JP4271933B2 - Speed sprayer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention pumps a chemical solution in a chemical solution tank installed in a vehicle body to a nozzle disposed in the rear portion of the vehicle body, and sends a chemical solution blown out from the nozzle to the outside from a blower disposed in the rear portion of the vehicle body. The present invention relates to a speed sprayer that is made to diffuse by an air flow blown toward the head.
[0002]
[Prior art]
Generally, a speed sprayer pumps a chemical solution in a chemical tank installed in the vehicle body to a nozzle disposed at the rear of the vehicle with a pump, and arranges a chemical solution blown outward from the nozzle at the rear of the vehicle body. It diffuses by the air flow blown out to the outside from the blower that has been made, so that it spreads efficiently over a wide area while running in an agricultural field such as an orchard.
[0003]
More specifically, for example, as described in Patent Documents 1 and 2 below, the blower is usually a fan (blade wheel), a wind tunnel, and a rectifying drum fixedly held in the wind tunnel, An internal combustion engine such as a diesel engine and a chemical tank are mounted on the front side of the blower, and a power distribution / speed reducer and a fan shaft support outer casing are integrally attached to the internal combustion engine, The power of the internal combustion engine is transmitted to the fan via a relatively long fan shaft that is rotatably supported by the power distribution / reduction gear and the fan shaft support outer casing.
[0004]
In such a speed sprayer, the internal combustion engine, which is a vibration source, is interposed via a vibration isolation member in order to prevent chatter noise, vibration, and the like that cause discomfort to the driver in a cabin or the like provided at the front portion of the vehicle body. The air blower (of the wind tunnel) is directly fixed to the chassis frame without a vibration isolation member.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 61-25897 (pages 1 and 2, FIGS. 1 to 3)
[Patent Document 2]
JP 2002-234378 A (pages 1 to 4, FIGS. 3 to 8)
[0006]
[Problems to be solved by the invention]
In the conventional speed sprayer as described above, the fan shaft and the outer housing for supporting the fan shaft that supports the fan shaft are substantially cantilevered by the internal combustion engine. The fan attached to the free end is easy to swing, and the internal combustion engine is supported in a state of being floated by a vibration isolating member, but the blower (the wind tunnel) is fixed to the chassis frame. Therefore, if the clearance (chip clearance) between the outer periphery of the fan and the inner periphery of the wind tunnel is too small, the fan and the wind tunnel may come into contact with each other and be damaged. When the clearance between the outer periphery of the fan and the wind tunnel is increased, there is a problem that the blowing performance is deteriorated.
[0007]
As one measure for solving such a problem, the fan side end portion in the fan shaft support outer casing is connected and supported by the support member to the wind tunnel (the rectifying drum fixedly supported inside), It is conceivable that the fan shaft support outer casing is supported at both ends by the internal combustion engine side. However, if the fan shaft support outer casing is supported at both ends by the internal combustion engine and the wind tunnel in this way, the fan shaft swing can be suppressed, but the fan shaft support outer casing and the support member External force is applied due to vibrations of the internal combustion engine and the blower, and when the blower is started, the fan shaft support outer casing and the internal combustion engine are twisted in a direction opposite to the rotation of the fan. Could be damaged.
[0008]
The present invention has been made to solve the conventional problems as described above. The object of the present invention is to effectively suppress vibrations propagating from the internal combustion engine and the blower to the vehicle body, and to improve the fan shaft. The vibration can be suppressed, and the required air blowing performance can be secured without unnecessarily increasing the clearance between the outer periphery of the fan and the wind tunnel. In addition, the internal combustion engine, the fan shaft support outer casing, and the fan can be twisted. An object of the present invention is to provide a speed sprayer in which an undesired external force such as a force is hardly applied.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the speed sprayer according to the present invention basically has a blower comprising a fan, a wind tunnel, and a rectifying cylinder fixedly held in the wind tunnel at the rear of the vehicle body. And an internal combustion engine and a chemical tank are mounted on the front side of the blower, a fan shaft support outer casing is integrally attached to the internal combustion engine, and the power of the internal combustion engine is supplied to the fan shaft support outer casing. Is transmitted to the fan via a fan shaft rotatably supported by the fan.
[0010]
The internal combustion engine and the wind tunnel are each supported by a chassis frame via a vibration isolating member, and a support portion provided on the fan side of the fan shaft support outer casing includes an outer periphery of the support portion. Relative displacement absorbing means for absorbing and supporting the relative displacement is mounted, and the support portion is supported by the wind tunnel via the relative displacement absorbing means and the outer casing support member.
[0011]
The relative displacement absorbing means is preferably constituted by a bush or a plurality of divided bearing members having a bearing surface having an arcuate cross section.
Further, the internal combustion engine is preferably supported by a pair of front and rear vibration isolating members in a pair of left and right, and one of the two sets of vibration isolating members is left and right in a C shape in a rear view. The other anti-vibration member is arranged to be inclined in the front-rear direction. The wind tunnel is preferably supported by vibration-isolating members that make a pair on the left and right, and the vibration-isolating members that make a pair on the left and right are arranged in a C shape in a rear view.
[0012]
In a preferred aspect of the speed sprayer according to the present invention configured as described above, the internal combustion engine and the blower (the wind tunnel) are supported by the chassis frame via vibration isolation members, respectively. The internal combustion engine, the fan shaft support outer casing, and the blower are integrally vibration-isolated by vibration isolation members disposed on the engine side and the fan side. Therefore, it is possible to effectively suppress vibration propagating from the internal combustion engine and the blower to the vehicle body.
[0013]
In addition, since the support portion provided on the fan side in the fan shaft support outer casing is supported by the wind tunnel via the relative displacement absorbing means and the outer casing support member, the fan shaft can be prevented from shaking. The required air blowing performance can be ensured without unnecessarily increasing the clearance between the outer periphery of the fan and the wind tunnel, and further, when the blower is started, the blower is opposite to the rotation of the fan. Even when twisted in the direction, the twist is absorbed by the relative displacement absorbing means interposed between the fan shaft supporting outer casing and the outer casing supporting member. A phenomenon in which the internal combustion engine is twisted in a direction opposite to the rotation of the fan is effectively prevented, and a situation in which each component member is damaged can be avoided reasonably.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic left side view showing a first embodiment of a speed sprayer according to the present invention.
[0015]
In the speed sprayer 1 of the illustrated embodiment, a pair of left and right front wheels 12 and 12 are disposed at the lower part on the front side of the vehicle body 3, and a pair of left and right rear wheels 14 and 14 are disposed at the lower part on the rear side of the vehicle body 3. The cabin 2 is disposed on the front side of the vehicle body 3, a chemical liquid tank 4 having a semicircular cross section is installed in the center, and an engine room 5 is formed immediately after the chemical liquid tank 4. Inside, a diesel-type internal combustion engine 10 that serves both for driving, for driving a blower, and for driving accessories such as a chemical liquid supply pump 9 is housed.
[0016]
An axial flow comprising a fan 22, a wind tunnel 24, and a rectifying drum 26 having a fixed rectifying plate 27 fixedly held in the wind tunnel 24 at the rear part of the engine room 5, that is, at the rearmost part of the vehicle body 3. The blower 20 is disposed, and a required number of chemical spray nozzles 6 are disposed at the arc-shaped air outlet 7 provided at the front portion of the blower 20 so as to face the outside. Further, the chemical liquid supply pump 9 for supplying the chemical liquid to the nozzle 6 by pressure is disposed in the cabin 2, for example, and the chemical liquid sprayed to the outside from the nozzle 6 blows out from the air outlet 7 to the outside. It is diffused by the air flow from the blower 20 so that the spraying operation of the chemical solution can be performed while traveling in an orchard or the like.
[0017]
In the speed sprayer 1 of the present embodiment, as shown in FIGS. 2 and 3, a power distribution / reduction gear 30 and a stepped cylindrical fan shaft support outer casing 35 are provided at the rear of the internal combustion engine 10. The diameter front end portion 35b is integrally attached. The power of the internal combustion engine 10 is transmitted from the output shaft 11 to the electromagnetic clutch 32 through gears 16 and 17, and the fan shaft 25 rotatably supported in the fan shaft support outer casing 35 from the clutch 32. As a result, the fan 22 attached to the tip of the fan shaft 25 is rotated in the direction indicated by the arrow Q in FIG. 2 (counterclockwise when viewed from the rear). The power distribution / reduction gear 30 decelerates the power of the internal combustion engine 10 by a speed reduction mechanism (not shown) in addition to the blower 20, and is used for traveling and driving auxiliary equipment from the power take-out shaft 33. To distribute as. The small-diameter rear end portion of the outer casing 35 is a cylindrical support portion 35a that supports the vicinity of the front end portion of the fan shaft 25, and the cylindrical support portion 35a, as will be described later, has the wind tunnel 24. It has come to be supported by.
[0018]
The internal combustion engine 10 is supported by the chassis frame 8 via a pair of front and rear vibration isolation members 61, 61, 62, 62 in a pair of left and right, and the wind tunnel 24 of the blower 20 is also supported by the left and right and front and rear. Are supported by the chassis frame 8 via vibration isolating members 71, 72, 71, 72 that make a pair.
[0019]
The left and right pair of anti-vibration members 61, 61, 62, 62 on the internal combustion engine 10 side are arranged between brackets 63-64, 66-67 fixed to the internal combustion engine 10 side and the chassis frame 8 side. The rear vibration isolating members 62 and 62 are arranged symmetrically in a rear-shaped C shape, and the front vibration isolating members 61 and 61 are arranged in the front-rear direction. The anti-vibration members 61, 61, 62, and 62 effectively distribute three-dimensional vibrations in the front-rear, left-right, and up-down directions generated by the internal combustion engine 10. It can be suppressed to.
[0020]
Further, the anti-vibration members 71, 72, 71, 72 that make a pair on the left and right and front and rear on the blower 20 side are a pair of left and right brackets 73 fixed to the wind tunnel 24 side and the chassis frame 8 side of the blower 20. -74 are connected and fixed so as to be sandwiched between the front and rear two pieces, and each of the vibration isolating members 71, 72, 71, 72 is arranged symmetrically in the shape of a rear view, and the blower The vibration generated at 20 can be effectively suppressed.
[0021]
On the other hand, a sliding bearing 40 made of a bush made of polypropylene or the like is externally fitted as a relative displacement absorbing means to the cylindrical support portion 35a provided at the fan 22 side end portion of the fan shaft support outer casing 35. The sliding bearing 40 is supported by the rectifying cylinder 26 (the wind cylinder 24 on which the rectifying cylinder 26 is fixed) via an outer casing support member 45. The outer casing support member 45 includes an inner annular plate 46 whose inner periphery is joined and fixed to the slide bearing 40 by welding, and an outer annular plate whose outer periphery is joined and fixed to the rectifying cylinder 26 by welding or the like. 47 and a plurality of bolts and nuts 48 for fastening and fixing overlapping portions of the inner annular plate 46 and the outer annular plate 47. Therefore, although the wind tunnel 24, the rectifying drum 26, the outer casing support member 45, and the sliding bearing 40 are integrally connected, the fan shaft supporting outer casing 35 is pivoted by the sliding bearing 40. Since they are supported, they are allowed to move back and forth and torsionally (micro-rotation) relative to the shaft support outer casing 35, and the relative displacement is appropriately absorbed. ing.
[0022]
In the speed sprayer 1 of the present embodiment configured as described above, the internal combustion engine 10 and the blower 20 (the wind tunnel 24) are respectively provided with vibration isolating members 61, 61, 62, 62 and 71, 72, 71. , 72 is supported by the chassis frame 8 so that the internal combustion engine 10, the power distribution / reduction gear 30, the fan shaft support outer casing 35, and the blower 20 include the vibration isolation member 61, 61, 62, 62, 71, 72, 71, and 72 are integrally vibrated. Therefore, vibrations that propagate from the internal combustion engine 10 and the blower 20 to the vehicle body 3 can be effectively suppressed.
[0023]
In addition, a cylindrical support portion 35a provided on the fan 22 side in the shaft support outer casing 35 is connected to the rectifying cylinder 26 (the wind tunnel 24) via the sliding bearing 40 and the outer casing support member 45. Since it is supported, the swing of the fan shaft 25 can also be suppressed, the required air blowing performance can be secured without unnecessarily increasing the clearance between the outer periphery of the fan 22 and the wind tunnel 24, and Even when the blower 20 is twisted in the direction opposite to the rotation direction Q when the blower 20 is started up, the twist is interposed between the fan shaft support outer casing 35 and the outer casing support member 45. Therefore, the fan shaft support outer casing 35 and the internal combustion engine 10 are effectively prevented from being twisted in the direction opposite to the rotation direction Q of the fan 22. Before Situation in the components from being damaged can be rationally avoided.
[0024]
4, 5 and 6 show a second embodiment of the speed sprayer according to the present invention. In the present embodiment, the configuration of the relative displacement absorbing means and the outer casing support member is different from that of the first embodiment, and the other parts are substantially the same. Therefore, the same components as those of the first embodiment are used. Are denoted by the same reference numerals and redundant description is omitted, and differences will be described below.
[0025]
In the present embodiment, the relative displacement absorbing means is constituted by three split bearing members 51, 52, and 53 made of polypropylene or the like having bearing surfaces 50a having an arcuate cross section arranged at intervals of 120 °. The cylindrical support portion 35a of the fan shaft support outer casing 35 is supported substantially at three points so as to absorb relative displacement. Each of the split bearing members 51, 52, 53 can be moved in a direction toward the rotation axis O of the fan shaft 25 by a screw type position adjusting mechanism 80 provided on the outer casing support member 55. The surface 50a is slidably contactable with the cylindrical support portion 35a of the fan shaft support outer casing 35. More specifically, the outer casing support member 55 includes an inner annular plate 56, an outer cutout annular plate 57 having chamfered portions 57a formed on the upper, lower, left, and right sides, and the outer periphery of which is joined and fixed to the rectifying cylinder 26 by welding or the like. , And a plurality of bolts and nuts 58 for tightening and fixing overlapping portions of the inner annular plate 56 and the outer notched annular plate 57.
[0026]
The screw type position adjusting mechanism 80 includes an L-shaped plate 84 whose lower side (bottom side) is screwed to the split bearing members 51, 52, 53, and a hole fixed to the outer notch annular plate 57. A stopper 81 and a screw rod 82 having a rear end inserted into the stopper 81 with a hole and screwed into a nut 88 fixed to the lower side of the L-shaped plate 85 by welding or the like. And an adjusting nut 87 screwed to the rear end side of the screw rod 82, and elongated holes 86, 86 are formed on the left and right sides of the vertical side portion of the L-shaped plate 84 in parallel with the screw rod 82. The inner annular plate 56 and the L-shaped plate 85 are fastened and fixed by bolts and nuts 85 inserted into the elongated holes 86 and 86.
[0027]
In the screw type position adjusting mechanism 80, in a state where the bolt-nut 85 is loosened, the adjusting screw 87 is turned to adjust the protruding length of the screw rod 82 from the stopper 81, and the bearing surface 50a is made to be cylindrical. The split bearing members 51, 52, and 53 are assembled and positioned by tightening the bolt-nut 85 in this state so as to be slidably contactable with the shape support portion 35a.
[0028]
In the speed sprayer 1 of the present embodiment configured as described above, in addition to obtaining substantially the same operational effects as in the first embodiment, the three split bearing members 51 and 52 serve as relative displacement absorbing means. 53, and a screw-type position adjusting mechanism 80 is attached to the outer casing support member 55. Therefore, the center of the rectifying cylinder 26 and the fan shaft supporting outer casing 35 is caused by processing / assembly errors. Even if the position is slightly deviated, the deviation or the like can be absorbed. Therefore, the divided bearing members 51, 52, 53 and the outer casing support member 55 can be assembled easily and accurately.
[0029]
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be used without departing from the spirit of the invention described in the claims. It can be changed.
[0030]
【The invention's effect】
As can be understood from the above description, the speed sprayer according to the present invention includes an internal combustion engine and a blower (wind tunnel) supported by a chassis frame via vibration isolation members, and a fan shaft support outer casing. Since the support portion provided on the fan side is supported by the wind tunnel via the relative displacement absorbing means and the outer casing support member, vibration propagating from the internal combustion engine and the blower to the vehicle body can be effectively suppressed. The fan shaft can be prevented from swinging, and the required air blowing performance can be secured without unnecessarily increasing the clearance between the outer periphery of the fan and the wind tunnel. Further, the internal combustion engine, the fan shaft support outer casing, An undesired external force such as a twisting force can be hardly applied to the blower or the like.
[Brief description of the drawings]
FIG. 1 is a schematic left side view of an embodiment of a speed sprayer according to the present invention.
2 is a partially cutaway enlarged view of the internal combustion engine / blower portion of the speed sprayer shown in FIG. 1 with covers removed.
3 is a schematic rear view of the speed sprayer shown in FIG. 1. FIG.
FIG. 4 is a partially cutaway enlarged view corresponding to FIG. 2, showing an internal combustion engine / blower portion in a second embodiment of the speed sprayer according to the present invention.
5 is a cross-sectional view taken along arrow VV in FIG. 4;
FIG. 6 is a partial rear schematic rear view of the speed sprayer of the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Speed sprayer 3 Car body 4 Chemical solution tank 8 Chassis frame 10 Internal combustion engine 20 Blower 22 Fan 24 Wind tunnel 25 Fan shaft 26 Rectification drum 35 Fan shaft support outer casing 35a support part 40 Relative displacement absorption means (bush)
45 Outer casing support member 50a Bearing surfaces 51, 52, 53 ... Relative displacement absorbing means (divided bearing member)
55 Outer casing support members 61, 62, 71, 72 ... Vibration isolation members

Claims (5)

A blower (20) comprising a fan (22), a wind tunnel (24), and a rectifying drum (26) fixed and held in the wind tunnel (24) is disposed at the rearmost part of the vehicle body (3). In addition, an internal combustion engine (10) and a chemical tank (4) are mounted on the front side of the blower (20), and a fan shaft support outer casing (35) is integrally attached to the internal combustion engine (10). A speed sprayer (1) adapted to transmit the power of the engine (10) to the fan (22) via a fan shaft (25) rotatably supported by the fan shaft support outer casing (35). Because
The internal combustion engine (10) and the wind tunnel (24) are supported by the chassis frame (8) via vibration-proof members (61, 62, 71, 72), respectively, and the fan shaft support outer casing (35). ) In the cylindrical support portion (35a) provided on the fan (22) side, the relative displacement absorbing means (40, 51 ) for supporting the outer periphery of the support portion (35a) by absorbing its relative displacement. , 52, 53) and the support portion (35a ) is attached to the wind tunnel (24) via the relative displacement absorbing means (40, 51 , 52, 53) and the outer casing support member (45, 55). Speed sprayer characterized by being supported. The speed sprayer according to claim 1, wherein the relative displacement absorbing means is a bush (40). The speed sprayer according to claim 1, wherein the relative displacement absorbing member is constituted by a plurality of split bearing members (51, 52, 53) having a bearing surface (50a) having an arcuate cross section. The internal combustion engine (10) is supported by a pair of left and right vibration isolation members (61, 61, 62, 62) in a pair of left and right, and one of the two sets of vibration isolation members. (62, 62) are arranged symmetrically in a rear-faced C-shape, and the other vibration isolating member (61, 61) is arranged inclined in the front-rear direction. The speed sprayer according to any one of 1 to 3. The wind tunnel (24) is supported by a vibration isolating member (71, 72, 71, 72) paired on the left and right, and the vibration isolating member (71, 72, 71, 72) paired on the left and right is The speed sprayer according to any one of claims 1 to 4, wherein the speed sprayer is arranged in a C shape in a rear view.

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