JP2015047127A - Spraying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spraying device in which spraying holes of uniform pitches can be provided at the bottom of a hopper, and buckling does not occur even when foreign matter is caught between the hopper and a shutter.SOLUTION: A spraying device 1 includes a hopper 4 for fertilizers that can accommodate fertilizers, a plurality of spraying holes 42 provided below the hopper 4 for fertilizers, a shutter 43 for adjusting an opening area of the spraying holes 42, and drive means 5 for sliding the shutter 43. When sliding the shutter 43 to the right side, a lever 52 on the right side is caused to contact a contact part 45 on the right side to pull the shutter 43 from the upstream side, and when sliding the shutter 43 to the left side, the lever 52 on the left side is caused to contact the contact part 45 on the left side to pull the shutter 43 from the upstream side, thereby preventing the buckling due to pulling the shutter 43 from the upstream side at all times.

Description

  The present invention relates to a spraying device that sprays fertilizer, seeds, and the like on a farm field, and more specifically, when a fertilizer is dropped and sprayed from a spraying hole provided in a lower portion of a hopper, the shutter is slid to spray. The present invention relates to a spraying device that can adjust the amount of fall from the hole.

  Conventional spraying devices called lime saws generally have a hopper with spray holes for fertilizer spray at the bottom, a sliding shutter that adjusts the opening area of the spray hole, and the opening area of the shutter It is configured with a hydraulic cylinder. Then, when adjusting the amount of application to the field, as shown in FIG. 6, a pair of levers 81 provided at the center are rotated by a hydraulic cylinder or the like, and thereby the shutters 82 provided on the left and right are moved. The application amount is adjusted by adjusting the opening area by pressing or pulling (see Patent Documents 1 to 3, etc.).

JP 2002-253016 A JP 2007-312672 A JP 2009-201471 A

  However, when adjusting the fertilizer application amount using such an application device, there are the following problems.

  In other words, the conventional shutter for adjusting the opening area is adjusted by a lever at the center of the hopper, but if the lever is provided at the center of the hopper in this way, a spray hole is provided at that portion. It becomes impossible to spread fertilizer from that part.

  Also, when sliding such a shutter in the left-right direction, the shutter is slid by pressing or pulling the shutter, but if the shutter is pressed in the sliding direction from the downstream side, the shutter and the spray hole When a large resistance is generated in the gap, there is a problem that the shutter is deformed due to buckling.

  Therefore, the present invention has been made paying attention to the above problems, and can provide a spray hole with a uniform pitch at the bottom of the hopper, and even when foreign matter is sandwiched between the hopper and the shutter. An object of the present invention is to provide a spraying device that does not cause buckling.

  That is, in order to solve the above-mentioned problem, the present invention provides a hopper that can accommodate the scattered material, a plurality of spray holes provided below the hopper, and a shutter that adjusts the opening area of the spray hole, In a spraying device comprising a driving means for sliding the shutter, the driving means is used to slide the shutter toward the one end side by pulling one end side of the shutter, and the other end side of the shutter is moved to the other end side. The shutter is slid in the direction of the other end side by pulling.

  With this configuration, the shutter is not buckled by pulling the shutter from the upstream side even when a large resistance is generated when the shutter slides.

  Also, as such a driving means, contact portions are provided on both sides of the shutter, and when the shutter is slid in one direction, the lever is brought into contact with the contact portion provided on the upstream side in the one direction. When the shutter is slid by, and the shutter is slid in the opposite direction, the shutter is slid by bringing the lever into contact with the contact portion provided on the other end side.

  In this way, the shutter can be pulled by bringing the lever into contact only with the contact portion provided in the pulling direction.

  Furthermore, as a driving means, a contact portion is provided on both sides of the shutter, and a connecting member for connecting the lever is provided. When the shutter is slid in one direction, the connecting member is slid in the one direction. When the lever is brought into contact with the abutting portion provided on one end side and pressed, the pressing state of the lever provided on the other end side and the abutting portion is released, and the shutter is slid in the opposite direction, By moving the connecting member in the opposite direction, the abutting portion provided on the other end side is pressed by the lever, and the lever and the abutting portion provided on the one end side are released.

  If comprised in this way, it will become possible to act simultaneously the pressing state and separation | spacing state of the lever and contact part of both right and left using a connection member.

  In addition, as another driving means, the one end side of the shutter is pulled and at the same time the other end side is pushed to slide the shutter in one direction, and the other end side of the shutter is pulled and the one end side is pushed at the same time. It is also possible to slide the shutter in the reverse direction.

  In this way, by simultaneously applying the pulling force and the pressing force, the shutter can be slid without causing buckling.

  According to the present invention, a hopper capable of accommodating the scattered material, a plurality of spray holes provided below the hopper, a shutter for adjusting the opening area of the spray hole, and a driving means for sliding the shutter In the spraying device comprising the above, using the driving means, the one end side of the shutter is pulled to slide the shutter in the direction of the one end side, and the other end side of the shutter is pulled to remove the shutter. Since the slide is made in the direction of the end side, the shutter does not buckle even when a large resistance is generated when the shutter is slid.

Overall schematic diagram of spraying device in one embodiment of the present invention The figure which shows the outline of the front and back rollers in the same form The enlarged view which shows the lower part vicinity of the fertilizer hopper in the same form The figure which shows the fully closed state and fully open state of the shutter in the same form The figure which shows the fully-closed state and fully open state of the shutter in other embodiment Mechanism diagram showing opening and closing of shutter in conventional example

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The spraying device 1 in this embodiment is configured to spray fertilizer, seeds, and the like on a field. As shown in FIG. 1, a fertilizer hopper 4 provided between the front and rear rollers 2f and 2b. And a seed hopper 3 and a mixing unit 7 for mixing the seeds and fertilizer discharged from the seed hopper 3 and the fertilizer hopper 4 and dropping them on the field. And, characteristically, as shown in FIG. 4, a shutter 43 for adjusting the opening area of the spray hole 42 provided at the bottom of the fertilizer hopper 4 is provided, and this shutter 43 is slid using the driving means 5. When adjusting the opening area, the shutter 43 is slid by pulling from the upstream side in the sliding direction. When the shutter 43 is slid in the reverse direction, the other end side is pulled from the upstream side and the shutter 43 is moved in the reverse direction. Thus, the buckling of the shutter 43 can be prevented. Hereinafter, the detail of the spraying apparatus 1 in this Embodiment is demonstrated.

  First, an outline of the spraying device 1 will be described. The spraying device 1 can be driven by a tractor (not shown) so that it can travel in the field, and can travel in the field by rollers 2f and 2b provided at the front and rear. As shown in FIG. 2, the front and rear rollers 2f and 2b are provided with V-shaped irregularities along the outer peripheral surface, and V-shaped parallel grooves are formed in the field by the mountains of the front roller 2f. At the same time, fertilizer, seeds and the like are dropped from the mixing portion 7 in the formed groove, and the soil is covered with the V-shaped roller 2b from both sides of the groove with the roller 2b on the rear side.

  On the other hand, the seed hopper 3 is configured so that seeds to be dispersed in the field can be introduced from above, and is configured to have a tapered shape so that the gap between the opposing wall surfaces gradually decreases toward the lower side. Has been. An opening for dropping the seed is provided on the bottom surface of the seed hopper 3, and the seed is dropped from the opening and dropped downward through the chute 31.

  Similarly, the fertilizer hopper 4 is configured to be openable at the top so that fertilizer can be introduced from above, and has a tapered shape so that the gap between the opposing wall surfaces gradually decreases downward. As shown in FIG. 3, an agitator 41 for stirring the fertilizer is provided on the lower side of the fertilizer hopper 4, and the fertilizer is stirred by rotating blades 41a provided around the agitator. The fertilizer does not remain in the fertilizer hopper 4 (that is, does not cause a bridge). Further, as shown in FIG. 4, rectangular spreading holes 42 for dropping the fertilizer are intermittently provided at the bottom of the fertilizer hopper 4, and the spreading is correspondingly performed. A shutter 43 for adjusting the opening area of the hole 42 is provided on the lower surface side. Then, an appropriate fertilizer is dropped by sliding the shutter 43 in the left-right direction using the driving means 5 described later.

  The mixing unit 7 is configured to mix the fertilizer dropped from the fertilizer hopper 4 and the seeds dropped from the chute 31 and drop them onto the field, and is formed by the front rollers 2f and 2b. It is mixed with fertilizer and seeds in the field groove and dropped.

  In such a configuration, the structure of the driving means 5 for sliding the shutter 43 of the fertilizer hopper 4 will be described with reference to FIGS.

  First, the shutter 43 driven by the driving means 5 is constituted by a thin metal plate or the like corresponding to the left-right width of the hopper, and has an adjustment hole 44 at a position corresponding to the spray hole 42. While being provided, the amount of spraying can be adjusted by adjusting the overlap state between the adjustment hole 44 and the spraying hole 42. Near the left and right ends of the shutter 43, there are provided contact portions 45 that protrude downward, and correspondingly, levers 52 that contact the inside of the contact portions 45 are provided. Yes. Here, “inside” refers to the “inner side” in the direction toward each contact portion 45. The lever 52 is rotatably supported at one end side by a support portion 61 provided on the frame 6 on the front side, and an abutting portion 45 of the shutter 43 is located at a substantially intermediate position with the operating end 53 on the other end side. By making it abut against, a pulling force is applied from the inside. On the other hand, a single rod-like connecting member 54 is connected to the operating ends 53 of the left and right levers 52 provided in this way, and the action of one of the levers 52 is caused by the action of the hydraulic cylinder 55 fixed to the frame 6. The operating end 53 side is advanced and retracted, whereby the connecting member 54 is moved along the axial direction, and the lever 52 on the other side is simultaneously rotated.

  Next, the adjustment method of the spraying hole 42 of the spraying apparatus 1 comprised in this way is demonstrated.

  First, when the spray hole 42 is to be fully closed, as shown in FIG. 4A, the pin 56 of the hydraulic cylinder 55 is pulled, and thereby the operating end of the lever 52 on the hydraulic cylinder 55 side. 53 is moved inward (left side of the drawing). Then, the lever 52 rotates to the left with the rotation end 51 as the center, and is slightly separated from the contact portion 45 of the shutter 43 to release the pressed state. At this time, the connecting member 54 moves to the left side by the action of the hydraulic cylinder 55 and moves the operating end 53 of the lever 52 on the other end side to the outside (left side in the drawing). Then, the lever 52 pivots outward (left side) around the pivot end 51, presses the inside of the contact portion 45 at the center position of the lever 52, and pushes the shutter 43 to the left side by the lever principle. . Then, the shutter 43 slides to the left, and the position of the spray hole 42 can be closed with the shutter 43 to be in a fully closed state. That is, by pulling from the upstream side of the shutter 43, the shutter 43 is slid to be fully closed.

  On the other hand, when sliding in the direction in which the spray hole 42 is opened, as shown in FIG. 4B, the pin 56 of the hydraulic cylinder 55 is protruded, thereby moving the operating end 53 of the lever 52 on the hydraulic cylinder 55 side outward. (Right side of the drawing) Then, the lever 52 rotates outward (right side) with the rotational end 51 as the center, and presses the inner side of the contact portion 45 of the shutter 43 to apply a pulling force from the inner side. At this time, the connecting member 54 moves to the right side with the rotation of the lever 52, thereby rotating the operating end 53 of the lever 52 on the opposite side to the right side and releasing the contact state with the contact portion 45. Let That is, by pulling the shutter 43 from the upstream side in the sliding direction of the shutter 43, the shutter 43 is slid, and the spraying hole 42 and the adjustment hole 44 are overlapped to be fully opened.

  Thus, a fertilizer hopper 4 that can store fertilizer, a plurality of spray holes 42 provided below the fertilizer hopper 4, a shutter 43 that adjusts the opening area of the spray holes 42, and In the spraying device 1 including the driving unit 5 that slides the shutter 43, the shutter 43 is slid in the direction of the one end side by pulling the one end side of the shutter 43 using the driving unit 5, and the shutter Since the shutter 43 is slid to the other end side by pulling the other end side of the shutter 43, the shutter 43 is not buckled even when a large resistance is generated when the shutter 43 is slid. . Further, since a force for pulling the shutter 43 is applied on both ends, it is not necessary to provide a driving means or the like in the central portion as in the prior art, and the spray holes 42 can be provided in the central portion at a constant pitch. Become.

  Further, as the driving means 5, a contact portion 45 projecting from both ends of the shutter 43 is provided, and a connecting member 54 for connecting the lever 52 is provided. When the shutter 43 is slid in one direction, the connecting member 54 is connected. The member 54 is slid in the one direction so that the lever 52 is brought into contact with and pressed against the contact portion 45 provided on one end side, and the pressing state of the lever 52 and the contact portion 45 provided on the other end side is changed. When releasing and sliding the shutter 43 in the reverse direction, the connecting member 54 is slid in the reverse direction so that the contact portion 45 provided on the other end side is pressed by the lever 52 and the one end side is moved to the one end side. Since a mechanism that releases the pressing state of the provided lever 52 and the contact portion 45 is used, the connecting member 54 separates the pressing state of the left and right levers 52 and the contact portion 45 from each other. At the same time it is possible to act.

  <Second Embodiment>

  Next, a second embodiment will be described. In the first embodiment, the lever 52 is brought into contact with the contact portions 45 provided at both ends of the shutter 43 from the inside to slide the shutter 43. In this embodiment, FIG. As shown in FIG. 2, a long hole 52a is provided in the substantially central portion of the lever 52, and the protruding contact portion 45 of the shutter 43 is slidably positioned in the long hole 52a so as to apply a pulling force. It is. In addition, in this Embodiment, what attached | subjected the same code | symbol is abbreviate | omitted description as what has the same structure as 1st Embodiment.

  In this embodiment, as shown in FIG. 5, an elongated hole 52 a is provided in the approximate center of the lever 52 along the longitudinal direction, and the contact portion 45 of the shutter 43 is positioned there. The length of the long hole 52a is set to such a length that the contact portion 45 can move in the long hole 52a by the rotation of the lever 52. Even when the shutter 43 extends due to heat or deformation, a slight gap is provided so that the extension can be absorbed.

  When the shutter 43 is slid in the fully closed state by such a configuration (FIG. 5A), the pin 56 of the hydraulic cylinder 55 is similarly pulled, thereby providing the hydraulic cylinder 55. The operating end 53 of the side lever 52 is pulled to the left side of the drawing. Then, the operating end 53 of the left and right levers 52 rotates to the left via the connecting member 54. At this time, the lever 52 on the upstream side in the movement direction (the side opposite to the side where the hydraulic cylinder 55 is provided). The abutting portion 45 comes into contact with the elongated hole 52a, and a force for pulling the shutter 43 upstream acts. At this time, if the abutting portion 45 is also in contact with the elongated hole 52a of the lever 52 on the downstream side, the shutter 43 can be pushed from the downstream side, and the shutter 43 only by the pulling force is used. It becomes possible to prevent the elongation and deformation of the material.

  Conversely, when the shutter 43 is slid to be fully opened (FIG. 5B), similarly, the pin 56 of the hydraulic cylinder 55 is extended so that the side on which the hydraulic cylinder 55 is provided. The operating end 53 of the lever 52 is moved to the right side of the drawing. Then, the left and right levers 52 are rotated by the operating end 53 to the right via the connecting member 54 and come into contact with the elongated holes 52a of the lever 52 on the upstream side (the side where the hydraulic cylinder 55 is provided) in the moving direction. The contact portion 45 comes into contact, and a pulling force acts on the shutter 43 upstream. At this time, if the abutting portion 45 is also in contact with the elongated hole 52a of the lever 52 on the downstream side, the shutter 43 can be pushed from the downstream side, and the shutter 43 only by the pulling force is used. It will be possible to prevent the elongation of the.

  In this way, if the pressure is applied from the downstream side so as to assist the pulling force from the upstream side, the burden on the shutter 43 is reduced locally compared to the case where only the pulling force is applied. Can be prevented from stretching or deforming. On the other hand, if the tensile force and the pressing force are not kept in the same state, the shutter 43 may be buckled or distracted. For this reason, in order not to cause such buckling and distraction, an adjustment mechanism that can be adjusted so that the respective forces are equal to each other is provided, or play that can absorb the buckling and distraction is provided. It is preferable to keep it. As such an adjusting mechanism, a method of adjusting the mounting position of the screw provided in the elongated hole in the connecting portion between the connecting member 54 and the lever 52 can be considered.

  In this way, if a pulling force and a pressing force can be applied simultaneously to both ends, the shutter 43 can be slid without causing buckling.

  In addition, this invention is not limited to the said embodiment, It can implement in a various aspect.

  For example, in the above-described embodiment, the protrusion 43 is provided on the shutter 43 so that the lever 52 is brought into contact, but conversely, a hole is provided at both ends of the shutter 43 and accommodated in the hole. A protruding member may be provided on the lever, and the lever may be rotated so as to contact the hole of the shutter 43 to apply a pulling force. In this case, in the relationship with the present invention, the edges of the holes provided at both ends of the shutter 43 correspond to the contact portions.

  In the above-described embodiment, the left and right levers 52 are rotated by one hydraulic cylinder 55, but driving units such as a hydraulic cylinder and a motor are arranged on both the left and right sides, and the upstream drive in the sliding direction is performed. Only the portion may be applied to apply a pulling force.

  Further, in the above embodiment, the lever 52 is brought into contact with the protruding contact portion 45 of the shutter 43, and the shutter 43 is slid by rotating the lever 52. However, the hydraulic cylinder 55, etc. The drive unit may be directly connected to the contact part 45 of the shutter 43 so that only the pulling force is applied.

DESCRIPTION OF SYMBOLS 1 ... Spreading device 2f, 2b ... Roller 3 ... Seed hopper 31 ... Chute 4 ... Fertilizer hopper 41 ... Agitator 42 ... Spreading hole 43 ... Shutter 44 ··· Adjustment hole 45 ··· Contact portion 5 ··· Driving means 51 ··· Rotary end 52 ··· Lever 53 ··· Operating end 54 ··· Connection member 55 ··· Hydraulic cylinder 56 ··· -Pin 6 ... frame 61 ... support part 7 ... mixing part

Claims (4)

A hopper capable of containing the spatter;
A plurality of spray holes provided below the hopper;
A shutter for adjusting the opening area of the spray hole;
In a spraying device comprising a driving means for sliding the shutter,
Using the drive means, pulling one end of the shutter to slide the shutter in the direction of the one end, and pulling the other end of the shutter to slide the shutter in the direction of the other end. A spraying device characterized by that. When the drive means is provided with contact portions on both sides of the shutter and the shutter is slid in one direction, the shutter is moved by contacting the lever with the contact portion provided on the upstream side in the one direction. 2. The spraying device according to claim 1, wherein when sliding the shutter in the reverse direction, the shutter is slid by bringing a lever into contact with a contact portion provided on the other end side. . The driving means is provided with contact portions on both sides of the shutter and a connecting member for connecting the lever. When the shutter is slid in one direction, the connecting member is slid in the one direction to end one end. When the lever is brought into contact with the contact portion provided on the side and pressed, the lever provided on the other end is released from the pressed state and the shutter is slid in the opposite direction, the connecting member 3 is moved in the opposite direction so that the contact portion provided on the other end side is pressed by the lever and the pressing state of the lever provided on the one end side and the contact portion is released. The spraying device described. The driving means pulls one end side of the shutter and simultaneously pushes the other end side to slide the shutter toward the one end side, and pulls the other end side of the shutter and simultaneously pushes the one end side. The spraying device according to claim 1, wherein the shutter is slid in the reverse direction.

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