Tractor with widened front view

Abstract

The utility model discloses a tractor with a broadened front view, which comprises an electronic control unit, a radiator, an engine, a combined fan and a fan control unit, the combined fan comprises a small mechanical fan or a silicone oil clutch fan and two electronic fans, and the small mechanical fan or the silicone oil clutch fan is connected with an engine crankshaft. The small mechanical fan or the silicone oil clutch fan is arranged opposite to the upper half part of the radiator, and the two electronic fans are arranged opposite to the lower half part of the radiator; the fan control unit comprises a switching circuit and a storage battery, and the electronic control unit controls the switching circuit to be connected or disconnected so as to control starting and stopping of the electronic fan. The combined fan can reduce the mounting height of the radiator, so that the height of the hood is reduced, the front view of the tractor is increased by about 2mm, and the driving safety is improved; as the electronic fan is controlled by the electronic control unit to start and stop, large engine current does not need to be consumed; therefore, the utility model has the advantages of wide front view and energy conservation.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a tractor with a widened front field of view. Background Art

[0002] The field of vision of the tractor is very important for the safety of tractor operation, especially the front field of vision of the tractor. The better the front field of vision of the tractor, the clearer the driver can see the road conditions of the working field. It is a very important indicator in the evaluation of tractor performance.

[0003] However, when tractor structure is arranged, the engine and vehicle radiator are often arranged at the front end of the tractor, such as Figure 2 As shown, the original mechanical fan 3 is connected to the engine crankshaft, and a radiator 4 is arranged at the front end of the original mechanical fan 3. In order to increase the heat dissipation capacity of the radiator 4, the center of the original mechanical fan 3 is usually aligned with the center of the radiator 4, which leads to the installation height of the radiator 4 ( Figure 2 The upper edge of the tractor (shown in d3) is relatively high, which blocks the tractor's front view and becomes the main factor limiting the tractor's field of view.

[0004] At present, some tractors use electronic fans to supply air to the radiator to increase the heat dissipation, which can solve the problem of the original mechanical fan being connected to the engine crankshaft and the engine crankshaft height limiting the installation height of the radiator. However, the maximum speed of the electronic fan is lower than the maximum speed of the mechanical fan (constrained by the strength of the electronic fan plastic fan blades and the capacity of the electronic fan motor). In order to make up for the defect of the small air volume of the electronic fan, the number of matching electronic fans often needs to reach more than 6. Finally, the electronic fan cannot be arranged within the original size of the radiator, or the electronic fan is arranged, but the space occupied by the electronic fan is much higher than the original mechanical fan, thereby increasing the height of the radiator, making it impossible to implement the radiator height reduction plan. In addition, the 6 electronic fans need to consume a large engine current, and the whole machine needs to be equipped with a high-power generator of more than 3KW, and a separate battery power supply system needs to be configured. The price of the generator above 3KW and the large-capacity battery is more than 5 times that of the ordinary configuration, and the electronic fan needs to be equipped with a separate controller, and the controller cost is very high. All of the above have greatly increased the cost of the tractor. Utility Model Content

[0005] In view of the above-mentioned shortcomings, the technical problem to be solved by the utility model is to provide a tractor with a wide front field of view and energy saving.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A tractor with a widened front field of view comprises an electronic control unit, a radiator and an engine, wherein the radiator and the engine are arranged front and rear, and the tractor further comprises a combined fan and a fan control unit; the combined fan is arranged between the radiator and the engine, and comprises a small mechanical fan and two electronic fans, the small mechanical fan is connected to the engine crankshaft, and the small mechanical fan is arranged opposite to the upper part of the radiator, and the two electronic fans are arranged opposite to the lower part of the radiator; the fan control unit comprises an electrically connected switch circuit and a battery, the switch circuit is also electrically connected to the electronic control unit and the two electronic fans respectively, and the electronic control unit controls the switch circuit to be turned on or off, so as to turn on or off the battery and the two electronic fans.

[0008] Preferably, the fan control unit also includes a temperature detection unit, which is electrically connected to the electronic control unit. The temperature detection unit detects the coolant temperature and transmits a corresponding temperature signal to the electronic control unit. The electronic control unit controls the switching circuit to be turned on and off according to the temperature signal.

[0009] Preferably, the switch circuit includes a relay.

[0010] Preferably, the center line of the small mechanical fan is arranged to coincide with the center line of the upper part of the radiator.

[0011] Preferably, the two electronic fans are arranged horizontally side by side.

[0012] A tractor with a widened front field of view comprises an electronic control unit, a radiator and an engine, wherein the radiator and the engine are arranged front and rear, and the tractor further comprises a combined fan and a fan control unit; the combined fan is arranged between the radiator and the engine, and comprises a silicone oil clutch fan and two electronic fans, the silicone oil clutch fan is connected to the engine crankshaft, and the silicone oil clutch fan is arranged opposite to the upper half of the radiator, and the two electronic fans are arranged opposite to the lower half of the radiator; the fan control unit comprises an electrically connected switch circuit and a battery, the switch circuit is also electrically connected to the electronic control unit and the two electronic fans respectively, and the electronic control unit controls the switch circuit to be turned on or off to turn on or off the battery and the two electronic fans; the clutch of the silicone oil clutch fan is electrically connected to the electronic control unit, and the electronic control unit outputs a PWM pulse signal to the clutch to control the rotation speed of the silicone oil clutch fan.

[0013] Preferably, the fan control unit also includes a temperature detection unit, which is electrically connected to the electronic control unit, and detects the coolant temperature and transmits a corresponding temperature signal to the electronic control unit; the electronic control unit controls the switching circuit to be turned on and off according to the temperature signal; the electronic control unit controls the duty cycle of the output PWM pulse signal according to the temperature signal to adjust the speed of the silicone oil clutch fan.

[0014] Preferably, the switch circuit includes a relay.

[0015] Preferably, the center line of the silicone oil clutch fan is arranged to coincide with the center line of the upper part of the radiator.

[0016] Preferably, the two electronic fans are arranged horizontally side by side.

[0017] After adopting the above technical solution, the beneficial effects of the utility model are:

[0018] The tractor with a widened front field of view of the utility model comprises an electronic control unit, a radiator, an engine, a combined fan and a fan control unit. The radiator and the engine are arranged front and rear, the combined fan is arranged between the radiator and the engine, the combined fan comprises a small mechanical fan and two electronic fans, or the combined fan comprises a silicone oil clutch fan and two electronic fans, the small mechanical fan or the silicone oil clutch fan is connected to the engine crankshaft, and the small mechanical fan or the silicone oil clutch fan is arranged opposite to the upper part of the radiator, and the two electronic fans are arranged opposite to the lower part of the radiator; the fan control unit comprises an electrically connected switch circuit and a battery, the switch circuit is also electrically connected to the electronic control unit and the two electronic fans respectively, and the electronic control unit controls the switch circuit to be turned on or off to turn on or off the battery and the two electronic fans. As can be seen from the above, the utility model uses a small mechanical fan or a silicone oil clutch fan to dissipate heat for the upper half of the radiator, and uses two electronic fans to dissipate heat for the lower half of the radiator, that is, the combined fan first ensures the heat dissipation demand of the radiator. At the same time, because the diameter of the small mechanical fan and the silicone oil clutch fan is reduced by half compared with the existing mechanical fan, the installation height of the radiator is reduced, so that the height of the hood 5 is also reduced, and finally the front field of view of the tractor is increased by about 2mm, which widens the front field of view of the whole vehicle and improves driving safety; at the same time, the electronic control unit can control the start and stop of the two electronic fans through the fan control unit, without consuming a large engine current, and realizing energy saving. Therefore, the tractor of the utility model has the advantages of wide front field of view and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram comparing the front vision of the existing tractor and the tractor of the utility model;

[0020] Figure 2 It is a structural diagram of the original mechanical fan and radiator arrangement in the existing tractor;

[0021] Figure 3 It is a structural schematic diagram of the arrangement of the combined fan and radiator in the tractor of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the combined fan in the utility model;

[0023] In the figure: 1- small mechanical fan, 2- electronic fan, 3- original mechanical fan, 4- radiator, 5- machine cover. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] Embodiment 1:

[0028] like Figure 1 , Figure 3 and Figure 4 As shown, a tractor with a widened front field of view includes an electronic control unit, a radiator 4, an engine, a combined fan and a fan control unit, wherein the radiator 4 and the engine are arranged in a hood 5 front and rear, and the combined fan is arranged between the radiator 4 and the engine.

[0029] In this embodiment, the combined fan includes a small mechanical fan 1 and two electronic fans 2. The small mechanical fan 1 is connected to the engine crankshaft, and the small mechanical fan 1 is arranged opposite to the upper part of the radiator 4, and the two electronic fans 2 are arranged opposite to the lower part of the radiator 4. In a preferred embodiment, the center line of the small mechanical fan 1 coincides with the center line of the upper part of the radiator 4; the two electronic fans 2 are arranged horizontally side by side. Specifically, the small mechanical fan 1 and the Figure 2 Compared with the original mechanical fan 3 shown in FIG, the diameter is halved.

[0030] Since the small mechanical fan 1 can dissipate heat for the upper part of the radiator 4, and the two electronic fans 2 can dissipate heat for the lower part of the radiator 4, the combined fan firstly ensures the heat dissipation demand of the radiator 4. Meanwhile, since the diameter of the small mechanical fan 1 is reduced by half compared with the original mechanical fan, the installation height of the radiator 4 is reduced when the height of the engine crankshaft remains unchanged. Figure 2 and Figure 3 As shown, Figure 2 d3 in the figure shows the installation height of the radiator 4 in the prior art. Figure 3 The installation height of the radiator 4 in this embodiment is shown in d4. Compared with the prior art, the installation height of the radiator 4 can be reduced.

[0031] The height of the hood 5 has also been lowered, which increases the tractor's front field of view by about 2 mm. Figure 1 As shown in the figure, d1 is the front field of view of the tractor in the prior art, and d2 is the front field of view of the tractor in this embodiment, and the difference between d1 and d2 is about 2 mm. It can be seen that the combined fan used in the utility model widens the front field of view of the whole vehicle, improves driving safety, and has a simple structure and is easy to implement.

[0032] The fan control unit in the utility model includes an electrically connected switch circuit and a battery. The switch circuit is also electrically connected to the electronic control unit and the two electronic fans 2 respectively. The electronic control unit controls the switch circuit to be turned on or off to turn on or off the battery and the two electronic fans 2. Specifically, the enable end of the switch circuit is electrically connected to the electronic control unit, one end of the switch circuit is electrically connected to the battery, and the other two ends of the switch circuit are electrically connected to the two electronic fans 2 respectively; in a preferred embodiment, the switch circuit includes a relay. Of course, the switch circuit is not limited to the relays listed above, and an analog switch, a digital switch, etc. can be used.

[0033] When the electronic control unit enables the switch circuit to be turned on, the battery is connected to the two electronic fans 2, that is, the two electronic fans 2 are powered on and started, and when the electronic control unit enables the switch circuit to be turned off, the battery is disconnected from the two electronic fans 2, that is, the two electronic fans 2 are powered off and stop rotating. It can be seen that the electronic fan 2 of the utility model does not need to consume a large engine current, and is directly controlled by the electronic control unit through the fan control unit, thereby achieving energy saving.

[0034] In this embodiment, the fan control unit also includes a temperature detection unit, which is electrically connected to the electronic control unit. The temperature detection unit detects the temperature of the coolant and transmits a corresponding temperature signal to the electronic control unit. The electronic control unit controls the switch circuit to be turned on and off according to the temperature signal. Specifically, the temperature detection unit includes a temperature sensor, which is used to detect the temperature of the coolant.

[0035] The start and stop control of the two electronic fans 2 can be specifically as follows: when the engine coolant temperature exceeds 96°C, the electronic control unit triggers the relay to connect the battery and the two electronic fans 2, and the electronic fans 2 are forced to start and rotate at the highest speed. When the engine coolant temperature is lower than 96°C, the electronic control unit triggers the relay to disconnect the battery and the two electronic fans 2, and the electronic fans 2 do not rotate. At the same time, when the coolant temperature exceeds 96°C and the electronic fans 2 rotate, in order to prevent the coolant temperature and the speed of the electronic fans 2 from fluctuating back and forth, the electronic fans 2 can stop rotating only after the coolant temperature drops to 90°C.

[0036] The combined fan of this embodiment can reduce the original fan function by 30%, corresponding to a 3% reduction in the fuel consumption of the engine.

[0037] Embodiment 2:

[0038] like Figure 3 and Figure 4 As shown, this embodiment is basically the same as the first embodiment, except that:

[0039] The combined fan includes an oil clutch fan and two electronic fans 2, wherein the silicone oil clutch fan is connected to the engine crankshaft, and the silicone oil clutch fan is arranged opposite to the upper part of the radiator 4. The clutch of the silicone oil clutch fan is electrically connected to the electronic control unit, and the electronic control unit outputs a PWM pulse signal to the clutch to control the speed of the silicone oil clutch fan.

[0040] In this embodiment, the electronic control unit controls the switching circuit to be turned on and off according to the temperature signal; the electronic control unit controls the duty cycle of the output PWM pulse signal according to the temperature signal to adjust the speed of the silicone oil clutch fan.

[0041] The speed of the silicone oil clutch fan is controlled by the PWM pulse signal output by the electronic control unit. The speed of the silicone oil clutch fan and the coolant temperature can be controlled according to the following table, thereby reducing the fan power consumption of the engine in the small and medium power stages.

[0042]

[0043] In the tractor of this embodiment, the combined fan can reduce the power consumption of the fan by 45%, correspondingly reducing the power consumption of the engine by 4.5%.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications made within the spirit and principles of the present invention, improvements to a tractor with an expanded front field of view, etc., should be included in the protection scope of the present invention.

Claims

1. A tractor with widened front vision, comprising an electronic control unit, a radiator and an engine, wherein the radiator and the engine are arranged front and back, and characterized in that: The tractor also includes a combined fan and a fan control unit; The combined fan is arranged between the radiator and the engine, and comprises a small mechanical fan and two electronic fans, wherein the small mechanical fan is connected to the engine crankshaft, and the small mechanical fan is arranged opposite to the upper part of the radiator, and the two electronic fans are arranged opposite to the lower part of the radiator; The fan control unit includes an electrically connected switch circuit and a battery. The switch circuit is also electrically connected to the electronic control unit and the two electronic fans respectively. The electronic control unit controls the switch circuit to be turned on or off to turn on or off the battery and the two electronic fans.

2. The tractor with widened front field of view according to claim 1, characterized in that: The fan control unit also includes a temperature detection unit, which is electrically connected to the electronic control unit. The temperature detection unit detects the coolant temperature and transmits a corresponding temperature signal to the electronic control unit. The electronic control unit controls the switching circuit to be turned on and off according to the temperature signal.

3. The tractor with widened front field of view according to claim 2, characterized in that: The switching circuit includes a relay.

4. The tractor with widened front field of view according to claim 1, characterized in that: The center line of the small mechanical fan is arranged to coincide with the center line of the upper part of the radiator.

5. The tractor with widened front field of view according to claim 1, characterized in that: The two electronic fans are arranged horizontally side by side.

6. A tractor with widened front vision, comprising an electronic control unit, a radiator and an engine, wherein the radiator and the engine are arranged front and back, and characterized in that: The tractor also includes a combined fan and a fan control unit; The combined fan is arranged between the radiator and the engine, and comprises a silicone oil clutch fan and two electronic fans, the silicone oil clutch fan is connected to the engine crankshaft, and the silicone oil clutch fan is arranged opposite to the upper part of the radiator, and the two electronic fans are arranged opposite to the lower part of the radiator; The fan control unit comprises an electrically connected switch circuit and a battery, wherein the switch circuit is also electrically connected to the electronic control unit and the two electronic fans respectively, and the electronic control unit controls the switch circuit to be turned on or off so as to turn on or off the battery and the two electronic fans; The clutch of the silicone oil clutch fan is electrically connected to the electronic control unit, and the electronic control unit outputs a PWM pulse signal to the clutch to control the rotation speed of the silicone oil clutch fan.

7. The tractor with widened front field of view according to claim 6, characterized in that: The fan control unit further comprises a temperature detection unit, the temperature detection unit is electrically connected to the electronic control unit, the temperature detection unit detects the coolant temperature and transmits a corresponding temperature signal to the electronic control unit; The electronic control unit controls the switching circuit to be turned on and off according to the temperature signal; The electronic control unit controls the duty cycle of the output PWM pulse signal according to the temperature signal to adjust the rotation speed of the silicone oil clutch fan.

8. The tractor with widened front field of view according to claim 6, characterized in that: The switching circuit includes a relay.

9. The tractor with widened front field of view according to claim 6, characterized in that: The center line of the silicone oil clutch fan is arranged to coincide with the center line of the upper part of the radiator.

10. The tractor with widened front field of view according to claim 6, characterized in that: The two electronic fans are arranged horizontally side by side.

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