CN108150443A - Rerersing fan, engine and reverse control method - Google Patents

Abstract

The present invention provides a kind of rerersing fan, engine and reverse control method, rerersing fan includes fan (C), further includes：The first layer train (A) that the fan (C) is driven to be rotated to a direction, the first layer train (A) has the first relay (41), first relay (41) first layer train (A) control fan (C) rotation when being powered；The second layer train (B) that the fan (C) is driven to be rotated to another direction, the second layer train (B) has the second relay (42), second relay (42) second layer train (B) control fan (C) rotation when being powered.Rerersing fan provided by the invention, it is only necessary to which the drive respectively of fan can be realized commutation blowing in first layer train and second layer train so that the control structure of rerersing fan is simple, without changing the angle of electric fan, reduces the difficulty of processing of rerersing fan.

Description

Reversing fan, engine and reversing control method

technical field

The invention relates to the technical field of engine equipment, in particular to a reversing fan, an engine and a reversing control method.

Background technique

Engines are commonly used in a variety of equipment. Taking the agricultural machinery engine as an example, the engine is equipped with a reversing fan, which blows off the crop debris on the engine and the water tank through the reversing action to prevent risks such as combustion caused by high temperature.

The current reversing fan is a hydraulic reversing fan, the rotation direction of the hydraulic reversing fan remains unchanged, and the angle of the fan blade is changed by switching on and off the hydraulic oil, thereby changing the wind direction.

However, due to the need to change the angle of the fan blades through the on-off of the hydraulic oil, the number of the fan blades is multiple, and all need to be connected with the hydraulic oil circuit, so that the control structure of the reversing fan is complicated, and changing the fan blades It is more difficult to control the angle of the reversing fan, which makes the processing of the reversing fan more difficult.

Therefore, how to simplify the control structure and reduce the processing difficulty is an urgent problem to be solved by those skilled in the art.

Contents of the invention

In view of this, the present invention provides a reversing fan to simplify the control structure and reduce the processing difficulty. The invention also provides an engine and a reversing control method.

In order to achieve the above object, the present invention provides the following technical solutions:

A reversing fan, including a fan, also includes:

A first gear train that drives the fan to rotate in one direction, the first gear train has a first relay, and when the first relay is energized, the first gear train controls the rotation of the fan;

The second gear train drives the fan to rotate in another direction. The second gear train has a second relay. When the second relay is energized, the second gear train controls the rotation of the fan.

Preferably, in the reversing fan above, the reversing fan includes a combined electromagnetic clutch matched with the fan, and the combined electromagnetic clutch has a first sheave and a second sheave independent of each other;

The first gear train includes the first sheave, and the second gear train includes the second sheave;

When the first relay is energized, the first sheave cooperates with the fan to drive, and when the second relay is energized, the second sheave cooperates with the fan to drive.

Preferably, in the above-mentioned reversing fan, the reversing fan further includes a combined idler wheel, a driving wheel, a first transmission belt and a second transmission belt;

The combination idler wheel, the first sheave and the driving wheel are driven by the first transmission belt to form the first layer of gear train;

The combination idler and the second sheave are driven by the second transmission belt to form the second layer of gear trains;

The rotation direction of the second transmission belt is opposite to that of the first transmission belt.

Preferably, in the above-mentioned reversing fan, the driving wheel and the first sheave are in contact with one side of the first transmission belt, and the combined idler is in contact with the other side of the first transmission belt. touch;

The combination idler wheel and the second sheave are in contact with the same side of the second transmission belt.

Preferably, in the reversing fan above, the combined idler wheel includes a first wheel portion and a second wheel portion that rotate synchronously;

The first wheel portion is in contact with the first transmission belt, and the second wheel portion is in contact with the second transmission belt.

Preferably, in the reversing fan above, the first wheel part is a flat wheel structure; the second wheel part is a slotted wheel structure.

Preferably, in the above reversing fan, the driving wheel is the crankshaft pulley of the engine.

Preferably, in the reversing fan above, the first layer of gear trains further includes:

a water pump pulley in contact with the first drive belt;

And/or, a tensioning pulley for tensioning the first transmission belt.

Preferably, the reversing fan above further includes a reversing switch for switching the first relay and the second relay.

The present invention also provides an engine, comprising a reversing fan, wherein the reversing fan is the reversing fan described in any one of the above.

The present invention also provides a reversing control method, using the reversing fan as described in any one of the above, including steps:

1) During initial startup, the first relay is in the pull-in state, and the second relay is in the off state;

2) When the user judges that commutation is needed, control the first relay to cut off and the second relay to pull in; when the user judges that the commutation is over, control the second relay to cut off and the first relay to pull in.

Preferably, in the above reversing control method, in step 2), when the user judges that reversing is required, the first relay is controlled to be cut off, and after a predetermined time delay, the second relay is turned on;

And/or, when the user judges that the commutation ends, the second relay is controlled to be cut off, and after a predetermined time delay, the first relay is turned on.

In the reversing fan provided by the present invention, the first layer of gear trains and the second layer of gear trains control the rotation directions of the reversing fan in different directions. By controlling the power on and off of the first relay and the second relay, one of the first gear train and the second gear train controls the rotation of the fan. Through the above arrangement, the switching of the rotation direction of the fan is realized. Under the condition that the position of the fan and the angle of the blades of the fan remain unchanged, by changing the rotation direction of the fan, the air outlet direction of the fan is changed, and the operation of reversing the air blowing is realized. The reversing fan provided by the present invention can achieve reversing blowing only by driving the fan on the first layer of gear trains and the second layer of gear trains respectively, so that the control structure of the reversing fan is simple, and there is no need to change the angle of the fan blades. The processing difficulty of the reversing fan is reduced.

The embodiment of the invention also provides an engine and a reversing control method. Since the above-mentioned reversing fan has the above-mentioned technical effect, the engine with the above-mentioned reversing fan and the reversing control method should also have the same technical effect, which will not be repeated here.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the side structure diagram of the reversing fan provided by the embodiment of the invention;

Fig. 2 is a schematic diagram of the rear structure of the reversing fan provided by the embodiment of the present invention.

Detailed ways

The invention provides a reversing fan to simplify the control structure and reduce the processing difficulty. The invention also provides an engine and a reversing control method.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a schematic diagram of the side structure of the reversing fan provided by the embodiment of the invention; FIG. 2 is a schematic diagram of the rear structure of the reversing fan provided by the embodiment of the invention.

A reversing fan provided by an embodiment of the present invention includes a fan C, a first gear train A and a second gear train B. The first gear train A drives the fan C to rotate in one direction. The first gear train A has a first relay 41. When the first relay 41 is energized, the first gear train A controls the fan C to rotate; the second gear train B drives The fan C rotates in another direction, and the second gear train B has a second relay 42. When the second relay 42 is energized, the second gear train B controls the fan C to rotate.

In the reversing fan provided by the embodiment of the present invention, the first gear train A and the second gear train B control the reversing fan C to rotate in different directions. Through the on-off control of the first relay 41 and the second relay 42 , one of the first gear train A and the second gear train B controls the rotation of the fan C. Through the above arrangement, the switching of the rotation direction of the fan C is realized. Under the condition that the position of the fan C and the angle of the fan blades remain unchanged, by changing the rotation direction of the fan C, the air outlet direction of the fan can be changed, and the operation of reversing the air blowing can be realized. The reversing fan provided by the embodiment of the present invention only needs to drive the fan C on the first layer of gear train A and the second layer of gear train B to realize the reversing air blowing, so that the control structure of the reversing fan is simple, and there is no need to change the fan The angle of the fan blade reduces the processing difficulty of the reversing fan.

It can be understood that the first gear train A and the second gear train B work independently of each other and do not act on the fan C at the same time.

Preferably, the reversing fan includes a combined electromagnetic clutch 4 matched with the fan C, and the combined electromagnetic clutch 4 has a first sheave and a second sheave independent of each other; the first layer of wheel train A includes the first sheave, the second sheave The layer wheel train B includes a second sheave; when the first relay 41 is energized, the first sheave cooperates with the fan C for transmission, and when the second relay 42 is energized, the second sheave cooperates with the fan C for transmission. That is, when the first relay 41 is energized, under the action of electromagnetic force, the first sheave pulls in with the drive shaft of the fan C, and the fan C is driven by the first sheave. At this time, the second relay 42 is disconnected, and the second The second sheave controlled by the relay 42 runs idly, and the first layer of gear train A works; when it is necessary to change direction so as to clean up the crop debris on the water tank or the engine, the first relay 41 is powered off, and the first sheave and the fan C are connected to each other. The drive shaft is disengaged, the second relay 42 is energized, and under the action of electromagnetic force, the second sheave pulls in with the drive shaft of the fan C, and the second wheel train B works.

As shown in Figure 2, the reversing fan also includes a combination idler 3, a driving wheel, a first transmission belt 7 and a second transmission belt 8; The first layer of wheel train A; the combined idler wheel 3 and the second sheave are driven by the second transmission belt 8 to form the second layer of wheel train B; the rotation direction of the second transmission belt 8 is opposite to that of the first transmission belt 7 . Through the above arrangement, only one driving wheel is needed, and the rotation of the second transmission belt 8 and the first transmission belt 7 is driven by combining the idler wheel 3 .

Preferably, the first transmission belt 7 is a V-ribbed belt, and the second transmission belt 8 is an elastic belt.

In this embodiment, the driving wheel and the first sheave are in contact with one side of the first transmission belt 7, and the combination idler 3 is in contact with the other side of the first transmission belt 7; the combination idler 3 and the second groove The wheel is in contact with the same side of the second transmission belt 8 . Through the above arrangement, the rotation direction of the driving wheel and the first sheave is opposite to that of the combination idler wheel 3, and the rotation direction of the combination idler wheel 3 is the same as that of the second sheave. Through the above arrangement, the first layer of wheel train A and the second layer of wheel train B share the combined idler wheel 3, and only the driving wheel drives the operation of the first layer of wheel train A and the second layer of wheel train B, which improves the speed of changing to the compactness of the fan.

In order to avoid the first transmission belt 7 and the second transmission belt 8 from interfering with each other, the combination idler wheel 3 includes a first wheel portion and a second wheel portion that rotate synchronously; the first wheel portion contacts the first transmission belt 7, and the second wheel portion contacts the second wheel portion. The drive belt 8 contacts.

Preferably, the first wheel part is a flat wheel structure; the second wheel part is a grooved wheel structure.

In this embodiment, the drive pulley is the crankshaft pulley 1 of the engine. It is also possible to set an independent driving device to be connected to the driving wheel, which will not be described one by one here and are all within the scope of protection.

In the reversing fan provided by the embodiment of the present invention, the first wheel train A further includes a water pump pulley 2 , and the water pump pulley 2 is in contact with the first transmission belt 7 . Through the above arrangement, the first transmission belt 7 drives the water pump pulley 2 to rotate.

Further, the first wheel train A further includes a tensioning pulley 6 for tensioning the first transmission belt 7 . Through the above arrangement, the tension degree of the first transmission belt 7 is ensured, thereby ensuring the transmission effect of the first transmission belt 7 .

The reversing fan provided by the embodiment of the present invention further includes a reversing switch for switching the first relay 41 and the second relay 42 . Through the reversing switch, it is only necessary to control the reversing switch to realize the switching of the first relay 41 and the second relay 42, thereby realizing the reversing operation of the reversing fan.

The embodiment of the present invention also provides an engine, which includes a reversing fan, and the reversing fan is any one of the reversing fans described above. Since the above-mentioned reversing fan has the above-mentioned technical effect, the engine with the above-mentioned reversing fan should also have the same technical effect, which will not be repeated here.

The embodiment of the present invention also provides a reversing control method, using any one of the above reversing fans, including the steps:

S1: At initial startup, the first relay 41 is in the pull-in state, and the second relay 42 is in the off state;

S2: When the user judges that commutation is needed, control the first relay 41 to cut off and the second relay 42 to pull in; when the user judges that the commutation is over, control the second relay 42 to cut off and the first relay 41 to pull in.

Through the above operations, through the switching between the first relay 41 and the second relay 42, one of the first gear train A and the second gear train B can drive the fan C, and the reversing blowing can be realized. , making the control structure of the reversing fan simple, without changing the angle of the fan blades, and reducing the processing difficulty of the reversing fan.

Preferably, in step S2, when the user judges that commutation is required, the first relay 41 is controlled to be cut off, and after a predetermined time delay, the second relay 42 is turned on; and/or, when the user judges that the commutation is completed, the second relay 41 is controlled to The relay 42 is cut off, and after a predetermined time delay, the first relay 41 is turned on. Through the above setting, the impact force caused by the speed difference caused by the sudden change of direction of the fan C is effectively avoided, and the service life is improved.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. A reversing fan, comprising fan (C), is characterized in that, also includes: The first gear train (A) that drives the fan (C) to rotate in one direction, the first gear train (A) has a first relay (41), and when the first relay (41) is energized, the The first gear train (A) controls the rotation of the fan (C); Drive the fan (C) to rotate in the second layer of gear train (B) in another direction, the second layer of gear train (B) has a second relay (42), when the second relay (42) is energized The second gear train (B) controls the rotation of the fan (C). 2. The reversing fan according to claim 1, characterized in that, the reversing fan includes a combined electromagnetic clutch (4) matched with the fan (C), and the combined electromagnetic clutch (4) has mutual independent first sheave and second sheave; The first gear train (A) includes the first sheave, and the second gear train (B) includes the second sheave; The first sheave cooperates with the fan (C) when the first relay (41) is energized, and the second sheave cooperates with the fan (C) when the second relay (42) is energized. transmission. 3. The reversing fan according to claim 2, characterized in that, the reversing fan further comprises a combined idler wheel (3), a driving wheel, a first transmission belt (7) and a second transmission belt (8); The combined idler wheel (3), the first sheave and the driving wheel are driven by the first transmission belt (7) to form the first wheel train (A); The combined idler wheel (3) and the second sheave are driven by the second transmission belt (8) to form the second layer of gear train (B); The rotation direction of the second transmission belt (8) is opposite to that of the first transmission belt (7). 4. The reversing fan according to claim 3, characterized in that, the driving wheel and the first sheave are in contact with one side of the first transmission belt (7), and the combined idler pulley ( 3) contact with the other side of the first transmission belt (7); The combined idler pulley (3) and the second sheave are in contact with the same side of the second drive belt (8). 5. The reversing fan according to claim 3, characterized in that, the combined idler wheel (3) comprises a first wheel part and a second wheel part rotating synchronously; The first wheel part is in contact with the first transmission belt (7), and the second wheel part is in contact with the second transmission belt (8). 6 . The reversing fan according to claim 5 , wherein the first wheel portion is a flat wheel structure; the second wheel portion is a grooved wheel structure. 7. The reversing fan according to claim 3, characterized in that, the driving wheel is a crankshaft pulley (1) of an engine. 8. The reversing fan according to claim 3, characterized in that, the first layer of gear train (A) further comprises: a water pump pulley (2), the water pump pulley (2) is in contact with the first transmission belt (7); And/or, a tensioning pulley (6) for tensioning the first transmission belt (7). 9. The reversing fan according to any one of claims 1-8, further comprising a reversing switch for switching the first relay (41) and the second relay (42). 10. An engine comprising a reversing fan, characterized in that the reversing fan is the reversing fan according to any one of claims 1-9. 11. A reversing control method, using the reversing fan according to any one of claims 1-9, characterized in that it comprises the steps of: 1) During initial start-up, the first relay (41) is in the pull-in state, and the second relay (42) is in the disconnected state; 2) When the user judges that commutation is required, control the first relay (41) to cut off, and the second relay (42) to pull in; when the user judges that commutation is over, control the second relay (42) to cut off , the first relay (41) pulls in. 12. The reversing control method according to claim 11, characterized in that in step 2), when the user judges that reversing is required, the first relay (41) is controlled to be cut off, and after a predetermined time delay, The second relay (42) pulls in; And/or, when the user judges that the commutation ends, the second relay (42) is controlled to be cut off, and after a predetermined time delay, the first relay (41) is turned on.