JP2008289367A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling transplanter equipped with an apparatus for knowing a real seedling planting area for operation control. <P>SOLUTION: An operation monitor apparatus 33 is equipped with: a travel distance measuring means 100a of a controller 100 for measuring the travel distance of a moving body based on the travel speed of a rear wheel rotary sensor 17; a planting area calculation means 100b for calculating the planting area calculated based on the measurement of the travel distance by the travel distance measuring means 100a; and a planting area correction means 100c that is furnished with a travel distance display part 33a for being displayed on a monitor screen and a seedling planting area notice part 33b for notifying the seedling planting area calculated based on a travel distance and corrects the seedling planting area based on the action of a ridge clutch lever 19 for making only a part of planted ridge of a seedling planting part 4 in an unplanted state. The unplanted state of only a part of the planted ridge of the seedling planting part 4 is sent to the controller 100 and the result is displayed on the seedling planting area notice part 33b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seedling transplanter that can determine a planting area.

2. Description of the Related Art In a seedling transplanter equipped with a seedling planting device with a float, a configuration including a display device that monitors seedling planting work is known.
In this specification, the forward direction of the seedling transplanter is referred to as the front side, the backward direction is referred to as the rear side, and the left-right direction toward the forward direction is referred to as the left side and the right side, respectively.
JP 2002-272221 A

  The seedling transplanter disclosed in the above-mentioned patent document displays on the monitor screen the total time during which the engine of the seedling transplanter is operating, and a lamp that lights when the fuel gauge, engine meter, and heel clutch are disengaged Etc. can be displayed.

However, since the display device using the monitor screen does not record how the seedling transplanter has been used, the management of the seedling transplanter cannot be performed.
The subject of this invention is providing the seedling transplanting machine provided with the apparatus which can know the seedling planting area actually performed so that work management was possible.

The above-mentioned problem of the present invention is solved by the following solution means.
The invention according to claim 1 includes a traveling vehicle body (2), a seedling planting part (4), a traveling distance measuring means (100a) for measuring a traveling distance of the traveling vehicle body (2), and the traveling distance measuring means ( A planting area calculating means (100b) for calculating the planting area based on the measurement of the travel distance by 100a), and a partial non-planting means for setting only a part of the planting line of the seedling planting part to a non-planting state. A seedling transplanting machine provided with (19) and a seedling planting area correcting means (100c) for correcting the seedling planting area based on the operation of the partial non-planting means (19).

  Invention of Claim 2 provided the seedling transplanting machine of Claim 1 which provided the seedling planting area correction | amendment degree change means (24) which changes the correction | amendment degree of the seedling planting area based on a partial non-planting means (19) It is.

  According to the invention described in claim 1, the seedling planting area correction for correcting the seedling planting area based on the operation of the partial non-planting means (19) even when the partial non-planting means (19) is operated. Means (100c) is provided, and transmits to the control device 100 that only a part of the planting strips of the seedling planting part (4) has been put into a non-planting state. Moreover, based on the result, an accurate seedling planting area is obtained, and labor management and subsequent cultivation management are facilitated.

  Since the invention according to claim 2 is provided with the seedling planting area correction degree changing means (24) for changing the correction degree of the seedling planting area based on the partial non-planting means (19), the effect of claim 1 In addition, it can be adjusted to obtain an accurate planting area according to the shape of the field and the planting method.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG.1 and FIG.2 is the left view and top view of the riding type rice transplanter with a fertilizer device which installed the fertilizer device as a granular material supply | feeding-out apparatus which is one Example using this invention. In this riding type rice transplanter 1 with a fertilizer application, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 via an elevating link device 3 so that the seedling planting portion 4 can be moved up and down. Is provided.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally in the front and rear sides at the rear left and right center of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to a rear wheel axle that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via the belt transmission device 21 and the HST 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by the planting transmission shaft 26, and also the fertilizer application device 5 by the fertilization transmission mechanism 28. Is transmitted to.

  The upper part of the engine 20 is covered with an engine cover 30, and a cockpit 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the cockpit 31, and a handle 34 for steering the front wheels 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-like, and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  Further, on both the left and right sides of the front part of the traveling vehicle body 2, the spare seedling platforms 38, 38 on which the replenishment seedlings are placed can be pivoted to a position projecting laterally from the machine body and a position housed inside. Is provided.

  The lifting link device 3 that lifts and lowers the seedling planting portion 4 has a parallel link configuration, and includes a single upper link 40 and a pair of left and right lower links 41 and 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm (not shown) integrally formed with the upper link 40, and the cylinder 46 is expanded and contracted by hydraulic pressure. The upper link 40 pivots up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The seedling planting section 4 has an eight-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and reciprocates left and right to supply seedlings one by one to the seedling outlet 51a, and horizontally When all the seedlings are supplied to the seedling outlet 51a, the seedling feed belt 51b is used to transfer the seedlings downward by a seedling feeding belt 51b, and the seedling planting is carried out in the field. Attaching device 52,..., A pair of left and right drawing markers (not shown) for drawing the aircraft path in the next stroke to the topsoil surface, and the like are provided. A center float 55, a pair of left and right side floats 56, 56, and a middle float 57, 57 between the center float 55 and a pair of left and right side floats 56, 56 are respectively provided at the bottom of the seedling planting portion 4. Is provided. When the aircraft is advanced with the floats 55, 56, 57 in contact with the mud surface of the farm, the floats 55, 56, 57 slide while leveling the mud surface, and the seedling planting device 52, ... Seedlings are planted. Each of the floats 55, 56, and 57 is rotatably attached so that the front end side thereof moves up and down in accordance with the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor during planting work. The planting depth of the seedling is always kept constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4 according to the detection result. .

  The fertilizer applicator 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a fixed amount by the feed portions 61,... And applies the fertilizer to the left and right sides of the floats 55, 56, 57 with the fertilizer hoses 62,. Guide 47 (FIG. 1), and so on, so that it is dropped into the fertilization structure formed near the side of the seedling planting ridge 48 (FIG. 1) provided on the front side of the fertilizer guide 47,. It has become. Air generated by a blower 58 driven by an electric motor (not shown) is blown into the fertilizer hose 62 through a long air chamber 59 in the left-right direction, and the fertilizer in the fertilizer hose 62 is ... It is forcibly transported.

  A rotor 27 (27a, 27b) which is an example of a leveling device is attached to the seedling planting unit 4. In addition, the seedling mount 51 is configured to slide in the left-right direction using a support roller 65a of a rectangular support frame 65 having a full width in the left-right direction and the vertical direction that supports the entire seedling planting unit 4 as a rail.

  The transmission lever 16 is disposed on the right side of the cockpit 31, and the work monitor device 33 (FIG. 2) is disposed on the top of the front cover 32.

  As shown in the control block diagram of FIG. 3, when the travel distance of the traveling vehicle body is measured by the travel distance measuring means 100 a of the control device 100 based on the travel speed of the rear wheel rotation sensor 17, the measurement result is the travel of the work monitor device 33. It is displayed on the distance display part 33a. Further, the planting area calculation and knowing means 100b calculates the planting area based on the travel distance measurement by the travel distance measuring means 100a, and the result is notified to the seedling planting area notifying section 33b of the work monitoring device 33. .

  Since the travel distance and planting area are not necessary information sequentially during the planting operation, the travel distance display unit 33a and the seedling planting area notification unit 33b are arranged in the front cover 32 so that the operator can install the front cover. It is good also as a structure which can open 32 and can recognize a travel distance and a planting area.

  Further, the seedling transplanting machine of the present embodiment is provided with the heel clutch lever 19 which is a partial non-planting means for setting only a part of the planting strips of the seedling planting portion 4 to a non-planting state. The control device 100 is provided with a seedling planting area correction means 100c that corrects the seedling planting area based on the operation of 19, and only a part of the planting strips of the seedling planting unit 4 is put into a non-planting state. To the control device 100. Moreover, it can display on the seedling planting area notification part 33b based on the result.

  Furthermore, the planting area is corrected by the work area adjustment dial 24 in accordance with the shape of the field and the planting method by turning on / off the rod clutch sensor 14 that detects the operation position of the rod clutch lever 19, and an accurate planting area is obtained. It can be adjusted to obtain.

As described above, the correction coefficient at the time of calculating the work area can be set from the outside by the heel clutch lever 19 and the work area adjustment dial 24, so that the planting area of the seedling can be accurately calculated, labor management and cultivation after seedling planting. Management becomes easy.
Further, if the personal authentication password is input to the control device 100 by the control mechanism when the seedling transplanter is activated, the work monitor device 33 can know who has done how much and help labor management. .

FIG. 4 shows a left side view of a portion where the cockpit 31, the engine room below it, and the fertilizer application device 5 are installed. A radiator 20 a is disposed behind the engine cover 30, and air sent rearward by a fan 20 b that cools the radiator 20 a is sent toward an air inlet 58 a ′ of an air guide 58 a of a blower 58 below the fertilizer hopper 60. .
In addition, since the fuse box 20c is disposed immediately behind the engine 20 inside the engine cover 30, heat generation in the fuse box 20c can be suppressed by blowing air from the radiator cooling fan 20b.

  FIG. 5 shows a left side view of the seedling planting device 52. A planting stand 54 is attached to the seedling planting device 52, and the planting stand 54 is an L-shaped member whose one end is rotatably attached to the rear side of the seedling planting device 52.

  When planting seedlings using the seedling planting device 52, the planting stand 54 is arranged at a position indicated by a solid line so as not to obstruct seedling planting. Further, when the seedling planting device 52 is not used, the planting stand 54 is disposed at a position indicated by a dotted line (a two-dot chain line) so that the seedling planting device 52 does not touch the ground.

  Further, since a hole for attaching a spreader or the like is provided at the tip of the planting stand 54, when the planting stand 54 is arranged at the solid line position when the seedling planting device 52 is planting, the stand The medicine spreader 99 may be installed using the hole at the tip of 54.

  Further, the hole at the tip of the planting stand 54 can be used as a part of the temporary fixing member of the seedling stopper 101. When the seedling stopper 101 is attached to the seedling stopper attaching portion 51c at the lower end of each of the eight seedling placement platforms 51 so that the seedbed N does not slide to the seedling outlet 51a (FIG. 2) below the seedling placement platform 51. , You will not be able to plant seedlings in the corresponding section. The case where the planting of the seedlings is prohibited is that when the seedling planting device 52 is stopped by a plurality of strips (every two strips) and the planting strips (odd strips) cannot be planted by the heel clutch, This is a case where only a part of the planting unit (article 2) that is stopped by the heel clutch is performed.

  The operator has changed the seedling planting area by attaching the seedling stopper 101 to the seedling stopper mounting portion 51c at the lower end of some seedling mounts 51 so that some seedling planting devices 52 cannot be operated. Is transmitted to the control device 100 by the work area adjustment dial 24, and the control device 100 recognizes that the seedling planting area has been corrected, and after storage, if necessary, the planting area notification unit 33b of the work monitor device To display.

  FIG. 7 is a development plan view of the seedling planting part 4 in FIG. 6, FIG. 7 is a partial arrow view of the rake attachment part seen from the direction of arrow A in FIG. 6, and the side surface of the lower half of the seedling mounting base 51 in FIG. As shown in the drawing and the sectional side view around the slider in the lower half of the seedling stage 51 in FIG. 9, the seedling stage 51 is a rear side of the seedling mounting surface and is provided in the horizontal direction at the lower part on the back side. It is supported along the frame 81 so as to be movable left and right. The horizontal frame 81 is provided with eight seedling outlets 51a. Protruding from the left and right sides of the power transmission case 50 from the engine, a laterally moving rod 82 is provided that reciprocates horizontally in the lateral direction with the power in the transmission case 50, and a connecting member fixed to both ends of the laterally moving rod 82. 83 and the seedling stage 51 are connected to each other, and the horizontal movement bar 82 reciprocates left and right so that the seedling stage 51 reciprocates left and right.

  The transmission case 50 is provided with a lead cam 88 and the lead cam shaft 88 a that is screwed into the lead cam 88. Therefore, the intermediate portion of the lateral movement rod 82 is fixed to the lead cam 88 by the transmission case 50, and is configured to reciprocate left and right by the drive rotation of the lead cam shaft 88a. The lead cam shaft 88a is provided with a seedling feeding cam 88b.

  Left and right moving guide members 120 and 121 (FIG. 8) that are long in the left and right direction are respectively fixedly provided on the upper and lower sides of the back side of the seedling table 51. The upper left / right moving guide member 120 is formed in a gate-shaped cross-sectional shape with the lower side cut out in a side view, and engages with a rotatable support roller 65a (FIG. 1) supported from the lower side. ing. A plurality (four) of the support rollers 65a are provided at appropriate positions (four locations) along the upper left / right moving guide member 120, and the upper portion of the seedling support frame 65b fixed to the upper side of the transmission case 50 is provided. Is attached.

  As shown in FIG. 9, the lower left and right moving guide member 121 includes a gate-shaped cross-sectional shape portion 121 a with a lower side cut out in a side view and a quadrilateral cross-sectional shape portion 121 b immediately above the gate-shaped cross-sectional shape portion 121 b. A slider 124 is fixed to the cross-sectional shape portion 121a. The slider 124 has a structure in which a protrusion 124 a provided on the upper portion is inserted into an attachment hole provided on the lower left and right moving guide member 121 and is fixed, and the slider 124 is appropriately arranged along the lower left and right moving guide member 121. A plurality (four) are provided at positions (four places), and engage with a rail portion 81a provided on the upper portion of the horizontal frame 81 from above. Accordingly, the seedling stage 51 is supported by the support roller 65a and the horizontal frame 81 so as to be movable in the left-right direction. Further, the support roller 65a and the slider 124 are sliding members made of polyethylene resin (ultra high molecular weight polyethylene).

  The slider 124 has a gate-shaped or U-shaped cross-sectional shape with the lower side cut out in a side view, and has a U-shaped sliding surface formed of three planes inside. A main sliding surface 124b having the widest area among the three planes is formed at the center of the U-shaped sliding surface in side view, and the normal direction of the main sliding surface 124b is the most vertical among the three planes. Near the direction, the contact pressure of the contact surface of the main sliding surface 124b is the highest.

  Further, a liquid supply path 125 extending from the upper part of the seedling stage 51 to the upper corner 124c of the main sliding surface 124b of the slider 124 is provided, and the sliding surface 124b of the slider 124 is provided via the liquid supply path 125. By supplying lubricating oil from the lubricating oil tank 126 via the discharge pump 127, the sliding portion can be lubricated. Lubricating the sliding portion with the lubricating oil can improve the slidability of the seedling stage 51 and can prevent the slider 124 and the rail portion 81a from being worn.

  The lubrication oil running out of the sliding surface 124b is detected by the near-infrared sensor 129 provided in the rectangular cross-sectional portion 121b of the lower left and right moving guide member 121, and the operation of the discharge pump 127 is controlled.

  In order to configure the liquid supply path 125, holes are formed in the lower left and right moving guide member 121 and the slider 124. Further, since the liquid supply path 125 is configured to face the uppermost position of the sliding surface of the slider 124, the lubricating oil can be spread over the entire U-shaped sliding surface, and the lubricity is improved. .

  The seedling feeding belt 51b is stretched around a driving roller 84 and a driven roller 85 (FIG. 1). The drive roller 84 is provided so as to rotate integrally with the seedling feed drive shaft 86 in the left-right direction. The seedling feeding drive shaft 86 is configured to transmit rotation only in the direction in which the seedling feeding belt 51b feeds the seedling by the ratchet mechanism 87.

  The drive mechanism of the seedling feeding belt 51b has the following configuration. That is, the seedling feed cam 88b is provided on the lead cam shaft 88a that protrudes from the left and right sides of the transmission case 50 and is driven to rotate. Further, as shown in FIGS. 6 and 8, a relay shaft 89 in the left-right direction is provided above the seedling feed drive shaft 86, and a driven arm 90 is attached thereto. The relay shaft 89 and the seedling feed drive shaft 86 are connected in transmission by a link mechanism 94 including arms 91 and 92 and a link 93.

  When the seedling platform 51 reaches the end of the left-right movement stroke, the seedling feeding cam 88b comes into contact with the driven arm 90 from below, and rotates the relay shaft 89 by a predetermined angle. The rotation is transmitted to the seedling feed drive shaft 86 via the link mechanism 94 and the ratchet mechanism 87. As a result, the seedling feeding belt 51b operates by a predetermined amount. In addition, two driven arms 90 are provided on the same relay shaft 89 to the left and right with respect to one seedling feeding cam 88b so that the seedling placing platform 51 can transmit seedling feeding power at both ends of the right and left movement. It has been. When the seedling feeding cam 88b is separated from the driven arm 90, the relay shaft 89 and the driven arm 90 are returned to the pre-driving position by the tension of a spring (not shown) locked to a swing fulcrum shaft 95 described later. Note that the relay shaft 89 and the driven arm 90 have a spring 97 (not shown) tension, and a stopper 97 provided at the end of the relay shaft 89 contacts a regulating member (not shown) on the seedling stage 51 main body side. It is configured to return to the contact position.

  By the way, the seedling feed drive shaft 86 is divided into a left four-line portion and a right four-line portion. The relay shaft 89 is also divided into a left relay shaft and a right relay shaft. Corresponding to the left and right seedling feed drive shafts 86 and the relay shaft 89, the seedling feed cam 88b, the link mechanism 94, and the two left and right driven arms 90 are also provided on the left and right, respectively.

  As shown in FIG. 8, in the driven arm 90, a base portion 90a near the center of rotation and a rotating tip side portion 90b with which the seedling feeding cam 88b abuts are configured separately, and both portions 90a and 90b are arm 90. They are connected by a left and right swing support shaft 95 provided in the middle. The base portion 90 a is configured to rotate integrally with the relay shaft 89, and the rotation tip side portion 90 b is provided with a swing fulcrum shaft 95 by a torque spring (not shown) provided on the swing fulcrum shaft 95. It is biased in a direction to rotate upward (opposite to the side in contact with the transmission to the seedling feeding belt 51b), and normally contacts the relay shaft 89 so as not to rotate further upward. Therefore, at the time of normal seedling feeding transmission in which the seedling feeding cam 88b comes into contact with the driven arm 90 from below, the base portion 90a and the rotating tip side portion 90b of the driven arm 90 are integrally formed around the relay shaft 89. Rotate upward. On the other hand, when the seedling feeding cam 88b is reversed and comes into contact with the driven arm 90 from the upper side, only the rotating tip side portion 90b comes into contact with the base portion 90a at the lower side (in transmission to the seedling feeding belt 51b). To the side) against the torque spring.

  When the aircraft is advanced with the floats 55, 56, and 57 below the seedling planting part 4 in contact with the mud surface of the field, the floats 55, 56, and 57 slide while leveling the mud surface. The seedlings are planted by the seedling planting device 52. Each of the floats 55, 56, and 57 is rotatably attached so that the front end side thereof moves up and down in accordance with the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor during planting work. The planting depth of the seedling is increased by switching the hydraulic valve (not shown) that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4. Always keep it constant.

  FIG. 10 shows the rice transplanter 1 that is connected to the shift lever 16, the hydrostatic continuously variable transmission neutral and four-wheel brake pedal 141 of the left and right wheels, and the trunnion shaft 23a of the hydrostatic continuously variable transmission (HST) 23. The figure seen from above is shown. As shown in FIG. 10, the shift lever 16 is arranged on the right side of the cockpit 31, a four-wheel brake pedal 141 is arranged on the left or right side of the cockpit 31, and the HST 23 is arranged in front of the cockpit 31. .

  In addition, one end of a rod 161 is rotatably connected to an end of a brake pedal arm 141a having a rotation shaft 141b as a rotation fulcrum, and the other end of the rod 161 is rotated to an intermediate portion of the HST neutral cam 160. Connected freely. One end of the HST neutral cam 60 is connected to the shift lever fixing cam 162, and the shift lever fixing cam 162 is connected to one end of the rod 164 (see FIG. 11 for details).

  The other end of the rod 164 is connected to one end of a speed change operation arm 143 having a trunnion shaft 23a of the HST 23 as a rotation axis. The speed change operation arm 143 having the trunnion shaft 23a as a rotation shaft rotates about the trunnion shaft 23a as a fulcrum. However, the speed change rod 144 can also rotate freely at the end of the arm 143 opposite to the connecting portion with the rod 164. The other end of the speed change rod 144 is attached to the airframe in a direction parallel to the axle, and is connected to one end of a cylindrical body 145 that is rotatable in the axial direction via a first attachment piece 147a. Are connected. A second mounting piece 147b fixed to the other end of the cylindrical body 145 is provided, and an HST rod 148 rotatably connected to the second mounting piece 147b is rotatably connected to the base of the transmission lever 16. .

  When the brake pedal 141 is stepped on from the linkage mechanism of the speed change lever 16, the brake pedal 141, and the trunnion shaft 23a of the HST 23, the speed change operation arm 143 having the trunnion shaft 23a as a rotation shaft rotates in the direction of arrow A. The trunnion shaft 23a is rotated to return the HST 23 to the neutral position. At this time, the speed change lever 16 also returns to the neutral position via the speed change operation arm 143 having the trunnion shaft 23a as the rotation axis.

  Similarly, when the shift lever 16 is operated to the neutral side, the shift operation arm 143 rotates in the direction of arrow A to rotate the trunnion shaft 23a and return the HST 23 to the neutral position.

  As described above, the brake pedal 141 and the shift lever 16 are arranged on the left and right sides of the HST 23, and the shift operation arm 143 is operated by the brake pedal 141 and the shift lever 16 respectively connected to both ends of the shift operation arm 143. Therefore, the configuration for returning the transmission lever 16 to the neutral position is rationally arranged, and the transmission lever 16 is operated directly by the depression of the brake pedal 141 as in the prior art, so that the transmission lever 16 is neutral. The structure is simpler than that of a mechanical coupling mechanism that returns to the position and the HST 23 is neutralized by the operation of the transmission lever 16, and the operation of the transmission lever 16 and the brake pedal 141 is easy and a simple connection configuration. Therefore, the accuracy of stop interlocking of the HST 23 by brake braking is better than that of the prior art.

  Further, as shown in the left side view of the vicinity of the pedal 141 in which the hydrostatic continuously variable transmission neutral and four-wheel brake pedal 141 shown in FIG. 11 is arranged on the left side of the cockpit 31, the HST neutral and four wheels on the left side of the cockpit 31 are shown. The wheel brake pedal 141 is interlocked with an HST neutral cam 160 via a rod 161, and the HST neutral cam 160 is also interlocked with a shift lever fixing cam 162. The HST neutral cam 160 is a “H” -shaped member in side view, and the other end of the rod 161 whose one end is connected to the HST neutral and four-wheel brake pedal 141 is the “H” -shaped of the neutral cam 160. Connected to the top. One end of the HST neutral cam 160 is rotatably connected to the airframe, and a projection 160a is provided at the other end. The projection 160a is inserted into an arc-shaped elongated hole 162a provided in the shift lever fixing cam 162. I wear it.

  Accordingly, when the HST neutral and four-wheel brake pedal 141 is depressed in the direction of arrow A in FIG. 11, the rod 161 moves in the direction of arrow B, and the HST neutral cam 160 is interlocked with the movement of the rod 161 in the direction of arrow B. However, after rotating for a while, the shift lever fixing cam 162 rotates in the direction of arrow D around the rotation shaft 162b. As the shift lever fixing cam 162 rotates in the direction of arrow D, the shift lever 16 shown in FIG. 10 returns to the neutral position via the rod 164 connected to one end of the shift lever fixing cam 162.

  Since the shift lever fixing cam 162 and the HST neutral cam 160 are arranged in the vicinity of each other, and the respective rotating shafts 162b and 160b are provided separately, the pedal closer to the HST 23 than the shift lever 16 (HST neutral and four-wheel brake). The neutral pedal can be reliably restored by the pedal 141).

  In addition, the HST fixed cam 162 interlocked with the speed change lever 16 via the rod 164 has a plurality of circular grooves into which position rollers 165 biased by springs (not shown) are inserted in order to change the operation of the speed change lever 16 stepwise. Since it is provided with 162c, it is possible to perform a stepped shift according to the operation of the shift lever 16.

  Further, as shown in FIG. 10, the transmission lever 16 and the saddle clutch lever 19 are arranged at adjacent positions, and their pivots are arranged coaxially or close to each other. As shown in FIG. 2, since the speed change lever guide 16a is provided on the same guide plate in parallel with the saddle clutch lever guide 19a, the cost can be reduced by integrating parts, and the design space can be reduced.

  In addition, an inter-stock lever 22 is provided between the transmission lever 16 and the cockpit 31. The inter-strain lever 22 is a lever that adjusts the planting interval of the seedlings before and after the advancing direction of the machine body, and the inter-strain can be adjusted by changing the rotation interlocking speed of the seedling planting tool according to the traveling speed. The inter-stock lever 22 is also located adjacent to the speed change lever 16 and the saddle clutch lever 19 so that its rotation fulcrum is coaxial with or close to the rotation fulcrum of both levers 16, 19, and in parallel with the speed change lever 16. The inter-stock lever guide 22a is provided on the same guide plate in parallel with the speed change lever guide 16a and the saddle clutch lever guide 19a. Therefore, the cost can be reduced by integrating the parts, and the design space can be reduced.

The shift lever 16 is configured so that its mounting position can be changed as a horizontal shift lever in a lever guide hole 39 (FIG. 2) disposed beside the work monitor device 33 at the top of the front cover 32.
This is in order to meet the demand for the user to place the shift lever mounting position not at the side of the cockpit 31 but at the lateral shift lever position of the front cover 32.
When the lateral transmission lever is not used, the lever guide hole 39 is provided with a lid so that dust does not enter.

  As a result, the arrangement of the transmission lever 16 can be changed back and forth with a simple configuration, and the lever cover can be shared regardless of the arrangement of the transmission lever 16 by closing the lever guide hole 39 with the lid. . If the lid is welded to the fuselage cover, the lid is not accidentally removed, and entry of dust, rainwater, etc. can be reliably prevented.

  As shown in FIGS. 6 and 7, a rake 132 is attached to the lead cam bearing plate 130 of the planting part transmission case 50 via a rake attachment plate 131. The rake 132 is arranged at a position where the footsteps of the left and right front and rear wheels 10, 11 are leveled, and is in a position where the field between the float 56 and the float 57 is leveled. Further, the rake mounting plate 131 is fixed to the planting portion transmission case 50 by fastening the lead cam bearing plate 130 and the bolt together, thereby reducing the number of parts and reducing the cost.

  INDUSTRIAL APPLICABILITY In the present invention, the seedling planting part of the rice transplanter can be configured simply and can be used.

It is a side view of the riding type rice transplanter of the Example of this invention. It is a top view of the riding type rice transplanter of FIG. It is a control block diagram of the principal part of the riding type rice transplanter of FIG. FIG. 2 is a left side view of a portion where the cockpit, the engine room underneath, and the fertilizer are installed in the riding type rice transplanter of FIG. 1. It is a left view of the seedling planting apparatus of the riding type rice transplanter of FIG. It is an expansion | deployment top view of the seedling planting part of the riding type rice transplanter of FIG. It is the partial arrow line view seen from the arrow A direction of FIG. It is a side view of the lower half part of the seedling mounting stand of the riding type rice transplanter of FIG. It is a cross-sectional side view of the slider periphery of the lower half part of the seedling mounting stand of the riding type rice transplanter of FIG. FIG. 2 is a plan view of the connecting mechanism of the shift lever, the left and right wheel HST neutral and four-wheel brake pedals, and the HST trunnion shaft of the riding type rice transplanter of FIG. 1 viewed from above the rice transplanter. It is a partial side view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter with fertilizer application 2 Traveling vehicle body 3 Elevating / lowering link device 4 Seedling planting part 5 Powder body feeding device (fertilizer) 10 Front wheel 11 Rear wheel 12 Mission case 13 Front wheel final case 14 Side clutch sensor 15 Main frame 16 Transmission lever 16a Transmission lever guide 17 Rear wheel rotation sensor 18 Rear wheel gear case 19 畦 Clutch lever 19a 畦 Clutch lever guide 20 Engine 20a Radiator 20b Radiator cooling fan 20c Fuse box 21 Belt transmission device 22 Stock lever 22a Stock lever guide 23 HST 23a Trunnion Shaft 24 Work area adjustment dial 25 Planting clutch case 26 Planting transmission shaft 27 (27a, 27b) Rotor 28 Fertilizer transmission mechanism 30 Engine cover 31 Pilot seat 32 Front cover 33 Work monitor Device 33a Traveling distance display section 33b Planting area notification section 34 Handle 35 Floor step 36 Rear step 37 Rotor cover 37a Rotating fulcrum 38 Preliminary seedling stage 39 Lever guide hole 40 Upper link 41 Lower link 42 Link base frame 43 Vertical link 44 Connecting shaft 46 Elevating hydraulic cylinder 47 Fertilization guide 48 Groove body 50 Transmission case 51 Seedling stand 51a Seedling outlet 51b Seedling feeding belt 51c Seedling stopper mounting part 52 Seedling planting device 54 Planting stand 55 Center float 56 Side float 57 Middle float 58 Blower 58a Blower air guide 58a 'Air inlet 59 Air chamber 60 Fertilizer hopper 61 Feeding part 62 Fertilization hose 63 Electric motor 65 Seedling planting part support frame 65a Support roller 65b Seedling bed support frame 81 Horizontal frame 81a Rail part Minute 82 Horizontally moving rod 83 Connecting member 84 Drive roller 85 Driven roller 86 Seedling feed drive shaft 87 Ratchet mechanism 88 Lead cam 88a Lead cam shaft 88b Seedling feed cam 89 Relay shaft 90 Driven side arm 91, 92 Arm 93 Link 94 Link mechanism 95 Swing Support shaft 97 Stopper 99 Drug spreader 100 Control device 100a Traveling distance measurement means 100b Planting area calculation means 100c Seedling planting area correction means 101 Seedling stopper 120, 121 Left and right movement guide member 121a Portal-shaped cross-sectional shape part 121b Cross-sectional shape portion 124 Slider 124a Protrusion 124b Main sliding surface 124c Corner portion 125 Supply path 126 Lubricating oil tank 127 Discharge pump 129 Near infrared sensor 130 Lead cam bearing plate 131 Rake mounting plate 132 Rake 141 During HST Stand / four-wheel brake pedal 141b Rotating shaft 141a Brake pedal arm 143 Shifting operation arm 144 Shifting rod 145 Cylindrical body 147a First mounting piece 147b Second mounting piece 148 HST rod 160 HST neutral cam 160a Protrusion 160b Rotating shaft 161 Rod 162 Shifting lever fixing cam 162a Long hole 162b Rotating shaft 162c Circular groove 164 Rod 165 Position roller

Claims (2)

Traveling vehicle body (2),
Seedling planting part (4),
Travel distance measuring means (100a) for measuring the travel distance of the traveling vehicle body (2);
Planting area calculating means (100b) for calculating a planting area based on measurement of the travel distance by the travel distance measuring means (100a);
A partial non-planting means (19) for setting only a part of the planting strip of the seedling planting part into a non-planting state;
A seedling transplanting machine provided with seedling planting area correcting means (100c) for correcting the seedling planting area based on the operation of the partial non-planting means (19). Seedling planting area correction degree changing means (24) for changing the correction degree of the seedling planting area based on the partial non-planting means (19)
The seedling transplanter according to claim 1, wherein the seedling transplanter is provided.

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