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, at least one 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 gearbox transmits power transmitted by the first driving motor to the first system; the gearbox is connected with the traveling system in a direct drive mode and transmits power transmitted by the first drive motor to the traveling system. And at least one second driving motor is connected with the second system and the third system so as to drive the second system and the third system. According to the power system and the engineering machine, a transfer case does not need to be arranged, power switching of driving and loading operation of the engineering machine is achieved, and the transmission efficiency of the engineering machine is 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 the rapid development of new energy technologies, various engineering equipment is also incorporating these technologies. Drive motors are being used in construction machinery for driving and superstructure operations.

[0003] Considering the working mode of construction machinery, driving and superstructure operation are usually not carried out simultaneously. Therefore, in some technologies, a transfer case is connected after the gearbox to transmit power to the drive motor. The transfer case switches the power between driving and superstructure operation. In the above technology, the power still needs to pass through the transfer case after the gearbox, resulting in low power transmission efficiency for the construction machinery.

[0004] Therefore, 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 the engineering machinery.

[0006] On one hand, this application provides a power system, including: a first drive motor, at least one 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;

[0007] The first drive motor is connected to the gearbox, and the power take-off port of the gearbox is connected to the first system. The gearbox transmits the power from the first drive motor to the first system. The gearbox is connected to the driving system via direct drive and transmits the power from the first drive motor to the driving system. At least one second drive motor is connected to the second system and the third system to drive the second system and the third system.

[0008] In one possible implementation, there is one second drive motor; the second drive motor is connected to the second system to drive the second system; the second system is connected to the third system, and the second system transmits the power transmitted by the second drive motor to the third system.

[0009] In one possible implementation, there are two second drive motors; one second drive motor is connected to the second system to drive the second system; and the other second drive motor is connected to the third system to drive the third system.

[0010] 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.

[0011] Alternatively, the first system can be an auxiliary drive system, the second system a pumping system, and the third system a boom system.

[0012] Alternatively, the first system may be a pumping system, the second system a boom system, and the third system an auxiliary drive system.

[0013] Alternatively, the first system may be a boom system, the second system a pumping system, and the third system an auxiliary drive system.

[0014] Alternatively, the first system is the boom system, the second system is the auxiliary drive system, and the third system is the pumping system;

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

[0016] In one possible implementation, the power system further includes an all-in-one module, with a first drive motor and at least one 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.

[0017] 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.

[0018] 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.

[0019] In one possible implementation, the high-voltage box is provided with an interface for connecting an external power source.

[0020] 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.

[0021] On the other hand, this application provides an engineering machine that is equipped with the power system provided in the first aspect above.

[0022] The power system and construction machinery provided in this application, by setting up multiple drive motors, including a first drive motor and at least one second drive motor, connect the first drive motor to a gearbox, which in turn connects to a driving system and a first system within the superstructure system; the at least one second drive motor connects to a second and third system within the superstructure system. The gearbox transmits power from the first drive motor to the connected first system or driving system, and the second drive motor then transmits power to the connected second and third systems. This enables power switching between driving and superstructure operation of the construction machinery without the need for a transfer case, thereby improving the transmission efficiency of the construction machinery. Attached Figure Description

[0023] 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.

[0024] Figure 1 The structural schematic diagram of the power system provided in this application Figure 1 ;

[0025] Figure 2 The structural schematic diagram of the power system provided in this application Figure 2 ;

[0026] Figure 3 The structural schematic diagram of the power system provided in this application Figure 3 ;

[0027] Figure 4 The structural schematic diagram of the power system provided in this application Figure 4 ;

[0028] Figure 5 The structural schematic diagram of the power system provided in this application Figure 5 ;

[0029] Figure 6 The structural schematic diagram of the power system provided in this application Figure 6 ;

[0030] Figure 7 The structural schematic diagram of the power system provided in this application Figure 7 ;

[0031] Figure 8 The structural schematic diagram of the power system provided in this application Figure 8 ;

[0032] Figure 9 The structural schematic diagram of the power system provided in this application Figure 9 ;

[0033] Figure 10The structural schematic diagram of the power system provided in this application Figure 10 ;

[0034] Figure 11 The structural schematic diagram of the power system provided in this application Figure 10 one;

[0035] Figure 12 The structural schematic diagram of the power system provided in this application Figure 10 two;

[0036] Figure 13 The structural schematic diagram of the power system provided in this application Figure 10 three;

[0037] Figure 14 The structural schematic diagram of the power system provided in this application Figure 10 Four;

[0038] Figure 15 The structural schematic diagram of the power system provided in this application Figure 10 five;

[0039] Figure 16 The structural schematic diagram of the power system provided in this application Figure 10 six;

[0040] Figure 17 The structural schematic diagram of the power system provided in this application Figure 10 seven;

[0041] Figure 18 The structural schematic diagram of the power system provided in this application Figure 10 eight;

[0042] Figure 19 The structural schematic diagram of the power system provided in this application Figure 10 Nine.

[0043] Explanation of reference numerals in the attached figures:

[0044] 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.

[0045] 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 concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0046] 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.

[0047] First, let me explain the terms used in this application:

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] Traditional construction machinery typically uses internal combustion engines as its power source. With the rapid development of new energy technologies, various vehicles and construction equipment are incorporating these technologies. Drive motors enable smooth driving, providing flexible and powerful performance for construction machinery; they also output stable and controllable torque, ensuring precise operation of the superstructure and other systems.

[0054] Considering the actual working requirements of construction machinery, it is usually not possible to simultaneously perform driving and superstructure operations. Therefore, it is necessary to decouple the power systems of the driving system and the superstructure system of the construction machinery and enable power switching.

[0055] In some embodiments, the power from the drive motor of the construction machinery, after passing through the gearbox, is connected to a transfer case. The transfer case connects the driving system and the superstructure system, and enables power switching between the driving system and the superstructure system.

[0056] In the above embodiments, the power of the drive motor needs to go through the transfer case after passing through the gearbox to achieve power decoupling, resulting in low power transmission efficiency of the drive motor in engineering machinery.

[0057] To address the potential problems in the above embodiments, this application provides a power system and construction machinery. By configuring multiple drive motors, including a first drive motor and at least one second drive motor, the first drive motor is connected to a gearbox, which is also connected to a driving system and a first system within the superstructure system. The at least one second drive motor is connected to a second and third system within the superstructure system. The gearbox transmits power from the first drive motor to the connected first system or driving system, and the second drive motor transmits power to the connected second and third systems. This allows for power switching between driving and superstructure operation of the construction machinery without the need for a transfer case, improving the transmission efficiency of the construction machinery.

[0058] 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.

[0059] 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, at least one second drive motor 102, a gearbox 103, and an upper structure system ( Figure 1 (not shown in the image) and driving system 105.

[0060] System installation ( Figure 1 (Not shown in the image) includes a first system 1041, a second system, and a third system.

[0061] 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 1041. The gearbox 103 transmits the power from the first drive motor 101 to the first system 1041.

[0062] The gearbox 103 is connected to the driving system 105 via direct drive; the gearbox 103 transmits the power from the first drive motor 101 to the driving system 105.

[0063] At least one second drive motor 102 is connected to the second system and the third system to drive the second system and the third system.

[0064] 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.

[0065] 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.

[0066] For example, the gearbox is used to transmit the power from the first drive motor to the connected system for superstructure operation or driving. The second drive motor is used to drive the connected system to perform the operation.

[0067] 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 the gear pump in the superstructure system, and the second drive motor can transmit power to the superstructure system through its output shaft. The gearbox can be connected to both the superstructure system and the driving system, and can transmit power from the drive motor to either the superstructure system or the driving system.

[0068] The superstructure system includes a first system, a second system, and a third system. The first, second, and third systems of the superstructure system can each be responsible for different types of superstructure operations.

[0069] In one example, in construction machinery such as a pump truck (concrete pump truck), the systems corresponding to different types of superstructure operations can include: boom system, pumping system, and auxiliary drive system.

[0070] 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.

[0071] Specifically, the transmission is equipped with a power take-off (PTO) port and a transmission output shaft. The transmission connects to the first system in the superstructure system via the PTO port and to the driving system via the transmission output shaft. In other words, the transmission transmits power from the first drive motor to the first system via the PTO port, and transmits power from the first drive motor to the driving system via the transmission output shaft.

[0072] In one example, when the construction machinery is in motion, the power of the first drive motor is transmitted to the driving system via the gearbox output shaft, and the driving system operates to move the construction machinery. It is understood that the second drive motor is not operating at this time.

[0073] 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 system through the power take-off port of the gearbox, enabling the first system to work and perform superstructure operations; on the other hand, the power of at least one second drive motor is transmitted to the second and third systems connected to the second drive motor, enabling the second and third systems to work and perform superstructure operations. It can be understood that at this time, the first drive motor and at least one second drive motor are working, but the power of the first drive motor is not transmitted to the driving system through the gearbox.

[0074] It should be noted that when the pump truck is in superstructure operation mode, the first drive motor and at least one second drive motor can operate fully or partially. That is, when the pump truck is in superstructure operation mode, at least one of the drive motors in the power system is working, but the gearbox transmits the power of the first drive motor to the first system connected to the gearbox, and does not transmit the power of the first drive motor to the driving system.

[0075] 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 for upper body operation through the power take-off port of the gearbox, or transmit the power transmitted by the first drive motor to the driving system for driving through direct drive.

[0076] For example, the input gear of the gearbox is coaxially connected to the output shaft of the first drive motor, and the power of the first drive motor is transmitted to the input gear of the gearbox. A gear is correspondingly installed at the power take-off port of the gearbox, and an output gear is coaxially connected to the output shaft of the gearbox. When the input gear of the gearbox meshes with the gear corresponding to the power take-off port, the power of the first drive motor is transmitted to the first system connected to it through the power take-off port of the gearbox; when the input gear of the gearbox meshes with the output gear on the output shaft of the gearbox, the power of the first drive motor is transmitted to the driving system connected to it through the output shaft of the gearbox.

[0077] 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 driven in forward and reverse rotation by a first drive motor and / or a second drive motor. The gear pumps can also be referred to as fixed displacement pumps.

[0078] In some embodiments, a variable pump is used in the superstructure system, which requires a valve block to switch the variable pump. However, this application uses a gear pump, which saves the valve block. The gear pump in the first system can be switched between forward and reverse rotation directly by driving the gearbox through the first drive motor, or the gear pump in the second system and the third system in the superstructure system can be switched between forward and reverse rotation directly by driving the second drive motor through the second drive motor. There is no need to set up a valve block, which saves space.

[0079] The power system provided in this application embodiment includes a first drive motor and at least one second drive motor. The first drive motor is connected to a gearbox, and the gearbox has a power take-off port. The power take-off port connects to a first system in the superstructure system, and the gearbox output shaft connects to a driving system. The gearbox transmits power from the first drive motor to the connected first system or driving system. A second system and a third system are connected to at least one second drive motor, directly driving the connected second and third systems for superstructure operations. On one hand, there is no need for a centrally located transfer case after the gearbox, thus shortening the transmission path of the first drive motor, reducing power loss, and improving the transmission efficiency of the construction machinery's power system. On the other hand, the absence of a transfer case in the power system saves manufacturing costs and reduces space occupation.

[0080] As can be seen from the foregoing embodiments, the gearbox is connected to the driving system and the first system, while at least one second drive motor is connected to the second and third systems of the superstructure system. This embodiment, in the foregoing... Figure 1 Based on the illustrated embodiment, this paper further explains how to connect the superstructure system when the number of second drive motors is different.

[0081] 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 number of at least one second drive motor 102 is one.

[0082] The second drive motor 102 is connected to the second system 1042 to drive the second system 1042; the second system 1042 is connected to the third system 1043, and the second system 1042 transmits the power transmitted by the second drive motor 102 to the third system 1043.

[0083] The first drive motor 101 is connected to the gearbox 103, and the first system 1041 is connected through the power take-off port of the gearbox 103. The gearbox transmits the power transmitted by the first drive motor 101 to the first system 1041 through the power take-off port. The driving system 105 is directly connected to the gearbox 103, and the gearbox transmits the power transmitted by the first drive motor 101 to the driving system 105.

[0084] For example, the second drive motor is used to drive the second system to perform the loading operation; the second system is used to transmit the power transmitted by the second drive motor to the third system to perform the loading operation.

[0085] Taking concrete pump trucks as an example of construction machinery, the following will explain the different working conditions of pump trucks. Figure 2 The power transmission process of the power system shown.

[0086] When the construction machinery is in operation, the power of the first drive motor is transmitted to the driving system through the gearbox, enabling the machinery to move. The gearbox includes a Transmission Control Unit (TCU). When the TCU receives a driving command from the Vehicle Control Unit (VCU), it controls the gearbox to transmit the power of the first drive motor to the driving system through the gearbox output shaft. Understandably, the second drive motor is not operating during this time.

[0087] Taking a concrete pump truck as an example, when the pump truck is in superstructure working condition, there can be further classifications of superstructure working conditions, such as boom operation condition, pumping operation condition, and mixed operation condition. Moreover, the first system, the second system, and the third system can be any combination of the aforementioned boom system, pumping system, and auxiliary drive system.

[0088] 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.

[0089] When the construction machinery is in boom operation mode, the first drive motor is working, and the second drive motor is not working. The gearbox transmits the power from the first drive motor to the boom system through the power take-off port, enabling the boom system to perform boom operations.

[0090] When the construction machinery is in pumping operation mode, the first drive motor is not working, and the second drive motor is working. The second drive motor transmits power to the pumping system to enable the pumping system to perform pumping operations; the pumping system then transmits the power transmitted by the second drive motor to the auxiliary drive system to enable the auxiliary drive system to perform auxiliary drive operations.

[0091] When the construction machinery is in a mixed operation condition, both the first drive motor and the second drive motor are working. On one hand, the gearbox transmits the power from the first drive motor to the boom system through the power take-off port, enabling the boom system to perform boom operations; on the other hand, the second drive motor transmits power to the pumping system, enabling the pumping system to perform pumping operations; the pumping system then transmits the power from the second drive motor to the auxiliary drive system, enabling the auxiliary drive system to perform auxiliary drive operations.

[0092] 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 boom system, the second system is the auxiliary drive system, and the third system is the pumping system.

[0093] This example is similar to the one described above. Figure 3 The difference in the example shown is that when the second drive motor transmits power to the pumping system and the auxiliary drive system, the second drive motor transmits power to the auxiliary drive system to enable the auxiliary drive system to perform auxiliary drive operations; the auxiliary drive system transmits the power transmitted by the second drive motor to the pumping system to enable the pumping system to perform pumping operations.

[0094] 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 a pumping system, the second system is an auxiliary drive system, and the third system is a boom system.

[0095] When the construction machinery is in a mixed operation condition, both the first drive motor and the second drive motor are working. On one hand, the gearbox transmits the power from the first drive motor to the pumping system through the power take-off port, enabling the pumping system to perform pumping operations. On the other hand, the second drive motor transmits power to the auxiliary drive system, enabling the auxiliary drive system to perform auxiliary drive operations. The auxiliary drive system then transmits the power from the second drive motor to the boom system, enabling the boom system to perform boom operations.

[0096] 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 pumping system, the second system is the boom system, and the third system is the auxiliary drive system.

[0097] This example is similar to the one described above. Figure 5 The difference in the example shown is that when the second drive motor transmits power to the boom system and the auxiliary drive system, the second drive motor transmits power to the boom system to enable the boom system to perform boom operations; the boom system transmits the power transmitted by the second drive motor to the auxiliary drive system to enable the auxiliary drive system to perform auxiliary drive operations.

[0098] 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 the auxiliary drive system, the second system is the boom system, and the third system is the pumping system.

[0099] When the construction machinery is in a mixed operation condition, both the first drive motor and the second drive motor are working. On one hand, the gearbox transmits the power from the first drive motor to the auxiliary drive system through the power take-off port, enabling the auxiliary drive system to perform auxiliary drive operations. On the other hand, the second drive motor transmits power to the boom system, enabling the boom system to perform boom operations. The boom system then transmits the power from the second drive motor to the pumping system, enabling the pumping system to perform pumping operations.

[0100] When the construction machinery is in a waiting-for-materials operation state, the first drive motor is working, and the second drive motor is not working. The gearbox transmits the power from the first drive motor to the auxiliary drive system through the power take-off port, enabling the auxiliary drive system to perform auxiliary drive operations.

[0101] 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.

[0102] This example is similar to the one described above. Figure 7 The difference in the example shown is that when the second drive motor transmits power to the boom system and the pumping system, the second drive motor transmits power to the pumping system to enable the pumping system to perform pumping operations; the pumping system transmits the power transmitted by the second drive motor to the boom system to enable the boom system to perform boom operations.

[0103] In the above embodiments, by providing a power take-off (PTO) port on the gearbox, the first system connects to the gearbox via the PTO port. The PTO port allows the power of the first drive motor to be transmitted to the first system for operation, or the gearbox can directly drive the power of the first drive motor to the driving system for propulsion. A second drive motor connects to the second and third systems, allowing the power of the second drive motor to be transmitted to both systems to complete the corresponding superstructure operations. On one hand, providing a PTO port on the gearbox and connecting it to the first system directly decouples the power between the superstructure system and the driving system, improving the transmission efficiency of the first drive motor. On the other hand, directly connecting the second and third systems with a second drive motor further shortens the transmission link, improving the transmission efficiency of the second drive motor. In summary, this improves the overall transmission efficiency of the power system.

[0104] Figure 9 The structural schematic diagram of the power system provided in this application Figure 9 .like Figure 9 As shown, in Figure 1Based on the illustrated embodiment, the number of at least one second drive motor is two. One second drive motor is connected to the second system 1042 to drive the second system 1042; the other second drive motor is connected to the third system 1043 to drive the third system 1043.

[0105] For example, one second drive motor is used to drive the second system to perform operations; another second drive motor is used to drive the third system to perform operations.

[0106] In construction machinery, taking concrete pump trucks as an example, when a pump truck is in superstructure working condition, there can be further classifications of superstructure working conditions, such as boom operation condition, pumping operation condition, and mixed operation condition. Furthermore, the first system, second system, and third system can be any combination of the aforementioned boom system, pumping system, and auxiliary drive system.

[0107] 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.

[0108] When the construction machinery is in boom operation mode, the first drive motor is working, while the two second drive motors are not working. The gearbox transmits the power from the first drive motor to the boom system through the power take-off port, enabling the boom system to perform boom operations.

[0109] When the construction machinery is in pumping operation mode, the first drive motor is not working, but both second drive motors are working. One second drive motor transmits power to the pumping system to enable the pumping operation; the other second drive motor transmits power to the auxiliary drive system to enable the auxiliary drive system to perform auxiliary drive operations.

[0110] When the construction machinery is in a mixed operation condition, the first drive motor is working, and both second drive motors are also working. On one hand, the gearbox transmits the power from the first drive motor to the boom system through the power take-off port, enabling the boom system to perform boom operations; on the other hand, one second drive motor transmits power to the pumping system, enabling the pumping system to perform pumping operations; the other second drive motor transmits power to the auxiliary drive system, enabling the auxiliary drive system to perform auxiliary drive operations.

[0111] When the construction machinery is in a waiting-for-materials operation, the first drive motor is not working. Of the two second drive motors, the one connected to the auxiliary drive system is working, while the one connected to the pumping system is not working. The other second drive motor connected to the auxiliary drive system transmits power to the auxiliary drive system, enabling it to perform auxiliary drive operations.

[0112] 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 boom system, the second system is the auxiliary drive system, and the third system is the pumping system.

[0113] This example is similar to the one described above. Figure 10 The difference in the examples shown is that when the construction machinery needs the auxiliary drive system to work, power is transmitted to the auxiliary drive system through a second drive motor connected to the auxiliary drive system; when the construction machinery needs the pumping system to work, power is transmitted to the pumping system through another second drive motor connected to the pumping system.

[0114] 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 a pumping system, the second system is an auxiliary drive system, and the third system is a boom system.

[0115] When the construction machinery is in boom operation mode, the first drive motor is not working. Of the two second drive motors, the one connected to the boom system is working, while the one connected to the auxiliary drive system is not working. The other second drive motor connected to the boom system transmits power to the boom system, enabling the boom system to perform boom operations.

[0116] When the construction machinery is in pumping operation mode, the first drive motor is working. Of the two second drive motors, the one connected to the boom system is not working, while the one connected to the auxiliary drive system is working. The gearbox transmits the power from the first drive motor to the pumping system through the power take-off port, enabling the pumping system to perform pumping operations. The second drive motor connected to the auxiliary drive system transmits power to the auxiliary drive system, enabling the auxiliary drive system to perform auxiliary drive operations.

[0117] When the construction machinery is in a mixed operation condition, the first drive motor is working, and both second drive motors are also working. On one hand, the gearbox transmits the power from the first drive motor to the pumping system through the power take-off port, enabling the pumping system to perform pumping operations; on the other hand, one second drive motor transmits power to the auxiliary drive system, enabling the auxiliary drive system to perform auxiliary drive operations; the other second drive motor transmits power to the boom system, enabling the boom system to perform boom operations.

[0118] When the construction machinery is in a waiting-for-materials operation state, the first drive motor is not working. Of the two second drive motors, one connected to the auxiliary drive system is working, while the other connected to the boom system is not working. The second drive motor connected to the auxiliary drive system transmits power to the auxiliary drive system, enabling it to perform auxiliary drive operations.

[0119] 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 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 12 The difference in the examples shown is that when the construction machinery needs the auxiliary drive system to work, power is transmitted to the auxiliary drive system through another second drive motor connected to the auxiliary drive system; when the construction machinery needs the boom system to work, power is transmitted to the boom system through a second drive motor connected to the boom system.

[0121] 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 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 first drive motor is not working. Of the two second drive motors, one connected to the boom system is working, while the other connected to the pumping system is not working. The second drive motor connected to the boom system transmits power to the boom system, enabling the boom system to perform boom operations.

[0123] When the construction machinery is in pumping operation mode, the first drive motor is working. Of the two second drive motors, one connected to the boom system is not working, while the other connected to the pumping system is working. The gearbox transmits the power from the first drive motor to the auxiliary drive system through the power take-off port, enabling the auxiliary drive system to perform auxiliary drive operations. The other second drive motor connected to the pumping system transmits power to the pumping system, enabling the pumping system to perform pumping operations.

[0124] When the construction machinery is in a mixed operation condition, the first drive motor is working, and both second drive motors are also working. On one hand, the gearbox transmits the power from the first drive motor to the auxiliary drive system through the power take-off port, enabling the auxiliary drive system to perform auxiliary drive operations; on the other hand, another second drive motor connected to the pumping system transmits power to the pumping system, enabling the pumping system to perform pumping operations; and a second drive motor connected to the boom system transmits power to the boom system, enabling the boom system to perform boom operations.

[0125] When the construction machinery is in a waiting-for-materials operation state, the first drive motor is working, while the two second drive motors are not working. The gearbox transmits the power from the first drive motor to the auxiliary drive system through the power take-off port, enabling the auxiliary drive system to perform auxiliary drive operations.

[0126] 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.

[0127] This example is similar to the one described above. Figure 14 The difference in the examples shown is that when the construction machinery needs the boom system to work, power is transmitted to the boom system through another second drive motor connected to the boom system; when the construction machinery needs the pumping system to work, power is transmitted to the pumping system through a second drive motor connected to the pumping system.

[0128] In the above embodiments, by setting a power take-off port on the gearbox, the first system is connected to the gearbox through the power take-off port. Through the power take-off port of the gearbox, the power of the first drive motor can be transmitted to the first system to enable the first system to perform operations, or the power of the first drive motor can be transmitted to the driving system to drive. By connecting the second system and the third system with two second drive motors respectively, the power decoupling between the second system and the third system can be further realized, which can further realize the diversified working conditions of the construction machinery.

[0129] In practical applications, the drive motor can convert electrical energy into mechanical energy, thereby driving the first, second, and third systems in the superstructure system. This embodiment, as described above... Figure 1 Based on the illustrated embodiment, the structure of the power system will be further explained.

[0130] 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 1Based on the embodiment shown, the power system 10 further includes an all-in-one module 106, with a first drive motor 101 and at least one second drive motor 102 respectively connected to the all-in-one module 106, and the all-in-one module 106 controlling the operation of the first drive motor 101 and / or the second drive motor 102.

[0131] For example, the multi-function module is electrically connected to the first drive motor and at least one second drive motor via wires or a bus. Optionally, the first drive motor and at least one 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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 illustrated embodiment, the power system 10 further includes a high-voltage box 107. The high-voltage box 107 is connected to the multi-function module 106, and 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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; the battery 108 is connected to a high-voltage box 107 to provide 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.

[0148] 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.

[0149] In the example above, by setting up a battery to store electrical energy, the power required to drive the motor can be provided.

[0150] 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.

[0151] 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.

[0152] Optionally, the external power source includes: a portable external power source, and / or, mains power.

[0153] Optionally, an external power source can also charge the battery.

[0154] 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.

[0155] 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; the range extender 109 is connected to the high-voltage box 107 to provide electrical energy to the first drive motor 101 and the second drive motor 102 through the high-voltage box 107 and the multi-function module 106.

[0156] 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.

[0157] Optionally, the range extender can also be connected to the battery to increase its range.

[0158] 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.

[0159] In construction machinery, such as concrete pump trucks, the range extension command can be issued by either the vehicle control unit (VCU) or the superstructure controller. When the pump truck is in operation, the VCU detects 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.

[0160] Alternatively, when the pump truck 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.

[0161] 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%.

[0162] 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.

[0163] 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.

[0164] In the above embodiments, the power system may further include a multi-functional module, which controls the operation of different drive motors to meet the different operating requirements of the construction machinery. A high-voltage box, battery, and range extender are provided to supply power to the drive motors via the multi-functional module and control the operation of the first drive motor and / or the second drive motor. Furthermore, when the drive power of the first drive motor and the second drive motor is 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 power to the first drive motor and at least one second drive motor, and the range extender can supplement the input power of the drive motors, improving their power performance while optimizing battery energy utilization.

[0165] The power system provided in this application embodiment, by setting up multiple drive motors, including a first drive motor and at least one second drive motor, connects the first drive motor to a gearbox, which in turn connects to a driving system and a first system within the superstructure system. The at least one second drive motor connects to a second and a third system within the superstructure system. By transmitting power from the first drive motor to the connected first system or driving system via the gearbox, and then combining this with the second drive motor to transmit power to the connected second and third systems, the power switching between driving and superstructure operation of the construction machinery can be achieved without the need for a transfer case, thereby improving the transmission efficiency of the construction machinery.

[0166] This application also provides a construction machinery that is equipped with a power system as provided in any of the foregoing embodiments.

[0167] For example, construction machinery can be mechanical equipment that has both driving and superstructure working conditions in engineering projects.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] This application also provides a control method for a power system, which is applied to a controller in engineering machinery. The method includes:

[0172] A first control command is sent to the first drive motor in the construction machinery to drive the gearbox, so that the gearbox can transmit the power transmitted by the first drive motor to the connected first system for superstructure operation, or to the connected driving system for driving.

[0173] Send a second control command to the second drive motor in the construction machinery so that the second drive motor can drive the connected second system and third system to perform operations.

[0174] Specifically, since there is at least one second drive motor, there is at least one second control command, which is equal to the number of second drive motors.

[0175] Each second control command is used to control the start and stop of the corresponding second drive motor.

[0176] 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.

[0177] For example, the engineering machinery provided in the foregoing embodiments may further include a controller. The controller sends a first control command to a first drive motor and a second control command to at least one second drive motor.

[0178] In one example, when the construction machinery is currently in the superstructure operation state, the controller executes:

[0179] A first control command is sent to the first drive motor, indicating that the current construction machinery is in the superstructure operation condition, the first drive motor starts to work, and the gearbox transmits the power of the first drive motor to the superstructure system;

[0180] And / or, send a second control command to at least one second drive motor, the control command indicating that the current construction machinery is in the superstructure operation condition, at least one second drive motor starts to work, and drives the superstructure system connected to the second drive motor to work.

[0181] 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.

[0182] 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 at least one second drive motor to start.

[0183] 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.

[0184] 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, at least one second drive motor, and 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.

[0185] 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.

[0186] 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, at least one 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 gearbox transmits the power transmitted by the first drive motor to the first system; The gearbox is connected to the driving system via a direct drive method, and the gearbox transmits the power transmitted by the first drive motor to the driving system; At least one of the second drive motors is connected to the second system and the third system to drive the second system and the third system.

2. The power system according to claim 1, characterized in that, The number of second drive motors is one; the second drive motor is connected to the second system to drive the second system; the second system is connected to the third system, and the second system transmits the power transmitted by the second drive motor to the third system.

3. The power system according to claim 1, characterized in that, There are two second drive motors; one second drive motor is connected to the second system to drive the second system; the other second drive motor is connected to the third system to drive the third system.

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, wherein the first drive motor and the at least one second drive motor are respectively connected to the all-in-one module, and the all-in-one module controls 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