Non-road mobile machine and power transmission device thereof

Abstract

A non-road mobile machine and a power transmission device thereof, the non-road mobile machine comprising a power transmission device, the power transmission device comprising: a transfer case comprising a case body, and an engine interface and a first output end arranged on the case body; the first output end is provided with a power generation interface; the engine is connected with the transfer case through an engine interface; the power generation mechanism is connected with the transfer case through a power generation interface; wherein the power generation mechanism comprises a first power generator and a second power generator, and the output end of the first power generator is connected with the first power utilization mechanism through the power generator controller; the engine drives the first generator to generate electricity through the transfer case, and voltage is converted through the generator controller and then input to the first electricity utilization mechanism. The output end of the second generator is connected with the second electricity utilization mechanism, and the engine drives the second generator to generate electricity through the transfer case and directly inputs the electricity into the second electricity utilization mechanism.

Description

Technical Field

[0001] The utility model relates to a non-road mobile machine, in particular to a non-road mobile machine and a power transmission device thereof. Background Art

[0002] At present, the hybrid power transmission system of non-road mobile machinery is an engine-driven generator, which supplies power to the motor controllers of each system to drive the motor, which in turn drives the hydraulic pump. Its structure is complex and has many transmission components, which reduces the transmission efficiency, making the overall structure more complex and the layout more difficult.

[0003] In addition, non-road mobile machinery has a 220V or 380V power demand. Traditional mechanical structures mostly use hydraulic pumps to drive hydraulic motors, and then drive 380V AC generators through hydraulic motors to output 220V or 380V AC. This structure has a long transmission chain and also causes the problem of low transmission efficiency. For hybrid non-road mobile machinery, high-power DCAC can be used to convert 600V DC into 220V or 380V AC, but due to the small number of applications, scarcity of products, high cost of new product development, and difficulty in matching for host manufacturers, it is difficult for the host equipment to achieve related power functions. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a non-road mobile machine and a power transmission device thereof in view of the above-mentioned defects of the prior art.

[0005] In order to achieve the above-mentioned object, the utility model provides a power transmission device for a non-road mobile machinery, which includes:

[0006] The transfer case comprises a case body, an engine interface and a first output end arranged on the case body; the first output end is provided with a power generation interface;

[0007] an engine connected to the transfer case via the engine interface;

[0008] A power generation mechanism connected to the transfer case via the power generation interface;

[0009] Wherein, the power generation mechanism includes a first generator and a second generator, the output end of the first generator is connected to a first power consumption mechanism through a generator controller; the engine drives the first generator to generate electricity through the transfer case, and the voltage is converted by the generator controller and input to the first power consumption mechanism; the output end of the second generator is connected to a second power consumption mechanism, and the engine drives the second generator to generate electricity through the transfer case and directly inputs the electricity to the second power consumption mechanism.

[0010] The power transmission device of the non-road mobile machinery mentioned above, wherein, further comprises:

[0011] A distribution box is arranged between the generator controller and the first power-consuming mechanism. The generator controller converts the AC power of the first generator into DC power and inputs it into the distribution box. The output end of the distribution box is respectively connected to the energy storage system and the first power-consuming mechanism, and distributes electric energy to the energy storage system and the first power-consuming mechanism as needed.

[0012] The power transmission device of the above-mentioned non-road mobile machinery, among which, also includes a VCU vehicle-mounted controller, which is respectively connected to the first power-consuming mechanism and the energy storage system. The first power-consuming mechanism includes a walking control component and an auger control component. The output ends of the walking control component and the auger control component are respectively connected to a walking motor and an auger motor.

[0013] The power transmission device of the non-road mobile machinery mentioned above, wherein, further comprises:

[0014] An engine controller is connected to the engine; the VCU vehicle-mounted controller is connected to the generator controller and the engine controller respectively, the VCU vehicle-mounted controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the engine controller and adjusts the power generation of the first generator through the generator controller.

[0015] The power transmission device of the non-road mobile machinery mentioned above, wherein, further comprises:

[0016] an engine controller connected to the engine; and

[0017] The range extender controller is connected to the generator controller, the VCU on-board controller and the engine controller respectively. The range extender controller controls the VCU on-board controller to read the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the engine controller and the power generation of the first generator through the generator controller.

[0018] The power transmission device of the non-road mobile machinery mentioned above, wherein, further comprises:

[0019] A hydraulic pump is arranged in parallel with the power generation mechanism, the transfer case is provided with a second output end, the second output end is provided with a hydraulic pump interface, the hydraulic pump is connected to the transfer case through the hydraulic pump interface, and the engine synchronously adjusts the rotation speed of the power generation mechanism and the hydraulic pump through the transfer case.

[0020] The above-mentioned power transmission device of non-road mobile machinery, wherein the hydraulic pump includes a scraper pump and a rammer pump, the hydraulic pump interface includes a first hydraulic pump interface and a second hydraulic pump interface, the scraper pump is installed on the first hydraulic pump interface and connected to the scraper motor; the rammer pump is installed on the second hydraulic pump interface and connected to the rammer motor; a scraper solenoid valve is arranged between the scraper pump and the scraper motor, and a rammer solenoid valve is arranged between the rammer pump and the rammer motor; the scraper solenoid valve and the rammer solenoid valve are respectively connected to the VCU vehicle-mounted controller, and the VCU vehicle-mounted controller respectively adjusts the output torque and speed of the scraper motor and the rammer motor through the scraper solenoid valve and the rammer solenoid valve.

[0021] The power transmission device of the non-road mobile machinery mentioned above, wherein it also includes a heat dissipation mechanism, further includes:

[0022] Air guide hood;

[0023] A fan, arranged corresponding to the air guide cover;

[0024] a heat dissipation component, arranged on one side of the air guide cover, the heat dissipation component comprising an intercooler air radiator, an engine coolant radiator, an electric drive coolant radiator and a hydraulic oil radiator arranged in parallel, the intercooler air radiator and the engine coolant radiator are respectively connected to the engine; the electric drive coolant radiator is connected to the first power-consuming mechanism and the generator control component; the hydraulic oil radiator is connected to the hydraulic pump; and

[0025] A fan speed change mechanism is connected to the fan; the fan speed change mechanism is connected to the VCU vehicle-mounted controller;

[0026] Wherein, the VCU vehicle-mounted controller is connected to the heat dissipation component, and controls the fan speed change mechanism to adjust the speed of the fan according to the temperature data of the heat dissipation component.

[0027] The above-mentioned power transmission device of the non-road mobile machinery, wherein the output end of the electric drive coolant radiator is provided with a first heat dissipation circuit, a second heat dissipation circuit and a third heat dissipation circuit in parallel; the travel control component is arranged on the first heat dissipation circuit; the auger control component is arranged on the second heat dissipation circuit; the generator controller and the power generation mechanism are arranged on the third heat dissipation circuit.

[0028] In order to better achieve the above-mentioned purpose, the utility model also provides a non-road mobile machinery, which includes the above-mentioned power transmission device.

[0029] The beneficial effects of the utility model are:

[0030] The utility model effectively solves the requirements of different voltages required by different electrical components through the power generation mechanism, thereby simplifying the overall structure, further improving the transmission efficiency, and making the power supply more convenient to use; the engine can drive the power generation mechanism and the hydraulic pump at the same time through the transfer case, reducing the transmission components, achieving a compact and reasonable overall layout, and improving the overall transmission efficiency of the power transmission device; the engine can synchronously adjust the rotation speed of the power generation mechanism and the hydraulic pump through the transfer case, so that the generator and the hydraulic pump can work in the high-efficiency area for a longer time, further improving the overall power transmission efficiency of the power transmission device.

[0031] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of a power transmission device according to an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the transfer case structure of an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram of the heat dissipation mechanism structure of an embodiment of the utility model;

[0035] Figure 4 This is a working principle diagram of a power transmission device according to an embodiment of the utility model.

[0036] Among them, the reference numerals

[0037] 1 Engine

[0038] 2 transfer case

[0039] 21 Cabinet

[0040] 22 Engine interface

[0041] 23 Power generation interface

[0042] 24 First hydraulic pump interface

[0043] 25 Second hydraulic pump interface

[0044] 26 Lubricating oil pump

[0045] 3. Power generation mechanism

[0046] 31 First Generator

[0047] 32 Second generator

[0048] 4 Hydraulic pump

[0049] 41 Scraper Pump

[0050] 42 Rammer Pump

[0051] 5. Heat dissipation mechanism

[0052] 51 air guide cover

[0053] 52 Fan

[0054] 53 intercooler air radiator

[0055] 54 Engine coolant radiator

[0056] 55 electric drive coolant radiator

[0057] 56 Hydraulic oil radiator

[0058] 57 Fan speed change mechanism DETAILED DESCRIPTION

[0059] The structural principle and working principle of the utility model are described in detail below in conjunction with the accompanying drawings:

[0060] In the present utility model, non-road mobile machinery refers to machinery used on non-roads, which is self-driven or has dual functions or is not self-driven but can be moved from one place or moved to another place, such as excavators, bulldozers, loaders, rollers, pavers, graders, grooving machines, pile-driving machinery, forklifts, cranes, loading and unloading machinery, tractors and asphalt transfer vehicles, etc., all of which can be installed and use the power transmission device of the present utility model. Since the composition, structure, relative position relationship, connection relationship and function of other parts of the non-road mobile machinery are all relatively mature existing technologies, they will not be elaborated here. Only the power transmission device of the present utility model will be described in detail below.

[0061] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a power transmission device according to an embodiment of the utility model. Figure 2The schematic diagram of the structure of a transfer case 2 of an embodiment of the utility model. The power transmission device of the non-road mobile machinery of the utility model comprises: a transfer case 2, comprising a case body 21 and an engine interface 22, a first output end and a lubricating oil pump 26 arranged on the case body 21; the first output end is provided with a power generation interface 23; an engine 1, the output end of the engine 1 is connected to the transfer case 2 through the engine interface 22, and the engine 1 drives the power generation mechanism 3 through the transfer case 2 to provide sufficient power for the power consumption mechanism of the whole vehicle; the power generation mechanism 3 is connected to the transfer case 2 through the power generation interface 23. The power generation mechanism 3 includes a first generator 31 and a second generator 32, which can be arranged in series. The output end of the first generator 31 is connected to a first power consumption mechanism through a generator controller, and the generator controller is used to convert voltage; the engine 1 drives the first generator 31 to generate electricity through the transfer case 2, and the voltage is converted by the generator controller and input to the first power consumption mechanism; the output end of the second generator 32 is connected to a second power consumption mechanism, and the engine 1 drives the second generator 32 to generate electricity through the transfer case 2 and directly inputs the electricity to the second power consumption mechanism. The second power consumption mechanism may include a post-ironing heating mechanism, a refrigerator, an air conditioner, a kettle, an electric tool, a pneumatic tool, etc.

[0062] This embodiment further includes a hydraulic pump 4, which is arranged in parallel with the power generation mechanism 3, and the transfer case 2 is provided with a second output end, and the second output end is provided with a hydraulic pump interface, and the hydraulic pump 4 is connected to the transfer case 2 through the hydraulic pump interface; wherein, the engine 1 drives the power generation mechanism 3 to generate electricity through the transfer case 2, and synchronously adjusts the speed of the power generation mechanism 3 and the hydraulic pump 4 through the transfer case 2. The engine 1 can drive the power generation mechanism 3 and the hydraulic pump 4 at the same time through the transfer case 2, which not only reduces the number of transmission components, realizes a compact and reasonable overall layout, but also improves the overall transmission efficiency of the power transmission device.

[0063] In this embodiment, the hydraulic pump 4 includes a scraper pump 41 and a rammer pump 42, which are preferably arranged in parallel, and motors are provided at the output ends of the scraper pump 41 and the rammer pump 42. The hydraulic pump interface includes a first hydraulic pump interface 24 and a second hydraulic pump interface 25, the scraper pump 41 is installed on the first hydraulic pump interface 24 and connected to the scraper motor; the rammer pump 42 is installed on the second hydraulic pump interface 25 and connected to the rammer motor, a scraper solenoid valve is provided between the scraper pump 41 and the scraper motor, and a rammer solenoid valve is provided between the rammer pump 42 and the rammer motor, the VCU on-board controller is respectively connected to the scraper solenoid valve and the rammer solenoid valve, and the output torque and speed of the scraper motor and the rammer motor are adjusted by the scraper solenoid valve and the rammer solenoid valve respectively, and the scraper solenoid valve and the rammer solenoid valve are both preferably hydraulic solenoid valves.

[0064] In this embodiment, the circuit with the first generator 31 as the power source is: engine 1-transfer case 2-first generator 31-generator controller-distribution box-first power consumption mechanism, the engine 1 drives the first generator 31 to generate electricity and generate 380V AC through the transfer case 2, and this part of the electric energy is converted into voltage through the generator controller, and the 380V AC is converted into 600V DC, and then transmitted to the first power consumption mechanism through the distribution box, so that the first power consumption mechanism set at the output end of the distribution box can be smoothly powered for operation. The output end of the second generator 32 is provided with a second power consumption mechanism, and the circuit with the second generator 32 as the power source is: engine 1-transfer case 2-second generator 32-second power consumption mechanism, the second generator 32 directly powers the second power consumption mechanism, that is, the engine 1 drives the second generator 32 to generate electricity and generate 220V or 380V AC through the transfer case 2, and can be directly input into the second power consumption mechanism for operation. The engine 1 drives the transfer case 2 and then drives the generator 3 and the hydraulic pump 4 at the same time. The first generator 31 and the second generator 32 effectively solve the requirements of different voltages required by different electrical components, thereby simplifying the overall structure, further improving the transmission efficiency of the whole system, and making the power supply more convenient to use.

[0065] This embodiment may also include a VCU vehicle-mounted controller, which is respectively connected to the first power-consuming mechanism and the energy storage system; the first power-consuming mechanism includes a walking control component and an auger control component, and the walking control component and the auger control component are preferably arranged in parallel, and the output ends of the walking control component and the auger control component are respectively connected to the walking motor and the auger motor, and the distribution box can disperse the electric energy and transmit it to the corresponding first power-consuming mechanism at the same time. The walking control component includes a left / right walking controller arranged in parallel, and the auger control component includes a left / right auger controller, which is respectively connected to the VCU vehicle-mounted controller, and the output ends of the left / right walking controller and the left / right auger controller are respectively connected to the walking motor and the auger motor. The left travel controller is connected to the left travel motor, and the right travel controller is connected to the right travel motor. The electric energy can be dispersed through the distribution box, and the left travel controller and the right travel controller are powered respectively, thereby driving the left travel motor and the right travel motor to operate respectively; the left auger controller is connected to the left auger motor, and the right auger controller is connected to the right auger motor. The left auger controller and the right auger motor are powered respectively through the distribution box, thereby driving the left auger motor and the right auger motor to operate respectively.

[0066] See also Figure 3 , Figure 3 The figure is a schematic diagram of the structure of the heat dissipation mechanism 5 of an embodiment of the utility model. The present embodiment also includes a heat dissipation mechanism 5, which can be arranged in the engine compartment of the non-road mobile machinery, including: an air duct 51; a fan 52, which is arranged corresponding to the air duct 51, and the rotation axis of the fan 52 is preferably arranged parallel to or coincident with the center line of the air duct 51, and the fan 52 is a high-power heat dissipation fan, and its power is preferably 10-20kW; the rotation speed percentage of the fan 52 is 0-100%; a heat dissipation component, which is arranged on one side of the air duct 51, and the heat dissipation component includes an intercooler air radiator 53, an engine coolant radiator 54, an electric drive coolant radiator 55 and a hydraulic oil radiator 56 arranged in parallel, and the intercooler air radiator 53 and the engine coolant radiator 54 are arranged in parallel. The cooling liquid radiator 54 is connected to the engine 1 respectively; the electric drive cooling liquid radiator 55 is connected to the first power consumption mechanism and the generator control component, and the generator control component includes a generator controller, a first generator 31 and a second generator 32; the hydraulic oil radiator 56 is connected to the hydraulic pump 4; and the fan speed change mechanism 57 is connected to the fan 52, which can be installed on the fan 52 and is coaxially arranged with the fan 52; the fan speed change mechanism 57 is connected to the VCU vehicle controller; wherein the VCU vehicle controller is connected to the heat dissipation component, and controls the fan speed change mechanism 57 to adjust the speed of the fan 52 according to the temperature data of the heat dissipation component. The fan speed change mechanism 57 can be a silicone oil clutch, a hydraulic motor or a fan motor, etc.

[0067] Among them, the output end of the electric drive coolant radiator 55 is provided with a first heat dissipation circuit, a second heat dissipation circuit and a third heat dissipation circuit in parallel, the travel controller is provided on the first heat dissipation circuit; the auger controller is provided on the second heat dissipation circuit; the generator controller and the generator are provided on the third heat dissipation circuit, and the required flow rate and flow resistance of the components on each heat dissipation circuit are consistent, so that the coolant flow through each heat dissipation circuit is more balanced. Cooling water pumps can also be provided in the first heat dissipation circuit, the second heat dissipation circuit and the third heat dissipation circuit, and the first heat dissipation circuit, the second heat dissipation circuit and the third heat dissipation circuit are all connected to the expansion water tank. That is, the first heat dissipation circuit: electric drive coolant radiator 55—cooling water pump—left travel controller and left travel motor and right travel controller and right travel motor—electric drive coolant radiator 55; the second heat dissipation circuit: electric drive coolant radiator 55—cooling water pump—left auger controller and left auger motor and right auger controller and right auger motor—electric drive coolant radiator 55; the third heat dissipation circuit: electric drive coolant radiator 55—cooling water pump—generator controller and generator—electric drive coolant radiator 55.

[0068] In this embodiment, a temperature matrix of engine intercooler air, engine coolant, hydraulic oil, and electric drive system coolant may be provided in the VCU on-board controller. The VCU on-board controller intelligently adjusts the rotation speed of the fan 52 according to the temperature data of the engine intercooler air, engine coolant, hydraulic oil, and electric drive system coolant, so that the intercooler air radiator 53, the engine coolant radiator 54, the electric drive coolant radiator 55, and the hydraulic oil radiator 56 reach an ideal operating temperature range, thereby extending the service life of the heat dissipation components and saving fuel and reducing noise. At the same time, the thermal management is more reasonable and the structure is simpler, which can meet the heat dissipation requirements of the engine 1, the hydraulic system, and the electric drive system.

[0069] A temperature alarm switch may also be provided on the heat dissipation mechanism 5 and connected to the VCU vehicle controller 51. Alternatively, an engine coolant temperature alarm, an intercooler air temperature alarm, an electric drive coolant temperature alarm and a hydraulic oil temperature alarm are respectively installed on the heat dissipation circuits corresponding to the engine coolant radiator, the intercooler air radiator, the electric drive coolant radiator and the hydraulic oil radiator, and are respectively connected to the VCU vehicle controller. When the temperature of the engine intercooler air is at the first set temperature, such as 120°C, the intercooler air radiator 53 alarms; when the temperature of the engine coolant is at the second set temperature, such as 105°C, the engine coolant radiator 54 alarms; when the temperature of the hydraulic oil is at the third set temperature, such as 85°C, the hydraulic oil radiator 56 alarms; when the temperature of the electric drive device coolant is at the fourth set temperature, such as 85°C, the electric drive coolant radiator 55 alarms.

[0070] See also Figure 4 , Figure 4The working principle diagram of the power transmission device of one embodiment of the utility model. In this embodiment, it can also include a distribution box, preferably a high-voltage distribution box PDU, which is connected to the first generator 31 through a generator controller, and the generator controller converts the AC power of the first generator 31 into DC power and inputs it into the distribution box; wherein the output ends of the distribution box are respectively connected to the energy storage system and the first power consumption mechanism, and the distribution box distributes the electric energy to the energy storage system and the first power consumption mechanism as needed. Preferably, the first output end of the distribution box is connected to the energy storage system, and the second output end is connected to the first power consumption mechanism, and the engine 1 can drive the generator to generate electricity through the transfer case 2, and divert the electric energy through the distribution box, wherein a part of the electric energy is input to the energy storage system, and the rest of the electric energy is input to the first power consumption mechanism. When the energy storage system has sufficient power and the generator's power generation is insufficient, the electric energy of the energy storage system and the generator can be simultaneously input to the first power consumption mechanism through the distribution box. Under the joint action of the energy storage system and the generator, the electric drive system of the entire vehicle can be in a voltage-stabilizing state to ensure the stability of the input voltage of the first power consumption mechanism; at the same time, the output peak power is greater.

[0071] This embodiment may also include an engine controller connected to the engine 1; the VCU on-board controller is connected to the generator controller and the engine controller respectively, the VCU on-board controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine 1 through the engine controller and adjusts the power generation of the first generator 31 through the generator controller. In another embodiment, it may include an engine controller and a range extender controller, the engine controller is preferably an ECU engine controller, connected to the engine 1; the range extender controller is preferably an RCU range extender controller, connected to the generator controller, the VCU on-board controller and the engine controller respectively, the range extender controller controls the VCU on-board controller to read the load demand of the first power-consuming mechanism, and adjusts the speed of the engine 1 through the engine controller and adjusts the power generation of the first generator 31 through the generator controller. That is, the RCU range extender controller reads the load requirements of the travel control component and the auger control component through the VCU on-board controller, and adjusts the speed of the engine 1 through the engine controller; the engine 1 can not only synchronously adjust the speed of the power generation mechanism 3 and the hydraulic pump 4 through the transfer case 2, but also adjust the power generation of the first generator 31 through the generator controller, so as to meet the load requirements of the auger control component and the travel control component. Since the hydraulic pump 4 can be adjusted to work at a variable speed according to the load demand, the hydraulic pump 4 can be in a state of large displacement for a longer time, further improving the transmission efficiency of the hydraulic system. In addition, since the speed of the scraper pump 41 and the rammer pump 42 will fluctuate when the engine controller adjusts the speed of the engine 1, the VCU on-board controller adjusts the solenoid valve to ensure that the output torque and speed of the scraper motor and the rammer motor can remain stable.

[0072] This embodiment can adopt two starting modes, namely, starter starting and large generator reverse drag starting, as required. When the starter is started, the engine 1 is in a stopped state, the VCU vehicle controller establishes communication with the engine controller through the range extender controller, and starts the engine 1 through the engine controller; when the large generator is reverse drag starting, the engine 1 is in a stopped state, the VCU vehicle controller establishes communication with the generator controller through the range extender controller, and starts the first generator 31 to rotate through the generator controller, and the first generator 31 drags the engine 1 to rotate through the transfer case 2, thereby starting the engine 1. In the large generator reverse drag starting mode, the instantaneous starting power can reach 120kW, which greatly improves the starting power of the engine 1, so that it can more easily deal with the starting difficulty problem caused by excessive system load in non-road mobile machinery in plateau and low temperature conditions, and ensure that the engine 1 can quickly enter the working state.

[0073] In addition, the large generator reverse-drag starting mode can also have the function of automatic start and stop of engine 1. When the non-road mobile machinery is in working condition, turn on the automatic start and stop switch, and the engine 1 will automatically stop when idling without load for more than the set time, such as 60S. Turn on any load switch, and the large generator will reverse-drag the engine to start quickly in 2S, and the working state can be restored instantly, while reducing fuel consumption and noise pollution.

[0074] In this embodiment, the first generator 31, the generator controller, the distribution box and the first power-consuming mechanism are connected through a first line, which is a high-voltage circuit, and the second generator 32 and the second power-consuming mechanism are also high-voltage lines; the engine controller, the RCU range extender controller, the generator controller and the VCU vehicle-mounted controller are connected through a second line, which is a low-voltage communication line; the hydraulic pump 4 and each motor are connected through a third line, which is a hydraulic oil circuit.

[0075] During operation, the first generator 31 is driven to generate electricity through the engine 1 and the transfer case 2, and the voltage is converted through the generator controller to convert 380V AC into 600V DC; then the electric energy (i.e. 600V DC) is diverted through the distribution box, part of which is input into the energy storage system for storage and standby, and the other part is input into the first power-consuming mechanism through the high-voltage bus for power supply; the VCU on-board controller is controlled by the range extender controller to read the load demand of the first power-consuming mechanism, and the speed of the engine 1 is adjusted through the engine controller and the power generation of the first generator 31 is adjusted through the generator controller, and the speed of the first generator 31 and the second generator 32 and the hydraulic pump 4 are synchronously adjusted through the transfer case 2; the solenoid valve is controlled by the VCU on-board controller to adjust the output torque and speed of the motor.

[0076] The utility model engine 1 can drive the generator mechanism 3 and the hydraulic pump 4 at the same time through the transfer case 2, which not only reduces the transmission components, realizes a compact and reasonable overall layout, but also improves the overall transmission efficiency of the power transmission system. The engine 1 can synchronously adjust the speed of the generator mechanism 3 and the hydraulic pump 4 through the transfer case 2, so that the generator mechanism 3 and the hydraulic pump 4 work in the high-efficiency zone for a longer time, further improving the overall power transmission efficiency of the power transmission device. The heat dissipation mechanism 5 realizes the integration of the thermal management system, reduces the thermal management components and optimizes the heat dissipation air flow direction, making the overall structure layout more concise. The starting efficiency of the power transmission device is improved by two starting modes, namely, starter starting and large generator reverse starting; large generator reverse starting can more easily deal with the problem of starting difficulties caused by excessive system load in non-road mobile machinery under plateau and low temperature conditions, ensuring that the engine 1 can quickly enter the working state; at the same time, in conjunction with the automatic start-stop technology, the fuel consumption and noise level of the power transmission device can be reduced, improving the economy of the equipment and the comfort of operation and driving.

[0077] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A power transmission device for a non-road mobile machinery, characterized in that: include: The transfer case comprises a case body, an engine interface and a first output end arranged on the case body; the first output end is provided with a power generation interface; an engine connected to the transfer case via the engine interface; A power generation mechanism connected to the transfer case via the power generation interface; Wherein, the power generation mechanism includes a first generator and a second generator, the output end of the first generator is connected to a first power consumption mechanism through a generator controller; the engine drives the first generator to generate electricity through the transfer case, and the voltage is converted by the generator controller and input to the first power consumption mechanism; the output end of the second generator is connected to a second power consumption mechanism, and the engine drives the second generator to generate electricity through the transfer case and directly inputs the electricity to the second power consumption mechanism.

2. The power transmission device for non-road mobile machinery according to claim 1, characterized in that: Also includes: A power distribution box, arranged between the generator controller and the first power-consuming mechanism, wherein the generator controller converts the AC power of the first generator into DC power and inputs the DC power into the power distribution box; The output end of the power distribution box is connected to the energy storage system and the first power consumption mechanism respectively, and distributes electric energy to the energy storage system and the first power consumption mechanism as needed.

3. The power transmission device for non-road mobile machinery according to claim 2, characterized in that: It also includes a VCU vehicle-mounted controller, which is respectively connected to the first power-consuming mechanism and the energy storage system. The first power-consuming mechanism includes a walking control component and an auger control component. The output ends of the walking control component and the auger control component are respectively connected to a walking motor and an auger motor.

4. The power transmission device for non-road mobile machinery according to claim 3, characterized in that: Also includes: An engine controller is connected to the engine; the VCU vehicle-mounted controller is connected to the generator controller and the engine controller respectively, the VCU vehicle-mounted controller reads the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the engine controller and adjusts the power generation of the first generator through the generator controller.

5. The power transmission device for non-road mobile machinery according to claim 3, characterized in that: Also includes: an engine controller connected to the engine; as well as The range extender controller is connected to the generator controller, the VCU on-board controller and the engine controller respectively. The range extender controller controls the VCU on-board controller to read the load demand of the first power-consuming mechanism, and adjusts the speed of the engine through the engine controller and the power generation of the first generator through the generator controller.

6. The power transmission device for non-road mobile machinery according to claim 3, characterized in that: Also includes: A hydraulic pump is arranged in parallel with the power generation mechanism, the transfer case is provided with a second output end, the second output end is provided with a hydraulic pump interface, the hydraulic pump is connected to the transfer case through the hydraulic pump interface, and the engine synchronously adjusts the rotation speed of the power generation mechanism and the hydraulic pump through the transfer case.

7. The power transmission device for non-road mobile machinery according to claim 6, characterized in that: The hydraulic pump includes a scraper pump and a rammer pump, the hydraulic pump interface includes a first hydraulic pump interface and a second hydraulic pump interface, the scraper pump is installed on the first hydraulic pump interface and connected to the scraper motor; the rammer pump is installed on the second hydraulic pump interface and connected to the rammer motor; a scraper solenoid valve is arranged between the scraper pump and the scraper motor, and a rammer solenoid valve is arranged between the rammer pump and the rammer motor; the scraper solenoid valve and the rammer solenoid valve are respectively connected to the VCU vehicle-mounted controller, and the VCU vehicle-mounted controller respectively adjusts the output torque and speed of the scraper motor and the rammer motor through the scraper solenoid valve and the rammer solenoid valve.

8. The power transmission device for non-road mobile machinery according to claim 6, characterized in that: Also includes a heat dissipation mechanism, further comprising: Air guide hood; A fan, arranged corresponding to the air guide cover; a heat dissipation component, arranged on one side of the air guide cover, the heat dissipation component comprising an intercooler air radiator, an engine coolant radiator, an electric drive coolant radiator and a hydraulic oil radiator arranged in parallel, the intercooler air radiator and the engine coolant radiator are respectively connected to the engine; the electric drive coolant radiator is connected to the first power-consuming mechanism and the generator control component; the hydraulic oil radiator is connected to the hydraulic pump; and A fan speed change mechanism is connected to the fan; the fan speed change mechanism is connected to the VCU vehicle-mounted controller; Wherein, the VCU vehicle-mounted controller is connected to the heat dissipation component, and controls the fan speed change mechanism to adjust the speed of the fan according to the temperature data of the heat dissipation component.

9. The power transmission device for non-road mobile machinery according to claim 8, characterized in that: The output end of the electric drive coolant radiator is provided with a first heat dissipation circuit, a second heat dissipation circuit and a third heat dissipation circuit in parallel; the travel control component is arranged on the first heat dissipation circuit; the auger control component is arranged on the second heat dissipation circuit; the generator controller and the power generation mechanism are arranged on the third heat dissipation circuit.

10. A non-road mobile machine, characterized in that: Comprising a power transmission device according to any one of claims 1-9.

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