JP2012244932A - Planting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a planting machine that can simplify a shape of a cover body when a rotating member and an electrical component provided at a supporting member to swing a marker arm up and down are covered with the cover body to be protected.SOLUTION: The planting machine includes: a control part 43 which supports a marker arm 36 at a supporting member 41, and controls the lower side swinging of the marker arm 36; an electric actuator 44 which makes the control part 43 perform upper and lower turning operation through the rotating member 46; and a detection sensor 47 which detects the turning position of the rotating member 46, wherein the marker arm 36 is made to perform upper and lower swing with the control part 43 by a biasing member 42 which biases a marker arm 36 to a lower side. The marker arm 36 and the control part 43 are arranged at a front side of the supporting member 41, an electrical component 55 including the electric actuator 44 and the detection sensor 47, and the rotating member 46 are arranged at a rear side of the supporting member 41, and a cover body 48 which covers and protects the rotating member 46 and the electrical component 55 is provided.

Description

  The present invention relates to a planting work machine provided with a marker arm that is turned up and down by an electric actuator.

  The marker arm of the marker is supported by a support member so as to be able to swing up and down so that the marker that forms the planting reference line for the next process can be lifted from the field scene. A restricting portion for restricting the downward swing, a turning member for moving the restricting portion up and down, an electric actuator for driving the restricting portion up and down via the turning member, and a predetermined turning of the turning member A detection sensor for detecting the position, and by providing a biasing member that biases the marker arm downward and abuts the regulating portion, the marker arm is configured to swing up and down together with the regulating portion. A planting work machine described in Patent Document 1 which is characterized is known.

JP 2010-187579 A

In the planting machine of the above document, the marker arm is allowed to swing upward against the biasing force of the biasing member, and the marker moves up and down along the field scene. In addition to being able to draw the attached reference line efficiently, the marker arm, the restricting portion, the rotating member, the electric actuator, and the detection sensor are intensively arranged on a single support member. There is no need to provide them separately, and the number of parts can be reduced.
However, when the electrical component including the electric actuator and the detection sensor and the rotation member that are highly required to be protected are covered and held by the cover body, the electrical component and the rotation member are installed across the front and rear surfaces of the support member. Therefore, it is necessary to form the cover body in a complicated shape that straddles the front and rear of the support member, and it is also necessary to form a notch in the cover body in order to ensure the swing range of the marker arm. It is difficult to keep the cost low.

  The present invention provides a planting work machine capable of simplifying the shape of the cover body when the rotating member and the electrical component provided on the support member for swinging the marker arm up and down are covered and protected by the cover body. The issue is to provide.

  In order to solve the above problems, the present invention firstly supports the marker arm 36 of the marker so as to be able to swing up and down so that the marker that forms the planting reference line for the next process can be lifted from the field. A restricting portion 43 that is supported by the member 41 and abuts on the marker arm 36 and restricts the downward swing of the marker arm 36, a turning member 46 that vertically turns the restricting portion 43, and a turning member 46. An electric actuator 44 that drives the restricting portion 43 to rotate up and down, and a detection sensor 47 that detects a predetermined vertical turning position of the turning member 46, and urges the marker arm 36 downward to restrict the restricting portion. 43 is a planting work machine having a structure in which the marker arm 36 is vertically swung together with the restricting portion 43 by providing an urging member 42 to be brought into contact with the depressing member 43. ~ side In addition to the arrangement, the electrical component 55 including the electric actuator 44 and the detection sensor 47 and the rotation member 46 are disposed on the rear surface side of the support member 41, and a cover body 48 that covers and protects the rotation member 46 and the electrical component 55 is provided. It is characterized by that.

  Second, the front and rear of the rotating member 46 and the electrical component 55 are covered by the cover body 48 and the support member 41 by attaching the cover body 48 to the attachment portion 57 provided on the front surface of the support member 41. It is said.

  Thirdly, a rotating member 46 and an electrical component 55 are arranged above the horizontal frame 22 in the left-right direction on which the planting part 27 that performs the planting operation is supported. It is characterized by covering the lower part of the product 55.

  Fourth, the lower limit stopper 56 that determines the lowest swing position of the marker arm 36 is integrally formed on the front side of the support member 41.

  According to the above configuration, the rotating member and the electrical component that are highly required to be protected are arranged together on the rear surface side of the support member, and are covered with the cover body. There is no need to form the cover body in a shape that straddles the support member in the front and back as in the case of the distribution arrangement, and the cover body can be simplified and the cover body can be avoided by avoiding the swing range of the marker arm. Therefore, it is not necessary to form a notch or the like for ensuring the swing range of the marker arm in the cover body.

  If the front and back of the rotating member and the electrical component are covered by the cover body and the supporting member by attaching the cover body to the mounting portion provided on the front surface of the supporting member, the front of the rotating member and the electrical component is covered. There is no need to prepare a separate member in addition to the support member, the structure can be simplified by reducing the number of parts, and there is no need to cover the rotating member and the front side of the electrical component with the cover body. Can be further simplified. Moreover, since the attachment part of a cover body is provided in the front surface of the support member, attachment is easy.

  Further, if the rotating member and the electrical component are arranged above the horizontal frame in the left-right direction on which the planting unit that performs the planting work machine is supported, and the lower part of the rotating member and the electrical component is covered by the horizontal frame, There is no need to separately prepare a rotating member and a member that covers the lower side of the electrical component in addition to the horizontal frame, the structure can be simplified by reducing the number of parts, and the lower part of the rotating member and the electrical component can be reduced by the cover body. The shape of the cover body can be further simplified.

  If the lower limit stopper for determining the lowest swing position of the marker arm is integrally formed on the front side of the support member, the lower limit stopper for determining the lowest swing position of the marker arm is formed separately from the support member. There is no need to do so, and the configuration is simplified.

It is a side view of the riding rice transplanter to which the planting work machine of the present invention is applied. It is a front view of a planting work machine. It is a principal part side view which shows a rocking | fluctuation mechanism. It is a principal part side view which shows the arrangement structure inside the rocking | fluctuation mechanism. It is a principal part front view which shows a rocking | fluctuation mechanism. It is a principal part front view which shows the arrangement structure inside the rocking | fluctuation mechanism. It is a principal part front view which shows the working state of a marker apparatus.

Embodiments of the present invention will be described below based on the illustrated example.
FIG. 1 is a side view of a riding rice transplanter to which the transplanting machine of the present invention is applied, and FIG. 2 is a front view of the planting machine. The riding rice transplanter includes a traveling machine body 3 provided with a pair of left and right front wheels 1 and a rear wheel 2, a planting work machine 6 connected to a rear side of the traveling machine body 3 via a lifting link 4 so as to freely move up and down, A ground leveling work machine 7 disposed behind the rear wheel 2 and leveling the farm field in front of the planting work machine 6, and a preliminary work in front of the travel machine body that is disposed on the side of the traveling machine body 3 and descends downward and tilts backward. It is comprised from the preliminary | backup seedling stand 8 of the front-back direction which conveys a seedling back to the planting work machine 6 side.

  An engine (not shown) covered with a bonnet 9 so as to be freely opened and closed is mounted on the front portion of the traveling machine body 3, and a vertical center marker 11 is erected at the center of the front end of the bonnet 9.

  A steering handle 10 is arranged behind the bonnet 9 so that it can be steered so as to be close to the rear end of the bonnet 9, and a seat 12 on which an operator is seated is located behind the steering handle 10 by a predetermined distance. A travel speed change lever 16 is supported on the side of the steering handle 10 (more specifically, on the left side) so as to be swingable. A low position between the steering handle 10 and the seat 12 is A floor step 14 serving as a floor surface is formed. The traveling speed change lever 16 is configured to perform forward / reverse switching by a swinging operation and to perform a traveling speed change operation during forward and reverse travel.

  The leveling work machine 7 includes a plurality of rotor shafts 17 that are supported on the planting work machine 6 so as to be rotationally driven, and a prismatic shape (in the illustrated example, a hexagonal shape) having a regular polygonal shape when viewed from the side. And a leveling rotor 18 in the left-right direction. The plurality of leveling rotors 18 are mounted on the rotor shaft 17 so as to be aligned in the left-right direction, and are configured to rotate integrally with the rotor shaft 17. Moreover, the leveling rotor cover 21 curved toward the rear lower side is provided so as to cover the range from the upper side to the rear side of the leveling rotor 18 in a side view.

  The planting machine 6 projects a metal vertical frame 23 extending upward at left and right symmetrical positions in a horizontal columnar metal frame 22 extending in the left-right direction supported by the lifting link 4 so as to be freely rollable. Thus, the frame portion 24 is configured. On the side of the horizontal frame 22, the above-described seedling mounting table 26 that is steeply inclined upward is supported. In addition, the seedlings on the seedling mounting table 26 are scratched below the seedling mounting table 26. A plurality of planting portions 27 to be taken and planted in the farm field, and a grounding float 28 and the like that are grounded to the farm field and determine the planting depth are arranged in parallel on the left and right. Further, on both the left and right sides of the horizontal frame 22 are provided marker devices 29 for forming the next planting process index linearly in the field scene.

  At the time of planting work, the planting operation is carried out while the traveling machine body 3 is moved forward so that the index and the center marker 11 overlap each other when viewed from the seat 12, thereby extending the traveling machine body 3 in the forward traveling direction. Seedlings are planted sequentially at regular intervals in the row. That is, the index serves as a travel reference line indicating the travel position of the traveling machine body 3 in the next process and a planting reference line indicating the seedling planting position in the next process. By the way, when the traveling body 3 reaches the end of the field in the planting row direction by advancing along the index, it makes a U-turn and becomes an index next to the current index (index for the next planting process). The traveling body 3 is moved forward along the indicator, and the next planting process is started. In addition, in a single planting process, seedlings are planted together in a plurality of planting rows set at equal intervals, and the current planting process → next planting process → next planting By proceeding with the steps →..., Seedlings are sequentially planted in a planting line set at regular intervals in the field.

  Each planting part 27 is fixed to the side of the horizontal frame 22 and extends toward the rear side. The planter case 31 is attached to the rear side of the planter case 31 and is mounted on the body side of the riding rice transplanter. The rotary case 32 rotated by the power transmitted from the plant, the planter arms 33 provided at both ends thereof, and the seedlings 26 are scraped off from the seedling mount 26 by the rotation of the rotary case 32 and attached to the planter arms 33. It is comprised from the planting nail | claw 34 planted in.

  As described above, the riding rice transplanter performs leveling of the farm field by grounding and rotating the ground leveling rotor 18 on the farm field roughened by turning the machine body during planting work, and leveling using the planting work machine 6 Plant seedlings in later fields.

Next, the marker device will be described in detail with reference to FIGS.
3 is a side view of the main part showing the swing mechanism, FIG. 4 is a side view of the main part showing the arrangement of the swing mechanism inside, and FIG. 5 is a front view of the main part showing the swing mechanism. FIG. 6 is a main part front view showing an arrangement configuration on the inner side of the swing mechanism, and FIG. 7 is a main part front view showing a working state of the marker device. The marker device 29 includes a marker arm 36 disposed on the left and right ends of the horizontal frame, a wheel-shaped marker (not shown) rotatably supported on the tip of the marker arm 36, and a base end side as a fulcrum. A swing mechanism 37 is provided for supporting the marker arm 36 on the left and right ends of the horizontal frame 22 so that the entire marker arm 36 swings up and down in the left-right direction.

  The marker device 29 swings the marker arm 36 downward to the left and right outside via the swing mechanism 37, so that the marker is swung out to the outer side of the traveling machine body 3 and the planting work machine 6 and touches the field scene. Thus, the marker arm 36 is switched to a swinging posture in which the marker arm 36 faces in the left-right direction, and the marker arm 36 is swung upward inward in the left-right direction via the swinging mechanism 37, so that the marker is on the side of the planting work machine 6. The marker arm 36 is switched to the storage posture in which the marker arm 36 is directed in the vertical direction. By the way, the marker of the marker device 29 switched to the swinging posture rotates as the traveling body 3 moves forward, and draws an index of the next planting process to the field scene.

  The vertical frame 23 is provided with connecting rods 38 for connecting the upper end sides of the left and right vertical frames 23 to the left and right. The markers of the marker device 29 are in the storage posture on the left and right sides of the connecting rod 38, respectively. A holding arm 39 is attached to hold the marker arm 36 so as not to swing downward when switched (see FIG. 2). By fixing the marker arm 36 in this way, it is possible to prevent the marker from being unexpectedly shaken out to the side of the machine body at times other than during work.

  The rocking mechanism 37 is a plate-like support bracket (fixed with a bolt on the front side of the horizontal frame 22 and extended toward the front upper side so as to be substantially parallel to the seedling mount 26 in a side view. Support member) 41, a tension spring (biasing member) 42 that biases the marker arm 36 downward, a restricting portion 43 that restricts downward swinging of the marker arm 36 biased downward, a marker An electric motor (electric actuator) 44 for swinging the arm 36 upward, a sector gear (rotating member) 46 for vertically swinging the restricting portion 43 in the left-right direction, and the marker arm 36 swinging up and down to a predetermined position The upper position detection switch 47A and the lower position detection switch 47B which are detection sensors for detecting the electric motor 44 and the two position detection switches 47A and 47B are covered from the upper side. And a cover body 48.

  The electric motor 44, the upper position detection switch 47A, and the lower position detection switch 47B are connected to a position closer to the left and right inner sides of the upper rear surface of the support bracket 41 via a support plate 45 provided integrally with the support bracket 41. On the other hand, the sector gear 46 is mounted and supported at a position near the left and right outer sides of the rear surface upper portion of the support bracket 41 so as to be turnable in the left and right directions. The sector gear 46 is always meshed with one gear (not shown) of the gear box 50 to which the power of the electric motor 44 is input, so that the power of the electric motor 44 is transmitted to the sector gear 46.

  Further, since the electrical component 55 and the sector gear 46 are arranged on the rear surface side of the support bracket 41 extending from the horizontal frame 22 toward the front upper side, the lower side thereof is covered by the horizontal frame 22 and the front side thereof is covered. The side is covered by the support bracket 41.

  The restricting portion 43 is attached and fixed to a front end portion of a rotation shaft 49 in the front-rear direction pivotally supported by the support bracket 41 in a state of passing through the front and rear surfaces of the support bracket 41. A sector gear 46 is attached and fixed to the rear end side of 49. In other words, the restricting portion 43 disposed on the front surface of the support bracket 41 and the sector gear 46 disposed on the rear surface of the support bracket 41 are integrally rotated up and down around the rotation shaft 49 in the front-rear direction. The support bracket 41 is supported by each. In other words, the sector gear 46 is integrally configured to vertically rotate the restricting portion 43 in the left-right direction, and the electric motor 44 drives the restricting portion 46 to rotate up and down via the sector gear 46.

  The configuration of the restricting portion 43 will be described in more detail. The restricting portion 43 has an L shape in which a tip portion that is an end opposite to the rotation shaft 49 is bent at the rear side (marker arm 36 side). It is comprised from the contact member 51 of this.

  In addition, a proximal end member 52 that is bent in a U-shape is provided on the proximal end side of the rod-shaped marker arm 36 so that the proximal direction is opened and the front and rear faces each other. The base end member 52 is disposed between the contact member 51 and the front surface side of the support bracket 41 in a side view, and a middle portion of the rotation shaft 49 in the front-rear direction rotates on the base end member 52. It is inserted freely. In other words, the marker arm 36 is supported so as to be swingable up and down around the axis of the rotation shaft 49 with the rotation shaft 49 in the front-rear direction as a fulcrum, and is rotatable with respect to the restriction portion 43 and the sector gear 46. It is supported on the support bracket 41 side.

  Further, in this configuration, the base end portion (near the base end member) of the marker arm 36 that swings downward comes into contact with the distal end portion of the contact member 51, thereby restricting the downward swing of the marker arm 36. .

  In a position closer to the base end of the rotation shaft 49 in the base end member 52, a front-rear direction regulating pin 53 is provided between the pair of front and rear open ends. Further, one end side of the tension spring 42 is engaged with the restriction pin 53, and the other end side of the tension spring 42 is closer to the left and right inner sides of the planting work machine 6 than the restriction pin 53 side in the horizontal frame 22. (See FIG. 6). For this reason, the regulating pin 53 of the base end member 52 is pulled inwardly by the urging force of the tension spring 42, and accordingly, the marker arm 36 is urged downward.

  The marker arm 36 mounted so as to be swingable up and down in this way is always in contact with the restricting portion 43 by the downward biasing by the tension spring 42 (biasing toward the swinging posture side), and together with the restricting portion 43, It swings up and down around the axis of the rotation shaft 49. At this time, since the upward swinging of the marker arm 36 against the elastic force of the tension spring 42 is allowed, the marker moves up and down according to the unevenness of the field scene, and a continuous linear index is displayed on the field scene. Let it form. Further, since the pivot fulcrum between the marker arm 36 and the restricting portion 43 is arranged coaxially, the marker arm 36 and the restricting portion 43 can be arranged in a smaller space.

  At both ends of the sector gear 46 in the movable direction, contact portions 54 and 54 projecting so as to extend the arc-shaped tooth forming portions of the sector gear 46 are integrally formed. Incidentally, when the sector gear 46 is rotated to the position where the marker device 29 is switched to the swinging posture, the one contact portion 54 comes into contact with the lower position detection switch 47B and the lower position detection switch 47B is turned ON. (Detection operation) When the sector gear 46 is rotated to the position where the marker device 29 is switched to the retracted position, the contact portion 54 on the other side contacts the upper position detection switch 47A to detect the upper position. The positions of the two position detection switches 47A and 47B are determined so that the switch 47A is turned ON (detection operation).

  That is, the two position detection switches 47A and 47B function as detection means for causing a control device such as a microcomputer to detect the upper limit and the lower limit of the movable range of the marker. Thus, since the member for detecting and operating the two position detection switches 47A and 47B is integrally formed with the sector gear 46 that rotates the restricting portion 43, it is not necessary to provide another member, and the number of parts can be reduced.

  On the front side of the support bracket 41, a lower limit stopper 56 for defining a lower limit position of the marker arm 36 is integrally formed at a substantially central portion of the support bracket 41, which is below the position through which the swing shaft 49 passes. The lower limit stopper 56 projects in a columnar shape from the front side to the front side of the support bracket 41 and is drilled in the center, and is cut out in an arc shape from the lower side to the left and right outer sides of the projecting portion. The step part 56a formed on the lower side by the arc-shaped notch is formed (see FIGS. 5 to 7).

  Here, the restriction pin 53 provided on the base end member 52 of the marker arm 36 protrudes through the base end member 52 to the front side of the support bracket 41 (see FIGS. 3 and 4). When the protruding portion 53 comes into contact with the step portion 56a of the lower limit stopper 56, the lower limit position of the marker arm 36 that swings up and down is determined.

  With the above-described configuration, the marker arm 36, the base end member 52, the restricting portion 43, the tension spring 42, and the like are disposed on the front surface side of the support bracket 41, and the electrical component 55 and the sector gear are disposed on the rear surface side of the support bracket 41. 46 is arranged, the cover body 48 for preventing muddy water or the like from adhering to the field covers the support bracket 41 and the member arranged on the rear surface side of the support bracket 41 from above in a side view. It is attached (see FIG. 4).

  Specifically, since the electrical component 55 disposed on the rear surface side of the support bracket 41 is attached so as to protrude upward and leftward and rightward from the support bracket 41 in a front view (see FIG. 6), the cover body 48 is formed in a smooth box shape whose lower side is opened so as to cover the electrical component 55 and the sector gear 46, and is formed wider in the left-right direction than the support bracket 41.

  Further, a pair of fixing holes 57 (mounting portions) for bolting the cover body 48 to the support bracket 41 side are provided on the front side of the support bracket 41, and the front side of the cover body 48 is U from the lower side. An insertion hole for fixing the cover body 48 to the fixing hole 57 on the support bracket 41 side in the vicinity of the notch part 58 and in the middle part of the cover body 48, with a letter-shaped notch 58 formed. 59 is drilled (see FIG. 6).

  With this configuration, the electrical components including the electric motor 44, the sector gear 46, the position detection switch 47, and the like disposed on the rear surface side of the support bracket 41 are covered by the cover body 48 on both the left and right side surfaces, the rear side, and the upper side. Since the front side is covered with the cover body 48 and the support bracket 41 and the lower side is covered with the horizontal frame 22 and the support bracket 41, it is possible to more reliably prevent breakdowns caused by adhesion of muddy water or the like on the electrical equipment. be able to.

36 Marker arm 41 Support bracket (support member)
42 Tension spring (biasing member)
43 Regulator 44 Electric motor (electric actuator)
46 Sector gear (rotating member)
47a Upper position detection switch (detection sensor, position detection sensor)
47b Lower position detection switch (detection sensor, position detection sensor)
48 Cover body 56 Lower limit stopper 57 Fixing hole (mounting part)

Claims (4)

  The marker arm (36) of the marker is supported on the support member (41) so as to be able to swing up and down so that the marker that forms the planting reference line for the next process can be lifted from the field scene. ) And a pivoting member (46) that vertically pivots the regulating part (43), and a pivoting member (46) that regulates the downward swing of the marker arm (36). An electric actuator (44) that drives the restricting portion (43) to rotate up and down, and a detection sensor (47) that detects a predetermined vertical rotation position of the rotating member (46), and the marker arm ( The urging member (42) that urges 36) downward to abut against the restricting portion (43) is provided, so that the marker arm (36) is structured to swing up and down together with the restricting portion (43). A work machine with a marker arm (36) and The control part (43) is arranged on the front side of the support member (41), and the electrical component (55) including the electric actuator (44) and the detection sensor (47) and the rotating member (46) are supported by the support member (41). A planting work machine provided with a cover body (48) that is disposed on the rear surface side and covers and protects the rotating member (46) and the electrical component (55).   By attaching the cover body (48) to the attachment portion (57) provided on the front surface of the support member (41), the front and back of the rotating member (46) and the electrical component (55) are connected to the cover body (48) and the support member. The planting work machine according to claim 1 covered by (41).   The rotating member (46) and the electrical component (55) are arranged above the horizontal frame (22) in the left-right direction on which the planting part (27) for performing the planting work is supported, and the horizontal frame (22) The planting work machine according to claim 1 or 2, wherein the lower part of the rotating member (46) and the electrical component (55) is covered.   The planting work machine according to any one of claims 1 to 3, wherein a lower limit stopper (56) for defining a lowermost swing position of the marker arm (36) is integrally formed on the front side of the support member (41).

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