JP2005312340A5 - - Google Patents

Description

Fertilizer transplanter

  The present invention relates to a fertilizer planting machine.

In a vehicle for seedling planting, left and right brake pedals are provided on the right front part of the seat, a main clutch pedal is provided on the left front part of the seat, and the left and right front wheels are located near the rear center of the main clutch pedal. It is known that a differential lock pedal is provided to limit the above (Patent Document 1).
JP 2001-301480 A

  In the prior art, the left and right brake pedals are provided on the right front part of the seat, the main clutch pedal is provided on the left front part of the seat, and the differential lock pedal is provided near the rear center of the main clutch pedal. The brake pedal, the main clutch pedal, and the differential lock pedal have to be operated with the left and right feet, and there is a problem that the stepping operation is troublesome.

  Therefore, the present invention is intended to enable the combined operation of the brake and the main clutch with a single pedal operation, and to streamline the arrangement of the left and right pedals, thereby facilitating the operation.

In addition, the switch is arranged separately on the left and right of the handle post to improve operability.

  In order to solve the above problems, the present invention has taken the following technical means.

According to the first aspect of the present invention, a seedling is provided behind a traveling vehicle body (2) having an engine (20), a seat (22), left and right front wheels (7), and a rear wheel (8) via a lifting link mechanism (3). The planting part (4) is provided so as to be movable up and down, the body part of the fertilizer device (5) is provided at the rear part of the traveling vehicle body (2), and the front wheel (7) is provided above the handle post (16) provided at the front side part of the machine body. In a fertilizer planter having a steering handle (24) for operating the steering wheel and an operation panel (61) on the handle post (16), a seedling planting portion is provided on the left panel (61a) of the operation panel (61). (4) The hydraulic sensitivity adjustment switch (63) and the headlight switch (64) for adjusting the lifting sensitivity are provided, and the fertilizer is provided with a key switch (67) for starting the engine on the right side of the handle post (16). A rice transplanter.

According to this configuration, the engine start key switch (67), which is used frequently, is arranged on the right side of the handle post (16), and the switches are arranged on the left and right sides of the handle post (16). Therefore, the operability can be improved.

The invention of claim 2 transmits power from the engine (20) to the left and right front wheels (7) and the rear wheels (8) via the forward / reverse switching device (29) and the inside of the transmission case (10). In the transmission case (10), a switching gear (42) that is switched by a shift lever (65), a brake device (44) that brakes the left and right front wheels (7) and rear wheels (8), and left and right front wheels ( 7), and the switching gear (42) includes a large-diameter gear (42a) and small-diameter gears (42b, 42c, 42d) for braking the brake device (44) , provided forward-reverse switching device (29) brake pedal which can be carried out collectively return and deceleration adjustment of engine speed to the neutral position of the (58) to the right front of the seat (22), seats (22) On the right and the brake pedal And Le (58) of the rear right and left front wheels according to claim 1 provided with a differential lock pedal (60) that limits the differential (7) fertilization rice transplanter.

According to this configuration, when the operator depresses the brake pedal (58) with the right foot, the left and right wheels are switched between braking and forward / reverse. That is, the return to the neutral position of the forward / reverse switching device (29) and the reduction adjustment of the rotational speed of the engine (20) are collectively performed, and the differential lock pedal located behind the differential lock pedal (60) is also performed. When the dull (60) is stepped on with the right foot, the differential between the left and right front wheels (7) is limited, and the left and right front wheels (7) are driven at a constant speed.

According to the first aspect of the present invention , the key switch 67 for starting the engine that is frequently used can be arranged on the right side of the handle post 16 and the switches are arranged separately on the left and right of the handle post 16. The operability can be improved.

Further, according to the invention of claim 2, since the brake pedal 58 and the differential lock pedal 60 are arranged in the front and rear on the right side of the body, both the pedals 58 and 60 can be operated only by moving the right foot forward and backward. The operation is simplified and the operation is facilitated. Further, since both the pedals 58 and 60 are operated with the right foot, there is no hesitation at the time of operation, and both the pedals 58 and 60 are not operated at the same time without waste. can do.

(Example)

  Embodiments of the present invention shown in the drawings will be described below.

  1 and 2 show an overall side view and a plan view of a fertilizer transplanter equipped with a traveling vehicle body according to the present invention.

  This fertilizer planter 1 is provided with a six-planted seedling planting part 4 on the rear side of the traveling vehicle body 2 via a lifting link device 3 so as to be movable up and down. A main body is provided. In addition, on the left and right sides of the front portion of the traveling vehicle body 2, three left and right preliminary seedling frames 6 are provided. Since the seedling planting unit 4 and the fertilizer application device 5 are known configurations, description thereof is omitted.

  The traveling vehicle body 2 is a four-wheel drive vehicle body including left and right front wheels 7 and 7 and rear wheels 8 and 8 which are traveling propulsion bodies, and as shown in FIG. 3, a mission disposed at the front portion of the vehicle body. Front wheel axle cases 11 and 11 extend from the left and right sides of the case 10 to the left and right sides, and the front wheels 7 and 7 are rotatably supported by front wheel final cases 12 and 12 which are provided at the front ends of the case 10 so as to be capable of turning. Yes. Further, a pair of left and right main frames 13 and 13 are extended rearward on the rear portion of the mission case 10, and rear frames 14 are attached to the rear end portions of the main frames 13 and 13 so as to extend on both the left and right sides. Rear wheels 8 and 8 are rotatably supported by rear wheel final cases 15 and 15 which are fixed to the left and right ends of the rear frame 14.

  An engine 20 is mounted above the middle part of the main frames 13, 13 in the front-rear direction, the upper side of the engine 20 is covered with an engine cover 21, and a seat 22 is installed above the engine cover 21. A handle post 16 is provided in front of the seat 22, a steering handle 24 is provided above the handle post 16, various operation mechanisms and electrical components are arranged around the handle post 16, and the handle post 16 and the various operation mechanisms are arranged. A hood 23 that can be freely opened and closed is provided so as to cover the electrical components. Around the engine cover 21 and the hood 23, a step 25 is provided for a person to move or work.

  Next, the power transmission mechanism of the traveling vehicle body 2 will be described.

  An engine output shaft 20a protrudes from the left side surface portion of the engine 20, and the rotational power of the engine output shaft 20a passes through a belt-type transmission device 26 with a main clutch 27 and is provided on the left side surface portion of the transmission case 10 (HST ( Is transmitted to the HST input shaft 30 of the hydraulic continuously variable transmission) 29.

  FIG. 5 is a transmission development view showing the internal structure of the mission case 10 and the HST 29. The variable displacement hydraulic pump 29a is driven by the power input to the HST input shaft 30, and the hydraulic pressure discharged from the hydraulic pump 29a is sent to and driven by the hydraulic motor 29b through the circulation circuit, and the HST output shaft of the hydraulic motor 29b is driven. The power is transmitted from 31 to the input shaft 32 of the mission case 10.

  An input shaft 32, an intermediate shaft 33, and a switching shaft 34 to which power is transmitted from the HST 29 are mounted on the input portion of the mission case 10. Left and right differential output shafts 35 and 35 and left and right interlocking output shafts 36 and 36 are mounted on the traveling transmission portion of the mission case 10, and the work machine transmission portion to which power is transmitted from the input portion. Are provided with a deceleration shaft 37, an overhang shaft 38, a work machine output shaft 39, and the like.

  The HST 29 is arranged in the vertical and longitudinal length dimensions of the mission case 10 in a side view to reduce the center of gravity and to make the configuration compact, and the engine power received by the HST input shaft 30 is switched between normal and reverse at the HST 29. Then, it is continuously variable and transmitted to the input shaft 32. The rotational power of the input shaft 32 is transmitted to the switching shaft 34 via a reduction gear group such as the gear 40 and the intermediate gear 41 of the intermediate shaft 33. The switching shaft 34 is provided with a shift gear 42 and a shifter 43 for selecting the switching position. ing.

  As shown in FIG. 7, the switching gear 42 includes a reverse large gear 42a, a work forward small gear 42b, a PTO work small diameter gear 42c, and a moving travel small diameter gear 42d. The switching of 42 is set to be shifted to the left and right in the order of 4 switching positions, that is, the reverse position at work (A), the forward position at work (B), the PTO work position (C), and the moving travel position (D). The rotation direction of the HST 29 at these four switching positions is as follows. The reverse position during work (A) is the reverse side, the forward position during work (B), the PTO work position (C), and the traveling position (D) is the forward side. In this configuration, the forward / backward movement of the HST 29 is switched in association with the movement of the shift lever 65 described later to the switching position.

  A brake device 44 is provided at one end of the switching shaft 34, and the switching shaft 34 can restrain rotation on the input side of the travel transmission unit by the brake device 44.

  A differential mechanism 46 that transmits power from the switching shaft 34 to the differential case 45 is provided between the left and right differential output shafts 35 and 35 so that the power transmitted to the differential case 45 is differentially output, and the left and right front wheels 7 and 7 are driven. The left and right sleeve shafts 47 and 47 are attached to both sides of the differential case 45 so as to extend between the sleeve shafts 47 and 47 and the interlocking output shafts 36 and 36. Transmission mechanisms 48 and 48 are provided to transmit power directly from the sleeve shafts 47 and 47 to the interlocking output shafts 36 and 36. The interlocking output shafts 36, 36 are arranged so as to be orthogonal to the left and right differential output shafts 35, 35, and the rear end of the transmission case 10 is interposed via the respective speed adjusting clutches 49, 49. The power is transmitted from the interlocking output shafts 36, 36 to the left and right rear wheels 8, 8.

  Thus, the power transmitted to the differential case 45 of the differential mechanism 46 is directly transmitted to the left and right interlocking output shafts 36 and 36 via the left and right sleeve shafts 47 and 47 and the transmission mechanisms 48 and 48. The driving forces of the rear wheels 8 and 8 at the left and right constant speed are output from the rear portion of the mission case 10 via the 36 and 36.

  The work transmission portion includes a reduction gear 37 having a large-diameter gear 50 and a small-diameter gear 51 for reduction. Power is transmitted from the gear 52 on the intermediate shaft 33 side to the large-diameter gear 50, and the extension shaft 38 is extended from the small-diameter gear 51. Is transmitted to the work machine output shaft 39 via the bevel gears 54 and 55, and the power is transmitted to the rear seedling planting portion 4 via the relay shaft and the like. .

  In constructing the differential mechanism 46, as shown in FIG. 6, a gear 56 to which power is transmitted from the switching shaft 34 and a concave portion 57 produced by pressing an iron plate are tightened with bolts and nuts. If it is configured integrally and the sleeve shaft 47 is welded to the end of the concave portion 57, the manufacture is facilitated and the cost can be reduced.

  Further, as shown in FIG. 5, the mission case 10 is divided into left and right mission cases 10a and 10b on a vertical surface 10c, and the left mission case 10a is provided with a left differential output shaft 35, a differential mechanism 46, and a left side. A transmission mechanism 48 and a left interlocking output shaft 36 are provided, and a right differential output shaft 35, a right transmission mechanism 48 and a right interlocking output shaft 36 are provided in the right mission case 10b. You may comprise so that motive power may be transmitted to the outer right and left interlocking output shafts 36 and 36. With this configuration, the left and right transmission cases can be sub-assembled into the left and right mission cases 10a and 10b, respectively, and the assembly and removal operations can be facilitated. .

Further, when the switching gear 42 is provided on the switching shaft 34, it may be configured as shown in FIG. In other words, the reverse gear large-diameter gear 42a and the work-advancing small-diameter gear 42b are integrally formed, and an engaging portion with the shifter 43 is provided in the gears 42a and 42b. It is configured to straddle. Since the large-diameter gear 42a and the small-diameter gear 42b are integrally configured, the configuration can be simplified and the switching operation can be facilitated.

  Further, since the power transmitted to the input shaft 32 is transmitted to the small diameter gear 42d for moving travel of the switching shaft 34 via the intermediate gear 41 of the intermediate shaft 33, the speed change transmission configuration can be simplified. .

  Next, the arrangement of the shift levers and switches will be described with reference to FIGS.

  A hood 23 is provided on the front side of the machine body so as to cover the handle post 16 and various operation mechanisms, and a steering handle 24 for operating the front wheels 7 and 7 as steering wheels is provided on the top of the handle post 16. An operation panel 61 is provided above 16.

  The left panel 61a of the operation panel 61 is configured as a switch arrangement part for arranging various switches. For example, a turning adjustment switch 62 for adjusting the slow speed when turning the vehicle body, and a hydraulic sensitivity for adjusting the raising / lowering sensitivity of the seedling planting part 4 An adjustment switch 63 and a headlight switch 64 for turning on and off the left and right headlamps, which are steering direction indicators, are provided.

  The right panel 61b of the operation panel 61 is provided with an operation groove 66 for operating the speed change lever 65. The speed change lever 65 is moved to the reverse position 66a, the planting work forward position 66b, the PTO work forward position 66c, and traveling on the road. The moving forward position 66d can be operated.

  Further, the center panel 61c of the operation panel 61 is used as an operation state display portion, and a key switch 67 for starting the engine that is used frequently is provided on the right side of the handle post 16.

  As described above, the shift lever 65 and the switches are arranged separately on the left and right of the handle post 16, so that the operability is improved and the mechanical parts such as a rod and a cable connected to the shift lever 65 are placed on the right side. In addition, electrical components such as fuse boxes connected to the switches can be collectively arranged on the left side, and interference between mechanical components and electrical components can be avoided.

  Further, as shown in FIG. 4, the four-wheel brake pedal 58 is linked to the trunnion arm 59 for operating the HST 29 via the interlocking wire 59a, and the belt type transmission device 26 is connected to the belt type transmission device 26 via the main clutch interlocking wire 27a. When the four-wheel brake pedal 58 is depressed by linking to the main clutch 27 and also to the brake device 44 that brakes the four wheels via the brake interlocking wire 44a, the four-wheel brake function and the neutral holding function of the HST 29 The engine 20 has an associated configuration so as to achieve an idling holding function of the engine 20. The four-wheel brake pedal 58 is arranged in front of the right side of the aircraft as shown in FIG. 2 so that it can be operated with the right foot. In addition, a front-wheel differential lock pedal 60 that restricts the differential between the left and right front wheels 7 and 7 is provided on the substantially same line in the front-rear direction behind the four-wheel brake pedal 58 so that the front-wheel differential lock pedal 60 can be operated with the right foot. doing.

  Since the four-wheel brake pedal 58 and the front wheel differential lock pedal 60 are arranged in the front and rear on the right side of the aircraft as described above, both the pedals 58 and 60 can be easily operated by simply moving the right foot back and forth. Since both the pedals 58 and 60 are operated with the right foot, there is no hesitation at the time of operation, and both the pedals 58 and 60 can be operated without waste without operating them simultaneously.

  Further, the shift lever 65 is disposed on the right side of the handle post 16 and can be moved to the reverse position 66a, the planting work advance position 66b, the PTO work advance position 66c, and the movement advance position 66d during road travel. It is configured as follows. The shift lever 65 is linked to the shifter 43 for operating the switching gear 42 via the shift interlocking mechanism 65a, and is linked to the trunnion arm 59 for operating HST29 via the HST interlocking mechanism 65b. Accordingly, the forward / backward movement of the HST 29 is switched in relation to the movement to the reverse position 66a and the planting work forward position 66b by operating the speed change lever 65 in the forward / backward direction. As a result of this operation, the switching gear 42 is switched to change the speed.

  Further, the rear upper part of the hood 23 is supported on the upper part of the handle post 16 so as to be rotatable up and down around the horizontal axis 68. A controller 69 and electrical components 70 are housed inside the upper portion of the hood 23. When the hood 23 is rotated upward and opened, the controller 69 and the electrical component 70 can be simultaneously rotated to be in an open state.

  Thus, when the hood 23 is opened, the controller 69 and the electrical component 70 are also opened with the surroundings opened, and the inspection work can be facilitated. In addition, since the electrical component 70 is disposed inside the upper portion of the hood 23, the muddy water is hardly applied and the durability can be improved.

Overall side view. Overall plan view. The top view of the principal part. The side view of the principal part. Transmission development diagram. Sectional drawing of the principal part. Sectional drawing of the principal part. The side view of the principal part. The front view of the principal part. The top view of the principal part. The side view of the principal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 : Fertilizer transplanter , 2 : Traveling vehicle body , 3: Lifting link mechanism, 4: Seedling planting part, 5: Fertilizer application, 7 : Front wheel , 8 : Rear wheel , 10: Mission case, 16: Handle post, 20 : Engine , 22 : Seat , 24: Steering handle, 29 : HST , 42: Switching gear, 42a: Large diameter gear, 42b, 42c, 42d: Small diameter gear, 44: Brake device, 46 : Differential mechanism , 58 : Brake handle Dal , 60 : Differential lock pedal , 61: Operation panel, 61a: Left panel, 63: Hydraulic sensitivity adjustment switch, 64: Headlight switch, 65: Shift lever, 67: Key switch

Claims (2)

A seedling planting part (4) is provided via a lifting link mechanism (3) behind a traveling vehicle body (2) including an engine (20), a seat (22), left and right front wheels (7), and a rear wheel (8). Steering handle (24) provided so that it can be raised and lowered, a main body portion of a fertilizer applicator (5) is provided at the rear portion of the traveling vehicle body (2), and a front wheel (7) is operated on an upper portion of a handle post (16) provided at a front side portion of the aircraft ) And an operation panel (61) on the upper part of the handle post (16), the left panel (61a) of the operation panel (61) has a lifting sensitivity adjustment of the seedling planting part (4). The fertilizer transplanter is provided with a hydraulic pressure sensitivity adjustment switch (63) and a headlight switch (64), and a key switch (67) for starting the engine on the right side of the handle post (16). The power from the engine (20) is transmitted to the left and right front wheels (7) and the rear wheels (8) via the forward / reverse switching device (29) and the transmission case (10). Includes a switching gear (42) that is switched by a transmission lever (65), a brake device (44) that brakes the left and right front wheels (7) and the rear wheel (8), and a differential mechanism that transmits power to the left and right front wheels (7). 46), the switching gear (42) is provided with a large-diameter gear (42a) and small-diameter gears (42b, 42c, 42d), and the braking of the brake device (44) and the forward / reverse switching device (29) are neutral. A brake pedal (58) capable of collectively returning to the position and adjusting the deceleration of the engine speed is provided at the right front portion of the seat (22), and is provided on the right side of the seat (22) and the brake pedal (58). Left and right behind) The front wheel (7) fertilization rice transplanter according to claim 1 provided with a differential lock pedal (60) that limits the differential.