JP2014000017A - Sulky rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problems that, when a linkage route for disconnecting/connecting a clutch in response to lifting of a leveling device is constituted of two linkage paths of a linkage path caused by the lift of a planting machine and a linkage path caused by a lifting/lowering device, the linkage mechanism becomes complex and a manufacturing cost increases.SOLUTION: An electric actuator controls lifting/lowering of a leveling device 11. When the leveling device 11 is lifted to reach a storage position, a clutch 22 is disconnected via a wire 57. When a planting machine 10 is lifted with respect to a traveling machine body 5, the leveling device 11 is lifted to the storage position by the electric actuator and the clutch 22 is disconnected via the wire 57.

Description

  The present invention relates to a riding rice transplanter including a leveling device for leveling a farm scene, and more particularly, to a riding rice transplanter including a linkage mechanism that links connection / disconnection of a clutch that transmits power to the leveling device and lifting / lowering of the leveling device. .

  In general, a planting work machine for planting seedlings in a farm field is provided on the rear side of the body of the riding rice transplanter through a lifting mechanism. In addition, a leveling rotor, which is a leveling device for leveling the farm scene, is provided in front of the planting machine and between the machine body, and the leveling rotor performs leveling work. It is provided so that it can be raised and lowered so that it can be raised and stored when it is not.

  Conventionally, in a riding rice transplanter equipped with a leveling rotor, a leveling clutch for connecting and disconnecting power transmission to the leveling rotor and a lifting mechanism for raising and lowering the planting work machine are connected via a link mechanism, and the leveling clutch and leveling are connected. As the planting machine rises, the clutch is disengaged by the link mechanism, and the leveling rotor rises by the lifting operation tool. A riding rice transplanter that stops a leveling rotor by cutting a clutch with a connecting wire has been proposed (see, for example, Patent Document 1).

JP 2009-39028 A

  However, in the riding rice transplanter described in Patent Document 1, the connection and disconnection of the power transmission to the leveling rotor are linked by two separate systems for raising and lowering the leveling rotor by raising and lowering the planting work machine and operating the lifting operation tool. I am letting. In other words, the ground leveling rotor is powered by two link paths: a link path due to the ascent of the planting machine via the link mechanism and a link path due to the lifting and lowering of the leveling rotor by the lifting operation tool via the link wire. It is designed to be connected and disconnected. For this reason, not only the linkage mechanism for connecting / disconnecting the power of the leveling rotor becomes complicated, but also the manufacturing cost increases.

  Therefore, an object of the present invention is to provide a riding rice transplanter that solves the above-described problems by providing a clutch linkage mechanism that disengages a clutch as the leveling device is lifted by an electric actuator.

The present invention relates to a traveling machine body (5) supported by traveling wheels (2, 3), and a planting work machine connected to the rear of the traveling machine body (5) through a lifting mechanism (9) so as to be lifted and lowered. (10) and a leveling device that is supported by the planting machine (10) so as to be movable up and down, and that leveles the field scene while rotating between the planting machine (10) and the traveling machine body (5). In the riding rice transplanter (1), comprising:
A clutch (22) for connecting and disconnecting the rotation transmitted to the leveling device;
An electric actuator (63) disposed on the planting machine (10) and driving the leveling device (11) up and down;
A clutch linkage mechanism (64) linked by the electric actuator (63) so as to disconnect the clutch (22) at the retracted position where the leveling device (11) is raised;
In conjunction with the planting work machine (10) being lifted by the lifting mechanism (9), the electric actuator (63) is controlled so that the leveling device (11) is in the retracted position, and the clutch And a control unit (75) for cutting (22).

For example, referring to FIGS. 3 to 10, the leveling device (11) is supported by the planting machine (10) via a link mechanism (53) so as to be movable up and down, and the link mechanism (53) The leveling device (11) is moved up and down by rotating the rotating horizontal shaft (52) by the electric actuator (63),
The clutch (22) is disposed on the traveling body (5),
The clutch linkage mechanism (64) includes a linkage wire (57) having an inner wire (57a) and an outer wire (57b), and one of the inner wire (57a) and the outer wire (57b) The arm (59) integrated with the moving horizontal shaft (52) is connected to the operation portion (25) of the clutch, and either the inner wire (57a) or the outer wire (57b) is connected to the arm (59). And a fixed receiving portion (58) integrally provided on the traveling body (5) of the operation portion (25) of the clutch. ) Between.

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, it does not have any influence on description of a claim by this.

  According to the first aspect of the present invention, the leveling device is controlled to move up and down between the work position and the storage position with respect to the planting machine by the electric actuator, and the operator can perform leveling work even in the planting work. When unnecessary, for example, when the leveling device is raised to the retracted position by operating the operation tool in the driver's seat, the clutch is disconnected through the clutch linkage mechanism. In addition, when the planting work machine is lifted by the lifting mechanism due to the traveling machine body reaching the end of the field in the planting work, the electric actuator raises the leveling device to the retracted position by the signal from the control unit, The clutch is disconnected through the linkage mechanism. Thereby, it is not necessary to provide a connection mechanism for connecting and disconnecting the clutch in conjunction with the ascent of the planting work machine, and only one connection path for connecting the lifting and lowering of the leveling device and the connection and disconnection of the clutch is required. This structure can be simplified and the manufacturing cost can be reduced.

  According to the invention which concerns on Claim 2, the clutch which connects / disconnects rotation of a leveling apparatus is arrange | positioned in a traveling machine body, the leveling apparatus is arrange | positioned freely at a planting work machine, and a planting work machine raises / lowers with respect to a traveling machine body In this case, the rotation horizontal axis of the link mechanism that moves up and down the leveling device and the operation part of the clutch change relatively, but the rotation horizontal axis and the operation part of the clutch are connected to the inner wire and the outer wire. Even when the planting machine is in the raised position and the lowered (working) position, the clutch can be connected and disconnected by raising and lowering the leveling device without being affected by the relative change due to the raising and lowering of the planting machine. it can.

The side view which shows the passenger rice transplanter which concerns on this Embodiment. The top view which shows the steering handle periphery of a riding rice transplanter. The perspective view which shows the planting work machine connected with the raising / lowering mechanism and its raising / lowering mechanism. The perspective view which shows a planting work machine and a leveling rotor. The rear view which shows the structure in the motor unit provided in the raising / lowering operation shaft. The perspective view which looked at the structure in a motor unit from right-and-left one. The perspective view which looked at the structure in a motor unit from right and left other side. The side view which shows a planting work machine and a leveling rotor, Comprising: The leveling rotor is falling to the operation position. The side view which shows a planting work machine and a leveling rotor, Comprising: The leveling rotor is raising to the storing position. The control block diagram of the control part of a riding rice transplanter.

  Hereinafter, a riding rice transplanter which is a transplanter according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the riding rice transplanter 1 has a traveling machine body 5 supported by a pair of front wheels 2 and rear wheels 3 which are traveling wheels. An engine (not shown) is disposed in front of the traveling machine body 5 and covered with a bonnet 6. A driving operation unit 7 for driving the riding rice transplanter 1 is provided behind the bonnet 6. Yes. A planting work machine 10 is connected to the rear of the driving operation unit 7 via an elevating mechanism 9, and the farm scene is leveled between the traveling machine body 5 and the planting work machine 10. A leveling device 11 is disposed.

  The driving operation unit 7 is provided with a steering handle 12 for steering the riding rice transplanter 1, and below the steering handle 12, a display panel 13 for displaying various instruments as shown in FIG. Is provided. On both sides of the display panel 13, various operation levers such as a main transmission lever 14 and a sub transmission lever 15 that change the traveling speed of the riding rice transplanter 1 are arranged.

  An operation dial 17 for operating the leveling device 11 is provided below the display panel 13, and a driver seat 18 on which a driver is seated is provided behind the steering handle 12. (See FIG. 1).

  As shown in FIG. 3, the elevating mechanism 9 includes left and right upper links 9 a and left and right lower links 9 b that connect the planting work machine 10 to the rear part of the traveling machine body 5. The rear ends of the upper link 9a and the lower link 9b are connected to the planting work machine 10 via the link bracket 19, and the front ends of the upper link 9a and the lower link 9b are provided at the rear part of the traveling machine body 5. The fulcrum shafts 20 and 21 are rotatably supported.

  Further, an outer bracket 58 that is a fixed receiving portion for fixing an outer wire 57 b of a connecting wire 57 described later is provided in the vicinity of the fulcrum shafts 20 and 21, and the traveling device 4 is provided below the outer bracket 58. A leveling clutch lever 25, which is an operation unit for operating the leveling clutch 22 provided inside, is rotatably provided. Further, a hydraulic cylinder 29 is disposed between the upper link 9a and the lower link 9b, and the planting work machine 10 is moved up and down in conjunction with the expansion and contraction of the hydraulic cylinder 29. .

  The planting work machine 10 has a seedling mounting table 30 on which a seedling mat is mounted, and a planting device 31 for planting the seedling mounted on the seedling mounting table 30 in a farm scene (see FIGS. 8 and 9). ). The seedling stage 30 is arranged in the left-right direction orthogonal to the traveling direction of the traveling machine body 5 and is supported by a planting frame 32 connected to the rear ends of the upper link 9a and the lower link 9b via the link bracket 19. At the same time, both end portions of the seedling mounting base 30 are fixed to the planting frame 32 and supported by a left seedling mounting base stay 33 and a right seedling mounting base stay 35 that extend upward from the planting frame 32. Yes. Further, in the middle of the left seedling support base stay 33 and the right seedling support base stay 35 and below the link bracket 19 integrated with the planting frame 32, it extends in the front-rear direction, which is the traveling direction of the traveling machine body 5. A rolling support shaft 36 is provided (see FIG. 4).

  The planting device 31 includes a plurality of planter cases 37 extending rearward from the planting frame 32, and a rotary case 39 provided rotatably at a pair of left and right at the tip of the planter case 37. The planter arm 41 with the planting claws 40 attached thereto is rotatably provided at both ends of the rotary case 39 (see FIGS. 8 and 9). . Furthermore, below the planter case 37, there are provided a plurality of floats 42 for adjusting the planting depth of the seedling while sliding on the surface of the planter 37. The float 42 is connected to a float shaft 45 via a link 43. And is swingably provided in the vertical direction.

  In front of the float 42 (between the traveling machine body 5 and the planting work machine 10), a leveling device 11 for leveling the field scene is provided. As shown in FIG. 4, the leveling device 11 has a leveling rotor 46 provided with a plurality of blade portions 46a, and the leveling rotor 46 is arranged in the left-right direction. The rotating shaft 47 is integrally supported and arranged in the left-right direction.

  The rotary shaft 47 is connected to a drive case 48 disposed substantially at the center of the arranged leveling rotors 46, and is rotated by the power from the shaft 51 transmitted through the drive case 48 ( Each leveling rotor 46 is provided so as to rotate with the rotation of the rotation shaft 47. In addition, a mudguard 44 is provided above each leveling rotor 46 to prevent the mud from being scraped up by the leveling rotor.

  The rotary shaft 47 is supported by left and right rotor stays 50 and 51, which are standing support members, via bearing portions 49 and 49. The rotor stays 50, 51 are connected to an elevating operation shaft (rotating horizontal axis) 52 laid between the left seedling support platform stay 33 and the right seedling support platform stay 35 from the elevating operation shaft 52 to the traveling machine body 5 side. Are connected to each other via link plates 55, 55 that project toward the direction of the head and link plates 56, 56 that connect the rotor stays 50, 51 to the left and right seedling support stays 33, 35.

  As shown in FIGS. 4 and 5, the lifting operation shaft 52 is provided between the left and right seedling support stays 33, 35 and is rotatably supported by each stay, and is provided on the planting frame 32. The shaft support portion 38 is rotatably supported. The elevating operation shaft 52 is configured to be split into different lengths (elevating operation shafts 52a and 52b) with the joint portion 54 supported by the shaft support portion 38 as a boundary. The elevating operation shaft 52 is not limited to a split axis, and may be a single axis.

  4 to 6, the leveling rotor 46 as the leveling device 11 is planted by the left and right rotor stays 50 and 51, the lifting operation shaft 52, the link arms 55 and 55, and the link plates 56 and 56. The left and right link mechanisms 53 are connected to the work machine 10 so as to be movable up and down, and the lifting operation shaft 52 is rotatably supported over a pair of left and right stays 33 and 35. It becomes a rotating shaft that rotates.

  Further, as shown in FIG. 6, the link arm 55 provided in the vicinity of the left seedling support base stay 33 is connected to an inner wire 57 a of a connecting wire 57 that is connected to the leveling clutch lever 25. An arm 59 is provided. An outer arm 60 that is a fixed receiving portion for fixing the outer wire 57 b of the connecting wire 57 is provided in the vicinity of the inner arm 59 and on the left seedling support stand 33.

  As shown in FIG. 6, the outer arm 60 is bent at a substantially right end and is formed in an L shape in plan view, and the end on one side of the connecting wire 57 is connected to the outer arm 60 and the outer arm 60. It is fixed to the inner arm 59 and connected to the stay 33 of the planting work machine 10. The other end of the connecting wire 57 has an outer wire 57b fixed to an outer bracket 58, which is a fixed receiving portion provided on the traveling machine body 5 (see FIG. 3). The inner wire 57a is connected. The inner arm 59, the outer arm 60, the outer bracket 58, the leveling clutch lever 25, and the connecting wire 57 constitute the clutch connecting mechanism 64 of the riding rice transplanter 1.

  Further, with respect to the lifting mechanism 9, on the side of the right seedling support base stay 35 that supports the lifting operation shaft 52, a scraping amount adjustment that adjusts the amount of seedling that the planting claw of the planter arm scrapes from the seedling mounting base 30. Depth adjustment levers 72 for adjusting the planting depth of the seedlings by the lever 71 and the planter arm 41 are provided (see FIG. 3).

  Further, in the vicinity of the left seedling support stand 33 on the opposite side of the scraping amount adjustment lever 71 and the depth adjustment lever 72, a motor unit for rotating the leveling rotor 46 by rotating the lifting operation shaft 52. (Electric actuator unit) 61 is provided, and the motor unit 61 is disposed on the lifting operation shaft 52 and between the left seedling support stand 33 and the shaft support portion 38. That is, the motor unit 61 is disposed on the lifting / lowering operation shaft 52a having a shorter length when the lifting / lowering operation shaft 52 is divided into two.

  As shown in FIGS. 6 and 7, a base plate (base member) 62 is provided in the cover of the motor unit 61 so as to be loosely fitted to the lifting operation shaft 52. A motor 63 as an electric actuator is attached to the base plate 62, and an output shaft 63a of the motor 63 is integrally attached to the elevating operation shaft 52, and a sector gear (rotating member) 65 formed in a fan shape. Meshed. The base plate 62, the sector gear 65, and the like constitute a transmission device 67 that transmits the rotation of the motor 63 to the lifting operation shaft 52.

  The base plate 62 is provided with a leveling device height detection potentiometer 66 for detecting the height position of the leveling rotor 46 by detecting the rotational position of the sector gear 65. The sector gear 65 is shown in FIG. Thus, the pin member 65 a is provided so as to penetrate the sector gear 65. The pin member 65 a is movably fitted in an arc-shaped long hole 62 a formed in the base plate 62.

  Further, between the base plate 62 and the leveling device height detection potentiometer 66, the lifting operation shaft 52 is provided with an arm 69 extending downward as shown in FIG. A rod (link member) 70 is connected to the lower end of the arm 69 to transmit the rotation (planting depth adjustment) of the float shaft 45 to the base plate 62, and the float 42 swings in the vertical direction. The base plate 62 is rotated in conjunction with the rotation of the float shaft 45 associated therewith. That is, the base plate 62 rotates in conjunction with the swing of the float 42 accompanying the change in planting depth, and the height of the leveling rotor 46 also varies with the rotation of the base plate 62.

  The riding rice transplanter 1 has a control unit 75 as shown in FIG. The control unit 75 is constituted by a microcomputer, and on its input side, an operation dial 17 for operating the height position of the leveling rotor 46, and a planting operation for detecting the height of the planting work machine 10 A machine height detection potentiometer 76 and a leveling device height detection potentiometer 66 are connected, and a motor 63 is connected to the output side thereof. A signal is output to the motor 63 based on input signals from the planting work machine height detection potentiometer 76, the leveling device height detection potentiometer 66, and the like.

  Next, the operation of the leveling device (leveling rotor 46) 11 of the riding rice transplanter configured as described above will be described. When an operator (driver) performs a lifting operation on the planting work machine 10, the planting work machine 10 is lifted along with the lifting operation.

  When the planting work machine height detection potentiometer 76 detects that the planting work machine 10 has risen above a predetermined height, the motor 63 is driven by an output signal from the control unit 75. As the motor 63 is driven, the sector gear 65 rotates upward. At this time, as the sector gear 65 rotates, the pin member 65a provided in the sector gear 65 moves in the long hole 62a of the base plate 62, and the movement of the pin member 65a is detected by the leveling device height detection potentiometer 66. The height position of the leveling rotor 46 is detected.

  Along with the rotation of the sector gear 65, the lifting operation shaft 52 is rotated, the link arms 55, 55 and the link plates 56, 56 are rotated, and the left and right rotor stays 50, 51 are lifted. As shown in FIG. 9, it is stored by moving up to the storage position.

  Further, when the leveling work by the leveling rotor 46 is not required, the inner arm 59 is also rotated backward as the lifting operation shaft 52 is rotated. As the inner arm 59 rotates, the inner wire 57 a of the connecting wire 57 supported by the outer arm 60 is pulled by the inner arm 59. Then, in conjunction with the inner wire 57a being pulled by the outer arm 60, the leveling clutch lever 25 rotates upward, and the leveling clutch 22 is disconnected.

  When the leveling clutch 22 is disconnected, the power transmission to the shaft 28 is disconnected, and the power transmission to the rotating shaft 47 is also disconnected. That is, the leveling rotor 46 is stored in the storage position in a stopped state when the leveling clutch is disengaged as it rises.

  In the state where the planting work machine 10 is lowered and the planting work is performed, the leveling device 11 is raised by the operation of the operation dial 17 by the operator. In this state, the control unit 75 transmits an ascending signal to the motor 63 based on the stored signal from the operation dial 17 to drive the motor 63, and the leveling rotor 46 ascends as the elevating operation shaft 52 rotates. As the leveling rotor 46 rises, the leveling clutch 22 is disconnected via the connecting wire 57, and the leveling rotor 46 is stored in the retracted position in a stopped state.

  As described above, the lifting operation shaft 52 and the leveling clutch lever 25 are connected by the connecting wire 57, and the leveling clutch is disconnected by connecting to the rotation of the lifting operation shaft 52. When the leveling rotor 46 is raised to the storage position by rotating the lifting operation shaft 52, the leveling rotor 46 can be stored in a stopped state. As a result, the leveling rotor 46 can be reliably stopped during storage without using the leveling rotor 46.

  In addition, as the planting work machine 10 is moved up and down, the riding rice transplanter 1 that moves the leveling rotor 46 up and down to the retracted position by the motor unit 61 is provided with a clutch linkage mechanism that causes the leveling clutch to be disconnected in conjunction with the ascent of the leveling device 11. Therefore, it is not necessary to provide a connecting mechanism for connecting / disconnecting power to the leveling device 11 in conjunction with the ascent of the planting work machine 10, and the connecting path for connecting / disconnecting the leveling clutch 22 is connected to the lifting / lowering of the leveling rotor 46 1. It can be made up of two connected routes. Thereby, the structure of a connection mechanism can be simplified and the manufacturing cost of the riding rice transplanter 1 can be suppressed.

  Further, since the lifting operation shaft 52 and the leveling clutch lever 25 are connected by the inner wire 57a and the outer wire 57b, when the planting work machine 10 is lifted and lowered with respect to the traveling machine body 5, the lifting operation shaft 52 and the leveling operation are performed. Even if the position with respect to the clutch lever 25 changes relatively, the leveling rotor is not affected by the raising and lowering of the planting work machine 10 and the planting work machine 10 is in the raised position and the lowered (working) position. The clutch can be connected and disconnected by raising and lowering 46.

  Further, the inner arm 59 provided on the link arm 55 projecting from the lifting operation shaft 52 and the leveling clutch lever 25 are connected by the inner wire 57a, and the outer wire 57b is connected to the outer bracket 58 provided on the traveling machine body 5. Since it is arranged on the outer arm 60 provided integrally with the left seedling support stand 33 and the lifting / lowering of the leveling rotor 46 and the connection / disconnection of the leveling clutch 22 are connected by the connecting wire 57, the clutch connecting mechanism 64 The structure can be simplified and the manufacturing cost can be reduced. Moreover, since it provided integrally with the left seedling support stand 33 of the outer arm 60, the clutch connection mechanism 64 can be comprised compactly.

  Further, the outer wire 57b of the connecting wire 57 is fixed to the outer arm 60, the inner wire 57a is connected to the inner arm, and the inner wire 57a is pulled in accordance with the rearward rotation of the lifting operation shaft 52, whereby the leveling clutch Since the cutting operation is performed, the connecting wire 57 can be routed in a direction in which muddy water or the like does not enter. Thereby, it can prevent that the connecting wire 57 rusts, and can improve the durability of the connecting wire 57.

  Further, the outer arm 60 to which the outer wire 57b of the connecting wire 57 connected to the leveling clutch lever 25 is fixed is provided with the clutch connecting mechanism 64 by using the seedling stand stay 33 as the left seedling stand stay 33 is provided. Since it comprised, the clutch connection mechanism 64 can be comprised compactly.

  In the present embodiment, the inner wire 57a of the connecting wire 57 is connected to the leveling clutch lever 25 and the inner arm 59, and the connection / disconnection of the leveling clutch 22 and the elevation of the leveling rotor 46 are connected to each other. Not limited to this, any connection may be used as long as the leveling clutch 22 can be connected to and disconnected from the leveling rotor 46. For example, the outer wire 57b of the connecting wire 57 may be connected to the leveling clutch lever 25 and the inner arm 59 to link the connection / disconnection of the leveling clutch 22 and the lifting / lowering of the leveling rotor 46.

DESCRIPTION OF SYMBOLS 1 Passenger rice transplanter 2, 3 Traveling wheel 5 Traveling machine body 9 Lifting mechanism 10 Planting work machine 11 Leveling device 22 Clutch (leveling clutch)
25 Operation part (leveling clutch lever)
52 Rotating horizontal axis (lifting operation axis)
53 Link Mechanism 57 Connecting Wire 57a Inner Wire 57b Outer Wire 59 Arm (Inner Arm)
58 Fixed receiving part (outer bracket)
60 Fixed receiving part (outer arm)
63 Electric actuator (motor)
64 Clutch linkage mechanism 75 Control unit

Claims (2)

A traveling machine body supported by a traveling wheel, a planting work machine connected to a rear side of the traveling machine body through an elevating mechanism, and a planting work machine supported by the planting work machine so as to be raised and lowered. In a riding rice transplanter, comprising a leveling device for leveling a farm scene while rotating between a machine and the traveling machine body,
A clutch for connecting and disconnecting the rotation transmitted to the leveling device;
An electric actuator disposed on the planting work machine and driving the leveling device up and down;
A clutch linkage mechanism linked by the electric actuator to disconnect the clutch at the retracted position where the leveling device is raised;
In conjunction with the planting work machine ascending by the elevating mechanism, the electric actuator is controlled so that the leveling device is in the retracted position, and the controller is configured to disengage the clutch.
A riding rice transplanter characterized by that. The leveling device is supported by the planting machine so as to be able to move up and down via a link mechanism, and the leveling device is moved up and down by rotating the rotating horizontal axis of the link mechanism with the electric actuator,
The clutch is disposed on the traveling aircraft body,
The clutch linkage mechanism is composed of a linkage wire having an inner wire and an outer wire, and either one of the inner wire and the outer wire links the arm that is integral with the rotating horizontal axis and the operation portion of the clutch, One of the inner wire and the outer wire is fixed to a fixed receiving portion provided integrally with the planting work machine in the vicinity of the arm and a fixed receiving portion provided integrally to the traveling machine body of the operation portion of the clutch. Arranged between
The riding rice transplanter according to claim 1.

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