JP5664596B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to a seedling transplanting machine for planting seedlings in a field.

  The seedling transplanter has a traveling vehicle body equipped with an engine as a power source and a power transmission mechanism such as a main transmission and a sub-transmission, and a seedling transplanting device attached to the rear part of the traveling vehicle body. This type of seedling transplanter is disclosed in, for example, Patent Documents 1 and 2 below.

  The seedling transplanter of Patent Document 1 has a switching operation unit that can be switched between a deployment configuration in which two preliminary seedling platforms are arranged in the longitudinal direction of the body and a stacked configuration in which the two preliminary seedling platforms are aligned in the vertical direction of the aircraft. A movable spare seedling frame is provided. The switching operation unit includes a link mechanism that enables switching between the unfolded form and the laminated form, and an operation grip disposed on the outer side of the body on the rear side of the spare seedling platform located in the upper stage when the laminated form is adopted. Prepare. In this movable spare seedling frame, the operator on the traveling vehicle body operates the operation grip to switch between the deployed form and the laminated form.

  In the seedling transplanter of Patent Document 2, a front operation handle is provided at the lower part of the front end of the traveling vehicle body. The front operation handle is an operation unit that is used when climbing over slopes and ridges such as farm entrances and exits, and when the operator in front of the machine gets over, it turns by moving it forward and below the machine. It suppresses the lifting of the car body. In addition, the seedling transplanter is provided with a center marker serving as a guideline for straight traveling at the central portion above the front operation handle.

JP 2012-050355 A JP 2009-268437 A

  By the way, in the seedling transplanting machine of the above-mentioned patent document 1, since the operation grip is arranged on the rear side of the machine body of the preliminary seedling stage which is located in the upper stage in the stacked form and located in front of the machine body in the deployed form. When the seedling is loaded onto the spare seedling platform from the front of the machine body, it is difficult to perform the switching operation between the unfolded form and the stacked form in the movable spare seedling frame from the front of the machine body. As a result, in this conventional seedling transplanting machine, it is necessary for the operator to perform the switching operation of the movable spare seedling frame from the traveling vehicle body every time it is switched, resulting in a decrease in work efficiency and an increase in the labor of the worker. I will.

  Further, in the seedling transplanting machine of this Patent Document 1, since the operation grip is arranged on the outer side of the machine body from the spare seedling platform, the operator on the traveling vehicle body unfolds the movable spare seedling frame after loading the seedlings. When performing the switching operation from the stacking mode to the stacking mode, there is a possibility that the operator may accidentally grab the operation grip together with the seedling. In such a case, the seedling may be bent, bent, crushed, and the like, which may result in a decrease in yield and quality due to poor growth of the seedling. In addition, by grasping the seedling, the operator may take time and labor to wash his dirty hands. As a result, in this conventional seedling transplanting machine, the switching operation is performed with care so that the operator does not grasp the seedling, leading to a decrease in work efficiency and an increase in the labor of the worker.

  Further, in the seedling transplanting machine of Patent Document 1, there is no storage place for the seedling collecting plate for taking out the seedlings when loading the spare seedling placing table, so that the seedling collecting plate is placed on the traveling vehicle body. Yes. As a result, the seedling plate may fall from the traveling vehicle body due to wind or vibration of the aircraft, and this seedling transplanter has to pick up the dropped seedling plate by the operator, reducing the work efficiency. And increase the labor of workers. Furthermore, in this seedling transplanting machine, the seedling plate on the traveling vehicle body may generate noise due to vibration of the machine body, which may cause discomfort to the operator.

  Moreover, in the seedling transplanting machine of Patent Document 2, when the front operation handle is rotated toward the front side of the machine body and the lower side of the machine body, the center marker also falls down together. As a result, the operator in front of the machine body must operate the front operation handle in a posture avoiding the center marker, resulting in a decrease in work efficiency due to a decrease in operability and an increase in worker labor. . In addition, since the center marker, which is a long object, falls to the front of the aircraft, a large work space is required when the seedling transplanter is loaded onto a light truck or the like by operating the front operation handle or when it is lowered from the light truck. Therefore, there is a risk that work efficiency will be reduced.

  Accordingly, an object of the present invention is to provide a seedling transplanting machine that improves the inconvenience of the conventional example and improves the workability of a series of operations related to seedling planting operations.

In order to achieve the above object, according to the present invention, a seedling planting device (3) is provided at the rear portion of the traveling vehicle body (2), and a movable spare seedling frame is provided at the front portion of the traveling vehicle body (2). (81) is provided, and the movable preliminary seedling frame (81) includes a plurality of preliminary seedling platforms (81a, 81b) stacked in the vertical direction of the machine body and the plurality of preliminary seedling platforms (81a, 81b). There comprises a link mechanism (85) can be switched to the deployed configuration arranged on the body front-rear direction, front side of a laminated form or deployed configuration of the link mechanism (85) to said vehicle body (2) above, or the vehicle body (2) with the operating member (86a, 86b) for switching operation to said link mechanism (85) is provided with two link arms which are arranged side by side in the longitudinal fuselage direction (85a, 85b), airframe front side of the link arm (85a), upon said laminated form The movable preliminary seedling frame (81) is bent from the portion along the holding member (85d) fixed to the lower preliminary seedling platform (81b) and the portion along the holding member (85d), and the upper preliminary seedling platform (81a) is bent. and a fixed held by the holding member (85c) portions, before Symbol respective preliminary seedling stand when said laminated form (81a, 81b) of the space inboard side of the vehicle body front side in The link arm (85b) on the rear side of the fuselage, which is formed into a bent shape, has a portion along the holding member (85c) fixed to the upper preliminary seedling stand (81a) when the laminated form is adopted. before SL each spare when and a held portion fixed holding member (85d) said lower preliminary seedling stand bent from said along portion (81b), and the previous SL laminated form Machine on the rear side of the machine body on the seedling stand (81a, 81b) A seedling transplantation machine, characterized in that a bent shape to form a space to the side.

According to the second aspect of the present invention, when the movable preliminary seedling frame (81) is in the unfolded configuration, the portion held by the holding member (85c) of the link arm (85a) on the front side of the machine body is Along the holding member (85c), the link arm (85a) on the front side of the fuselage is bent downward from the portion held by the holding member (85c) to form a space on the lower side of the fuselage. The portion of the link arm (85b) held by the holding member (85d) extends along the holding member (85d), and the link arm (85b) on the rear side of the fuselage is above the portion held by the holding member (85d). The seedling transplanter (1) according to claim 1, characterized in that a space is formed on the upper side of the machine body by bending to a top .
According to a third aspect of the present invention, as the operation member (86a, 86b), the main operation member (86a) for switching the link mechanism (85) from the traveling vehicle body (2) to a stacked form or an unfolded form. And an auxiliary operation member (86b) that performs switching operation from the front side of the traveling vehicle body (2) to a laminated form or an unfolded form, and when the link mechanism (85) is in the laminated form, each link arm (85a) , 85b) . The seedling transplanter (1) according to claim 1 or 2, further comprising a rotation lock portion (88) for prohibiting the rotation operation .

According to a fourth aspect of the present invention, the link mechanism (85) is disposed on the inside of the machine body with respect to the preliminary seedling platform (81a, 81b) of the movable preliminary seedling frame (81), and the main mechanism The operating member (86a) is located on the front side of the machine body when in the unfolded configuration of each of the preliminary seedling platforms (81a, 81b) and on the rear side of the machine body that is the uppermost stage when in the stacked configuration. The auxiliary operation member (86b) is disposed between the link mechanism (85) and the auxiliary operation member (86b) is located on the front side of the machine body when in the unfolded configuration and is the uppermost stage when placed in the stacked configuration. The seedling transplanting machine (1) according to any one of claims 1 to 3, wherein the seedling transplanting machine (1) is arranged between a front body side of a stand (81a) and the link mechanism (85). is there.

According to the fifth aspect of the present invention, the main operation member (86a) and the auxiliary operation member (86b) are arranged before and after the preliminary seedling mounting base (81a, 81b) of the movable preliminary seedling frame (81). The spare seedling platform (81a, 81b) is provided with side walls (87) that prevent the seedling from falling in the left-right direction of the machine body on both sides in the left-right direction of the machine body. As for each of the preliminary seedling platforms (81a, 81b) arranged on the side of the main body of the main operating member (86a) and the auxiliary operating member (86b), the main body facing the main operating member (86a). The seedling transplanter (1) according to claim 4 , wherein the side wall (87) is provided except for a side part and a side part of the machine body facing the auxiliary operating member (86b).

The present invention according to claim 6 is characterized in that a plurality of preliminary seedling platforms (82a, 82b) are equidistantly arranged in the vertical direction of the machine body on the side opposite to the side where the movable spare seedling frame (81) is provided. Sorting fixed preliminary seedling frame having a fixed arrangement seedlings frame frame (89) and (82) in provided, the fixed preliminary seedling frame (82) is provided on the seedling frame frame (89), seedlings Toita ( P) a seedling plate support part composed of at least two support members (91a, 91b) for storing and holding, and the seedling plate (P) in the seedling frame (89) and the seedling plate support part The seedling transplanter (1) according to any one of claims 1 to 5, further comprising a buffer member (92, 93) provided at the contact portion and the proximity portion.

  According to a seventh aspect of the present invention, the fixed preliminary seedling frame (82) includes a base (95a) provided on an upper side of the body of the seedling frame (89) and a downward direction from the base (95a). A seedling plate support part (95) for storing and holding the seedling plate (P) with the protruding part (95b) protruded in this manner, according to any one of claims 1 to 5, It is a seedling transplanting machine (1) of description.

  According to the present invention of claim 8, the control device (60) includes a housing (74) disposed in a center part of the body in the left-right direction of the body and the fixed preliminary seedling frame (82) on the left and right of the body. A traveling operation section (62) disposed on the provided side and used for forward / reverse switching operation and traveling speed adjustment operation of the traveling vehicle body (2), the casing (74), and the movable spare seedling frame (81 The first power connection / disconnection operation part (63) used for connection / disconnection operation from above the traveling vehicle body (2) of the power connection / disconnection device disposed between the power source (20) and connection / disconnection of the power transmission of the power source (20). ), The casing (74) and the movable spare seedling frame (81), and used for connecting / disconnecting the power connecting / disconnecting device from the front of the traveling vehicle body (2). 2 The power connection / disconnection operation part (64) and the lower part of the casing (74) are arranged in front of the machine body, A vehicle body guide operation unit (65) for guiding the vehicle body (2) from the front of the traveling vehicle body (2) and the fixed spare seedling frames (82) on the left and right sides of the body of the vehicle body guide operation unit (65) are provided. 8. An emergency stop operation section (66) disposed on the other side for forcibly stopping all functions of the traveling vehicle body (2), and comprising any one of claims 1 to 7. It is a seedling transplanter (1) described in one.

  The present invention according to claim 9 is characterized in that the vehicle body guide operation part (65) has a loop-shaped grip and is arranged so as to be able to rotate in the longitudinal direction of the body with the lower part of the body of the grip as a fulcrum. A center marker (67) is provided between the vehicle body guide operation unit (65) and the housing (74) and at the center of the body in the left-right direction of the body, and projects as a guideline for straight traveling that projects upward from the body. The center marker (67) has a smaller forward rotation angle with respect to the vertical direction of the vehicle body than the vehicle body guide operation unit (65), and the vehicle body with respect to the vehicle body vertical direction than the vehicle body guide operation unit (65). The seedling transplanting machine (1) according to claim 8, wherein the seedling transplanting machine (1) is arranged so as to be pivotable in the longitudinal direction of the machine body with the lower part side of the machine body as a fulcrum so that the rearward rotation angle becomes large. .

  According to the tenth aspect of the present invention, the center marker (67) includes a pivot fulcrum (106) on the upper side of the fuselage with respect to the pivot fulcrum (105) of the vehicle body guide operation unit (65), and The seedling transplanter (1) according to claim 9, characterized in that the vehicle body guide operation part (65) cannot be rotated forward unless it is rotated forward.

  The present invention according to claim 11 is characterized in that the vehicle body guide operating portion (65) is configured to be rotatable to a position below a power transmission portion provided on a lower side of the traveling vehicle body (2). A seedling transplanter (1) according to claim 9 or 10.

  Since the present invention according to claim 1 has the movable spare seedling frame 81, the seedlings from the traveling vehicle body 2 to the preliminary seedling placement stands 81 a and 81 b can be obtained by stacking the preliminary seedling placement stands 81 a and 81 b. On the other hand, by unfolding the preliminary seedling platform 81a, 81b, the seedling loading operation to the preliminary seedling platform 81a, 81b from the front of the traveling vehicle body 2 becomes possible. Therefore, since seedlings can be loaded from above the traveling vehicle body 2 and from the front of the traveling vehicle body 2, work efficiency can be improved and the burden on the operator can be reduced.

Further, since the main operation member 86a for performing the switching operation from above the traveling vehicle body 2 and the auxiliary operation member 86b for performing the switching operation from the front of the traveling vehicle body 2 are provided. It is possible to switch between the stacked form and the deployed form of the movable spare seedling frame 81 also from the front of the traveling vehicle body 2, thereby improving the work efficiency and reducing the burden on the operator.
In addition, since the link arms 85a and 85b are bent and bent by the link arms 85a and 85b, seedlings can be taken in and out from the front or rear of the spare seedling platforms 81a and 81b. The work efficiency can be improved and the burden on the worker can be reduced.

(Delete)

  In addition to the effect of the invention described in claim 1 or 2, the present invention described in claim 3 includes a rotation lock portion 88. Therefore, even if the traveling vehicle body 2 is greatly shaken up and down due to unevenness in the field, etc. Unnecessary movement of the preliminary seedling stage 81a, such as the movable preliminary seedling frame 81 moving from the stacked form to the unfolded form without permission, can be avoided. Therefore, since the seedling placed on the preliminary seedling placing table 81a does not fall due to vibration or the like, the work of picking up the dropped seedling becomes unnecessary, and the work efficiency can be improved and the burden on the operator can be reduced.

In addition to the effect of the invention according to any one of claims 1 to 3 , the present invention described in claim 4 provides an operator's hand when performing a switching operation between the stacked form and the developed form. And a seedling on the preliminary seedling stage 81a can be provided with an interval. Therefore, since this seedling transplanting machine 1 can reduce the possibility of folding or crushing the seedling by the hand of the operator, the seedling can be loaded and unloaded without being distracted by the possibility. In addition, since the main operation member 86a and the auxiliary operation member 86b do not get in the way during loading and unloading, it is possible to improve the work efficiency and reduce the burden on the operator. In addition, since seedling growth defects and the like can be avoided, wasteful seedlings can be reduced.

According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the invention, the main operation member 86a and the auxiliary operation member 86b are arranged before and after the body of the preliminary seedling platforms 81a and 81b of the movable preliminary seedling frame 81. Since the main operation member 86a and the auxiliary operation member 86b are arranged so as to be within the range of the length in the direction, they do not obstruct the getting on and off of the worker from the side of the traveling vehicle body 2. Thereby, it is easy to get on and off from the side, and it is possible to improve the work efficiency and reduce the burden on the operator.

  Further, since the auxiliary operation member 86b does not protrude from the preliminary seedling platforms 81a and 81b to the front of the machine body, the auxiliary operation member 86b does not contact the wall or the like, and the durability of the auxiliary operation member 86b can be improved. it can.

  Further, by providing the side wall 87 excluding the side part of the machine body facing the main operation member 86a and the side part of the machine body facing the auxiliary operation member 86b, an operator having the main operation member 86a and the auxiliary operation member 86b can be provided. Since the hand is less likely to come into contact with the spare seedling stage 81a and the operability of the switching operation of the movable preliminary seedling frame 81 is improved, the work efficiency can be improved and the burden on the operator can be reduced.

In addition to the effect of the invention according to any one of claims 1 to 5, the present invention described in claim 6 has a fixed preliminary seedling frame 82 compared to the movable preliminary seedling frame 81. Since the movement of the spare seedling table 82a, 82b is strongly regulated, it is unlikely that the seedling placed on the preliminary seedling table 82a, 82b will fall due to vibrations, etc. The efficiency can be improved and the burden on the operator can be reduced.
In addition, the seedling plate support portion can suppress the seedling plate P from being shaken or blown by vibration or wind. Therefore, even if the seedling plate P comes into contact with the seedling frame 89 or the support members 91a and 91b, generation of a large contact sound can be suppressed. Further, the work of picking up the dropped seedling collecting plate P is not required, and the work efficiency can be improved and the burden on the operator can be reduced.

  Further, the shock absorbing members 92 and 93 can avoid the generation of sound and impact when the seedling plate P comes into contact with the seedling frame 89 and the support members 91a and 91b with fine fine vibrations. Can be prevented.

  In addition, since the supporting members 91a and 91b are provided in the fixed preliminary seedling frame 82, the storage space for the seedling collecting plate P can be secured more securely than in the movable preliminary seedling frame 81 whose form changes. P can be stored and held, and the seedling plate P can be taken in and out.

  In addition to the effects of the invention according to any one of claims 1 to 5, the present invention described in claim 7 is configured so that the seedling plate P is vibrated or winded by the seedling plate support portion 95. It is possible to suppress shaking and flying. Therefore, even if the seedling plate P comes into contact with the seedling frame 89 or the seedling plate support portion 95, generation of a large contact sound can be suppressed. Further, the work of picking up the dropped seedling collecting plate P is not required, and the work efficiency can be improved and the burden on the operator can be reduced. Furthermore, the components of the seedling plate support part 95 can be reduced.

  Further, since the seedling plate support portion 95 is provided in the fixed type preliminary seedling frame 82, the storage space for the seedling plate P can be secured more securely than in the case of the movable preliminary seedling frame 81 whose form changes. The board P can be stored and held, and the seedling collection board P can be taken in and out.

  In addition to the effect of the invention described in any one of claims 1 to 7, the present invention described in claim 8 includes a traveling operation unit 62 and a movable spare seedling frame 81 in the lateral direction of the body. Since it is arranged on the opposite side, when the operator on the traveling vehicle body 2 performs the switching operation of the movable spare seedling frame 81, the situation where the traveling operation unit 62 is erroneously operated is avoided. Can do. Therefore, since the seedling transplanting machine 1 can prevent the traveling vehicle body 2 from moving forward and backward, unnecessary work such as returning the traveling vehicle body 2 that has moved by mistake to the original position is unnecessary, and the work efficiency is improved. And the burden on the operator can be reduced.

  In addition, since the first power connection / disconnection operation unit 63 and the second power connection / disconnection operation unit 64 disposed at the foot of the traveling vehicle body 2 are disposed between the housing 74 and the movable spare seedling frame 81. A gap is formed between the casing 74 and the fixed reserve seedling frame 82, and an operator can easily get on and off the gap. Furthermore, since this seedling transplanter 1 can have such a gap on either the left or right side of the traveling vehicle body 2 and can get on and off without entering the mud in the field, dirt on the workplace on the traveling vehicle body 2 due to mud. And the traveling vehicle body 2 can be easily cleaned. Thus, this seedling transplanter 1 can improve the work efficiency and reduce the burden on the operator by arranging the first power connection / disconnection operation unit 63 and the second power connection / disconnection operation unit 64.

  Further, the operator operating the vehicle body guidance operation unit 65 can operate the second power connection / disconnection operation unit 64 with the other hand. Therefore, the seedling transplanting machine 1 enables the traveling vehicle body 2 to be decelerated and stopped by a simple operation with one hand when the operator wants to stop the traveling vehicle body 2. The burden can be reduced.

  In addition, since the emergency stop operation unit 66 is disposed at the front end portion of the traveling vehicle body 2 together with the vehicle body guidance operation unit 65, an operator operating the vehicle body guidance operation unit 65 requires an emergency stop of the traveling vehicle body 2. When the determination is made, the operator operating the vehicle body guidance operation unit 65 can operate the emergency stop operation unit 66 with the other hand. Therefore, since the seedling transplanting machine 1 can stop the traveling vehicle body 2 by a simple operation with one hand, it is possible to ensure safety and prevent damage to the machine body.

  According to the ninth aspect of the present invention, in addition to the effect of the eighth aspect of the invention, when the operator operates the vehicle body guide operation unit 65 in front of the body and below the body, the center marker 67 is Do not hit the worker. Thereby, the operator can operate the vehicle body guide operation unit 65 in an easy-to-operate posture. Accordingly, it is possible to improve the work efficiency when operating the vehicle body guide operation unit 65 and reduce the burden on the operator.

  According to the tenth aspect of the present invention, in addition to the effect of the ninth aspect of the present invention, even if the center marker 67 is to be rotated forward of the machine body, the vehicle body guide operation portion 65 serves as a locking portion and becomes the center. The marker 67 cannot be rotated forward. Therefore, since the center marker 67 cannot fall forward in the course of traveling, it is possible to avoid a situation in which the center marker 67 is difficult to be seen by an operator on the traveling vehicle body 2, and the traveling vehicle body using the center marker 67 as a mark. 2 straight operation becomes easy.

  In addition to the effect of the invention described in claim 9 or 10, the present invention described in claim 11 can secure a sufficient storage space even when stored in a narrow building or a carrier of a small transportation means. Further, it is possible to avoid the situation where the vehicle body guide operation unit 65 and the center marker 67 protrude from the loading platform of the building or the transportation means, and the durability of the vehicle body guide operation unit 65 and the center marker 67 can be improved.

FIG. 1 is a side view of an embodiment of a seedling transplanter according to the present invention. FIG. 2 is a top view of the seedling transplanter of the present embodiment. FIG. 3 is a front view of the seedling transplanter of the present embodiment. FIG. 4 is a side view of the seedling transplanting machine of the present embodiment and is a diagram for explaining the movable spare seedling frame. FIG. 5 is a diagram for explaining a developed form of the movable preliminary seedling frame. FIG. 6 is a top view of the seedling transplanter of the present embodiment, and is a diagram for explaining the movable spare seedling frame. FIG. 7 is a side view of the seedling transplanter of the present embodiment, and is a diagram for explaining the movable spare seedling frame. FIG. 8 is a diagram illustrating the rotation lock unit. FIG. 9-1 is a perspective view illustrating a fixed preliminary seedling frame. FIG. 9-2 is a perspective view illustrating the fixed preliminary seedling frame. FIG. 10 is a perspective view for explaining the seedling plate support portion. FIG. 11 is a perspective view illustrating the seedling plate support part. FIG. 12 is a side view for explaining the seedling plate support portion. FIG. 13 is a top view for explaining the seedling plate support portion. FIG. 14 is a front view for explaining the seedling plate support portion. FIG. 15 is a front view of the seedling transplanter of the present embodiment, and is a diagram for explaining the vehicle body guidance operation unit and the center marker. FIG. 16 is a side view of the seedling transplanter of the present embodiment, and is a diagram for explaining the vehicle body guidance operation unit and the center marker. FIG. 17 is a side view for explaining a vehicle body guidance operation unit and a center marker turning mechanism. FIG. 18 is a side view illustrating the vehicle body guidance operation unit and the center marker. FIG. 19 is a side view illustrating the vehicle body guidance operation unit and the center marker. FIG. 20 is a top view illustrating the tilt sensor.

  Below, the example of the seedling transplanter concerning the present invention is described in detail based on a drawing. In addition, this invention is not limited by this Example.

[Example]
An embodiment of a seedling transplanter according to the present invention will be described with reference to FIGS.

  The code | symbol 1 of FIG.1 and FIG.2 shows the seedling transplanter of a present Example. In the following, the forward direction of the aircraft is defined as forward, and left and right are defined as viewed from the direction of travel.

  The seedling transplanting machine 1 is roughly divided into a traveling vehicle body 2 that moves the body forward, turns, and the like, and a seedling transplanting device 3 that is disposed behind the traveling vehicle body 2.

  The traveling vehicle body 2 illustrated here is a so-called four-wheel drive vehicle in which four wheels W are drive wheels. The traveling vehicle body 2 may be a full-time four-wheel drive vehicle that always generates driving force on all the wheels W, or a part-time four-wheel drive vehicle that can switch between two-wheel drive and four-wheel drive. May be.

  As shown in FIGS. 1 and 2, the traveling vehicle body 2 includes a power source (engine) 20 attached to the front frame 11. The engine 20 is a heat engine such as a diesel engine or a gasoline engine, and is disposed substantially in the center in the left-right direction of the machine body. In the illustrated traveling vehicle body 2, the engine 20 is mounted so that the output shaft 20 a protrudes toward the left side of the body. Therefore, the engine belt 21 wound around the output shaft 20a via a pulley or the like is also arranged on the left side of the machine body. The traveling vehicle body 2 includes a power connection / disconnection device (clutch) (not shown) that connects and disconnects the power transmission of the engine 20.

  The power of the engine 20 is transmitted to the hydraulic continuously variable transmission 31 as the main transmission via the engine belt 21. The hydraulic continuously variable transmission 31 is a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). In the hydraulic continuously variable transmission 31, hydraulic pressure is generated by a hydraulic pump driven by the power of the engine 20, and the hydraulic pressure is converted into a mechanical force (rotational force) by a hydraulic motor and output. The converted force is transmitted to the input shaft of the mission case 32. The force transmitted to the mission case 32 is transmitted to an internal sub-transmission (not shown) and is shifted, and is divided into a driving power to the drive wheels W and a driving power to the seedling planting device 3 for output. Is done.

  The seedling planting device 3 is attached to the rear portion of the traveling vehicle body 2 via the lifting link device 40. The lifting link device 40 includes a parallel link mechanism 41 that connects the rear portion of the traveling vehicle body 2 and the seedling planting device 3, and moves the seedling planting device 3 up and down by an expansion and contraction operation of the hydraulic lifting cylinder 42. The lifting link device 40 raises the seedling planting device 3 to the non-working position or lowers it to the ground work position (ground planting position) by the lifting operation.

  This seedling planting device 3 has a seedling placement platform 51 that can reciprocate in the left-right direction of the machine body, and a seedling planting plant 52a that has a planting rod 52a that scrapes one seedling bed and implants it into a farm scene. A tool 52, left and right side floats 53 that level the ground while sliding on the seedling planting surface, and a center float 54 at the center of the body in the left and right direction of the body.

  The seedling transplanter 1 is provided with a control device 60 having various operation parts for an operator to operate such a traveling vehicle body 2 and the seedling transplanting device 3.

  The control device 60 is disposed at the center of the vehicle body in the left-right direction of the vehicle body at the front of the vehicle body of the traveling vehicle body 2. Further, the control device 60 is provided above the airframe above the floor surface (the floor surface on which an operator puts his / her foot when getting on) 71 at the front of the airframe. It should be noted that the engine 20 that protrudes above the floor 71 from the floor 71 is covered with the engine cover 72 at the rear of the control device 60. A cockpit 73 is installed on the engine cover 72.

  The control device 60 is installed in the casing (front cover) 74 or in the vicinity thereof. A fuel tank for engine fuel and the like are disposed inside the front cover 74. As the control device 60, for example, a steering operation unit (handle) 61 for steering the steering wheel of the traveling vehicle body 2, a traveling operation unit (HST lever) 62 for operating the hydraulic continuously variable transmission 31, and the like. The first power connection / disconnection operation portion (clutch pedal) 63 for connecting / disconnecting the power connection / disconnection device (clutch) from above the traveling vehicle body 2 and the power connection / disconnection device from the front of the traveling vehicle body 2 are disconnected. A second power connection / disconnection operation portion (clutch lever) 64 for performing contact operation, a vehicle body guidance operation portion (front handle) 65 for an operator to guide the traveling vehicle body 2 from the front of the traveling vehicle body 2, and a traveling vehicle body And an emergency stop operation section (emergency stop switch) 66 for forcibly stopping all the functions of No. 2 are provided.

  The HST lever 62 operates the hydraulic continuously variable transmission 31 to perform forward / reverse switching of the traveling vehicle body 2 and travel speed adjustment. The HST lever 62 is provided with a fixed spare seedling frame 82 on the left and right sides of the machine body. (In other words, the movable spare seedling frame 81 on the left and right sides of the machine body is not provided). Further, the HST lever 62 protrudes from the upper part of the front cover 74 toward the upper side of the machine body. In this example, the HST lever 62 is arranged on the left side of the body.

  As shown in FIGS. 2 and 3, the clutch pedal 63 is disposed between the front cover 74 and the movable spare seedling frame 81. For example, the clutch pedal 63 protrudes from the side of the front cover 74 near the operator's feet on the traveling vehicle body 2. The operator steps on the clutch pedal 63 from above the traveling vehicle body 2 to operate the power connection / disconnection device, thereby disconnecting the power transmission of the engine 20. The traveling vehicle body 2 decelerates when this power transmission is cut off, and then stops.

  As shown in FIGS. 2 and 3, the clutch lever 64 is directed from the floor 71 at the front of the aircraft to the front of the aircraft and forward of the aircraft so that the power connection / disconnection device can be connected / disconnected from the front of the traveling vehicle body 2. Protruding. For example, in this example, like the clutch pedal 63, the clutch lever 64 is disposed between the front cover 74 and the movable spare seedling frame 81. An operator in front of the machine body operates the power connection / disconnection device by manually raising (or lowering) the clutch lever 64 from the front of the traveling vehicle body 2 to cut off the power transmission of the engine 20. Thus, since this seedling transplanter 1 can perform the connection / disconnection operation of the power connection / disconnection device from the front of the traveling vehicle body 2, it is possible to improve the work efficiency and reduce the burden on the operator.

  As shown in FIGS. 2 and 3, the front handle 65 is disposed in front of the machine body with respect to the lower portion of the front cover 74. That is, the front handle 65 is disposed at the center of the vehicle body in the left-right direction of the vehicle body at the front end portion of the traveling vehicle body 2. The front handle 65 can be rotated in the longitudinal direction of the aircraft with the lower portion of the aircraft as a fulcrum. The front handle 65 is attached to the front frame 11. For example, the front handle 65 includes a grip formed in a loop shape. For example, when the operator carries the seedling transplanter 1 on an inclined ground, the operator holds the grip and rotates the front handle 65 forward of the machine body to suppress the lifting of the seedling transplanter 1 and maintain the balance during transportation. In this manner, in the seedling transplanting machine 1, an operator operating the front handle 65 can operate the clutch lever 64 with the other hand. Therefore, the seedling transplanting machine 1 enables the traveling vehicle body 2 to be decelerated and stopped by a simple operation with one hand when the operator wants to stop the traveling vehicle body 2. The burden can be reduced.

  The emergency stop switch 66 forcibly stops the operating engine 20 or the like, for example, and is provided on the front handle 65. For example, in this example, the emergency stop switch 66 is disposed on the side of the grip of the front handle 65 where the left and right fixed spare seedling frames 82 are provided. In this manner, in the seedling transplanting machine 1, the emergency stop switch 66 is disposed together with the front handle 65 at the front end portion of the traveling vehicle body 2, so that an operator who operates the front handle 65 has the emergency of the traveling vehicle body 2. When it is determined that a stop is required, the operator operating the front handle 65 can operate the emergency stop switch 66 with the other hand. Therefore, since the seedling transplanting machine 1 can stop the traveling vehicle body 2 by a simple operation with one hand, it is possible to ensure safety and prevent damage to the machine body.

  On the left side and the right side of the aircraft of the control device 60, a preliminary seedling frame having a plurality of preliminary seedling platforms is provided. A seedling for replenishment for replenishing the seedling planting device 3 is placed on the preliminary seedling placing stand. In the traveling vehicle body 2, a movable spare seedling frame 81 is disposed on either the left or right side of the machine body, and a fixed spare seedling frame 82 is disposed on the other side. In this example, as shown in FIG. 3, a movable spare seedling frame 81 is arranged on the right side of the body of the front frame 11 via first and second holding members 83 a and 83 b and is held on the left side of the body of the front frame 11. A fixed preliminary seedling frame 82 is arranged via the member 84.

  The movable preliminary seedling frame 81 includes a plurality of preliminary seedling platforms (in this example, two preliminary seedling platforms 81a and 81b) stacked in the vertical direction of the machine, and a plurality of preliminary seedling platforms ( This is a preliminary seedling frame that can be switched between the unfolded form shown in FIG. 5 in which the preliminary seedling platforms 81a and 81b) are arranged in the longitudinal direction of the machine body.

  In this way, the seedling transplanting machine 1 operates the movable preliminary seedling frame 81 to form the first preliminary seedling mounting table 81a and the second preliminary seedling mounting table 81b in a stacked form, so that the traveling vehicle body 2 can be viewed from above. When the traveling vehicle body 2 is moved, it becomes possible to take out the seedlings loaded on the first and second preliminary seedling platforms 81a and 81b, and the front and rear width of the movable preliminary seedling frame 81 can be kept short. The movable spare seedling frame 81 is prevented from coming into contact with an obstacle such as a wall outside the field and being damaged. On the other hand, by setting the first and second preliminary seedling platforms 81a and 81b to the expanded form, the operation of loading seedlings on the first and second preliminary seedling platforms 81a and 81b from the front of the traveling vehicle body 2 can be performed. It becomes possible. Therefore, since the seedling transplanter 1 can load seedlings from above the traveling vehicle body 2 and from the front of the traveling vehicle body 2, it is possible to improve work efficiency and reduce the burden on the operator.

  Here, when the movable spare seedling frame 81 is in the unfolded form, the movable preliminary seedling frame 81 is located on the front side of the first of the first and second preliminary seedling platforms 81a and 81b (first preliminary seedling platform 81a). It is desirable that the vehicle body protrudes forward from the front end of the traveling vehicle body 2. Thus, even if there is a water channel between the field and the outside of the field, the seedling transplanter 1 can bring the first preliminary seedling table 81a closer to the operator across the water channel and the like. Loading work is facilitated, and the work efficiency can be improved and the burden on the worker can be reduced.

  The movable preliminary seedling frame 81 has a switching operation unit for switching between the stacked form and the deployed form.

  The switching operation unit has a link mechanism 85 interposed between the first and second preliminary seedling platforms 81a and 81b. By operating the link mechanism 85, the stacking form and the unfolding form are provided. Switching takes place. As shown in FIG. 3, the link mechanism 85 is disposed on the inner side of the machine body with respect to the first and second preliminary seedling platforms 81a and 81b. The link mechanism 85 includes a first link arm 85a on the front side of the machine body, a second link arm 85b on the rear side of the machine body, and a first holding member 85c fixed to an inner part of the machine body of the first preliminary seedling table 81a. , And a second holding member 85d fixed to the inner part of the body of the second preliminary seedling table 81b. The first link arm 85a and the second link arm 85b are arranged side by side in the longitudinal direction of the machine body. One end of the first link arm 85a is rotatably held with respect to the first holding member 85c, and the other end is rotatably held with respect to the second holding member 85d. On the other hand, the second link arm 85b is rotatably held at one end with respect to the first holding member 85c at the rear of the body relative to the holding portion of the first link arm 85a, and the other end is the first link arm 85a. The second holding member 85d is held rotatably with respect to the second holding member 85d behind the fuselage than the holding portion.

  As shown in FIG. 4, the first link arm 85a on the front side of the machine body is a machine body on the front side of the machine body in the first and second preliminary seedling mounting bases 81a and 81b of the movable preliminary seedling frame 81 in the laminated form. It is desirable to have a bent shape that forms a space on the side. As a result, the seedling transplanting machine 1 can insert and remove seedlings from the front of the first and second preliminary seedling platforms 81a and 81b without being obstructed by the first link arm 85a. Further, as shown in FIG. 4, the second link arm 85b on the rear side of the machine body is on the rear side of the machine body in the first and second preliminary seedling platforms 81a and 81b of the movable preliminary seedling frame 81 in the laminated form. It is desirable to have a bent shape that forms a space on the side of the aircraft. Thereby, this seedling transplanting machine 1 can take in and out seedlings from the rear of the first and second preliminary seedling platforms 81a and 81b without being obstructed by the second link arm 85b. Therefore, the seedling transplanter 1 can improve the work efficiency and reduce the burden on the worker.

  Here, a first locking portion 85e that protrudes downward from the fuselage is formed on the rear side of the fuselage of the first holding member 85c. And the 2nd latching | locking part 85f protruded toward the upper body side is formed in the body front part side of the 2nd holding member 85d. The first latching portion 85e and the second latching portion 85f are for preventing the first preliminary seedling stage 81a from moving further downward in the machine body when the movable preliminary seedling frame 81 is in the unfolded configuration. . Therefore, the first locking portion 85e and the second locking portion 85f have such a shape that the first preliminary seedling stand 81a cannot be moved downward when the movable preliminary seedling frame 81 is in the unfolded configuration. Arrange. Here, since the first locking portion 85e and the second locking portion 85f are arranged in two places, the first locking portion 85e and the second locking portion 85f can be made small, The first locking portion 85e and the second locking portion 85f do not get in the way, for example, when seedlings are unloaded.

  Further, the switching operation portion includes a main operation member (rear grip) 86a that allows an operator to perform a switching operation between the stacked form and the unfolded form from above the traveling vehicle body 2, and an operator from the front of the traveling vehicle body 2. Is provided with an auxiliary operation member (front grip) 86b capable of performing the switching operation. As a result, the seedling transplanting machine 1 can switch between the stacked form and the deployed form of the movable spare seedling frame 81 from above the traveling vehicle body 2 and from the front of the traveling vehicle body 2, thereby improving work efficiency and work. Can be reduced.

  The rear grip 86a and the front grip 86b are located on the front side of the first and second preliminary seedling platforms 81a and 81b in the unfolded configuration in the left-right direction of the aircraft and on the uppermost level in the stacked configuration. It is desirable to arrange between the first mechanism (first preliminary seedling table 81a) and the link mechanism 85. The rear grip 86a is disposed between the rear side of the first preliminary seedling stage 81a and the link mechanism 85. On the other hand, the front grip 86b is disposed between the machine body front side of the first preliminary seedling stage 81a and the link mechanism 85. Thereby, this seedling transplanter 1 can provide an interval between the operator's hand and the seedling on the first preliminary seedling stage 81a when performing the switching operation between the stacked form and the deployed form. . Therefore, since this seedling transplanting machine 1 can reduce the possibility of folding or crushing the seedling by the hand of the operator, the seedling can be loaded and unloaded without being distracted by the possibility. In addition, since the rear grip 86a and the front grip 86b do not get in the way when loading and unloading, it is possible to improve the work efficiency and reduce the burden on the operator. In addition, since seedling growth defects and the like can be avoided, wasteful seedlings can be reduced. Here, in order to further enhance these effects, the rear grip 86a and the front grip 86b may be arranged away from the first preliminary seedling stage 81a up to the upper side of the body of the link mechanism 85. In the case where no projecting object such as the clutch pedal 63 is provided between the link mechanism 85 and the control device 60, it is between the first preliminary seedling stand 81a and the link mechanism 85 or above the body of the link mechanism 85. By providing the rear grip 86a and the front grip 86b, a space for getting on and off the operator can be secured.

  Further, the rear grip 86a and the front grip 86b have a length in the longitudinal direction of the machine body of the first and second preliminary seedling platforms 81a and 81b (particularly the first preliminary seedling platform 81a) of the movable preliminary seedling frame 81. It is desirable to arrange it within the range. As a result, the seedling transplanting machine 1 has the rear grip 86a and the front grip 86b that do not obstruct the operator from getting on and off the side of the traveling vehicle body 2, so that getting on and off from the side becomes easy, and the work efficiency is improved. And the burden on the operator can be reduced. Further, since the front grip 86b does not protrude from the first and second preliminary seedling platforms 81a and 81b to the front of the machine body, the seedling transplanter 1 does not come into contact with a wall or the like when the vehicle is turning. Therefore, the durability of the front grip 86b can be improved.

  Further, the rear grip 86a is desirably arranged at a position higher in the vertical direction of the body than the front grip 86b. This is because the operator on the traveling vehicle body performs the switching operation at a higher position than the worker in front of the traveling vehicle body 2.

  By the way, as shown in FIGS. 3 to 6, the first and second preliminary seedling platforms 81 a and 81 b have sidewalls 87 on both sides in the left and right direction of the body to prevent the seedling from falling in the left and right direction of the body. It is erected towards. For this reason, the first and second spare seedlings arranged on the side of the body of the rear grip 86a and the front grip 86b so that an operator having the rear grip 86a and the front grip 86b does not touch the side wall 87. As for the platforms 81a and 81b (in particular, the first preliminary seedling platform 81a in this case), a side wall 87 is provided except for an aircraft side portion facing the rear grip 86a and an aircraft side portion facing the front grip 86b. It is desirable. For example, in this example, as shown in FIGS. 4 and 5, a notch 87a and a notch 87b are formed in a side part of the body facing the rear grip 86a and a side part of the body facing the front grip 86b, respectively. To do. Thereby, in this seedling transplanting machine 1, the operator's hand having the rear grip 86a and the front grip 86b becomes more difficult to contact the first preliminary seedling stand 81a, and the operation for switching the movable preliminary seedling frame 81 is performed. Therefore, the work efficiency can be improved and the burden on the worker can be reduced.

  Here, the link mechanism 85 is provided with a rotation lock portion 88 that prohibits the rotation operation of the first link arm 85a and the second link arm 85b when the movable spare seedling frame 81 is in a laminated form. . Thereby, even if the traveling vehicle body 2 is greatly swung up and down due to the unevenness of the farm field, the seedling transplanting machine 1 has the first spare such that the movable spare seedling frame 81 arbitrarily moves from the stacked form to the deployed form. Unnecessary movement of the seedling table 81a can be avoided. Therefore, in this seedling transplanting machine 1, since the seedling placed on the first preliminary seedling placing table 81a does not fall due to vibration or the like, the work of picking up the dropped seedling becomes unnecessary, improving the work efficiency and reducing the burden on the operator. Can be planned.

  As shown in FIG. 7, the rotation lock portion 88 includes a bracket 88a fixed to the holding portion 85g of the preliminary seedling stand 81b, a lock member 88b rotatable relative to the bracket 88a, and the lock member. And a support member 88c that holds the 88b in a pivotable manner on the bracket 88a. In the rotation lock portion 88, the lock member 88b is formed to be hooked on the second link arm 85b with a spring material. Here, as shown in the upper diagram of FIG. 8, the lock member 88b generates a spring force in a direction away from the second link arm 85b when the lock is released. Then, the lock member 88b is formed in such a shape as to get over the surface of the second link arm 85b while generating an elastic force, as shown in the center diagram of FIG. 8, so that the lock is not released by vibration or the like. Further, as shown in the lower diagram of FIG. 8, the lock member 88b generates a spring force in a direction in which the lock member 88b is not unlocked without permission from the second link arm 85b when locked. For this purpose, the lock member 88b is provided with a difference between the fulcrum and the tip as shown in the figure below.

  As described above, the HST lever 62 is disposed on the opposite side of the movable spare seedling frame 81 in the left-right direction of the machine body. Therefore, the seedling transplanting machine 1 can avoid a situation in which the operator on the traveling vehicle body 2 erroneously operates the HST lever 62 when switching the movable spare seedling frame 81 is performed. it can. Therefore, since the seedling transplanting machine 1 can prevent the traveling vehicle body 2 from moving forward and backward, unnecessary work such as returning the traveling vehicle body 2 that has moved by mistake to the original position is unnecessary, and the work efficiency is improved. And the burden on the operator can be reduced.

  Further, as described above, the clutch pedal 63 and the clutch lever 64 disposed at the foot of the traveling vehicle body are disposed between the front cover 74 and the movable spare seedling frame 81. For this reason, in this seedling transplanting machine 1, since a gap is formed between the front cover 74 and the fixed spare seedling frame 82, an operator can easily get on and off the gap. Furthermore, since this seedling transplanter 1 can make such a gap on either the left or right side of the traveling vehicle body 2 and can get on and off without the operator entering the mud in the field, dirt on the workplace on the traveling vehicle body can be removed. This can be reduced and the traveling vehicle body 2 can be easily cleaned. Thus, the seedling transplanting machine 1 can improve the work efficiency and reduce the burden on the operator by arranging the clutch pedal 63 and the clutch lever 64.

  On the other hand, as shown in FIG. 3, the fixed preliminary seedling frame 82 has a plurality of preliminary seedling platforms (in this example, third and fourth preliminary seedling platforms 82a and 82b) arranged at equal intervals in the vertical direction of the machine body. This is a preliminary seedling frame having a seedling frame 89 fixedly arranged.

  Compared with the movable preliminary seedling frame 81, the fixed preliminary seedling frame 82 is firmly regulated by the seedling frame frame 89 in the movement of the third and fourth preliminary seedling mounting stands 82a and 82b. The possibility that the seedlings placed on the third and fourth preliminary seedling placing stands 82a and 82b fall due to vibration or the like is low, and the work of picking up the dropped seedlings becomes unnecessary, thereby improving the work efficiency and reducing the burden on the operator. be able to.

  Further, the third and fourth preliminary seedling platforms 82a and 82b of the fixed preliminary seedling frame 82 are also provided with side walls 87 for preventing the seedlings from falling in the lateral direction of the aircraft on both sides in the lateral direction of the aircraft. Standing up.

  As shown in FIG. 9A, the fixed preliminary seedling frame 82 includes a seedling plate support portion including at least two first and second support members 91a and 91b for storing and holding the seedling plate P. Is provided. The first support member 91a is a member in which both ends bent to the outside of the machine body are fixed to the machine body upper side and the machine body inside of the seedling frame frame 89, and from a cross section cut from the part in the thickness direction of the seedling plate P It has a shape with a wide space. The second support member 91b is a member in which both ends bent to the outside of the machine body are fixed to the machine body lower side and the machine body inner side of the seedling frame frame 89, and from a cross section cut from the part in the plate thickness direction of the seedling plate P The second support member 91b has a shape provided with a large space (a space where the second support member 91b does not hit a surrounding part with a loud noise). In the seedling plate support portion of this form, the seedling plate P can be stored and held by inserting the seedling plate P into the space from above the body. This seedling transplanter 1 can suppress the seedling plate P from being shaken or blown by vibration, wind, or the like by the seedling plate support part. Therefore, the seedling transplanter 1 can suppress the generation of a loud contact sound even if the seedling collecting plate P contacts the seedling frame 89 and the first and second support members 91a and 91b. Further, the seedling transplanting machine 1 does not require the work of picking up the dropped seedling collecting plate P, and can improve the work efficiency and reduce the burden on the operator. Furthermore, in this seedling transplanter 1, since the seedling plate support portion is provided in the seedling frame frame 89, the strength of the first and second support members 91a and 91b can be ensured. Furthermore, since the seedling plate support part is a structure in which the seedling plate P is taken in and out from above the machine body, it is difficult for the hand to hit surrounding parts when taking in and out, so that the work efficiency is improved and the burden on the operator is reduced. Can do. Further, the seedling plate support portion can secure a boarding / alighting space between the fixed preliminary seedling frame 82 and the control device 60 due to its shape. In addition, since the seedling plate support portion is provided in the fixed preliminary seedling frame 82, the storage space for the seedling plate P can be ensured more securely than in the movable preliminary seedling frame 81 whose form changes. The seedling plate P can be stored and held, and the seedling plate P can be taken in and out. The seedling plate support part may be provided on the dominant hand side of an operator who can easily handle heavy seedlings, thereby improving the work efficiency and reducing the burden on the operator. In order to facilitate the seedling removal work by the seedling collection board P and the storage work of the seedling collection board P in the seedling collection board support portion, as shown in FIG. The seedling surface may be inclined (that is, the plate thickness may be reduced) as it approaches the tip.

  Here, considering the ease of taking in and out of the seedling plate P, the seedling plate support portion may have a gap between the seedling plate P and each space of the seedling plate support portion. desirable. However, the gap causes contact between the seedling plate P and the seedling frame frame 89, contact between the seedling plate P and the first and second support members 91a and 91b, and generates a contact sound. End up. In order to prevent this, as shown in FIG. 10, a buffer member 92 is provided at a predetermined portion of the seedling frame frame 89 (a contact portion with the seedling plate P and a proximity portion) where the seedling plate P may come into contact. It is desirable to install. Further, as shown in FIG. 10, the first and second support members 91a and 91b with which there is a risk of contact with the seedling plate P are also buffered as shown in FIG. It is desirable to attach member 93. The buffer members 92 and 93 are, for example, a vinyl chloride plate or rubber. Thereby, this seedling transplanting machine 1 can avoid the generation of sound and impact when the seedling collecting plate P is in contact with the seedling frame frame 89 and the first and second support members 91a, 91b with fine fine vibrations, It is possible to prevent the operator and the vicinity of the field from feeling uncomfortable and to prevent the seedling plate P from being damaged.

  The seedling plate support part may be capable of inserting and removing the seedling plate P from the front-rear direction of the machine body. For example, as shown in FIG. 11, the seedling plate support portion in this case is obtained by rotating the first and second support members 91a and 91b by 90 degrees when viewed from the side of the machine body (first and second). 2 is the same as the supporting members 94a and 94b). According to the seedling plate support portion, the seedling plate P can be taken in and out even while the operator is seated on the cockpit 73, so that the work efficiency can be improved and the burden on the operator can be reduced. However, since the seedling plate P may drop due to vibration or the like, the seedling plate support portion of the seedling plate P can be disposed by obliquely arranging the first and second support members 94a and 94b. The seedling plate P may be taken in and out from the cockpit 73 while preventing the fall. Also. Also in this case, it is preferable to provide the buffer members 92 and 93 on the seedling frame 89 and the first and second support members 94a and 94b.

  Further, the seedling plate support portion may have a structure shown in FIGS. The seedling plate support portion 95 stores and holds the seedling plate P with a base portion 95a provided on the upper side of the body frame frame 89 and a protruding portion 95b that protrudes downward from the base portion 95a. To do. The seedling plate support portion 95 is similar to a shape in which the center portion inside the machine body of the first support member 91a is protruded downward from the machine body as a projection part 95b. According to the seedling plate support portion 95, not only can the same effect as the seedling plate support portion comprising the first and second support members 91a and 91b be obtained, but the number of components can also be reduced.

  Here, even when the seedling plate support portion 95 is employed, a buffer member can be attached to the contact portion and the proximity portion with the seedling plate P in the seedling plate support portion 95 and the seedling frame frame 89. desirable. In addition, here, the seedling plate support part 95 may be rotated 90 degrees when viewed from the side of the machine body, or may be inclined. Furthermore, it is desirable to attach a buffer member to the contact portion and the proximity portion of the seedling plate support portion 95 and the seedling frame frame 89 with the seedling plate P for these rotated ones.

  By the way, as shown in FIGS. 15 and 16, the front handle 65 is attached to the L-shaped member 102 via the bracket 101 on the lower side of the machine body. The L-shaped member 102 is a member that extends downward from the fuselage and extends from the extended end toward the rear of the fuselage, and is attached to the front frame 11 via a bracket 103. That is, the front handle 65 is attached to the front frame 11 via these various members. As shown in FIG. 16, the front handle 65 is arranged such that a loop-like grip when not being operated is inclined forward with respect to the vertical direction of the aircraft.

  The front handle 65 has a pivot fulcrum 105 below the body of the grip, and is held in a state of being pivotable in the longitudinal direction of the body on the respective side walls 101a and 101b of the bracket 101 shown in FIG. On the side walls 101a and 101b, a notch 101c is formed on the upper side of the body with respect to the rotation fulcrum 105 and on the front side of the body so that the lower body side 65a of the grip can move during rotation. The front handle 65 can be rotated toward the front of the aircraft until the lower body 65a of the grip contacts the notch 101c. That is, the notch 101c serves as a locking portion for the front handle 65 when the front handle 65 is rotated in front of the machine body and downward in the machine body.

  Further, the bracket 101 holds a center marker 67 that is a guide for straight running, so that the center marker 67 can rotate in the longitudinal direction of the machine body. The center marker 67 is a rod-shaped protrusion projecting upward from the airframe, and is disposed between the front handle 65 and the front cover 74 and at the airframe central portion in the left-right direction of the airframe. The center marker 67 has a rotation fulcrum 106 on the lower side of the machine body, and is held in a rotatable state on the respective side walls 101 a and 101 b of the bracket 101. As shown in FIG. 16, the center marker 67 is arranged in parallel to the vertical direction of the machine body when not operated. The center marker 67 may be rotated in conjunction with the rotation operation of the front handle 65, or may be individually rotated regardless of the rotation operation of the front handle 65. Here, the latter is assumed.

  Here, as shown in FIG. 17, the center marker 67 has a smaller turning angle to the front of the machine relative to the vertical direction of the machine than the front handle 65, and the rearward of the machine relative to the vertical direction of the machine than the front handle 65. It is comprised so that a rotation angle may become large. In FIG. 17, θ1 is the maximum rotation angle of the center marker 67 forward of the aircraft relative to the vertical direction of the aircraft, and θ2 is the maximum rotation angle of the front handle 65 forward of the aircraft relative to the vertical direction of the aircraft. Further, θ3 is the maximum rotation angle of the center marker 67 to the rear of the aircraft with respect to the vertical direction of the aircraft. Thereby, in this seedling transplanting machine 1, the center marker 67 does not hit the operator when the operator operates the front handle 65 forward of the machine body and below the machine body. Thereby, the worker can operate the front handle 65 in an easy-to-operate posture. Therefore, the seedling transplanter 1 can improve the work efficiency when operating the front handle 65 and reduce the burden on the operator.

  Further, the center marker 67 is provided with the pivot fulcrum 106 on the upper side of the machine body relative to the pivot fulcrum 105 of the front handle 65, and if the front handle 65 is not pivoted forward, the center marker 67 rotates forward. The configuration cannot be moved. That is, as shown in FIG. 17, even if the center marker 67 is to be rotated forward of the machine body, the machine body upper side 65b of the grip in the front handle 65 becomes a locking portion and cannot be rotated forward. Therefore, the seedling transplanter 1 can avoid the situation that the center marker 67 is difficult to see from the operator on the traveling vehicle body because the center marker 67 does not fall forward in front of the aircraft during traveling. The straight traveling operation of the traveling vehicle body 2 as a mark becomes easy.

  The front handle 65 and the center marker 67 are disposed at a position protruding from the front end portion of the traveling vehicle body 2. Thereby, when the traveling vehicle body 2 is housed in a small transportation means such as a narrow building or a light truck, the front handle 65 and the center marker 67 may become an obstacle. Therefore, for example, when the bracket 103 and the front frame 11 are fixed by a fastening member such as a bolt, the fastening member is removed, and the front handle 65 and the center marker 67 are removed from the traveling vehicle body 2 to thereby build or transport the vehicle. You just have to store it. Further, for example, as shown in FIG. 18, an extra portion that can be fastened by the fastening member is prepared in the longitudinal direction of the body, and the front handle 65 and the center marker 67 are configured to be close to the traveling vehicle body 2 when stored. Also good. Further, for example, as shown in FIG. 19, the center marker 67 is configured to be freely detachable from the bracket 101, and the front handle 65 is provided between the traveling vehicle body 2 and the traveling road (for example, provided on the lower side of the traveling vehicle body 2). Further, the power transmission unit may be configured to be able to rotate to a position below the mission case 32). As described above, the seedling transplanter 1 can secure a sufficient storage space even when stored in a narrow building or a carrier of a small transportation means. In addition, the seedling transplanter 1 can avoid the situation where the front handle 65 and the center marker 67 protrude from the loading platform of the building or transportation means, and improve the durability of the front handle 65 and the center marker 67. Can do.

  As shown in FIG. 20, the traveling vehicle body 2 is provided with an inclination sensor 111 to warn of falling. The tilt sensor 111 is an angle sensor that detects the tilt angle of the airframe, and is disposed on the front frame 11. In this traveling vehicle body 2, when the inclination angle of the airframe detected by the inclination sensor 111 exceeds a predetermined angle, the operator is warned of the possibility of falling by sound or display on a monitor.

  The inclination sensor 111 is attached on the flat surface portion 11a of the front frame 11 in which the output shaft 20a of the engine 20 is disposed below and the transmission case 32 is disposed forward. Therefore, the mission case 32 becomes a wall, and mud adhesion to the inclination sensor 111 can be suppressed. Here, the engine 20 is attached to the front frame 11. However, since a buffer member (not shown) such as an insulator is interposed between the engine 20 and the front frame 11, the seedling transplanter 1 can avoid erroneous detection of the tilt sensor 111 due to vibration of the engine 20. .

  In addition, it is desirable that the tilt sensor 111 is disposed close to the center of the body in the left-right direction of the body in order to suppress detection variation between the left and right of the body. For example, the tilt sensor 111 is disposed as close as possible to the pedal strut 115 on the right side of the pedal strut 115 that supports a differential lock pedal (not shown) provided in the center of the airframe in the left-right direction. Accordingly, in the traveling vehicle body 2, the traveling harness 112 is also arranged on the right side of the body, and the traveling harness 112 is connected to the tilt sensor 111 on the right side of the body. Thereby, the traveling harness 112 can be connected to the inclination sensor 111 while avoiding the engine belt 21. Here, the reason why the inclination sensor 111 and the traveling harness 112 are arranged on the right side of the aircraft is that the engine belt 21 is arranged on the left side of the aircraft, and when the engine belt 21 exists on the right side of the aircraft, The sensor 111 and the traveling harness 112 are arranged on the left side of the aircraft.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 3 Seedling planting device 11 Front frame 11a Plane part 20 Engine 21 Engine belt 31 Hydraulic continuously variable transmission 32 Transmission case 40 Lifting link device 60 Steering device 62 Traveling operation part (HST lever)
63 1st power connection / disconnection operation part (clutch pedal)
64 Second power connection / disconnection operation part (clutch lever)
65 Car body guidance operation part (front handle)
66 Emergency stop operation section (Emergency stop switch)
67 Center marker 71 Floor 74 Housing (front cover)
81 movable preliminary seedling frame 81a first preliminary seedling platform 81b second preliminary seedling platform 82 fixed preliminary seedling frame 82a third preliminary seedling platform 82b fourth preliminary seedling platform 85 link mechanism 86a main operation member (rear grip )
86b Auxiliary operation member (front grip)
87 Side wall 88 Rotation lock part 89 Seedling frame frame 91a First support member 91b Second support members 92, 93 Buffer member 94a First support member 94b Second support member 95 Seedling plate support part 95a Base part 95b Projection part 101 Bracket 102 L-shaped member 103 Bracket 105 Rotating fulcrum 106 Rotating fulcrum 111 Inclination sensor 112 Traveling harness 115 Pedal strut P Seedling plate W Wheel

Claims (11)

A seedling planting device (3) is provided at the rear part of the traveling vehicle body (2), a movable spare seedling frame (81) is provided at the front part of the traveling vehicle body (2),
The movable preliminary seedling frame (81) includes a stacked form in which a plurality of preliminary seedling platforms (81a, 81b) are arranged in the vertical direction of the machine body and a plurality of preliminary seedling platforms (81a, 81b) arranged in the longitudinal direction of the machine body. A link mechanism (85) that can be switched to a deployed form is provided,
The link mechanism (85) wherein the vehicle body (2) on the, or the operation member (86a, 86b) for switching operation to the laminated form or deployed configuration from the front side of the vehicle body (2) provided with,
The link mechanism (85) includes two link arms (85a, 85b) arranged side by side in the longitudinal direction of the aircraft ,
Airframe front side of the link arm (85a) is along the lower side of the preliminary seedling stage (81b) which is fixed to the holding member of the movable preliminary seedling frame when said laminated form (81) (85d) and a bent from a portion along the a portion held on the upper side of the preliminary seedling table fixed holding member (81a) (85c) portions, before Symbol each spare when the previous SL laminated form The seedling stage (81a, 81b) has a bent shape that forms a space on the side of the body on the front side of the body, and the link arm (85b) on the rear side of the body has the upper side when the laminated form is used. A portion along the holding member (85c) fixed to the preliminary seedling stage (81a) and a portion bent along the portion along the holding member (85c) are held by the holding member (85d) fixed to the lower preliminary seedling stage (81b). and and a portion was the previous SL laminated form Before SL Each preliminary seedling stand can (81a, 81b) seedling transplanter, characterized in that the bent shape which forms a space inboard side of the aft body side in (1).   When the movable spare seedling frame (81) is in the unfolded configuration, the portion held by the holding member (85c) of the link arm (85a) on the front side of the machine body is along the holding member (85c). The link arm (85a) on the front side bends downward from the portion held by the holding member (85c) to form a space below the fuselage,
  The portion held by the holding member (85d) of the link arm (85b) on the rear side of the machine body is along the holding member (85d), and the link arm (85b) on the rear side of the machine body is held by the holding member (85d). The seedling transplanter according to claim 1, wherein a space is formed above the machine body by bending upward from the formed portion.   As the operation members (86a, 86b), a main operation member (86a) for switching the link mechanism (85) from the traveling vehicle body (2) to a stacked form or an unfolded form, and the front side of the traveling vehicle body (2) Provided with an auxiliary operation member (86b) for switching from a stacked form to a deployed form,
  The said link mechanism (85) is provided with the rotation lock part (88) which prohibits rotation operation of each said link arm (85a, 85b) when it is set as the said lamination | stacking form. The seedling transplanter described in 1. The link mechanism (85) is disposed inside the machine body with respect to the preliminary seedling mount (81a, 81b) of the movable preliminary seedling frame (81),
The main operating member (86a) is located on the front side of the machine body when the unfolded configuration of each of the preliminary seedling platforms (81a, 81b) and is the uppermost stage when the stacked configuration is used. Between the side and the link mechanism (85),
The auxiliary operation member (86b) is positioned on the front side of the machine body when the unfolded configuration is used, and the front side of the spare seedling platform (81a) which is the uppermost stage when the stacked configuration is used, and the link mechanism ( 85) . The seedling transplanter according to any one of claims 1 to 3, wherein the seedling transplanter is disposed between The main operating member (86a) and the auxiliary operating member (86b) may be within the range of the length of the movable seedling frame (81) in the longitudinal direction of the spare seedling platform (81a, 81b). Arranged,
The preliminary seedling platform (81a, 81b) includes side walls (87) that prevent the seedling from falling in the left-right direction of the machine body on both sides in the left-right direction of the machine body, and the main operation member (86a) and the auxiliary operation member ( 86b), each of the preliminary seedling platforms (81a, 81b) arranged on the side of the machine body is opposed to the side part of the machine body facing the main operation member (86a) and the auxiliary operation member (86b). The seedling transplanter according to claim 4, wherein the side wall (87) is provided except for a side portion of the machine body. A seedling frame frame (89) in which a plurality of preliminary seedling platforms (82a, 82b) are fixedly arranged in the vertical direction of the machine body on the side opposite to the side where the movable spare seedling frame (81) is provided. ) Is provided with a fixed preliminary seedling frame (82) having
The fixed preparatory seedling frame (82) is provided on the seedling frame frame (89), and includes a seedling plate support portion comprising at least two support members (91a, 91b) for storing and holding the seedling plate (P). And a buffer member (92, 93) provided at a contact portion and a proximity portion of the seedling frame frame (89) and the seedling plate support portion (P) in the seedling plate support portion. The seedling transplanter according to any one of claims 1 to 5.   The fixed preliminary seedling frame (82) includes a base (95a) provided on the upper side of the body of the seedling frame (89) and a projecting part (95b) projecting downward from the base (95a). The seedling transplanter according to any one of claims 1 to 5, further comprising a seedling plate support part (95) for storing and holding the seedling plate (P).   The control device (60) is disposed on a side provided with a casing (74) disposed at a center portion of the body in the left-right direction of the body and the fixed preliminary seedling frame (82) on the left and right of the body, and the traveling A travel operation unit (62) used for forward / reverse switching operation and travel speed adjustment operation of the vehicle body (2), and disposed between the casing (74) and the movable spare seedling frame (81); A first power connection / disconnection operation part (63) used for connection / disconnection operation from above the traveling vehicle body (2) of the power connection / disconnection device for connecting / disconnecting power transmission of the power source (20), and the housing (74); A second power connection / disconnection operation portion (64) disposed between the movable spare seedling frame (81) and used for connection / disconnection operation of the power connection / disconnection device from the front of the traveling vehicle body (2); The vehicle body (2) is disposed in front of the fuselage with respect to the lower portion of the casing (74), and the vehicle body (2) is connected to the vehicle body. 2) The vehicle body guide operation section (65) for guiding from the front of the vehicle body, and the vehicle body guide operation section (65) provided on the side where the fixed spare seedling frames (82) on the left and right sides of the machine body are provided. The seedling transplanter according to any one of claims 1 to 7, further comprising an emergency stop operation unit (66) for forcibly stopping all functions of the vehicle body (2). The vehicle body guide operation part (65) has a loop-shaped grip and is arranged so as to be able to rotate in the longitudinal direction of the aircraft with the lower part of the grip as the fulcrum.
A center marker (67) is provided between the vehicle body guide operation unit (65) and the housing (74) and at the center of the body in the left-right direction of the body, and projects as a guideline for straight traveling that projects upward from the body. ,
The center marker (67) has a smaller forward rotation angle with respect to the vertical direction of the fuselage than the vehicle body guide operation portion (65), and the rear of the vehicle body with respect to the vertical direction of the vehicle body than the vehicle body guide operation portion (65). The seedling transplanting machine according to claim 8, wherein the seedling transplanting machine is arranged so as to be pivotable in the longitudinal direction of the machine body with the lower side of the machine body as a fulcrum so that the rotation angle of the machine is increased.   The center marker (67) has a pivot fulcrum (106) provided above the pivot fulcrum (105) of the vehicle body guidance operation unit (65), and the vehicle body guidance operation unit (65). The seedling transplanter according to claim 9, wherein the seedling transplanter is configured so that it cannot be rotated forward unless it is rotated forward.   The seedling transplanting according to claim 9 or 10, characterized in that the vehicle body guide operation section (65) is configured to be able to rotate to a position below a power transmission section provided on a lower side of the traveling vehicle body (2). Machine.

Images