Power system and engineering machinery

Abstract

The utility model provides a power system and engineering machinery. The power system and the engineering machinery comprise a first driving motor, a second driving motor, a gearbox, a loading system and a traveling system, the loading system comprises a first system, a second system and a third system; the first driving motor is connected with the gearbox; a power take-off port of the gearbox is connected with the first system and the second system so as to transmit power transmitted by the first driving motor to the first system and / or the second system; the gearbox is connected with the traveling system in a direct drive mode so as to transmit power transmitted by the first drive motor to the traveling system. And the second driving motor is connected with the third system to drive the third system. According to the power system and the engineering machinery, the transmission efficiency of the engineering machinery can be improved.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, and in particular to a power system and engineering machinery. Background Technology

[0002] With economic development and rapid advancements in industrial technology, the application scenarios for construction machinery are becoming increasingly widespread. Construction machinery is capable of movement and, upon reaching a designated location, begins its loading and unloading operations. Therefore, during the operation of construction machinery, movement and loading / unloading operations typically do not occur simultaneously.

[0003] In some technologies, the engine is connected to the transmission in the drive system of traditional construction machinery, and the transmission is then connected to a centrally located transfer case. The transfer case is used to switch between driving and superstructure operation. However, in this technology, energy loss occurs during the transmission of power from the engine through the transmission and the transfer case, resulting in low transmission efficiency in the construction machinery's drive system.

[0004] Therefore, in order to solve the problems mentioned above, there is an urgent need for a solution to improve the transmission efficiency of engineering machinery. Utility Model Content

[0005] This application provides a power system and engineering machinery to improve the transmission efficiency of engineering machinery.

[0006] On one hand, this application provides a power system, including:

[0007] The system comprises a first drive motor, a second drive motor, a gearbox, a superstructure system, and a driving system; the superstructure system includes a first system, a second system, and a third system.

[0008] The first drive motor is connected to the gearbox; the power take-off port of the gearbox is connected to the first system and the second system to transmit the power transmitted by the first drive motor to the first system and / or the second system; the gearbox is connected to the driving system via direct drive to transmit the power transmitted by the first drive motor to the driving system; the second drive motor is connected to the third system to drive the third system.

[0009] In one possible implementation, the power take-off port of the gearbox is connected to the first system, and the gearbox transmits the power transmitted by the first drive motor to the first system through the power take-off port;

[0010] The first system is connected to the second system, and the first system transmits the power from the gearbox to the second system.

[0011] In one possible implementation, the gearbox is provided with a first power take-off port and a second power take-off port;

[0012] The first power take-off port is connected to the first system, and the gearbox transmits the power from the first drive motor to the first system through the first power take-off port; the second power take-off port is connected to the second system, and the gearbox transmits the power from the first drive motor to the second system through the second power take-off port.

[0013] In one possible implementation, the first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system.

[0014] Alternatively, the first system can be an auxiliary drive system, the second system a pumping system, and the third system a boom system.

[0015] Alternatively, the first system may be a pumping system, the second system a boom system, and the third system an auxiliary drive system.

[0016] Alternatively, the first system may be a boom system, the second system a pumping system, and the third system an auxiliary drive system.

[0017] Alternatively, the first system may be a boom system, the second system an auxiliary drive system, and the third system a pumping system.

[0018] Alternatively, the first system can be an auxiliary drive system, the second system a boom system, and the third system a pumping system.

[0019] In one possible implementation, the power system further includes an all-in-one module, with the first drive motor and the second drive motor respectively connected to the all-in-one module, and the all-in-one module controlling the operation of the first drive motor and / or the second drive motor.

[0020] In one possible implementation, the power system further includes a high-voltage box; the high-voltage box is connected to the multi-function module, and the high-voltage box controls the multi-function module to supply power to the first drive motor and / or the second drive motor.

[0021] In one possible implementation, the power system further includes a battery; the battery is connected to a high-voltage box to provide electrical energy to the first drive motor and the second drive motor via the high-voltage box and the all-in-one module.

[0022] In one possible implementation, the high-voltage box is provided with an interface for connecting an external power source.

[0023] In one possible implementation, the power system further includes a range extender; the range extender is connected to a high-voltage box to provide electrical energy to the first drive motor and the second drive motor via the high-voltage box and the all-in-one module.

[0024] On the other hand, this application provides an engineering machine that is equipped with the power system provided in the first aspect above.

[0025] The power system and construction machinery provided in this application, by setting up two drive motors, wherein the first drive motor is connected to a gearbox, the gearbox is connected to the first and second systems of the superstructure system, the gearbox is also connected to the driving system, and the second drive motor is directly connected to the third system of the superstructure system, the power of the first drive motor is transmitted to the first and second systems connected to the gearbox for operation through the gearbox, or the power of the first drive motor is transmitted to the driving system connected to the gearbox for driving; the power of the second drive motor is transmitted to the third system connected to it for operation, so that the switching between driving and superstructure operation of the construction machinery can be realized without the need to set a central transfer case after the gearbox, thereby improving the transmission efficiency of the construction machinery. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 The structural schematic diagram of the power system provided in this application Figure 1 ;

[0028] Figure 2 The structural schematic diagram of the power system provided in this application Figure 2 ;

[0029] Figure 3 The structural schematic diagram of the power system provided in this application Figure 3 ;

[0030] Figure 4 The structural schematic diagram of the power system provided in this application Figure 4 ;

[0031] Figure 5 The structural schematic diagram of the power system provided in this application Figure 5 ;

[0032] Figure 6 The structural schematic diagram of the power system provided in this application Figure 6 ;

[0033] Figure 7 The structural schematic diagram of the power system provided in this application Figure 7 ;

[0034] Figure 8 The structural schematic diagram of the power system provided in this application Figure 8 ;

[0035] Figure 9 The structural schematic diagram of the power system provided in this application Figure 9 ;

[0036] Figure 10The structural schematic diagram of the power system provided in this application Figure 10 ;

[0037] Figure 11 The structural schematic diagram of the power system provided in this application Figure 10 one;

[0038] Figure 12 The structural schematic diagram of the power system provided in this application Figure 10 two;

[0039] Figure 13 The structural schematic diagram of the power system provided in this application Figure 10 three;

[0040] Figure 14 The structural schematic diagram of the power system provided in this application Figure 10 Four;

[0041] Figure 15 The structural schematic diagram of the power system provided in this application Figure 10 five;

[0042] Figure 16 The structural schematic diagram of the power system provided in this application Figure 10 six;

[0043] Figure 17 The structural schematic diagram of the power system provided in this application Figure 10 seven;

[0044] Figure 18 The structural schematic diagram of the power system provided in this application Figure 10 eight;

[0045] Figure 19 The structural schematic diagram of the power system provided in this application Figure 10 Nine.

[0046] Explanation of reference numerals in the attached figures:

[0047] 10: Powertrain; 101: First drive motor; 102: Second drive motor; 103: Gearbox; 1041: First system; 1042: Second system; 1043: Third system; 105: Driving system; 106: All-in-one module; 107: High voltage box; 108: Battery; 109: Range extender.

[0048] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0049] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0050] First, let me explain the terms used in this application:

[0051] Boom system: This refers to the system used in construction machinery to control the attitude and position of the boom. It can change the attitude and position of the boom. For example, construction machinery can be a concrete pump truck. Taking the actual application of a concrete pump truck as an example, the boom system can change the direction and position of the concrete being transported by the pump truck. When the pump truck needs to transport concrete to a high place or a distant location, the cylinders in the boom system push the boom to extend and raise it, so that the delivery pipe at the end of the boom reaches the designated location; while in transport or non-working state, the boom is controlled to fold, reducing the overall size of the vehicle for easier driving and parking.

[0052] Pumping system: This refers to a system used in construction machinery to transport materials. For example, the construction machinery may be a pump truck. Taking the practical application of a pump truck as an example, a pumping system is used to reliably transport concrete from the pump truck to a designated location.

[0053] Auxiliary drive system: This refers to an auxiliary drive system that assists in the operation of the superstructure. For example, a construction machine can be a concrete pump truck. Taking the actual application of a concrete pump truck as an example, the pumping system can transport concrete, and it can also be used to mix the concrete in the pump truck to ensure that the concrete and other materials remain uniformly mixed before or during pumping. It can also provide driving power for other auxiliary equipment of the pump truck.

[0054] Power take-off (PTO): Also known as a power take-off device, it is a device that is generally composed of one or more sets of transmission gears, clutches and controllers, used to output power to external working devices.

[0055] Construction machinery refers to mechanical equipment used in engineering operations. It can include pump trucks (or concrete pump trucks), wet spraying machines, fire trucks, and so on. Construction machinery is capable of both driving and performing superstructure operations. During driving, power is transmitted to the running system, then through the drive shaft to the drive axle, and finally distributed to the drive wheels, generating driving force on the ground to enable movement. During superstructure operations, power is transmitted to different gear pumps within the superstructure system. The movement of these gear pumps drives the superstructure system to perform the superstructure operations.

[0056] With economic development and rapid advancements in industrial technology, the practical applications of construction machinery are becoming increasingly widespread. Its driving system and superstructure system typically need to operate independently. Construction machinery uses its driving system to efficiently transport equipment to various designated locations; once the machinery arrives at its destination, the superstructure system independently performs superstructure operations.

[0057] In some embodiments, in the drive unit of conventional construction machinery, the engine and transmission are connected, and the transmission is then connected to a centrally located transfer case. The centrally located transfer case facilitates the switching of power between the superstructure system and the driving system.

[0058] In the above embodiments, power is transmitted from the engine and must pass through a transmission and a centrally located transfer case to reach the target superstructure or driving system. Energy loss occurs during power transmission, resulting in low transmission efficiency of the construction machinery's drive unit.

[0059] To address the potential problems in the above embodiments, this application provides a power system and construction machinery. By configuring two drive motors, the first drive motor is connected to a gearbox, which in turn connects to a first and second system within the superstructure system, and also to a driving system. The second drive motor is directly connected to a third system within the superstructure system. The gearbox transmits power from the first drive motor to the first and second systems of the superstructure system connected to the gearbox for superstructure operations, or transmits power from the first drive motor to the driving system connected to the gearbox for driving. By transmitting power from the second drive motor to the connected third system for superstructure operations, the switching between driving and superstructure operations of the construction machinery can be achieved without the need for a centrally located transfer case after the gearbox, thus improving the transmission efficiency of the construction machinery.

[0060] The technical solution of this application and how it solves the above-mentioned technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0061] Figure 1 The structural schematic diagram of the power system provided in this application Figure 1 ,like Figure 1 As shown, the power system 10 includes: a first drive motor 101, a second drive motor 102, a gearbox 103, and an upper structure system (…). Figure 1 (not shown in the image) and driving system 105.

[0062] System installation ( Figure 1 (Not shown in the image) includes a first system, a second system, and a third system.

[0063] The first drive motor 101 is connected to the gearbox 103, and the power take-off port of the gearbox 103 is connected to the first system and the second system to transmit the power transmitted by the first drive motor 101 to the first system and / or the second system.

[0064] The gearbox 103 is connected to the driving system 105 via direct drive to transmit the power from the first drive motor 101 to the driving system 105.

[0065] The second drive motor 102 is connected to the third system 1043 to drive the third system 1043.

[0066] For example, the transmission is provided with a power take-off port, which can also be called a power output port. The first system and the second system are connected to the transmission through the power take-off port on the transmission.

[0067] For example, the transmission and the driving system are connected via direct drive. Direct drive means that the output shaft of the transmission is directly (or through a minimal transmission component) rigidly connected to the drive shaft of the driving system.

[0068] For example, the gearbox is used to transmit the power transmitted by the first drive motor to the first system and the second system for operation, or the gearbox is used to transmit the power transmitted by the first drive motor to the driving system for driving. The second drive motor is used to drive the third system for operation.

[0069] For example, the first drive motor and the second drive motor may each include a drive motor output shaft. The first drive motor is connected to the gearbox via its output shaft, and the first drive motor can transmit power to the gearbox through its output shaft. The second drive motor is connected to a gear pump in the third system, and the second drive motor can transmit power to the third system through its output shaft. The gearbox can be connected to the first system, the second system, and the driving system respectively, and can transmit the power of the drive motor to the first system, the second system, or the driving system.

[0070] In one example, when the construction machinery is in operation, the power of the first drive motor is transmitted to the driving system through the gearbox, and the driving system operates to move the construction machinery. It is understood that the second drive motor is not operating at this time.

[0071] In another example, when the construction machinery is in superstructure operation mode, on the one hand, the power of the first drive motor is transmitted to the first and second systems through the gearbox, thereby enabling the first and second systems to operate and thus allowing the construction machinery to perform superstructure operations; on the other hand, the power of the second drive motor is transmitted to the third system, thereby enabling the construction machinery to perform superstructure operations. It can be understood that at this time, the first and second drive motors are operating, but the power of the first drive motor is not transmitted to the driving system through the gearbox.

[0072] Specifically, the gearbox includes a gear set, which contains multiple gears. The gearbox can change the meshing relationship between different gears in the gear set, so as to transmit the power transmitted by the first drive motor to the first system and the second system in the superstructure system for superstructure operation, or to transmit the power transmitted by the first drive motor to the driving system for driving.

[0073] For example, when the gear corresponding to the output shaft of the first drive motor in the gearbox meshes with the gear corresponding to the drive axle of the driving system, the gearbox transmits the power from the first drive motor to the driving system for propulsion. That is, the construction machinery is in a driving state at this time. When the gear corresponding to the output shaft of the first drive motor in the gearbox meshes with the gear corresponding to the drive shaft of the first system gear pump and / or the gear corresponding to the drive shaft of the second system gear pump, the gearbox transmits the power from the first drive motor to the first and second systems for loading and unloading operations.

[0074] In one possible implementation, the first, second, and third systems of the superstructure system are equipped with corresponding gear pumps, which enable the superstructure operations of each system. The gear pumps in the superstructure system can be used to drive the gear pumps of the pumping system to rotate in both directions via a drive motor. These gear pumps can also be referred to as fixed displacement pumps. In some embodiments, a variable displacement pump is used in the superstructure system, requiring a valve block to switch its direction. However, this application uses a gear pump, eliminating the need for a valve block and directly using a drive motor to drive the gearbox to switch between forward and reverse directions, thus saving space.

[0075] It should be noted that the first, second, and third systems in the superstructure system can each be responsible for performing different types of superstructure operations. By transmitting power from the drive motor to these systems, combined operations of different natures required under different working conditions can be achieved.

[0076] In construction machinery, taking a concrete pump truck as an example, the superstructure system can specifically include: a boom system, a pumping system, and an auxiliary drive system. The first system can be any one of the boom system, pumping system, and auxiliary drive system; the second system can be any one of the remaining two systems; and correspondingly, the last remaining system is the third system.

[0077] For example: the first system is the boom system, the second system is the pumping system, and the third system is the auxiliary drive system.

[0078] Alternatively, the first system can be a boom system, the second system an auxiliary drive system, and the third system a pumping system.

[0079] Alternatively, the first system may be a pumping system, the second system a boom system, and the third system an auxiliary drive system.

[0080] Alternatively, the first system may be a pumping system, the second system an auxiliary drive system, and the third system a boom system.

[0081] Alternatively, the first system can be an auxiliary drive system, the second system a boom system, and the third system a pumping system.

[0082] Alternatively, the first system can be an auxiliary drive system, the second system a pumping system, and the third system a boom system.

[0083] The power system provided in this application embodiment includes a first drive motor connected to a gearbox, which in turn connects to a first system and a second system within the superstructure system, as well as a driving system. A second drive motor connects to a third system within the aforementioned superstructure system. When the construction machinery is in driving mode, the gearbox transmits power from the first drive motor to the driving system. When the construction machinery is in superstructure operation mode, the gearbox transmits power from the first drive motor to the first and second systems within the superstructure system, but not to the driving system. The second drive motor then drives the third system to perform superstructure operations. On one hand, this shortens the power transmission path of the power system, eliminating the need for a centrally located transfer case after the gearbox. The power switching and decoupling between the superstructure system and the driving system can be achieved directly through the gearbox. This reduces energy loss during transmission and improves the transmission efficiency of the construction machinery's power system. On the other hand, the absence of a centrally located transfer case in the power system saves on design and manufacturing costs and conserves space.

[0084] As can be seen from the foregoing embodiments, the gearbox is connected to the first system and the second system of the driving system and the superstructure system, respectively. This embodiment, in the foregoing... Figure 1 Based on the illustrated embodiment, this paper further explains how the transmission connects to the two systems in the driving system and the superstructure system.

[0085] Figure 2 The structural schematic diagram of the power system provided in this application Figure 2 In one example, such as Figure 2 As shown, in Figure 1 Based on the embodiment shown, the power take-off port of the gearbox 103 is connected to the first system 1041, and the power take-off port of the gearbox 103 transmits the power transmitted by the first drive motor 101 to the first system 1041.

[0086] The first system 1041 is connected to the second system 1042, and the first system 1041 transmits the power transmitted by the gearbox 103 to the second system 1042.

[0087] For example, the gearbox is used to transmit the power transmitted by the first drive motor to the first system through the power take-off port; the first system is used to transmit the power transmitted by the gearbox to the second system.

[0088] For example, a power take-off (PTO) is provided on the gearbox, and the PTO is connected to the first system; further, the first system is connected to the second system.

[0089] When the construction machinery is in operation, the power of the first drive motor is transmitted to the driving system through the gearbox, and the driving system operates to enable the construction machinery to move. The gearbox includes a transmission control unit (TCU). When the TCU receives a driving command from the vehicle control unit (VCU), the TCU controls the gearbox to transmit the power of the first drive motor to the driving system through the gearbox output shaft.

[0090] Furthermore, taking a concrete pump truck as an example, the first, second, and third systems can be any combination of the boom system, pumping system, and auxiliary drive system. This enables the construction machinery to operate in different conditions under its superstructure, such as boom operation, pumping operation, and mixed operation.

[0091] In one example, Figure 3 The structural schematic diagram of the power system provided in this application Figure 3 ,like Figure 3 As shown, the first system is the boom system, the second system is the pumping system, and the third system is the auxiliary drive system.

[0092] When the construction machinery is in mixed operation conditions, the first drive motor operates, and the gearbox transmits the power of the first drive motor to the boom system, which then transmits the power to the pumping system, enabling both the boom system and the pumping system to operate. The second drive motor then operates, driving the auxiliary drive system.

[0093] When the construction machinery is in a waiting-for-materials operation, the first drive motor does not work, the second drive motor works, and the second drive motor drives the auxiliary drive system to operate.

[0094] In one example, Figure 4 The structural schematic diagram of the power system provided in this application Figure 4 ,like Figure 4 As shown, the first system is the pumping system, the second system is the boom system, and the third system is the auxiliary drive system.

[0095] This example is similar to the one described above. Figure 3 The difference in the example shown is that when the gearbox transmits the power of the first drive motor to the pumping system and the boom system through the power take-off port, it transmits the power of the first drive motor to the pumping system through the power take-off port, and then the pumping system transmits the power to the boom system.

[0096] In one example, Figure 5 The structural schematic diagram of the power system provided in this application Figure 5 ,like Figure 5 As shown, the first system is the auxiliary drive system, the second system is the boom system, and the third system is the pumping system.

[0097] When the construction machinery is in mixed operation conditions, the first drive motor operates, and the gearbox transmits the power of the first drive motor to the auxiliary drive system, which then transmits the power to the boom system, enabling both the boom system and the auxiliary drive system to operate. The second drive motor then operates, driving the pumping system.

[0098] In one example, Figure 6 The structural schematic diagram of the power system provided in this application Figure 6 ,like Figure 6 As shown, the first system is the boom system, the second system is the auxiliary drive system, and the third system is the pumping system.

[0099] This example is similar to the one described above. Figure 5 The difference in the example shown is that when the gearbox transmits the power of the first drive motor to the boom system and the auxiliary drive system through the power take-off port, it transmits the power of the first drive motor to the boom system through the power take-off port, and then the boom system transmits the power to the auxiliary drive system.

[0100] In one example, Figure 7 The structural schematic diagram of the power system provided in this application Figure 7 ,like Figure 7 As shown, the first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system.

[0101] When the construction machinery is in boom operation mode, the first drive motor does not work, the second drive motor works, and the second drive motor drives the boom system to work.

[0102] When the construction machinery is in pumping operation mode, the second drive motor does not work, the first drive motor works, the gearbox transmits the power of the first drive motor to the pumping system, and then the pumping system transmits the power to the auxiliary drive system so that the pumping system and the auxiliary drive system can work.

[0103] When the construction machinery is in mixed operation conditions, the first drive motor operates, and the gearbox transmits the power of the first drive motor to the pumping system, which then transmits the power to the auxiliary drive system, enabling both the pumping system and the auxiliary drive system to operate. The second drive motor then operates, driving the boom system to perform its tasks.

[0104] In one example, Figure 8 The structural schematic diagram of the power system provided in this application Figure 8 ,like Figure 8 As shown, the first system is the auxiliary drive system, the second system is the pumping system, and the third system is the boom system.

[0105] This example is similar to the one described above. Figure 7 The difference in the example shown is that when the gearbox transmits the power of the first drive motor to the pumping system and the auxiliary drive system through the power take-off port, it transmits the power of the first drive motor to the auxiliary drive system through the power take-off port, and then the auxiliary drive system transmits the power to the pumping system.

[0106] In the above embodiments, a power take-off port is provided on the gearbox, which is connected to the first system in the superstructure system. The first system is then connected to the second system in the superstructure system; the second drive motor is connected to the third system in the superstructure system. This achieves power decoupling and power switching between the superstructure system and the driving system. Furthermore, different drive motors can be used to differentiate the working conditions of the superstructure. This meets the diverse working condition design requirements of construction machinery and improves the power transmission efficiency of the power system.

[0107] The transmission can transmit power to the first and second systems via a power take-off port. As can be seen from the foregoing embodiments, the transmission can also transmit power to the driving system.

[0108] Furthermore, Figure 9 The structural schematic diagram of the power system provided in this application Figure 9 ,like Figure 9 As shown, in one example, the gearbox 103 is provided with a first power take-off port and a second power take-off port; the first power take-off port is connected to the first system 1041, and the gearbox 103 transmits the power transmitted by the first drive motor 101 to the first system 1041 through the first power take-off port.

[0109] The second power take-off port is connected to the second system 1042, and the gearbox 103 transmits the power transmitted by the first drive motor 101 to the second system 1042 through the second power take-off port.

[0110] For example, the gearbox is used to transmit the power transmitted by the first drive motor to the first system through the first power take-off port, and / or to transmit the power transmitted by the first drive motor to the second system through the second power take-off port.

[0111] For example, the transmission is provided with two power take-off ports (PTOs), with the first PTO on the transmission connected to the first system and the second PTO on the transmission connected to the second system.

[0112] In construction machinery, taking a pump truck (concrete pump truck) as an example, the first system can be any one of the above-mentioned boom system, pumping system and auxiliary drive system, the second system can be any one of the remaining two systems, and correspondingly, the last remaining system is the third system.

[0113] When the construction machinery is in operation, the first drive motor is active, while the second drive motor is inactive. The gearbox transmits power from the first drive motor to the driving system, enabling the system to move.

[0114] In one example, Figure 10 The structural schematic diagram of the power system provided in this application Figure 10 ,like Figure 10 As shown, the first system is the boom system, the second system is the pumping system, and the third system is the auxiliary drive system.

[0115] When the construction machinery is in boom operation mode, the second drive motor is not working, the first drive motor is working, and the gearbox transmits the power of the first drive motor to the boom system through the first power take-off port.

[0116] When the construction machinery is in pumping operation mode, the second drive motor works to drive the auxiliary drive system; when the first drive motor works, the gearbox transmits the power of the first drive motor to the pumping system through the second power take-off port.

[0117] When the construction machinery is in mixed operation conditions, the first drive motor operates, and the gearbox transmits the power of the first drive motor to the boom system through the first power take-off port, and also to the pumping system through the second power take-off port, so that the boom system and the pumping system can operate. The second drive motor operates, and the second drive motor drives the auxiliary drive system to operate.

[0118] When the construction machinery is in a waiting-for-materials operation, the first drive motor does not work, the second drive motor works, and the second drive motor drives the auxiliary drive system to operate.

[0119] In one example, Figure 11 The structural schematic diagram of the power system provided in this application Figure 10 First, such as Figure 11 As shown, the first system is the pumping system, the second system is the boom system, and the third system is the auxiliary drive system.

[0120] This example is similar to the one described above. Figure 10 The difference in the example shown is that when the gearbox transmits the power of the first drive motor to the pumping system and the boom system through the power take-off port, it transmits the power to the pumping system through the first power take-off port and to the boom system through the second power take-off port.

[0121] In one example, Figure 12 The structural schematic diagram of the power system provided in this application Figure 10 Second, such as Figure 12 As shown, the first system is the auxiliary drive system, the second system is the boom system, and the third system is the pumping system.

[0122] When the construction machinery is in boom operation mode, the second drive motor is not working, the first drive motor is working, and the gearbox transmits the power of the first drive motor to the boom system through the second power take-off port.

[0123] When the construction machinery is in pumping operation mode, the second drive motor works to drive the pumping system; when the first drive motor works, the gearbox transmits the power of the first drive motor to the auxiliary drive system through the first power take-off port.

[0124] When the construction machinery is in mixed operation conditions, the first drive motor operates, and the gearbox transmits the power of the first drive motor to the auxiliary drive system through the first power take-off port, and also to the boom system through the second power take-off port, so that the boom system and the auxiliary drive system can operate. The second drive motor operates, and the second drive motor drives the pumping system to operate.

[0125] When the construction machinery is in a waiting-for-materials operation, the second drive motor is not working, the first drive motor is working, and the gearbox transmits the power of the first drive motor to the auxiliary drive system through the first power take-off port.

[0126] In one example, Figure 13 The structural schematic diagram of the power system provided in this application Figure 10 Third, such as Figure 13 As shown, the first system is the boom system, the second system is the auxiliary drive system, and the third system is the pumping system.

[0127] This example is similar to the one described above. Figure 12The difference in the example shown is that when the gearbox transmits the power of the first drive motor to the boom system and the auxiliary drive system through the power take-off port, it transmits the power of the first drive motor to the boom system through the first power take-off port and transmits the power to the auxiliary drive system through the second power take-off port.

[0128] In one example, Figure 14 The structural schematic diagram of the power system provided in this application Figure 10 Fourth, such as Figure 14 As shown, the first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system.

[0129] When the construction machinery is in boom operation mode, the first drive motor does not work, the second drive motor works, and the second drive motor drives the boom system to work.

[0130] When the construction machinery is in pumping operation mode, the second drive motor is not working, the first drive motor is working, and the gearbox transmits the power of the first drive motor to the pumping system through the first power take-off port, and to the auxiliary drive system through the second power take-off port, so that the pumping system and the auxiliary drive system can work.

[0131] When the construction machinery is in a mixed operation condition, the first drive motor operates, and the gearbox transmits the power of the first drive motor to the pumping system through the first power take-off port, and to the auxiliary drive system through the second power take-off port, so that the pumping system and the auxiliary drive system can operate. The second drive motor operates, and the second drive motor drives the boom system to operate.

[0132] When the construction machinery is in a waiting-for-materials operation, the second drive motor is not working, the first drive motor is working, and the gearbox transmits the power of the first drive motor to the auxiliary drive system through the second power take-off port.

[0133] In one example, Figure 15 The structural schematic diagram of the power system provided in this application Figure 10 Fifth, such as Figure 15 As shown, the first system is the auxiliary drive system, the second system is the pumping system, and the third system is the boom system.

[0134] This example is similar to the one described above. Figure 14 The difference in the example shown is that when the gearbox transmits the power of the first drive motor to the pumping system and the auxiliary drive system through the power take-off port, it transmits the power of the first drive motor to the auxiliary drive system through the first power take-off port and transmits the power to the pumping system through the second power take-off port.

[0135] In the above embodiments, by setting two power take-off ports on the gearbox, which are respectively connected to the first system and the second system, the power decoupling between the first system and the second system can be further achieved. Based on the aforementioned embodiments, the two power take-off ports on the gearbox enable power decoupling between the first system and the second system of the superstructure system in the construction machinery, achieving power transmission under various superstructure operating conditions and improving the transmission efficiency of the power system. Furthermore, under diverse power transmission processes, a centrally located transfer case is unnecessary; the gearbox alone can achieve diverse power transmission processes. Simultaneously, due to the shortened power transmission path, energy loss is reduced, further improving the transmission efficiency of the construction machinery.

[0136] As can be seen from the foregoing embodiments, both the first drive motor and the second drive motor require electrical energy. This embodiment, in the foregoing... Figure 1 Based on the illustrated embodiment, the structure of the power system will be further explained.

[0137] Figure 16 The structural schematic diagram of the power system provided in this application Figure 10 6. In one example, such as Figure 16 As shown, in Figure 1 Based on the embodiment shown, the power system 10 further includes an all-in-one module 106. The first drive motor 101 and the second drive motor 102 are respectively connected to the all-in-one module 106.

[0138] The multi-function module 106 controls the operation of the first drive motor 101 and / or the second drive motor 102.

[0139] For example, the multi-function module is electrically connected to the first drive motor and the second drive motor via wires or a bus. Optionally, the first drive motor and the second drive motor can be electrically connected to the multi-function module via three-phase wires, and the multi-function module transmits three-phase power to the first drive motor and / or the second drive motor via the three-phase wires to enable the first drive motor and / or the second drive motor to operate.

[0140] Specifically, the all-in-one module can receive instructions from the vehicle control unit (VCU) or the superstructure controller. In response to these instructions, the all-in-one module can generate a voltage signal and send it to the drive motor connected to the all-in-one module to activate the drive motor. The instructions can indicate the operating status of the drive motor.

[0141] The operating states of the drive motor include, but are not limited to: drive motor start and stop, drive motor speed, drive motor torque, drive motor power, and drive motor forward and reverse rotation.

[0142] Based on the foregoing example, the all-in-one module can receive driving commands or superstructure commands, including boom operation commands, pumping operation commands, mixed operation commands, and material waiting operation commands. When the all-in-one module receives a driving command or superstructure command, it controls the operating state of the first drive motor and / or the second drive motor, and the gearbox selects the power transmission path of the first drive motor.

[0143] For example, when the construction machinery is in motion, the all-in-one module responds to the driving command from the vehicle controller (VCU) and controls the drive motor to operate. The driving command specifies the torque of the drive motor. Therefore, the all-in-one module generates a voltage signal based on the driving command and sends it to the drive motor, causing the drive motor to operate at the torque indicated by the driving command.

[0144] For example, when the construction machinery is in the superstructure working condition, the all-in-one module responds to the superstructure controller's superstructure command and controls the drive motor to operate. The superstructure command indicates the drive motor's rotational speed. Therefore, the all-in-one module generates a voltage signal based on the superstructure command and sends it to the drive motor, causing the drive motor to operate at the rotational speed indicated by the superstructure command.

[0145] It should be noted that the drive motor mentioned may refer to the first drive motor in the foregoing embodiments, and / or the second drive motor.

[0146] In the above example, the operation of the first drive motor and / or the second drive motor can be controlled by the all-in-one module so that the first drive motor and / or the second drive motor can work according to the actual required working conditions, thereby enabling each system in the overall power system to work.

[0147] Figure 17 The structural schematic diagram of the power system provided in this application Figure 10 7. In one example, such as Figure 17 As shown, in Figure 16 Based on the embodiment shown, the power system 10 also includes a high-pressure box 107.

[0148] The high-voltage box 107 is connected to the multi-function module 106. The high-voltage box 107 controls the multi-function module 106 to supply power to the first drive motor 101 and / or the second drive motor 102.

[0149] For example, the high-voltage box can be a high-voltage power distribution unit (PDU), which is used to distribute high-voltage electrical energy to different electrical devices. In this example, the high-voltage box is used to control the multi-function module to supply power to the first drive motor and / or the second drive motor, so that the first drive motor and / or the second drive motor can operate.

[0150] For example, the high-voltage box is connected to at least one power source, and multiple relay switches are installed inside the high-voltage box, with each relay switch corresponding to a power source. The high-voltage box controls whether the power source supplies power to the first drive motor and / or the second drive motor through the multi-function module by changing the on / off state of the relay switches.

[0151] It is understood that the first power source is connected to the multi-function module through the first relay switch in the high-voltage box. When the first relay switch is in the on state, the first power source can supply power to the first drive motor and / or the second drive motor through the multi-function module; correspondingly, when the first relay switch is in the off state, the first power source cannot supply power to the first drive motor and / or the second drive motor through the multi-function module.

[0152] Optionally, other power sources can also be provided. Based on the on / off state of multiple relay switches, one or more power sources can be controlled to supply power to the first drive motor and / or the second drive motor through the multi-in-one module.

[0153] Optionally, the high-voltage box is equipped with a fuse to stop supplying power to the abnormal power source in case of an abnormal power supply. Specifically, abnormal power supply situations may include: temperature exceeding a preset temperature or current exceeding the maximum current.

[0154] It should be noted that, in the embodiments of this application, "high voltage" in the high-voltage box refers to the voltage value of the power supply source. Specifically, in the embodiments of this application, "high voltage" in the high-voltage box refers to a power supply source with a voltage value in the range of 400V to 750V. It can be understood that a device that controls the power supply status of a power supply source with a voltage value in the range of 400V to 750V can be called a high-voltage box.

[0155] In the above example, by setting up a high-voltage box, the power supply status of the drive motor can be controlled. The power supply status indicates whether at least one power source connected to the high-voltage box is supplying power to the drive motor through the multi-function module. Controlling the multi-function module to supply power to the drive motor based on the high-voltage box enables the drive motor to operate based on the received electrical energy. Furthermore, the safety of the drive motor's power supply side can be improved by utilizing the fuses in the high-voltage box.

[0156] Figure 18 The structural schematic diagram of the power system provided in this application Figure 10 8. In one example, such as Figure 18 As shown, in Figure 17 Based on the embodiment shown, the power system 10 also includes a battery 108.

[0157] The battery 108 is connected to the high-voltage box 107. The battery 108 provides power to the first drive motor 101 and the second drive motor 102 through the high-voltage box 107 and the multi-function module 106.

[0158] For example, the battery is used to store electrical energy and provide electrical energy. A high-voltage box allows control over whether the battery's electrical energy is transmitted to the first drive motor and / or the second drive motor via the all-in-one module.

[0159] In the example above, by setting up a battery to store electrical energy, the power required to drive the motor can be provided.

[0160] In one example, the high-voltage box is equipped with an interface for connecting an external power source. The external power source is connected to the high-voltage box through this interface.

[0161] For example, the high-voltage box is used to output electrical energy from an external power source to the multi-function module. By controlling the on / off state of the relay switch in the high-voltage box corresponding to the external power source, the system controls whether the external power source can supply power to the first drive motor and / or the second drive motor through the multi-function module.

[0162] Optionally, the external power source includes: a portable external power source, and / or, mains power.

[0163] Optionally, an external power source can also charge the battery.

[0164] In the above example, by providing an interface on the high-voltage box, an external power source can be connected to the high-voltage box in the power system. This external power source can charge the battery and directly supply power to the first and second drive motors. This increases the richness of the power system's power input side, and because of the introduction of the external power source, when the battery power cannot meet the drive motor's drive power, the external power source can directly supply power to the drive motor, improving the drive motor's operational stability and thus enhancing the overall reliability of the power system.

[0165] Figure 19 The structural schematic diagram of the power system provided in this application Figure 10 9. In one example, such as Figure 19 As shown, in Figure 18 Based on the embodiment shown, the power system 10 also includes a range extender 109.

[0166] The range extender 109 is connected to the high-voltage box 107. The range extender 109 supplies power to the first drive motor 101 and the second drive motor 102 through the high-voltage box 107 and the multi-function module 106.

[0167] For example, the range extender supplies power to the first and second drive motors via a high-voltage box and an all-in-one module. The high-voltage box controls whether the range extender's power is transmitted to the drive motors via the all-in-one module. When the power of the first or second drive motor is insufficient, the high-voltage box controls an internal relay switch connected to the range extender to conduct, allowing the range extender to supply power to the drive motors via the all-in-one module, thus ensuring the output power of the first or second drive motor.

[0168] Optionally, the range extender can also be connected to the battery to increase its range.

[0169] Optionally, the range extender may include an engine, a generator set, and a range extender controller. The range extender controller is connected to the engine, and the engine is connected to the generator set. In response to a range extender command, the range extender controller controls the engine to drive the generator set to generate electricity, and transmits the electrical energy generated by the generator set to a first drive motor or a second drive motor via a high-voltage box and an all-in-one module; or it transmits the electrical energy generated by the generator set to the battery via a high-voltage box.

[0170] The range extension command can be issued by the vehicle control unit (VCU) or the superstructure controller. When the construction machinery is in driving condition, the VCU is used to detect the drive power of the first drive motor and the power supply of the battery. If it is determined that the drive power of the first drive motor is greater than the power supply of the battery, the VCU sends a range extension command to the range extender controller.

[0171] Alternatively, when the construction machinery is in the superstructure working condition, the superstructure controller is used to detect the driving power of the first drive motor and the driving power of the second drive motor. The superstructure controller is also used to detect the power supply of the battery. If it is determined that the sum of the driving power of the first drive motor and the driving power of the second drive motor is greater than the power supply of the battery, the superstructure controller sends a range extension command to the range extender controller.

[0172] Optionally, the range extender command is used to indicate the target engine speed. By controlling the engine speed to the target speed in the range extender command through the range extender controller, the generator set can be kept operating in the high-efficiency power generation zone. The high-efficiency power generation zone refers to the generator set operating with a mechanical energy-to-electrical energy conversion efficiency greater than 75%.

[0173] It should be noted that, Figure 19 Is Figure 18 The illustrated embodiment includes an added range extender. It can be understood that... Figure 17 Based on the illustrated embodiment, a range extender is added separately. The range extender is directly connected to the high-voltage box.

[0174] Combining the two examples above, the high-voltage box is connected to both the battery and the range extender. The high-voltage box can control whether the battery supplies power to the drive motor through the multi-function module; it can also control whether the range extender supplies power to the drive motor through the multi-function module. It can be understood that the power sources mentioned in the aforementioned examples are the battery and / or the range extender.

[0175] In the above embodiments, the power system may further include an all-in-one module to control the operation of different drive motors; a high-voltage box, battery, and range extender are provided to supply power to the drive motors through the all-in-one module. Furthermore, when the drive power of the first drive motor and the second drive motor are insufficient, the range extender's generator set can be activated to supply power to the drive motors, supplementing their input power. This enables the power system to supply electricity to both the first and second drive motors, and the range extender can supplement the input power of the drive motors, improving their power performance while optimizing battery energy utilization.

[0176] The power system provided in this application embodiment uses two drive motors. The first drive motor is connected to a gearbox, and one or more power take-off ports are provided on the gearbox. The first and second systems of the superstructure system are connected to the gearbox, and the third system of the superstructure system is connected to the second drive motor. The gearbox transmits power from the first drive motor to the first and second systems connected to the gearbox for superstructure operations, or transmits power from the first drive motor to the driving system connected to the gearbox for driving. The second drive motor transmits power to the third system connected to it for superstructure operations. There is no need for a centrally located transfer case after the gearbox; switching between driving and superstructure operations can be achieved solely through the gearbox and the two drive motors. This shortens the power transmission path of the first drive motor and improves its transmission efficiency. The second drive motor is directly connected to the superstructure system, further shortening its power transmission path and improving its transmission efficiency. In summary, this improves the overall transmission efficiency of the power system, thereby improving the transmission efficiency of the construction machinery.

[0177] This application also provides a construction machinery that is equipped with a power system as provided in any of the foregoing embodiments.

[0178] For example, construction machinery can be mechanical equipment that has both driving and superstructure working conditions in engineering projects.

[0179] For example, construction machinery can include pump trucks (or concrete pump trucks), wet spraying machines, fire trucks, and so on. Among them, concrete pump trucks, also known as pump trucks, refer to specialized construction machinery equipment that integrates multiple functions such as driving, pumping, boom operation, and auxiliary drive, used to efficiently and accurately transport ready-mixed concrete from the mixing plant or transport vehicles to the construction site or designated location.

[0180] The construction machinery exemplified above can all have both driving and superstructure operation modes. It should be understood that the construction machinery provided in this embodiment is equipped with a power system as described in the preceding embodiments. This power system enables power decoupling between driving and superstructure operation. This embodiment does not limit the specific model or type of construction machinery.

[0181] In the above embodiments, the construction machinery is based on the power system provided in the foregoing embodiments, which enables power decoupling between driving and superstructure operation. The specific implementation process and corresponding technical effects of the power system can be found in the explanation of the foregoing embodiments, and will not be elaborated here.

[0182] This application also provides a control method for a power system, which is applied to a controller in engineering machinery. The method includes:

[0183] Send a first control command to the first drive motor of the construction machinery so that the gearbox can transmit the power from the first drive motor to the connected system for superstructure operation or driving.

[0184] Send a second control command to the second drive motor of the construction machinery so that the second drive motor drives the connected system to perform operations;

[0185] The first drive motor and the second drive motor are respectively the first drive motor and the second drive motor in the power system provided in the aforementioned embodiments.

[0186] For example, the engineering machinery provided in the foregoing embodiments may further include a controller. The controller sends a first control command to the first drive motor and a second control command to the second drive motor.

[0187] In one example, when the construction machinery is currently in the superstructure operation state, the controller executes:

[0188] A first control command is sent to the first drive motor, indicating that the current construction machinery is in the upper structure operation condition, the first drive motor starts to work, and the gearbox transmits the power of the first drive motor to the first system and the second system;

[0189] And / or, send a second control command to the second drive motor, the control command indicating that the current construction machinery is in the upper structure operation condition, the second drive motor starts to work, and drives the third system connected to the second drive motor to work.

[0190] In one example, when the construction machinery is currently in a driving condition, the controller executes the following: sending a first control command to the first drive motor, which indicates that the construction machinery is currently in a driving condition, the first drive motor starts to work, and the gearbox transmits the power of the first drive motor to the driving system.

[0191] Optionally, the controller can also send control commands to the all-in-one module, which, in response to the control commands, controls the first drive motor and / or the second drive motor to start.

[0192] Optionally, the transmission may contain a transmission controller, which may also send a first control command to the transmission controller to enable the transmission to transmit power to the superstructure system or the driving system.

[0193] The power system control method provided in the above embodiments is applied to the controller in the engineering machinery provided in the foregoing embodiments to control the first drive motor, the second drive motor, and the gearbox of the power system provided in the foregoing embodiments. Its specific implementation process and technical effects are similar to those in the foregoing embodiments, and will not be elaborated here.

[0194] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0195] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A power system, characterized in that, include: The system comprises a first drive motor, a second drive motor, a gearbox, a superstructure system, and a driving system; the superstructure system includes a first system, a second system, and a third system. The first drive motor is connected to the gearbox; the power take-off port of the gearbox is connected to the first system and the second system to transmit the power transmitted by the first drive motor to the first system and / or the second system; The gearbox is connected to the driving system via a direct drive to transmit the power from the first drive motor to the driving system. The second drive motor is connected to the third system to drive the third system.

2. The power system according to claim 1, characterized in that, The power take-off port of the gearbox is connected to the first system, and the gearbox transmits the power transmitted by the first drive motor to the first system through the power take-off port; The first system is connected to the second system, and the first system transmits the power from the gearbox to the second system.

3. The power system according to claim 1, characterized in that, The gearbox is provided with a first power take-off port and a second power take-off port; The first power take-off port is connected to the first system, and the gearbox transmits the power from the first drive motor to the first system through the first power take-off port; the second power take-off port is connected to the second system, and the gearbox transmits the power from the first drive motor to the second system through the second power take-off port.

4. The power system according to any one of claims 1-3, characterized in that, The first system is a pumping system, the second system is an auxiliary drive system, and the third system is a boom system; Alternatively, the first system may be an auxiliary drive system, the second system a pumping system, and the third system a boom system; Alternatively, the first system may be a pumping system, the second system a boom system, and the third system an auxiliary drive system; Alternatively, the first system may be a boom system, the second system a pumping system, and the third system an auxiliary drive system; Alternatively, the first system may be a boom system, the second system may be an auxiliary drive system, and the third system may be a pumping system; Alternatively, the first system may be an auxiliary drive system, the second system a boom system, and the third system a pumping system.

5. The power system according to any one of claims 1-3, characterized in that, The power system also includes an all-in-one module, with the first drive motor and the second drive motor respectively connected to the all-in-one module, and the all-in-one module controlling the operation of the first drive motor and / or the second drive motor.

6. The power system according to claim 5, characterized in that, The power system also includes a high-voltage box; the high-voltage box is connected to the multi-function module, and the high-voltage box controls the multi-function module to supply power to the first drive motor and / or the second drive motor.

7. The power system according to claim 6, characterized in that, The power system also includes a battery; the battery is connected to the high-voltage box to provide electrical energy to the first drive motor and the second drive motor through the high-voltage box and the multi-function module.

8. The power system according to claim 7, characterized in that, The high-voltage box is equipped with an interface for connecting to an external power source.

9. The power system according to claim 6, characterized in that, The power system also includes a range extender; the range extender is connected to the high-voltage box to provide electrical energy to the first drive motor and the second drive motor through the high-voltage box and the multi-function module.

10. An engineering machinery, characterized in that, The engineering machinery is equipped with a power system as described in any one of claims 1-9.

Images