JP2006230312A - Stand for agricultural implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate trouble of line-drawing markers in readily constituting an obstacle and causing damage thereto, etc., when the line-drawing markers are protruded to lateral sides by mistake or kept in a protruded state during operation to ground a stand and keep a seedling planting apparatus in a state floated on the floor surface though the stand is grounded to keep the seedling planting apparatus in the state floated on the floor surface when the seedling planting apparatus is loaded onto a truck or housed in a warehouse. <P>SOLUTION: The stand for the agricultural implement is composed as follows. An implement for performing ground working while traveling is equipped with the line-drawing markers (2) for drawing index lines to be a traveling index in the next stroke and the stand (3) supporting the implement relatively to the ground so that the line-drawing markers and the stand can be taken in and out. The supporting posture of the stand (3) is characterized as restraining operation of the line-drawing markers (2) to a line-drawing posture. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand for an agricultural machine, and when a work device is supported on a floor using the stand, the operation of a draw marker for use during work to a drawing posture is restrained.

It has a stand that supports the seedling planting device with respect to the floor, and a line marker that draws the path of seedling planting work in the next stroke to the soil surface. There is known a technique for providing a working lever (see, for example, Patent Document 1).
JP 2004-113073 (page 7, FIG. 6).

  When loading the seedling planting device on a truck or storing it in a warehouse, the stand is grounded and the seedling planting device is floated on the floor. At this time, if the drawing marker accidentally goes out to the side or remains in the state of being drawn out, the drawing marker is likely to get in the way and the drawing marker or the like may be damaged.

  According to the first aspect of the present invention, a drawing marker (2) for drawing an index line as a running index for the next stroke and a working device (1) for ground work while running, and the work device (1) are supported on the ground. The stand (3) is provided so that it can be taken in and out, and in the support posture of the stand (3), the operation of the drawing marker (2) to the drawing posture is restrained. When working with a farming machine such as a seedling planter running on the field, retract the stand (3) of the working device (1) and project the left or right drawing marker (2) to the side. The drawing posture is set, the ground work is performed, and the adjacent ground is drawn by the drawing marker (2). Further, when loading the working device (1) into a truck or storing it in a warehouse, the drawing marker (2) is retracted from the drawing posture to the storage posture, and the stand (3) is protruded downward from the storage posture. Let the support posture. When the stand (3) is in the support posture, even if the drawing marker (2) tries to protrude into the drawing posture due to an erroneous operation or the like, it is restrained to the operation position of the stand (3) and protrudes into the drawing posture. Not.

  According to the first aspect of the present invention, the operation of the drawing marker (2) to the drawing posture is restrained by the stand (3) of the working device (1) projecting on the floor surface and in the supporting posture. Therefore, the drawing marker (2) can be prevented from being accidentally projected, and the drawing marker (2) can be prevented from getting in the way or damaged.

  Based on the drawings, a rice transplanter that performs seedling planting work by attaching a seedling planting device (seedling planting device) 1 to the rear side of the vehicle body 6 as an agricultural working machine is illustrated. The vehicle body 6 has a front wheel 10 steered by a steering handle 9 on a dashboard 8 as a shaft 11, and a rear wheel 12 at both ends of a rear axle housing 15. It is set as the four-wheel drive driving | running | working form driven by. A step floor 19 is formed from the left and right sides of the driver's seat 18 to the left and right sides of the dashboard 8, and a center marker 20 is provided at the center of the front end. Further, on the rear side of the driver's seat 18, a fertilizer application device 25 including a facility hopper 22, a feeding device 23, and a fertilizer application fan 24 is provided on the rear frame 21. In addition, a lift link 26 in the form of a parallel link is provided on the rear frame 21 so as to be able to move up and down. The seedling planting device 1 is attached to a link hitch 28 at the rear end of the lift link 26. This seedling planting device 1 is mainly composed of a seedling planting transmission case 29 having an internal transmission mechanism that is transmitted from the PTO shaft on the vehicle body 6 side, and below this is a center float 30 and a side float that can swing up and down. 31 is arranged so that a multi-planted seedling tank 32 with a front rising slope is provided so as to reciprocate left and right, and a strip-shaped mat seedling is received and fed to a rear seedling planting section below. it can. In addition, a planting claw 33 driven in a double crank configuration is provided at the rear part of the seedling planting transmission case 29 so as to face the flat part traces of the floats 30 and 31 and is fed out from the seedling tank 32. The seedlings are separated and retained and planted on the soil surface of the leveling. In the leveling part of each float 30, 31 of this seedling planting device 1, a grooving device 34 for grooving and guiding fertilization is provided on the soil surface, and the fertilizer fed from the fertilizer application device 25 is placed in the grooving channel. Can flow down.

  At the bottom of the seedling planting device 1, an L-shaped stand 3 is pivotally supported around a stand supporting shaft 38 attached to the seedling planting transmission case 29. A drawing marker 2 that protrudes from the bracket 37 and rotates inward and outward around the support pin 40 with respect to the bracket 37 is provided at the tip of the stand support shaft 38 at a position approaching the stand 3. . A bracket 39 protrudes below the stand support shaft 38 on the opposite side of the bracket 37, and the mounting plate 41 of the drawing marker 2 base is rotatable by the support pin 40 with respect to the upper bracket 37 portion. Mounted. A bifurcated mounting plate 42 is rotatably attached to the lower bracket 39 by a support pin 43. Further, a lock pin 44 is inserted between the front end portion of the mounting plate 42 and the upper bracket 37, so that the ground support posture of the stand 3 can be fixed (FIG. 1). In the support posture position of the stand 3 by the lock pin 44, the distal end portion of the lock pin 44 engages the mounting plate 41 of the drawing marker 2 at the upper storage position, and the drawing marker 2 at the storage position is drawn outside. It can be restrained so as not to rotate to the posture. Further, by removing the lock pin 44, the locking of the mounting plate 41 can be released, and the drawing marker 2 can be switched to the outward drawing posture (FIG. 2). At this time, the stand 3 is rotated outward, the mounting plate 42 is superposed on the lower bracket 39, and the lock pin 45 is replaced by a pin hole between them, thereby the stand 3 is attached to the guard arm. It is possible to prevent the lateral end portion of the seedling planting device 1 from coming into contact with an adjacent structure or a shore, and damaging. The stand 3 is switched and rotated around the support pin 43 along the front-rear direction to a support position in a suspended position and an outer guard position, and maintains the L-shaped tip 46 in a rearward-facing position. The drawing marker 2 is bent downward to form a bifurcated drawing portion 47 at the tip. In this state, the drawing marker 2 can be rotated around the support pin 40 to be in a drawing posture or switched to the storage position.

  At the time of seedling planting operation, the stand 3 is switched to the guard position, and the line drawing marker 2 is switched to the drawing posture, and the next soil traveling surface is marked as a marker for the next stroke traveling. . When the drawing marker 2 is stored and the stand 3 is switched from the guard position to the support posture, the mounting plate 41 of the drawing marker 2 at the storage position is locked to the lock pin 44 inserted through the mounting plate 42 of the stand 3. Thus, the drawing posture cannot be switched. For this reason, when the seedling planting device 1 is stored in the bed of a narrow truck, a barn or the like, the drawing marker 2 can be maintained in the storage position by putting the stand 3 in the use posture, and the drawing posture is collapsed. Can be prevented.

  Next, mainly based on FIGS. 5 to 8, the rolling hitch 52 detachably attached to the link hitch 28 at the rear end of the lift link 26 is fixed and maintained in a fixed posture when supported by the stand 50. The attachment and detachment with respect to the link hitch 28 is facilitated. The rolling hitch 52 is provided so as to be rotatable around the rolling shaft 51 with respect to the seedling planting transmission case 29. The rolling hitch 52 has a rolling shaft 51 on the lower rear side, and the rolling shaft 51 is provided so as to be rotatable with respect to the seedling transmission case 29. The rolling hitch 52 in which the rolling shaft 51 is integrated forms a hook 53 on the upper front surface, engages the hook 53 with the upper end of the link hitch 28, and connects the lower fitting portion 54 to the link pin 55. Furthermore, the pin 57 of the link hitch 28 can be inserted into the pin hole 56 formed in the rolling hitch 52 and fixed. A damper stopper 58 is provided at the rear end portion of the lift link 26 and supports the downward movement of the metal 59 around the rolling shaft 51 of the seedling transmission case 29 connected to the link hitch 28 in a vibration-proof manner. Can do. On the bracket 60 on the rolling metal 59, a bifurcated lock plate 61 is provided around the support shaft 62 so as to be able to rotate back and forth against the toggle spring 63, and the lock plate 61 is rotated forward. As a result, the left and right side portions of the rolling hitch 52 can be pinched and the rotation of the rolling hitch 52 around the rolling shaft 51 can be restrained. When the rolling hitch 52 is connected to the link hitch 28, the lock plate 61 is pushed against the toggle spring 63 at the rear end portion 64 of the lift link 26 to release the holding of the rolling hitch 52. The rolling shaft 51 fixed portion at the lower end portion of the rolling hitch 52 has pipe arms 65 on both the left and right sides, and is supported on the upper end of a support plate 67 in a left and right parallel configuration standing on the front center portion of the stand frame 66. it can.

  The stand 50 has support legs 68 arranged at the lower four corners of the stand frame 66, and at the upper part, a rear support post 69 that supports the bottom surface of the seedling planting transmission case 29 and a frame bar that extends over the left and right brackets 60. The seedling planting device 1 can be supported at a predetermined height on the floor surface by including a front support post 71 that supports the 70. Reference numeral 72 denotes a rolling return spring, which is hung between the left and right sides of the seedling planting device 1 and the upper part of the rolling hitch 52. When the seedling planting device 1 is supported on the stand 50, the pipe arm 65 portion of the rolling hitch 52 is supported by the upper end of the stand plate 66 so as to be held on both the left and right sides of the rolling shaft 51, so that the rolling hitch 52 is neutral. Maintained in position. For this reason, automatic connection by the approach of the link hitch 28 of the lift link 26 can be performed accurately.

  The spring 72 has a hook 74 and can be engaged with the hook 73 of the drawing marker 2 as shown in FIG. The hooks 74 on the spring 72 side are guided and slid by the frame portion 75 integral with the seedling planting transmission case 29 side. By the tension by the rolling return spring 72, the rolling hitch 52 is held in the neutral position, and the hitch connection can be easily performed.

  Next, mainly based on FIG. 9, a rolling hitch 52 in which the rolling control of the seedling planting device 1 is set in a fixed relationship with the vehicle body 6, and the seedling planting device that rotates around the rolling shaft 51. A rolling sensor 77 for detecting the rolling rotation angle of the seedling planting device 1 and a rolling cylinder 78 for controlling the rolling angle of the seedling planting device 1 between the seedling planting transmission case 29 and the frame bar 70, etc. The rolling cylinder 78 is extended and contracted via the controller 80 by an operation from the operation panel 79 based on the left / right inclination of the vehicle body 6, and the seedling planting device 1 is maintained parallel to the soil surface. To do. In such rolling control, when a mechanical lock is raised at the operating end of the rolling cylinder 78 and rolling in the left or right direction is stopped, an output request in the direction opposite to the locking direction is made for a certain period of time. Then, the prohibition of output in the locked direction is released. The fixed time for the output request in the opposite direction is configured to be changed by an external operation. In this way, frequent output at the rolling operating end can be prevented.

  Next, mainly based on FIG. 10, the raising / lowering control by the lift cylinder 27 of the seedling planting device 1 detects the depth of the seedling planting soil surface by the depth sensor 81 by the vertical movement of the center float 30, and the controller 80 The lift cylinder 27 is expanded and contracted to raise and lower the seedling planting device 1 so as to maintain a constant seedling planting depth. The dead zone width in this elevation control is set to a relatively sensitive area when seedling planting work is performed with the seedling planting device 1, and is set to the insensitive area side when weeding work is performed with a weeder. In such a lift control device capable of changing a plurality of types of work devices and performing work, the height of the lift link 28 differs depending on the type of work machine. In the case of the seedling planting device 1, it operates at a low position, while the weeding machine operates at a high position. Here, a link sensor 82 for detecting the height of the lift link 28 is provided, and by detecting the height position by the link sensor 82, switching between the sensitive area and the insensitive area is performed to perform the elevation control. is there.

  Next, mainly based on FIG. 11, the seedling receiving frame 90 mounted on the front portion of the vehicle body 6 is configured to rotate back and forth, and has a pivot shaft 91 that is inclined forward and upward. The seedling receiving frame 90 is formed with a seedling receiving shelf 92 extending in a direction orthogonal to the rotation shaft 91 to accommodate the mat seedling 93 in the form of a roll. When the seedling 93 is inserted into the seedling receiving frame 90, when the seedling 93 is supplied to the rear seedling tank 32, the seedling receiving frame 90 is rotated about the rotation shaft 91 by about 180 degrees from the rear side. It can be taken out and supplied to the seedling tank 32. The insertion and removal of the seedling 93 from the seedling receiving frame 90 can be facilitated.

  Next, mainly based on FIG. 12, the shape of the wheel cap 95 in the front wheel 10 and the rear wheel 12 is formed by forming the outer peripheral part 96 and the cross-shaped spoke part 98 passing through the center part 97 into thick parts. The interval portion 99 is configured to be easily elastically deformed in the form of a thin portion. It is possible to easily remove and remove the mud adhering due to the elastic deformation of the gap portion 99 and vibration.

The rear view and side view of a stand and a drawing marker part. The rear view which shows the action state. The side view of a seedling transplanter. The plan view. The side view of the stand part which shows another Example. The front view. The rear view of the partial line drawing marker part. The enlarged side view of the hitch part. The block diagram of rolling control, and the flowchart of the partial control. The block diagram of raising / lowering control, and the flowchart of the partial control. The side view of a seedling receiving frame part. The side view of a foil cap part, and a plane sectional view.

Explanation of symbols

1 Working device 2 Drawing marker 3 Stand

Claims (1)

  A drawing marker (2) for drawing an index line as a running index for the next stroke and a stand (3) for supporting the working device (1) to the ground can be taken in and out of the working device (1) that works on the ground while traveling. A stand for an agricultural machine characterized in that, in the support posture of the stand (3), the operation of the drawing marker (2) to the drawing posture is restrained.

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