JP5000140B2 - Ditcher - Google Patents

Description

  The present invention relates to a ditcher that excavates a drainage ditch in a field.

  Such a ditcher is known as described in Patent Document 1. As shown in FIG. 4 (side view), the ditcher includes a connecting portion 82 provided at the front portion of the main body 81 and connected to a traveling machine body such as a tractor, and a main body 81 on the rear side of the connecting portion 82. A rotating shaft 61 that extends downward and is rotatably supported, and a spiral blade body (helical blade in the literature) 62 attached upward from the lower portion of the rotating shaft 61 are provided.

  On the rotary shaft 61 above the spiral blade body 62 is attached a jump plate (discharge wing in the literature) 83 that discharges the soil excavated by the spiral blade body 62 in the outward direction. A cover part (in the literature, a guide room) 84 is provided so as to cover. The cover portion 84 is provided with a discharge port 84 a that opens on one side and discharges the soil excavated by the spiral blade body 62.

  When the rotary shaft 61 rotates, the groove excavator 80 moves while the soil excavated by the spiral blade 62 moves upward from below and is discharged from the discharge port 84a to the side by the spiral blade 62. To form grooves.

Japanese Utility Model Publication No. 63-40534

  In this conventional ditcher, the jumping plate extends in a direction substantially perpendicular to the rotation axis arranged in a substantially vertical direction, so that the direction of discharge of the excavated soil discharged from the discharge port is substantially horizontal. Direction. For this reason, the part of the soil discharged | emitted in the peripheral part of the upper end of the formed groove | channel accumulates and returns in a groove | channel, and the problem that a groove | channel with a poor finish is formed occurs.

  In addition, when the amount of water contained in the soil in the field is large, the discharge distance of the discharged soil is shortened, the amount of soil returning to the formed groove is further increased, and a poorly finished groove is formed. It is formed. As described above, the conventional grooving machine has a problem to be solved that a groove with poor finish is formed depending on the field condition, and the range of applicable field conditions is narrow.

  In addition, since the distance of the soil released by the spring plate extending in a substantially vertical direction is relatively small, the soil accumulates in the vicinity of the formed groove, and when sowing wheat, There is a need for a post-diffusion machine that spreads on the surface of the field, and an easy-to-follow ditcher is desired.

  The present invention has a demand for a ditching machine that has a good groove finish, has a wide range of applicable field conditions, and facilitates subsequent work, and an object thereof is to provide a ditching machine that meets such requirements. To do.

In order to achieve the above object, a ditching machine according to the present invention includes a rotating shaft that extends downward from a machine frame (for example, the frame portion 51 in the embodiment) and is rotatably supported, and a lower portion of the rotating shaft that extends upward. And a spring plate provided on a rotating shaft above the spiral blade body, and the rotary shaft rotates and the soil excavated by the spiral blade body is outside by the spring plate. in grooving machine for forming a groove in progress while discharging direction, Hanedashi plate, with fit these to the rotary shaft so as to face the front surface facing to the rotational direction front side to the obliquely upward relative to the rotary shaft It is characterized in that the mounting angle can be changed .

According to this invention, it is possible to release the soil excavated by the spiral blade body so as to draw a parabola by attaching the front surface of the spring plate facing forward in the rotational direction to the rotation shaft so as to face obliquely upward. it can. For this reason, compared to the case where the front surface of the spring plate extends in a substantially vertical direction, the distance that the soil is released can be increased, and the amount of soil that is released and returns to the groove is reduced. A groove having a good finish can be formed. Moreover, by increasing the soil release distance, even a soil containing a lot of water can be released away from the groove, and the range of applicable field conditions can be expanded. In addition, since the excavated soil can be spread over a wide range of the field, when sowing wheat, it is possible to ease the work after spreading the excavated soil evenly over the entire field. Moreover, by attaching the jumping plate so that the mounting angle can be changed with respect to the rotation axis, the mounting angle of the jumping plate can be changed flexibly in response to changes in the field conditions. For this reason, the range of applicable field conditions can be further expanded, and the usability of the ditcher can be improved.

Further, the grooving machine of the present invention includes a rotating shaft that extends downward from the machine frame and is rotatably supported, a spiral blade body that is provided upward from a lower portion of the rotating shaft, and an upper portion of the spiral blade body. In the ditching machine provided with a jumping plate provided on the rotation shaft of the rotary shaft, the rotary shaft rotates and the soil excavated by the spiral blade body is discharged outwardly by the jumping plate and proceeds to form a groove. , Hanedashi plate is attached the front surface facing in the rotation direction front side with mounting et be detachably on mounting seat provided in the rotary shaft so as to face obliquely upward, it can be changed mounting angle with respect to the rotational axis It is characterized by being able to.

According to this invention, it is possible to release the soil excavated by the spiral blade body so as to draw a parabola by attaching the front surface of the spring plate facing forward in the rotational direction to the rotation shaft so as to face obliquely upward. it can. For this reason, compared to the case where the front surface of the spring plate extends in a substantially vertical direction, the distance that the soil is released can be increased, and the amount of soil that is released and returns to the groove is reduced. A groove having a good finish can be formed. Moreover, by increasing the soil release distance, even a soil containing a lot of water can be released away from the groove, and the range of applicable field conditions can be expanded. In addition, since the excavated soil can be spread over a wide range of the field, when sowing wheat, it is possible to ease the work after spreading the excavated soil evenly over the entire field. In addition, by detachably attaching the jumping plate to a mounting seat provided on the rotating shaft, it is possible to easily replace the jumping plate that is worn and damaged during the digging operation. Moreover, by attaching the jumping plate so that the mounting angle can be changed with respect to the rotation axis, the mounting angle of the jumping plate can be changed flexibly in response to changes in the field conditions. For this reason, the range of applicable field conditions can be further expanded, and the usability of the ditcher can be improved.

  Furthermore, the spring plate of the present invention is characterized in that it is attached to an attachment seat provided on the rotary shaft along an axis of rotation center of the rotary shaft via an inclination setting member.

  According to this invention, the mounting angle of the jumping plate can be easily changed by attaching the jumping plate to the mounting seat provided on the rotating shaft via the inclination setting member. The spring plate can be attached at the mounting angle. For this reason, the usability of the ditcher can be further improved.

  According to the grooving machine according to the present invention, the jump plate is attached to the rotation shaft so that the front surface facing the front side in the rotation direction is obliquely upward, thereby forming a groove having a good finish, and corresponding field conditions. It is possible to provide a ditching machine that has a wide range and facilitates post work.

  Hereinafter, a preferred embodiment of a trench machine according to the present invention will be described with reference to FIGS. 1 to 3. For convenience of explanation, the following description will be made with the directions of arrows shown in FIG. 1 (plan view) as the front-rear direction and the left-right direction.

  As shown in FIG. 1, the trench digging machine 1 is connected to a three-point link coupling mechanism (not shown) provided at the rear of the traveling machine body 90, and grooving work according to forward traveling and backward traveling of the traveling machine body 90. Is to do. The three-point link coupling mechanism includes a pair of lower links that are disposed with a predetermined interval in the width direction of the traveling body 90, extend rearward, and are rotatably attached in the vertical direction. It has a top link that is disposed at an upper position between the links and extends rearward and is pivotably mounted in the vertical direction, and a lifting device that swings the lower link in the vertical direction. Thus, the trench excavator 1 is configured to be movable in the vertical direction.

  The ditcher 1 is mounted on the traveling machine body 90 and has a mounting portion 10 having an input shaft 12a to which power from the traveling machine body 90 is input, and is mounted on the mounting section 10 and can move in the left-right direction of the traveling machine body 90. Offset mechanism 20 and a movable end side (rear end side) of the offset mechanism 20 that is rotatably disposed in the horizontal direction and is transmitted from the input shaft 12a on both right and left sides of the traveling machine body 90 or at a desired position. And a working unit 50 for performing a grooving operation.

  The mounting portion 10 includes a hitch frame 11 that extends in the left-right direction, and a connection frame (not shown) that is attached to the front side of the hitch frame 11 and that can be connected to a three-point link connection mechanism provided on the traveling machine body 90. Become.

  A gear box 12 is provided at the center of the hitch frame 11 in the left-right direction. The gear box 12 includes the input shaft 12a described above, and the input shaft 12a is a transmission shaft from a PTO shaft (not shown) of the traveling machine body 90. Power is transmitted through (not shown).

  As shown in FIGS. 1, 2 (a) (side view) and 2 (b) (rear view), the offset mechanism 20 is pivoted with the front end side as a link fulcrum at the center upper portion and the center lower portion of the hitch frame 11. A pair of upper and lower upper and lower swing arms 21 and 22 that are freely connected and extend rearward, and are arranged side by side along the left side of the upper swing arm 21 so that the front end is rotatable to the left end of the hitch frame 11. The rear end side of the upper swing arm 21 connected to the rear arm 24 is connected to a rear arm 24 that is pivotably attached.

  The rear ends of the upper swing arm 21 and the lower swing arm 22 are rotatably attached to a pair of brackets 25 protruding rearward from the center upper and lower portions of the rear arm 24, and the front end of the offset arm 27 is The offset mechanism 20 is attached to a bracket (not shown) provided at the left end of the hitch frame 11 so as to protrude forward, and the offset mechanism 20 includes a hitch frame 11, an upper swing arm 21, a lower swing arm 22, an offset arm 27, and a rear arm 24. The parallel link mechanism is constituted by.

  Between the upper swing arm 21 and the offset arm 27, the swing regulating member 30 that regulates the swing of the offset mechanism 20 and places the working unit 50 at the right offset work position or the left offset work position can be adjusted. It is attached.

  Between the pair of brackets 25, a support shaft 35 that is inserted through these brackets and extends in the vertical direction is rotatably attached. The frame 51 is attached to the support shaft 35 in a state where the tip of the frame 51 constituting a part of the working unit 50 is inserted, and the frame 51 can be rotated in the left-right direction with the support shaft 35 as a rotation center. .

  The working unit 50 is fixed to the front end of the frame 51 in a fixed state. For this reason, the working unit 50 rotates together with the frame unit 51 around the support shaft 35 as a rotation center. The working unit 50 includes a main body frame 57 that is attached to the distal end portion of the frame portion 51 and extends downward, and a groove body 60 that is rotatably attached to the main body frame 57. The grooving body 60 includes a rotary shaft 61 extending in the vertical direction, and a spiral blade body 62 is attached upward from a lower portion of the rotary shaft 61. The rotating shaft 61 is configured to rotate by receiving the power transmitted to the input shaft 12a. The rotation shaft 61 rotates in the direction of arrow A so that the spiral blade body 62 moves upward from the lower part. In addition, the rotating shaft 61 is in a substantially vertical posture when in a working state.

  A jump plate 63 is attached to the upper portion of the rotary shaft 61 via a mounting seat 61 a provided on the rotary shaft 61, and a cover portion 58 is provided on the main body frame 57 so as to cover the jump plate 63. . The cover portion 58 is provided with a discharge port 58 a that opens to one side of the main body frame 57 and discharges the soil excavated by the spiral blade body 62. The mounting seat 61a has a plate shape and extends radially with respect to the rotation shaft 61, and is inclined so that the upper portion thereof is located behind the lower portion in the rotation direction of the rotation shaft 61. That is, the mounting seat 61a is inclined such that the seat surface on the front side is inclined upward.

  The spring-out plate 63 attached to the attachment seat 61a has a plate shape, and its upper and lower ends are bent to enhance rigidity. The spring-out plate 63 is detachably attached by fastening means such as bolts and nuts in a state where the back surface thereof is in contact with the seating surface of the attachment seat 61a. For this reason, the spring-out plate 63 is attached in a state in which the front surface 63a facing the front side in the rotational direction faces obliquely upward. As a result, the soil excavated by the spiral blade 62 is released so as to draw a parabola as indicated by an arrow B in FIG. In FIG. 2A, the jumping plate 63 is 5 ° to 10 ° with respect to the rotation center axis S of the rotating shaft 61 so that the discharged soil does not hit the top plate 58 b of the cover portion 58, the frame portion 51, or the like. It is mounted with an inclination angle θ of °.

  As shown in FIG. 3 (side view), the spring plate 63 is attached to an attachment seat 61 a provided on the rotary shaft 61 along the rotation center axis S of the rotary shaft 61 via an inclination setting member 65. May be. The inclination setting member 65 is disposed so as to face the bottom surface 65a opposed to the seating surface of the mounting seat 61a and the back surface of the jumping plate 63 so that the springing plate 63 is disposed at a predetermined angle with respect to the mounting seat 61a. The inclined surface 65b is formed in a triangular shape having a predetermined angle θ. The inclination setting member 65 is fastened to the mounting seat 61a by a bolt inserted through the spring-out plate 63 and the inclination setting member 65. Thus, by attaching the jumping plate 63 to the mounting seat 61a via the inclination setting member 65, the mounting angle of the jumping plate 63 can be easily changed, and the jumping plate has a mounting angle that matches the field conditions. 63 can be attached, and the usability of the ditcher 1 can be further improved. The inclination setting member is formed of a spacer-like member having the above-mentioned shape or a plurality of protrusions having different heights and arranged side by side from one side to the other side so that the tip part of the adjacent protrusion is higher than the other. It may be formed, or elastic bodies having different heights may be arranged and interposed in the vertical direction.

  Now, as shown in FIGS. 2A and 2B, the main body frame 57 is formed with the side and bottom surfaces of the groove M formed behind the rotating shaft 61 and below the cover portion 58. A groove forming part 70 is provided.

  Next, the operation of the groove machine 1 when the groove M is formed in the field by the groove machine 1 of the present invention will be described. As shown in FIG. 1, first, the ditcher 1 is mounted on the rear portion of the traveling machine body 90, and the traveling machine body 90 is installed at a place where the groove M is formed. Then, the offset mechanism 20 is swung to move the working unit 50 to the offset work position (the right-side offset work position Pr in the drawing), and the rocking restriction member 30 restricts the rocking of the offset mechanism 20. Then, in order to allow the groove excavator 1 to move downward under its own weight until the groove M to be formed reaches a predetermined depth, a lower limit swing position of the lower link of a three-point link mechanism (not shown) is set.

  Then, the traveling machine body 90 is caused to travel forward, and the power from the traveling machine body 90 is transmitted to the input shaft 12 a of the trench excavator 1. When power is transmitted to the ditcher 1, as shown in FIG. 2 (a), the rotating shaft 61 rotates and the rotation of the spiral blade body 62 lifts and moves the soil in the field U upward from below. Then, it is discharged obliquely upward by the spring plate 63 and discharged in a parabolic manner. At the same time, the left and right side surfaces of the groove M formed in the field U by the groove forming unit 70 are shaped, and the bottom surface of the groove M is shaped. The rotating shaft 61 enters the field U due to its own weight. For this reason, the depth of the groove M gradually increases as the groove digger 1 advances, and when the groove M reaches a predetermined depth, the downward movement of the groove digger 1 is restricted by the three-point link mechanism. The machine 1 continuously forms a groove having a predetermined depth.

  As described above, when the groove M is formed, the soil excavated by the spiral blade 62 is discharged upward and drawn in a parabola so that the front surface of the spring plate 63 is substantially vertical. Compared with the case of extending in the direction, the distance to which the soil is released can be increased. Therefore, it is possible to reduce the amount of soil that is discharged, accumulates at the peripheral edge of the upper end of the groove M, and returns to the groove M, and the groove M having a good finish can be formed. In addition, since the soil discharge distance increases, even if the soil is soft to some extent, it can be released away from the groove to form a groove M having a good finish, so that it can be handled The range of conditions can be expanded. In addition, since the excavated soil can be spread over a wide area of the field, when sowing wheat, it is possible to facilitate the work after the soil is excavated evenly over the entire field.

  Further, since the spring plate 63 is detachably attached to the mounting seat 61a provided on the rotating shaft 61, it is possible to easily replace the spring plate that is worn and damaged during the digging operation.

The top view of the ditcher concerning one embodiment of the present invention is shown. FIG. 2A is a side view of the ditcher, and FIG. 2B is a rear view of the ditcher. The side view concerning other embodiment of the jumping board attached to this ditcher is shown. The side view of the conventional trench machine is shown.

DESCRIPTION OF SYMBOLS 1 Grooving machine 61 Rotating shaft 61a Mounting seat 62 Spiral blade body 63 Spring plate 63a Front surface 65 Inclination setting member M Groove S Rotation center axis

Claims (3)

A rotating shaft that extends downward from the machine frame and is rotatably supported, a spiral blade body that is provided upward from the lower portion of the rotating shaft, and a spring that is provided on the rotational shaft that is above the spiral blade body. In a ditching machine comprising a plate, the rotary shaft rotates and proceeds while discharging the soil excavated by the spiral blade body in the outward direction by the spring plate,
The Hanedashi plate Mizoho the front facing the rotation direction front side with fit these to the rotary shaft so as to face obliquely upward, characterized in that the mounting angle is attached can be changed with respect to the rotational axis Machine. A rotating shaft that extends downward from the machine frame and is rotatably supported, a spiral blade body that is provided upward from the lower portion of the rotating shaft, and a spring that is provided on the rotational shaft that is above the spiral blade body. In a ditching machine comprising a plate, the rotary shaft rotates and proceeds while discharging the soil excavated by the spiral blade body in the outward direction by the spring plate,
The Hanedashi plate, with its front surface facing in the rotation direction front side the mounting et be detachably on mounting seat provided in the rotary shaft so as to face obliquely upward, mounting angle can be changed with respect to the rotational axis Grooving machine characterized by being mounted.   The groove excavator according to claim 1 or 2, wherein the spring plate is attached to an attachment seat provided on the rotary shaft along an axis of rotation center of the rotary shaft via an inclination setting member. .

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