JP3734917B2 - Traveling power spreader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a traveling power spreader configured to perform a spraying operation of powdery or liquid sprayed materials such as agricultural chemicals, fertilizers, and seeds while traveling on a shore.
[0002]
[Prior art]
As a power spreader used for paddy field control, fertilization, etc., conventionally, a backpack type is generally used, but this backpack type power spreader can be used only for a body part such as a storage tank, a blower and a prime mover. Although it is quite heavy, in addition to that, the weight of sprayed materials such as pesticides, fertilizers and seeds stored in the storage tank is also added, so you can carry it while walking on the shores and fields with poor scaffolding It is extremely hard work to carry out spraying work, and considering the recent aging of farmers, it is desirable to be able to carry out spraying work while mounting a storage tank, blower and prime mover on a carriage .
[0003]
In order to meet such a demand, for example, as seen in Japanese Utility Model Publication No. 4-50929, a base frame (cart) equipped with wheels has a storage tank for storing scattered matter, and a storage tank in the storage tank. A centrifugal blower that generates conveying air for spraying the spatter and an internal combustion engine as a prime mover that is a driving source of the centrifugal blower are mounted and held, and a push handle is provided, and the push handle is A traveling type in which the blower is driven by the internal combustion engine while being pushed and traveled on uneven rough terrain such as a shore and spraying work is performed through a tubular spraying tool such as a direct injection pipe connected to the blower. Power spreaders have been proposed.
[0004]
[Problems to be solved by the invention]
However, in the conventional traveling power spreader as described above, a heavy load such as a centrifugal blower, an internal combustion engine as a prime mover, or a storage tank is mounted and held on a base frame provided with wheels as it is. As a result, the overall height of the loaded heavy parts (parts consisting of storage tanks, internal combustion engines, blowers, etc.) increases and the position of the center of gravity also increases, resulting in poor posture stability. When traveling on rough rough terrain, it is difficult to control the aircraft, and it is prone to tilting, falling, falling.
[0005]
More specifically, when the conventional traveling power spreader is driven on uneven terrain such as a rough ridge, the wheel picks up irregularities on the uneven terrain, so that the base frame and the mounted heavy load part are only up and down. Instead, the center of gravity position fluctuates greatly from side to side, making it difficult to balance the left and right. The steering wheel is taken in an undesired direction, and the wheel falls from the shore to the irrigation channel in the field, etc., the stability of the aircraft is impaired and the tilt cannot be suppressed, and it falls down in severe cases Problems arise.
[0006]
Further, when the body swings left and right, a tubular spraying tool such as a direct injection pipe connected to the discharge port of the blower also swings left and right together. In this case, since the nozzle part (tip part) of the tubular spreader is usually positioned so as to protrude laterally from the machine body, if it swings to the left and right, the spray emission angle of the sprayed material with respect to the horizontal plane is Therefore, there is a problem in that the spraying density of the sprayed material on the field crops and the like varies, resulting in so-called spraying unevenness and a decrease in spraying performance.
[0007]
The present invention has been made in view of the above-described problems. The object of the present invention is to allow the steering wheel to swing in the left-right direction even when traveling on rough terrain such as a ridge. It is possible to improve posture stability and running stability by reducing the amount of spraying, and to reduce spraying unevenness and improve spraying performance, so that spraying work can be performed easily, properly and efficiently. It is to provide a traveling power spreader.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the traveling power spreader according to the present invention basically has main wheels arranged in a straight line in the front-rear direction on a base frame having a swinging support shaft extending in the front-rear direction. A steering handle is provided, a swing frame is supported on the swing support shaft so as to be swingable up and down, and a side wheel is disposed on one side of the swing frame in a lateral direction with respect to a moving direction of the machine body. In addition, a storage tank in which the spatter is stored, a blower that generates a conveying wind for spraying the spatter in the storage tank, and a prime mover that is a drive source of the blower are mounted on the swing frame. It has a loaded heavy load portion that is held.
[0009]
Then, the swing frame is loaded in the direction of pressing the side vehicle against the ground by the mounted heavy load portion, and is a flexible bent jet that can be expanded and contracted and has an appropriate elastic restoring force at the discharge port of the blower. A tubular spraying tool such as a direct injection tube is connected to the base frame in a state of projecting sideways through the tube, and the tubular spraying accompanying vertical swing with the swing support shaft as a swing center axis is connected to the base frame. A support tool provided with a pipe fixture for fixing and holding the direct injection pipe is disposed on the base frame side so as to prevent the movement and tilting of the direct injection pipe in the tool in the longitudinal direction. Yes.
[0010]
In a preferred aspect of the present invention, the tube fixing tool is fitted to a holding plate and a support rod constituting the support tool so as to be rotatable and slidable, and is attached and fixed at an arbitrary angle around its axis. A holding metal fitting, and a ring-shaped tightening metal fitting that is fixedly attached to the holding plate and is fitted onto the direct injection pipe via an anti-slip means.
[0011]
In the traveling power spreader according to the present invention configured as described above, a storage tank, a blower, a prime mover, and the like are mounted and held on a swing support shaft provided in a base frame on which a steering handle and main wheels are disposed. Since the swing frame on which the side wheel is disposed is supported so as to swing up and down, when the main wheel picks up the unevenness of the rough terrain when traveling on rough terrain such as an uneven shore, Although the steering handle disposed on the frame slightly swings to the left and right, the mounted heavy parts such as the storage tank, the blower, and the prime mover can swing up and down independently of the base frame, in other words, are floating supported. Therefore, it does not affect the left and right deflection of the main wheel, and therefore does not lead to a large deflection that makes it difficult to control the steering handle.
[0012]
In other words, when the side vehicle disposed on the swing frame side picks up unevenness on the rough terrain, the mounted heavy load portion swings left and right. In this case, the mounted heavy load portion is separated from the side vehicle and the base body. Since it is supported by both the frame (main wheels), the fluctuation of the center of gravity is softened and the stability is increased compared with the case where only the main wheels are supported, and the weight of the mounted heavy load part is shaken. Is difficult to be transmitted to the steering wheel side.
[0013]
Therefore, even when traveling on rough terrain such as a shore, it is easy to control the aircraft by maneuvering with the steering handle, and the attitude stability and running stability are increased, making it difficult to cause a fall, fall, etc. Thus, the spraying work can be performed easily, properly and efficiently.
[0014]
In addition to the above, since the direct injection pipe of the tubular spraying tool is fixed and held in a specific manner by the pipe fixing tool of the support tool, the base frame or the blower is mounted when traveling on rough terrain. Even if the mounted heavy load portion is swung up and down, since the direct injection tube is fixedly held on the base frame side, the deflection of the mounted heavy load portion causes the flexible bent tube portion to expand and contract. The position and the inclination angle in the longitudinal direction (left-right direction) of the direct injection tube hardly change.
[0015]
Therefore, even when traveling on rough terrain, the spray emission angle with respect to the horizontal plane of the spray sprayed and discharged from the nozzle of the direct spray pipe of the tubular spray tool hardly changes, and as a result, the spray spray density for the crops etc. in the field Is made uniform, dispersion unevenness is reduced, and dispersion performance is improved.
[0016]
In addition, a bellows-shaped flexure tube is interposed between the heavy load part and the direct injection tube, so even if there is an extreme dent on the slope of the shore, the change in the center of gravity is alleviated. This increases posture stability and running stability.
In addition, by using a relatively long bending tube, the change in the amount of sprayed and discharged sprayed matter can be minimized.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 3 are a plan view, a left side view, and a rear view showing an embodiment of a traveling power spreader according to the present invention.
[0018]
The traveling power spreader 10 of the illustrated embodiment is an example suitable for a dust-dispersed spraying operation, and basically has a central axis MM extending in the longitudinal direction (horizontal direction) of the aircraft. Before and after the base frame 2 having the swing support shaft 10, the idle front wheel 6 made of a pneumatic tire as a main wheel and the wide driving rear wheel 7 with a rubber lug are straight forward and backward so that the vehicle can stably travel on the shore. A swing frame having a tubular member 51 loosely fitted on the swing support shaft 10 is disposed on the rear side, and a pair of left and right handles 31 and 32 are disposed as steering handles at the rear thereof. 50 is supported so as to be able to swing up and down, and the left side of the swing frame 50 in the left-right direction with respect to the traveling direction of the body, in other words, between the front wheel 6 and the rear wheel 7 and as viewed from the rear. Front wheel 6 A side tank 70 is disposed at a position protruding leftward from the rear wheel 7 and the swing frame 50 is a storage tank 75 for storing scattered matter, which is the loaded heavy article portion 5, and the storage tank 75. Centrifugal blower 65 for generating conveying air for spraying the spatter in tank 75, an air-cooled four-cycle gasoline engine 60 (hereinafter simply referred to as engine 60) as a prime mover serving as a drive source for centrifugal blower 65, and the like Is held.
[0019]
More specifically, the upper side portion 11a is fixedly attached to the front end portion of the swing support shaft 10 provided in the base frame 2 via a mounting member 18 that is detachably fixed by a pin 19 (FIG. 4). The base side trapezoidal ring-shaped member 11 as shown in the rear view in FIG. 5 and the lower side portion 11b of the trapezoidal ring-shaped member 11 are connected and fixed in parallel to each other via a core material (not shown). The pair of left and right front parallel members 13 and 13 projecting forward, the pair of left and right rising plates 15 and 15 connected and fixed to the front ends of the front parallel members 13 and 13, and the rising plates 15 , 15 are connected to each other, and the front wheel 6 is pivoted between the pair of left and right upright plates 15, 15. The swing support shaft 1 constituting the main part of the support 90 Lower end of the front side portion 91a of the extending to exert bridge the front and rear body in the upper schematic sideways C-shaped support rod 91 (see FIG. 2) is fixedly held.
[0020]
In addition, the rear end portion of the swinging support shaft 10 can be understood by referring to FIG. 4 in addition to FIGS. 1 to 3, a tubular mounting member 25, a holding member 26, a pair of left and right side plates 21, 22, The handles 31 and 32 are connected and fixed in a non-rotating state by pins 29 and 29 through an attachment holding plate 23 and the like, and the rear wheel 7 is pivoted between the pair of left and right side plates 21 and 22, A transmission 40 is held and fixed via a pair of left and right support plates 24 and 24.
[0021]
On the other hand, the swing frame 50 has the tubular member 51 in addition to the tubular member 51 loosely fitted on the swing support shaft 10, as can be understood by referring to FIG. 5 in addition to FIGS. A box-type support member 52 having a pair of front and rear holes 52a and 52b through which the member 51 is inserted and fixed and having a lower surface opened, and a vertical side portion 54a attached and fixed to the left side plate portion of the box-type support member 52. The L-shaped holding member 54 having an L-shape and an upper side 55a are attached and fixed to the upper surface of the front end of the tubular member 51 by a locking tool 55A or the like, and the lower-side notch facing ends 55b and 55c are the L-shaped holding member 54. A swing-side trapezoidal ring-shaped member 55 connected and fixed to each other via a core member (not shown), and a required number of fan holding brackets 66 and 66 held and fixed to the lower side portion 54b of the L-shaped holding member 54, ... in one Wear has been anti-vibration rubber 67, ... and, attached fixed lower and rear side to the front side lower surface of the tubular member 51 is provided with a box-type cover 69 is open, the.
[0022]
A side vehicle position changing sleeve 14 is attached to the lower surface of the rocking side trapezoidal ring-shaped member 55 in the vicinity of the lower side notch facing end portion 55b, and the side car position changing sleeve 14 is attached to the curved support rod 6A of the side car 70. Is held and fixed by the pin 14A so that the mounting position is variable.
[0023]
Here, as shown in FIG. 3, the side wheel 70 is inclined at a predetermined angle α so as to be inclined outwardly with respect to the front wheel 6 and the rear wheel 7 which are set up along the vertical line gg. Has been. By tilting the side vehicle 70 in this way, as shown in FIG. 6, when the traveling power spreader 1 travels on the uneven shore J, the side vehicle 70 is adjusted to the rice field method. Since the road Q and the road shoulder portion of the shore J are grounded, the running stability is improved, and the side wheel 70 is less likely to fall below the slope Q, and the front wheels 6 and the rear wheels 7 It becomes difficult to be drawn to that side.
[0024]
The engine 60 is mounted and held on the upper surface side of the box-type support member 52 of the swing frame 50, and the required number of the fan holding brackets 66, 66,. In addition to the anti-vibration rubbers 67, 67,... Integrated with the box-type cover 69, the centrifugal blower 65 is sandwiched between the required number of anti-vibration mount members 68, 68,. In order to improve the stability by lowering the position of the center of gravity of the mounted heavy load portion 5, the rotation axis 65c of the fan 65b is along the vertical line gg so that the rotation axis 65c is orthogonal to the swing support shaft 10 when viewed from the side. It is mounted and held on the lower side of the pivot shaft 10 in a vertical state, in other words, in a vertical format.
[0025]
The engine 60 is a combined drive source for the centrifugal blower 65 and the rear wheel 7. That is, the engine 60 is provided with a spraying output shaft 61 (see FIG. 4) projecting downward and a traveling output shaft 62 (see FIGS. 1 and 2) projecting rearward. ing.
[0026]
The power of the output shaft 61 for the spraying work is transmitted to the rotary shaft 65c of the centrifugal blower 65 by a two-stage V-belt winding transmission mechanism 64, and the power transmission is connected and disconnected. A belt tension clutch 63 (see FIG. 1) is attached to the two-stage V-belt winding transmission mechanism 64. The belt tension clutch 63 is turned on by holding a clutch lever 33 (FIG. 2) provided in the vicinity of the grip portion 31a of the left handle 31 via the Bowden cable 37, and is turned off by releasing it. It is made.
[0027]
The power of the engine 60 is transmitted from the travel output shaft 62 to the transmission 40 disposed below the handles 31 and 32 via the universal joint 41, the drive shaft 42, and the universal joint 43. The transmission 40 is transmitted to the rear wheel 7 via a chain-type winding transmission mechanism 45, and this power transmission / disconnection operation is not shown but via a Bowden cable. This is done by operating a clutch lever 34 (FIG. 1) provided in the vicinity of the grip portion 32a of the right handle 32. The power transmission of the engine 60 is performed via the universal joints 41 and 43 because the mounted heavy object portion 5 on the swing frame 50 side including the engine 60 will be described later. This is because power transmission is properly performed in such a manner that force is not applied to the engine 60 or the transmission 40 even if the handle 40, the handles 31, 32, etc. are swung with respect to the base frame 2 side. .
[0028]
On the other hand, on the front upper surface portion of the fan volute case 65a of the centrifugal blower 65, a connection portion 75a of a storage tank 75 for storing sprayed materials such as agricultural chemicals, fertilizers and seeds to be sprayed is connected and supported. When the shutter (not shown) is opened, the sprayed material in the storage tank 75 is dropped downward, rides on the conveying air generated by the centrifugal blower 65, and reaches the end of the fan volute case 65a (right side as viewed from the rear). ) Is sprayed and discharged to the outside via a tubular sprinkler 80 which will be described later connected to the air outlet 65d. In order to adjust the amount of sprayed material (spraying amount) conveyed from the storage tank 75 by the blower 65, as can be understood with reference to FIG. A metering switching scale 78 and a metering lever 76 are provided. By operating the metering lever 76, the opening degree of the shutter in the storage tank connecting portion 75a is switched via the operation rod 77. It is like that.
[0029]
Here, the storage tank 75 and the centrifugal blower 65 mounted and held on the swing frame 50 are arranged slightly offset to the left side of the swing support shaft 10 (the central axis MM thereof), Further, the engine 60 is arranged slightly deviated to the right side from the central axis M, and includes the mounted heavy load portion 5 including the storage tank 75, the centrifugal blower 65, the engine 60, and the like. The center of gravity of the entire swing frame 50 side is always at a position slightly deviated to the left of the central axis MM regardless of the remaining amount of spatter in the storage tank 75. Therefore, the rocking frame 50 is connected to the side by the loaded heavy material portion 5 including the storage tank 75, the centrifugal blower 65, the engine 60, and the like mounted and held on the swing frame 50. Is the load in the direction to press the 70 to ground.
[0030]
However, because the storage tank 75 is arranged slightly deviated to the left of the swing support shaft 10 (center axis MM), depending on the remaining amount of the sprayed matter in the storage tank 75, The load amount in the direction of pressing the side vehicle 70 against the ground by the loaded heavy object portion 5, in other words, the ground pressure of the side vehicle 70 is different. That is, when the spray tank is filled with a lot of sprinkled matter and when it is almost empty, the pressing force of the side vehicle 70 against the ground is different. Although the ground is firmly captured, when it is close to the sky, the side vehicle 70 is likely to float due to the unevenness of the ground and the like, and it becomes difficult to operate the steering wheel and control the vehicle body, and the posture stability and running stability are likely to be impaired.
[0031]
In order to prevent such a problem from occurring, in the present embodiment, as can be understood by referring to FIGS. 4, 5, and 7, the base frame 2 side and the swing frame 50 side are interposed. In order to forcibly bias the side wheel 70 in the direction in which the side wheel 70 is pressed against the ground, the entire swing frame 50 side is attached in a counterclockwise direction when viewed from the rear with the swing support shaft 10 as the swing center axis. As an urging means for oscillating the force, a tension coil spring 56 is stretched.
[0032]
The upper end portion 56a of the tension coil spring 56 is locked to a locking bracket 57 fixed near the right end when viewed from the rear side of the upper side portion 11a of the trapezoidal ring-shaped member 11 on the base frame 2 side. The lower end portion 56b is locked to an L-shaped locking portion 58 fixed in the vicinity of the air outlet 65d of the fan volute case 65a in the centrifugal blower 65 on the swing frame 50 side. 4) stands vertically along the vertical line g-g, and is inclined so as to incline in the rear view (FIGS. 3, 5, and 7), and always includes the centrifugal blower 65. The entire swing frame 50 side including the heavy load portion 5 is biased counterclockwise when viewed from the rear.
[0033]
In addition, as shown in FIG. 6, the loaded heavy object portion 5 and the swing frame 50 can swing and tilt to the left with respect to the vertical line g up to a maximum tilt angle β, for example, about 20 degrees. Has been.
[0034]
The tubular spreader 80 is supported and fixed as follows by a support rod 91 constituting the above-described support tool 90 (see FIG. 2) and a tube fixing tool 9 attached and fixed to the upper side portion 91b.
[0035]
That is, as shown in FIGS. 3 and 6, the tubular spreader 80 is connected to the discharge port 65 d of the centrifugal blower 65 and extends rightward when viewed from the rear. A bellows-shaped flexible bending tube 82 that can be bent and has an appropriate elastic restoring force, and a length that is connected to the bellows-shaped flexible bending tube 82 and extends obliquely to the upper left on the upper side of the mounted heavy load portion 5. A direct injection pipe 84 having a length of about 3 m, and a nozzle hole (tip portion) 84a of the direct injection pipe 84 is disposed so as to protrude to the left from the mounted heavy article portion 5.
[0036]
In addition, the tube fixture 9 of the support 90 disposed on the base frame 2 side is the rocker having the rocking support shaft 10 of the direct injection tube 84 of the tubular sprayer 80 as the rocking center axis. The direct injection pipe 84 is connected and fixed to the support rod 91 in order to prevent the movement and tilting in the longitudinal direction accompanying the vertical swing on the moving frame 50 side. More specifically, as shown in FIGS. 8 and 9, the tube fixture 9 is externally fitted to a rectangular holding plate 92 and an upper side portion 91b of the support rod 91 so as to be slidable. A substantially Ω-shaped inclination angle adjustment holding metal fitting 96 having a C-shaped portion 96a and a pair of attachment portions 96b, 96b, both ends of which are fixedly attached to the plate 92 by bolts 95, 95; One-touch type ring-shaped tightening fittings 93, 93 that are fixedly attached to the upper end portion and the lower end portion and are fitted onto the direct injection tube 84 via a ring-shaped cushion member 99 as an anti-slip means. .
[0037]
As can be clearly understood with reference to FIG. 9, the inclination angle adjustment holding metal fitting 96 has a female thread portion 97 into which a mounting angle adjustment fixing screw 98 is screwed in the thickness direction on the lower surface portion of the C-shaped portion 96 a. At the same time, a rectangular viewing window 101 is formed on one side surface of the support rod 91 so that the tilt angle reference line 100 engraved at a predetermined portion (next to the side) of the upper side portion 91b of the support rod 91 can be seen. An inclination angle scale (for example, 20, 25, 30, 35, 40) 102 with respect to the horizontal plane F is engraved at a predetermined interval along one side of the rectangular observation window 101.
[0038]
Further, the ring-shaped tightening brackets 93, 93 are formed of a material having appropriate elasticity, and as can be understood by referring to FIG. 10, the lower half ring-shaped portion 93A and the lower half ring-shaped portion 93A via a hinge portion 93a. An upper half ring-shaped portion 93B that is rotatably connected to the lower half ring-shaped portion 93A, and an attachment fixing portion 93C that is integrally fixed to the holding plate 92 by welding or the like. A locking projection 93b is provided on the side of the lower half ring-shaped portion 93A on the side opposite to the hinge portion, and a locking projection 93b is elastically fitted and locked on the side of the upper half-ring-shaped portion 93B on the side opposite to the hinge portion. A stop recess 93c is provided, and an opening / closing knob 93d is provided to warp outward from the locking recess 93c toward the tip.
[0039]
In the tube fixture 9 having such a configuration, when the fixing angle adjusting fixing screw 98 is loosened, the inclination angle adjusting holding metal fitting 96 and the holding plate 92 are rotated with respect to the upper side portion 91b of the support rod 91. Therefore, the mounting angle adjusting fixing screw 98 is moved to a position where an arbitrary scale 102, for example, [30] is aligned with the tilt angle reference line 100. When tightened, the inclination angle adjustment holding metal fitting 96 and the holding plate 92, that is, the direct injection pipe 84 are fixedly held at an angle inclined by 30 degrees with respect to the horizontal plane F.
[0040]
Further, with the upper half ring-shaped portions 93B, 93B of the ring-shaped tightening brackets 93, 93 opened, the direct injection pipe 84 is placed on the lower half ring-shaped portions 93A, 93A via the cushion member 99, and accordingly. Thereafter, the direct injection pipe 84 is tightened and fixed by rotating the upper half ring-shaped portions 93B, 93B in the closing direction and fitting and locking the locking concave portion 93c with the locking convex portion 93b. Directional movement and tilting are prevented.
[0041]
Therefore, in the present embodiment, the direct injection tube 84 is fixed at an arbitrary position and an inclination angle by the support 90 provided with the tube fixing device 9 in a state in which the movement and inclination in the longitudinal direction are prevented. Retained.
[0042]
In the traveling power spreader 1 of the present embodiment configured as described above, the swinging support shaft 10 provided on the base frame 2 on which the handles 31 and 32 and the front wheels 6 and the rear wheels 7 are disposed, The swing frame 50 on which the storage tank 75, the blower 65, the engine 60, and the like are mounted and held and the side wheel 70 is disposed is supported so as to be swingable up and down. During leveling, if the front wheels 6 and the rear wheels 7 pick up irregularities on rough terrain, the handles 31 and 32 disposed on the base frame 2 slightly swing left and right, but the storage tank 75, the blower 65, the engine Since the loaded heavy object portion 5 such as 60 is swingable up and down independently of the base frame 2, in other words, since it is supported in a floating manner, there is almost no left-right deflection of the front wheel 6 and the rear wheel 7. in front Run-out does not occur in the handle 31 and 32.
[0043]
In other words, when the side wheel 70 arranged on the swing frame 50 side picks up unevenness on the rough terrain, the mounted heavy load portion 5 swings up and down. In this case, the mounted heavy load portion 5 Since it is supported by both the side wheel 70 and the base frame 2 (the front wheel 6 and the rear wheel 7), the position of the center of gravity is higher than that in the case of supporting only by the main wheel as in the prior art. The fluctuation is reduced and the running stability is increased, and the swing of the mounted heavy article portion 5 is not easily transmitted to the handles 31 and 32 side.
[0044]
Therefore, even when traveling on rough terrain such as shore J, it is easy to operate the handle and control the aircraft, increasing posture stability and traveling stability, making it difficult to fall, fall, etc. Work can be done easily, properly and efficiently.
[0045]
In addition, the entire swing frame 50 side is urged between the base frame 2 side and the swing frame 50 side in the direction in which the side wheel 70 is pressed against the ground. As an urging means for urging counterclockwise as a central axis of rotation in the counterclockwise direction, a tension coil spring 56 is stretched, so that when a large amount of sprayed matter is contained in the storage tank 75, Of course, even when it is close to the sky, the side wheel 70 is firmly pressed against the ground (slope Q) by the urging force of the tension coil spring 56, as can be understood with reference to FIGS.
[0046]
Therefore, even when the amount of spatter in the storage tank 75 is small, the side vehicle 70 is difficult to lift and the ground is firmly captured. As a result, steering operation and control of the aircraft are further improved. Becomes easier and posture stability and running stability are improved.
[0047]
In the present embodiment, in addition to the above-described effects, the direct injection tube 84 of the tubular spreader 80 is fixed and held in a specific manner by the tube fixture 9 of the support 90. Even when the mounted heavy object portion 5 including the base frame 2 or the blower 65 swings up and down during leveling or the like, the direct injection pipe 84 is fixedly held on the base frame 2 side. As shown in the figure, the swing of the loaded heavy load portion 5 is absorbed by the expansion and contraction and bending of the bellows-shaped flexure tube 82, and the position and inclination of the straight tube 84 in the longitudinal direction (left-right direction). The angle θ hardly changes.
[0048]
For this reason, even when traveling on rough terrain, the spray discharge angle (θ) with respect to the horizontal plane of the spray sprayed and discharged from the injection port 84a of the direct injection pipe 84 of the tubular spraying tool 80 hardly changes. The spraying density of the sprayed material with respect to is uniformed, the spraying unevenness is reduced and the spraying performance is improved.
[0049]
In addition, since the bellows-shaped bent curved injection tube 82 is interposed between the loaded heavy object portion 5 and the direct injection tube 84, the position of the center of gravity changes even when there is an extreme dent in the slope Q. Is relaxed, and posture stability and running stability are increased.
Furthermore, by using a relatively long bellows-shaped flexible bending tube 82, it is possible to minimize changes in the amount of sprayed and discharged sprayed matter.
[0050]
Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various designs can be made without departing from the spirit of the present invention described in the claims. Can be changed.
For example, the cushion member 99 can be made unnecessary by appropriately selecting the material and shape of the ring-shaped tightening brackets 93, 93 themselves.
[0051]
【The invention's effect】
As can be understood from the above description, the traveling power spreader according to the present invention includes a flexible bent tube having a bellows-like shape capable of expanding and contracting a tubular spreader and having an appropriate elastic restoring force, and the like. In addition to the direct injection tube connected to the flexure bending injection tube, the direct injection tube is fixed and held in a specific manner by a support provided on the base frame side. The vertical swing of the loaded heavy load portion is absorbed by the flexible bent tube portion, and the spray emission angle with respect to the horizontal plane of the sprayed material discharged from the nozzle of the direct injection tube hardly changes. The sprinkling density of the sprinkled material with respect to, etc. is made uniform, the spatter unevenness is reduced, and the sprinkling performance is improved.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a traveling power spreader according to the present invention.
FIG. 2 is a left side view of the traveling power spreader shown in FIG.
FIG. 3 is a rear view of the traveling power spreader shown in FIG. 1;
4 is a partially cutaway enlarged left side view of the main part of the traveling power spreader shown in FIG. 1. FIG.
FIG. 5 is a partially cut-away enlarged rear view of the main part of the traveling power spreader shown in FIG. 1;
6 is a rear view showing a state in which the mounted heavy load portion and the swing frame are swingingly inclined in the traveling power spreader shown in FIG. 1;
FIG. 7 is an enlarged rear view showing a state in which the mounted heavy load portion and the swing frame are swinging and tilting in the traveling power spreader shown in FIG. 1;
FIG. 8 is a partially cutaway enlarged view showing a main part of a support provided in the traveling power spreader shown in FIG. 1;
FIG. 9 is a partially enlarged side view for explaining a pipe fixture of a support provided in the traveling power spreader shown in FIG. 1;
10 is a partially enlarged perspective view showing a ring-shaped tightening fitting of a pipe fixture of a support provided in the traveling power spreader shown in FIG. 1. FIG.
[Explanation of symbols]
1 ... Traveling power spreader
2 ... Base frame
5 ... Loaded heavy parts
6 ... Front wheels (main wheels)
7 ... Rear wheel (main wheel)
9 ... Tube fixture
10 ... Oscillating spindle
31, 32 ... Steering handle
50. Swing frame
60. Internal combustion engine (prime mover)
65. Centrifugal blower
65d ... discharge port
70 ... Side car
75 ... Storage tank
80 ... Tube spreader
82 ... Deflection tube
84 ... Direct injection pipe
90 ... Supporting tool
91 ... Support
92 ... Holding plate
93 ... Ring-shaped fastener
96 ... Inclination angle adjustment holding bracket
99 ... Cushion member (slip prevention means)

Claims (3)

Main wheels 6, 7 are arranged in a straight line in the front and rear direction and a steering handle 31, 32 is arranged on a base frame 2 having a swinging support shaft 10 extending in the front-rear direction. The frame 50 is supported so as to be swingable up and down, and a side wheel 70 is disposed on one side of the swing frame 50 in the left-right direction with respect to the moving direction of the machine body. Mounted weight in which a storage tank 75 to be stored, a blower 65 that generates a conveying wind for spraying the scattered matter in the storage tank 75, and a prime mover 60 that is a driving source of the blower 65 are mounted and held. In the traveling power spreader 1 having the object part 5,
The swing frame 50 is loaded in the direction in which the side vehicle 70 is pressed against the ground by the mounted heavy article portion 5, and can expand and contract and bend at the discharge port 65 d of the blower 65 and has an appropriate elastic restoring force. A tubular spraying tool 80 such as a direct injection tube 84 is connected to the base frame 2 via the flexure bending tube 82 and the swing support shaft 10 of the swing frame 50 is connected to the base frame 2. A tube fixture 9 is provided for fixing and holding the direct injection tube 84 so as to prevent movement and tilting of the direct injection tube 84 in the longitudinal direction in the tubular spraying device 80 due to vertical oscillation with the oscillation center axis. A traveling power spreader characterized in that a support 90 is disposed on the base frame 2 side. The tube fixture 9 is fitted to a holding plate 92 and a support rod 91 constituting the support 90 so as to be able to rotate and slide, and is attached and fixed at an arbitrary angle around an axis thereof. And ring-shaped tightening fittings 93 and 93 which are fixedly attached to the holding plate 92 and are fitted onto the direct injection pipe 84 via anti-slip means 99. The traveling power spreader according to 1. The traveling power spreader according to claim 1 or 2, characterized in that the flexible bent tube (82) has a bellows shape.

Images