JP2017205088A - Paddy weeding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paddy weeding machine that can be folded small with good space efficiency.SOLUTION: A paddy weeding machine is formed by providing a weeding device 3 containing an interrow space weeding mechanism 12 in a riding traveling machine body. The riding traveling machine body is constituted in a freely traveling manner in a paddy field by a monocyclic front wheel 2a and a pair of left and right rear wheels 2b. The interrow space weeding mechanism 12 includes interrow space rotors 16 corresponding to multiple interrow spaces rotated and driven centering on an interrow space rotor drive shaft 15 pivoted horizontally, respectively. The interrow space rotors 16 corresponding to the interrow spaces where front wheels 2a and rear wheels 2b are made to roll are formed by being divided in two to the left or right substantially directly above the traveling track T of the front wheels 2a and the rear wheels 2b. The weeding device 3 is constituted so that an outer side rather than substantially directly above the traveling track T of the rear wheels 2b is foldable upward to the central part through a support shaft, and the driving force to the interrow space weeding mechanism 12 is transmitted by a transmission mechanism 19 through a divided central gap in the interrow space rotors 16 corresponding to the interrow spaces where the front wheels 2a are made to roll.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a paddy weeder that efficiently and reliably performs paddy field weeding operations after transplanting seedlings.

  In order to increase the efficiency of weeding operations, weeding of weeders has been progressing. However, weaving machines become wider when they are striped, and they cannot be transported unless they are large trucks. There is a problem that it becomes necessary. For this reason, there is a method of disassembling and assembling the weeding mechanism using a tool every time it is transported or stored, but there is a problem that it takes much time and effort.

  Thus, a weeder has been proposed in which both sides of the weeding mechanism in the width direction are foldable so as to reduce the space required for transportation and storage (see, for example, Patent Document 1). This weeder has a four-wheel drive type riding traveling machine body with two front and rear wheels, and has a structure in which a weeding device is connected to the rear part of the machine body so as to be movable up and down. The driving force from the weeder main body to the weeding device is configured to be transmitted on the traveling track of each rear wheel that rolls between the strips. In the case of this configuration, the interstitial rotor for the interstrip is formed in two parts, and power is transmitted between the pair of interstitial rotors formed in a split manner. In order to provide a transmission mechanism that transmits a large driving force to the interstitial rotor or to provide a cover for antifouling to the transmission mechanism, it is necessary to ensure a sufficient space between the pair of interstitial rotors. Therefore, although the portion corresponding to the space between the pair of interstitial rotors cannot be weeded, it is configured to compensate by rolling the rear wheel there to exert a weeding action.

Japanese Patent No. 3624211

  However, since the weeding machine described in Patent Document 1 is configured to transmit the power to the weeding mechanism on the traveling track of each rear wheel, the folding position of the weeding mechanism is set to the outside. Inevitably, it was difficult to reduce the size when folded because of the limitation.

In order to solve the above-mentioned problem, a paddy weeding machine of the first invention is
A weeding device including a streak weeding mechanism that acts between streaks in planted shoots is a paddy weeder provided in a riding traveling machine body,
The passenger traveling machine body is configured to be able to travel in a paddy field with a front wheel that rolls between the striations and a pair of left and right rear wheels that roll on a striation different from the front wheels,
The inter-row weeding mechanism is provided with inter-row rotors respectively corresponding to a plurality of inter-rows that are rotationally driven around inter-row rotor drive shafts that are horizontally supported.
The inter-strip rotor corresponding to the inter-spindle rolling of the front wheel and the rear wheel is divided into two parts on the left and right substantially above the traveling track of the front wheel and the rear wheel,
The interstitial rotor drive shaft is configured such that a driving force is transmitted through a central gap divided in the interstitial rotor corresponding to the interstices on which the front wheels roll.
The weeding device is configured such that the outer side portion of the rear wheel substantially directly above the traveling track of the rear wheel can be folded upward via a support shaft extending in the front-rear direction with respect to the central portion.

According to this configuration, the weeding device is configured such that the outer side portion of the rear wheel substantially directly above the traveling track of the rear wheel can be folded upward with respect to the central portion thereof, so that the body of the paddy field weeding machine can be Can be folded efficiently and small. Even if it can be folded on the inner side of the running track of the rear wheel, the width of the fuselage at the time of folding does not become narrower than the width of the pair of the rear wheels. This is because it becomes longer and the height when it is folded upward becomes higher.
In addition, since the inter-strip rotor corresponding to the inter-spinning rolling of the front wheel and the rear wheel is formed to be divided into two parts on the right and left substantially immediately above the traveling track of the front wheel and the rear wheel. About the gap part by division, by stepping on the weeds between the streak with the front wheel or the rear wheel and embedding in the paddy field, weeding of the streak can be performed without an untreated region, and the weeding effect in that part is There is no decline.

As the paddy weeder of the second invention, in the first invention,
The support shaft and the outer portion can be integrally slidably moved between a working position and a folding position that are respectively set inward and outward in the left-right direction above the traveling track of the rear wheel. And it is configured to be able to fix the slide position integrally at each position,
In the weeding device, when the support shaft and the outer portion are in the working position, the driving means of the central portion and the outer portion are connected to each other, and the support shaft and the outer portion are in the folding position. In some cases, the driving means of the central portion and the outer portion are separated from each other, and the outer portion is configured to be foldable upward via the support shaft.

  According to this structure, connection and disconnection of the drive means of the said center part and the said outer part in the said weeding apparatus can be performed easily.

  According to the paddy weeder according to the present invention, there is an excellent effect that it can be folded in a small space efficiently.

1 is a front view of a paddy weeder according to an embodiment of the present invention. It is a side view of the paddy weeder. It is a front view of the working state of the weeding device of the paddy field weeding machine. FIG. 4 is a front view showing a state in which both outer side portions of the weeding device in FIG. 3 are slid outward in the left-right direction. It is a front view which shows the state which folded up both the outer side parts of the weeding apparatus in FIG. 4, respectively upwards. It is a top view which shows the connection state of 2 motive power systems and the height adjustment mechanism of the weeding apparatus in FIG. It is a top view which shows the detachment | leave state of two power systems and the height adjustment mechanism of the weeding apparatus in FIG. It is a perspective view of the weeding device in FIG. It is a front view which shows the state (state locked to the working position by the locking means) of the folding mechanism of the right side of the weeding apparatus in FIG. FIG. 10 is a front view showing a state in which the locking means in FIG. 9 is released. It is a front view which shows the state (state locked to the folding position by the locking means) of the folding mechanism of the right side of the weeding apparatus in FIG. It is a front view which shows the state of the folding mechanism of the right side of the weeding apparatus in FIG. It is a top view which shows the example of a change of the weeding apparatus.

  FIGS. 1-12 has shown the paddy weeder 1 of one Embodiment which actualized this invention, and the arrow F has pointed out the body front side in each figure. As shown in FIG. 1 and FIG. 2, the paddy weeder 1 includes a riding traveling machine body 2 configured to be able to travel in paddy fields, and a weeding device 3 is provided at a substantially central portion of the riding traveling machine body 2. It has become.

  The passenger traveling machine body 2 is configured to be able to travel by a single front wheel 2a that rolls between the strips and a pair of left and right rear wheels 2b that rolls between the strips different from the front wheels 2a. The weeding device 3 of this example is supported so as to be movable up and down with respect to the riding traveling machine body 2 between the front wheel 2a and the rear wheel 2b.

  As shown in FIGS. 3 to 8, the weeding device 3 includes a frame 10 that extends in the left-right direction, and the frame 10 has a sled 11 that is connected to both sides thereof, and a strip that acts between the strips in the planting shoots. The inter-weeding mechanism 12 and the inter-strain weeding mechanism 13 acting between the strains in the planted shoots are supported. The weeding device 3 includes a folding mechanism 25, whereby the outer portion 3 b is configured to be foldable upward with respect to the central portion 3 a of the outer portion 3 b of the rear wheel 2 b. .

  The inter-row weeding mechanism 12 includes inter-row rotors 16 that are rotationally driven around inter-row rotor drive shafts 15 that are horizontally supported, and have relative vertical positions with respect to the frame 10. An elevating mechanism 17 for adjusting by an elevating lever is provided. The inter-row rotors 16 are arranged at the same pitch as the inter-strip pitch so as to be positioned between the strips of the planted seedlings N. Of the group of interstitial rotors 16, the interstitial rotor 16 corresponding to the interstices on which the front wheels 2 a and the rear wheels 2 b roll are formed into two parts on the right and left substantially immediately above the traveling track T of the front wheels 2 a and the rear wheels 2 b. Yes. About the space | gap part by this division | segmentation, weeding of a streak can be performed without an un-processed area | region by stepping on the weed of a streak with the front wheel 2a or the rear wheel 2b, and embedding it in a rice field. The driving force applied to the inter-row weeding mechanism 12 is transmitted by the transmission mechanism 19 through a central gap divided in the inter-strip rotor corresponding to the inter-row where the front wheel 2a rolls. When the weeding device to be described later is folded, the interstitial weeding mechanism 12 has an interstitial rotor drive shaft 15 substantially directly above the traveling track T of the rear wheel 2b, that is, at the center of the interstitial rotor 16 formed in two parts. The weeding device 3 is configured to be separable into the central portion 3a side and the outer portion 3b side. In this example, the tip 15a on the central portion 3a side of the interstitial rotor drive shaft 15 is formed as a prism, and the tip 15b of the outer portion 3b is formed in a square tube in which the prism can be inserted so as not to be relatively rotatable. Accordingly, the weeding device 3 is configured to be detachable in the left-right direction.

  The lifting mechanism 17 is configured to be separable into the central portion 3a side and the outer portion 3b side of the weeding device 3 just above the traveling track T of the rear wheel 2b when the weeding device described later is folded. The raising / lowering mechanism 17 of this example is integrally driven up and down on the central part 3a side and the outer side part 3b side via a raising / lowering drive shaft 18 extending in the left-right direction. The elevating drive shaft 18 is configured to be separable into the central portion 3a side and the outer side portion 3b side of the weeding device 3 just above the traveling track T of the rear wheel 2b when the weeding device 3 to be described later is folded. ing. In this example, the tip 18a on the central portion 3a side of the elevating drive shaft 18 is formed in a column, and the tip 18b of the outer portion 3b is formed in a cylinder into which the column can be inserted. It is configured to be detachable in the left-right direction.

  The inter- stock weeding mechanism 13 is a swinging tooth that swings left and right with respect to the traveling direction as the left and right inter-strain tooth drive shafts 21 pivoted horizontally. The inter-plant weeding mechanism 13 is configured by attaching a tooth 23 formed by suspending a wire rod downward to a movable frame 22 that reciprocates left and right with respect to the traveling direction of the riding traveling machine body 2. A plurality of pairs of teeth 23 are arranged in parallel on the left and right sides so that a plurality of them act each time. The driving force for the inter-strain weeding mechanism 13 is transmitted to the center side end portion of the weeding device 3 in the inter-strain tooth drive shaft 21 by a transmission mechanism (not shown). The inter-plant weed driving shaft 21 of the inter-plant weeding mechanism has a central portion 3a side and an outer portion 3b side of the weeding device 3 at a position almost immediately above the traveling track T of the rear wheel 2b when the weeding device 3 described later is folded. It is configured to be separable. In this example, the tip 21a on the central portion 3a side of the stock tooth drive shaft 21 is formed as a prism, and the tip 21b of the outer portion 3b is formed in a square tube into which the prism can be inserted so as not to be relatively rotatable. Thus, the weeding device 3 is configured to be detachable in the left-right direction.

  As shown in FIGS. 9 to 12, the folding mechanism 25 includes guide holes 26 that are provided at both ends of the center portion and extend in the left-right direction, and above the traveling track T of the rear wheel 2b. The slider 27 is provided so as to be slidable along the guide hole 26 between the working position P1 and the folding position P2 which are respectively set with a space inward and outward in the left-right direction, and the slider 27 The rotary piece 29 is pivotally supported by a pivot 28 extending in the front-rear direction so as to be pivotable upward, and the outer portion 3b is connected to the distal end side. A slide position fixing means 30 for fixing the slide position at each of the positions P2 and a damper means 31 provided between the slider 27 and the rotating piece 29 are provided. When the slider 27 is moved to the folding position P2, the outer portion 3b is also moved through the rotating piece 29, so that it is separated from the central portion 3a. At this time, substantially directly above the traveling track T of the rear wheel 2b. By the way, the interstitial rotor drive shaft 15, the elevating mechanism 17, and the stock tooth drive shaft 21 are separated into the central portion side and the outer portion 3b side, respectively. The slide position fixing means 30 includes a lock lever 32 that is pivotally supported at the center so as to be pivotable to the left and right. The lock lever 32 has a first protrusion 29a provided on the rotary piece 29 at the working position P1. A first locking claw 32a to be locked and a second locking claw 32b to lock the support shaft 28 at the folding position P2 are provided. The damper means 31 prevents abrupt movement of the outer side part 3b with respect to the central part 3a during rotation. Further, the damper means 31 has a fixing bracket 33 (shown only in FIG. 12) as a folding position fixing means for fixing in an expanded state when the outer portion 3b is folded upward with respect to the central portion 3a. Is provided.

  Next, the folding method and assembly method of the weeding device 3 of the paddy weeder 1 of this example will be described. Here, it is assumed that the weeding device 3 is in a working state before folding (see FIGS. 1, 3, 6, and 9). First, the slider 27 is unlocked by operating the lock lever 32 to remove the first locking claw 32a from the first protrusion 29a (see FIG. 10). Subsequently, the slider 27 and the support shaft 28 are moved from the working position P1 to the folding position P2 by moving the outer portion 3b outward in the left-right direction (see FIGS. 4 and 7). Next, by operating the lock lever 32, the support shaft 28 is locked by the second locking claw 32b, and the slider 27 and the support shaft 28 are fixed to the folding position P2 (see FIG. 11). Next, the outer portion 3b is rotated upward, and the expansion / contraction state of the damper means 31 is fixed by the fixing bracket 33 (see FIGS. 5, 8, and 12). Then, folding is completed. In addition, the assembly method of the weeding apparatus 3 should just reverse the above method.

According to the paddy weeder 1 of the present example configured as described above, the weeding device 3 has the outer portion 3b folded upward with respect to the central portion 3a of the outer portion 3b of the rear wheel 2b. Since it is configured to be possible, the body of the paddy weeder 1 can be folded in a small space efficiently. Even if it can be folded inside the traveling track T of the rear wheel 2b, the width of the airframe during folding will not be narrower due to the presence of the pair of rear wheels 2b, and if it is folded inside the outer side 3b This is because the length becomes longer and the height when folded upward becomes higher.
In addition, since the inter-strip rotor 16 corresponding to the inter-spindle rolling of the front wheel 2a and the rear wheel 2b is formed to be divided into two parts on the right and left substantially immediately above the traveling track T of the front wheel 2a and the rear wheel 2b. About the space | gap part by this division | segmentation, by stepping on the weed of the streak with the front wheel 2a or the rear wheel 2b and embedding in a paddy field, weeding of a streak can be performed without an untreated area | region, and the weeding effect in that part Will not drop.

  Further, the support shaft 28 and the outer portion 3b are between a work position P1 set substantially immediately above the traveling track T of the rear wheel 2b and a folding position P2 set to the outside in the left-right direction of the work position. The weeding device 3 is configured to be slidable and fixed so that it does not slide at each position. The weeding device 3 has a central portion 3a and an outer portion 3b when the support shaft 28 and the outer portion 3b are at the working position P1. When the drive means are connected and the support shaft 28 and the outer portion 3b are in the folding position P2, the drive means of the central portion 3a and the outer portion 3b are separated from each other, and the outer portion 3b is interposed via the support shaft 28. And can be folded upward. According to this structure, connection and disconnection of the drive means of the center part 3a and the outer side part 3b in the weeding apparatus 3 can be performed easily.

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) Realizing the inter-strain weeding mechanism 13 by means different from the swinging tooth (for example, a chain suspended in a paddy field)
(2) The left and right front wheels 2a and 2b, and the right front wheel 2a and rear wheel 2b are the same as each other. In contrast to the paddy field weeding machine in which the weeding device 3 is provided on the riding traveling machine body 2 configured to roll between, as shown in FIG. 13, the front wheel 2a and the rear wheel 2b roll between the strips. The corresponding interstitial rotor 16 is divided into two parts on the right and left just above the traveling track T of the front wheel 2a and the rear wheel 2b, and the weeding device 3 is disposed almost directly above the traveling track T of the rear wheel 2b. The outer portion 3b should be configured to be foldable upward with respect to the central portion 3a. In this case, the interstitial rotor drive shaft 15 is configured such that the driving force is transmitted by the transmission mechanism 19 through the end portion in the left-right direction of the weeding device 3. With this configuration, the same effect as that of the first invention can be obtained.

DESCRIPTION OF SYMBOLS 1 Paddy weeder 2 Passenger traveling machine body 2a Front wheel 2b Rear wheel 3 Weeding device 3a Center part 3b Outer part 10 Frame 11 Sled 12 Interstitial weeding mechanism 13 Inter-strain weeding mechanism 15 Inter-row rotor drive shaft 15a Tip 15b Tip 16 Inter-spindle rotor 17 Elevating mechanism 18 Elevating drive shaft 18a Tip 18b Tip 19 Power transmission mechanism 21 Stock tooth drive shaft 21a Tip 21b Tip 22 Movable frame 23 Tooth 25 Folding mechanism 26 Guide hole 27 Slider 28 Support shaft 29 Rotating piece 29a First projection 30 Slide position Fixing means 31 Damper means 32 Lock lever 32a First locking claw 32b Second locking claw 33 Fixing bracket F Arrow N Seedling P1 Working position P2 Folding position T Traveling track

Claims (2)

A weeding device including a streak weeding mechanism that acts between streaks in planted shoots is a paddy weeder provided in a riding traveling machine body,
The passenger traveling machine body is configured to be able to travel in a paddy field with a front wheel that rolls between the striations and a pair of left and right rear wheels that roll on a striation different from the front wheels,
The inter-row weeding mechanism is provided with inter-row rotors respectively corresponding to a plurality of inter-rows that are rotationally driven around inter-row rotor drive shafts that are horizontally supported.
The inter-strip rotor corresponding to the inter-spindle rolling of the front wheel and the rear wheel is divided into two parts on the left and right substantially above the traveling track of the front wheel and the rear wheel,
The interstitial rotor drive shaft is configured such that a driving force is transmitted through a central gap divided in the interstitial rotor corresponding to the interstices on which the front wheels roll.
The weeding device is a paddy weeding machine configured such that an outer side portion of the rear wheel substantially directly above the traveling track of the rear wheel can be folded upward via a support shaft extending in the front-rear direction with respect to the central portion. The support shaft and the outer portion can be integrally slidably moved between a working position and a folding position that are respectively set inward and outward in the left-right direction above the traveling track of the rear wheel. And it is configured to be able to fix the slide position integrally at each position,
In the weeding device, when the support shaft and the outer portion are in the working position, the driving means of the central portion and the outer portion are connected to each other, and the support shaft and the outer portion are in the folding position. 2. The paddy weeding machine according to claim 1, wherein the driving means of the central portion and the outer portion are separated from each other, and the outer portion is configured to be foldable upward via the support shaft.

Images