JP2007295892A - Weeder attached to tending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weeder attached to a tending machine since when a tending machine is fixedly connected to a weeder long in the longitudinal direction, a weeding apparatus damages crops even if the traveling wheels of the tending machine avoid crops by difference between the positions of the traveling wheels of the tending machine and weeding position of the weeding apparatus so that the prevention of the damages is required. <P>SOLUTION: The weeder attached to a tending machine has a constitution that the right and left center of the front of the machine frame 18 of the weeder 2 having a horizontally rotating rotary blade 1 is pulled and attached to the rear of the tending machine 3 so that the machine frame 18 is horizontally bendable relatively to the tending machine 3 by a connecting vertical axis 4. The universal joint 6 of a transmission part (5) for transmitting power from the tending machine 3 to the weeder 2 is positioned at either the top or bottom of the connecting vertical axis 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a weeding machine equipped with a management machine that performs weeding of the soil surface that grows between each pod on which crops such as tobacco and soybean are grown, and as a weeding form, cutting of a grass stalk with a rotary blade, or This is a form performed by cutting the root part by culti- cal.

For example, in Patent Document 1, a center cultivating claw located at the center of the machine width and side rotary claw arranged on the left and right sides of the center cultivating claw are slid in the left and right direction with respect to the toolbar provided in the horizontal direction. The technique of the middle tillage weeder that adjusts the middle tillage position of the furrow is known.
Japanese Patent Laid-Open No. 9-37604 (2nd page, FIG. 4)

  The baskets for planting crops have a predetermined interval for shaping while plowing, but the width of crops varies depending on the growth state. In such vine cultivation, in order to automatically weed the furrows by running the management machine, it is necessary to move laterally quickly so that the cultivating nail and the rotary nail do not damage the crop. The structure in which the cultivating claw or the rotary claw is slid to the left and right with respect to the provided tool bar is not smoothly moved, and it is often difficult to perform quick adjustment.

  In addition, because the management machine and the weeder are long and fixedly connected to each other, the weeding machine can be used even if the running wheel runs away from crops due to the difference between the running wheel position of the management machine and the weeding position of the weeder. May hurt crops.

The present invention has taken the following technical measures in order to eliminate the above-mentioned drawbacks.
In other words, the invention described in claim 1 is that the front left and right center of the machine frame 18 of the weeding machine 2 having the rotary blade 1 that rotates horizontally is connected to the rear part of the management machine 3 and the machine frame 18 is connected to the management machine 3 with the longitudinal axis 4. On the other hand, a weeding machine equipped with a management machine was constructed by pulling it so that it can be bent right and left.

  If comprised as mentioned above, even if it is the structure which becomes long back and forth from the management machine 3 to the weeder 2, it will bend and drive | work so that the running direction of the management machine 3 and the running direction of the weeder 2 may differ, and the management machine 3 The weeding position of the rotary blade 1 does not follow the traveling wheel.

  The invention according to claim 2 is the configuration according to claim 1, and the universal joint 6 of the transmission portion 5 that transmits power from the management machine 3 to the weeder 2 is positioned either above or below the connecting longitudinal axis 4. It is characterized by that. With this configuration, even if the space between the management machine 3 and the weeder 2 is bent, the power transmission of the transmission unit 5 is smooth.

  The invention according to claim 3 is characterized in that, in the configuration according to claim 1 or 2, the rotary blade 1 of the weeder 2 is provided so as to sandwich the ridge and the sandwiching width thereof can be changed. To do. With this configuration, the management machine 3 can travel while straddling the fence and weed the left and right sides of the fence with the rotary blade 1 of the weeder 2 so as not to damage the crop.

  The invention according to claim 4 is the invention according to claim 3, and the crop is damaged by moving the rotary blade 1 to the left and right automatically by the crop detection of the crop sensor 7 for detecting the stalk or leaf of the crop. This is what I did not.

According to the first aspect of the present invention, even when the ridge is bent, the rotary blade of the weeder 2 can be weeded in a position that does not damage the crops on the ridge while traveling the traveling wheel of the management machine 3 along the ridge.
In the invention described in claim 2, the management machine 3 and the weeder 2 are smoothly bent, and the power transmission from the management machine 3 side to the weeder 2 at the time of bending is also smooth.

According to the third aspect of the present invention, the left and right sides of the kite can be weeded by traveling with the rotary blade 1 of the management machine 3 sandwiching the kite even when the kite interval is wide.
According to the fourth aspect of the present invention, the operator can automatically weed without worrying about the position of the rotary blade 1, and is freed from the work while constantly observing the distance between the rotary blade 1 and the crop.

Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the management machine-equipped weeding machine of the present invention is mounted via a hitch 12 at the rear left and right center of the management machine 3 in the form of a four-wheel drive riding tractor. The management machine 3 is composed of left and right front wheels 10 and left and right rear wheels 11, and is configured such that both the front and rear wheels 10 and 11 can be driven and steered.

  The hitch 12 swings left and right via a main unit side hitch frame 62 a provided on the mounting frame 62 on the vehicle body side of the management machine 3, a bracket 16 projecting forward from the machine frame 18 side of the weeder 2, and a connecting longitudinal axis 4. The work machine side hitch frame 15 to be connected is locked with the upper and lower pins 13 and 14 provided on the work machine side hitch frame 15 to the hook member provided on the machine side hitch frame 62a side, and the both are engaged. In this configuration, the stopper member 62c is engaged with the lower pin 13 engaged with the hook by the operation of the handle 62d.

  An input shaft 17 is mounted on the work machine side hitch frame 15 through a metal in a horizontal forward direction. The input shaft 17 and the transmission shaft 63 on the weeder 2 side are connected to each other by a universal joint 6 that can be bent and transmitted to constitute the transmission portion 5.

  On the rear surface of the work machine side hitch frame 15, a bending restricting piece 64 protrudes toward the machine frame 18 of the weeder 2, and when the bending angle θ of the weeder 2 with respect to the management machine 3 increases, It is possible to prevent the vehicle 50 from bending too much by coming into contact with the frame 50 and to facilitate the operation when the work machine 3 is moved backward.

  The machine frame 18 of the weeder 2 is provided with an output shaft 19 that is connected to the transmission shaft 63 at the center, and a horizontal frame 20 is provided in the left and right lateral directions. Arm mounting frames 21 and 22, guide mounting frames 23 and 24, and cylinder mounting brackets 25 and 26 project from the outside, and a center output shaft 27 is erected in the center.

  The arm attachment frames 21 and 22 are pivotally supported by pivot shafts 32 and 33 with arms 30 and 31 having cutter shafts 28 and 29 provided vertically at the rear ends. Therefore, the arms 30 and 31 can swing in the left and right directions around the vertical axis. Stroke sensors 34 and 35 for detecting the swing angles of the arms 30 and 31 are provided, and the swing angles of the arms 30 and 31, that is, It is used for the rotational position control of the left and right rotary blades 1.

  A pair of left and right guide mounting frames 23, 24 are provided so as to protrude rearward from the horizontal frame 20, and the arms 30 are parallel to the horizontal frame 20 to connect the rear ends of the guide mounting frames 23, 24. , 31 are provided between the upper and lower sides to support the guide frames 36, 37.

  Cylinder mounting brackets 25 and 26 are provided at both left and right ends of the horizontal frame 20. Electric cylinders 38 and 39 are mounted between the mounting brackets 25 and 26 and the arms 30 and 31, respectively. , 39 are configured to swing the arms 30, 31 separately on the left and right sides by independent left and right expansion and contraction actions.

  Cutter shafts 28 and 29 are provided at the distal ends of the arms 30 and 31, and a plurality of rotary blades 1 each having a bowl-shaped blade blade are attached to a blade plate 40 attached to the lower portions of the cutter shafts 28 and 29. , 42 are configured. The rotary blade 1 may be a disk-shaped disk blade.

  A support leg bracket 66 is provided at the rear ends of the arms 30, 31, and the support leg 44 attached with a gauge ring 43 with a caster angle is pivotally supported by a vertical pin 45, and a long hole 46 and a lock lever 47 are provided. The tilting direction with respect to the traveling direction of the support leg 44 can be adjusted slightly to the left and right by the fixing means. The gauge wheel 43 can prevent the weeder 2 from swinging left and right by pinching the cage.

  The left and right cutters 41, 42 are arranged and used so as to sandwich the crop on the fence, and are composed of spring plates that rotate and press the switch 48 when they hit the stems or leaves of the crop inside the arms 30, 31. When the crop sensor 7 is provided and the crop hits the crop sensor 7, the switch 48 reacts to send a crop detection signal to the control unit. The control unit operates the electric cylinders 38 and 39 to move the cutters 41 and 42 from the crop. It is configured not to cut away.

  The power transmission in the above example is performed as follows. The transmission is transmitted from the input shaft 17 connected to the PTO shaft (not shown) on the management machine 3 main body to the transmission shaft 63 via the universal joint 6, and the gear is transmitted from the transmission shaft 63 to the output shaft 19 erected on the front frame 50. , And the power is transmitted from the output shaft 19 to the center output shaft 27 by the belt 51, and the power is transmitted from the center output shaft 27 to the cutter shafts 28 and 29 by the belts 52 and 53.

  In the weeding work, the working machine 3 is caused to run while the rotary blade 1 is driven to rotate while the cutter 41, 42 is positioned so as to sandwich the cocoon on which the crop is grown from the left and right. The positions of the cutters 41 and 42 are adjusted first. When the crop sensor 7 detects a crop, the electric cylinders 38 and 39 are operated to move the cutters 41 and 42 away from the crop, and when the crop sensor 7 returns, the cutters 41 and 42 are moved. Automatic control to return 42 to the initial position.

The embodiment shown in FIG. 5 is an example of the configuration of a management machine-equipped weeder that is used when the row spacing of the ridges is narrow.
A horizontally long guide frame 54 is attached to the work machine side hitch frame 15, and a weeder frame 55 integrated with the guide frame 54 is mounted so as to be movable left and right. The weeder frame 55 is fixed to the horizontal frame 20 and the guide mounting frames 23 and 24 and the guide frames 36 and 37, and the guide frame 54 is provided by rollers 56 and 57 provided on the guide mounting frames 23 and 24 extending forward. Is attached between the mounting bracket 58 and the lateral frame 20 at the end of the guide frame 54, and the handle 60 that rotates the expansion screw 59 is turned to turn the weeder frame 55 left and right. It can be moved and fixed. Since the handle 60 is located away from the weeder frame 55, there is no risk that the operator touches the cutters 41 and 42.

  The structures of the arms 30, 31 and the like with the cutters 41, 42 attached to the tips are the same as described above, but the tension roller 61 is pressed against the belt 51 so as not to loosen in response to the horizontal movement of the weeder frame 55. ing.

Overall side view of a weeder equipped with a management machine Overall plan view of a weeder equipped with a management machine Partial plan view of a weeder equipped with a management machine Partial enlarged plan view of a weeder equipped with a management machine Plan view of another embodiment of a weeder equipped with a management machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotary blade 2 Weeding machine 3 Management machine 4 Connection longitudinal axis 5 Power transmission part 6 Universal joint 7 Crop sensor

Claims (4)

  The machine frame (18) of the weeding machine (2) having a horizontally rotating rotary blade (1) is connected to the rear side of the management machine (3) at the front left and right center, and the machine frame (18) is connected to the management machine ( 3) A weeding machine equipped with a management machine that can be bent to the left and right.   The universal joint (6) of the transmission part (5) for transmitting power from the management machine (3) to the weeder (2) is located either above or below the connecting longitudinal axis (4). A weeder equipped with a management machine as described in 1.   The weeding machine equipped with a management machine according to claim 1 or 2, wherein the rotary blade (1) of the weeding machine (2) is provided so as to sandwich the ridge and the sandwiching width thereof can be changed.   4. The management according to claim 1, wherein the rotary blade (1) is automatically moved to the left and right by the crop detection of the crop sensor (7) for detecting a stalk or leaf of the crop. Machine-mounted weeder.

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