Transplanter

Abstract

To provide a transplanter in which a rotor marker 26 detached from a planting work device 6 side is stably mounted on a work step part 7c which covers a rear wheel 1b and has a wide width, and can be quickly fixed and attached by attachment means 35, the transplanter capable of traveling on a road with a storage posture not been disturbed.SOLUTION: A transplanter has a configuration in which a rotor marker 26, in a planarly mounted state on a work step part 7c formed on a floor step 7 of a steering part 4, is detachably fixedly attached to the work step part 7c side by attachment means 35.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a transplanter in which a rotating marker is stored in a work step section. [Background technology]

[0002] Conventionally, there is already known a transplanter in which a rotating marker (line-drawing marker) with multiple protruding lugs is attached to a planting work device connected to a traveling body so that it can be raised and lowered, and the rotating marker is removed from a working position (line-drawing position) in which the marker traces that serve as a travel guide are formed on the field surface via an arm attachment section and a support arm, and the rotating marker is attached along the side of the seedling loading platform (seedling loading section) in a storage position, and the transplanter is stored in a barn or the like (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-73052 Summary of the Invention [Problem to be solved by the invention]

[0004] The marker device shown in Patent Document 1 above has a holding arm that supports the rotating marker removed from the support arm and inserts it into an arm support bracket attached to the left and right front parts of the seedling carrier table of the planting work device, and a fixing spring that fixes the spokes of the rotating marker.This has the advantage that the rotating marker can be stored without protruding significantly outward from the side of the seedling carrier table. However, the rotating marker, which is stored and supported above the side of the seedling carrier via a crank-shaped holding arm, is supported in a cantilevered manner on the side of the seedling carrier and protrudes significantly toward the upper rear, so there is a problem that it vibrates violently and greatly when traveling long distances on a road from the field to the barn in this stored position. Therefore, in order to withstand severe vibrations in a cantilevered state and provide stable cantilever support while suppressing resonance, each mounting part must be made of a rigid structure with sufficient strength, and in order to facilitate the attachment and removal of the rotating marker, a fixed spring mechanism with excellent strength and structure for vibration prevention is required, which results in problems such as a complicated structure and components that are costly. [Means for solving the problem]

[0005] The transplanter of the present invention for solving the above problems comprises: First, in the transplanter 1, a planting work device 6 having a marker device 10 that projects laterally and draws lines on a field scene is connected to the rear of a traveling body 2 having front wheels 1a and rear wheels 1b so as to be able to rise and fall freely, and a rotating marker 26 is detached from the arm attachment part 17 side of the marker device 10 and can be freely stored on the body side. A horizontal work step section 7c having a height and width covering the upper part of the rear wheel 1b is formed on the floor step 7 installed on the control floor 4c of the control section 4 configured on the running body 2, and the work step section 7c is configured to have a width and length that allows the rotating body marker 26 to be placed on the plane, and the rotating body marker 26 placed on the work step section 7c on the plane is removably attached and fixed to the work step section 7c side by an attachment means 35 provided facing the work step section 7c side. Secondly, it is characterized in that the attachment means 35 for detachably attaching and supporting the rotating body marker 26 is provided on the lower side of the work step 35. Thirdly, the mounting means 35 provided on the lower side of the work step portion 7c is attached and fixed to the work step portion 7c by a fixing structure that engages and fixes the marker support rod 27 of the rotating body marker 26 in a freely detachable manner. Fourthly, at least the outer portion of the work step portion 7c is made into a perforated plate portion 36 of a lattice-shaped frame structure on which the rotating body marker 26 can be placed, and an attachment means 35 is provided for attaching and fixing the rotating body marker 26 placed on the lower side of the perforated plate portion 36. Effect of the Invention

[0006] According to the invention of claim 1, in a transplanter 1 in which a planting work device 6 having a marker device 10 that projects laterally and draws lines on a field scene is connected to the rear of a traveling body 2 having front wheels 1a and rear wheels 1b so as to be freely raised and lowered, and a rotating marker 26 is detached from the arm attachment part 17 side of the marker device 10 and can be freely stored on the machine body side, a horizontal work step part 7c having a height and width that covers the upper part of the rear rear wheel 1b is formed on a floor step 7 installed on the operation floor 4c of the operation part 4 configured on the traveling body 2, the work step part 7c is configured to have a width and length that allow the rotating marker 26 to be placed on the plane, and the rotating marker 26 placed on the work step part 7c on the plane is detachably attached and fixed to the work step part 7c side by an attachment means 35 provided facing the work step part 7c side, The rotating body marker 26 removed from the arm attachment portion 17 side of the planting work device 6 can be placed stably in a flat storage position on the wide work step 35 located in front of the planting work device 6, and can be quickly and easily attached and fixed by the attachment means 35 provided on the work step portion 7c side, while allowing smooth driving on the road without disturbing the storage position. In addition, the rotating body marker 26 is placed flat on the wide work step section 7c at a height covering the upper part of the rear wheel 1b, and is attached and fixed thereto, and can be placed in a storage position that does not protrude significantly beyond the width of the aircraft or take up much space above. According to the invention of claim 2, by providing an attachment means 35 for detachably attaching and supporting the rotating body marker 26 on the lower side of the work step portion 7c, The components of the mounting means 35 can be installed in the lower space formed below with a simple and inexpensive structure without protruding significantly upward from the work step portion 7b, and the installation and operation of the mounting support portion 37 can be performed easily and smoothly through the wide lower space. According to the invention of claim 3, the mounting means 35 provided on the lower side of the work step portion 7c is attached and fixed to the work step portion 7c by a fixing structure that detachably engages and fixes the marker support rod 27 of the rotating body marker 26, This eliminates the troublesome task of directly gripping the rotating body marker 26 with the mud adhering thereto without deliberately removing it from the marker support rod 27 and fixing it in a dirty state, and enables the work of removing, attaching and storing the rotating body marker 26 to be performed in a simple and neat manner. According to the invention of claim 4, at least the outer portion of the work step portion 7c is made into a rigid structure of a perforated plate portion 36 on which the rotating body marker 26 can be placed, and a mounting means 35 is provided for mounting and fixing the rotating body marker 26 placed on the lower side of the perforated plate portion 36. The perforated plate portion 36 of the lattice frame not only prevents the worker's shoes from slipping, but also facilitates the discharge of mud from the rotating marker 26 and mud and rainwater adhering to agricultural materials, and the mounting means 35 can be installed simply, cheaply, and easily handled by utilizing the structure of the rigid perforated plate portion 36. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a left overall side view of a transplanter equipped with a rotating marker storage structure according to the present invention. [Diagram 2] FIG. 2 is a front view showing the configuration of the planting work device and the marker device. [Diagram 3] FIG. 2 is an overall perspective view showing a configuration in which a fertilizer tank unit is installed in a transplanter. [Figure 4] FIG. 2 is a front view showing the configuration and operation of the marker device. [Diagram 5] FIG. 2 is a perspective view showing the configuration of an arm and a holding mechanism of the marker device. [Figure 6] A partial oblique view showing the storage structure of the left rotating marker in the first embodiment of the present invention. [Figure 7] 7 is a perspective view showing an aspect in which a rotating body marker is placed and fixed on the perforated plate portion side of FIG. 6. FIG. [Figure 8] 1 is a side view showing the storage posture of a rotating marker according to a first embodiment of the present invention. FIG. [Figure 9] A side view showing the storage posture of the mounting means and rotating marker in the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] An embodiment of the present invention will be described with reference to the drawings. In Fig. 1 and Fig. 2, reference numeral 1 denotes a transplanter exemplifying a riding type rice transplanter, and an engine is mounted on the front of a traveling body 2 having front wheels 1a and rear wheels 1b on the left and right, and is covered with a bonnet 3. At the rear, an operating section 4 is installed, which includes a handle 4a of an operating panel section, a seat 4b, and an operating floor 4c laid between the two at the feet. On the left and right of the operating step 4c, floor steps 7 related to the present invention are provided with a configuration described later.

[0009] The traveling body 2 is equipped with a planting device 6 that can be freely attached, detached, and raised and lowered via a three-point linkage type lifting mechanism 5 provided at the rear of the body. The planting device 6 has a similar structure to conventional devices, and while a seedling carrier 8 on which mat seedlings are placed in parallel on the left and right sides is moved back and forth from side to side in an inclined position with the front high and the rear low, the seedlings can be scraped off the apron 8a of the seedling carrier 8 by the planting claws 9 and planted on the field surface (rice field surface). Marking devices 10 according to the present invention are arranged symmetrically on the left and right sides of the planting work device 6, and are configured to perform marking work to leave marker tracks (planting travel trajectory) on the unplanted side of the rice field, which is the next planting process.

[0010] The planting work device 6 has a horizontal planting section frame 11 to which a number of planting claw transmission cases 12, each having a planting claw unit 9a that rotates and drives the planting claws 9, are attached at a predetermined interval, and a sled-shaped float 13 is provided at the bottom of each planting claw transmission case 12 via a support link mechanism. The seedling carrier 8 is supported so that it can slide freely with its lower rear end (rear end) placed on an apron 8a attached along the planting section frame 11 and its upper front side placed on a slide support part 8b, and the lower part of the back side is connected to a seedling carrier drive part 15 installed on the planting claw transmission case 12 side, allowing the seedling carrier 8 to be driven back and forth horizontally. The slide support part 8b is provided horizontally on the upper part of a vertical frame 11a that stands upright from the planting section frame 11.

[0011] The transmission structure of the planting work device 6 is such that power is transmitted from the rear of the traveling body 2 to the input shaft 16a via the PTO transmission shaft 16, and from the input shaft 16a to each planting claw transmission case 12 and the seedling carrier drive unit 15 via an input conversion transmission case not shown. The planting work device 6 thus drives the seedling carrier 8 back and forth in a lateral direction to feed the seedlings, while the planting claws 9 scrape the seedlings from the apron 8a of the seedling carrier 8 and plant them in the rice field surface.

[0012] When the transplanter 1 travels back and forth within the field to perform planting work, one of the marker devices 10 facing the unplanted side of the field is switched to a working position (line-drawing working position) in which a marker mark is left on the field soil surface such as the rice field surface to draw a line, and the other marker device 10 is lifted upward and rotated via the arm attachment portion 17 and arm 19 described below, and switched away from the rice field surface to a non-line-drawing working position, thereby continuously performing reciprocating marker work.

[0013] Next, the marker device 10 will be described with reference to Figures 1, 2, 4, and 5. The right marker device 10 is composed of arm attachment parts 17 formed on the left and right ends of the planting frame 11, a marker arm (hereinafter simply referred to as arm) 19 rotatably supported on the arm attachment part 17 via a mounting shaft 18 in the front-rear direction, and a marker part 20 attached to the tip side of the arm attachment part 17 so as to be detachable and replaceable. In addition, the arm 19 in the embodiment includes a base arm 19a made of a large diameter pipe journaled on the arm mounting portion 17, and a tip arm 19b made of a small diameter pipe fixed integrally to the tip of the base arm 19a, and the marker portion 20 of each of the various embodiments is removably attached to the tip side of the tip arm 19b via a holding mechanism 30 configured as described later.

[0014] As shown in Figure 4, the arm mounting portion 17 of the marker device 10 is attached to a plate-shaped bracket 21 attached to the front end of the planting frame 11 by inserting an arm bracket 22 integrally formed on the base arm 19a into the mounting shaft 18 so as to be freely rotatable, and the arm bracket 22 is connected to the planting frame 11 by a spring 23 for maintaining posture. As a result, the arm 19 can be rotated between a working position shown by solid lines in Figure 3 and a storage position in which the arm 19 is raised approximately vertically as shown by dotted lines and the rotating body marker 26 is in a sideways position in an approximately horizontal position, and the pulling direction of the spring 23 can be switched between one side of the mounting shaft 18 and the other side, allowing the arm 19 to be maintained in either the working position or the storage position.

[0015] The position of the marker device 10 can be changed by pushing and pulling the wire by operating a lever (not shown) from the control unit 4, or by automatic switching by an actuator such as a motor based on the switching operation of switches. When traveling on the road, the middle part of the arm 19 in the storage position is releasably engaged and fixed by a support 25 protruding from an appropriate position of the frame member on the vertical frame 11a side of the planting unit frame 11.

[0016] Next, the marker unit 20 of the embodiment will be described with reference to Figures 1, 2, 4, and 5. The marker unit 20 is composed of a rotating marker 26 that comes into contact with the paddy field surface to form a marker mark, a marker support rod 27 that supports the rotating marker 26 by attaching it to the arm 19, and the like. The marker support rod 27 is crank-shaped, and has a straight rod portion 27a that extends vertically, an inward-facing mounting rod portion 27b at its upper portion which is inserted and supported within the tip arm 19b, and a horizontal rod portion 27c at its lower portion which has a support width and supports the rotating marker 26 in a cantilever-like manner so as to allow it to rotate freely.

[0017] As shown in Figures 1, 2, 4 and 7, the rotating body marker 26 of the marker part 20 is manufactured in a windmill-shaped design having a boss portion 28 that is rotatably inserted into the horizontal rod portion 27c, a number of spoke portions 28a extending radially from the boss portion 28, a ring portion 28c that is supported by the spoke portions 28a and has a number of spatula-shaped claw protrusions 28b protruding from its outer periphery, and a number of lightening holes that are formed when the synthetic resin is formed, similar to conventional rotating body markers.

[0018] As a result, when the marker unit 20 is placed in a working position with the marker support rod 27 attached to the holding mechanism 30 formed on the tip arm 19b, the rotating marker 26 can be faced to the marker position on the rice field surface from the planting work device 6, and as it rotates in contact with the ground as it travels, the soil is sequentially raked up by each claw protrusion 28b, forming a dotted marker mark (marker line). In the embodiment, the rotating body marker 26 has a boss portion 28 formed at the center of the windmill-shaped design that is inserted freely into the horizontal rod portion 27c, and is positioned and supported by a locking member (not shown) that is freely attached to the axial end of the horizontal rod portion 27c in a detachable manner. With this configuration, when the locking member is released, the rotating body marker 26 can be slid outward from the horizontal rod portion 27c and pulled out, and the removed rotating body marker 26 can be stored on the work step portion 7c side in a manner described below.

[0019] As shown in FIG. 4, the holding mechanism 30 includes a mounting member 31 having an L-shaped cross section in a side view fixed to the front end surface of the tip arm 19b so as to form an engagement margin with the mounting rod portion 27b, and an elastic member (mounting spring) 32 is attached by inserting it into the mounting member 31 and the tip arm 19b. The elastic member 32 has a coil portion 32a formed on the base side inserted into the mounting member 31 and the tip arm 19b, and the coil end is bolted to a mounting piece 31a protruding upward on the base side of the mounting member 31, and a hook portion 32b is formed by bending the other end of the extended coil into an inward loop shape. The tip of the mounting member 31 is provided with a groove-shaped engagement portion 31b that engages with the straight rod portion 27a of the marker support rod 27 to be inserted.

[0020] The holding mechanism 30 thus formed is positioned in the posture shown by the solid line in Figure 4 with the elastic member 32 attached to the mounting piece 31, with the mounting rod portion 27b of the marker support rod 27 inserted into the tip arm 19b and the straight rod portion 27a engaged with the engagement portion 31b as shown by the dotted line. Next, while rotating the hook portion 32b of the elastic member 32 in the direction of the arrow against the spring force, the hook portion 32b is engaged with the straight rod portion 27a. With the mounting rod portion 27b inserted into the tip arm 19b, the straight rod portion 27a is pressed against the engagement portion 31b by the biasing force of the elastic member 32, and at the same time, it is pressed against the end face of the tip arm 19b by the inward biasing force of the hook portion 32b, and is held in place to prevent it from coming loose.

[0021] In the marker working posture, when the marker support rod 27, which is biased downward by the elastic member 32, touches the ground surface with a sweepback angle, the rotating body marker 26 can touch the ground below and behind the arm 19 in a side view, forming a marker mark. Furthermore, when removing the marker portion 20 from the arm 19, the above-mentioned operations are performed in reverse order to disengage the hook portion 32b of the elastic member 32 from the straight rod portion 27a, freeing the marker support rod 27, and the mounting rod portion 27b can be pulled out sideways. The marker unit 20 removed from the holding mechanism 30 can be placed in a stored position on the work step unit 7c side in the manner shown in FIG. 7, which will be described later.

[0022] Next, the floor steps 7 formed in a symmetrical shape on the left and right of the operation floor 4c according to the present invention and the mounting means 35 for the rotating body marker 26 provided on the floor steps 7 will be described with reference to Figs. The illustrated floor step 7 is composed of a walking step section 7a laid out substantially horizontally from the front of the traveling body 2 on both sides of the bonnet 3 and the steering floor 4c, a staircase section 7b connected to the walking step section 7a and rising up like a rearward inclined surface so as to cover the front of the rear wheel 1b, and a working step section 7c connected to the staircase section 7b and formed wide to cover the upper part of the rear wheel 1b up to a rear position. At the outermost position of the working step section 7c, a mounting means 35 (FIG. 8) is provided by a structure described later for positioning and fixing the rotating body marker 26 placed flat on the working step section 7c in a stored posture.

[0023] As shown in FIG. 3, the floor step 7 is configured as a continuous unit of approximately equal width from the front walking step section 7a side, and is connected to the outer part of the working step section 7c, which is in a horizontal position at a height sufficient to cover the rear wheel 1b, by connecting a perforated plate section 36 made of a rigid lattice frame structure having a large number of square holes to the outer part of the working step section 7c, so as to cover the upper outside of the rear wheel 1b in as wide a shape as possible. The perforated plate portion 36 in the illustrated example has front and rear corners of the outer side of the frame cut out, and an inverted U-shaped support post 7d is erected on the linear outer side formed between the two.

[0024] This support 7d can be used from the walking step section 7a side as a handle for the worker when supplying materials such as seedling supply and fertilization work and performing various maintenance work.It also makes it easier to place work materials such as seedling boxes and fertilizer bags that are temporarily placed on the work step section 7c, and also serves as a guard member to prevent the placed items from moving outward. The perforated plate portion 36 of the lattice frame structure not only prevents the shoes of the worker from slipping when placed on it, but also prevents slipping when seedling boxes or agricultural materials with mud on them are placed on it, and has the excellent function of quickly draining mud and rainwater, which has the advantage of quickly draining mud and water that falls when the car is vigorously washed with a water hose just before being stored in a barn with the mud still attached.

[0025] In the above configuration, a marker mounting portion is formed on the rear side of the perforated plate portion 36, on which the rotating body marker 26 removed from the marker device 10 can be placed in a flat manner, and the marker mounting portion of the perforated plate portion 36 is configured with a width and shape such that when the rotating body marker 26 is placed on it, its outer periphery does not protrude significantly from the perforated plate portion 36. In addition, the work step portion 7c in the embodiment has a structure in which a lattice-shaped perforated plate portion 36 is connected to the outside of a punched iron plate-like step, but in addition to forming the entire surface of the work step portion 7c with the perforated plate portion 36, it can also be formed in a continuous manner using a protruding plate member having drainage holes similar to those of the walking step portion 7a.

[0026] Next, the mounting means 35 will be described with reference to Figures 6 to 8. The mounting means 35 in the illustrated example is composed of a mounting support part 37 that detachably engages a member near the rotating body marker 26 on the marker placement part side of the work step part 7c, and a support part 38 that positions and supports the marker support rod 27 side on the front side of the mounting support part 37. Furthermore, the mounting support portion 37 shown in Figures 7 and 8 is composed of a mounting rod 40 serving as a stopper having a hook portion 40a that can be freely engaged and detached with the marker support rod 27, and a support member 42 that attaches the mounting rod 40 via a bolt (knob bolt) 41 so that it can slide vertically.

[0027] The vertical adjustment structure of the mounting support portion 37 has an adjustment hole 42a formed in the support member 42 as a long hole extending in the vertical direction, and a guide pin 40b and a bolt 41 are provided in the mounting rod 40 with a vertical gap between them. With the guide pin 40a and bolt 41 inserted into the adjustment hole 42a, the mounting rod 40 can be slid in the vertical direction relative to the support member 42 via the adjustment hole 42a and its position can be adjusted to any desired position. In other words, in the embodiment, in the normal working position (Figure 6) where the rotating body marker 26 is not placed and fixed, the marker support rod 27 is not engaged with the hook portion 40a of the mounting rod 40, so that the mounting rod 40 can be moved downward to the lowest position through the adjustment hole 42a by operating the bolt 41, and positioned so that the upper part of the hook portion 40a does not protrude upward from the lattice member of the perforated plate portion 36.

[0028] On the other hand, the support portion 38 has upper and lower plate pieces which are U-shaped when viewed from the side, and support holes 38a are formed in the upper and lower plate pieces which allow the mounting rod portion 27b to be inserted and removed in a downward position, and are fixed to the inside of the outer frame of the perforated plate portion 36 so that they do not protrude from the upper surface of the perforated plate portion 36. In this way, the mounting support portion 37 and the support portion 38 are constructed utilizing the unique structure of the work step portion 7c, such as the hole structure and frame structure of the lattice member of the perforated plate portion 36 and the large space formed below these, thereby enabling the rotating body marker 26 to be removed and attached smoothly with a rational structure. That is, by utilizing the components of the perforated plate portion 36, the parts of the mounting support portion 37 and the support portion 38 do not protrude significantly from the surface of the perforated plate portion 36, and instead utilize the lower space formed below the perforated plate portion 36, making it possible to manufacture them with a simple and inexpensive structure. This has the advantage that the mounting support portion 37 can be easily and smoothly operated via the wide lower space of the work step portion 7c, even when the worker is standing on the muddy rice field surface. Furthermore, as shown in the illustrated example, the hook portion 40a does not protrude from the perforated plate portion 36 when not in use, which has the advantage that it does not interfere with walking or the placement of objects.

[0029] Next, the manner of use of the floor step 7, working step portion 7c, and mounting means 35 for the rotating body marker 26 configured as above will be described with reference to FIG. 3 and FIGS. 6 to 8. FIG. When the transplanter 1 is stored in a barn after completing a normal transplanting operation, the transplanter 1 often needs to travel a long distance. The transplanter 1 of the present invention is designed so that the marker portion 20 of the unit body detached from the distal arm 19b can be placed in a predetermined position on the work step portion 7c, enabling efficient storage work to be performed using a stable flat loading method.

[0030] In other words, the marker section 20 can be stored in advance by manipulating the bolt 41 of the mounting support section 37, and positioning and fixing the hook section 40a side of the mounting rod 40 at a predetermined engagement height position from the upper surface of the perforated plate section 36. In this case, the rotating marker 26 of the marker section 20 is temporarily placed on the perforated plate section 36 on the rear side of the work step section 7c, and the mounting rod section 27b of the marker support rod 27 is inserted from above into the support hole 38a of the support section 38 to establish an axial support state. As a result, the marker support rod 27, which is supported by the support portion 38 so as to be freely rotatable in the left and right directions, holds the rotating body marker 26 in an approximately horizontal position via the support hole 38a and is supported so as to be rotatable around the mounting rod portion 27b.

[0031] Next, the straight rod portion 27a can be easily and reliably engaged with the hook portion 40a of the mounting rod 40, which protrudes from the upper surface of the perforated plate portion 36 so as to be easily visible, using the mounting rod portion 27b, which is supported by the support portion 38, as a fulcrum. Next, the bolt 41 is loosened and the mounting rod 40 is operated downward so that the straight rod portion 27a is pressed against the lower perforated plate portion 36 via the hook portion 40a, and the bolt 41 is tightened to position it. This allows the marker portion 20 to be reliably, quickly and stably fixed at the front and rear sides of the straight rod portion 27a to the perforated plate portion 36 by the support portion 38 and the mounting support portion 37.

[0032] The support portion 38 provided at the front position of the perforated plate portion 36 supports the mounting rod portion 27b which extends downward from the straight rod portion 27a, and thereby supports the rotating body marker 26 in a raised position which restricts direct contact between the rotating body marker 26 and the perforated plate portion 36 with the straight rod portion 27a in abutment against the perforated plate portion 36. Therefore, direct contact between the rotating marker 26 and the perforated plate portion 36 can be suppressed, which has the advantage of allowing the storage posture to be one in which damage and contact noise associated with direct contact between the two is suppressed.

[0033] Furthermore, when the rotating body marker 26 is placed flat on the perforated plate portion 36 of the work step portion 7c, it can be quickly attached and fixed flat without protruding significantly outward or upward or becoming bulky. On the other hand, the removal work of the rotating body marker 26 can be performed simply and quickly by performing the above steps in reverse, and the mounting means 35 provided on the lower side of the work step portion 7c is attached and fixed to the work step portion 7c by a fixing structure that engages and fixes the marker support rod 27 of the rotating body marker 26 in a freely detachable manner, thereby eliminating the hassle of having to deliberately remove the rotating body marker 26, which is prone to adhesion of mud, from the marker support rod 27 and then directly grasp the removed rotating body marker 26 to install and fix it while it is still dirty, and the removal, installation and storage work of the rotating body marker 26 can be performed in a simple and clean manner.

[0034] Furthermore, when the rotating body marker 26 is placed flat on the perforated plate portion 36 of the work step portion 7c, it is possible to mount and fix the rotating body marker 26 flat without protruding significantly outward or upward. Furthermore, the rotating marker 26, which is placed and fixed flat on the work step portion 7c, is not subject to significant shaking or vibration during travel, and can be placed outward at the rear of the wide work step portion 7c. Therefore, as shown in Figure 3, in the case of a transplanter 1 in which the fertilizer tank section 6a of the fertilizer applicator is mounted on the rear of the control section 4, when performing fertilizer supply work or maintenance work on the fertilizer supply section, fertilizer section, and planting work device 6, the operator can easily perform the necessary work by placing his / her foot on the empty space on the inside side of the work step section 7c of the machine without stepping on the rotating body marker 26.In addition, even if the planting work device 6 is an 8-row planting type, for example, seedling supply work to the seedling carrier 8 on the outside can also be performed smoothly.

[0035] Next, another embodiment of the mounting means 35 will be described with reference to Fig. 9. Note that the description of the same structure and effects as those of the first embodiment will be omitted. The mounting means 35 in the illustrated example has at least the outer portion of the work step portion 7c as a perforated plate portion 36 of a lattice-like rigid structure on which the rotating body marker 26 is placed, preventing the worker's shoes from slipping and improving the drop and discharge of the rotating body marker 26 with mud attached, as well as mud and rainwater attached to agricultural materials, and utilizing this rigid structural member to provide the mounting support portion 37 and support portion 38 with a simple and inexpensive configuration.

[0036] The mounting support portion 37 has a guide pin 42a protruding laterally from the lower side of a support member 42 whose upper part is fixed to the perforated plate portion 36, capable of engaging a coil-shaped spring 45, and the mounting rod 40 has a long guide hole 40b drilled into its lower side into which the guide pin 42a can slide, and an operating pin 40c, capable of engaging the upper part of the spring 45, protruding above the guide hole 40b with a predetermined operating length. In other words, when the mounting support portion 37 of the above configuration is in the normal working position in which the rotating body marker 26 is not placed and fixed, the marker support rod 27 is not engaged with the hook portion 40a of the mounting rod 40, so that the mounting rod 40 moves downward to the lowest position through the positioning abutment between the elongated adjustment hole 40b and the guide pin 42a due to the tensile force of the spring 45, and the upper part of the hook portion 40a can be positioned so that it does not protrude above the perforated plate portion 36.

[0037] On the other hand, similar to the first embodiment, the support portion 38 supports the mounting rod portion 27b so that it does not protrude from the upper surface of the perforated plate portion 36 by being configured to allow the mounting rod portion 27b to be inserted and removed in a downward position on upper and lower plate pieces that are U-shaped when viewed from the side. During normal operation when the rotating body marker 26 is not placed on the mounting means 35 configured as described above, the mounting rod 40 is held in a standby position by the return force of the spring 45 and the contact between the adjustment hole 40b and the support pin 46, in a position where the hook portion 40a does not protrude significantly from the plate surface of the perforated plate portion 36 and can be seen from above the lattice hole. When placing and fixing the rotating body marker 26, first, the mounting rod portion 27b of the marker support rod 27 is inserted from above into the support portion 38 to place it in a supported state, and then the rotating body marker 26 is placed in a predetermined position on the perforated plate portion 36. Then, the hook portion 40a is pinched and pulled upward against the biasing force of the spring 45, or the operating pin 40c side is pinched and raised upward, causing the hook portion 40a to protrude above the perforated plate portion 36.

[0038] Next, the marker support rod 27 is rotated horizontally in a plane around the support portion 38 as a fulcrum and engaged with the hook portion 40a, and then the hand is released from the hook portion 40a or the operating pin 40c, causing the hook portion 40a to press the marker support rod 27 against the perforated plate portion 36 by the force of the spring 45, thereby automatically and labor-savingly fixing the placed rotating body marker 26. Therefore, with this mounting means 35, when the mounting support portion 37 holds the rotating body marker 26 in the normal working position, the marker support rod 27 is not engaged with the hook portion 40a of the mounting rod 40, and the mounting rod 40 naturally moves downward to the lowest position through the adjustment hole 40b due to the return force of the coil spring 45, and the upper portion of the hook portion 40a does not protrude upward from the lattice member of the perforated plate portion 36.This has the advantage that the worker can efficiently use the perforated plate portion 36, eliminating the need for confirmation operations such as changing the position of the mounting rod 40 or checking whether the hook portion 40a protrudes or not.

[0039] In the embodiment, the mounting means 35 is a method of mounting and fixing the rotating body marker 26 to the marker support rod 27 via the mechanical mounting support portion 37. However, for example, the rotating body marker 26 alone removed from the marker support rod 27 may be placed directly on the working step portion 7c, and may be mounted and fixed by a position-switchable hook member or a rubber or string-like band member provided on the working step portion 7c. [Explanation of symbols]

[0040] 1 Rice transplanter 1b rear wheel 2 Running body 4. Control Unit 4c Pilot Floor 6 Planting equipment 7. Floating Steps 7c Work step section 10 Marker device 17 Arm attachment part 19 Marker Arm (Arm) 20 Marker section 26 Rotating Marker 27 Marker support rod 35 Mounting means 36 Perforated plate part 37 Mounting support 38 Support part

Claims

1. A transplanter in which a planting work device (6) having a marker device (10) that projects laterally and draws lines on a field is connected to the rear of a traveling body (2) having front wheels (1a) and rear wheels (1b) so as to be freely raised and lowered, and a rotating marker (26) is detached from an arm attachment part (17) side of the marker device (10) and can be freely stored on the body side, The floor step (7) installed on the control floor (4c) of the control section (4) configured on the traveling body (2) is provided with a horizontal work step section (7c) having a height and width sufficient to cover the upper part of the rear wheel (1b), and the work step section (7c) is configured with a width and length sufficient to allow the rotating body marker (26) to be placed flatly on the work step section (7c), and the rotating body marker (26) placed flatly on the work step section (7c) is removably attached and fixed to the work step section (7c) by an attachment means (35) provided facing the work step section (7c).

2. 2. A transplanter according to claim 1, further comprising a mounting means (35) for detachably mounting and supporting a rotating marker (26) on the lower side of said working step (35).

3. A transplanter as described in claim 1 or 2, wherein the mounting means (35) provided on the lower side of the work step portion (7c) is attached and fixed to the work step portion (7c) by a fixing structure that engages and fixes the marker support rod (27) of the rotating body marker (26) in a freely detachable manner.

4. A transplanter as described in claim 1, 2 or 3, wherein at least the outer portion of the work step portion (7c) is made into a perforated plate portion (36) of a lattice-shaped frame structure on which a rotating body marker (26) can be placed, and an attachment means (35) is provided for attaching and fixing the rotating body marker (26) placed on the lower side of the perforated plate portion (36).

Images