Tractor

Abstract

The utility model relates to the field of tractors, and discloses a tractor which comprises an engine assembly, an engine heat dissipation water channel, an engine water inlet and an engine water outlet, and the engine water inlet and the engine water outlet are communicated with the engine heat dissipation water channel. The radiator assembly comprises an engine radiator internally provided with a first radiating water tank, and the first radiating water tank is provided with a first water tank water inlet pipe connected with an engine water outlet and a first water tank water outlet pipe connected with an engine water inlet; the water temperature sensor is used for detecting the water inlet temperature of the first heat dissipation water tank; the electronic fan is used for dissipating heat of the radiator assembly and comprises a fan body and a fan controller, and the fan controller is electrically connected with the water temperature sensor and the fan body and can adjust the rotating speed of the fan body according to the water inlet temperature of the first heat dissipation water tank. According to the tractor, control over the fan can be optimized, and a heat dissipation system of the tractor is more intelligent and saves more energy.

Description

Technical Field

[0001] This application belongs to the technical field of tractors, and particularly relates to a tractor. Background Art

[0002] Tractors are usually equipped with a fan to dissipate heat from the radiator in the body. Currently, it is relatively common to directly connect the fan to the engine and use the engine to drive the fan to operate. In addition, some manufacturers will install the fan on a hydraulic motor, and control the operation of the hydraulic pump through the vehicle controller, and the hydraulic pump can drive the hydraulic motor to drive the fan to operate.

[0003] However, in the case of the engine driving the fan, the fan speed is constant and cannot be turned off. When the heat generated by the radiator is not too high or the external temperature is low and there is no need to turn on the fan or use a faster wind speed, it will cause waste of energy. In the case of the hydraulic system driving the fan, based on the transmission characteristics of the hydraulic system, the response speed when starting, stopping or controlling the fan speed is slow, and the accuracy is poor. Summary of the Utility Model

[0004] The purpose of this application is to provide a tractor that can optimize the control of the fan and make the heat dissipation system of the tractor more intelligent and energy-saving.

[0005] To achieve the above purpose, this application provides a tractor, which includes:

[0006] An engine assembly, including an engine cooling water circuit, an engine water inlet and an engine water outlet that are respectively connected to the engine cooling water circuit;

[0007] A radiator assembly, including an engine radiator with a first radiator water tank inside, the first radiator water tank is provided with a first water tank inlet pipe connected to the engine water outlet and a first water tank outlet pipe connected to the engine water inlet;

[0008] A water temperature sensor for detecting the inlet water temperature of the first radiator water tank; and

[0009] An electric fan for dissipating heat from the radiator assembly, and including a fan body and a fan controller, the fan controller is electrically connected to the water temperature sensor and the fan body, and can adjust the rotation speed of the fan body according to the inlet water temperature of the first radiator water tank.

[0010] In some embodiments, the tractor further includes a generator driven by the engine assembly, a plurality of traveling drive motors powered by the generator, and a plurality of motor controllers respectively configured to control the plurality of traveling drive motors. The radiator assembly further includes a motor and electronic control radiator capable of dissipating heat from the generator, the plurality of traveling drive motors, and the plurality of motor controllers. The motor and electronic control radiator is integrally provided with the engine radiator.

[0011] In some embodiments, the electric fan is electrically connected to the generator to be powered by the generator for operation; and / or, the tractor further includes a power battery capable of powering the electric fan.

[0012] In some embodiments, the tractor further includes a vehicle controller electrically connected to the fan body and capable of controlling the start and stop of the fan body.

[0013] In some embodiments, the air inlet end of the electric fan faces the radiator assembly.

[0014] In some embodiments, the tractor further includes a wind deflector. The wind deflector is provided with a wind deflector air inlet and a wind deflector air outlet. The wind deflector air inlet faces the radiator assembly, and the electric fan is disposed within the wind deflector.

[0015] In some embodiments, the wind deflector is fixedly connected to the engine radiator.

[0016] In some embodiments, the tractor further includes a cab. The engine assembly is arranged below the cab, and the radiator assembly is arranged behind the cab.

[0017] In some embodiments, the electric fan is arranged behind the radiator assembly.

[0018] In some embodiments, the tractor further includes a frame assembly located below the cab, and the engine assembly is mounted on the frame assembly;

[0019] and / or, the tractor further includes a mudguard mounting bracket located behind the cab, and the radiator assembly is mounted on the mudguard mounting bracket.

[0020] In the present application, the fan body of the electric fan does not need to be driven by an engine or a hydraulic system. The start / stop and rotational speed of the fan body are not restricted by the engine. Therefore, the fan body can be started / stopped at any time and its speed can be adjusted. In addition, the fan controller of the electric fan can obtain the inlet water temperature of the first radiator tank of the engine radiator from the water temperature sensor, and adjust the rotational speed of the fan body in real time according to this inlet water temperature. This way of electronically controlling and adjusting the fan speed according to the temperature has a relatively fast response speed, high control accuracy, and higher intelligence and energy-saving effects compared with the prior art.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. They are used together with the following specific embodiments to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0023] Figure 1 is a schematic diagram of a tractor in a specific embodiment of the present application;

[0024] Figure 2 is Figure 1 a partial schematic diagram of the tractor in

[0025] Figure 3 is Figure 1 another partial schematic diagram of the tractor in

[0026] Figure 4 is Figure 1 a schematic diagram of the radiator assembly, electric fan and air guide cover in

[0027] DESCRIPTION OF THE REFERENCE NUMERALS

[0028] 1 engine assembly 2 frame assembly

[0029] 3 fender mounting bracket 4 radiator assembly

[0030] 5 driver's cab 6 water pump

[0031] 7 water temperature sensor 8 thermostat

[0032] 9 first water tank inlet pipe 10 engine radiator

[0033] 11 first water tank outlet pipe 12 first electric water pump

[0034] 13 first motor 14 second motor

[0035] 15 Second electronic water pump 16 Generator

[0036] 17 Third motor 18 First motor controller

[0037] 19 Second water tank outlet pipe 20 Second water tank inlet pipe

[0038] 21 Second motor controller 22 Motor electronic control radiator

[0039] 23 Air guide cover 24 Electronic fan Specific embodiments

[0040] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present application, and are not intended to limit the present application.

[0041] Referring to Figures 1 to 4 , the present application provides a tractor, which includes:

[0042] An engine assembly 1, including an engine cooling water circuit and an engine water inlet and an engine water outlet respectively communicating with the engine cooling water circuit;

[0043] A radiator assembly 4, including an engine radiator 10 provided with a first water tank inside, the first water tank is provided with a first water tank inlet pipe 9 connected to the engine water outlet and a first water tank outlet pipe 11 connected to the engine water inlet;

[0044] A water temperature sensor 7 for detecting the inlet temperature of the first water tank; and

[0045] An electronic fan 24 for cooling the radiator assembly 4, and including a fan body and a fan controller, the fan controller is electrically connected to the water temperature sensor 7 and the fan body, and can adjust the rotation speed of the fan body according to the inlet temperature of the first water tank.

[0046] It should be noted that when using the engine radiator 10 to cool the engine assembly 1, the refrigerant in the engine cooling water circuit flows into the engine radiator 10 through the engine water outlet and the first water tank inlet pipe 9 after absorbing the heat generated by the engine assembly 1 for heat exchange and cooling, and the cooled refrigerant flows back into the engine cooling water circuit through the first water tank outlet pipe 11 and the engine water inlet, so as to absorb the heat generated by the engine assembly 1 again. In this way, the engine radiator 10 can continuously cool the engine assembly 1.

[0047] In addition, the water temperature sensor 7 can be set at the engine water outlet, or can be set in the first water tank inlet pipe 9, or can also be set at other positions capable of detecting the inlet temperature of the first water tank, and the present application does not limit this.

[0048] With the above arrangement of the present application, the fan body of the electric fan 24 does not need to be driven by an engine or a hydraulic system. The start / stop and speed of the fan body are not restricted by the engine. Therefore, the fan body can be started / stopped and speed-regulated at any time. In addition, the fan controller of the electric fan 24 can obtain the inlet temperature of the first heat dissipation water tank of the engine radiator 10 from the water temperature sensor 7, and adjust the speed of the fan body in real time according to the inlet temperature. This way of electronically controlling and adjusting the fan speed according to the temperature has a relatively fast response speed, high control accuracy, and higher intelligence and energy-saving effects compared with the prior art.

[0049] In some embodiments, the radiator assembly 4 further includes a water pump 6 and a thermostat 8. Among them, the inlet of the thermostat 8 is connected to the engine outlet, the low-temperature conduction outlet of the thermostat is connected to the engine inlet through the water pump 6, the high-temperature conduction outlet of the thermostat 8 is connected to the engine radiator 10 through the first water tank inlet pipe 9, and the first water tank outlet pipe 11 is connected to the engine inlet through the water pump 6.

[0050] When the water temperature at the engine outlet is lower than the opening temperature of the thermostat 8, the high-temperature conduction outlet of the thermostat 8 is closed and the low-temperature conduction outlet is opened. Thus, at this time, the engine heat dissipation water path, the thermostat 8, the water pump 6, and some connecting pipes together form a small-circulation heat dissipation water path. At this time, the engine radiator 10 does not dissipate heat from the engine assembly 1, and the engine assembly 1 dissipates heat through its own engine heat dissipation water path.

[0051] When the water temperature at the engine outlet is not lower than the opening temperature of the thermostat 8, the high-temperature conduction outlet of the thermostat 8 is opened. At this time, the water path in the first heat dissipation water tank of the engine radiator 10 is connected to the engine heat dissipation water path, so as to realize the heat dissipation of the engine radiator 10 to the engine assembly 1.

[0052] In some embodiments, the tractor further includes a generator 16 driven by the engine assembly 1, a plurality of traveling drive motors powered by the generator 16, and a plurality of motor controllers respectively used to control the plurality of traveling drive motors. In other words, the tractor in this embodiment is a hybrid tractor. In order to dissipate heat from the generator 16, the plurality of traveling drive motors, and the plurality of motor controllers, a motor electronic control radiator 22 can also be provided in the radiator assembly 4, and the motor electronic control radiator 22 can be integrally arranged with the engine radiator 10, so as to improve the structural compactness of the radiator assembly 4 and save installation space.

[0053] In some embodiments, the multiple traveling drive motors include a first motor 13, a second motor 14, a third motor 17, and a fourth motor (not shown in the figure) respectively for driving four wheels. The multiple motor controllers include a first motor controller 18 for controlling the third motor 17 and the fourth motor, and a second motor controller 21 for controlling the first motor 13 and the second motor 14.

[0054] In addition, a second water tank is provided inside the motor electronic control radiator 22, and the second water tank is provided with a second water tank outlet pipe 19 and a second water tank inlet pipe 20. The radiator assembly 4 may further include a first electronic water pump 12 and a second electronic water pump 15.

[0055] The motor electronic control radiator 22 is connected to the first electronic water pump 12, the second electronic water pump 15, the first motor 13, the second motor 14, the third motor 17, the generator 16, the first motor controller 18, and the second motor controller 21 through the second water tank outlet pipe 19 and the second water tank inlet pipe 20. The vehicle controller can adjust the rotational speeds of the first electronic water pump 12 and the second electronic water pump 15 by obtaining the temperatures of the generator 16, the multiple traveling drive motors, and the multiple motor controllers. When the electronic water pumps work, they can drive the water flow to flow to each component that needs to be cooled, thereby taking away the heat.

[0056] In some embodiments, the electronic fan 24 can be electrically connected to the generator 16, and the generator 16 is used to supply power to the electronic fan 24. Of course, a power battery can also be provided in the tractor (either a hybrid tractor or a non - hybrid tractor), and the power battery is used to supply power to the electronic fan 24.

[0057] In some embodiments, the tractor further includes a vehicle controller that is electrically connected to the fan body and can control the start and stop of the fan body. In this way, it is beneficial to further improve the intelligence of the fan control and adapt to the current intelligent trend of tractors.

[0058] In some embodiments, the air inlet end of the electronic fan 24 is arranged facing the radiator assembly 4, so that the heat of the radiator assembly 4 will not accumulate between the radiator assembly 4 and the electronic fan 24, and the heat can be discharged to the outside by the electronic fan 24 more quickly.

[0059] In some embodiments, the tractor may further include a wind guide cover 23. The wind guide cover 23 is provided with a wind guide cover air inlet and a wind guide cover air outlet, and the wind guide cover air inlet is arranged facing the radiator assembly 4, and the electronic fan 24 is arranged inside the wind guide cover 23. When the electronic fan 24 operates, the heat of the radiator assembly 4 enters the wind guide cover 23 through the wind guide cover air inlet, and is discharged to the external environment from the wind guide cover air outlet under the guiding action of the wind guide cover 23, realizing the directional discharge of heat, which is beneficial to improving the heat dissipation efficiency and heat dissipation effect.

[0060] In some embodiments, the air guide cover 23 is fixedly connected (e.g., welded) to the engine radiator 10, thereby saving additional components for fixing the air guide cover 23, improving the structural compactness, and saving costs and space. In addition, when the motor and electronic control radiator 22 and the engine radiator 10 are also integrally arranged, the motor and electronic control radiator 22, the engine radiator 10, and the air guide cover 23 can be arranged in an integrated manner in sequence from front to back.

[0061] In some embodiments, the tractor further includes a driver's cab 5. The engine assembly 1 is arranged below the driver's cab 5, and the radiator assembly 4 is arranged behind the driver's cab 5. This layout structure makes the overall structure of the tractor compact, with a shorter overall length and a lower height, and a larger space utilization rate of the whole vehicle.

[0062] In contrast, existing tractors in hilly and mountainous areas (such as tractors with a wheel-track hybrid chassis) are mainly used in forest orchards (such as citrus, pomelo, and oil tea orchards, etc.). Limited by the operating scenarios, such tractors generally require to be as small as possible, and there are relatively high requirements for their overall dimensions. However, at present, the radiators in such tractors are generally fixed on the front bracket and located in front of the engine, resulting in a longer overall length of the vehicle, and there is still a certain gap from the expected miniaturization goal.

[0063] In this embodiment, by arranging the engine assembly 1 below the driver's cab 5 and arranging the radiator assembly 4 behind the driver's cab 5, compared with the existing tractors in hilly and mountainous areas, the overall length of the vehicle is shorter, the height is lower, the turning radius during field operations is smaller, and the space utilization rate is larger. Therefore, it better meets the requirements of vehicle miniaturization and is especially suitable for forest orchard operations in hilly and mountainous areas.

[0064] In some embodiments, when the radiator assembly 4 is arranged behind the driver's cab 5, the electronic fan 24 can be arranged behind the radiator assembly 4. In this way, it can ensure that the radiator assembly 4 and the electronic fan 24 are arranged closely, thereby ensuring the heat dissipation effect of the electronic fan 24 on the radiator assembly 4.

[0065] In some embodiments, since there is a frame assembly 2 below the driver's cab 5 of the tractor, the engine assembly 1 can be installed by using the frame assembly 2 so that the engine assembly 1 is below the driver's cab 5. For example, the engine assembly 1 can be fixed to the frame assembly 2 by different fixing methods such as bolts.

[0066] In some embodiments, the tractor further includes a fender mounting bracket 3 located behind the driver's cab 5. The fender mounting bracket 3 is used to mount the fenders. When the radiator assembly 4 is arranged behind the driver's cab 5, the radiator assembly 4 can also be mounted on the fender mounting bracket 3, so that there is no need to set up special components to mount the radiator assembly 4, saving costs and space. For example, the radiator assembly 4 can be fixed to the fender mounting bracket 3 by different fixing methods such as bolts.

[0067] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0068] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0069] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A tractor, characterized in that, Comprising: An engine assembly (1), including an engine cooling water circuit, an engine water inlet and an engine water outlet that are respectively communicated with the engine cooling water circuit; A radiator assembly (4), including an engine radiator (10) provided with a first radiator water tank inside, the first radiator water tank being provided with a first water tank inlet pipe (9) connected to the engine water outlet and a first water tank outlet pipe (11) connected to the engine water inlet; A water temperature sensor (7) for detecting the inlet water temperature of the first radiator water tank; and An electric fan (24) for dissipating heat from the radiator assembly (4), and including a fan body and a fan controller, the fan controller being electrically connected to the water temperature sensor (7) and the fan body, and capable of adjusting the rotation speed of the fan body according to the inlet water temperature of the first radiator water tank; A vehicle controller, electrically connected to the fan body and capable of controlling the start and stop of the fan body; A generator (16), a plurality of traveling drive motors driven by the engine assembly (1) and powered by the generator (16), and a plurality of motor controllers respectively used for controlling the plurality of traveling drive motors, the radiator assembly (4) further including a motor and electronic control radiator (22) capable of dissipating heat from the generator (16), the plurality of traveling drive motors and the plurality of motor controllers, the motor and electronic control radiator (22) being integrally provided with the engine radiator (10); The electric fan (24) is electrically connected to the generator (16) to be powered by the generator (16) for operation; and / or, the tractor further includes a power battery capable of supplying power to the electric fan (24).

2. The tractor according to claim 1, characterized in that, The air inlet end of the electric fan (24) is arranged towards the radiator assembly (4).

3. The tractor according to claim 2, wherein The tractor further includes a wind deflector (23), the wind deflector (23) being provided with a wind deflector air inlet and a wind deflector air outlet, the wind deflector air inlet being arranged towards the radiator assembly (4), and the electric fan (24) being arranged inside the wind deflector (23).

4. The tractor according to claim 3, characterized in that, The wind deflector (23) is fixedly connected to the engine radiator (10).

5. The tractor according to any one of claims 1 to 4, characterized in that, The tractor further includes a driver's cab (5), the engine assembly (1) being arranged below the driver's cab (5), and the radiator assembly (4) being arranged behind the driver's cab (5).

6. The tractor according to claim 5, characterized in that, The electric fan (24) is arranged behind the radiator assembly (4).

7. The tractor according to claim 6, characterized in that, The tractor further includes a frame assembly (2) located below the driver's cab (5), the engine assembly (1) being mounted on the frame assembly (2); and / or, the tractor further includes a mudguard mounting bracket (3) located behind the driver's cab (5), the radiator assembly (4) being mounted on the mudguard mounting bracket (3).

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