JP6272748B2 - Powder and particle feeder - Google Patents

Description

  The present invention relates to a granular material supply device including a blower for introducing wind for conveying wind power into a granular material supply path, and a blower motor that rotationally drives the blower.

As a granular material supply apparatus provided with the above blower and blower motor, there exists a thing of the structure as described in following [1], for example.
[1] A structure in which a feeding mechanism is provided below the hopper for storing fertilizer that is a granular material, and the fed granular material is sent to a fertilizer hose side on a conveying wind fed from a blower (for example, Patent Document 1).

JP 2002-95312 A (see paragraphs “0029” and “0054” and “FIGS. 15 to 17” in the drawings)

In the blower having the structure shown in Patent Document 1, the impeller is configured to be driven by an electric motor.
In general, in a structure in which an impeller is driven by an electric motor, a regulator is used for voltage stabilization of the motor, but there is no description in this document regarding a specific configuration of the regulator. Such an electric motor is provided with some means for cooling the regulator. As the means, a dedicated fan for cooling the heat radiating part of the regulator is used, and air is blown from the fan. In general, the cooling is performed at Therefore, there is room for improvement in that the structure for cooling the regulator tends to be complicated.

  The present invention is intended to simplify the overall structure by allowing a rational means to cool the regulator of the electric motor that drives the blower.

  The technical means in the granular material supply apparatus of the present invention has the following structural features and operational effects.

[Solution 1]
The technical means of the present invention taken in order to solve the above-mentioned problems are a blower for introducing wind for conveying wind power from a suction port portion provided in a blower case to a powder material supply path, and rotationally driving the blower. A blower motor, and a regulator provided in a drive circuit of the blower motor, the blower motor is provided on one side across a blower fan built in the blower case, and a heat radiating portion of the regulator is arranged to That is, it is provided on the side opposite to the side where the blower motor is located, with the blower fan in between so as to come into contact with the wind flowing through the road.

[Operation and effect of invention according to Solution 1]
According to the above solution, the flow of the wind by the blower for introducing wind for conveying wind power into the powder supply path can be effectively used for the cooling action of the regulator, and the dedicated blowing means There are advantages that the number of parts can be reduced and the structure can be simplified as compared with the case where the above is separately provided.

[Solution 2]
Another technical means of the present invention taken in order to solve the above problem is that the heat dissipating part is installed in an air passage in a blower case in which the blower fan is housed.

[Operation and effect of invention according to Solution 2 ]
According to said solution means 2 , the heat exchange with the conveyance wind by a blower fan is performed more effectively because a grip operation part installs a thermal radiation part in the air path in a blower case. At the same time, the conveying air that has received heat from the regulator is heated to some extent, and the conveying air can be used for conveying the granular material by wind without diffusing the air to the outside. Therefore, it is also advantageous in that it is easy to maintain the dry state of the powder during transportation.

[Solution 3 ]
Another technical means of the present invention taken to solve the above-mentioned problems is that the heat dissipating part has a heat sink, the cooling fin faces the air passage, and the longitudinal direction of the cooling fin is wind. That is, it is arranged along the flow direction.

[Operation and effect of invention according to Solution 3 ]
According to the above solution 3 , effective heat dissipation can be performed using a simple heat dissipation means such as a heat sink, and the longitudinal direction of the cooling fin is along the flow direction of the wind. There is an advantage that effective heat radiation is easily performed in a state where resistance to the conveying air is as small as possible.

It is a whole side view of a riding type rice transplanter. It is a whole top view of a riding type rice transplanter. It is a front view which shows the ventilation structure part of a fertilizer application apparatus. It is a side view which shows the positional relationship of a blower and a regulator. It is a perspective view which shows the attachment structure of a blower and a regulator. It is a perspective view which shows the positional relationship of the blower and regulator in another embodiment. It is a perspective view which shows the structure of the regulator in another embodiment.

Hereinafter, an example of an embodiment of a paddy field machine in the present invention will be described based on the drawings.
In the following description of the embodiment, the front-rear direction and the left-right direction are described as follows unless otherwise specified. That is, the forward travel direction during the aircraft's work travel is `` front '', the forward travel direction is `` rear '', the direction corresponding to the right side based on the forward posture in the front-rear direction is `` right '', Similarly, the direction corresponding to the left side is “left”.

〔overall structure〕
FIG. 1 and FIG. 2 show a riding type rice transplanter which is an example of a paddy field working machine.
The riding type rice transplanter includes a self-propelled machine body 1 (corresponding to a traveling machine body) in which a body frame 10 is supported by a pair of left and right front wheels 11F and a pair of left and right rear wheels 11R that can be steered. 1 is connected to a seedling planting device 2 (corresponding to a working device) which can be moved up and down through a link mechanism 12 including a lifting cylinder 13.
The self-propelled airframe 1 is provided with the prime mover 3 in a state where the engine 30 is accommodated in the hood 3 </ b> A while being positioned on the front side. At the rear part of the self-propelled machine body 1, a fertilizer application device 4 as a granular material supply device is provided. A boarding operation unit 5 including a driver's seat 50 and a steering handle 51 is disposed within the distance between the driving unit 3 and the fertilizer application device 4 in the front-rear direction.

In the prime mover 3, as shown in FIG. Inside the bonnet 3A, the engine 30 is arranged in a horizontal posture with a crankshaft (not shown) oriented sideways, a radiator 31 is arranged on the right end side which is one end side in the left-right direction, and the left end on the other end A muffler 32 is disposed in the part.
Although not shown, an output pulley and a transmission belt are disposed on the left end side of the engine 30, and a speed change mechanism in the transmission case 33 located behind the engine 30 via these transmission means. Engine power is transmitted to (not shown).

  The power shifted in the transmission case 33 is transmitted to the rear axle case 35 via the front wheels 11F and the transmission shaft 34. Thereafter, the power transmitted to the axle case 35 is transmitted to the rear wheel 11R via a rear wheel drive mechanism (not shown). The power transmitted to the rear axle case 35 is also transmitted to the feeding portion 41 of the fertilizer application device 4 via a transmission mechanism (not shown), and is also transmitted to the rear seedling planting device 2 via the power extraction shaft 36. Has been.

In the boarding driving unit 5, a driving unit step 52 is provided between the steering handle 51 and the driving seat 50 on the body frame 10. A step 53 for getting on and off to get on and off from the ground is provided on both the left and right sides of the driving unit step 52. The driving unit step 52 is provided not only between the steering handle 51 and the driving seat 50 but also on both the left and right sides of the bonnet 3A, and is configured to be able to get on and off from the front side of the body.
As shown in FIG. 1 and FIG. 2, a reserve seedling base 14 for standing a spare seedling is erected on the lateral outer side of the operation unit step 52 located on the left and right sides of the bonnet 3 </ b> A. Therefore, the boarding / alighting from the front side of the machine body is performed through the driving unit step 52 between the bonnet 3 </ b> A and the reserve seedling platform 14.

  The fertilizer applicator 4 includes a fertilizer tank 40 that stores powdered fertilizer disposed on the back side of the driver's seat 50, a feeding unit 41 that is disposed below the fertilizer tank 40, and the fertilizer that has been fed out into the seedling planting device 2. And a fertilizer hose 42 to be conveyed toward the groove generator 27 provided in the above. The fertilizer hose 42 is formed of a flexible tube made of a soft resin or the like, and is configured to be elastically deformable with the raising / lowering operation of the seedling planting device 2.

A fertilizer blower 6 is provided at the front lower side of the feeding portion 41 as a supply means for feeding wind for feeding the fertilizer fed from the feeding portion 41 by the fertilizer hose 42.
As shown in FIGS. 2 and 3, the outside air sucked in by the blower 6 is supplied to the lower portions of the feeding portions 41 via the air passages 43 that branch to the left and right. Then, the fertilizer that is fed out and dropped by the feeding unit 41 is sent to the fertilizer hose 42 on the sucked outside air, and is conveyed by wind toward the grooving device 27.

A rear boarding step 54 is provided across the left and right lateral sides and the back of the driver seat 50. The fertilizer applicator 4 is disposed at a position higher than the rear boarding step 54. The rear boarding step 54 is used when the driver boardes the fertilizer in the fertilizer tank 40 or when the mat-like seedling taken out from the reserve seedling base 14 is supplied to the seedling base 20 of the seedling planting device 2. It is configured to be positioned slightly higher than the driving unit step 52 in order to put a foot on the vehicle.
The fertilizer application blower 6 is disposed below the rear boarding step 54 within the space between the driver's seat 50 and the fertilizer application device 4 in the front-rear direction. The outside air sucked by the blower 6 passes through the rear boarding step 54 and is sent to the feeding portion 41 side of the upper fertilizer application 4 and is used as the conveying air.

The seedling planting device 2 includes an eight-row planting type seedling platform 20 and a planting device 21 capable of planting eight seedlings, and mat-shaped seedlings placed on the seedling platform 20 are Each strip is separated by a planting claw 21a of the planting device 21 and planted in a field.
This seedling planting device 2 is provided with a feed case 22 to which the power of the engine 30 is transmitted from the self-propelled machine body 1 side via a power take-off shaft 37 at a central position in the left-right direction. The feed case 22 is fixedly supported at the center position of the tool bar 23 extending over almost the entire length of the seedling planting device 2 in the left-right direction. The front end side of the four planting transmission cases 24 for transmitting power to the planting device 21 is connected and fixed to the rear surface side of the tool bar 23 extending to the left and right sides of the feed case 22 and extends rearward. The planting device 21 is equipped on both the left and right sides of the rear end.

The seedling platform 20 is configured to reciprocate horizontally in the left-right direction by a lateral feed mechanism (not shown) provided in the feed case 22. The reciprocating lateral movement range of the seedling platform 20 is a range corresponding to the width in the left-right direction of the seedling placement unit 20a on which one row of seedlings on the seedling platform 20 is placed.
The lateral width of the sliding plate 25 that is positioned on the lower end side of the seedling platform 20 and guides the lateral movement of the seedling platform 20 is determined by the sum of the lateral width of the seedling platform 20 and its reciprocating lateral movement range. Is also set larger. A guard member 28 for avoiding contact of other objects from the lateral side with respect to the seedling planting device 2 is provided at a laterally outer side position of the sliding plate 25.
Further, at the bottom of the seedling planting device 2, a leveling float 26 that touches and slides on the mud surface during seedling planting work is arranged, and the groover 27 is attached to the leveling float 26.

[Blower]
The fertilizer application blower 6 used as a supply means for conveying wind for conveying the fertilizer fed from the feeding section 41 with the fertilizer hose 42 is configured as follows.
That is, as shown in FIGS. 1 to 3, the blower 6 is fixed at a proper position on the body frame 10 below the rear boarding step 54 at a substantially central position in the left-right direction of the self-propelled body 1. Has been. The outside air sucked in by the blower 6 is configured to be fed into the air blowing path 43 that branches right and left below the feeding portion 41 of the fertilizer application device 4.

As shown in FIGS. 3 to 5, the blower 6 incorporates a blower fan 60 that is driven to rotate about a rotation axis p1 along the left-right direction, and has a substantially circular outer peripheral shape when viewed in the direction of the rotation axis p1. A blower case 61 is provided. The blower case 61 is provided with a suction port portion 62 for sucking outside air in a direction along the rotation axis p <b> 1 and a blowout port portion 63 for blowing out along a tangential direction with respect to the outer peripheral locus of the blower fan 60.
The built-in blower fan 60 is constituted by a turbo-type or sirocco-type centrifugal fan that sucks outside air from the direction along the rotational axis p1 and discharges it in the tangential direction.

A blower motor 64 is attached to the outer surface of the case opposite to the side where the suction port portion 62 of the blower case 61 is provided. A drive shaft 64a of the blower motor 64 is inserted into the blower case 61, and a blower fan 60 is fixed to the drive shaft 64a. Therefore, the blower fan 60 attached to the drive shaft 64a is configured to be rotationally driven in accordance with the rotation of the blower motor 64 configured by an electric motor.
The blow-out port portion 63 of the blower case 61 is directed obliquely upward and rearward so as to supply the conveying air toward the blower passage 43 positioned obliquely rearward and upward of the blower 6.

〔regulator〕
A regulator 65 for stabilizing the drive voltage of the blower motor 64 is incorporated in a drive circuit (not shown) of the blower motor 64 that rotationally drives the blower fan 60.
The regulator 65 includes a heat sink 66 (corresponding to a heat radiating portion) on the heat radiating surface side, and the heat sink 66 is disposed so as to come into contact with the wind flowing through the air passage of the blower 6.

That is, as shown in FIGS. 3 to 5, the mounting bracket 16 is welded and fixed to the support column 15 standing near the suction port 62 of the blower case 61 on the upper surface side of the body frame 10. A regulator 65 is attached to 16 using a set bolt 17.
The positional relationship between the suction port 62 and the regulator 65 is arranged such that the regulator 65 exists in the air path of the wind that flows into the suction port 62 by the rotation of the blower fan 60.

Specifically, as shown in FIGS. 3 and 4, the blower fan 60 is positioned immediately before the suction port 62 in the direction along the rotation axis p <b> 1, and when viewed in the direction along the rotation axis p <b> 1, A regulator 65 exists so as to overlap the opening surface of the suction port portion 62.
At this time, the central portion of the heat sink 66 in the vertical direction is at a height position that is approximately the same as the position (the position where the rotation axis p1 in FIG. 4 is present) that is the opening center of the suction port portion 62. The entirety of the regulator 65 including it is located on the front side (left side in FIG. 4) of the position that is the opening center of the suction port portion 62.

  The blower fan 60 rotates counterclockwise as shown by an arrow in FIG. 4 to suck outside air and send it to the fertilizer application device 4 side. On the right side in FIG. 4, there is no regulator 65 including the heat sink 66. Therefore, in the blowing direction along the circumferential direction of the blower fan 60, the passage resistance with respect to the sucked airflow is less than the other portions at a place farthest from the blowing port portion 63 and the passage is narrow and easily generates negative pressure. can do. As a result, a strong suction action is likely to occur, and the outside air can be efficiently sucked in a place where a long-distance feeding action is likely to be performed, and the blower fan 60 has a small loss due to an increase in passage resistance. Easy to do.

Further, the cooling fins 66a of the heat sink 66 are arranged so that the longitudinal direction thereof is along the direction of the rotation axis p1 of the blower fan 60, so that the resistance to the wind flow by the blower fan 60 is kept as small as possible. Easy to dissipate heat over long distances.
The heat sink 66 is made of a member having high thermal conductivity such as aluminum or copper.

[Other Embodiment 1]
In the above embodiment, the regulator 65 including the heat sink 66 is illustrated as having a structure in which the regulator 65 including the heat sink 66 is provided on the outer side of the blower case 61 below the rear boarding step 54, but is not limited thereto.
For example, as shown in FIG. 6, a regulator 65 including a heat sink 66 may be provided in the blower case 61.
In this structure, the regulator 65 including the heat sink 66 is disposed above the suction port portion 62 in the blower case 61. However, the present invention is not limited to this, and the opening of the suction port portion 62 is not limited thereto. The blower fan 60 in the blower case 61 may be positioned inside the suction port portion 62 on the front side of the center position, positioned inside the blowout port portion 63 instead of the suction port portion 62 side, or You may select and provide suitable locations, such as the outer peripheral surface and side surface of the location currently equipped.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above embodiment, the regulator 65 including the heat sink 66 as a whole is illustrated as being in contact with the wind flowing through the air passage of the blower 6, but is not limited thereto.
For example, only the heat sink 66 portion as the heat radiating portion of the regulator 65 is disposed so as to come into contact with the wind flowing through the air passage of the blower 6, and the other portions are disposed at positions away from the air passage of the blower 6. It may be.
In this case, the semiconductor part having the regulator drive circuit other than the heat sink 66 part is not limited to a state in which the semiconductor drive part is integrally joined to the heat sink 66 part. It may be linked so that heat exchange is possible by using a water cooling device.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the above-described embodiment, the heat dissipation portion of the regulator 65 is illustrated as having a structure including only the heat sink 66, but is not limited thereto.
For example, the regulator 65 is made of a semiconductor having a regulator drive circuit, and the heat sink 66 is not provided, and the heat radiating portion is formed only by the heat radiating surface of the semiconductor. You may arrange | position so that it may contact.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the above embodiment, the heat dissipation portion of the regulator 65 has been illustrated as having a structure including the heat sink 66, but is not limited thereto.
For example, as shown in FIG. 7, the auxiliary fan 67 may be additionally used in addition to the heat sink 66. In this case, the cooling effect can be further improved by providing the auxiliary fan 67.
Other configurations may be the same as those in the above-described embodiment.

  The granular material supply apparatus according to the present invention can be used not only for fertilizer conveyance in the fertilizer application apparatus 4 of the riding type rice transplanter, but also when conveying chemicals and seeds, such as a direct sowing machine and other paddy field machines. It can be employed in various devices for conveying powder particles by wind.

6 Blower 60 Blower Fan 61 Blower Case 62 Suction Port 63 Blower Port 64 Blower Motor 65 Regulator 66 Heat Sink (Heat Dissipator)
66a Cooling fin

Claims (3)

A blower for introducing wind for wind conveyance from the suction port provided in the blower case to the supply path of the granular material;
A blower motor that rotationally drives the blower;
A regulator provided in the drive circuit of the blower motor,
The blower motor is provided on one side across a blower fan built in the blower case;
The granular material supply apparatus provided in the opposite side to the side in which the said blower motor is located on both sides of the said blower fan so that the heat radiating part of the said regulator may contact the wind which flows through the wind path of the said blower . The granular material supply apparatus according to claim 1 , wherein the heat dissipating part is installed in an air passage in a blower case that houses the blower. The heat radiating portion is provided with a heat sink, the cooling fins so as to face said air passage, the cooling according to claim 1 or 2 longitudinal fins in which is disposed along the flow direction of the wind The granular material supply apparatus of description.

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