CN115355287A - Positive and negative rotation transmission device of cooling fan - Google Patents

Positive and negative rotation transmission device of cooling fan Download PDF

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Publication number
CN115355287A
CN115355287A CN202210759757.3A CN202210759757A CN115355287A CN 115355287 A CN115355287 A CN 115355287A CN 202210759757 A CN202210759757 A CN 202210759757A CN 115355287 A CN115355287 A CN 115355287A
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China
Prior art keywords
preset
belt pulley
reverse rotation
movable disc
pulley
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Granted
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CN202210759757.3A
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Chinese (zh)
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CN115355287B (en
Inventor
任建华
赵军
闫传金
吴立军
马瑞新
袁明勇
王丰阳
刘正芳
唐文韬
张希升
李丽
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Jotec International Heavy Industry Qingdao Co Ltd
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Jotec International Heavy Industry Qingdao Co Ltd
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Priority to CN202210759757.3A priority Critical patent/CN115355287B/en
Publication of CN115355287A publication Critical patent/CN115355287A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements
    • F01P5/043—Pump reversing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements
    • F01P2005/046—Pump-driving arrangements with electrical pump drive

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Control Of Transmission Device (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

The invention relates to the technical field of engines, and discloses a positive and negative rotation transmission device for a cooling fan, which comprises a power output end, an intermediate shaft belt pulley, a transition belt pulley, a movable disc belt pulley, a tensioning pull rod, a motor, a speed reducer and a control device, wherein a transmission ratio sensor is arranged on the speed reducer and used for acquiring the transmission ratio of the speed reducer, a temperature sensor is arranged on the power output end and used for acquiring the temperature of a sealed cabin of an engine, an image sensor is also arranged on the power output end and used for acquiring the volume of a blockage at the cooling fan, and a time sensor is arranged on the movable disc belt pulley and used for detecting the rotation time of the movable disc belt pulley. The control device controls the power output end and the tension pull rod, and the forward and reverse switching time interval, the forward and reverse time and the rotating speed of the movable disc belt pulley can be well set according to the actual working state of the transmission device, so that the stability of the device is effectively improved, and the waste of resources is avoided.

Description

Positive and negative rotation transmission device of cooling fan
Technical Field
The invention relates to the technical field of engines, in particular to a positive and negative rotation transmission device of a cooling fan.
Background
With the continuous improvement of the agricultural level in China, the harvesting of crops is basically carried out by using a harvester, the harvester is an integrated crop harvesting machine, the harvesting and the threshing are completed at one time, grains are collected to a storage bin, then the grains are conveyed to a transport vehicle through a conveying belt, the grains can also be harvested manually, straws of the crops such as rice, wheat and the like are laid in the field, and then the grains are picked up and threshed by using a grain harvesting machine. A crop harvesting machine for harvesting grain crop seeds and straws of rice, wheat and the like.
At present, grain harvesting machine's cooling system in the domestic market mostly uses belt drive as the owner, and belt drive has the maintenance cost low, and the characteristics that the reliability is high, and grain harvesting machine operation in-process, the phenomenon that dust and garrulous leaf blockked up the radiator inlet port often can appear, and then leads to grain harvesting machine to appear the problem of high temperature easily.
In the prior art, in order to avoid such a fault phenomenon, manufacturers mostly adopt several methods such as increasing the area of an air inlet, changing the air inlet position, adding an impurity removal device and a reverse fan for dust removal. The method of reversing the fan has a good dust removing effect on dust adsorbed on the surface of the air inlet hole. The mode of the reversing fan comprises a belt transmission mode, an electric mode, a hydraulic transmission mode, a hydraulic control mode or an electric control reversing fan fin mode and the like, but the belt transmission structure is relatively complex, and the belt is easy to jump in the using process, so that the forward and reverse rotation functions are lost.
Therefore, how to provide a transmission device capable of improving the reliability of the cooling fan is a technical problem to be solved at present.
Disclosure of Invention
The embodiment of the invention provides a positive and negative rotation transmission device of a cooling fan, which adopts a motor control mode to automatically control so as to judge the working state, sets a positive and negative rotation switching time interval and positive and negative rotation time according to the actual condition, effectively solves the problem that the rotation speed and the rotation time of the cooling fan cannot be adjusted according to the actual working condition in the prior art, and effectively improves the reliability of the transmission device.
In order to achieve the above object, the present invention provides a forward/reverse rotation transmission device for a cooling fan, the device comprising:
a power output end;
the intermediate shaft belt pulley is connected to the power output end;
a transition pulley connected to the intermediate shaft pulley;
the movable pulley is connected with the transition pulley;
the tensioning pull rod is connected with the movable disc belt pulley and is used for driving the movable disc belt pulley to change the steering direction of the heat dissipation fan;
the motor is connected with the tensioning pull rod and used for controlling the rotating speed of the tensioning pull rod;
the speed reducer is connected with the motor and used for reducing the speed of the motor;
a transmission ratio sensor is arranged on the speed reducer, and the transmission ratio of the speed reducer is acquired through the transmission ratio sensor;
the movable disc belt pulley, the power output end and the transition belt pulley are connected in a closed loop mode through a first belt; the intermediate shaft belt pulley, the transition belt pulley and the movable plate belt pulley are connected with each other to form a closed loop;
the power output end is provided with a temperature sensor, the temperature of the engine sealed cabin is acquired through the temperature sensor, the power output end is also provided with an image sensor, and the volume of a blocking object at the position of the cooling fan is acquired through the image sensor;
the movable disc belt pulley is provided with a time sensor for detecting the rotation time of the movable disc belt pulley;
and the control device is electrically connected with the power output end and the tensioning pull rod respectively so as to control the power output end and the tensioning pull rod.
Preferably, the movable disc belt pulley comprises a movable disc, a first belt pulley, a second belt pulley and a third belt pulley, and the first belt pulley, the second belt pulley and the third belt pulley are arranged on the movable disc in a triangular shape;
the first belt pulley, the second belt pulley and the third belt pulley are all provided with a plurality of transmission surfaces and are connected in a closed loop mode through a second belt;
the first belt pulley or the third belt pulley is connected to the second belt pulley through the first belt, and the second belt pulley is used for driving the heat dissipation fan.
Preferably, a first tension pulley and a second tension pulley are further arranged between the intermediate shaft pulley and the power output end.
Preferably, the apparatus further comprises:
the bracket is hinged at the tail end of the tensioning pull rod;
the gear is connected with the motor, a gear shaft is arranged on the gear, the gear shaft is connected with the tensioning pull rod, and the gear is used for driving the tensioning pull rod to rotate around the support.
Preferably, the tension link includes:
a screw;
the compression spring is sleeved on the outer side of the screw rod;
and the sliding sleeve is arranged between the screw rod and the compression spring.
Preferably, the control device includes:
the acquisition module is used for acquiring the temperature of the engine sealed cabin, the volume of a blockage, the transmission ratio of the speed reducer and the time when the movable disc belt wheel rotates forwards;
the processing module is used for adjusting the rotating speed of the forward rotation of the movable disc belt pulley according to the temperature of the engine sealed cabin, adjusting the reverse rotation time of the movable disc belt pulley according to the forward rotation time of the movable disc belt pulley, and adjusting the forward and reverse rotation switching time of the movable disc belt pulley according to the transmission ratio of the speed reducer;
and the control module is used for controlling the power output end and the tensioning pull rod.
Preferably, in the processing module, when the rotating speed of the forward rotation of the movable pulley is adjusted according to the temperature of the engine sealed cabin,
determining the temperature A of the engine sealed cabin, presetting a temperature matrix A0 of the engine sealed cabin, and setting A0 (A1, A2, A3 and A4), wherein A1 is the temperature of a first preset engine sealed cabin, A2 is the temperature of a second preset engine sealed cabin, A3 is the temperature of a third preset engine sealed cabin, A4 is the temperature of a fourth preset engine sealed cabin, and A1 is more than A2 and more than A3 and less than A4;
presetting a forward rotation speed matrix B0 of the movable disc belt pulley, and setting B0 (B1, B2, B3 and B4), wherein B1 is a first preset forward rotation speed, B2 is a second preset forward rotation speed, B3 is a third preset forward rotation speed, B4 is a fourth preset forward rotation speed, and B1 is more than B2 and less than B3 and less than B4;
setting the forward rotation speed of the movable disc pulley according to the relationship between the temperature A of the engine sealed cabin and the temperature matrix of each preset engine sealed cabin:
when A is less than A1, selecting the first preset forward rotation speed B1 as the forward rotation speed of the movable disc belt pulley;
when A1 is more than or equal to A and less than A2, selecting the second preset forward rotation speed B2 as the forward rotation speed of the movable disc belt pulley;
when A2 is more than or equal to A and less than A3, selecting the third preset forward rotation speed B3 as the forward rotation speed of the movable disc belt pulley;
and when A3 is more than or equal to A and less than A4, selecting the fourth preset forward rotation speed B4 as the forward rotation speed of the movable disc belt pulley.
Preferably, in the process module, when the reverse rotation time of the movable platen pulley is adjusted according to the forward rotation time of the movable platen pulley,
determining the forward rotation time C of the movable disc belt pulley, presetting a forward rotation time matrix C0 of the movable disc belt pulley, and setting C0 (C1, C2, C3 and C4), wherein C1 is first preset forward rotation time, C2 is second preset forward rotation time, C3 is third preset forward rotation time, C4 is fourth preset forward rotation time, and C1 is more than C2 and less than C3 and less than C4;
presetting a reverse rotation time matrix D0 of the movable disc belt pulley, and setting D0 (D1, D2, D3 and D4), wherein D1 is a first preset reverse rotation time, D2 is a second preset reverse rotation time, D3 is a third preset reverse rotation time, D4 is a fourth preset reverse rotation time, and D1 is more than D2 and less than D3 and less than D4;
according to the relation setting between the corotation time C of driving disk belt pulley and each corotation time matrix of predetermineeing the driving disk belt pulley the reversal time of driving disk belt pulley:
when C is less than C1, selecting the first preset reverse rotation time D1 as the reverse rotation time of the movable disc belt wheel;
when C1 is not less than C and is less than C2, selecting the second preset reverse rotation time D2 as the reverse rotation time of the movable disc belt pulley;
when C2 is larger than or equal to C and smaller than C3, selecting the third preset reverse rotation time D3 as the reverse rotation time of the movable disc belt pulley;
and when C3 is not less than C and is less than C4, selecting the fourth preset reverse rotation time D4 as the reverse rotation time of the movable disc belt pulley.
Preferably, in the processing module, the reverse rotation time of the movable platen pulley is also corrected according to the volume of the blockage,
determining the volume E of a blockage, presetting a blockage volume matrix E0, and setting E0 (E1, E2, E3, E4), wherein E1 is the volume of a first preset blockage, E2 is the volume of a second preset blockage, E3 is the volume of a third preset blockage, E4 is the volume of a fourth preset blockage, and E1 is more than E2 and less than E3 and less than E4;
presetting a reverse rotation time correction coefficient matrix h of the movable disc belt pulley, and setting h (h 1, h2, h3, h 4), wherein h1 is a first preset reverse rotation time correction coefficient, h2 is a second preset reverse rotation time correction coefficient, h3 is a third preset reverse rotation time correction coefficient, h4 is a fourth preset reverse rotation time correction coefficient, and h1 is more than 0.8, more than h2, more than h3, more than h4 and less than 1.4;
correcting the reverse rotation time of the movable disc pulley according to the relation between the volume E of the blockage and the volume matrix of each preset blockage:
when E is less than E1, selecting the first preset reverse rotation time correction coefficient h1 to correct the reverse rotation time D1 of the first preset movable disc pulley, wherein the corrected reverse rotation time of the movable disc pulley is D1 x h1;
when E1 is not more than E and less than E2, selecting a second preset reversal time correction coefficient h2 to correct the reversal time D2 of the second preset movable pulley, wherein the corrected reversal time of the movable pulley is D2 x h2;
when E2 is not more than E and less than E3, selecting a third preset reversal time correction coefficient h3 to correct the reversal time D3 of the third preset movable pulley, wherein the corrected reversal time of the movable pulley is D3 x h3;
and when E3 is not more than E and less than E4, selecting a fourth preset reverse rotation time correction coefficient h4 to correct the reverse rotation time D4 of the fourth preset movable pulley, wherein the corrected reverse rotation time of the movable pulley is D4 x h4.
Preferably, in the processing module, when the forward and reverse rotation switching time interval of the movable disc pulley is adjusted according to the transmission ratio of the speed reducer,
determining a transmission ratio K of the speed reducer, presetting a transmission ratio matrix K0 of the speed reducer, and setting K0 (K1, K2, K3 and K4), wherein K1 is the transmission ratio of a first preset speed reducer, K2 is the transmission ratio of a second preset speed reducer, K3 is the transmission ratio of a third preset speed reducer, K4 is the transmission ratio of a fourth preset speed reducer, and K1 is more than K2 and less than K3 and less than K4;
presetting a forward and reverse rotation switching time interval matrix T0 of the movable disc belt pulley, and setting T0 (T1, T2, T3 and T4), wherein T1 is a first preset forward and reverse rotation switching time interval, T2 is a second preset forward and reverse rotation switching time interval, T3 is a third preset forward and reverse rotation switching time interval, T4 is a fourth preset forward and reverse rotation switching time interval, and T1 is more than T2 and less than T3 and less than T4;
setting the forward and reverse switching time interval of the movable disc belt pulley according to the relation between the transmission ratio K of the speed reducer and the transmission ratio matrix of each preset speed reducer:
when K is smaller than K1, selecting the first preset forward and reverse rotation switching time interval T1 as the forward and reverse rotation switching time interval of the movable disc belt wheel;
when K1 is not less than K and is less than K2, selecting the second preset forward and reverse rotation switching time interval T2 as the forward and reverse rotation switching time interval of the movable disc belt pulley;
when K2 is more than or equal to K and less than K3, selecting the third preset forward and reverse rotation switching time interval T3 as the forward and reverse rotation switching time interval of the movable disc belt pulley;
and when K3 is more than or equal to K and less than K4, selecting the fourth preset forward and reverse rotation switching time interval T4 as the forward and reverse rotation switching time interval of the movable disc belt pulley.
The invention provides a positive and negative rotation transmission device of a cooling fan, which has the following beneficial effects compared with the prior art:
the transmission device comprises a power output end, an intermediate shaft belt pulley, a transition belt pulley, a movable disc belt pulley, a tensioning pull rod, a motor, a speed reducer and a control device, wherein the speed reducer is provided with a transmission ratio sensor for acquiring the transmission ratio of the speed reducer, the power output end is provided with a temperature sensor for acquiring the temperature of an engine sealed cabin, the power output end is also provided with an image sensor for acquiring the volume of a blockage at a radiating fan, and the movable disc belt pulley is provided with a time sensor for detecting the rotation time of the movable disc belt pulley. The control device controls the power output end and the tension pull rod, and can well set the forward and reverse rotation switching time interval and the forward and reverse rotation time of the movable disc belt pulley and the rotating speed of the movable disc belt pulley according to the actual working state of the transmission device, thereby effectively improving the stability of the device and avoiding the waste of resources.
Drawings
FIG. 1 shows a schematic diagram of gear train transitions in an embodiment of the invention;
FIG. 2 shows a first state train diagram in an embodiment of the invention;
FIG. 3 shows a second state train diagram in an embodiment of the invention;
FIG. 4 is a schematic view of a cam plate in a first operating condition in an embodiment of the present invention;
FIG. 5 is a schematic view of the movable disk in a second operational state in an embodiment of the present invention;
FIG. 6 shows a front view of a cam plate in an embodiment of the present invention;
FIG. 7 shows a side cross-sectional view of a movable plate in an embodiment of the invention;
FIG. 8 shows a schematic top view of a cam plate in an embodiment of the present invention;
FIG. 9 is a schematic view showing the connection between the heat dissipating fan and the direction changing device in the embodiment of the present invention;
FIG. 10 shows a schematic side view of an engine in an embodiment of the invention;
FIG. 11 shows a schematic top view of an engine in an embodiment of the invention;
FIG. 12 shows a schematic structural view of a tension link in an embodiment of the present invention;
fig. 13 shows a functional block diagram of a control device in an embodiment of the present invention.
In the figure, 1, an engine; 2. a second tensioning wheel; 3. a transition pulley; 4. a heat radiation fan; 5. a first pulley; 6. a speed reducer; 7. a motor; 8. a position sensor; 9. a gear; 10. connecting a pipeline; 11. a heat-dissipating fan; 12. a power output end; 13. a first tensioning wheel; 14. an intermediate shaft pulley; 15. a heat sink; 16. tensioning the tension rod; 17. a support; 18. a frame; 19. a movable plate; 20. multi-wedge; 21. an SC type belt; 22. a second pulley; 23. a first pulley; 24. a crosshead shoe; 25. a movable plate; 26. a third belt pulley; 27. a time sensor; 28. a gear ratio sensor; 29. an image sensor; 30. a temperature sensor; 40. a control device; 100. an acquisition module; 110. a processing module; 120. and a control module.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 12, an embodiment of the present invention discloses a forward and reverse rotation transmission device for a cooling fan, the device includes:
a power take-off 12;
an intermediate shaft pulley 14 connected to the power output end 12;
a transition pulley 3 connected to the intermediate shaft pulley 14;
the movable pulley is connected with the transition pulley 3;
a tension rod 16 connected to the movable pulley for driving the movable pulley to change the rotation direction of the heat dissipation fan 11;
the motor 7 is connected with the tensioning pull rod 16 and is used for controlling the rotating speed of the tensioning pull rod 16;
the speed reducer 6 is connected to the motor 7 and used for reducing the speed of the motor 7;
a transmission ratio sensor 28 is arranged on the speed reducer 6, and the transmission ratio of the speed reducer 6 is acquired through the transmission ratio sensor 28;
the movable disc belt pulley, the power output end 12 and the transition belt pulley 3 are connected in a closed loop mode through a first belt; the intermediate shaft belt pulley 14, the transition belt pulley 3 and the movable plate belt pulley are connected with each other to form a closed loop;
the power output end 12 is provided with a temperature sensor 3. The temperature of the engine sealed cabin is collected through the temperature sensor 30, the power output end 12 is also provided with an image sensor 30, and the volume of a blockage at the position of the cooling fan 11 is collected through the image sensor 30;
the movable disc belt wheel is provided with a time sensor 27 for detecting the rotation time of the movable disc belt wheel;
and the control device 40 is electrically connected with the power output end 12 and the tensioning pull rod 16 respectively so as to control the power output end 12 and the tensioning pull rod 16.
It should be noted that the transmission device in the present invention includes a power output end 12, an intermediate shaft belt pulley 14, a transition belt pulley 3, a movable disc belt pulley, a tensioning pull rod 16, a motor 7, a speed reducer 6 and a control device 40, a transmission ratio sensor 28 is arranged on the speed reducer 6 and is used for acquiring a transmission ratio of the speed reducer 6, a temperature sensor 30 is arranged on the power output end 12 and is used for acquiring a temperature of an engine sealed cabin, an image sensor 29 is further arranged on the power output end 12 and is used for acquiring a volume of a blockage at the position of the cooling fan 11, and a time sensor 27 is arranged on the movable disc belt pulley and is used for detecting a rotation time of the movable disc belt pulley. The control device 40 is used for controlling the power output end 12 and the tension pull rod 16, so that the forward and reverse rotation switching time interval and the forward and reverse rotation time of the movable disc belt pulley and the rotating speed of the movable disc belt pulley can be well set according to the actual working state of the transmission device, the stability of the device is effectively improved, and the waste of resources is avoided.
In some embodiments of the present application, the movable pulley comprises a movable pulley 19, a first pulley 23, a second pulley 22 and a third pulley 26, and the first pulley 23, the second pulley 22 and the third pulley 26 are disposed in a triangular shape on the movable pulley 19;
the first belt pulley 23, the second belt pulley 22 and the third belt pulley 26 are all provided with a plurality of transmission surfaces, and the first belt pulley 23, the second belt pulley 22 and the third belt pulley 26 are connected in a closed loop manner through a second belt;
the first pulley 23 or the third pulley 26 is connected to the second pulley 22 through the first belt, and the second pulley 22 is used for driving the heat dissipation fan 11.
It should be noted that, the tension pull rod 16 of the present invention can maintain the movable pulley in a tensioned state by converting between kinetic energy and elastic potential energy, which effectively improves the stability of the device.
In some embodiments of the present application, a first tension pulley 13 and a second tension pulley 2 are further disposed between the intermediate shaft pulley 14 and the power take-off 12.
In the invention, when the forward and reverse rotation of the movable pulley is switched, the transmission belt can be effectively tightened by arranging the tension pulley, so that the belt is prevented from jumping.
In some embodiments of the present application, further comprising:
a bracket 17 hinged to the end of the tension rod 16;
the gear 9 is connected to the motor 7, a gear shaft is arranged on the gear 9, the gear shaft is connected to the tensioning pull rod 16, and the gear 9 is used for driving the tensioning pull rod 16 to rotate around the support 17.
In some embodiments of the present application, the tension tie 16 comprises:
a screw;
the compression spring is sleeved on the outer side of the screw rod;
and the sliding sleeve is arranged between the screw rod and the compression spring.
It should be noted that the tension pull rod in the invention is tightened by a plurality of springs, so that the tension force can be conveniently controlled, the movement displacement of the slide block can be conveniently controlled, the forward and reverse rotation can be cleanly realized, meanwhile, the sliding sleeve is arranged between the compression spring and the screw rod, the friction between the spring and the screw rod can be prevented, and the reliability and the service life of the tension pull rod 16 can be improved.
In some embodiments of the present application, the control device 40 includes:
the acquisition module is used for acquiring the temperature of the engine sealed cabin, the volume of a blockage, the transmission ratio of the speed reducer 6 and the time when the movable disc belt wheel rotates forwards;
the processing module is used for adjusting the rotating speed of the forward rotation of the movable disc belt pulley according to the temperature of the engine sealed cabin, adjusting the reverse rotation time of the movable disc belt pulley according to the forward rotation time of the movable disc belt pulley, and adjusting the forward and reverse rotation switching time of the movable disc belt pulley according to the transmission ratio of the speed reducer;
and the control module is used for controlling the power output end 12 and the tensioning pull rod 16.
It should be noted that, the control device 40 of the present invention controls the power output end 12 and the tension rod 16, so that the working state of the transmission device can be well adjusted according to the actual situation of the transmission device, and the working efficiency is improved.
In some embodiments of the present application, in the process module, when adjusting the rotational speed at which the movable sheave pulley is rotated forward according to the temperature of the engine compartment,
determining the temperature A of the engine sealed cabin, presetting a temperature matrix A0 of the engine sealed cabin, and setting A0 (A1, A2, A3 and A4), wherein A1 is the temperature of a first preset engine sealed cabin, A2 is the temperature of a second preset engine sealed cabin, A3 is the temperature of a third preset engine sealed cabin, A4 is the temperature of a fourth preset engine sealed cabin, and A1 is more than A2 and more than A3 and less than A4;
presetting a forward rotation speed matrix B0 of the movable disc belt pulley, and setting B0 (B1, B2, B3 and B4), wherein B1 is a first preset forward rotation speed, B2 is a second preset forward rotation speed, B3 is a third preset forward rotation speed, B4 is a fourth preset forward rotation speed, and B1 is more than B2 and less than B3 and less than B4;
setting the forward rotation speed of the movable disc belt pulley according to the relationship between the temperature A of the engine sealed cabin and the temperature matrix of each preset engine sealed cabin:
when A is less than A1, selecting the first preset forward rotation speed B1 as the forward rotation speed of the movable disc belt pulley;
when A1 is more than or equal to A and less than A2, selecting the second preset forward rotation speed B2 as the forward rotation speed of the movable disc belt pulley;
when A2 is more than or equal to A and less than A3, selecting the third preset forward rotation speed B3 as the forward rotation speed of the movable disc belt pulley;
and when A3 is more than or equal to A and less than A4, selecting the fourth preset forward rotation speed B4 as the forward rotation speed of the movable disc belt pulley.
It should be noted that the temperature of the engine working cabin is collected in real time, and the forward rotation speed of the movable disc belt pulley is adjusted through the actual temperature, so that the waste of resources is effectively avoided, and the problem that the transmission device is damaged due to overhigh temperature is avoided.
In some embodiments of the present application, in the process module, when the reverse rotation time of the movable platen pulley is adjusted according to the forward rotation time of the movable platen pulley,
determining the forward rotation time C of the movable disc belt pulley, presetting a forward rotation time matrix C0 of the movable disc belt pulley, and setting C0 (C1, C2, C3 and C4), wherein C1 is first preset forward rotation time, C2 is second preset forward rotation time, C3 is third preset forward rotation time, C4 is fourth preset forward rotation time, and C1 is more than C2 and less than C3 and less than C4;
presetting a reverse rotation time matrix D0 of the movable disc belt pulley, and setting D0 (D1, D2, D3 and D4), wherein D1 is a first preset reverse rotation time, D2 is a second preset reverse rotation time, D3 is a third preset reverse rotation time, D4 is a fourth preset reverse rotation time, and D1 is more than D2 and less than D3 and less than D4;
setting the reverse rotation time of the movable disc belt pulley according to the relation between the forward rotation time C of the movable disc belt pulley and the forward rotation time matrix of each preset movable disc belt pulley:
when C is less than C1, selecting the first preset reverse rotation time D1 as the reverse rotation time of the movable plate belt pulley;
when C1 is not less than C and is less than C2, selecting the second preset reverse rotation time D2 as the reverse rotation time of the movable disc belt pulley;
when C2 is larger than or equal to C and smaller than C3, selecting the third preset reverse rotation time D3 as the reverse rotation time of the movable disc belt pulley;
and when C3 is not less than C and is less than C4, selecting the fourth preset reverse rotation time D4 as the reverse rotation time of the movable disc belt pulley.
It should be noted that, the reliability of the device can be further improved by detecting the forward rotation time of the movable pulley belt in real time and controlling the reverse rotation time of the movable pulley belt according to the forward rotation time.
In some embodiments of the application, in the processing module, the reverse rotation time of the movable platen pulley is also corrected according to the volume of the blockage,
determining the volume E of a blockage, presetting a blockage volume matrix E0, and setting E0 (E1, E2, E3, E4), wherein E1 is the volume of a first preset blockage, E2 is the volume of a second preset blockage, E3 is the volume of a third preset blockage, E4 is the volume of a fourth preset blockage, and E1 is more than E2 and less than E3 and less than E4;
presetting a reverse rotation time correction coefficient matrix h of the movable disc belt pulley, and setting h (h 1, h2, h3, h 4), wherein h1 is a first preset reverse rotation time correction coefficient, h2 is a second preset reverse rotation time correction coefficient, h3 is a third preset reverse rotation time correction coefficient, h4 is a fourth preset reverse rotation time correction coefficient, and h1 is more than 0.8, more than h2, more than h3, more than h4 and less than 1.4;
correcting the reverse rotation time of the movable disc pulley according to the relation between the volume E of the blockage and the volume matrix of each preset blockage:
when E is less than E1, selecting the first preset reversal time correction coefficient h1 to correct the reversal time D1 of the first preset movable pulley, wherein the corrected reversal time of the movable pulley is D1 x h1;
when E1 is not more than E and less than E2, selecting a second preset reversal time correction coefficient h2 to correct the reversal time D2 of the second preset movable pulley, wherein the corrected reversal time of the movable pulley is D2 x h2;
when E2 is not more than E and less than E3, selecting a third preset reversal time correction coefficient h3 to correct the reversal time D3 of the third preset movable pulley, wherein the corrected reversal time of the movable pulley is D3 x h3;
and when E3 is not more than E and less than E4, selecting a fourth preset reverse rotation time correction coefficient h4 to correct the reverse rotation time D4 of the fourth preset movable pulley, wherein the corrected reverse rotation time of the movable pulley is D4 x h4.
It should be noted that, in the invention, the volume of the blockage is detected in real time, the blockage can be dust or crushed leaves, which is not specifically limited herein, and the reversal time is corrected by the volume of the blockage, so that the dust removal efficiency of the transmission device can be improved, and the high temperature phenomenon can be avoided.
In some embodiments of the present application, in the processing module, when the forward/reverse switching time interval of the movable disk pulley is adjusted according to the transmission ratio of the decelerator,
determining a transmission ratio K of the speed reducer, presetting a transmission ratio matrix K0 of the speed reducer, and setting K0 (K1, K2, K3 and K4), wherein K1 is the transmission ratio of a first preset speed reducer, K2 is the transmission ratio of a second preset speed reducer, K3 is the transmission ratio of a third preset speed reducer, K4 is the transmission ratio of a fourth preset speed reducer, and K1 is more than K2 and less than K3 and less than K4;
presetting a forward and reverse rotation switching time interval matrix T0 of the movable disc belt pulley, and setting T0 (T1, T2, T3 and T4), wherein T1 is a first preset forward and reverse rotation switching time interval, T2 is a second preset forward and reverse rotation switching time interval, T3 is a third preset forward and reverse rotation switching time interval, T4 is a fourth preset forward and reverse rotation switching time interval, and T1 is more than T2 and less than T3 and less than T4;
setting the forward and reverse rotation switching time interval of the movable disc belt pulley according to the relationship between the transmission ratio K of the speed reducer and the transmission ratio matrix of each preset speed reducer:
when K is smaller than K1, selecting the first preset forward and reverse rotation switching time interval T1 as the forward and reverse rotation switching time interval of the movable disc belt wheel;
when K1 is not less than K and is less than K2, selecting the second preset forward and reverse rotation switching time interval T2 as the forward and reverse rotation switching time interval of the movable disc belt pulley;
when K2 is more than or equal to K and less than K3, selecting the third preset forward and reverse rotation switching time interval T3 as the forward and reverse rotation switching time interval of the movable disc belt pulley;
and when K3 is more than or equal to K and less than K4, selecting the fourth preset forward and reverse rotation switching time interval T4 as the forward and reverse rotation switching time interval of the movable disc belt pulley.
It should be noted that the forward and reverse switching time interval of the movable disc belt pulley is controlled by the transmission ratio of the speed reducer, so that the belt skipping of the transmission device can be well prevented, and the normal operation of the forward and reverse installation function of the movable disc belt pulley is ensured.
In summary, the transmission device of the present invention includes a power output end 12, an intermediate shaft pulley 14, a transition pulley 3, a movable disc pulley, a tension pull rod 16, a motor 7, a speed reducer 6 and a control device 40, wherein the speed reducer 6 is provided with a transmission ratio sensor 28 for acquiring a transmission ratio of the speed reducer 6, the power output end 12 is provided with a temperature sensor 30 for acquiring a temperature of an engine sealed cabin, the power output end 12 is further provided with an image sensor 29 for acquiring a volume of a blockage at the position of the cooling fan 11, and the movable disc pulley is provided with a time sensor 27 for detecting a rotation time of the movable disc pulley. The control device 40 is used for controlling the power output end 12 and the tension pull rod 16, so that the forward and reverse rotation switching time interval and the forward and reverse rotation time of the movable disc belt pulley and the rotating speed of the movable disc belt pulley can be well set according to the actual working state of the transmission device, the stability of the device is effectively improved, and the waste of resources is avoided.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
While the invention has been described with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention can be used in any combination with one another as long as there is no structural conflict, and nothing in this specification should be taken as a complete description of such combinations for the sake of brevity and resource savings. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a radiator fan is transmission that just reverses which characterized in that, the device includes:
a power take-off;
the intermediate shaft belt pulley is connected to the power output end;
a transition pulley connected to the intermediate shaft pulley;
the movable pulley is connected with the transition pulley;
the tensioning pull rod is connected with the movable disc belt pulley and is used for driving the movable disc belt pulley to change the steering direction of the heat dissipation fan;
the motor is connected with the tensioning pull rod and used for controlling the rotating speed of the tensioning pull rod;
the speed reducer is connected with the motor and used for reducing the speed of the motor;
a transmission ratio sensor is arranged on the speed reducer, and the transmission ratio of the speed reducer is acquired through the transmission ratio sensor;
the movable disc belt pulley, the power output end and the transition belt pulley are connected in a closed loop mode through a first belt; the intermediate shaft belt pulley, the transition belt pulley and the movable disc belt pulley are connected with each other to form a closed loop;
the power output end is provided with a temperature sensor, the temperature of the engine sealed cabin is acquired through the temperature sensor, the power output end is also provided with an image sensor, and the volume of a blockage at the position of the cooling fan is acquired through the image sensor;
the movable disc belt pulley is provided with a time sensor for detecting the rotation time of the movable disc belt pulley;
and the control device is electrically connected with the power output end and the tensioning pull rod respectively so as to control the power output end and the tensioning pull rod.
2. The positive and negative rotation transmission device for a cooling fan according to claim 1,
the movable disc belt pulley comprises a movable disc, a first belt pulley, a second belt pulley and a third belt pulley, and the first belt pulley, the second belt pulley and the third belt pulley are arranged on the movable disc in a triangular mode;
the first belt pulley, the second belt pulley and the third belt pulley are provided with a plurality of transmission surfaces and are connected in a closed loop manner through a second belt;
the first belt pulley or the third belt pulley is connected to the second belt pulley through the first belt, and the second belt pulley is used for driving the heat dissipation fan.
3. The cooling fan forward and reverse rotation transmission device according to claim 1,
and a first tension pulley and a second tension pulley are also arranged between the intermediate shaft belt pulley and the power output end.
4. The cooling fan forward and reverse rotation transmission device according to claim 1, further comprising:
the bracket is hinged at the tail end of the tensioning pull rod;
the gear is connected with the motor, a gear shaft is arranged on the gear, the gear shaft is connected with the tensioning pull rod, and the gear is used for driving the tensioning pull rod to rotate around the support.
5. The cooling fan positive and negative rotation transmission device according to claim 1, wherein the tension rod comprises:
a screw;
the compression spring is sleeved on the outer side of the screw rod;
and the sliding sleeve is arranged between the screw rod and the compression spring.
6. The cooling fan forward/reverse rotation transmission device according to claim 1, wherein the control device comprises:
the acquisition module is used for acquiring the temperature of the engine sealed cabin, the volume of a blockage, the transmission ratio of the speed reducer and the time when the movable disc belt wheel rotates forwards;
the processing module is used for adjusting the rotating speed of the forward rotation of the movable disc belt pulley according to the temperature of the engine sealed cabin, adjusting the reverse rotation time of the movable disc belt pulley according to the forward rotation time of the movable disc belt pulley, and adjusting the forward and reverse rotation switching time of the movable disc belt pulley according to the transmission ratio of the speed reducer;
and the control module is used for controlling the power output end and the tensioning pull rod.
7. The apparatus as claimed in claim 6, wherein in the processing module, when the rotational speed of the movable pulley is adjusted in the forward rotation direction according to the temperature of the engine compartment,
determining the temperature A of the engine sealed cabin, presetting a temperature matrix A0 of the engine sealed cabin, and setting A0 (A1, A2, A3 and A4), wherein A1 is the temperature of a first preset engine sealed cabin, A2 is the temperature of a second preset engine sealed cabin, A3 is the temperature of a third preset engine sealed cabin, A4 is the temperature of a fourth preset engine sealed cabin, and A1 is more than A2 and more than A3 and less than A4;
presetting a forward rotation speed matrix B0 of the movable disc belt pulley, and setting B0 (B1, B2, B3 and B4), wherein B1 is a first preset forward rotation speed, B2 is a second preset forward rotation speed, B3 is a third preset forward rotation speed, B4 is a fourth preset forward rotation speed, and B1 is more than B2 and less than B3 and less than B4;
setting the forward rotation speed of the movable disc pulley according to the relationship between the temperature A of the engine sealed cabin and the temperature matrix of each preset engine sealed cabin:
when A is less than A1, selecting the first preset forward rotation speed B1 as the forward rotation speed of the movable disc belt pulley;
when A1 is more than or equal to A and less than A2, selecting the second preset forward rotation speed B2 as the forward rotation speed of the movable disc belt pulley;
when A2 is more than or equal to A and less than A3, selecting the third preset forward rotation speed B3 as the forward rotation speed of the movable disc belt pulley;
and when A3 is more than or equal to A and less than A4, selecting the fourth preset forward rotation speed B4 as the forward rotation speed of the movable disc belt pulley.
8. The cooling fan regular/reverse rotation transmission device according to claim 6, wherein in the processing module, when the reverse rotation time of the movable platen pulley is adjusted according to the regular rotation time of the movable platen pulley,
determining the forward rotation time C of the movable disc belt pulley, presetting a forward rotation time matrix C0 of the movable disc belt pulley, and setting C0 (C1, C2, C3 and C4), wherein C1 is first preset forward rotation time, C2 is second preset forward rotation time, C3 is third preset forward rotation time, C4 is fourth preset forward rotation time, and C1 is more than C2 and less than C3 and less than C4;
presetting a reverse rotation time matrix D0 of the movable disc belt pulley, and setting D0 (D1, D2, D3 and D4), wherein D1 is a first preset reverse rotation time, D2 is a second preset reverse rotation time, D3 is a third preset reverse rotation time, D4 is a fourth preset reverse rotation time, and D1 is more than D2 and less than D3 and less than D4;
setting the reverse rotation time of the movable disc belt pulley according to the relation between the forward rotation time C of the movable disc belt pulley and the forward rotation time matrix of each preset movable disc belt pulley:
when C is less than C1, selecting the first preset reverse rotation time D1 as the reverse rotation time of the movable plate belt pulley;
when C1 is not less than C and is less than C2, selecting the second preset reverse rotation time D2 as the reverse rotation time of the movable disc belt pulley;
when C2 is larger than or equal to C and smaller than C3, selecting the third preset reverse rotation time D3 as the reverse rotation time of the movable disc belt wheel;
and when C3 is not less than C and is less than C4, selecting the fourth preset reverse rotation time D4 as the reverse rotation time of the movable disc belt pulley.
9. The apparatus according to claim 8, wherein the process module further corrects the reverse rotation time of the movable platen pulley according to the volume of the clogging object,
determining the volume E of the blockage, presetting a blockage volume matrix E0, and setting E0 (E1, E2, E3, E4), wherein E1 is the volume of a first preset blockage, E2 is the volume of a second preset blockage, E3 is the volume of a third preset blockage, E4 is the volume of a fourth preset blockage, and E1 is more than E2 and more than E3 and more than E4;
presetting a reverse rotation time correction coefficient matrix h of the movable disc belt pulley, and setting h (h 1, h2, h3, h 4), wherein h1 is a first preset reverse rotation time correction coefficient, h2 is a second preset reverse rotation time correction coefficient, h3 is a third preset reverse rotation time correction coefficient, h4 is a fourth preset reverse rotation time correction coefficient, and h1 is more than 0.8, more than h2, more than h3, more than h4 and less than 1.4;
correcting the reverse rotation time of the movable disc pulley according to the relation between the volume E of the blockage and the volume matrix of each preset blockage:
when E is less than E1, selecting the first preset reversal time correction coefficient h1 to correct the reversal time D1 of the first preset movable pulley, wherein the corrected reversal time of the movable pulley is D1 x h1;
when E1 is not more than E and less than E2, selecting a second preset reversal time correction coefficient h2 to correct the reversal time D2 of the second preset movable pulley, wherein the corrected reversal time of the movable pulley is D2 x h2;
when E2 is not more than E and less than E3, selecting a third preset reversal time correction coefficient h3 to correct the reversal time D3 of the third preset movable pulley, wherein the corrected reversal time of the movable pulley is D3 x h3;
and when E3 is not more than E and less than E4, selecting a fourth preset reverse rotation time correction coefficient h4 to correct the reverse rotation time D4 of the fourth preset movable pulley, wherein the corrected reverse rotation time of the movable pulley is D4 x h4.
10. The cooling fan forward/reverse rotation transmission device according to claim 6, wherein in the processing module, when the forward/reverse rotation switching time interval of the movable disk pulley is adjusted according to the transmission ratio of the speed reducer,
determining a transmission ratio K of the speed reducer, presetting a transmission ratio matrix K0 of the speed reducer, and setting K0 (K1, K2, K3 and K4), wherein K1 is the transmission ratio of a first preset speed reducer, K2 is the transmission ratio of a second preset speed reducer, K3 is the transmission ratio of a third preset speed reducer, K4 is the transmission ratio of a fourth preset speed reducer, and K1 is more than K2 and less than K3 and less than K4;
presetting a forward and reverse rotation switching time interval matrix T0 of the movable disc belt pulley, and setting T0 (T1, T2, T3 and T4), wherein T1 is a first preset forward and reverse rotation switching time interval, T2 is a second preset forward and reverse rotation switching time interval, T3 is a third preset forward and reverse rotation switching time interval, T4 is a fourth preset forward and reverse rotation switching time interval, and T1 is more than T2 and less than T3 and less than T4;
setting the forward and reverse switching time interval of the movable disc belt pulley according to the relation between the transmission ratio K of the speed reducer and the transmission ratio matrix of each preset speed reducer:
when K is smaller than K1, selecting the first preset forward and reverse rotation switching time interval T1 as the forward and reverse rotation switching time interval of the movable disc belt wheel;
when K1 is not less than K and is less than K2, selecting the second preset forward and reverse rotation switching time interval T2 as the forward and reverse rotation switching time interval of the movable disc belt pulley;
when K2 is more than or equal to K and less than K3, selecting the third preset forward and reverse rotation switching time interval T3 as the forward and reverse rotation switching time interval of the movable disc belt wheel;
and when K3 is more than or equal to K and less than K4, selecting the fourth preset forward and reverse rotation switching time interval T4 as the forward and reverse rotation switching time interval of the movable disc belt wheel.
CN202210759757.3A 2022-06-30 2022-06-30 Forward and reverse rotation transmission device of cooling fan Active CN115355287B (en)

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JPH1136862A (en) * 1997-07-22 1999-02-09 Kubota Corp Engine cooling device for working vehicle
JPH1191366A (en) * 1997-09-22 1999-04-06 Kubota Corp Engine cooling device for working machine
CN103036356A (en) * 2012-09-28 2013-04-10 共青城赛龙通信技术有限责任公司 Mobile phone motor with vibrating heat-radiating function
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CN104564769A (en) * 2015-01-28 2015-04-29 合肥联宝信息技术有限公司 Automatic dust removal control method and automatic dust removal control device for fans
US20190343048A1 (en) * 2018-05-08 2019-11-14 Cnh Industrial America Llc System and method for monitoring the amount of plant materials entering an agricultural harvester
CN111878552A (en) * 2020-08-25 2020-11-03 九方泰禾国际重工(青岛)股份有限公司 Forward and reverse rotation transmission device of cooling fan, cooling fan and steering method
CN212318689U (en) * 2020-08-25 2021-01-08 九方泰禾国际重工(青岛)股份有限公司 Positive and negative rotation transmission device of cooling fan and cooling fan

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1136862A (en) * 1997-07-22 1999-02-09 Kubota Corp Engine cooling device for working vehicle
JPH1191366A (en) * 1997-09-22 1999-04-06 Kubota Corp Engine cooling device for working machine
CN103036356A (en) * 2012-09-28 2013-04-10 共青城赛龙通信技术有限责任公司 Mobile phone motor with vibrating heat-radiating function
CN204024791U (en) * 2014-08-15 2014-12-17 徐工集团工程机械股份有限公司科技分公司 There is the loader independent heat dissipation control system of reverse function
CN104564769A (en) * 2015-01-28 2015-04-29 合肥联宝信息技术有限公司 Automatic dust removal control method and automatic dust removal control device for fans
US20190343048A1 (en) * 2018-05-08 2019-11-14 Cnh Industrial America Llc System and method for monitoring the amount of plant materials entering an agricultural harvester
CN111878552A (en) * 2020-08-25 2020-11-03 九方泰禾国际重工(青岛)股份有限公司 Forward and reverse rotation transmission device of cooling fan, cooling fan and steering method
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