A hybrid riding lawn mower

Abstract

The present application proposes a hybrid riding lawn mower, comprising: a chassis assembly, a mowing assembly and a driving wheel assembly and a universal wheel assembly arranged on the same side as the mowing assembly, a seat assembly arranged on the chassis assembly, an operating lever assembly arranged on the front side of the seat assembly, an instrument monitoring console arranged on one side of the seat assembly, a battery module arranged under the seat assembly, and an internal combustion engine arranged on the rear side of the seat assembly. The riding lawn mower uses an on-board lithium-ion power battery and an internal combustion engine as driving energy, and can operate in different working modes such as pure electric motor mowing, gasoline engine mowing, power generation mowing, and dual-power mowing of a combination of pure electric and gasoline engines, which can meet the needs of high power in multiple working conditions, as well as the needs of long working hours, improve efficiency, and save energy.

Description

Technical Field

[0001] The invention belongs to the technical field of gardening equipment, and in particular relates to a hybrid power riding lawn mower. Background Art

[0002] At present, most riding lawn mowers are driven by internal combustion engines, and a small number of them use lead-acid batteries as the driving system of the lawn mower (to drive two walking motors and two mowing motors, a total of four motors). The use of lead-acid batteries has the disadvantages of pollution, large size and heavy weight. Generally, the weight of a 5 kWh lead-acid battery is about 112 kg. The long charging time and short working time of the battery have become the bottleneck of its development.

[0003] Therefore, a new type of riding lawn mower is needed to take both environmental protection and economic benefits into consideration. Summary of the invention

[0004] In order to overcome the above shortcomings, one of the objectives of the present application is to provide a riding lawn mower with hybrid power to take into account both environmental protection and economic benefits.

[0005] To achieve the above objectives, this application adopts the following technical solutions:.

[0006] A hybrid riding lawn mower, characterized by comprising:

[0007] A chassis assembly, wherein the chassis assembly is provided with a mowing assembly and a driving wheel assembly and a universal wheel assembly which are arranged on the same side as the mowing assembly, and the mowing assembly is located between the driving wheel assembly and the universal wheel assembly, and an operating lever assembly is arranged on the chassis assembly, and the operating lever assembly is located on the front side of the seat assembly,

[0008] A power module is configured on the chassis assembly, the power module includes a plurality of rechargeable batteries, and the power module is electrically connected to the bidirectional motor.

[0009] an internal combustion engine, the internal combustion engine being arranged on one side of the battery module,

[0010] The mowing assembly includes at least one cutter head, which is connected to a driving device via a connecting piece, and the driving device is connected to an output end of the bidirectional motor and / or an output end of the internal combustion engine via a transmission belt. The riding lawn mower operates in different working modes based on the drive of the output end of the bidirectional motor and / or the output end of the internal combustion engine.

[0011] In one embodiment, the mowing assembly comprises: a housing, a first blade head and a second blade head located in a cavity of the housing, and a grass discharge cover is disposed on one side of the housing.

[0012] The first cutter head is connected to the first pulley via a first connecting member,

[0013] The second cutter head is connected to the second pulley via a second connecting member,

[0014] A first belt is sleeved on the first pulley and the second pulley, and the belt is connected to the output end of the bidirectional motor and / or the output end of the internal combustion engine.

[0015] The belt is driven to rotate based on the rotation of the output end of the bidirectional motor and / or the output end of the internal combustion engine, thereby driving the first cutter head and the second cutter head to rotate.

[0016] In one embodiment, the internal combustion engine comprises: an output shaft connected to a one-way clutch, the one-way clutch connected to an internal combustion engine pulley,

[0017] The bidirectional motor includes an output shaft, and the output shaft is connected to the motor pulley and the mowing clutch.

[0018] The internal combustion engine pulley and the motor pulley are sleeved with a second belt.

[0019] The mowing clutch is provided with a mowing pulley, and the mowing pulley is connected to the first pulley and the second pulley of the mowing assembly respectively through a first belt.

[0020] The driving of the first belt drives the first pulley and the second pulley to rotate, thereby driving the connected first cutter head and the second cutter head to rotate to cut grass.

[0021] In one embodiment, the first pulley and the second pulley are respectively provided with tensioning wheels.

[0022] In one embodiment, a tensioning wheel assembly is provided on the second belt.

[0023] In one embodiment, the riding lawn mower further comprises: an instrument monitoring console, wherein the instrument monitoring console is disposed on one side of the seat assembly, and the instrument monitoring console is electrically connected to the vehicle controller.

[0024] In one embodiment, the vehicle controller is configured in a battery module.

[0025] In one embodiment, the vehicle controller is configured with a wireless module, and the system software is upgraded online through the wireless module.

[0026] In one embodiment, the riding lawn mower further includes: a charger, which is arranged on the chassis assembly, arranged on the second drive motor controller side, and electrically connected to a socket arranged on one side end of the chassis assembly.

[0027] Beneficial Effects

[0028] Compared with the prior art, the lawn mower proposed in the present application can meet the needs of high power in multiple working conditions and long working hours, and has convenient energy replenishment, convenient safety and maintenance, good inheritance, improved efficiency and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the three-dimensional structure of a riding lawn mower according to an embodiment of the present application;

[0030] Figure 2 is a bottom view schematic diagram of a riding lawn mower according to an embodiment of the present application;

[0031] Figure 3 is an electrical arrangement diagram on a chassis assembly of a riding lawn mower according to an embodiment of the present application;

[0032] Figure 4 is a schematic structural diagram of a power module of a riding lawn mower according to an embodiment of the present application;

[0033] Figure 5 is a schematic structural diagram of a driving mowing assembly according to an embodiment of the present application;

[0034] Figure 6 Schematic diagram of the functional modules of the riding lawn mower according to the embodiment of the present application. DETAILED DESCRIPTION

[0035] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted as the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0036] A hybrid riding lawn mower, the riding lawn mower comprises: a chassis assembly, a mowing assembly and a driving wheel assembly and a universal wheel assembly arranged on the same side as the mowing assembly, a seat assembly arranged on the chassis assembly, an operating lever assembly arranged on the front side of the seat assembly, an instrument monitoring console arranged on one side of the seat assembly, a battery module arranged under the seat assembly, and an internal combustion engine arranged on the rear side of the seat assembly. The operating lever assembly comprises a left / right operating lever, which are respectively connected to matching drive motors, so that the left / right operating levers are manipulated to control the left and right drive motors, parallel pushing can ensure straight-line driving, and cross pushing can achieve drive differential steering, and the turning radius is extremely small (referred to as zero steering in the industry). The riding lawn mower of this embodiment has its riding zero steering, zero emission, high efficiency, maneuverability and flexibility, and comfortable operation. In addition to the ride-on zero-turn function, the lawn mower of this embodiment uses a vehicle-mounted lithium-ion power battery as a driving energy source. During operation, the electric energy stored in the power battery is used preferentially. Based on a preset control strategy, the switching of the two-way motor power generation and the electric function is controlled. When power generation is required, the lithium battery is charged again under the drive of a small gasoline engine. In this way, the lawn mower can operate in different working modes (pure electric motor mowing, gasoline engine mowing, power generation mowing, dual-power mowing with a combination of pure electric and gasoline engines). The system is comparable in terms of cost, range of function selection, safety, cheapness, convenience, etc.: it can meet the needs of high power in multiple working conditions and the needs of long working hours, and it is convenient for energy replenishment, safety and maintenance, good inheritance, improved efficiency, and energy saving.

[0037] Next, combine Figure 1-6 To describe the hybrid riding lawn mower proposed in this application.

[0038] The riding lawn mower 100 includes: a chassis assembly 110, a mowing assembly 120 and a driving wheel assembly 130 and a universal wheel assembly 130a disposed on the same side as the mowing assembly 120 are disposed below the chassis assembly 110, a seat assembly 160 is disposed on the chassis assembly 110, an operating lever assembly 140 is disposed on the front side of the seat assembly 160, and an instrument monitoring console 140a is disposed on one side of the seat assembly 160. A battery module 170 is disposed under the seat assembly 160, and an internal combustion engine 150 is disposed on the rear side of the seat assembly 160. The operating lever assembly 140 includes left / right control levers, which are respectively connected to matching drive motors, so that the left / right control levers are controlled to control the left and right drive motors, parallel pushing can ensure straight-line driving, and cross pushing can achieve drive differential steering, and the turning radius is extremely small (referred to as zero steering in the industry). In this embodiment, the lawn mower is operated by the operating lever assembly 140. In other embodiments, automatic driving can be achieved based on the operation of the instrument monitoring console 140a (based on sensors and / or radar cameras configured on the riding lawn mower, not shown).

[0039] The mowing assembly 120 includes a housing 121, a first blade head 122 and a second blade head 123 located in a cavity of the housing, and a grass discharge cover 124 is disposed on one side of the housing 121 for discharging grass cut by the mowing assembly.

[0040] The driving wheel assembly 130 includes a first driving wheel 131 and a second driving wheel 132, which are respectively connected to a driving shaft (not shown), and driven by a driving motor to drive the first driving wheel 131 and the second driving wheel 132. The first driving wheel 131 and the second driving wheel 132 are coaxially arranged. The universal wheel assembly 130a includes: a third driving wheel 133 and a fourth driving wheel 134, and the mowing assembly 120 is located between the driving wheel assembly 130 and the universal wheel assembly 130a.

[0041] The power module 170 (see Figure 4 ), including: a shell 171, in which a plurality of regularly connected battery cells 172 are arranged, the electrically connected negative terminal is led out through the negative contactor 173, and the positive terminal is led out through the positive contactor 179. A vehicle controller 174 is arranged in the shell 171, and the vehicle controller 174 is electrically connected to the battery management system 175. A shunt 176, a pre-charge group 177 and a quick-dissolving fuse 178 are arranged in the shell 171. In one embodiment, the vehicle controller 174 and the battery management system 175 are integrated on a PCB board and inside the shell 171. In one embodiment, the vehicle controller 174 is pre-configured with a wireless module, through which the system software is upgraded online (OTA upgrade).

[0042] Next, combine Figure 5 To describe the action of the mowing assembly 120, the output shaft 151c of the internal combustion engine 151 is connected to the one-way clutch 154, the one-way clutch 154 is connected to the internal combustion engine pulley, and it is connected to the motor pulley through the belt 155, the output shaft 152a of the bidirectional motor 152 is connected to the mowing clutch 157, and the motor pulley is connected to the output shaft 151c of the internal combustion engine 151 through the one-way clutch 154, so as to ensure the power output of the internal combustion engine; the clutch 157 is provided with a mowing pulley, which is respectively connected to the first pulley 127 and the second pulley 128 of the mowing disk through the belt 125, and the first pulley 127 and the second pulley 128 are respectively provided with a tensioning wheel 127. The drive based on the belt 125 drives the first pulley 127 and the second pulley 128 to rotate, thereby driving the connected first cutter head 122 and the second cutter head 123 to rotate, so as to cut grass. The belt 155 is provided with a tensioning wheel assembly 155a. The controller 152a of the bidirectional motor 152 is electrically connected to the vehicle controller 174 and performs information exchange based on the communication protocol. In this embodiment, two cutter heads are used, and in other embodiments, one cutter head may be used.

[0043] In one embodiment, in combination Figure 3 and Figure 1 To describe the electrical distribution of the lawn mower, the chassis assembly 110 is provided with a power module 170, one side of which is provided with a high and low voltage distribution box 190 and an auxiliary power supply 170a (the auxiliary power supply 170a is used to start the internal combustion engine), a first drive motor controller 153a for controlling the first drive wheel 131 and a second drive motor controller 153b for controlling the second drive wheel 132, a charger 180, which is arranged on the side of the second drive motor controller 153b, and the charger 180 is electrically connected to a socket 181 of an external AC power supply, and the socket 181 is arranged on one side end of the chassis assembly 110 (such as the rear side, the end of the chassis assembly 110 close to the internal combustion engine side).

[0044] Next, combine Figure 6 and Figure 2 To describe the action of the mowing part, the vehicle controller of the lawn mower is electrically connected to the instrument monitoring console, the first drive motor of the first drive wheel, the second drive motor of the second drive wheel, the battery management system and the bidirectional motor. Through the input of the instrument monitoring console (such as display instructions, such as: displaying the working status of the controller, current, voltage, temperature, number of revolutions of the drive / mowing motor and other parameters and alarm information), the vehicle controller receives and responds to the instruction and feeds back the corresponding information to the instrument monitoring console. The vehicle controller is electrically connected to the operating lever assembly, receives and responds to the operating instructions of the operating lever assembly to control the lawn mower. In one embodiment, when the vehicle controller detects that the battery is low on power, it starts the bidirectional motor to generate electricity and charge the power battery. The riding lawn mower proposed in this application can operate in a variety of working modes, such as gasoline engine mowing mode, dual power (internal combustion engine and battery combination) coupled mowing mode, power generation mowing mode, pure electric mowing mode, walking power generation mode, and stationary power generation mode, based on a preset control mode, which reduces the use cost, improves efficiency, provides users with more information, and provides safety and convenience of use and maintenance. Compared with the solution with lithium-ion batteries and range extenders, the control strategy is simplified. The implementation method of adding a partial lithium-ion battery and a range extender requires an additional generator set, so that the machine is equipped with five motors plus a gasoline engine, which makes the drive system and control system more complicated, wastes resources and has high costs, and is not easy to manufacture and use.

[0045] In this application, the directions or positional relationships indicated by the terms "upper", "lower", "inner", "middle", etc. are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0046] The above embodiments are only for illustrating the technical concept and features of the present application, and their purpose is to enable people familiar with the technology to understand the content of the present application and implement it accordingly, and they cannot be used to limit the protection scope of the present application. Any equivalent transformation or modification made according to the spirit of the present application shall be included in the protection scope of the present application.

Claims

1. A hybrid riding lawn mower, characterized in that: include: A chassis assembly, wherein the chassis assembly is provided with a mowing assembly and a driving wheel assembly and a universal wheel assembly which are arranged on the same side as the mowing assembly, and the mowing assembly is located between the driving wheel assembly and the universal wheel assembly, and an operating lever assembly is arranged on the chassis assembly, and the operating lever assembly is located on the front side of the seat assembly, A power module, the power module is configured on the chassis assembly, the power module includes a plurality of rechargeable battery modules, the power module is electrically connected to the bidirectional motor, an internal combustion engine, the internal combustion engine being arranged on one side of the battery module, The mowing assembly comprises at least one cutter head, the cutter head is connected to a driving device via a connecting member, and the driving device is connected to an output end of the bidirectional motor and / or an output end of the internal combustion engine via a transmission belt. The mowing assembly comprises: a shell, a first blade head and a second blade head located in a cavity of the shell, and a grass discharge cover is disposed on one side of the shell. The first cutter head is connected to the first pulley via a first connecting member, The second cutter head is connected to the second pulley via a second connecting member, A first belt is sleeved on the first pulley and the second pulley, and the belt is connected to the output end of the bidirectional motor and / or the output end of the internal combustion engine. Based on the rotation of the output end of the bidirectional motor and / or the output end of the internal combustion engine, the belt is driven to rotate and then the first cutter head and the second cutter head are driven to rotate. The internal combustion engine comprises: an output shaft connected to a one-way clutch, the one-way clutch connected to an internal combustion engine pulley, The bidirectional motor includes an output shaft, and the output shaft is connected to the motor pulley and the mowing clutch. The internal combustion engine pulley and the motor pulley are sleeved with a second belt. The mowing clutch is provided with a mowing pulley, and the mowing pulley is connected to the first pulley and the second pulley of the mowing assembly respectively through a first belt. The driving of the first belt drives the first pulley and the second pulley to rotate, thereby driving the connected first cutter head and the second cutter head to rotate to cut grass.

2. The hybrid riding lawn mower according to claim 1, characterized in that: The first belt pulley and the second belt pulley are respectively provided with tensioning wheels.

3. The hybrid riding lawn mower according to claim 1, characterized in that: The second belt is provided with a tensioning wheel assembly.

4. The hybrid riding lawn mower according to claim 1, characterized in that: Also includes: An instrument monitoring control console is arranged on one side of the seat assembly and is electrically connected to a vehicle controller.

5. The hybrid riding lawn mower according to claim 4, characterized in that: The vehicle controller is configured in the battery module.

6. The hybrid riding lawn mower according to claim 4, characterized in that: The vehicle controller is equipped with a wireless module, through which the system software is upgraded online.

7. The hybrid riding lawn mower according to claim 1, characterized in that: Also includes: A charger, the charger is arranged on the chassis assembly, the charger is arranged on the second drive motor controller side, and the charger is electrically connected to a socket arranged on one side end of the chassis assembly.

8. The hybrid riding lawn mower according to claim 1, characterized in that: The riding lawn mower operates in different operating modes based on the driving of the output end of the bidirectional motor and / or the output end of the internal combustion engine.

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