JP2014103918A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter for solving a problem that, although there is known a seedling transplanter having a reserve seedling loading platform comprising a plurality of reserve seedling loading plates and provided in front of a machine body, the reserve seedling loading platform is sometimes broken or cannot be moved by a motor when a heavy fertilizer container or the like is loaded, since the purpose of the reserve seedling loading platform is only for loading the reserve seedlings.SOLUTION: The problem is solved by a seedling planter in which an auxiliary loading member (101) for loading the fertilizer container is arranged above the reserve seedling loading platform (38), and a support arm (102) is provided for supporting the auxiliary loading member (101); the auxiliary loading member (101) takes a front lower inclination posture when the support arm (102) is turned forward; and the auxiliary loading member (101) takes a back lower inclination posture when the support arm (102) is turned backward.

Description

  The present invention relates to a seedling transplanter.

  The seedling transplanter of Patent Document 1 includes a plurality of spare seedling placement plates connected by a link arm, and a spare seedling placement base that can be switched between a configuration in which the preliminary seedling placement plates are arranged in the front-rear direction and a configuration in which the preliminary seedling placement plates are arranged in the vertical direction. Provided.

The seedling transplanter of Patent Document 2 includes a front spare seedling placement plate attached to a link arm that is pivotable forward and a link that is pivotable to the rear. A spare seedling stage provided with a rear seedling placement plate attached to the arm is provided.

JP 2011-125353 A JP2012-019692A

  However, these preliminary seedling platforms described in the patent literature are for loading seedlings and moving them from the front side to the rear side of the machine body, and the seedlings can be moved close to the seedling planting device, but fertilizers etc. It is not suitable for transporting heavy objects, and workers must move with a bag containing heavy fertilizers when replenishing fertilizer, etc. There is a problem that the efficiency of the replenishment work is reduced.

Although it is not impossible to load and transport the fertilizer on the preliminary seedling platform provided in the seedling transplanting machines of Patent Documents 1 and 2, by continuing to load the fertilizer container which is a heavy material, There is a possibility that the link arm may be deformed by a load, and there is a problem that the life of the spare seedling stage can be shortened. In addition, since the force required to rotate the link arm is much larger than that of the seedling, there is a problem that the labor of the operator is increased.

If fertilizer is loaded on the body of the seedling transplanter, the distance to move with the fertilizer will be shortened, but when the worker moves by replenishing seedlings, the fertilizer will block the movement range of the worker There is a problem that the work efficiency decreases.

The present invention has taken the following technical means to solve the above problems.
That is, the invention described in claim 1 is a fertilizer supplying fertilizer to a seedling planting device (4) that moves up and down rearward of the traveling vehicle body (2) and a seedling planted in the rear upper part of the traveling vehicle body (2). In a seedling transplanting machine provided with a device (5) and a preliminary seedling placing stand (38) for loading a spare seedling on the front part of the traveling vehicle body (2), a reserve seedling is placed above the preliminary seedling placing stand (38). And an auxiliary placement member (101) for loading the fertilizer container, and a support arm (102) for supporting the auxiliary placement member (101). When the support arm (102) is rotated forward, The auxiliary mounting member (101) is in a forward downward inclined posture, and when the support arm (102) is rotated backward, the auxiliary mounting member (101) is in a backward downward inclined posture. It is a seedling transplanting machine.

  According to the second aspect of the present invention, the rotation support points (103a, 103b) of the support arms (102a, 102b) arranged at the front and rear are arranged below the preliminary seedling mount (38), and the front and rear support arms are arranged. The auxiliary mounting member (101) is installed at the upper end (U) of (102a, 102b), and the front / rear distance of the upper end (U) of the front / rear support arms (102a, 102b) is set to the rotation fulcrum ( 103a, 103b), and the front and rear support arms (102a, 102b) are rotated forward, the auxiliary mounting member (101) is in a forward-downward tilted posture and the front-rear support The seedling transplanter according to claim 1, characterized in that the auxiliary placement member (101) is in a rearward downward inclined posture when the arms (102a, 102b) are rotated rearward.

  The invention described in claim 3 is the seedling transplanter according to claim 1 or 2, wherein a notch (104) is provided in a rear portion of the auxiliary mounting member (101). .

  According to a fourth aspect of the present invention, the support arm (102) is provided with an arm operation restricting member (105) for restricting the forward and backward rotation of the support arm (102), and the arm operation restricting member is provided. The member (105) is composed of an operation part (105a) facing the inside of the machine body and a restricting part (105b), and the restricting part (105b) restricts the rotational operation range of the arm operation restricting member (105). A regulating projection (107) is provided, and a receiving member (106) for the regulating portion (105b) of the arm operation regulating member (105) is provided on the preliminary seedling stage (38), and the receiving member (106). The seedling transplanting machine according to any one of claims 1 to 3, wherein the regulating protrusion (107) is in contact with the seedling transplanting machine.

  According to a fifth aspect of the present invention, the operation portion (105a) and the restriction portion (105b) of the arm operation restriction member (105) intersect perpendicularly, and the operation portion (105a) is supported by a support arm (102). ), The restricting portion (105b) is positioned at the rotation restricting position, and when the operating portion (105a) is operated to be substantially perpendicular to the support arm (102), The seedling transplanter according to claim 4, wherein the restriction portion (105b) is located at the restriction release position.

  In the invention according to claim 6, the preliminary seedling platforms (38, 38) are arranged on the left and right sides of the front side of the traveling vehicle body (2), respectively, and the preliminary seedling platforms (38, 38) inside the machine body. The seedling transplant according to any one of claims 1 to 5, wherein the support arms (102, 102) of the auxiliary placement members (101, 101) are provided so as to be pivotable back and forth. Machine.

  According to the first aspect of the present invention, the auxiliary placement member (101) is positioned above the reserve seedling stand (38), so that the fertilizer container and the spare seedling are placed in a place that does not hinder the work. Work efficiency is improved.

Further, when the support arm (102) that supports the auxiliary mounting member (101) is rotated forward, the auxiliary mounting member (101) is in a forward downward inclined posture, so that the auxiliary mounting member (protruding forward of the machine body) ( 101) Since it becomes easy to load the fertilizer container and the spare seedling, it becomes easy to load the fertilizer container and the spare seedling, and the work efficiency is improved.

In addition, when the support arm (102) that supports the auxiliary placement member (101) is rotated backward, the auxiliary placement member (101) is in a rearward downward inclined posture, so that the fertilizer application (5) and seedling planting are performed. Since the fertilizer container and the spare seedling can be brought close to the apparatus (4), the replenishment work of the fertilizer and the seedling is facilitated, and the work efficiency is improved.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the front-rear interval of the upper end portion (U) of the support arm (102a, 102b) on which the auxiliary mounting member (101) is arranged is adjusted. When the support arm (102) is rotated in the front-rear direction by configuring the support fulcrum (103a, 103b) to be wider than the front-rear distance, the auxiliary placement member (101) is in the front-down inclination posture or the rear-down inclination posture. Therefore, it becomes easy to load and replenish fertilizer containers and spare seedlings, and work efficiency is improved.

Further, when the auxiliary placement member (101) is positioned above the preliminary seedling stand (38), the auxiliary placement member (101) is in a substantially horizontal posture with respect to the traveling vehicle body (2). The fertilizer container and the spare seedling are prevented from falling from the auxiliary mounting member, and the work of picking up the fertilizer container and the spare seedling becomes unnecessary.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the support portion is provided by providing the notch portion (104) at the rear portion of the auxiliary mounting member (101). When the arm (102) is rotated backward, the fertilizer can be discharged from the notch (104) of the auxiliary placement member (101). Thereby, a fertilizer can be supplied to a fertilizer applicator (5), without moving a fertilizer container, and while working efficiency improves, an operator's labor is reduced.

  Further, when taking a spare seedling and moving it to the seedling planting device (4), the seedling can be manually picked up from the notch (104), and a seedling plate is auxiliary mounted from the notch (104). Since it can be inserted between the placement member (101) and the spare seedling, replenishment work of the seedling to the seedling planting device (4) is facilitated, and the work efficiency is improved.

  According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the support arm (102) restricts the back-and-forth rotation of the support arm (102). The arm operation restricting member (105) is rotatably provided, and the auxiliary seedling stage (38) is provided with the receiving member (106) of the restricting portion (105b) of the arm operation restricting member (105). Since the back and forth rotation of the support arm (102) can be restricted in a state where the placement member (101) is positioned above the preliminary seedling stage (38), the support arm ( 102) can be prevented from rotating back and forth to move the auxiliary mounting member (101), and work efficiency is improved.

In addition, a restriction protrusion (107) for restricting the rotational movement range of the arm movement restriction member (105) is provided, and the restriction protrusion (107) is in contact with the receiving member (106). The weight of the seedling can prevent the support arm (102) from tilting toward the spare seedling platform (38), so that the support arm (102) contacts the spare seedling platform (38) and does not rotate back and forth. The situation can be prevented, and fertilizer and seedling can be replenished and supplied efficiently.

Further, when the arm operation restricting member (105) is released, the restricting projection (107) comes into contact with the support arm (102) and restricts the operation of the arm operation restricting member (105) itself. 105) Other members that determine the rotation operation range become unnecessary.

  According to the invention described in claim 5, in addition to the effect of the invention described in claim 4, the operation part (105a) of the arm operation restricting member (105) and the restricting part (105b) are configured to intersect vertically. When the operation portion (105a) is operated in a substantially parallel posture with respect to the support arm (102), the restriction portion (105b) is positioned at the rotation restriction position, so that the auxiliary placement member (101) is moved to the preliminary seedling stand ( 38), the operation portion (105a) does not protrude from the side of the support arm (102). Therefore, the arm movement restricting member (105) moves the operator. There is no hindrance and work efficiency is improved.

In addition, when the operation portion (105a) is operated in a substantially vertical posture with respect to the support arm (102), the arm portion (101) is moved when the restriction portion (105b) is positioned at the restriction release position. Since the operation restricting member (105) protrudes to the side of the support arm (102), the operator can grip the arm operation restricting member (105) when operating the arm operation restricting member (105), and the operability is improved. In addition, it is not necessary to separately prepare parts for operating the support arm (102), and the number of parts can be reduced.

  According to the invention described in claim 6, in addition to the effect of the invention described in any one of claims 1 to 5, the auxiliary mounting member (101) is arranged on the left and right spare seedling platforms (38, 38). Since the fertilizer can be replenished by setting fertilizer containers on the left and right sides of the fertilizer applicator (5), the time required for the replenishment of fertilizer is shortened and the work efficiency is improved.

Further, since the fertilizer can be input from both the left and right sides of the fertilizer application device (5), the operation of leveling the input fertilizer can be easily performed, and the work efficiency is improved.

And since the auxiliary seedlings loaded on the left and right auxiliary seedling platforms (38, 38) can be placed on the auxiliary mounting member (101) and moved to the vicinity of the seedling planting device (4), It is not necessary for the operator to move from the preliminary seedling placing stand (38) to the seedling planting device (4), and the labor of the operator is reduced.

It is a side view of the conventional seedling transplanter. It is a top view of the seedling transplanting machine of FIG. It is a side view of the auxiliary | assistant mounting member and support arm concerning embodiment of this invention. It is a side view of the auxiliary | assistant mounting member of FIG. 3, a support arm, and a reserve seedling stand. It is a front view of the auxiliary | assistant mounting member of FIG. 3, a support arm, and a preliminary seedling mounting stand. It is a top view of the member rear part when the auxiliary | assistant mounting member of FIG. 3 is rotated back. It is explanatory drawing of the arm operation | movement control member provided in the support arm of FIG. It is a top view of the floor step of a seedling transplanter. It is a front view of the seedling transplanting machine of FIG. It is explanatory drawing of the engine frame of a seedling transplanter. It is explanatory drawing of the manifold installed in the hydraulic valve of a seedling transplanter.

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings. In addition, it is called right and left and front and rear, respectively, in the forward direction of the seedling transplanter.

  As shown in FIGS. 1 and 2, the conventional seedling transplanting machine transmits a shifting power integrally with the traveling unit of the left and right front wheels 10 and the left and right rear wheels 11 and the engine 20. The transmission vehicle body 2 includes a transmission section such as a transmission case such as a transmission case, a left and right front wheel final case 13 that transmits and supports the left and right front wheels 10, and a left and right rear wheel gear case 18 that transmits and supports the left and right rear wheels 11. And a seedling planting device 4 for planting seedlings, which is provided at the rear portion of the traveling vehicle body 2 so as to be movable up and down by the lifting link mechanism 3.

  The power transmission path of the seedling transplanter is as follows. The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a belt transmission 21 and a hydraulic continuously variable transmission 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted.

  A part of the traveling power is transmitted to the front wheel final case 13 to drive the front wheel 10, and the rest is transmitted to the rear wheel gear case 18 to drive the rear wheel 11. The left and right front wheel final cases 13 transmit and support the left and right front wheels 10 on the side of the transmission case 12, and the left and right rear wheel gear cases 18 have axles that pivotally mount the left and right rear wheels 11 on the left and right sides of the body. It is provided so as to protrude to the side, and receives right and left shifting power from the transmission case 12.

  By operating a main speed change lever (not shown), the operator can continuously (steplessly) change the hydraulic continuously variable transmission 23 from the 9th forward position through the neutral position to the 6th reverse position. By operating a not-illustrated), the “road running mode” and the “planting work running mode” can be changed by a known auxiliary transmission in the gear transmission.

  Next, the external take-out power is transmitted to the planting clutch mechanism inside the planting clutch case 25 provided at the rear of the traveling vehicle body 2, and then transmitted to the seedling planting device 4 by the planting transmission shaft 26, and fertilizer transmission The mechanism 28 is transmitted to the fertilizer application 5. This seedling planting device 4 includes a transmission case 50 that receives power from the planting transmission shaft 26 at the rear of the machine body, and an operator supplies seedlings to the seedling mounting stand 51, and seedling planting arranged in parallel according to the planting condition. The seedlings placed with the tool 52 are planted in the field.

The configuration of the seedling planting device 4 is as follows.
The seedling planting device 4 provided at the rear of the traveling body 2 of the seedling transplanter shown in this case has a six-row planting structure, a seedling planting transmission case 50 that also serves as a frame, a mat seedling, and a left-and-right reciprocating movement. When the seedlings are fed one by one to the seedling outlets 51a,... And all the seedlings for one horizontal row are fed to the seedling outlets 51a,. , A seedling planting tool 52 for planting seedlings supplied to the seedling outlet 51a,..., A pair of left and right drawing markers 19 for drawing the aircraft path in the next process to the topsoil surface, and the like. In the lower part of the seedling planting device 4, a center float 55 is provided in the center, and side floats 56 are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55 and 56 in contact with the mud surface of the field, the floats 55 and 56 slide while leveling the mud surface, and the seedlings are planted on the ground level by the seedling planting tools 52. Planted. Each of the floats 55 and 56 is rotatably attached so that the front end side thereof moves up and down according to the unevenness of the soil surface, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor (see FIG. The planting depth of the seedling is always kept constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting device 4. A rotor 27 (27a, 27b), which is an example of a leveling device, is attached to the seedling planting device 4. The seedling mounting platform 51 is configured to slide in the left-right direction using a support roller 65a of a rectangular support frame 65 having a full width in the left-right direction and the up-down direction that supports the entire seedling planting device 4.

  The raising / lowering link mechanism 3 which raises / lowers the seedling planting apparatus 4 is a parallel link structure, and is provided with one upper link 40 and a pair of left and right lower links 41. These links 40 and 41 are rotatably attached to a rear-view portal-shaped rear frame 42 erected on the rear end portion of the main frame 15 on the base side, and a vertical link 43 is connected to the front end side thereof. A connecting shaft 44 that is rotatably supported by the seedling planting device 4 is inserted into and connected to the lower end portion of the vertical link 43, and the seedling planting device 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm integrally formed with the upper link 40. The upper link 40 is expanded and contracted by hydraulically extending the cylinder 46. It rotates up and down and the seedling planting device 4 moves up and down with a substantially constant posture. A potentiometer, which is a lift detection member, is arranged between the rear frame 42 and the upper link 40 and the lower link 41 to detect the raising or lowering of the seedling planting device 4.

The configuration around the seedling transplanter operator is as follows.
The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheel 10 is provided above the front cover 32. On the right side of the handle 34, a main transmission lever and a sub transmission lever (not shown) are provided below the main transmission lever. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on both the left and right sides of the lower end, and a saddle clutch pedal and the like are arranged. The floor step 35 is partly grid-like, and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  The fertilizer application device 5 is provided at the rear upper part of the traveling vehicle body 2 and feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by the feeding portions 61,..., And the fertilizer is floated by the fertilizer hoses 62,. Are guided to the fertilizer guides attached to the left and right sides of the fertilizer, and dropped into a fertilizer structure formed in the vicinity of the side portion of the seedling planting ridges 64,... Provided on the front side of the fertilizer guide. Air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hose 62 through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62 is forced by the wind pressure. It is designed to be transported.

  On both the left and right sides of the front part of the traveling vehicle body 2, spare seedling platforms 38, 38 on which replenishment seedlings are placed are provided so as to be pivotable between a position protruding laterally from the body and a position accommodated inside. The preliminary seedling mounts 38 and 38 are supported by a support frame 49 having a base side disposed below the floor step 35 of the traveling vehicle body 2.

The preliminary seedling stage 38 is configured in three stages by a parallel link mechanism composed of a plurality of moving link members, a first preliminary seedling mounting plate 38a, a second preliminary seedling mounting plate 38b, and a third preliminary seedling mounting plate 38c. Has been. In the preliminary seedling stage 38, the preliminary seedling mounting plates 38a, 38b, and 38c are arranged in the front-rear direction on substantially the same plane by the rotation of the parallel link mechanism and the preliminary seedling mounting plates 38a, 38b, and 38c. Are switched to the storage state arranged in the vertical direction overlapping in plan view. This switching is performed by the switching device 70. The switching device 70 is configured by an electric motor or the like, and is provided inside the case 71.

  FIG. 3 shows a side view of the auxiliary placement member 101 and the support arm 102 of the seedling transplanter according to the embodiment of the present invention. In FIG. 3, the auxiliary mounting member 101 is rotated forward from the left side of the drawing (one-dot chain line), in the center fixed position (solid line), and moved backward (two-dot chain line). Three embodiments are shown. FIG. 4 is a side view of FIG. 3 with the addition of the preliminary seedling stage 38, and FIG. 5 is a case where the auxiliary placement member 101 and the support arm 102 of the seedling transplanting machine of FIG. A front view is shown.

  The auxiliary placement member 101 is provided so as to be located above the preliminary seedling placement stand 38 when it is in the central fixed position. At this time, the upper surface of the auxiliary mounting member 101 is made horizontal. The auxiliary mounting member 101 has a plate shape made of hard plastic, and has a sufficient area for mounting the fertilizer container F, for example, and the fertilizer container F has a weight of about 20 kg. It has rigidity. Moreover, the fertilizer container F is provided with the frame board for preventing fall of the fertilizer container F in the both right and left ends of the auxiliary mounting member 101.

  The support arm 102 that supports the auxiliary mounting member 101 has a pair of front and rear structures including a front support arm 102a and a rear support arm 102b, and is rotatably fixed to the auxiliary mounting member 101 at its upper end U. Yes. Further, the lower ends of the two support arms 102a and 102b are respectively fixed to the support frame 49 of the preliminary seedling stage 38 so as to be rotatable by the front and rear pivot points 103a and 103b. The support arms 102a and 102b have a steel cylindrical structure and are provided on the inner side of the machine body from the preliminary seedling stage 38. And the front-rear interval of the upper end U is made wider than the front-rear interval between the front and rear rotation fulcrums 103a, 103b.

  The length of the support arm 102 is 1 m, and the auxiliary placement member 101 is at the height of the operator's eyes when an average height operator sits on the seat 31. The posture adjusting member 108 is fixed to the rear support arm 102b at a height of about 30 cm from the top. When the auxiliary placing member 101 is in the center fixed position, the posture adjusting member 108 is set to be horizontal. The posture adjusting member 108 contacts the front support arm 102a when the auxiliary mounting member 101 rotates forward or backward, and thus the optimal posture when the auxiliary mounting member 101 rotates forward or backward. Can be maintained.

  Since the auxiliary placement member 101 is positioned above the preliminary seedling stage 38, the fertilizer container F and the spare seedling can be placed in a place where the work is not hindered, so that the work efficiency is improved.

When the support arm 102 that supports the auxiliary mounting member 101 is rotated forward, the auxiliary mounting member 101 moves forward and tilts, so that the auxiliary mounting member 101 that protrudes forward from the machine body has a fertilizer container F and a spare. Since it becomes easy to load seedlings, it becomes easy to load the fertilizer container F and spare seedlings, and the work efficiency is improved.

Further, when the support arm 102 that supports the auxiliary placement member 101 is rotated backward, the auxiliary placement member 101 is rearwardly lowered and inclined, so that the fertilizer container 5 and the seedling planting device 4 are provided with a fertilizer container F and a spare. Since seedlings can be brought close to each other, it becomes easy to replenish fertilizers and seedlings, and work efficiency is improved.

  When the support arm 102 is rotated in the front-rear direction by configuring the front-rear distance between the upper ends U of the support arms 102a, 102b on which the auxiliary mounting member 101 is disposed to be wider than the front-rear distance between the rotation fulcrums 103a, 103b. Since the auxiliary mounting member 101 is in the forward-downward tilted posture or the backward-lowered tilted posture, it becomes easy to load and replenish the fertilizer container F and the spare seedling, and the work efficiency is improved.

When the auxiliary placing member 101 is positioned above the preliminary seedling placing table 38, the auxiliary placing member 101 is in a substantially horizontal posture with respect to the traveling vehicle body 2, so that the placed fertilizer container F and the spare seedling are The fall from the auxiliary placement member is prevented, and the work of picking up the fertilizer container F and the spare seedling becomes unnecessary.

  6 is a plan view showing a rear portion of the auxiliary mounting member 101 when the auxiliary mounting member 101 of FIG. 3 is rotated rearward, and FIG. 7 is an arm provided on the rear support arm 102b of FIG. An explanatory view of operation regulation member 105 is shown. FIG. 7A is a side view of the arm operation restricting member 105 as viewed from the inside of the body, and FIG. 7B is a back view of the arm operation restricting member 105 as viewed from the rear of the body.

  When the auxiliary placement member 101 is rotated rearward, the rear portion of the auxiliary placement member 101 is positioned above the hopper 60 of the fertilizer application device 5. Specifically, the front side 1/4 to 1/3 of the hopper 60 is configured to overlap the auxiliary placement member 101 in plan view. And it is set as the structure which provided the notch parts 104 and 104 in the substantially square shape in the right-and-left both ends of the rear part of the auxiliary | assistant mounting member 101. As shown in FIG.

  By providing the notch 104 at the rear of the auxiliary placement member 101, when the support arm 102 is rotated backward, the portion of the fertilizer container F that protrudes from the notch 104 of the auxiliary placement member 101 is When it is opened by cutting or the like, the fertilizer can be discharged from the release part. As a result, the fertilizer can be supplied to the fertilizer application device 5 without moving the fertilizer container F, so that the work efficiency is improved and the labor of the operator is reduced.

  In addition, when taking a spare seedling and moving it to the seedling planting part, the seedling can be manually taken from the notch 104, and the seedling plate is removed from the notch 104 and the auxiliary placement member 101 and the spare seedling. Therefore, the seedling planting device 4 can be easily replenished, and the work efficiency can be improved.

  The rear support arm 102 b is provided with an arm operation restricting member 105 together with the posture adjusting member 108. The arm operation restricting member 105 is rotatably fixed at a height of about 50 cm from the top. The arm operation restricting member 105 has a “<” shape and is configured such that the operation portion 105 a and the restricting portion 105 b intersect perpendicularly, and a rotation center is provided at the intersection. In order to make it easy for the operator of the seedling transplanter to operate from the seat 31, an operation portion 105a is provided toward the inside of the machine body.

  The preliminary seedling stage 38 is provided with a receiving member 106 for fixing the restricting portion 105b of the arm operation restricting member 105. The receiving member 106 is U-shaped and has a size that allows the restricting portion 105b to enter the inside of the U-shape, and opens on the upper side. The receiving member 106 is welded to the outside of the case 71 of the switching device 70 of the preliminary seedling table 38.

  A restriction projection 107 which is a parallel pin for restricting the rotation of the arm movement restriction member 105 is welded to the restriction portion 105 b of the arm movement restriction member 105. The restricting protrusion 107 is perpendicular to the restricting portion 105b.

  The rotation axis of the arm operation restricting member 105 is along the front-rear direction, and the arm operation restricting member 105 reciprocally rotates at a position where the operation portion 105a is parallel to the rear support arm 102b and a position where the operation portion 105a is perpendicular. In this case, when the operation part 105a is parallel to the rear support arm 102b, the restriction part 105b perpendicular to the operation part 105a is perpendicular to the rear support arm 102b and faces the outer side of the machine body. When it is perpendicular to the rear support arm 102b, it is parallel to the rear support arm 102b and its end faces upward.

  That is, when the operator operates the operation portion 105a in a posture substantially parallel to the rear support arm 102b, the restricting portion 105b is perpendicular to the rear support arm 102b and faces outward, and the U-shaped portion of the receiving member 106 In this case, the rotation of the support arm 102 and the like is restricted by the restriction portion 105b. Further, when the operation portion 105a is operated in a substantially vertical posture with respect to the rear support arm 102b, the restriction portion 105b becomes parallel to the rear support arm. In this case, the restriction is released and the support arm 102 and the like can be rotated. .

  When the operation portion 105a of the arm operation restriction member 105 is positioned perpendicular to the rear support arm 102b, the restriction protrusion 107 comes into contact with the rear support arm 102b, so that the operation portion 105a of the arm operation restriction member 105 is lowered. Can be prevented from rotating too much. Further, when the operation portion 105a of the arm operation restricting member 105 is positioned in parallel with the rear support arm 102b, it comes into contact with the receiving member 106 and prevents the rear support member 102b and the case 71 from contacting each other. .

  The support arm 102 is provided with an arm operation restricting member 105 that restricts the back and forth rotation of the support arm 102 so that the support arm 102 can rotate, and the preliminary seedling stage 38 is provided with a receiving member 106 for the restricting portion 105b of the arm operation restricting member 105. As a result, the back and forth rotation of the support arm 102 can be restricted in a state where the auxiliary placement member 101 is positioned above the preliminary seedling stand 38, so that the support arm 102 can be used during seedling planting work or the like. Can be prevented from moving back and forth and the auxiliary mounting member 101 is moved, and the work efficiency is improved.

Further, by providing a restriction protrusion 107 for restricting the rotational movement range of the arm movement restriction member 105 and having the restriction protrusion 107 come into contact with the receiving member 106, the support arm 102 is adjusted according to the weight of the fertilizer container or the spare seedling. Can be prevented from tilting to the side of the preliminary seedling stage 38, so that the situation where the support arm 102 does not rotate back and forth due to contact with the preliminary seedling stage 38 can be prevented. Yes.

Further, when the arm operation restricting member 105 is released, the restricting projection 107 comes into contact with the support arm 102 to restrict the operation of the arm operation restricting member 105 itself, thereby determining the rotation operation range of the arm operation restricting member 105. No need for any parts

  When the operating portion 105a and the restricting portion 105b of the arm operation restricting member 105 are vertically crossed and the operating portion 105a is operated in a substantially parallel posture with respect to the support arm 102, the restricting portion 105b is positioned at the rotation restricting position. Thus, when the auxiliary placing member 101 is in the rotation restricting position where the auxiliary seedling placing base 38 is positioned above, the operation portion 105a does not protrude from the side of the support arm 102. Therefore, the movement of the worker is not hindered, and the work efficiency is improved.

Further, when the operation portion 105a is operated in a substantially vertical posture with respect to the support arm 102, when the auxiliary placement member 101 is operated by the restriction portion 105b being positioned at the restriction release position, the arm operation restriction member 105 is moved to the support arm 102. Therefore, when operating the arm operation restricting member 105, the operator can grip the arm operation restricting member 105, improving the operability and separately preparing parts for operating the support arm 102. This is no longer necessary and the number of parts can be reduced.

  In the present embodiment, the state in which the fertilizer container F is placed on the auxiliary placement member 101 is shown, but there is no problem even if only the preliminary seedling is placed.

  Moreover, although the state which provided the auxiliary | assistant mounting member 101 in one side was shown, even if it provides in both sides, there is no problem. In this case, the auxiliary placement member 101 is provided on the left and right spare seedling stands 38, 38, respectively, so that the fertilizer can be replenished by setting the fertilizer containers on the left and right sides of the fertilizer application device 5. Time required for replenishment is shortened, and work efficiency is improved.

Further, since the fertilizer can be input from both the left and right sides of the fertilizer application device 5, the operation of leveling the input fertilizer can be easily performed, and the work efficiency is improved.

In addition, since the spare seedlings loaded on the left and right spare seedling platforms 38, 38 can be placed on the auxiliary mounting member 101 and moved to the vicinity of the seedling planting device 4, the operator can prepare the preliminary seedling platforms. It is not necessary to move from 38 to the seedling planting device 4, and the labor of the operator is reduced.

  The support arm 102 can be configured to be removable. In this case, the working mode of the seedling transplanter can be easily changed depending on the size of the field.

  FIG. 8 is a plan view of the floor step 35 of the seedling transplanter, and FIG. 9 is a front view of the seedling transplanter using the floor step 35 of FIG.

  In the present embodiment, the floor step 35 is divided into a right floor step 35a and a left floor step 35b. And the positioning convex part 110 of the front cover 32 is inserted in the recessed part provided in the front part of these floor steps 35a and 35b.

  Even when the floor step 35 is divided to facilitate maintenance, the positioning steps 110 provided on the front cover 32 are provided, and these are inserted into the recesses of the floor steps 35a and 35b, so that the floor steps 35a and 35b are provided. And positioning of the front cover 32 becomes easy.

  FIG. 10 is a side view showing the configuration of the engine frame. FIGS. 10A and 10B show different configuration proposals.

  By providing a plurality of truss frames 110... Between the engine 20, the mission case 12, and the main frame 15, the rigidity of the frame can be secured while reducing the weight of the seedling transplanter.

  FIG. 11 shows an external view of the proportional valve 112 for driving the lifting hydraulic cylinder 46 for lifting the seedling planting device 4. FIG. 11A is a front view, and FIG. 11B is a plan view. Since the proportional valve 112 is fixed to the manifold 113, the piping can be taken out from the side surface of the manifold 113, and the connection work with the lifting hydraulic cylinder 46 and the like becomes easy.

  A relief valve 114 is directly connected to the side surface of the manifold 113. By connecting directly, there is no need to connect a separate relief valve, and piping parts can be reduced.

  A cartridge filter 115 is connected to the bottom surface of the manifold 113 with a double screw plug 116. There is no need to connect a separate cartridge filter, and piping parts can be reduced.

  A filter 118 is provided in the hydraulic inlet hole of the manifold 113. The filter 118 is fixed by pressing a collar 117 having an outer diameter matching the inner diameter of the inflow hole against the base of the filter 118. By providing the filter 118, the cleanliness of the flowing oil can be increased.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 4 Seedling planting device 5 Fertilizer 38 Preliminary seedling platform 101 Auxiliary mounting member 102 Support arm 102a Front support arm 102b Rear support arm 103a Front rotation fulcrum 103b Rear rotation fulcrum 104 Cutting Notch portion 105 Arm operation restriction member 105a Operation portion 105b Restriction portion 106 Receiving member 107 Restriction protrusion U Upper end portion

Claims (6)

A seedling planting device (4) that is movable up and down to the rear of the traveling vehicle body (2);
A fertilizer application device (5) for supplying fertilizer to seedlings planted in the rear upper part of the traveling vehicle body (2);
In the seedling transplanting machine provided with a preliminary seedling mount (38) for loading the preliminary seedling on the front part of the traveling vehicle body (2),
An auxiliary placement member (101) for loading spare seedlings and fertilizer containers is disposed above the preliminary seedling placing table (38),
A support arm (102) for supporting the auxiliary mounting member (101);
When the support arm (102) is rotated forward, the auxiliary mounting member (101) is inclined forwardly and tilted,
A seedling transplanting machine characterized in that when the support arm (102) is rotated rearward, the auxiliary mounting member (101) is in a rear-falling inclined posture. The rotation fulcrums (103a, 103b) of the support arms (102a, 102b) arranged at the front and rear are arranged below the preliminary seedling stage (38),
The auxiliary mounting member (101) is installed on the upper end (U) of the front and rear support arms (102a, 102b),
The front-rear distance between the upper ends (U) of the front and rear support arms (102a, 102b) is made wider than the front-rear distance between the rotation fulcrums (103a, 103b),
When the front and rear support arms (102a, 102b) are rotated forward, the auxiliary placement member (101) is in a forward-lowering inclined posture,
The seedling transplanter according to claim 1, wherein when the front and rear support arms (102a, 102b) are rotated rearward, the auxiliary placement member (101) is in a rearward downward tilting posture.   The seedling transplanter according to claim 1 or 2, wherein a notch (104) is provided at the rear of the auxiliary mounting member (101). The support arm (102) includes
An arm operation restricting member (105) for restricting the forward and backward rotation of the support arm (102) is rotatably provided,
The arm operation restricting member (105) is composed of an operation part (105a) facing the inside of the machine body and a restricting part (105b).
The restricting portion (105b) is provided with a restricting protrusion (107) for restricting the rotational movement range of the arm operation restricting member (105), and
The preliminary seedling stage (38) is provided with a receiving member (106) of the restricting portion (105b) of the arm operation restricting member (105),
The seedling transplanter according to any one of claims 1 to 3, wherein the receiving protrusion (107) is in contact with the restricting protrusion (107). The operation part (105a) and the restriction part (105b) of the arm movement restricting member (105) intersect vertically.
When the operation part (105a) is operated in a posture substantially parallel to the support arm (102),
The restriction portion (105b) is located at the rotation restriction position,
When the operation portion (105a) is operated in a substantially vertical posture with respect to the support arm (102),
The seedling transplanter according to claim 4, wherein the restriction portion (105b) is located at a restriction release position. The preliminary seedling platforms (38, 38) are respectively arranged on the left and right sides of the front side of the traveling vehicle body (2),
The support arms (102, 102) of the auxiliary placement members (101, 101) are provided on the inner sides of the preliminary seedling stands (38, 38), respectively, so as to be able to rotate back and forth. The seedling transplanter according to any one of claims 5 to 6.

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