus the corresponding operation types of the upper mounting operation system are different. Taking a concrete pump truck in construction machinery as an example, the transmission modes can include, for example, a first transmission mode, a second transmission mode, and a third transmission mode. Among them, the first transmission mode means that the transmission mechanism transmits power to the first power take-off and the second power take-off to achieve pumping operation; the second transmission mode means that the transmission mechanism transmits power to the third power take-off to achieve boom operation; the third transmission mode means that the transmission mechanism transmits power to the second power take-off to achieve standby operation. It should be noted that the number and content of the transmission modes in the embodiments of the present application are not limited.

[0098] Exemplarily, the transmission mechanism 107 has a universal power output shaft, and an interface mechanism is correspondingly provided for each power take-off. This interface mechanism is used to engage or disengage with the power output shaft of the transmission mechanism 107. This interface mechanism can be a clutch or a gear mechanism. The type of the clutch is not limited in the embodiments of the present application. For example, it can be an electromagnetic clutch or a wet multi-disc clutch.

[0099] Specifically, taking the construction machinery being a concrete pump truck as an example, (1) in the first transmission mode of the transmission mechanism, the first system is a pumping system, and the second system is an auxiliary drive system. The first power take-off 111 and the second power take-off 112 are respectively engaged with the power output shaft of the transmission mechanism 107 to transmit the power of the drive motor 102 to the pumping system and the auxiliary drive system for pumping operations.

[0100] (2) When the transmission mechanism is in the second transmission mode, the third system is the boom system, and the third power take-off 113 is engaged with the power output shaft of the transmission mechanism 107 to transmit the power of the drive motor 102 to the boom system to perform boom operations.

[0101] (3) In the third transmission mode of the transmission mechanism, the second system is an auxiliary drive system, and the second power take-off 112 is engaged with the power output shaft of the transmission mechanism 107 to transmit the power of the drive motor 102 to the auxiliary drive system for material waiting operation.

[0102] In this way, the power take-off can accurately distribute power to the systems actually needed, and only the systems that need to work can obtain power, reducing unnecessary energy loss and component wear. For example, when the boom is operating, only the third power take-off is engaged, allowing the boom system to work alone, and other systems are in a non-working state, reducing overall energy consumption and extending the service life of non-working parts.

[0103] The power system provided by the embodiment of the present application connects the first output end of the through shaft of the driving motor to at least one of the first system, the second system, and the third system of the upper body operation system through a transmission mechanism, and in the first operation mode of the driving motor, based on the different transmission modes of the transmission mechanism, transmits the power output by the driving motor to at least one of the first system, the second system, and the third system of the upper body operation system to drive the upper body operation system to perform upper body operation. In this way, the transmission mechanism can be used to flexibly change the direction and path of power transmission, and the power output to the upper body operation system can be controlled, which is convenient for the maintenance and expansion of the power system.

[0104] Figure 6 A schematic diagram of a power system provided for this application Figure 6 . refer to Figure 6 As shown, the power system 101 also includes a power unit 114, and the drive motor 102 is connected to the all-in-one module 115 in the power unit 114; wherein the power unit 114 also includes a battery 116, a range extender 117, and a high-voltage box 118; the battery 116, the range extender 117, and the all-in-one module 115 are respectively connected to the high-voltage box 118.

[0105] The power unit 114 is a device that provides electrical energy to the power system 101 .

[0106] The multi-in-one module 115 is a power electronic device integrating multiple functions. It integrates various different circuit functions in one module, can transmit electrical energy to the drive motor, and can also achieve comprehensive control and management of electrical energy. The multi-in-one module 115 may include power electronic devices, control circuits, heat dissipation devices, etc. The power electronic devices are used to process high-current and high-voltage power conversion, such as AC-DC conversion; the control circuit is responsible for implementing various control algorithms to precisely control the operation of the drive motor; the heat dissipation device is used to dissipate the heat generated by the power electronic devices during operation to ensure the normal operating temperature of the module. It should be noted that the structure and function of the multi-in-one module in the embodiments of the present application are not limited. Specifically, the multi-in-one module can receive instructions from the controller. In response to the instruction, the multi-in-one module can generate a voltage signal and send the voltage signal to the drive motor connected to the multi-in-one module to make the drive motor work. Among them, the instruction can indicate the working state of the drive motor. Among them, the working state of the drive motor includes but is not limited to: start and stop, speed of the drive motor, torque of the drive motor, power of the drive motor.

[0107] The battery 116 is used to store electrical energy input by the range extender or an external charging device, and provides direct current to the drive motor 102, the multi-in-one module 115, and other electrical equipment during the operation of the power system 101 to drive the construction machinery to travel and support the work of the upper-mounted operation system. It should be noted that the type of the battery in the embodiments of the present application is not limited.

[0108] The range extender 117 is a device used to increase the vehicle's cruising range. It usually includes an engine or other power devices and starts when the battery power is insufficient to provide electrical energy for the drive motor.

[0109] The high-voltage box 118 is a device for centralized management and distribution of high-voltage electrical energy. It usually includes electrical components such as high-voltage busbars, contactors, fuses, relays, capacitors, and inductors. The high-voltage box 118 is used for distribution and transmission of high-voltage electrical energy, safely and reliably delivering the high-voltage direct current generated by the battery and the range extender to devices that require high-voltage power such as the multi-in-one module. At the same time, it can also achieve protection, monitoring, and control of the high-voltage circuit, such as overcurrent protection, overvoltage protection, and leakage protection, to ensure the safe operation of the entire power system.

[0110] Optionally, a charging port can be set in the high-voltage box. The charging port can be connected to an external AC mains or a mobile power vehicle to charge the battery or directly drive the drive motor 102 through the multi-in-one module.

[0111] The power system provided by the embodiment of the present application, the power unit includes an all-in-one module, a battery, a range extender, and a high-voltage box. The battery, the range extender, and the all-in-one module are respectively connected to the high-voltage box. The drive motor is connected to the all-in-one module in the power unit. The battery and the range extender can provide electrical energy for the drive motor of the power system. In this way, the battery and the range extender can jointly provide electrical energy for the drive motor to meet the requirements of driving or upper-mounted operation. For example, when the drive power required by the drive motor is greater than the power supply of the battery, the range extender can generate electricity to realize parallel power supply with the battery to meet the power requirement of the drive motor.

[0112] Figure 7 It is a schematic structural diagram of a construction machinery provided by the present application. As Figure 7 shown, the power system 101 in the foregoing embodiment is provided in the construction machinery 10. Optionally, a controller 100 is provided in the construction machinery 10. The controller 100 is respectively connected to the drive motor 102 in the power system 101 and the transmission mechanism 107 in the power system 101;

[0113] The controller 100 is configured to send control instructions to the drive motor 102 and the transmission mechanism 107, and the control instructions are used to indicate the operation mode of the drive motor. The controller can be an electronic device with processing capabilities. For example, it can be an externally provided electronic control unit (ECU), a field programmable gate array (FPGA), etc., or it can be a controller already existing in the power system 101. For example, it can be a transmission control unit (TCU) or a vehicle control unit (VCU), etc. The embodiment of the present application does not make a limitation here, and it can be specifically set according to actual needs.

[0114] Exemplarily, the controller 100 can generate control instructions corresponding to the operation instructions in response to the user's operation instructions, wherein the operation instructions indicate different operation modes of driving or upper-mounted operation.

[0115] The construction machinery provided by the embodiment of the present application includes a controller and a power system. By controlling the power system through the controller, it is possible to drive the construction machinery to travel or drive the upper-mounted operation system to perform upper-mounted operations based on one drive motor. Compared with the prior art in which two sets of drive motors are respectively provided for driving, not only the occupied space is reduced, but also the cost is lowered.

[0116] In some embodiments, a construction machine is provided with a power system and a controller. The power system includes a drive motor and an upper-mounted operation system. The upper-mounted operation system includes a hydraulic system and a boom system. One end of the drive motor is connected to the hydraulic system, and the hydraulic system is connected to the boom system. The drive motor drives the boom system to perform boom operations through the hydraulic system. Next, how the controller controls the rotational speed of the drive motor to drive the boom system will be described.

[0117] Figure 8 Flow schematic of the driving method for the boom system provided by this application Figure 1 , referring to Figure 8 As shown, the method includes:

[0118] S201. Receive the target speed of the boom system.

[0119] Exemplarily, the above-mentioned target speed represents the desired movement speed of each boom section of the boom system. For example, a construction machine is usually provided with an operation handle or a human-machine interaction interface, and the controller can receive the target speed input by the user through the operation handle or the human-machine interaction interface. Taking the operation handle as an example, the opening degree of the operation handle is correspondingly set with the speed of the boom section of the boom system. The maximum opening degree is the maximum speed of the boom section. Taking the maximum speed of 4 m / s as an example, when the opening degree is 50%, the target speed is 2 m / s. Therefore, the controller can obtain the opening degree of the operation handle to receive the target speed of the boom system.

[0120] It can be understood that the boom system may include multiple boom sections, and each boom section may correspond to a separate operation handle, and thus the target speed of each boom section can be received. When it is not necessary to control this boom section, the target speed can be 0. It should be noted that the number of boom sections controlled in the embodiments of this application is not limited.

[0121] S202. Control the motor speed of the drive motor according to the correspondence between the target speed of the boom system and the flow rate of the hydraulic system, and the correspondence between the flow rate of the hydraulic system and the motor speed of the drive motor, so as to drive the boom system to perform boom operations.

[0122] Exemplarily, the flow rate of the hydraulic system represents the volume of hydraulic oil output by the hydraulic pump per unit time. The motor speed of the drive motor represents the rotational speed of the drive motor rotor, and this motor speed can determine the input speed of the hydraulic pump.

[0123] In one example, the controller can preset the correspondence between the target speed of each boom section of the boom system and the flow rate required for this boom section. Then, according to the target speed of each boom section, the flow rate required for each boom section can be determined, and the flow rates required for each boom section are summed to obtain the flow rate of the hydraulic system. That is, there is a correspondence between the flow rate of the hydraulic system and the target speed of each boom section of the boom system.

[0124] Optionally, after the boom system starts to work, the speed difference between the current speed and the target speed of the boom system can be determined. Furthermore, based on the corresponding relationship between the speed difference and the flow rate of the hydraulic system, the corresponding relationship between the target speed and the flow rate of the hydraulic system can be constructed.

[0125] It can be understood that the output flow rate of the hydraulic pump is proportional to the rotational speed of the hydraulic pump, and there is a fixed transmission ratio between the rotational speed of the hydraulic pump and the rotational speed of the driving motor. Therefore, there is a corresponding relationship between the flow rate of the hydraulic system and the rotational speed of the driving motor. In other words, based on the ratio between the flow rate of the hydraulic system and the rotational speed of the hydraulic pump of the hydraulic system, and the ratio relationship between the rotational speed of the hydraulic pump and the rotational speed of the driving motor, the corresponding relationship between the flow rate of the hydraulic system and the rotational speed of the driving motor can be constructed.

[0126] Therefore, based on the corresponding relationship between the target speed of the boom system and the flow rate of the hydraulic system, after determining the flow rate of the hydraulic system, the controller can determine the motor speed based on the corresponding relationship between the flow rate of the hydraulic system and the rotational speed of the driving motor, and then control the rotational speed of the driving motor, and then transmit the power to the boom system through the hydraulic system to drive the boom system to perform boom operations.

[0127] In the driving method of the boom system in the construction machinery provided by the embodiments of the present application, in a construction machinery where one end of the driving motor is connected to the hydraulic system and the hydraulic system is connected to the boom system, after receiving the target speed required by the boom system, the controller can control the rotational speed of the driving motor through the corresponding relationship between the target speed of the boom system and the flow rate of the hydraulic system, and the corresponding relationship between the flow rate of the hydraulic system and the rotational speed of the driving motor, and then transmit the power to the boom system through the hydraulic system to realize the driving of the boom system. In this way, the controller can drive the hydraulic system by controlling the rotational speed of the driving motor to realize the driving of the boom system, without going through multiple power transmission links such as a gearbox, improving the energy utilization rate. At the same time, through the closed-loop control logic of target speed → hydraulic flow → motor speed, the output speed of the driving motor can be adjusted in real time according to the actual operation requirements of the boom system; moreover, the corresponding relationship between the target speed, the flow rate of the hydraulic system and the motor speed can improve the speed control accuracy and response speed of the boom movement.

[0128] Figure 9 It is a schematic flow chart of the driving method of the boom system provided by the present application Figure 2 , this embodiment is based on Figure 8 On the basis of the embodiment, the driving method of the boom system is described in detail. The method includes:

[0129] S301. Receive the target speed of the boom system.

[0130] It should be noted that this step can refer to the description of the foregoing step S201 and will not be elaborated here.

[0131] S302. Determine the flow rate of the hydraulic system according to the target speed of the boom system and the corresponding relationship between the target speed of the boom system and the flow rate of the hydraulic system.

[0132] In some possible implementation manners, when the boom system is not started, the flow rate of the hydraulic system can be directly determined according to the target speed of the boom system and the corresponding relationship between the target speed of the boom system and the flow rate of the hydraulic system. By this means, a rough flow rate of the hydraulic system can be quickly determined before the boom movement starts, and then the motor speed can be determined based on this flow rate of the hydraulic system, enabling the motor to quickly respond to the requirements of the boom movement, reducing the response time of the system, and improving the response speed of the boom movement.

[0133] In some possible implementation manners, after the boom system starts to operate, the current speed of the boom system can be obtained; the speed difference between the target speed and the current speed can be determined; and the flow rate of the hydraulic system can be determined according to the speed difference and the corresponding relationship between the speed difference and the flow rate of the hydraulic system.

[0134] Exemplarily, the current speed of the boom system represents the current movement speeds of each boom section. In other words, it can characterize the speed of the boom rotation. The current speed can be collected by speed sensors installed on each boom section; or it can be obtained by acquiring the current tilt angle of the boom system; the current tilt angle change amount can be determined according to the current tilt angle; and the current speed of the boom system can be determined according to the current tilt angle change amount. Among them, the above-mentioned tilt angle change amount reflects the amplitude and position change conditions of the boom movement. Specifically, the controller can determine the current tilt angle change amount based on the tilt angle at the current moment and the tilt angle at the previous moment; and then based on the numerical differentiation method, according to the current tilt angle change amount Δθ and the sampling time interval Δt, the angular velocity ω can be determined as the current speed according to the formula ω = Δθ / Δt.

[0135] Optionally, after the controller obtains the tilt angle, the obtained tilt angle can be filtered to obtain a more accurate tilt angle. For example, the filtering method can be Kalman filtering.

[0136] Further, the flow difference can be determined based on the speed difference and the corresponding relationship between the speed difference and the flow difference; the flow of the hydraulic system can be updated according to the flow difference and the historical flow of the hydraulic system. The flow difference represents the flow value required to reach the target speed from the current speed, and the historical flow of the hydraulic system can be the flow of the hydraulic system at the previous moment.

[0137] As mentioned above, there is a corresponding relationship between the target speed of each boom section and the flow required for that boom section. Furthermore, the corresponding relationship between the speed difference and the flow difference of each boom section can be preset. After determining the current speed of each boom section of the boom system, the speed difference between the current speed of each boom section and the target speed of the corresponding boom can be determined. Furthermore, based on the corresponding relationship between the speed difference and the flow difference of each boom section, the flow difference of each boom section can be determined, and based on the flow difference of each boom section and the historical flow of the hydraulic system, the flow of the hydraulic system can be determined. For example, the corresponding relationship between the speed difference and the flow Q of the hydraulic system can be expressed as: where Q0 represents the historical flow of the hydraulic system; Δω represents the speed difference; K represents the equivalent area coefficient of the cylinder, which is a preset value; i represents the boom section number, with a value ranging from 1 to N, and N is the total number of boom sections.

[0138] Optionally, the sum of the flow differences of each boom section can be determined based on the flow differences of each boom section. When the sum of the flow differences of each boom section is positive, it indicates that the historical flow of the hydraulic system cannot meet the demand for the boom system to reach the target speed. Then, the sum of the flow differences of each boom section and the historical flow of the hydraulic system are used to update the flow of the hydraulic system. When the sum of the flow differences of each boom section is negative, it indicates that the historical flow of the hydraulic system can meet the demand for some boom sections of the boom system to reach the target speed. The historical flow of the hydraulic system can be kept unchanged. Furthermore, the valve opening of the multi-way valve can be adjusted to increase the valve opening of the boom section with a negative flow difference to increase the flow of that boom section, or to decrease the valve opening of the boom section with a positive flow difference to decrease the flow of that boom section, thereby adjusting the speed of each boom section.

[0139] In some possible implementation manners, the controller can obtain the current inclination change amount of the boom system; determine the flow difference of the hydraulic system according to the speed difference and the current inclination change amount, and the corresponding relationship among the speed difference, the inclination change amount, and the flow difference; and determine the flow of the hydraulic system according to the flow difference of the hydraulic system and the historical flow of the hydraulic system. The flow difference represents the flow value required to reach the target speed from the current speed.

[0140] Exemplarily, based on the correspondence relationship between the speed difference and the flow difference of each of the foregoing boom sections, the influencing factor of the current inclination change amount is added, so that the determined flow difference of each boom section is more accurate. That is, the correspondence relationship between the speed difference of each boom section, the current inclination change amount, and the flow difference can be established. Furthermore, after determining the speed difference between the current speed of each boom section and the target speed of the corresponding boom section, the flow difference of each boom section can be determined based on the correspondence relationship between the speed difference of each boom section, the current inclination change amount, and the flow difference. Based on the flow difference of each boom section and the historical flow of the hydraulic system, the flow of the hydraulic system is determined. For example, the correspondence relationship between the speed difference and the flow Q of the hydraulic system can be expressed as: Wherein, Δω represents the speed difference; K represents the equivalent area coefficient of the oil cylinder, which is a preset value; i represents the number of boom sections, with a value ranging from 1 to N, and N is the total number of boom sections.

[0141] Due to external disturbances (such as wind force, sudden load changes, etc.) and internal system errors (such as sensor errors, transmission errors, etc.), there may be a deviation between the current speed and the target speed of the boom. Through this method, based on the target speed of the boom system, the current speed of the boom system is obtained in real time. Furthermore, based on the speed difference between the target speed and the current speed, the real-time flow of the hydraulic system is determined. Then, based on the real-time flow of the hydraulic system, the rotation speed of the drive motor can be feedback adjusted.

[0142] S303. Determine the motor speed of the drive motor according to the flow of the hydraulic system and the correspondence relationship between the flow of the hydraulic system and the motor speed of the drive motor, and control the drive motor according to the motor speed to drive the boom system to perform boom operations.

[0143] Exemplarily, the controller can determine the rotation speed of the hydraulic pump of the hydraulic system according to the flow of the hydraulic system and a preset ratio value; determine the motor speed of the drive motor according to the rotation speed of the hydraulic pump of the hydraulic system and a preset transmission ratio; wherein, the preset ratio value represents the ratio between the flow of the hydraulic system and the rotation speed of the hydraulic pump of the hydraulic system; the preset transmission ratio represents the ratio relationship between the rotation speed of the hydraulic pump and the motor speed of the drive motor.

[0144] For example, there may be a proportional relationship between the flow Q of the hydraulic system and the rotation speed of the hydraulic pump of the hydraulic system. This proportional relationship may be, for example, Q = n 泵 ×P, where P is a preset ratio value, P is related to the displacement and volumetric efficiency of the hydraulic pump, and is specifically related to the model of the hydraulic pump; n 泵 represents the rotation speed of the hydraulic pump. Furthermore, based on this proportional relationship and the flow of the hydraulic system, the rotation speed of the hydraulic pump can be determined.

[0145] Further, the drive motor drives the hydraulic pump to rotate. Then, based on the transmission ratio between the hydraulic pump and the motor, and the rotational speed of the hydraulic pump, the rotational speed of the drive motor can be determined. Specifically, n 电机 = n 泵 × S, where n 电机 represents the motor speed, S represents the transmission ratio, and S is related to the connection method between the drive motor and the hydraulic system. If the drive motor is directly connected to the hydraulic system, S can be 1; if they are connected through a transmission mechanism, the value of S can be determined according to the gear parameters.

[0146] When the boom system is not started, after the controller determines the flow rate of the hydraulic system, it can determine the rotational speed of the drive motor based on the correspondence between the flow rate of the hydraulic system and the rotational speed of the drive motor, and control the drive motor according to the motor speed to drive the boom system to perform boom operations. In this way, a rough motor speed can be quickly determined before the boom action starts, enabling the motor to quickly respond to the requirements of the boom action, reducing the response time of the system, and improving the response speed of the boom action.

[0147] After the boom system starts operating, after the controller determines the real-time flow rate of the hydraulic system based on the current speed of the boom system, it can determine the real-time rotational speed of the drive motor based on the correspondence between the flow rate of the hydraulic system and the rotational speed of the drive motor, and control the drive motor according to the motor speed to drive the boom system to perform boom operations.

[0148] Optionally, after the controller determines the real-time motor speed, it can determine the speed difference between the real-time motor speed and the current motor speed, and adjust the rotational speed of the drive motor according to the speed difference and the preset Proportional-Integral-Derivative (PID) control algorithm.

[0149] In this way, the controller can perform feedback adjustment on the rotational speed of the drive motor based on the target speed and the current speed, and then adjust the flow rate of the hydraulic system to improve the control accuracy of the boom system. For example, if the target speed has a fluctuation range requirement, in this way, the hydraulic flow rate fluctuation can be controlled within the preset threshold by adjusting the motor speed in real time, thereby ensuring the operation accuracy and stability of the boom operation.

[0150] In the driving method of the boom system in the construction machinery provided by the embodiments of the present application, after receiving the target speed of the boom system, the controller can determine the flow rate of the hydraulic system based on the corresponding relationship between the target speed and the flow rate of the hydraulic system, and determine the motor speed based on the corresponding relationship between the flow rate of the hydraulic system and the motor speed of the driving motor, and control the driving motor based on the motor speed to drive the boom system to perform boom operations.

[0151] In this way, on the one hand, based on the corresponding relationship among the target speed, the flow rate of the hydraulic system, and the motor speed, the motor speed can be quickly determined, enabling the driving motor to output the power required by the boom system, improving the accuracy of power output, ensuring that the driving motor outputs energy as needed, avoiding energy waste, and improving energy utilization efficiency; and transmitting the power required by the boom system through the first power take-off port of the transmission mechanism, enabling the transmission mechanism to transmit energy as needed, avoiding energy waste caused by excessive output, improving energy utilization efficiency, and achieving energy conservation and reducing operating costs on the premise of ensuring the normal operation of the boom system. On the other hand, through the speed difference between the target speed and the current speed, the motor speed can be adjusted in real-time feedback, and then the boom system can execute various actions more accurately according to the target speed, reducing the action deviation caused by system errors and external disturbances, and ensuring the operation accuracy and stability of the boom operation.

[0152] Figure 10 It is a schematic structural diagram of the driving device of the boom system provided by the present application, as Figure 10 shown. The driving device of the boom system can be applied to the controller. The driving device 400 of the boom system provided in this embodiment includes:

[0153] A receiving module 401, configured to receive the target speed of the boom system;

[0154] A control module 402, configured to control the motor speed of the driving motor according to the corresponding relationship between the target speed of the boom system and the flow rate of the hydraulic system, and the corresponding relationship between the flow rate of the hydraulic system and the motor speed of the driving motor, so as to drive the boom system to perform boom operations.

[0155] In some possible implementation manners, the control module 402 is specifically configured to:

[0156] Determine the flow rate of the hydraulic system according to the target speed of the boom system and the corresponding relationship between the target speed of the boom system and the flow rate of the hydraulic system;

[0157] Determine the motor speed of the driving motor according to the flow rate of the hydraulic system and the corresponding relationship between the flow rate of the hydraulic system and the motor speed of the driving motor, and control the driving motor according to the motor speed.

[0158] In some possible implementations, the boom state includes the tilt angle of the boom. The control module 402 is specifically configured to:

[0159] Obtain the current speed of the boom system; and determine the speed difference between the target speed and the current speed;

[0160] Determine the flow rate of the hydraulic system according to the speed difference and the corresponding relationship between the speed difference and the flow rate of the hydraulic system.

[0161] In some possible implementations, the control module 402 is specifically configured to:

[0162] Obtain the current inclination change amount of the boom system;

[0163] Determine the flow rate difference of the hydraulic system according to the speed difference, the current inclination change amount, and the corresponding relationship among the speed difference, the inclination change amount, and the flow rate difference of the hydraulic system; wherein, the flow rate difference represents the flow rate value required to reach the target speed from the current speed;

[0164] Determine the flow rate of the hydraulic system according to the flow rate difference of the hydraulic system and the historical flow rate of the hydraulic system.

[0165] In some possible implementations, the control module 402 is specifically configured to:

[0166] Obtain the current tilt angle of the boom system;

[0167] Determine the current inclination change amount according to the current tilt angle;

[0168] Determine the current speed of the boom system according to the current inclination change amount.

[0169] In some possible implementations, the control module 402 is specifically configured to:

[0170] Determine the rotational speed of the hydraulic pump of the hydraulic system according to the flow rate of the hydraulic system and a preset ratio value; wherein, the preset ratio value represents the ratio between the flow rate of the hydraulic system and the rotational speed of the hydraulic pump of the hydraulic system;

[0171] Determine the motor speed of the drive motor according to the rotational speed of the hydraulic pump of the hydraulic system and a preset transmission ratio; wherein, the preset transmission ratio represents the proportional relationship between the rotational speed of the hydraulic pump and the motor speed of the drive motor.

[0172] In some possible implementations, the device further includes a construction module for:

[0173] According to the corresponding relationship between the speed difference and the flow rate of the hydraulic system, construct the corresponding relationship between the target speed of the boom system and the flow rate of the hydraulic system; wherein, the speed difference is the speed difference between the target speed of the boom system and the current speed of the boom system.

[0174] In some possible implementation manners, a construction module is configured to:

[0175] According to the ratio between the flow rate of the hydraulic system and the rotational speed of the hydraulic pump of the hydraulic system, and the ratio relationship between the rotational speed of the hydraulic pump and the rotational speed of the drive motor, construct the corresponding relationship between the flow rate of the hydraulic system and the rotational speed of the drive motor.

[0176] In some possible implementation manners, the construction machinery further includes a transmission mechanism, and the transmission mechanism is arranged between the drive motor and the hydraulic system; the drive motor transmits power to the hydraulic system through the transmission mechanism to drive the boom system.

[0177] The driving device of the boom system in the construction machinery provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, and will not be elaborated here in this embodiment.

[0178] Figure 11 It is a schematic structural diagram of the electronic device provided in this application. As Figure 11 shown, the electronic device 500 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the electronic device 500 further includes a communication component 503. Among them, the processor 501, the memory 502, and the communication component 503 are connected through a bus. The electronic device may be the aforementioned controller.

[0179] In the specific implementation process, at least one processor 501 executes the computer-executable instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0180] The specific implementation process of the processor 501 can refer to the above method embodiment, and its implementation principle and technical effect are similar, and will not be elaborated here in this embodiment.

[0181] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU for short), or other general-purpose processors, digital signal processors (DSP for short), application specific integrated circuits (ASIC for short), etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by the execution of the hardware processor, or implemented by the combination of hardware and software modules in the processor.

[0182] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk memory.

[0183] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

[0184] This application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0185] This application also provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the processor executes the computer-executable instructions, the above method is implemented.

[0186] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk or an optical disc. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0187] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an Application Specific Integrated Circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0188] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the couplings or direct couplings or communication connections shown or discussed between each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms.

[0189] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0190] Furthermore, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can physically exist alone, or two or more units can be integrated in one unit.

[0191] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs.

[0192] Those of ordinary skill in the art will understand that all or part of the steps to implement the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0193] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed by the present invention. It is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A power system, characterized in that, It includes a driving motor with a through shaft, an upper body operation system and a travel system; the two ends of the through shaft of the driving motor are provided with a first output end and a second output end; the upper body operation system includes a first system, a second system, and a third system; Wherein, the first output end is connected to the first system, the second system, and the third system in the upper load operation system, and the second output end is connected to the driving system; The drive motor includes a first operating mode or a second operating mode. In the first operating mode, the first output end is connected to the upper installation operating system to drive the upper installation operating system to perform upper installation operations, and the second output end is disconnected from the travel system; in the second operating mode, the second output end is connected to the travel system to drive the travel system to operate, and the first output end is disconnected from the upper installation operating system.

2. The power system according to claim 1, characterized in that, It also includes a transmission mechanism; the transmission mechanism is arranged between the drive motor and the upper loading operation system, the first output end is connected to the transmission mechanism, and the transmission mechanism is connected to the first system, the second system, and the third system; In the first operating mode, the transmission mechanism transmits the power of the drive motor to at least one of the first system, the second system, and the third system.

3. The power system according to claim 2, wherein The transmission mechanism is provided with a first power take-off, a second power take-off and a third power take-off; Wherein, the first power take-off is connected to the first system, the second power take-off is connected to the second system, and the third power take-off is connected to the third system.

4. The power system according to claim 3, characterized in that, The first system is a pumping system, and the second system is an auxiliary drive system; The transmission mechanism has a first transmission mode; in the first transmission mode, the first power take-off and the second power take-off are respectively engaged with the power output shaft of the transmission mechanism to transmit the power of the drive motor to the pumping system and the auxiliary drive system for pumping operations.

5. The power system according to claim 3, characterized in that, The third system is a boom system; the transmission mechanism has a second transmission mode; in the second transmission mode, the third power take-off is engaged with the power output shaft of the transmission mechanism to transmit the power of the drive motor to the boom system to perform boom operations.

6. The power system according to claim 3, characterized in that, The second system is an auxiliary drive system; the transmission mechanism has a third transmission mode; in the third transmission mode, the second power take-off is driven to engage with the power output shaft of the transmission mechanism to transmit the power of the drive motor to the auxiliary drive system for material waiting operations.

7. The power system according to claim 2, characterized in that, The transmission mechanism is provided with a first power take-off and a second power take-off; the first power take-off is connected to the first system and the second system; the second power take-off is connected to the third system.

8. The power system according to claim 7, characterized in that, The first power take-off is connected to the first system, and the first system is connected to the second system.

9. The power system according to any one of claims 1-8, characterized in that, It also includes a power unit, which includes an all-in-one module. The drive motor is connected to the all-in-one module; the all-in-one module is used to control the operation of the drive motor.

10. The power system according to claim 9, characterized in that, The power unit further includes a high-voltage box, which is connected to the multi-in-one module; the high-voltage box is used to control the multi-in-one module to supply power to the drive motor.

11. The power system according to claim 10, characterized in that, The power unit further includes a battery, which is connected to the high-voltage box to provide electrical energy for the drive motor through the high-voltage box and the multi-in-one module.

12. The power system according to claim 10, wherein The power unit further includes a range extender, which is connected to the high-voltage box to provide electrical energy for the drive motor through the high-voltage box and the multi-in-one module.

13. An engineering machinery, characterized in that, The construction machinery is provided with the power system according to any one of claims 1-12.

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