JP2019180294A - Work machine - Google Patents

Abstract

To stably exhibit a grass-dividing action by a grass-dividing plate regardless of inclination of a machine body in a back and forth direction.SOLUTION: A work machine 1 includes: left and right traveling means 2 for traveling between rows in a field row-planted with crops; a machine body 3 supported on both traveling means 2; and grass-dividing means 7 supported on the machine body 3 so as to be positioned in front of the traveling means 2, and having a grass-dividing plate 7a formed in a roughly V shape in plane view so as to have an apex angle part 10 forward in plane view. The preceding grass-dividing plate 7a separates into right and left crops C covered on between rows by the apex angle part 10, and subsequently, the traveling means 2 travels between the rows. The grass-dividing means 7 comprises: the grass-dividing plate 7a; lifting means 7b for liftably supporting the grass-dividing plate 7a on the machine body 3; and a grounding part 7c formed so as to make the apex angle part 10 float for a prescribed height to a top soil by grounding on the top soil of the field.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a working machine provided with a weed board that divides a crop covering a strip into left and right.

  As a prior art, the paddy weeder described in Patent Document 1 is exemplified. As shown in FIG. 7, the paddy weeder 100 includes a paddy weeding rotor 101, a woom box 102, a handle 103, and the like. The Woom box 102 supports a mounting bar 104 having a square cross section and mounted horizontally. A weeding board 106 is attached to the attachment horizontal bar 104 via an attachment hole 105 having a rectangular shape. The weed board 106 is formed in a substantially V shape by being bent so as to have an apex angle in the front in a plane. Then, when the worker holds the handle 103 and runs the paddy weeder 100 between the strips of rice in the paddy field, first the rice plant in which the preceding weed plate 106 is covered by the V-shaped apex portion of the strip. The paddy field weeding rotor 101 is adapted to weed the weeds between the streaks.

Japanese Utility Model Publication No. 54-29237

  However, the softness of the field is not constant, and the surface of the field is uneven. Therefore, when the conventional weed board 106 is tilted forward, the V-shaped apex portion projects into the soil. On the contrary, if it inclines backward, it will leave | separate above topsoil and the weeding action may fall, and the paddy field weeding rotor 101 may step on a seedling. Therefore, the operator needs to adjust the posture of the weed board 106 by operating the handle appropriately according to the state of the field, crops, and the like when the paddy weeder is traveling. If the paddy weeder is configured to be directly operated by the operator in this way, it is possible to respond appropriately according to the state of the field, but the paddy weeder configured to automatically run in the field. In this case, it is necessary to optimally adjust the attachment position of the weed board with respect to the airframe in accordance with the state of the field, crops, etc. before traveling. However, it is often the case that a paddy weeder stops in the middle due to an unexpected situation in advance adjustment. At this time, especially when the interval is narrow, it is difficult for an operator to enter the interval, and it is difficult to cope with the unexpected situation.

In order to solve the above problems, the working machine of the present invention is:
Traveling means that travels between the streaks in the field where the crops are planted, an airframe supported by the traveling means, an apex angle that is supported by the airframe so as to be positioned in front of the traveling means, and is forward in a plan view And a weeding means having a weed board formed in a substantially V shape in plan view so as to have a section, and the preceding weed board scrapes the crops covered between the stripes by the apex part, and Subsequently, the traveling device is configured to travel between the strips,
The weeding means includes the weed board, elevating means for supporting the weed board so as to be movable up and down with respect to the machine body, and the apex portion is predetermined with respect to the topsoil by grounding to the topsoil of a farm field. And a grounding portion configured to float at a height.

Although it does not specifically limit as said grounding part, The following aspect is illustrated.
(1) A mode provided with a sled-like body (a plate, a hemisphere, a sphere, a rod, etc.) that touches and slides on the topsoil.
(2) A mode provided with a rotating body (wheel, roller, sphere, endless track, etc.) that contacts the topsoil and rolls.

Although it does not specifically limit as said traveling means, The following aspect is illustrated.
(1) The aspect which is a wheel.
(2) A mode in which the track is endless.

Although it does not specifically limit as said raising / lowering means, The following aspect is illustrated.
(1) A mode of being supported so as to be movable up and down by a link configured to be swingable substantially up and down. This link may be a single link or a parallel link mechanism.
(2) A mode in which the slider is provided so as to be movable up and down along a guide rail extending substantially in the vertical direction.

  According to this configuration, since the grounding portion acts to float the apex portion at a predetermined height from the topsoil regardless of the inclination of the airframe in the front-rear direction, the weeding action by the weed board is reduced. It can be exhibited stably.

  In the working machine, the grounding unit exemplifies a mode provided with a height adjusting means for adjusting the floating height.

  According to this configuration, the floating height can be adjusted according to the state of the field and the crop (the size of the unevenness of the topsoil, the hardness of the topsoil, the growth state of the crop, etc.).

  The working machine according to the present invention has an excellent effect that the weeding action by the weed board can be stably exhibited regardless of the inclination of the machine body in the front-rear direction.

It is a side view of the working machine which concerns on one Embodiment which actualized this invention. It is a top view of the working machine. It is a rear view of the working machine. It is a figure which shows the operation state of the raising / lowering means in the weeding means of the working machine, (a) shows the state in the lowest position, and (b) shows the state in the highest position. It is a figure which shows the adjustment state example of the height adjustment means of the earthing | grounding means in the weeding means of the working machine, (a) is the state adjusted so that the height from topsoil becomes high, (b) is the same height. The state adjusted so that it may become low is shown, respectively. It is a figure which shows the example of a change of the earthing | grounding means of the working machine, (a) is a top view, (b) has each shown the side view. It is a figure which shows the paddy weeder provided with the weed board as a prior art, (a) is a side view of a paddy weeder, (b) is a perspective view of a weed board.

  1 to 5 show a working machine 1 according to an embodiment of the present invention. In each figure, an arrow F points to the front side of the machine body. As shown in FIG. 1 to FIG. 3, the working machine 1 includes a left and right traveling means 2 that travels between the streaks P in a field in which crops C such as vegetables and rice plants are planted, and the left and right traveling means 2. The vehicle body 3 supported by the vehicle body, the left and right drive means 5 mounted on the machine body 3 for driving the travel means 2 via the transmission mechanism 4, and the operation of the drive means 5 are controlled to automatically travel the field. Control means 6, weeding means 7 supported by the airframe 3 so as to be positioned in front of each traveling means 2, a camera support column 8 erected at the front end of the airframe 3, and a rear end portion of the airframe 3 And a weeding means 9 for weeding the streak P in the field. Then, the work machine 1 divides the crop C that the preceding weeding means 7 covers the striations P into the left and right in the field, and subsequently the traveling means 2 travels the striations P, and the camera support column 8 An image or a moving image of a farm field is recorded by a camera (not shown) that is mounted, or weeds of the streak are weeded by the weeding means 9.

  The machine body 3 includes a machine body main body 3a formed in a substantially rectangular shape in plan view, and a pair of left and right machine body side portions 3b and 3b provided on both left and right sides of the machine body main body 3a. The body body 3a includes a front and rear frame 3c extending in the front-rear direction at the center in the left-right direction. A camera support column 8 is erected at the front end of the front-rear frame 3c, and weeding means 9 is provided at the rear end. A levee 3d formed in a substantially inverted U shape in side view is attached between them. Each body side portion 3b is configured to be slidable laterally with respect to the body body 3a via the slide support means 11. The slide support means 11 is attached to the main body 3a, and includes a telescopic frame 11a that is nested so as to expand and contract in the left-right direction, and a fixing means 11b that fixes the stretched state of the telescopic frame 11a. The telescopic frame 11a has a proximal end portion attached to the body body 3a and a distal end portion attached to the body side portion 3b.

  The left and right traveling means 2 are composed of a pair of left and right front wheels 2a and 2a provided at the front part of the body side part 3b, and a pair of left and right rear wheels 2b and 2b provided at the rear part. The axle of the front wheel 2a and the axle of the rear wheel 2b are rotatably supported by the body side portion 3b. Thus, the left and right front wheels 2a, 2a and the rear wheels 2b, 2b are respectively supported by the left and right airframe side portions 3b, so that by adjusting the slide position of the airframe side portion 3b with respect to the airframe body 3a, The interval between the front wheels 2a, 2a and the rear wheels 2b, 2b in the direction is configured to be adjustable according to the interval between the stripes P.

  The drive means 5 includes a pair of left and right motors 5a mounted on the left and right machine body side portions 3b and a substantially central part in the front and rear direction so that the output shaft faces the side and the outside of the machine body 3, and the machine body main body 3a. The battery 5b is mounted and drives the motor 5a.

  Examples of the control unit 6 include a microprocessor (not shown) and a configuration configured to drive the driving unit 5 based on a video or an image input from the camera, but are not limited thereto. It is possible to adopt a known configuration as appropriate.

  The transmission mechanism 4 is a chain transmission mechanism provided on each of the left and right sides, and each chain transmission mechanism is attached to the output shaft of the motor 5a, the axle of the front wheel 2a and the axle of the rear wheel 2b, respectively. , 4c and a chain 4d wound around the three sprockets 4a, 4b, 4c. Each chain transmission mechanism is covered with a chain case 15 having a substantially triangular shape in side view. The chain case 15 is formed so as to function also as a cover on the outer side of the body of the front wheel 2a and the rear wheel 2b. The body side portion 3b is provided with an inner cover 16 that covers the body side of the front wheel 2a and the rear wheel 2b.

  The weeding means 7 supports a weed board 7a formed in a substantially V shape in plan view so as to have an apex portion 10 in a plan view, and the weed board 7a so as to be movable up and down with respect to the body 3. Elevating means 7b and a grounding part 7c configured to float on the topsoil at a predetermined height with respect to the topsoil by grounding to the topsoil in the field.

  The weed board 7a is formed so that the front end edge is inclined backward in a side view, and has an effect of scooping up the crop C covering the streak P. Both rear end portions of the weed plate 7a are extended to the vicinity of the front end portions of the chain case 15 and the inner cover 16, and the crop C divided by the weed plate 7a is caught in the traveling means 2. Or being stepped on.

  The elevating means 7b is a parallel link mechanism including a pair of upper and lower links 21, 22, and is configured to elevate while maintaining the posture of the weed board 7a. Each of the links 21 and 22 constituting the parallel link is pivotally attached to the link support member 24 at the proximal end side and is attached to the link attachment member 23 attached to the weed plate 7a at the distal end side. The link support member 24 is supported by the machine body side portion 3b via the chain case 15. The link attachment member 23 is formed in an inverted U shape when viewed from the front, and the distal ends of the links 21 and 22 are disposed inside thereof. As shown in FIG. 4, in this example, the uppermost position of the weed board 7a is regulated by the tip portion of the upper link 21 coming into contact with the ceiling portion of the link mounting member 23 (see FIG. 4A). ), And the lowest position is regulated by the rear side of the front end portion of the upper link 21 coming into contact with the ceiling portion of the link mounting member 23 (see FIG. 5B). .

  The grounding portion 7c is configured to float the apex portion 10 to a predetermined height with respect to the topsoil by a warp plate 25 as a sled-like body that touches and slides on the topsoil, and adjusts the floating height. A sled plate adjusting screw 26 is provided as a height adjusting means. The warp plate 25 of this example is formed in a curved shape so that the center portion projects downward in a side view. The front portion of the sled plate 25 is supported by a lower portion of the weed plate 7a by a shaft 25a extending in the left-right direction, and the rear portion thereof is configured to swing up and down with the shaft 25a as a fulcrum. A warped portion 25b is provided at the rear portion of the sled plate 25, and is placed on a locking portion 27 provided on the weed plate 7a. Accordingly, the lowest position of the swinging of the weed board 7a is regulated. As shown in FIG. 5, the sled plate adjusting screw 26 is attached to the weed plate 7 a so that the tip portion protrudes downward, and the tip portion is formed on the upper surface of the center portion in the front-rear direction of the sled plate 25. By abutting, the uppermost position of the swing is regulated. In FIG. 5, (a) shows the state adjusted so that the height from topsoil becomes high, and (b) shows the state adjusted so that the height becomes low, respectively.

  The weeding means 9 includes a weeding frame 9a attached to the rear end of the front and rear frame 3c and extending in the left-right direction, and a weeding element 9b arranged in the left-right direction on the weeding frame 9a. The number and position of attachment of each weeding element 9b in the left-right direction of the weeding frame 9a can be adjusted, so that the number of stripes that the left and right front wheels 2a, 2a and rear wheels 2b, 2b straddle and the interval between the stripes can be adjusted. It is possible to respond appropriately. The weeding element 9b includes a pair of weeding lines 31 and weeds each scratching line 31 by scratching the top soil of the strips P.

  Next, a usage example of the working machine 1 of this example and an operation at that time will be described. First, the slide positions of the left and right machine body side portions 3b are adjusted so that the left and right front wheels 2a and the rear wheels 2b travel along the striations P in the field. This example shows a case where the interval between the strips P is narrow, and the slide position is adjusted so as to straddle the two crops C. Further, the weeding element 9b in the weeding means 9 is adjusted according to the number of strips straddled by the left and right front wheels 2a, 2a and the rear wheels 2b, 2b and the interval between the strips P. Further, the uppermost position of the swing is adjusted by a sled plate adjusting screw 26 as a height adjusting means according to the state of the field or the like. Next, the work machine 1 is placed at the travel start position in the field and the travel operation is started. Then, the work machine 1 is automatically controlled by the control means 6 and automatically travels in the field. At that time, the crop C covered by the preceding weeding means 7 is divided into the right and left, and the traveling means 2 is subsequently followed by the traveling means 2. As the vehicle travels between the fields, the camera mounted on the camera support column 8 records an image and a moving image of the field, and the weeding means 9 removes the weeds between the lines.

  According to the working machine 1 of the present example configured as described above, the weed board 7a is supported so as to be movable up and down with respect to the machine body 3 through the lifting means 7b, and is grounded to the topsoil of the farm field. Since the grounding portion 7c configured to float the apex portion 10 to a predetermined height with respect to the topsoil is provided, the grounding portion 7c causes the apex portion 10 to move regardless of the inclination of the airframe 3 in the front-rear direction. Since it acts so that it floats to the predetermined height from the topsoil, the weeding action by the weed board 7a can be exhibited stably.

  Moreover, since the grounding part 7c is provided with the height adjustment means which adjusts the height which floats, the state of the field and the crop (the size of the unevenness of the topsoil, the hardness of the topsoil, the growth state of the crop, etc.) ), The height to be floated can be adjusted.

In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) As shown in FIG. 6, a side wall 25 c is provided on the side of the sled board 25, so that the soil in the field does not enter inside the sled board 25.
(2) Change the grounding part 7c to the following mode.
(2-1) A mode provided with a sled body (hemisphere, sphere, rod, etc.) that touches and slides on the topsoil.
(2-2) A mode provided with a rotating body (wheel, roller, sphere, endless track, etc.) that contacts the topsoil and rolls.
(3) Change the traveling means 2 to an endless track.
(4) The elevating means 7b is changed to a mode in which the elevating means 7b is supported so as to be movable up and down by a slider slidably provided along a guide rail extending substantially in the vertical direction.
(5) The working machine 1 is provided with working means for a field other than the weeding means 9, the configuration of the weeding means 9 is changed (for example, changed to a configuration in which weeding is performed by a rotating body), or only the camera without the weeding means 9 is omitted. Or to be configured to wear.

DESCRIPTION OF SYMBOLS 1 Work implement 2 Traveling means 2a Front wheel 2b Rear wheel 3 Airframe 3a Airframe body 3b Airframe side part 3c Front and rear frame 3d Embankment 4 Transmission mechanism 4a Sprocket 4b Sprocket 4c Sprocket 4d Chain 5 Driving means 5a Motor 5b Battery 6 Battery control means 6 Means 7a Weeding plate 7b Lifting means 7c Grounding part 8 Camera support pillar 9 Weeding means 9a Weeding frame 9b Weeding element 10 Vertical corner part 11 Slide support means 11a Telescopic frame 11b Fixing means 15 Chain case 16 Inner cover 21 Upper link 22 Lower side Link 23 Link mounting member 24 Link support member 25 Warp plate 25a Shaft 25b Warp-back portion 25c Side wall 26 Warp plate adjusting screw 27 Locking portion 31 Weeding line C Crop F Front side of the machine P

Claims (2)

Traveling means that travels between the streaks in the field where the crops are planted, an airframe supported by the traveling means, an apex angle that is supported by the airframe so as to be positioned in front of the traveling means, and is forward in a plan view And a weeding means having a weed board formed in a substantially V shape in plan view so as to have a section, and the preceding weed board scrapes the crops covered between the stripes by the apex part, and Subsequently, the traveling device is configured to travel between the strips,
The weeding means includes the weed board, elevating means for supporting the weed board so as to be movable up and down with respect to the machine body, and the apex portion is predetermined with respect to the topsoil by grounding to the topsoil of a farm field. A work machine including a grounding portion configured to float at a height.   The working machine according to claim 1, wherein the grounding unit includes a height adjusting unit that adjusts the height of the floating.

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