JP4442573B2 - Ride type rice transplanter - Google Patents

Description

  The present invention relates to a riding type rice transplanter.

Conventionally, there is a riding type rice transplanter that can stop traveling while leaving the aircraft.
JP 2000-135007 A

  Therefore, when installing a stop lever that can perform a travel stop operation in a state of getting off the aircraft in a riding type rice transplanter, to provide a suitable installation position of the stop lever and an effective configuration of other members related to the stop lever. It is an object of the present invention.

According to the first aspect of the present invention, the steering handle (52) is provided on the upper side of the hood (50a) in front of the seat (51), and the traveling stop operation is performed in a state where the aircraft is lowered to the side of the hood (50a). Stop levers (54) that can be operated, and reserve seedling frames (5) provided on the left and right sides of the front part of the aircraft are housed in a use state in which the front end projects beyond the front end of the aircraft and behind the front end of the aircraft A holder (88 ') that holds the grip (57a) of the recoil rope (57) is provided on the side surface of the bonnet part (50a) so that the recoil rope (57) can be mounted on the vehicle. to be able to pull it from a position off from the vehicle body front side of the vehicle body, the holder (88 ') upper constitute a cup shape that is wide open in the longitudinal direction, the spare seedling frame (5) the base portion (111) The base (1 1) and a holding part (112) provided before and after, and the holding part (112) is rotatably attached to the base part (111), and in a state where the stop lever (54) is operated to the traveling position, When the holding portion (112) is rotated with respect to the base portion (111) via the seedling frame operating wire (119), the holding portion (112) is lifted horizontally, and the stop lever (54) In a state in which the holding portion (112) is suspended by rotating the holding portion (112) with respect to the base portion (111) via the seedling frame operating wire (119), It is set as the riding type rice transplanter characterized by having become the structure which becomes .

  Therefore, at the time of rice transplanting work, the preliminary seedling frames 5 provided on the left and right sides of the front part of the machine body are used in a state where the front end portion protrudes from the front end of the machine body, and the seedling work is carried out by placing the spare seedlings on the spare seedling frame 5 . When the stop lever 54 on the left side of the steering handle 52 is operated from the front end of the airframe while being lowered from the airframe, the storage state in which the front seedling frame 5 is stored behind the front end of the airframe. If it is changed to, the stop lever 54 can be easily operated from the front end of the airframe, which is safe. Further, in the stored state in which the preliminary seedling frame 5 is stored, the preliminary seedling frame 5 does not protrude forward from the front end of the machine body, so that no space is taken up when the machine body is stored. Further, the recoil rope 57 can be pulled from the position on the vehicle or from the position where the recoil rope 57 is dismounted from the vehicle body on the vehicle front side.

Further , when the stop lever 54 is operated to the stop position, the holding portion 112 is in a retracted state via the seedling frame operating wire 119, so that the operation of the stop lever 54 can be further facilitated.

  The riding-type rice transplanter according to the present invention has a spare seedling frame 5 provided on both the left and right sides of the front part of the machine body in a state of use in which the front end protrudes beyond the front end of the machine body. Can plant rice seedlings. When the stop lever 54 on the left side of the steering handle 52 is operated from the front end of the airframe while being lowered from the airframe, the storage state in which the front seedling frame 5 is stored behind the front end of the airframe. If it is changed to, the stop lever 54 can be easily operated from the front end of the airframe, which is safe. Further, in the stored state in which the preliminary seedling frame 5 is stored, the preliminary seedling frame 5 does not protrude forward from the front end of the machine body, so that no space is taken up when the machine body is stored. Furthermore, since a holder 88 ′ for holding the grip 57a of the recoil rope 57 is provided on the side surface of the bonnet portion 50a, and the holder 88 ′ is configured in a cup shape with the upper portion wide open in the front-rear direction, the recoil rope 57 is mounted on the vehicle. It can be pulled even from the position where it got off from the body in front of the body.

In addition , in the state where the stop lever 54 is operated to the stop position, the holding portion 112 is in the retracted state via the seedling frame operating wire 119, so that the operation of the stop lever 54 can be further facilitated.

  1 to 12 show a riding type rice transplanter as an example of a riding type farm working machine to which the present invention is applied. In this riding type rice transplanter 1, a seedling planting portion 4 as a working device is mounted on the rear side of the traveling vehicle body 2 via a lifting link device 3 so as to be movable up and down. Further, at the left and right end portions of the front portion of the traveling vehicle body 2 are provided with preliminary seedling frames 5,.

  The traveling vehicle body 2 is a four-wheel drive vehicle, and includes a pair of left and right front wheels 7 and 7 and rear wheels 8 and 8 which are drive wheels. A mission case 10 is disposed at the front of the aircraft, and front wheel axle cases 11, 11 extend laterally from the left and right side surfaces of the mission case, and a front wheel final case 12, which can be turned at the tip thereof, 12, front wheels 7 and 7 are rotatably supported. A rear wheel final case 15 is fixed to the front end portion of the rear frame 14 which is fixed to the front end portion of the main frame 13 on the rear portion of the transmission case 10 and extends laterally from the rear end portion of the main frame 13. , 15 are rotatably supported on the rear wheels 8,8.

  A U-shaped frame 17 is provided upward from the front portion of the main frame 13, and the left and right center portions of the front left and right frames 18 in the left and right direction are connected to the upper end portion thereof. Front front and rear frames 19 and 19 and side frames 20 and 20 are respectively provided forward from the front left and right frames 18, and a bumper frame 21 is connected to the front end of each of the frames 19, 19, 20 and 20. Yes. Support pipes 22, 22 for fixing and supporting seedling frame support frames 110, 110 described later are attached to the left and right ends of the bumper frame 21. The front front and rear frames 19 and 19 are supported from below by upper and lower frames 23 and 23 having lower ends fixed to the left and right front wheel axle cases 11 and 11, respectively.

  The rear frame 14 is provided with a pair of left and right link support frames 25, 25 that support upper links 90, 90 and lower links 91, 91, which will be described later. And the upper end parts of both link support frames 25 and 25 are connected via the back left-right frame 26 of the left-right direction which has the length for the left-right width of an airframe. The rear left and right frames 26 are connected to the rear end portions of the rear front and rear frames 27, 27, and the front end portions of the rear front and rear frames are connected to the front left and right frames 18.

  The frames 18, 19, 19, 20, 26, 27, and 27 at the upper part of the machine body are frames that support a body 50 described later, and are arranged at appropriate positions according to the shape of the body. A frame-like shape in which the frame supporting these bodies, the transmission case 10, the front wheel axle cases 11, 11 and the frames 13, 14 constituting the chassis are connected and integrated by frames 17, 23, 23, 25, 25 in the vertical direction. With this structure, weight reduction is achieved while ensuring necessary rigidity. Further, using the left-right frame 26 for reinforcing the link support frames 25, 25 as a part of the frame for supporting the body is an effective measure for reducing the number of parts and reducing the weight. ing.

  The engine 30 is mounted on an engine base 31 installed in the front and rear center of the main frame 13. A pulley 33 having two belt hooks is attached to the engine output shaft 32 protruding from the left side surface portion of the engine 30, and the mission input shaft protruding from the outer belt hook portion of the pulley and the left side surface portion of the mission case 10. A travel transmission belt 36 is hung on a pulley 35 attached to 34, and an inner belt hook portion of the pulley 33 and a pulley 39 attached to a drive shaft 38 of a hydraulic pump 37 provided at a position above the rear portion of the transmission case 10. A pump transmission belt 40 is hung. The travel transmission belt 36 and the pump transmission belt 40 are arranged in parallel, and the travel tension pulley 41 is in the rear position and the pump tension pulley 42 is in the front position so that the tension pulleys 41 and 42 of both belts do not overlap each other in side view. Is provided.

  The rotational power input to the mission case 10 is separated into traveling power and seedling planting power through the main transmission. A part of the traveling power is transmitted to the front wheel final cases 12 and 12 via the front wheel axles in the front wheel axle cases 11 and 11 to rotationally drive the front wheels 7 and 7. Front wheel brakes are provided in the front wheel final cases 12 and 12. The remaining traveling power is transmitted to a rear wheel transmission case 45 that is fixed to the rear frame 14 via a rear wheel transmission shaft 44, and the left and right rear wheel axles 46, 46 are further transmitted from the rear wheel transmission case. To the rear wheel final cases 15 and 15 to rotate the rear wheels 8 and 8. In the rear wheel transmission case 45, there is provided a side clutch brake that can turn off the transmission of the left and right rear wheels individually and apply the brake.

  Further, the seedling planting part power is transmitted to the seedling planting part 4 by the first planting transmission shaft 47 and the second planting transmission shaft 48. The first planting transmission shaft 47 and the second planting transmission shaft 48, and the second planting transmission shaft 48 and the input shaft of the seedling planting portion are connected via a universal joint, and the second planting transmission shaft The shaft 48 is configured to be extendable and contractable so as to cope with the raising and lowering of the seedling planting part 4.

  The body 50 includes a steering shaft 52a projecting upward from the mission case 10 and a bonnet portion 50a that covers various operation mechanisms, an engine cover portion 50b that covers the upper portion of the engine 30, and front and upper portions of the rear wheels 8 and 8. Is composed of a fender portion 50c that covers this portion, a horizontal floor portion 50d on which the person can walk on the upper side, and elevating step portions 50e, 50e formed on the left and right side portions of the floor portion. The body 50 may be divided into a plurality of parts so that each can be attached and detached individually.

  A seat 51 is installed on the engine cover portion 50 b of the body 50. A steering handle 52 for steering the front wheels 7 and 7 is provided in front of the seat 51 and above the hood 50a. Further, a main transmission lever 53 for operating the main transmission and a stop lever 54 for stopping the traveling are provided on the left side of the bonnet portion 50a. A planting elevating lever 55 for elevating the attachment portion and an engine starting recoil rope 57 are provided. Further, a clutch pedal 58 as a stop operating tool that functions in the same manner as the stop lever 54 and left and right brake pedals 59L and 59R for operating the side clutch brake are provided on the left and right foot portions of the bonnet portion 50a. .

  The main transmission lever 53 is rotatably attached to the left and right lever shaft 60 and is operated to rotate back and forth. “Road running speed”, “working speed”, “neutral” and “back” operation positions are set.

  The stop lever 54 is also rotatably attached to the lever shaft 60, and is operated to rotate back and forth. Further, the stop lever 54 is formed of a leaf spring material having a thin thickness in the left-right direction, and can be bent to some extent in the left-right direction. The stop lever 54 is rotated back and forth to switch between “running” and “stop”. The lever guide 61 has the shape shown in FIG. It is locked so that it does not move to “running” by being caught by the part 61a. In order to operate the stop lever 54 from “stop” to “travel”, the lever 54 is moved outward by using the flexure and is moved forward after overcoming the convex portion 61a. The stop lever 54 is provided so that the distance from the front end of the fuselage is substantially the same as the steering handle 52, and a person who gets off the fuselage can easily operate the steering handle 52 and the stop lever 54 from the front of the fuselage. Can be done.

  FIG. 7 shows the operating mechanism of the stop lever. One end of a connecting rod 64 is connected to a lever arm 63 that rotates integrally with the stop lever 54, and a rotatable clutch arm 65 is provided in a long hole 64a that is opened in the other end of the connecting rod. The connecting pin 66 is loosely fitted. The clutch arm 65 is connected to an arm 68 that supports the tension pulley 41 of the traveling transmission belt 36 via a clutch operating rod 67. The tension pulley arm 68 is urged by a tension spring 69 in a direction in which the tension pulley 41 applies tension to the traveling transmission belt 36. A brake arm 72 is fixedly supported on a clutch arm shaft 71 that fixes and supports the clutch arm 65, and the brake arm is connected to a brake operating arm 74 of a front wheel brake via a brake rod 73. A play by the compression spring 75 is provided between the brake rod 73 and the brake operation arm 74.

  When the stop lever 54 is operated to “travel”, the tension pulley 41 is pressed against the travel transmission belt 36 by the tension of the tension spring 69, the engine power is transmitted to the transmission case 10, and the front wheel brake is It does not work. When the stop lever 54 is operated to “stop”, the tension pulley 41 is pulled up to cut off the transmission of engine power, and then the front wheel brake is actuated after a time of play by the compression spring 75 has elapsed. In this way, by cutting off the transmission and braking the driving wheel, it is possible to reliably stop traveling even on an inclined ground.

  As shown in FIG. 8, a clutch pedal shaft 77 is provided coaxially with the clutch arm shaft 71, and a clutch pedal 58 is attached thereto. Engaging portions 71 a and 77 a are formed at opposite ends of the clutch arm shaft 71 and the clutch pedal shaft 77, respectively. Although the two engaging portions 71a and 77a are shown separated in the drawing, in actuality, the engaging portion 71a is in a traveling state in which the stop lever 54 is operated to "travel" and the clutch pedal 58 is not depressed. The surface 71b and the surface 77b of the engaging portion 77a abut or are close to each other. Even if the stop lever 54 is operated to “stop” from that state, the clutch arm shaft 71 only rotates in the X direction, the clutch pedal shaft 77 does not rotate, and the clutch pedal 58 does not move. For this reason, the stop lever 54 can be operated with a small force. When the clutch pedal 58 is depressurized from the traveling state, the clutch arm shaft 71 is also rotated by the clutch pedal shaft 77, the transmission of engine power is cut off and the front wheel brake is activated. At this time, since the rotation of the clutch arm 65 is absorbed by the long hole 64a, the stop lever 54 does not move.

  The planting lifting / lowering lever 55 is rotatably attached to a lever shaft 60 and a support plate 80 attached to the lever shaft 60, and is attached to a front and rear fulcrum shaft 81 provided on the support plate 80. As shown in FIG. 9, the lever guide 82 of the planting elevating lever includes a planting elevating operation area in the front-rear direction having operation positions of “up”, “neutral”, “descent”, and “planting”, and It has a T-shape consisting of a marker operation area in the left-right direction connected to “planting” in the lifting operation area.

  The fulcrum shaft 81 is integrally attached with a marker actuating rod 83 that projects laterally. In the vicinity of the tip of the marker operating rod 83, left and right marker operating plates 85L and 85R are provided. As shown in FIG. 10, the left and right marker actuating plates 85L and 85R are both pivotally attached to a left and right shaft 86, and one end thereof is a marker wire for raising the corresponding post-drawing markers 105 and 105 upright. The ends of 87L and 87R are connected, and the other end is bent so that the marker operating rod 83 is engaged.

  When the planting lifting / lowering lever 55 is operated to the right by “planting”, the marker operating rod 83 rotates upward, and the right marker operating plate 85R is rotated. As a result, the marker wire 87R for the right marker is pulled, and the right marker 105 is activated. Similarly, when the planting lifting / lowering lever 55 is operated to the left by “planting”, the marker operating rod 83 rotates downward, the left marker operating plate 85L rotates, and the left marker 105 operates. become.

  As shown in FIG. 11, a grip 57a is attached to the tip of the recoil rope 57. Normally, the recoil rope 57 is gripped by a cylindrical holder 88 provided on the right side surface of the bonnet portion 50a so as to be rotatable about a left-right axis. 57a is held. For this reason, the recoil rope 57 can be pulled from both the position of the vehicle and the position of the vehicle body on the front side.

  Further, as shown in FIG. 13, even if the holder 88 ′ for holding the recoil rope grip 57a is formed in a cup shape with the upper portion wide open in the front-rear direction, the recoil rope 57 is lowered from the vehicle body on the vehicle front side. Can be pulled from any position.

  In the lifting link device 3, a pair of left and right upper links 90, 90 and a pair of left and right lower links 91, 91 that are parallel to each other in a side view are rotatably supported by the link support frames 25, 25. A connecting frame 92 is pivotally connected to the end. The connecting frame 92 is provided with a rolling shaft 93, and the seedling planting part 4 is connected to the rolling shaft so as to be freely rollable. A swing arm 94 is provided so as to rotate integrally with the lower links 91, 91, and a piston rod of a lifting hydraulic cylinder 95 whose base side is supported by the main frame 13 is connected to the swing arm 94. When the lifting hydraulic cylinder 95 is expanded and contracted, each link is rotated up and down, and the seedling planting portion 4 is lifted and lowered with a substantially constant posture. In order to avoid interference with the seedling removal adjusting lever 107 described later, the upper link 90L on the left side is inclined so that the rear end side is on the left and right sides.

  The seedling planting section 4 has a four-row planting structure, and a seedling stand 101 on which mat seedlings are placed on a transmission case 100 that also serves as a frame, and the mat seedlings on the seedling stand are scraped one by one. Four sets of planting devices 102 to be planted on the paddy surface, center float 103 and side floats 104, 104 for leveling, left and right line drawing markers 105 for drawing the left and right centers of the aircraft course in the next stroke to the topsoil surface during planting work , 105 etc. are assembled. The amount of one strain scraped off by the planting devices 102,. Further, the planting depth adjustment lever 108 is operated to change the mounting height of the floats 103, 104, 104 with respect to the transmission case 100, thereby adjusting the planting depth of the seedlings.

  As shown in FIG. 12, the preliminary seedling frame 5 is provided on a seedling frame support frame 110 that is vertically supported by inserting a lower end portion into the support pipe 22. Each seedling frame 5 includes a plate-like base portion 111 fixed to the outer surface of the seedling frame support frame 110, and a holding portion 112 formed by bending a bar and attached to both front and rear ends and the outer end of the base portion. , 112, 113, and holds a seedling box B that accommodates mat seedlings in a state in which the longitudinal direction faces front and rear.

  The holding portions 112 and 112 attached to both front and rear ends of the base portion 111 are attached to the base portion 111 so as to be rotatable with a base portion bent in the left-right direction as a fulcrum. Links 115, 115 are integrally provided on the bases 112 a, 112 a on the side of the seedling frame support frame, and long holes 115 a, 115 a formed in the link, and a long hole 110 a in the vertical direction formed in the seedling frame support frame 110, The hook portion 116b of the interlocking rod 116 is loosely fitted to. The interlocking rod 116 has an upper seedling frame hook portion at the upper end and a lower seedling frame hook portion at the lower end. A seedling frame operating rod 118 biased upward by a spring 117 is provided integrally with the interlocking rod 116, and the seedling frame operating rod and the lever arm 63 of the stop lever 54 are connected by the seedling frame operating wire 119. ing.

  Thus, as shown by the solid line in FIG. 12, when the stop lever 54 is operated to “run”, the seedling frame operating rod 118 is pulled downward via the seedling frame operating wire 119, and the holding portions 112, 112 Is in a state of being lifted horizontally. As indicated by a chain line in FIG. 12, when the stop lever 54 is operated to “stop”, the seedling frame operating rod 118 is pushed up by the tension of the spring 117, and the holding portions 112 and 112 are in a retracted state. As a result, a wide space is formed on the side of the bonnet portion 50a, and the stop lever 54 can be operated easily. Further, in the stored state, the seedling frame does not protrude forward from the front end of the machine body, so there is no space when stored. The configuration for reducing the seedling frame may be adopted only for the seedling frame on the side where the stop lever 54 is provided (left side in the illustrated embodiment).

  FIG. 14 shows a seedling frame configured to be manually reduced. In the seedling frame 5 ′, the holding portions 112 ′ and 112 ′ are engaged with engaging portions 111 a ′ and 111 a ′ formed at both front and rear ends of the base portion 111 ′, and the holding body is kept in use. In order to reduce the seedling frame 5 ′, the holding portions 112 ′ and 112 ′ are bent by hand to disengage from the engaging portions 111 a ′ and 111 a ′, and then face down as indicated by a chain line. When the holding portions 112 ′ and 112 ′ are raised upward, they are automatically engaged with the engaging portions 111 a ′ and 111 a ′ and are in use. Thus, if it is set as the structure which shrinks | reduces a seedling frame manually, a number of parts will decrease and a cost reduction can be performed.

  FIG. 15 shows a different seedling frame. In this seedling frame 5 ″, the front holding portion 112 ″ has a double pipe structure, and when stored, as shown by a chain line, the front end portion 112a ″ of the front holding portion 112 ″ is placed in the base side portion 112b ″. And is reduced so that it does not protrude forward from the front end of the aircraft.

It is a side view of a riding type rice transplanter. It is a top view of a riding type rice transplanter. It is the side view which abbreviate | omitted a part of traveling vehicle body. It is the top view which abbreviate | omitted a part of traveling vehicle body. It is a front view which shows the position of various operation tools. It is a figure which shows the lever guide of a stop lever. It is an operation mechanism figure of a stop lever. It is a perspective view of the principal part of a stop lever operation mechanism. It is a figure which shows the lever guide of a planting raising / lowering lever. (A) A side view of a right marker operation plate, and (b) a side view of a left marker operation plate. It is a side view of a recoil rope attachment part. It is a perspective view of a reserve seedling frame. It is a side view of a different recoil rope attachment part. It is (a) front view and (b) side view of a different reserve seedling frame. Furthermore, it is a top view of another reserve seedling frame.

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter 2 Traveling vehicle body 3 Elevating link apparatus 4 Seedling planting part 5, 5 ', 5 "Reserve seedling frame 7 Front wheel 8 Rear wheel 10 Transmission case 30 Engine 36 Traveling transmission belt 40 Pump transmission belt 41 Traveling tension pulley 42 Pump tension pulley 52 Steering handle 54 Stop lever 55 Planting lift lever 57 Recoil rope 58 Clutch pedal 105 Drawing marker

Claims (1)

A steering handle (52) is provided on the upper side of the bonnet part (50a) in front of the seat (51), and a stop lever (54) capable of performing a traveling stop operation in a state where the aircraft is lowered to the side of the bonnet part (50a). The spare seedling frames (5) provided on the left and right sides of the front part of the fuselage can be changed between a use state in which the front end protrudes from the front end of the fuselage and a storage state in which the front part of the fuselage is stored behind the front end. A holder (88 ') for holding the grip (57a) of the recoil rope (57) is provided on the side surface of the bonnet part (50a), and the recoil rope (57) is lowered from the vehicle body on the front side of the vehicle body, even on the vehicle. The holder (88 ') is configured in a cup shape with the upper part opened wide in the front-rear direction so that the holder (88') can be pulled even from the front , and the preliminary seedling frame (5) is formed between the base part (111) and the front and back of the base part (111). Protected by Part (112), and the holding part (112) is rotatably attached to the base part (111). When the stop lever (54) is operated to the travel position, the seedling frame operating wire (119) is When the holding portion (112) is rotated with respect to the base portion (111), the holding portion (112) is lifted horizontally, and the stop lever (54) is operated to the stop position. The holding portion (112) is rotated with respect to the base portion (111) via the seedling frame operation wire (119), and the holding portion (112) is in a storage state in which it hangs down. Riding type rice transplanter .

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