JP2020115772A - Seedling transplanter - Google Patents

Abstract

To provide a seedling transplanter capable of easily supplying a seedling tray to a preliminary seedling frame.SOLUTION: A seedling transplanter comprises: a travel vehicle body; a seedling tray transport part; a seedling planting part; a seedling tray collection part; a preliminary seedling frame; a suspension mechanism; and a lifting device. The travel vehicle body is supported to a frame comprising wheels. The seedling tray transport part is provided on a rear part of the travel vehicle body and transports a seedling tray storing a pot seedling. The seedling planting part is provided in a halfway of the seedling tray transport part and plants the pot seedling taken out from the seedling tray to a farm field. The seedling tray collection part is provided proximate to a termination part of the seedling tray transport part, and collects a seedling tray from which the pot seedling is taken out and which is empty. The preliminary seedling frame is attached to the frame and mounts thereon a preliminary seedling tray storing the pot seedling. The suspension mechanism is provided between the wheel and the frame. The lifting device is provided above or below the suspension mechanism, lifts up the frame for changing a height of the travel vehicle body.SELECTED DRAWING: Figure 3

Description

The present invention relates to a seedling transplanter.

Conventionally, the traveling vehicle body, the seedling tray transport unit that transports the seedling tray, the planting unit that takes out the pot seedlings from the seedling tray and plant them, the seedling tray collection unit that collects the empty seedling trays, and the pot seedlings There is a seedling transplanting machine provided with a spare seedling frame on which a stored spare seedling tray is placed (for example, refer to Patent Document 1).

A plurality of pot seedlings are arranged in a matrix on the seedling tray, the seedling tray transfer section is arranged at the rear of the traveling vehicle body, and the planting section is provided in the middle of the seedling tray transfer section. While the plants are being transported, the pot seedlings are taken out from the seedling tray and planted in the field. In addition, the seedling tray collecting unit is provided near the terminal end of the seedling tray transporting unit in order to collect the seedling tray that has been emptied after the pot seedlings have been taken out by the planting unit. Further, the spare seedling frame is capable of mounting a plurality of spare seedling trays in which pot seedlings are stored, and is provided on both front portions of the traveling vehicle body.

JP, 2018-191526, A

However, placing seedling trays containing a large number of pot seedlings in a plurality of stages in a preliminary seedling frame in a stacked state is a difficult task because the seedling trays are relatively heavy. This is especially true for the elderly and the weak.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seedling transplanting machine that can easily supplement a seedling tray with a spare seedling frame.

In order to solve the above problems and achieve the object, the seedling transplanting machine (1) according to claim 1, a traveling vehicle body (2) supported by a frame (6) having wheels (3), A seedling tray transfer unit (210) attached to the rear part of the traveling vehicle body (2) for transferring a seedling tray (50) containing pot seedlings from a starting end to an end, and the seedling tray transfer unit (210). The seedling planting section (220), which is provided midway and takes out the potted seedlings from the seedling tray (50) and plants the taken-out potted seedlings in the field, is close to the terminal portion of the seedling tray transfer section (210). And a seedling tray collecting section (300) for collecting the seedling tray (50) emptied by taking out the pot seedlings by the seedling planting section (220) and attached to the frame (6), A spare seedling frame (15) for loading a spare seedling tray (50) containing the pot seedlings, a suspension mechanism (85) provided between the wheel (3) and the frame (6), An elevating device (80) provided above or below the suspension mechanism (85) for elevating and lowering the frame (6) to change the height of the traveling vehicle body (2).

The seedling transplanting machine (1) according to claim 2, wherein the lifting device (80) comprises a hydraulic cylinder (87) or an air cylinder (87) for lifting and lowering the frame (6). Characterize.

The seedling transplanting machine (1) according to claim 3 is the seedling transplanting machine (1) according to claim 1 or 2, wherein the elevating device (80) causes pressure oil to act inside a casing (81) that houses the suspension mechanism (85). The frame (6) can be moved up and down together with the casing.

The seedling transplanter (1) according to claim 4 is the seedling transplanter according to any one of claims 1 to 3, wherein the lifting device (80) compresses a spring (851) constituting the suspension mechanism (85). It is characterized by comprising a suspension compression mechanism capable of changing the height of the traveling vehicle body (2).

The seedling transplanter (1) according to claim 5, wherein the lifting device (80) is a transmission shaft for transmitting power from a mission case (7) to the wheels (3) according to any one of claims 1 to 4. A wheel swinging mechanism (96) capable of swinging the wheel (3) is provided for each casing (81) accommodating the suspension mechanism (85) around (862).

The seedling transplanter (1) according to claim 6, wherein the switch (88) for operating the elevating device (80) according to any one of claims 1 to 5, is provided on the traveling vehicle body (2). It is characterized in that it is provided in the vicinity of the seat (10).

According to the seedling transplanter according to claim 1, since the frame is provided with an elevating device that can elevate and lower the frame, in addition to the suspension mechanism that absorbs the impact transmitted from the field to the traveling vehicle body via the wheels. The height of the spare seedling frame provided can be adjusted, and the seedling tray can be easily replenished with the spare seedling frame.

According to the seedling transplanter described in claim 2, in addition to the effect of the invention described in claim 1, the lifting device can be configured by a simple mechanism using an air cylinder or a hydraulic cylinder.

According to the seedling transplanter described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the traveling vehicle body can be reliably moved up and down by the force of hydraulic pressure.

According to the seedling transplanter described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the suspension hardness of the suspension is adjusted according to the situation of the field by the compression amount of the spring of the suspension. It can also be adjusted. The height adjustment range of the frame can be expanded up to the compression amount of the suspension spring.

According to the seedling transplanter described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, the height adjustment range of the frame is widened according to the amount of front and rear swing of the wheel. You can

According to the seedling transplanter according to claim 6, in addition to the effect of the invention according to any one of claims 1 to 5, the height of the preliminary seedling frame can be adjusted from the pilot seat with one touch. ..

FIG. 1 is a side view of the seedling transplanter according to the embodiment. FIG. 2 is a plan view of the above seedling transplanter. FIG. 3: is explanatory drawing which shows typically the 1st example of the raising/lowering device with which the seedling transplanter same as the above is equipped. FIG. 4: is explanatory drawing which shows typically the 2nd example of the raising/lowering apparatus with which the seedling transplanter same as the above is equipped. FIG. 5: is explanatory drawing which shows typically the 3rd example of the raising/lowering device with which the seedling transplanter same as the above is equipped. FIG. 6: is explanatory drawing which shows typically the 4th example of the raising/lowering apparatus with which the seedling transplanter same as the above is equipped. FIG. 7: is explanatory drawing which shows typically the 5th example of the raising/lowering device with which the seedling transplanter same as the above is equipped. FIG. 8: is explanatory drawing which shows typically the 6th example of the raising/lowering device with which the seedling transplanter same as the above is equipped. FIG. 9: is explanatory drawing which shows typically the 7th example of the raising/lowering apparatus with which the seedling transplanter same as the above is equipped. FIG. 10: is explanatory drawing which shows typically the 8th example of the raising/lowering device with which the seedling transplanter same as the above is equipped. FIG. 11: is explanatory drawing which shows typically the rail rotation amount adjustment mechanism of the seedling tray collection part in the seedling transplanter same as the above. FIG. 12: is explanatory drawing which shows typically the position adjustment mechanism of the cage|basket part of the seedling tray collection part in the seedling transplanter same as the above.

The seedling transplanter according to the present embodiment will be described as a riding rice transplanter for eight-row planting with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter 1 which is a seedling transplanting machine according to this embodiment, and FIG. 2 is a plan view of the riding rice transplanter 1.

As shown in FIG. 1, a passenger rice transplanter 1 includes a pair of left and right front wheels 3 and 3 and a pair of left and right rear wheels 4 and 4, and is a four-wheel-drive traveling vehicle body 2; The planting apparatus 200 is connected to the rear side so as to be able to move up and down via a lifting link device 30. Further, a main body portion of the fertilizer application device 40 is provided on the upper rear side of the traveling vehicle body 2, and water tanks 41, 41 are provided on the left and right sides of the traveling vehicle body 2 in front of the fertilizer application device 40. Further, line drawing markers 42, 42 are provided near the water tanks 41, 41.

Further, the engine 5 is mounted on the vehicle body frame 6 that supports the traveling vehicle body 2, and the rotational power of the engine 5 is transmitted through a hydrostatic stepless transmission called HST (Hydro Static Transmission) or the like to a transmission case. It is transmitted to an auxiliary transmission mechanism (not shown) and the like in 7. The rotational power that has been changed in speed in the transmission case 7 is separately output as traveling power used for the traveling system and the like and external extraction power used for the planting device 200 and the like.

A part of the traveling power is transmitted to the left and right front wheel final cases 81, 81 to drive the front wheels 3, 3, and the rest is transmitted to the left and right rear wheel gear cases 9, 9 to drive the rear wheels 4, 4. Further, a part of the rotational power transmitted to the left rear wheel gear case 9 is transmitted to the leveling rotor drive shaft 101, and rotates the leveling rotor 100 described later.

By the way, the upper part of the engine 5 is covered with an engine cover 13, and the cockpit 10 is installed on the engine cover 13. A steering handle 11 for steering the front wheels 3 is provided in front of the cockpit 10, and the front side thereof is covered with a front cover 12. Further, horizontal floor steps 14 are provided on the left and right sides of the lower ends of the engine cover 13 and the front cover 12.

By the way, on a side surface of the steering column 110 that supports the steering handle 11, an elevating switch 88 for operating an elevating device 80 (which will be described in detail later) that elevates the vehicle body frame 6 is provided.

Further, on the left and right sides of the steering handle 11 and the front cover 12, there are arranged preliminary seedling frames 15 on which a plurality of seedling trays 50, for example, about 4 sheets can be stacked in multiple stages. Therefore, while the operator takes out the seedling tray 50 previously placed on the preliminary seedling frame 15, the operator carries it out to the seedling tray transporting section 210 of the planting apparatus 200 connected to the rear portion and transports it. It can be replenished sequentially from the beginning of the path 201. In the seedling tray 50, pot seedlings grown in advance in a pot are stored in a matrix.

The transport path 201 is configured to sequentially transport one seedling tray 50 per two planting rows and supply pot seedlings to each seedling planting section 220 described later to perform two-row planting. Therefore, in the riding rice transplanter 1 for eight-row planting, the transport paths 201, the seedling planting portions 220, and the like are provided in the lateral direction in the plan view (see FIG. 2).

The planting apparatus 200 includes a seedling tray transporting unit 210, a seedling planting unit 220, and a seedling tray collecting unit 300 that sequentially collects empty seedling trays 50. The seedling tray transport unit 210 transports the successively supplied seedling trays 50 from the upstream side to the downstream side of the transport path 201. The seedling planting section 220 is provided in the middle of the seedling tray transporting section 210, and takes out pot seedlings from the transported seedling tray 50 to plant in the field. The seedling tray collecting unit 300 sequentially collects the empty seedling trays 50 taken out from the terminal end of the seedling tray transporting unit 210 after the pot seedlings are taken out by the seedling planting unit 220.

The planting of pot seedlings by the seedling planting unit 220 is performed as follows. That is, the push-out pins are simultaneously inserted from the bottom side into the seedling raising pots in the horizontal row of the seedling tray 50 to push out the pot seedlings. The pushed horizontal row of pot seedlings are conveyed halfway in the right and left directions by the left and right seedling feeding belts, and are planted rotatably below the left and right sides of the seedling feeding belt. By rotating the claws 221, the pot seedlings conveyed to the left and right sides by the seedling feeding belt are sequentially planted in the field.

Further, as shown in FIGS. 1 and 2, a float 230 is provided below each seedling planting section 220. These floats 230 slide while leveling the mud surface, and pot seedlings are planted by the planting claws 221 on the leveling marks.

As described above, in the riding rice transplanter 1 according to the present embodiment, which is provided with the spare seedling frame 15 for loading a plurality of spare seedling trays 50 containing pot seedlings on the front left and right sides of the traveling vehicle body 2, The specific configuration is that it includes an elevating device 80 that elevates the vehicle body frame 6 that supports the traveling vehicle body 2 to change the height of the traveling vehicle body 2.

Hereinafter, some aspects of the lifting device 80 will be described with reference to FIGS. 3 to 10. 3 to 10, the same constituent elements having the same function are designated by the same reference numerals, and a detailed description thereof will be omitted.

FIG. 3 is an explanatory diagram showing a first example of the lifting device 80 included in the riding rice transplanter 1 according to the present embodiment. As shown in FIG. 3, the front wheels 3 of the passenger rice transplanter 1 receive power from the transmission case 7 and rotate. That is, the passenger rice transplanter 1 includes front wheel final cases 81, 81 that receive the traveling power output from the transmission case 7, and the front wheel final case 81 includes a kingpin shaft 82 that is vertically slidably arranged. An upper case 811 that covers the upper part and a lower case 812 that is slidably connected to the upper case 811 below the kingpin shaft 82 and that houses a second input bevel gear 802 that is an axle-side transmission gear are provided. I have it.

The upper case 811 is connected with a horizontal case 810 that houses a transmission shaft 862 that transmits the power of the transmission case 7 to the front wheels 3. The transmission shaft 862 is interlockingly connected to the output shaft 861 whose base end projects from the transmission case 7 through the spline mechanism 86, and has the first output bevel gear 83 at the other end. The first output bevel gear 83 meshes with the first input bevel gear 84 provided on the upper portion of the kingpin shaft 82.

A second output bevel gear 801 is provided on the tip end side of the kingpin shaft 82, and the second output bevel gear 801 and the second input bevel gear 802 provided on the axle 800 of the front wheel 3 are provided. Meshing. With this configuration, the power that is rotationally driven by the engine 5 via the transmission case 7 is the transmission shaft 862→first output bevel gear 83→first input bevel gear 84→king pin shaft 82→second output bevel gear. 801→second input bevel gear 802→axle 800→front wheel 3 is transmitted.

Further, the upper case 811 of the front wheel final case 81 is provided with a spring 851 as a suspension mechanism 85 for absorbing the vertical movement of the front wheel 3 due to the unevenness of the field. The spring 851 is arranged so as to surround the kingpin shaft 82. As shown, the kingpin shaft 82 and the axle 800 are rotatably supported by bearings 804.

In the above configuration, the lifting device 80 that changes the height of the traveling vehicle body 2 includes a hydraulic cylinder or an air cylinder that raises and lowers the vehicle body frame 6. Hereinafter, the hydraulic cylinder or the air cylinder will be generically referred to as a cylinder mechanism 87. The cylinder mechanism 87 is driven by operating an elevating switch 88 provided on the steering column 110.

As shown in FIG. 3, in the first example of the lifting device 80, the cylinder mechanism 87 is provided at the upper end portion of the upper case 811 of the front wheel final case 81, and the cylinder mechanism 87 and the vehicle body frame 6 are connected to each other. That is, by operating the cylinder mechanism 87, the body frame 6 that supports the traveling vehicle body 2 is moved up and down.

In addition, here, the vehicle body frame 6 is formed to have a crank shape in a sectional view by the side frame portion 600 connected to the cylinder mechanism 87 and the central frame portion 601 located at a position higher than the side frame portion 600. ing. Although the transmission case 7 is fixed to the front wheel final case 81 side separately from the vehicle body frame 6, the transmission case 7 may be mounted on the vehicle body frame 6.

FIG. 4 is an explanatory diagram showing a second example of the lifting device 80 included in the riding rice transplanter 1. In the example shown in FIG. 4, the central frame portion 601 of the vehicle body frame 6 shown in FIG. 3 is bent downward to form a bent portion 601a shown in FIG. Connected to. With this configuration, when the vehicle body frame 6 is moved up and down, the transmission case 7 is also moved up and down together with the traveling vehicle body 2. In this case, as shown in the drawing, the transmission case 7 and the axle 800 of the front wheel 3 may be linked and coupled by a universal transmission shaft 800A having a universal joint.

Further, since the axle shaft 800 and the transmission case 7 are directly connected by the universal transmission shaft 800A corresponding to the transmission shaft 862 described above, the lifting device 80 according to the first example shown in FIG. 3 is provided. Unlike the riding rice transplanter 1, the transmission shaft 862 housed in the horizontal case 810 is unnecessary. Further, the front wheel final case 81 may be only a casing, and for example, the kingpin shaft 82, the first output bevel gear 83, the first input bevel gear 84, and the second input bevel gear 84 which are housed in the front wheel final case 81 in FIG. The output bevel gear 801 and the second input bevel gear 802 can be eliminated. In this case, it is preferable that the cylinder mechanism 87 can also be used as the suspension mechanism 85 for absorbing the vertical movement of the front wheels 3 due to the unevenness of the field, or another suspension mechanism is appropriately provided.

FIG. 5: is explanatory drawing which shows the 3rd example of the raising/lowering apparatus 80 with which the riding rice transplanter 1 is equipped. The lifting device 80 in this example is configured so that the front wheel final case 81 itself can be moved up and down by hydraulic control instead of the cylinder mechanism 87 shown in FIG. That is, a partition wall 813 that partitions the upper case 811 and the lower case 812, which are slidably connected to each other, into two hermetically sealed spaces is provided, and hydraulic oil is supplied to the lower space mainly composed of the lower case 812. Fill. The partition wall 813 is provided on the upper case 811 side.

Then, one end of each of the oil supply hose 91b and the discharge hose 91a for operating oil is connected to the lower case 812, and the upper case 811 is moved up and down by controlling the hydraulic pressure in the lower space mainly including the lower case 812. By doing so, the body frame 6 can be raised and lowered.

Here, since the second output bevel gear 801 provided at the tip of the kingpin shaft 82 also rises and falls in conjunction with the elevation of the upper case 811, the teeth of the tooth row of the second input bevel gear 802 provided on the axle 800 are shown. Is longer than the example shown in FIG.

Next, a configuration which is a modification of the third example will be described. FIG. 6 is an explanatory view schematically showing a fourth example of the lifting device 80 provided in the riding rice transplanter 1. In the example shown in FIG. 5, as described above, the tooth portion of the tooth row of the second input bevel gear 802 provided on the axle 800 is made longer than that in the example shown in FIG. However, here, as shown in FIG. 6, the length of the tooth portion of the second input bevel gear 802 provided on the axle 800 is not changed and the second output shaft provided at the tip of the kingpin shaft 82 is not changed. The tooth portion of the tooth row 801a of the bell gear 801 is lengthened.

Next, the lifting device 80 according to the fifth example will be described. FIG. 7: is explanatory drawing which shows typically the 5th example of the raising/lowering apparatus 80 with which the riding rice transplanter 1 is equipped. As shown in the drawing, the spline portion 805, which is provided on the tip end side of the kingpin shaft 82 and meshes relatively slidably with the second output bevel gear 801, has a spline portion 805 more than the tooth row portion of the second output bevel gear 801. The compression spring 89 is formed above the second output bevel gear 801 and is long.

As described above, the lifting device 80 (see FIGS. 5 to 7) according to the third to fifth examples applies the pressure oil to the inside of the front wheel final case 81 that houses the suspension mechanism 85, and the front wheel final case 81. The body frame 6 is moved up and down. Therefore, by the compression amount of the spring 851 of the suspension mechanism 85, the hardness of the suspension mechanism 85, that is, the degree of shock absorption can be adjusted according to the situation in the field. In addition, the height adjustment range of the vehicle body frame 6 can be expanded up to the compression amount of the spring 851 of the suspension mechanism 85.

By the way, in the hydraulic control applied in the third to fifth examples, the space filled with the hydraulic oil is the lower space mainly composed of the lower case 812, but may be the upper space mainly composed of the upper case 811. In either case, the vehicle body frame 6 can be moved up and down relative to the front wheels 3.

Further, in any case, the lifting device 80 functions as a suspension compression mechanism capable of changing the height of the traveling vehicle body 2 low by compressing the spring 851 that constitutes the suspension mechanism 85. It should be noted that instead of the lifting device 80 also functioning as the suspension compression mechanism as in the present embodiment, a suspension compression mechanism that works in conjunction with the lifting device 80 and compresses the spring 851 may be provided separately.

FIG. 8: is explanatory drawing which shows typically the 6th example of the raising/lowering apparatus 80 with which the rice transplanter 1 is equipped. This can be said to be a modification of the second example shown in FIG. 4, and the driving force of the front wheels 3 is obtained not from the transmission case 7 but from an independent electric motor 95.

As shown in FIG. 8, the base end of the axle 800 having the front wheel 3 attached to the front end is interlocked with the electric motor 95. In this case, there is no mechanical connection between the transmission case 7 provided on the side of the vehicle body frame 6 located above the cylinder mechanism 87 and the axle 800 located below the cylinder mechanism 87. Therefore, the transmission case 7 can be moved up and down together with the body frame 6 more smoothly.

FIG. 9: is explanatory drawing which shows typically the 7th example of the raising/lowering apparatus 80 with which the riding rice transplanter 1 is equipped. In the lifting device 80 (see FIG. 8) according to the sixth example, the cylinder mechanism 87 is provided at the upper end portion of the upper case 811 of the front wheel final case 81. Here, as shown in FIG. 9, a cylinder mechanism 87 is provided between the lower end of the upper case 811 and the upper end of the lower case 812 of the front wheel final case 81. Even with such a configuration, the body frame 6 supporting the traveling vehicle body 2 can be moved up and down by operating the cylinder mechanism 87.

FIG. 10: is explanatory drawing which shows typically the 8th example of the raising/lowering apparatus 80 with which the rice transplanter 1 is equipped. As shown in FIG. 10, here, the lifting device 80 is provided with a hydraulic cylinder 96 as a wheel swing mechanism capable of swinging the front wheels 3.

That is, the lifting device 80 is capable of swinging the front wheel 3 with the front wheel final case 81 housing the suspension mechanism 85 around the transmission shaft 862 that transmits power from the transmission case 7 to the front wheel 3. Equipped with.

As shown, one end of the hydraulic cylinder 96 is rotatably connected to the vehicle body frame 6, and the other end is rotatably connected to the front wheel final case 81.

With this configuration, by operating the hydraulic cylinder 96, as shown by an arrow A in the figure, the front wheel final case 81 rotates about the transmission shaft 862, and the front wheel 3 corresponding to the rotated position of the front wheel 3 is rotated. The traveling vehicle body 2 moves up and down by the amount of height change H.

In addition, in the example shown in FIG. 10, the swing of the front wheel 3 is configured to rotate forward from the reference position around the transmission shaft 862, but the hydraulic pressure is adjusted so as to rotate rearward from the reference position. The cylinder 96 can also be arranged.

Further, as the wheel swing mechanism, for example, an electric motor can be used instead of the hydraulic cylinder 96, and the front wheel 3 may be swingable forward or backward by the electric motor.

Further, as the lifting device 80, for example, instead of using the cylinder mechanism 87, the electric motor 95, the hydraulic cylinder 96, and the like described above, the traveling vehicle body 2 is lifted and lowered simply by increasing or decreasing the amount of air filled in the tires of the front wheels 3. It can also be done.

By the way, operations of various mechanisms functioning as the lifting device 80, for example, the above-described cylinder mechanism 87, the electric motor 95, the hydraulic cylinder 96, and the like are controlled via a predetermined control device (not shown). Then, these operations are started by operating the elevating switch 88 provided on the steering column 110.

Next, the seedling tray collecting section 300 (see FIG. 1) will be described with reference to FIGS. 11 and 12. 11: is explanatory drawing which shows typically the rail rotation amount adjustment mechanism of the seedling tray collection part 300 in the riding rice transplanter 1, FIG. 12 shows the position adjustment mechanism of the cage part of the seedling tray collection part 300 typically. FIG.

As shown in FIG. 1, the basic structure of the seedling tray collecting section 300 is provided at a lower front position in the seedling tray transporting section 210, and an empty seedling tray sent out from the end of the seedling tray transporting section 210. 50 can be sequentially recovered.

In addition, the seedling tray collecting section 300 includes a basket section 350 that receives an empty seedling tray 50, as shown in FIGS. 1 and 11. The basket portion 350 is formed in a basket shape by a wire material such as an iron wire, and can sequentially receive and store the falling seedling trays 50. And at least the front side is opened so that the housed seedling tray 50 can be pulled out from the front.

In addition, as shown in FIG. 11, the seedling tray collecting unit 300 is provided with a rail pushing plate 334 that rotates upon receiving the empty seedling tray 50 on the upper portion of the basket 350. The seedling tray 50 is sequentially dropped into the cage 350 by rotating the rails 330 provided on the left and right upper edge portions of the cage 350.

However, the rail 330 is rotated too much and the rail push-up plate 334 is lowered too much to receive the empty seedling tray 50 to be conveyed next, and the storage work of the seedling tray 50 is delayed, The seedling tray 50 may be clogged.

Therefore, as shown in FIG. 11, an adjuster bolt 301 serving as a stopper is provided in order to regulate the amount of rotation of the rail 330, which has not been regulated at all until now, and the rail 330 is provided only until it comes into contact with the tip of the adjuster bolt 301. Was made rotatable.

Therefore, the amount of rotation of the rail 330 can be regulated to an appropriate angle, so that the seedling tray 50 can be collected smoothly.

Further, the seedling tray collecting unit 300 in the present embodiment is configured such that the basket 350 can be moved in the front-rear direction, as shown by an arrow B in FIG. Then, as shown in the figure, the basket attachment portion 361 is provided with a plurality of positioning holes 360 at predetermined intervals along the moving direction of the basket 350, and a fastener such as a hairpin is inserted into the positioning holes 360. Then, it can be positioned and fixed. Note that, in FIG. 12, a portion indicated by reference numeral 351 is a handle of the basket portion 350, and the basket portion 350 can be moved back and forth by gripping the handle 351.

By the way, as shown in FIG. 1, the basket 350 in the seedling tray collecting section 300 described above is provided with a tray sensor S which is a detecting section for detecting that a predetermined number of the seedling trays 50 are stored. In the riding rice transplanter 1 according to the present embodiment, the tray sensor S is provided on the rear side of the basket 350, and when the tray sensor S detects that the number of the seedling trays 50 accommodated reaches the specified capacity, the tray sensor S becomes empty. A buzzer sound for urging the operator to collect the seedling tray 50 is emitted by a buzzer device BZ provided near the steering handle 11. The buzzer device BZ can be configured to ring during the operation of the above-described lifting device 80 or when the operating state is notified.

As described above, in the riding rice transplanter 1 according to the embodiment, the lifting device 80 capable of raising and lowering the vehicle body frame 6 is provided separately from the suspension mechanism 85 that absorbs a shock or the like transmitted from the field to the traveling vehicle body 2 via the front wheels 3. Equipped with. Therefore, the height of the spare seedling frame 15 provided on the vehicle body frame 6 can be adjusted, and, for example, even a person having no strength can easily supplement the spare seedling tray 50 with the spare seedling frame 15. Is possible.

Moreover, the above-mentioned riding rice transplanter 1 is adapted to transplant pot seedlings to a field. Therefore, it can be suitably used for transplantation of, for example, onions.

The following riding rice transplanter 1 is realized from the embodiment described above.

(1) A traveling vehicle body 2 supported by a vehicle body frame 6 having front wheels 3 and a seedling tray transporter which is attached to the rear portion of the traveling vehicle body 2 and transports a seedling tray 50 containing pot seedlings from a starting end portion to an end portion. The part 210 and the seedling tray conveying part 210 are provided in the middle, and the pot seedlings are taken out from the seedling tray 50, and the seedling planting part 220 for planting the taken out pot seedlings in the field is close to the terminal part of the seedling tray conveying part 210. And a spare seedling tray 50 that is attached to the vehicle body frame 6 and stores pot seedlings. A spare seedling frame 15 for loading the vehicle, a suspension mechanism 85 provided between the front wheels 3 and the vehicle body frame 6, and an upper or lower portion of the suspension mechanism 85. The rice transplanter 1 including a lifting device 80 for changing the height.

(2) In the configuration of (1) above, the riding rice transplanter 1 in which the lifting device 80 includes a cylinder mechanism 87 such as a hydraulic cylinder or an air cylinder that lifts and lowers the vehicle body frame 6.

(3) In the configuration of (1) or (2) above, the lifting device 80 applies pressure oil to the inside of the front wheel final case 81 that houses the suspension mechanism 85, and the front wheel final case 81 and the vehicle body frame 6 together. Passenger rice transplanter 1 that can be raised and lowered.

(4) In the configuration according to any one of (1) to (3) above, the lifting device 80 includes a suspension compression mechanism capable of changing the height of the traveling vehicle body 2 by compressing the spring 851 forming the suspension mechanism 85. Passenger rice transplanter 1.

(5) In any one of the configurations (1) to (4), the lifting device 80 includes a front wheel final housing the suspension mechanism 85 around the transmission shaft 862 that transmits power from the transmission case 7 to the front wheels 3. The rice transplanter 1 including a case 81 and a hydraulic cylinder 96 capable of swinging the front wheels 3.

(6) In the configuration according to any one of (1) to (5) above, an elevator switch 88 for operating the elevator 80 is provided in the vicinity of the cockpit 10 provided on the traveling vehicle body 2 for the riding rice transplanter 1 ..

The above-described embodiments are merely examples, and are not intended to limit the scope of the invention. Further effects and modifications derived from the above-described embodiment can be easily derived by those skilled in the art. The embodiment can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the spirit of the invention. Also, specifications (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) of each configuration, shape, display element, etc. are changed as appropriate. Can be carried out.

1 Riding rice transplanter (seedling transplanter)
2 Traveling vehicle 6 Body frame 7 Transmission case 10 Pilot seat 15 Spare seedling frame 50 Seedling tray 80 Lifting device (suspension compression mechanism)
81 Front wheel final case (casing)
85 Suspension mechanism 87 Cylinder mechanism (hydraulic cylinder, air cylinder)
88 Lift switch 96 Hydraulic cylinder (wheel swing mechanism)
210 seedling tray conveying section 220 seedling planting section 300 seedling tray collecting section 851 spring 862 transmission shaft

Claims (6)

A traveling vehicle body supported by a frame including wheels,
A seedling tray transport unit that is attached to the rear portion of the traveling vehicle body and transports a seedling tray containing pot seedlings from a starting end to an ending end,
A seedling planting unit that is provided in the middle of the seedling tray transporting unit, takes out the pot seedlings from the seedling tray, and seeds the taken pot seedlings in a field.
A seedling tray collecting unit that is provided near the terminal end of the seedling tray transporting unit and that collects empty seedling trays from which the pot seedlings have been taken out by the seedling planting unit,
A spare seedling frame attached to the frame, for loading a spare seedling tray containing the pot seedlings,
A suspension mechanism provided between the wheel and the frame,
An elevating device that is provided above or below the suspension mechanism and that elevates and lowers the frame to change the height of the traveling vehicle body. The lifting device is
The seedling transplanting machine according to claim 1, further comprising a hydraulic cylinder or an air cylinder for moving up and down the frame. The lifting device is
The seedling transplanter according to claim 1 or 2, wherein pressure oil is applied to the inside of a casing that houses the suspension mechanism, and the frame can be moved up and down together with the casing. The lifting device is
The seedling transplanter according to any one of claims 1 to 3, further comprising: a suspension compression mechanism capable of changing a height of the traveling vehicle body by compressing a spring configuring the suspension mechanism. The lifting device is
The wheel swing mechanism capable of swinging the wheel is provided for each casing housing the suspension mechanism around a transmission shaft that transmits power from the mission case to the wheel. The seedling transplanter according to any one of claims. The seedling transplanter according to any one of claims 1 to 5, wherein a switch for operating the lifting device is provided near a pilot seat provided on the traveling vehicle body.