JP2017176089A - Weeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weeder capable of smoothly weeding a planting row of an odd-numbered row in one stroke, in the weeder in which a weeding working machine including an intrarow spacing weeding unit and an interrow space weeding unit are connected in a lifting/lowering manner, and thereby the intrarow spacing and the interrow space can be weeded at the same time.SOLUTION: A weeding working machine 7 has an intrarow spacing weeding unit 22 for weeding an intrarow spacing in a planting row, and an interrow space weeding unit 23 for weeding between the planting rows. A sensing float 26 for detecting a lifting/lowering position of the weeding working machine 7 is characterized by being disposed at the side installing hydraulic equipment 16, 18 and a linkage mechanism 31 among the interrow spaces of planting row left and right in the left and right center in a rear view.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a weeding machine in which weeding machines capable of weeding between strains and streaks at the same time are connected so as to be able to move up and down.

  A weeding machine connected to the rear side of the traveling machine body so as to be able to move up and down; a hydraulic actuator for driving the weeding machine machine up and down; and a hydraulic device arranged near the left and right of the traveling machine body and controlling the operation of the hydraulic actuator And a sensing float that detects the ascending / descending position of the weeding work machine by swinging operation by grounding to the farm scene side, the weeding work machine is an inter-weeding part that performs weeding work between the stocks on the planting line And the weeding machine of patent document 1 which has the inter-weeding part which is each arrange | positioned between the weeding parts between plants | stocks adjacent by a back view, and performs the weeding operation | work between planting line | rows is conventionally well-known.

Japanese Patent No. 4866651

  According to the above document, the lifting position of the weeding machine can be adjusted so that the inter-strain weeding part and the streak weeding part act smoothly on the field side by the sensing float provided in the center in the left-right direction of the weeding machine. However, since the sensing float is usually arranged at the center in the left-right direction, if an attempt is made to construct a weeding machine capable of simultaneously weeding an odd number of rows of planting in one stroke, the right and left of the weeding machine There was a problem that the sensing float provided in the center interfered with the right and left centering row.

  In the present invention, by connecting a weeding machine equipped with a weeding part between strains and a weeding part between streaks so as to be able to move up and down, in the weeding machine capable of weeding between the streak and the streak at the same time, one odd number of planting rows are arranged. The problem is to provide a weeder that can smoothly weed in the process.

  In order to solve the above-described problems, the present invention firstly includes a weeding work machine 7 connected to the rear side of the traveling machine body 3 so as to be movable up and down, a hydraulic actuator 6 that drives the weeding work machine 7 up and down, and the traveling machine body. 3 and a sensing float 26 for detecting the ascending / descending position of the weeding machine 7 by swinging operation by grounding to the farm scene side. And the weeding machine 7 is disposed between the inter-weeding portion 22 for performing the weeding operation between the strains on the planting row, and the inter-weeding portion 22 adjacent in the rear view, and between the planting rows. In the weeding machine having the interstitial weeding unit 23 that performs the weeding work, the sensing float 26 and the hydraulic device 16 are linked so that the raising and lowering position of the weeding work machine 7 is controlled to the raising and lowering range in which weeding work is possible. Linkage The structure 31 is provided on the hydraulic equipment 16 side on the left and right of the traveling machine body 3, and the sensing float 26 is connected to the hydraulic equipment 16, 18 and the link among the right and left planting rows in the center in the rear view. It is characterized by being arranged on the side where the mechanism 31 is installed.

  Secondly, the weeding machine 7 has the sensing float 26 and the inter-row weeding portion 23 disposed on one side of the inter-row space between the right and left center in the rear view, and the other side. The interstitial weeding portion 23 is disposed, the leveling float 24 is disposed immediately behind the pair of rear wheels 2 and 2 that support the traveling machine body 3 in a rear view, and the interstitial weeding portion 23 is disposed at the left and right ends. It is characterized by that.

  Thirdly, the balance weight 47 is disposed on the rear side of the pair of rear wheels 2 and 2 that support the traveling machine body 3.

  In constructing a weeding machine capable of weeding between odd-numbered strains in a single stroke, it is possible to prevent the sensing float from interfering with the right and left centering row, and the sensing float is Since the left and right of the planting rows are arranged between the rows closer to the hydraulic device, the sensing float and the hydraulic device are arranged closer, thus simplifying the linkage mechanism. And it can comprise compactly.

  In addition, the weeding machine has the sensing float and the inter-row weeding portion disposed on one side of the inter-row inter-row between the left and right center in the rear view, and the inter-row weeding portion on the other side. The ground leveling float is disposed immediately behind the pair of rear wheels that support the traveling vehicle body in rear view, and the streak weeding part is disposed at the left and right ends. Since the float is efficiently arranged only in a necessary portion, the entire weeding machine can be configured in a compact manner.

  In addition, according to what arranged the balance weight in the back side of a pair of rear wheels that support the traveling machine body, the balance weight can be efficiently arranged in the empty space, so that the entire weeding work machine can be made compact and the weeding work Since the machine can act on the field side in a more stable state, the weeding work becomes smooth.

It is a side view of the weeding machine which connected the weeding work machine to the back of a run machine. It is a top view of the weeding machine which connected the weeding work machine to the back of the traveling machine body. It is the principal part side view which showed the working machine linkage mechanism and the float linkage mechanism. It is the side view which showed the attachment aspect of the sensing float. It is the front view which showed the attachment aspect of the sensing float.

  FIGS. 1 and 2 are a side view and a plan view of a weeding machine in which a weeding work machine is connected to the rear of the traveling machine body, and FIG. 3 is a side view of a main part showing the working machine linkage mechanism and the float linkage mechanism. . The weeding machine shown in the figure is connected to a traveling machine body 3 having a pair of left and right front wheels 1 and 1 and rear wheels 2 and 2, and is connected to a rear end portion of the traveling machine body 3 through a lifting link 4 so as to be movable up and down. And a weeding work machine 7 that is lifted and lowered by a lifting cylinder (hydraulic actuator) 6 composed of a cylinder, and the traveling machine body 3 includes five shoots N1, N2, N3, N4 for five rows planted in a field (paddy field). You can move across N5.

  The traveling body 3 is provided with a control unit 9 into which an operator gets behind a bonnet 8 surrounding an engine (not shown) on the front side. The control unit 9 includes a seat 11 on which an operator is seated, and a seat 11 A steering handle 12 provided at the front, a speed change lever 13 for operating the speed change, and a work equipment lever 14 provided on the side (right side) of the seat 11 for raising and lowering the weeding work equipment 7 are arranged. Yes.

  The work implement lever 14 is arranged on one of the left and right sides (right side in the illustrated example) of the seat 11 and is configured to be able to swing back and forth. The machine can be lifted and lowered manually and automatically moved up and down following the farming scene.

  More specifically, a hydraulic device such as a hydraulic lift valve 16 that controls the expansion and contraction operation of the lift cylinder 6 is disposed on the right side surface below the seat 11 of the traveling machine body 3. The hydraulic lift valve 16 is configured to be operated via a work machine interlocking mechanism 15 that interlocks with a swing operation.

  The work implement interlocking mechanism 15 is provided on the base end side of the work implement lever 14, and includes a hydraulic operation cam 17 that rotates according to a forward / backward swing operation of the work implement lever 14 and the hydraulic lift valve 16. The valve arm 18 to be controlled, the contact pin 19 that contacts the lower front side of the hydraulic operation cam 17 and rotates integrally with the valve arm 18, and the hydraulic operation cam 17 via the contact pin 19. And a tension spring 21 that is biased so as to abut on the side (see FIG. 3).

  According to this configuration, the valve arm 18 is constantly urged to abut against the hydraulic operation cam 17 side via the abutment pin 19, so that the work implement lever 14 is operated to swing forward. When the valve arm 18 is rotated so as to keep the contact pin 19 in contact with the hydraulic operation cam 17 by the urging force of the tension spring 21, and the work implement lever 14 is operated to swing backward, The valve arm 18 is rotated in a direction against the urging force of the tension spring 21 (counterclockwise in a side view of FIG. 3). As a result, when the work implement lever 14 is swung back and forth, the hydraulic lift valve 16 is operated, whereby the lifting of the weeding work implement 7 is manually operated.

  The weeding machine 7 includes a rake (inter-weeding section) 22 that performs inter-soil weeding operations along the planting line (shoots N1, N2, N3, N4, N5) and an adjacent planting line. A rotary weeding rotor (weeding section, weeding) 23 which performs weeding work on a certain streak (M1, M2, M3, M4, M5, M6), a leveling float 24 for leveling the running track, and a weeding work To attach and detach the sensing float 26 for detecting the raising / lowering position of the machine 7, the support part 27 for supporting the rake 22 and the weeding rotor 23, and the work machine hitch 29 on the traveling machine body 3 side (lifting link side). The work machine side hitch frame 28 is provided. Thereby, this weeder can perform the weeding work between the strains by the rake 22 and the weeding work by the weeding rotor 23 at the same time in the field where the cereals are planted.

  In addition, the weeding work machine 7 is moved up and down in response to the forward / backward swing operation of the work machine lever 14, and the field scene by the sensing float 26 during the weeding work by the weeding work machine 7. In response to this detection, the elevation height of the weeding machine 7 is automatically adjusted appropriately to a height suitable for the weeding work.

  In other words, the weeding machine 7 is connected to the sensing float 26 and the valve arm 18 (hydraulic lift valve 16) via a float linkage mechanism (linkage mechanism) 31 which will be described in detail later. The posture change following the 26 farm scenes is transmitted to the valve arm 18 so that the height position of the weeding machine 7 can be automatically adjusted. Specific configurations of the sensing float 26 and the float linkage mechanism 31 will be described later.

  The rake 22 is configured by arranging a plurality of curved elastic members (tines) symmetrically. Specifically, it has a pair of inner left and right inner tines 32, 32 facing inside, and outer tines 33, 33 arranged outside the left and right inner tines. The inner tine 32 and the outer tine 33 are formed in a curved shape so that a midway portion thereof swells outward, and a tip portion thereof is bent inward, so that the rake 22 as a whole has a shoot N1, N2. , N3, N4, and N5 (see FIG. 2).

  As a result, the rake 22 moves the weeder along the planting line in a state where the distal ends of the inner tine 32 and the outer tine 33 are inserted on the field side, so that the inner tine 32 and the outer tine 33 Can be used for weeding between and around the stock.

  More specifically, the inner tine 32 passes directly behind each shoot (between the stocks) and comes into contact with the stock of the seedling as the weeding machine travels. And then closed again by elastic force. Thereby, weeds existing between the strains can be scraped off. The outer tine 33 passes through a position away from the root of the shoot by a predetermined distance, and can scrape weeds at the side of the plant (the side of the plant).

  The weeding rotor 23 includes an inverted T-shaped rotor support part 34 and a weeding part 36 provided with a plurality of hard plate-like weeding bodies that are driven to rotate about a rotation axis. A pair of front and rear rotor support portions 34 are attached.

  As a result, when the weeding machine is driven in a state where the weeding rotor 36 is disposed between the strips so that the weeding part 36 is stuck in the field, the weeding part 36 is driven to rotate, thereby removing the weeds in the field. Can be removed.

  The leveling float 24 is disposed on the rear side of the rear wheel 2 between the striations (M2, M5) through which the pair of left and right rear wheels 2, 2 pass, and the leveling float 24 travels when traveling on a farm field. It is comprised so that a trace may be leveled (refer FIG. 2). Thereby, in the streak (M2, M5) where the leveling float 24 is arranged, the weeds are pushed into the soil by passing the front wheel 1 and the rear wheel 2, and then the leveling of the wheel marks of the leveling float 24 is performed. The surrounding weeds are weeded by being embedded in the wheel marks.

  The sensing float 26 is configured such that the front side can swing up and down, and the hydraulic lift valve 16 is operated in an interlocked manner via the float linkage mechanism 31 by a change in inclination in the front-rear direction (sensing of a farm scene). It is configured.

  The float linking mechanism 31 is disposed on the lower side of the valve arm 18 so as to rotate the valve arm 18 and is connected to the operation arm 37 so that the weeding machine is lifted by the lifting cylinder 6. And a hydraulic pressure sensing wire 39 having one end connected to the operating arm 37 and the other end connected to the front side of the sensing float 26 (see FIG. 3). .

  With this configuration, the weeding machine 7 operates the hydraulic lift valve 16 according to the height position of the weeding machine 7 based on the detection of the field scene by the sensing float 26 and the state of the field, It is configured to automatically adjust the lift position. A specific mounting configuration of the sensing float 26 will be described later.

  In addition, the sensing float 26 is configured to be disposed in the right and left right-hand strips (M4) of the planting row (N3) that comes to the center of the weeding machine 7 during the weeding operation (see FIG. 2). . Thereby, when constructing a weeding work machine having an odd number of planting lines, it is possible to avoid that the sensing float 26 normally arranged at the center in the left and right interferes with the planting line (N3) in the left and right center.

  Further, since the sensing float 26 is disposed at the same position on the right and left sides as the hydraulic lift valve 16, the distance between the sensing float 26 and the hydraulic lift valve 16 is reduced, and these are mechanically linked. The float linkage mechanism 31 can be configured with a minimum number of members.

  The support portion 27 includes a pair of left and right support frames 41, 41 extending rearward from the work machine side hitch frame 28 provided on the rear end of the lifting link 4 on the front end side, and a midway portion of the support frame 41. A rolling frame 42 made of a square pipe that is attached to the upper surface side of the traveling body 3 and extends in the width direction (left-right direction) of the traveling machine body 3, and is supported by a middle part in the left-right direction of the rolling frame 42 and extends rearward. A pair of left and right extending frames 43 and 43, which are provided plate-like members, and support rods 44A, 44B and 44C supported so as to be bridged between the pair of extending frames 43 are provided. .

  A plurality of mounting frames 46 extending in the vertical direction are attached to the rolling frame 42 so that the vertical position of the rolling frame 42 can be adjusted. , M4, M5, and M6), the weeding rotor 23 and the leveling float 24 are arranged according to the interval.

  More specifically, the weeding rotor 23 is attached to the rolling frame 42 via an attachment frame 46 located between the outermost left and right strips (M1, M6). Further, the leveling float 24 is attached to an attachment frame 46 located between the left and right inner strips (M2, M5) adjacent thereto. Furthermore, the weeding rotor 23 is attached to the attachment frame 46 located in the left-hand stripe (M3) among the pair of left and right stripes located in the center (see FIG. 2).

  Further, on the rear end side of the support frame 41, a mounting frame 46A for disposing the weeding rotor 23 on the rear side of the sensing float 26 is provided in the gap (M4) where the sensing float 26 is disposed. . That is, among the strips (M3, M4) adjacent to the planting strip (N3) passing through the center of the weeding work machine 7, the right and left strips (M4) include the sensing float 26 and the weeding rotor 23. Are arranged side by side (see FIG. 2).

  The support rod 44 is attached to the front halfway portion and the rear halfway portion of the extension frame 43 and has a first support rod 44A and a second support rod 44B having a length corresponding to at least five shoots, and an extension frame. 43, and a third support rod 44C that is shorter than the other support rods, and each support rod 44 has a planting row (N1, N2, N3, N4) for performing weeding work. , N5), a pair of front and rear rakes 22 are respectively mounted on the top.

  Specifically, the pair of front and rear side rakes 22B and 22C for weeding the left and right planting rows (N1, N5) and the second planting row (N2) from the left are the first support. A pair of front and rear central rakes 22A attached to the rod 44A and the second support rod 44B and weeding a planting row (N3, N4) forming a space (M4) in which the sensing float 26 is disposed, The second support rod 44B and the third support rod 44C are attached.

  That is, according to the above-described configuration, only the central rake 22A for weeding the planting row (N3, N4) constituting the row (M3) in which the sensing float 26 and the weeding rotor 23 are arranged forward and backward is used for the other rakes. By being arranged slightly rearward, a space for installing the sensing float 26 can be efficiently formed.

  Incidentally, a pair of left and right balance weights 47, 47 are attached to the first support rod 44A on the rear side of the leveling float between the strips (M2, M5) where the leveling float 24 is disposed. Thereby, the weeding work machine 7 can be made to act on the field side in a more stable state.

  Further, since the balance weight 47 is disposed on the rear side of the leveling float 24, which does not require a separate weeding rotor 23, there is no waste of space to be used, and the entire weeding work machine 7 is configured in a compact manner. can do. Further, since the balance weight 47 is attached by using an unused portion of the first support rod 44A on which the rake 22 is supported, a part for supporting the balance weight 47 needs to be prepared separately. The cost can also be kept low because parts can be used together.

  Next, with reference to FIG. 4 and FIG. 5, an attachment mode of the sensing float 26 that can be attached to the work implement side hitch frame 28 will be described. 4 and 5 are a side view and a front view showing how the sensing float is attached. As shown in the drawing, the work machine side hitch frame 28 is provided with an attachment mechanism for attaching the sensing float 26 so as to be able to roll.

  The attachment mechanism includes a rolling shaft 51 supported on the lower side of the work implement side hitch frame 28 and a rear side of the work implement side hitch frame 28 so as to rotate integrally with the rolling shaft 51. A bracket 52 that swings left and right relative to the machine-side hitch frame 28, and a U-shaped locking member that has one end attached to the upper side of the bracket 52 and the other end provided on the upper side of the work machine-side hitch frame 28. A pair of left and right tension springs 54, 54 locked to 53 are provided. As a result, the bracket 52 is supported so as to be able to roll in the left-right direction with respect to the work implement side hitch frame 28, and is configured to be biased to a side perpendicular to the work implement side hitch frame 28. Has been.

  The sensing float 26 is attached to the bracket 52 having such a configuration via a horizontal plate-like float attachment portion 56 provided in the middle of the bracket 52 so as to penetrate the lower portion of the bracket 52 in the left-right direction. The support frame 41 is attached via the provided support shaft 57.

  The float attachment portion 56 is provided with a plate-like bending support portion 58 bent toward the lower right side on the right end side. The lower end side of the bending support portion 58 is further behind the sensing float 26 on the lower side. A plate-like rear support portion 59 extending to the end side is connected by bolting, and the rear support portion 59 is connected to the rear end side of the sensing float 26 in a rotatable manner.

  Further, the float attachment portion 56 is attached to a wire support portion 61 extending to the upper front side on the right end side, and a plate-like front side extending toward the midway portion in the front-rear direction of the lower sensing float 26 A support 62 is attached.

  The front support portion 62 has a connecting pin 64 provided at the lower end thereof inserted into a connecting hole 63a formed in a U-shaped connecting portion 63 provided in the middle of the upper surface of the sensing float 26. It is configured to be connectable to the sensing float 26 side (see FIG. 5). At this time, a plurality of the connection holes 63a are formed in the vertical direction, and the initial posture of the sensing float 26 can be adjusted by changing the connection holes 63a through which the connection pins 64 are inserted (FIG. 4). reference).

  Further, the end portion side of the hydraulic pressure sensing wire 39 is connected to the connecting portion 63 having the above configuration via a tension spring 66 described later. More specifically, the front support portion 62 is provided with a tension spring 66 disposed along the front support portion 62, and the lower end side of the tension spring is connected to the sensing float 26 side via the connection pin 64. The upper end side of the tension spring 66 is connected to a locking pin 67 inserted into a long hole 62 a formed in the upper part of the front support portion 62, and one end of the hydraulic pressure sensing wire 39 is connected to the locking pin 67. The sides are connected.

  According to this configuration, for example, when the field is muddy and the resistance received by the sensing float 26 decreases, and the front side of the sensing float 26 sinks to the field side, the hydraulic sensing wire 39 is attached to the tension spring 66. Since it is pulled against the force, the operating arm 37 is slightly rotated in the direction against the urging force of the tension spring 38 via the float linkage mechanism 31, and thereby the weeding machine is slightly raised. On the other hand, when the field is hard and the front side of the sensing float 26 faces upward, the hydraulic sensing wire 39 is loosened, so that the operating arm 37 follows the biasing force of the tension spring 38 via the float linkage mechanism 31. The weeding machine is slightly lowered.

  In addition, since the attachment mechanism that connects the sensing float 26 and the float linkage mechanism 31 is arranged toward the left and right outside of the center of the weeding work machine 7 (see FIG. 5), the sensing float 26 and the float linkage mechanism are arranged. The connection work and adjustment work with 31 can be performed more smoothly.

3 traveling machine body 6 hydraulic cylinder (hydraulic actuator)
7 Weeding machine 16 Hydraulic lift valve (hydraulic equipment)
26 Sensing float 22 Rake (weeding part between stocks)
23 Weeding rotor (Hojo Weeding Department)
24 Leveling float 31 Float linkage mechanism (linkage mechanism)
47 Balance Weight

Claims (3)

A weeding machine (7) connected to the rear side of the traveling machine body (3) so as to be movable up and down;
A hydraulic actuator (6) for raising and lowering the weeding machine (7);
Hydraulic equipment (16, 18) disposed on the left or right side of the traveling machine body (3) and controlling the operation of the hydraulic actuator (6);
A sensing float (26) for detecting the ascending / descending position of the weeding machine (7) by swinging operation by grounding to the farm scene side,
The weeding machine (7) is disposed between the inter-weeding portion (22) for performing the weeding operation between the plants on the row of planting rows and the inter-plant weeding portion (22) adjacent in rear view, and the planting strips In a weeding machine having a row weeding section (23) that performs weeding work between rows,
A linkage mechanism (31) for linking the sensing float (26) and the hydraulic device (16) so that the raising / lowering position of the weeding machine (7) is controlled within a lifting range in which weeding work is possible. Provided on the hydraulic equipment (16) side on the left and right of (3)
The sensing float (26) is arranged on the side where the hydraulic devices (16, 18) and the linkage mechanism (31) are installed in the space between the right and left planting rows in the middle in the rear view. Weeding machine. The weeding machine (7)
The sensing float (26) and the inter-row weeding portion (23) are arranged on one side among the left and right inter-row planting rows at the center of the left and right, and the inter-row weeding portion (23) is arranged on the other side. Arranged,
A leveling float (24) is disposed directly behind the pair of rear wheels (2, 2) supporting the traveling machine body (3) in a rear view,
The weeding machine according to claim 1, wherein a streak weeding portion (23) is disposed at the left and right ends. The weeding machine according to any one of claims 1 and 2, wherein balance weights (47) are respectively arranged immediately behind the pair of rear wheels (2, 2) supporting the traveling machine body (3).

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