JP2007267615A - Agricultural feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To beforehand avoid that feeding out amount changes arbitrarily in an agricultural feeding device for reciprocating an operation arm for feeding by a reciprocating operation rod. <P>SOLUTION: In the agricultural feeding device, a finely regulating means for movably supporting a second movable member 62 in the longitudinal direction of an operation arm 47, forming a plurality of engaging recessed parts 74, in which a positioning pin 73 fixed in position to a first movable member 61 is selectively engaged or disengaged, in parallel in the longitudinal direction of a swinging arm 47 and screwing the second movable member 62 in the longitudinal direction of the operation arm 47 to the first movable member 61 is installed in the first movable member 61 which is movable in the longitudinal direction of the operation arm 47, and fastening operation tool 64 for supporting and connecting an operation rod 48 to the second movable member 62 by a connecting pin 79 and fixing the first movable member 61 to the operation arm 47 is installed, and the second movable member 62 is fastened and fixed together with the first movable member 61 by fastening operation of the fastening operation tool 64. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an agricultural feeding device that feeds powdered fertilizers and chemicals stored in a hopper in a fixed amount.

  As the above-mentioned agricultural feeding device, the operating rod extended from the crank mechanism is connected to the operating arm extended from the feeding operating shaft, the operating arm is reciprocally swung by pushing and pulling the operating rod, and the feeding operating shaft is A structure in which a feed roll or the like is driven and rotated by intermittently or pulsatically feeding forward and rotating is frequently used.

  In such an agricultural feeding device, it is necessary to adjust the feeding amount according to the situation, and as a means for that, by adjusting the position of the connecting point of the operating rod with respect to the operating arm in the longitudinal direction of the operating arm, the operating rod is determined. A feed amount adjusting mechanism configured to change the swing angle of the operation arm with respect to the reciprocating stroke is adopted.

As the feed amount adjusting mechanism, the first movable member movable in the longitudinal direction of the operation arm is fitted and supported so that the second movable member can be moved in the longitudinal direction of the swing arm, and the first movable member and the second movable member are supported. Engagement recesses for engaging the positioning pins penetratingly mounted over the movable member are formed at a plurality of locations in the longitudinal direction of the operation arm, and the first movable member is moved toward the operation arm to move the positioning pin into the engagement recess. A screwing operation unit for engaging and pressing is provided, and fine adjustment means for moving the second movable member in the longitudinal direction of the swing arm with respect to the first movable member is provided, and the operation rod is pivotally supported on the second movable member. A connected one is known (see Patent Document 1).
JP 2003-310017 A (FIGS. 17 and 18)

  According to the adjustment structure described above, it is possible to perform any feed amount adjustment by combining the stepped position adjustment of the first movable member and the continuous position adjustment of the second movable member. There is a risk of slackening. The screwing operation portion that pulls and moves the first movable member to the operation arm and engages and presses the positioning pin with the engagement recess can be easily and firmly tightened and fixed using a nut with a large knob. The fine adjustment means for feeding and moving the second movable member to which the operating rod is connected is prone to loosening because the operating force by the operating rod repeatedly acts in the forward and reverse directions. There was a risk that the amount of feed would change without permission.

  The present invention has been made paying attention to such a point, and it is possible to easily lock the second movable member to which the operation rod is connected and to prevent the amount of feeding from being changed without permission. The purpose is that.

According to a first aspect of the present invention, an operation rod extended from a crank mechanism is connected to an operation arm extended from a feeding operation shaft, and the operation arm is reciprocally swung by pushing and pulling the operation rod. In the agricultural feeding device configured to adjust the feeding amount by adjusting the position of the connecting point of the operating rod to the operating arm in the longitudinal direction of the operating arm,
The first movable member movable in the longitudinal direction of the operation arm supports the second movable member so as to be movable in the longitudinal direction of the operation arm, and the positioning pin provided for fixing the position on the first movable member is selectively detached. A plurality of engaging recesses formed in parallel along the longitudinal direction of the swing arm, and fine adjustment means for screw-moving the second movable member relative to the first movable member in the longitudinal direction of the swing arm. And a second operating member that is pivotally connected to the movable member by a connecting pin, and a tightening operation tool that fixes the first movable member to the operation arm is provided. The second movable member is operated by tightening the tightening operation tool. Are configured to be fastened together.

  According to the above configuration, the stepped feed amount adjustment is performed by adjusting the movement of the first movable member, and the stepless feed amount fine adjustment is performed by adjusting the screw feed of the second movable member relative to the first movable member. By tightening the tool, the first movable member is fixed to the operation arm and the second movable member is also fastened together.

  Therefore, according to the first invention, it is possible to lock not only the first movable member but also the second movable member only by the tightening operation of the tightening operation tool, and the second movable member moves during continuous use. It is possible to reliably prevent the feeding amount from changing arbitrarily.

According to a second invention, in the first invention,
A check bracket is connected and fixed to the connecting pin, and the check bracket can be moved relative to the positioning pin in the longitudinal direction of the operation arm and is non-rotatably engaged around the axis of the connecting pin. It is.

  According to the said structure, the abrasion by rotation of a positioning pin can be suppressed, and it can operate | move smoothly without rattling over a long period of time.

According to a third invention, in the first or second invention,
The tightening operation tool is configured to be rotatable from above the operation arm, and an adjustment amount display gauge is provided on the upper surface of the operation arm.

  According to the above configuration, the feeding amount adjustment operation can be performed from above the operation arm, and when applied to a fertilizer applying a feeding device behind the driver's seat, the extension amount is adjusted by extending the hand from the driver. Therefore, adjustment during the work can be performed without getting out of the driving section.

A fourth invention is the invention according to any one of the first to third inventions,
A pair of one-way rotation clutches having the same rotation transmission direction is mounted on the feeding operation shaft, the operation arm is mounted via one one-way rotation clutch, and the other one-way rotation clutch is connected. The mounted operating arm and the operation arm are reversely linked via a reverse link mechanism, and the forward movement of the reciprocating swing of the operation arm is transmitted to the feeding operation shaft via one one-way rotation clutch. The reciprocating motion in the reciprocating swing of the reciprocating member is configured to be transmitted to the feeding operation shaft via the reversing link mechanism, the operating arm, and the other one-way rotation clutch, and the operation is performed by removing the link member constituting the reversing link mechanism The arm is configured to block the transmission of the backward movement of the arm to the feeding operation shaft.

  According to the above configuration, by operating the reversing link mechanism, it is possible to pulsately rotate the feeding operation shaft in a fixed direction in each of the forward and backward movements of the reciprocating operation arm, and remove the link member. By disabling the reverse link mechanism, the feeding operation shaft is intermittently rotated in a fixed direction by only one of the forward and backward movements of the operation arm that is reciprocated, thereby reducing the feeding amount by half. Therefore, the feeding amount can be adjusted over a wide range as a whole.

A fifth invention is the fourth invention, wherein:
The frame is provided with a holding portion that detachably engages and holds the removed link member.

  According to the above configuration, the link member removed when the feeding amount is adjusted by half can be stored without loss.

A sixth invention is the invention according to any one of the first to fifth inventions,
The end of the operating rod is configured in a free joint structure.

  According to the above configuration, the operation rod reciprocally operated by the crank mechanism and the connecting pin for pivotally connecting the second movable member are prevented from causing undesired torsion and the occurrence of looseness due to uneven wear or destruction, thereby preventing long-term operation. Can be operated smoothly.

  The whole side surface of the rice transplanter with a fertilizer applicator comprised by the 8-row planting specification is shown by FIG. In this rice transplanter with a fertilizer application, a seedling planting device 4 having an eight-row planting specification is hydraulically mounted on the rear part of a traveling machine body 3 that has a front wheel 1 that can be steered and a rear wheel 2 that cannot be steered and travels by four-wheel drive. It has a basic structure in which a fertilizer 7 is provided at the rear part of the traveling maneuvering body 3 while being connected to the rear end part of the lifting / lowering link mechanism 6 having a parallel quadruple link structure driven by the cylinder 5.

  An engine 8 is mounted on the front portion of the traveling machine body 3, and its output is transmitted to a hydrostatic continuously variable transmission (HST) 9 which is a main transmission capable of switching between forward and backward travel, and the transmission output is transmitted to the mission. After being input to the case 10 and further gear-shifted, it is transmitted to the front wheel 1 and the rear wheel 2.

  The seedling planting device 4 is detachably coupled to and supported by the rear end portion of the lift link mechanism 6, and has a horizontally long cylindrical planting frame 11 and a feed case 12 that receives working power taken out from the mission case 10. , A seedling stage 13 on which mat-like seedlings are placed and reciprocally moved laterally with a fixed stroke; eight sets of rotary planting mechanisms 14 for cutting out and planting seedlings one by one from the lower end of the seedling stage 13; There are provided five leveling floats 15 for leveling the planned planting locations, and the planting mechanism 14 has two rear left and right sides of four planting cases 16 connected in parallel in a rearward cantilever manner to the planting frame 11. It is installed in pairs.

  The fertilizer application device 7 is mounted on the traveling machine body 3 between a driver seat 17 provided at the rear of the traveling machine body 3 and the seedling planting device 4, and a fertilizer hopper for storing powdered fertilizer. 21, a rotary feed mechanism 22 that feeds the fertilizer in the fertilizer hopper 21, and wind feeds the fed fertilizer to the grooving device 24 provided in each leveling float 15 of the seedling planting device 4 through the supply hose 23. A blower 25, an electric motor 26 that drives the blower 25, and a blower duct 27 that distributes and supplies the conveying air from the blower 25 to the feeding mechanism 22. A detection sensor (not shown) for detecting whether a planting clutch (not shown) for transmitting power to the seedling planting device 4 is turned on or off is provided. When the planting clutch is turned on, the power motor 26 is activated. When the planting clutch is turned off, the power motor 26 stops.

  The feeding mechanism 22 is configured by providing a feeding case 30 connected to the lower end of the fertilizer hopper 21 with two feeding rolls (not shown), and as shown in FIG. 3, four sets of feeding mechanisms. 22 are arranged in parallel on the left and right, and two feeding hoses 23 are connected to each feeding mechanism 22 so that the fertilizer can be fed out for eight lines.

  The supply hose 23 is detachably connected to the feeding case 30, and when the seedling planting device 4 is removed from the lifting link mechanism 6, as shown in FIGS. 4 to 6, seedlings erected from the planting frame 11 are placed. It is configured to insert and support the free end side of the supply hose 23 bent and deformed downward in a notch loop-shaped receiving rod 19 attached to the support column 18 for support via a horizontal frame 18a. Since the bent supply hose 23 tends to extend with an elastic restoring force, the state where the bent supply hose 23 is inserted and supported by the receiving rod 19 with the restoring force is maintained.

  As shown in FIG. 8, the feeding case 30 is divided into upper and lower parts on a dividing surface passing through the roll axis, the upper case 30a is connected to the lower end of the fertilizer hopper 21, and the lower case 30b is on the machine body side. It is fixed. A support bracket 32 connected to the upper case 30a is configured to be rotatable up and down around a fulcrum p on a frame 33 standing from the rear of the traveling machine body 3, and the fertilizer hopper 21 and the upper case 30a are rearward around the fulcrum p. By tilting it down, it is possible to open the feeding case 30 and perform maintenance such as cleaning inside the case or removing and cleaning the feeding roll. The upper case 30a is connected to the lower case 30b by connecting a hopper support frame 34 made of a round pipe connected to the support bracket 32 and a frame 35 erected from the traveling machine body 3 with a buckle-type stopper 36. The predetermined feeding action position is fixed. In addition, when lifting and rotating the fertilizer hopper 21 and the upper case 30a, the hopper support frame 34 can be used as a handle.

  Next, the drive structure of the feeding mechanism 22 will be described. As shown in FIGS. 3 and 8, a common feed operation shaft 41 is horizontally installed across the four feed mechanisms 22 arranged in parallel, and a drive gear 42 and a feed roll shaft provided on the feed operation shaft 41 are provided. The driven gear 44 provided in 43 is interlocked with each other. The feeding operation shaft 41 is connected to the rear end of the fertilization drive shaft 45 that is led out rearward from the mission case 10 and provided along the lower portion of the traveling machine body 3 via a crank mechanism 46.

  The crank mechanism 46 includes a crank arm 49 connected to the rear end of the fertilizer application drive shaft 45 and an operation rod 48 extending upward therefrom, and an operation arm 47 mounted on the feeding operation shaft 41. And the upper end of the operating rod 48 are interlocked and connected, and the operating arm 47 is reciprocally swung as the crank arm 49 rotates in a certain direction, and the reciprocating swing is transmitted to the feeding operation shaft 41. The feed roll shaft 43 geared to the feed operation shaft 41 is rotationally driven in a predetermined feed rotation direction (counterclockwise in this example) by being pulsatically rotated in a predetermined direction. The detailed structure is shown in FIGS.

  A pair of one-way rotation clutches 51 and 52 having the same rotation transmission direction characteristics are mounted in parallel on the feeding operation shaft 41, and the operation arm 47 is externally mounted on one of the one-way rotation clutches 51 and the other. The operating arm 53 is externally fitted to the one-way rotating clutch 52, and the operating arm 47 and the operating arm 53 are reversely linked via the reverse link mechanism 54.

  The reversing link mechanism 54 interlocks the linkage arm 47 a integrally extended from the base portion of the operation arm 47 and the one end portion 56 a of the relay link 56 arranged to be rotatable around the fulcrum shaft 55 by a short link member 57. In addition, the other end portion 56 b of the relay link 56 and the operating arm 53 are interlocked and connected by a long link member 58.

  According to the above configuration, the downward swinging (forward movement) of the operation arm 47 is transmitted to the feeding operation shaft 41 via the one-way rotation clutch 51, and the feeding operation shaft 41 is moved by a predetermined angle in the predetermined direction (clockwise in the figure). ) And the upward swing (return) of the operation arm 47 is transmitted to the feed operation shaft 41 via the operating arm 53 and the other one-way rotation clutch 52, so that the feed operation shaft 41 is moved by a predetermined angle. The feed operation shaft 41 is oscillated and driven in a fixed direction in accordance with the reciprocating swing of the operation arm 47, and the feed roller shaft 43 is pitched in the feed direction. It is sent.

  The link member 58 in the reverse link mechanism 54 is configured to be removable from the operating arm 53 and the relay link 56 by removing the retaining pins 59 attached to both ends thereof. When the function of the reverse link mechanism 54 is removed and the function of the reversing link mechanism 54 is eliminated, transmission to the feeding operation shaft 41 due to the backward movement of the reciprocating operation of the operation arm 47 is interrupted, and the feeding operation shaft 41 is intermittently moved only by the forward movement of the operation arm 47. Is swung in a predetermined direction. Accordingly, the feeding roll shaft 43 geared to the feeding operation shaft 41 is intermittently forward-turned in a predetermined feeding direction (counterclockwise in the drawing), and the feeding operation shaft 41 is moved forward and backward by the operation arm 47. The amount of fertilizer fed per unit time is halved compared to the normal time of driving the.

  When the fertilizer feed amount is halved as described above, the removed link member 58 is formed of a resin spring clamp that is driven into and fixed to a bracket 33a projecting from an appropriate position of the frame 33, as shown in FIGS. It is configured to be elastically locked via the holding portion 60.

  The fertilizer feed amount is adjusted by changing and adjusting the connecting position of the operating arm 47 and the operating rod 48 in the longitudinal direction of the operating arm 47 and changing the swing angle of the operating arm 47 with respect to the pushing and pulling movement of the operating rod 48 for a fixed stroke. The detailed structure is shown in FIG. 9, FIG. 10, FIG. 12, and FIG.

  The operation arm 47 is made of a sheet metal material formed in a downward U-shaped cross-sectional shape, and a first movable member 61 and a second movable member 62 made of a sheet metal member are respectively disposed in an inner space opened downward. It is internally fitted so as to be movable in the arm longitudinal direction. The first movable member 61 and the second movable member 62 are each made of a sheet metal material and formed in a box shape opened forward and downward, and the second movable member 62 is fitted inside the first movable member 61. Yes.

  A slit 63 is formed on the upper surface of the operation arm 47 along the longitudinal direction of the arm, and a bolt 64 with a knob as a tightening operation tool which is inserted into the arm through the slit 63 is provided on the first movable member 61. The circular hole 65 formed on the upper surface and the front / rear elongated hole 66 formed on the upper surface of the second movable member 62 are inserted and screwed into a nut 67 provided in the second movable member 62. .

  A screw shaft 68 using a hexagon bolt is welded and fixed to the second movable member 61 in the longitudinal direction of the operation arm 47 in a backward direction, and a rotation operation member 69 is screwed onto the screw shaft 68. .

  A circular hole 71 is formed in the upper portion of the first movable member 61 so as to penetrate left and right, and a front and rear elongated hole 72 is formed in the second movable member 62 so as to penetrate left and right. A positioning pipe 73 is inserted and fixed over the long hole 72.

  A plurality of engagement recesses 74 are formed at the lower end edge of the operation arm 47 at a predetermined pitch in the longitudinal direction of the operation arm 47, and the first movable member 61 is arbitrarily moved in the longitudinal direction of the operation arm 47. By tightening the bolt 64 with the knob, the first movable member 61 is pulled upward, the positioning pin 73 is pushed into and engaged with any one of the engagement recesses 74, and the first movable member 61 is positioned in the arm longitudinal direction. It is configured to be fixed. In this case, the second movable member 62 is also pulled upward by the tightening of the bolt 64 with the knob, and the first movable member 61 and the second movable member 62 are fixed together.

  An annular groove 75 is formed on the outer periphery of the rotation operation member 69 mounted on the screw shaft 68 of the first movable member 61 and is rotated around a guide recess 76 formed in the rear wall portion of the first movable member 62. The moving operation member 69 is inserted so that the left and right edges of the guide recess 76 are engaged with the annular groove 75.

  A circular hole 77 is formed in a lower portion of the second movable member 62 so as to penetrate left and right, and a large-diameter longitudinal long hole 78 is formed in a lower portion of the first movable member 61 so as to penetrate left and right. The upper end of the operating rod 48 is connected to a connecting pin 79 inserted and supported in the round hole 77. The front and rear elongated holes 78 of the first movable member 61 are formed in a size that does not come into contact with the connecting pin 79, and are formed only to allow the connecting pin 79 to move when the second movable member 62 moves back and forth. .

  According to the above adjustment structure, the first movable member 61 is moved in the longitudinal direction of the operation arm 47 after the knob-attached bolt 64 is loosened and the first movable member 61 is moved downward to a position where the positioning pin 73 is disengaged from the engaging recess 74. By arbitrarily moving, the bolt 64 with the knob is tightened again, the first movable member 61 is pulled up, and the positioning pin 73 is pressed against the desired engagement recess 74, so that the connection point between the operation arm 47 and the operation rod 48 is multistage. Can be repositioned.

  When the first movable member 61 is positioned by engaging the positioning pin 73 with the selected engagement recess 74 and the rotation operation member 69 is rotated without completely tightening the bolt 64 with knob, 2 The movable member 62 is moved forward and backward with respect to the first movable member 61, and thereby the position of the connection point between the operation arm 47 and the operation rod 48 is continuously adjusted in the longitudinal direction of the operation arm (fine Adjustment).

  After performing the step adjustment of the first movable member 61 and the stepless fine adjustment of the second movable member 62 as described above, the position of the first movable member 61 is only fixed by tightening the bolt 64 with the knob. Instead, the fine adjustment by the second movable member 62 is locked.

  A check fitting 80 is connected and fixed to the connecting pin 79, and a front-rear recessed portion 81 formed in the check fitting 80 is engaged with the positioning pin 73. As a result, the second movable member 62 can be moved in the longitudinal direction of the operation arm while disabling the rotation of the connection pin 79 around the axis, and wear due to the rotation of the connection pin 79 can be avoided. Can do.

  One gauge 82 is attached from one side surface to the upper surface of the operation arm 47 so that the feeding amount can be visually confirmed not only from the side of the operation arm 47 but also from above.

  The end of the operating rod 48 that is pivotally connected to the second movable member 62 has a rotation fulcrum portion through which the connection pin 79 is inserted and connected, and a rotation that is freely rotatable around an axis perpendicular to the rotation axis. It is configured as a universal joint structure having a moving fulcrum portion, and unjust torsion is applied to the connecting pin 79 from the operating rod 48 which is pushed and pulled back and forth by the crank mechanism 46, and uneven wear and destruction may occur. It is prevented.

Side view of rice transplanter with fertilizer application Side view showing main part of fertilizer application equipment Rear view showing main part of fertilizer application equipment Side view of removed seedling planting device The front view which shows the supply hose storage structure in the removed seedling planting apparatus The top view which shows the supply hose storage structure in the removed seedling planting apparatus The perspective view which shows the holding structure of the removed link member Side view showing main part of fertilizer application equipment Side view of feed amount adjustment structure Cross-sectional plan view of feed amount adjustment structure Side view showing part of fertilizer application equipment Longitudinal side view of feed amount adjustment structure Disassembled perspective view of feed amount adjustment structure Longitudinal front view of feed amount adjustment structure

Explanation of symbols

33 Frame 41 Feeding operation shaft 46 Crank mechanism 47 Operation arm 48 Operation rod 51 One-way rotation clutch 52 One-way rotation clutch 53 Actuating arm 54 Reverse link mechanism 58 Link member 61 First movable member 62 Second movable member 64 Tightening operation tool (Bolt with knob)
73 Positioning pin 74 Engaging recess 79 Connecting pin 80 Checking bracket 82 Gauge

Claims (6)

The operation rod extended from the crank mechanism is connected to the operation arm extended from the pay-out operation shaft, and the operation arm is configured to reciprocally swing by pushing and pulling the operation rod. In the agricultural feeding device configured to adjust the feeding amount by adjusting the position of the connecting point in the longitudinal direction of the operation arm,
The first movable member movable in the longitudinal direction of the operation arm supports the second movable member so as to be movable in the longitudinal direction of the operation arm, and the positioning pin provided for fixing the position on the first movable member is selectively detached. A plurality of engaging recesses formed in parallel along the longitudinal direction of the swing arm, and fine adjustment means for screw-moving the second movable member relative to the first movable member in the longitudinal direction of the swing arm. And a second operating member that is pivotally connected to the movable member by a connecting pin, and a tightening operation tool that fixes the first movable member to the operation arm is provided. The second movable member is operated by tightening the tightening operation tool. An agricultural feeding device characterized by being configured to fasten and fix together.   A check bracket is connected and fixed to the connecting pin, and the check bracket is movable relative to the positioning pin in the longitudinal direction of the swing arm, and is non-rotatably engaged around the axis of the connecting pin. The agricultural feeding apparatus according to claim 1.   3. The agricultural feeding device according to claim 1, wherein the tightening operation tool is configured to be rotatable from above the operation arm, and a gauge for adjusting amount display is provided on the upper surface of the operation arm.   A pair of one-way rotation clutches having the same rotation transmission direction is mounted on the feeding operation shaft, the operation arm is mounted via one one-way rotation clutch, and the other one-way rotation clutch is connected. The mounted operating arm and the operation arm are reversely linked via a reverse link mechanism, and the forward movement of the reciprocating swing of the operation arm is transmitted to the feeding operation shaft via one one-way rotation clutch. The reciprocating motion in the reciprocating swing of the reciprocating member is configured to be transmitted to the feeding operation shaft via the reversing link mechanism, the operating arm, and the other one-way rotation clutch, and the operation is performed by removing the link member constituting the reversing link mechanism The agricultural feeding apparatus according to any one of claims 1 to 3, wherein transmission of the backward movement of the arm to the feeding operation shaft is interrupted.   5. The agricultural feeding device according to claim 4, wherein the frame includes a holding portion that detachably engages and holds the removed link member.   The agricultural feeding device according to any one of claims 1 to 5, wherein an end portion of the operation rod is configured in a universal joint structure.

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