JPS643291Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is based on a seedling planting device that is connected to a passenger traveling vehicle body through a link mechanism consisting of a top link and a lower link so that it can be raised and lowered, and is connected to a seedling planting device that is connected to a seedling planting device that can be used as an index when traveling in the next stroke. A pair of left and right line drawing tools for drawing planned lines in the field outside the side of the device are pivoted so as to be able to swing between a line drawing position protruding outward to the side of the machine and a retracted position close to the side of the machine. The line drawing tool and the top link of the link mechanism are connected via a wire, and the line drawing tool is pulled and swung from a line drawing position to a stored position by the wire in conjunction with the rise of the seedling planting device. furthermore, a pair of left and right rollers each supported by a support member in a cantilever manner are disposed between the link mechanism and a pair of left and right wire drawing tools, and the wire is stretched so as to bypass other objects. Further, a connecting plate is provided at the rear of the body of the roller to integrally connect the rotating shafts of the pair of left and right rollers, so that the wire wound around the roller can be prevented from coming off by the connecting plate. Regarding the line drawing device of the riding rice transplanter,
The purpose is to enable the wire to be bent and guided by the rollers over a long period of time.

The above-mentioned line drawing device pulls and swings the line drawing tool with a wire in conjunction with the raising of the seedling planting device when turning in the headland area after one stroke. Although this was designed to simplify the operation of switching from the wire drawing position to the storage position, the structure in which the wire is bent and guided by rollers had the following problem.

That is, conventionally, as shown in FIG. 6, a connecting plate 23 provided at the rear of the roller 21 has been configured to prevent the wire 16 from coming off the roller 21. The connecting plate 23, which also serves as a wire retainer, is formed in a shape that simply extends outward along the side surface of the roller 21. Therefore, the wire 16 is connected between the roller 21 and the connecting plate 23, which also serves as a wire retainer. In addition, there was a risk that the wire 16 would be prematurely worn and damaged due to sliding contact by the edge of the connecting plate 23, which also serves as a retainer.

The present invention has been made with the above-mentioned circumstances in mind, and in the wire drawing device of the riding-type rice transplanter having the above-mentioned structure, the peripheral part of the connecting plate that integrally connects the rotational shafts of the pair of left and right rollers. , a wire guide portion formed in a curved surface is provided on the outer peripheral side of the roller so as to overlap in the direction of the rotational axis so as to prevent the wire from being caught between the roller and the connecting plate. characterized by something.

In other words, in order to prevent the wires from coming off the rollers, and to support the rollers cantilevered by the pair of left and right support members, the peripheral edge of the connecting plate integrally connects the rotational shafts of the left and right rollers. In addition, since a wire guide portion having a curved outer surface is formed on the outer peripheral side of the roller and overlapping in the direction of the rotation axis, the wire guide portion is formed on the curved outer surface. In order to properly guide the wire without damaging the wire and to prevent it from moving greatly outward in the direction of its rotational axis, the wire is connected between the roller and the connecting plate that also serves as a stopper. This eliminates the above-mentioned disadvantages such as the wire getting stuck in between the rollers and early damage due to wear, and the wire can be smoothly guided in a bending manner by the rollers while preventing the wire from coming off. As a result, a wire drawing device for a riding rice transplanter that can be used satisfactorily for a long period of time as a whole has been obtained.

Since the connecting plate for supporting the pair of left and right rollers on both sides prevents the wire from coming off and prevents it from being caught between the rollers and the connecting plate, it can be removed without using any special members. It has the advantage of being able to prevent locking and pinching, and simplifying the structure.

Embodiments of the present invention will be described in detail below based on the drawings.

Figure 1 shows the side view of the riding rice transplanter, with left and right front wheels 1, 1, left and right rear wheels 2, 2, which are operated to change direction.
A seedling planting device 7 for planting five rows of seedlings as the aircraft 6 advances is connected to the rear of a traveling aircraft 6 that includes an engine 3, a driver's seat 4, a steering handle 5, and the like.

As shown in FIGS. 1 and 2, the seedling planting device 7 includes a link mechanism 8 consisting of an upper top link 8a and a pair of lower left and right lower links 8b, 8b.
A hydraulic cylinder 9 is installed between the top link 8a and the machine body 6 so that it can rise and fall, and the seedling planting device 7 is connected to the machine body 6 via the is configured to be raised and lowered.

Further, in the figure, reference numerals 20, 20 denote a pair of left and right swing links installed in an inverted trapezoidal shape and supporting the seedling planting device 7 in a rolling manner with respect to the link mechanism 8. (See Fig. 4) The seedling planting device 7 includes a forward-leaning seedling platform 10 that is reciprocated laterally with a constant stroke, and a vertical circulation operation between the lower end of the seedling platform 10 and the mud. It is equipped with five planting claws 11..., a group of floats 12 that slide on the mud surface, etc., and the seedling platform 1
The structure is such that seedlings are taken out one by one along the lower end row of the group of seedlings placed on the tray and planted.

Further, the seedling planting device 7 is provided with a line drawing posture in which a pair of left and right line drawing tools 13, 13, which draw a traveling line to be used as an index when traveling in the next process, in the field on the lateral outside of the device protrude toward the lateral outside of the machine. and a retracted position close to the side of the aircraft.A line drawing tool is provided on the side of the seedling planting device and is biased to a protruding position by springs 14, 14. A mechanism for switching and swinging the line drawing tools 13, 13 from the drawing position to the storage position in conjunction with the rise of the seedling planting device 7 , and automatically engaging the line drawing tools 13, 13, which are switched from the storage position to the storage position, to the storage position. Mechanism for holding
The release operating tools 15, 15 of the lock holding mechanism are at least in a position where the driver on the traveling body 6 can operate the seedling planting device 7 in its lowered position for planting.
Each part will be explained below with reference to FIGS. 1 to 4.

The automatic switching rocking mechanism includes the top link 8
The end of a and the pivot base of each wire drawing tool 13, 13 are connected via wires 16, 16, and the seedling planting device 7
The apparatus is configured to pull and swing the line drawing tools 13, 13 to the retracted position by the posture changing action of the seedling planting device 7 and the top link 8a as they rise.

The automatic locking and holding mechanism includes wire drawing tools 13, 13.
The locking metal fittings 18, 18 which lock and hold the pins 17, 17 protruding from the pivot base of are pivotably supported to be able to switch between a locking position and a locking release position, and the locking position is In addition to elastically biasing the crocodile, this metal fitting 18,1
8, the pins 17, 17 are inserted into the locking grooves 18a, 18.
Surfaces T and T are formed for guiding to a. Then, when the wire drawing tools 13, 13 swing to the retracted position, the locking fittings 18, 18 are pushed and swung toward the unlocking position due to the contact between the pins 17, 17 and the guide surfaces T, T. while moving the pins 17, 17 into the locking groove 18.
A, 18a are automatically engaged to automatically lock and hold. The locking fittings 18, 18 are provided with a line drawing tool 13, which is artificially switched and swung to a posture closer to the body than the stored posture when unnecessary, such as when traveling on the road. Another locking groove 18b, 18b for locking and holding 13 in that position is formed.

The release operation tools 15, 15 are connected to the locking metal fitting 1.
It is composed of a rod-shaped body whose lower ends are pivotally supported by 8 and 18, and whose middle part is inserted and supported by guide bodies 19 and 19 which are connected and supported by the seedling planting device 7 , and whose upper ends have handles 15a and 15a. Bent formation. The locking fittings 18, 18 are configured to be switched to the unlocking position by pulling upward.

A pair of rollers 21, 21 are provided for bending and guiding the wire 16 so as to bypass other objects. These rollers 21, 21 are supported in a cantilevered manner by support members 22, 22 supported between the swing links 20, 20, respectively.

The rotation of the pair of left and right rollers 21, 21 is performed in order to support the rollers 21, 21, which are cantilever-supported by the support members 22, 22, on the rear side in the direction of the rotation axis of these rollers 21, 21. Support shaft a, a
A connecting plate 23 is provided to integrally connect the rollers 21, 21, and a pair of upper and lower wire guide portions 23a, 23a, which overlap the outer peripheries of the rollers 21, 21 and have curved outer surfaces, are provided on the connecting plate 23. It is provided.

[Brief explanation of the drawing]

The drawings show an embodiment of the line drawing device for a riding type rice transplanter according to the present invention, in which Figure 1 is a side view of the riding type rice transplanter, Figure 2 is a side view of the line drawing device attachment section, and Figure 3 is a side view of the line drawing device attachment section. 4 is a schematic rear view showing the wire winding structure, FIG. 5 is a longitudinal sectional side view showing the roller support, and FIG. 6 is a side view of a conventional example. 6 ... Passenger traveling aircraft, 7 ... Seedling planting device, 8a
...Top link, 8b...Lower link, 8...
... link mechanism, 13 ... wire drawing tool, 16 ... wire, 21 ... roller, 22 ... support member, 23 ...
...Connecting plate, 23a...Wire guide section, a...Roller rotation support shaft.

Claims (1)

[Scope of utility model registration request] A seedling planting device 7 , which is connected to the passenger traveling vehicle body 6 through a link mechanism 8 consisting of a top link 8a and lower links 8b, 8b so as to be operable to raise and lower the seedlings, is equipped with a device to set a planned traveling line to be used as an index when traveling in the next stroke. A pair of left and right line drawing tools 13, 13 to draw on the field at the outside side
The pair of left and right drawing tools 13, 13 and the top link 8a of the link mechanism 8 are connected via wires 16, 16 to form the wire drawing tool 1.
3 and 13 are configured to be pulled and swung by a wire 16 from a drawing position to a storage position in conjunction with the rise of the seedling planting device 7 , and furthermore, the link mechanism 8 and a pair of left and right drawing tools 13, 13 Between,
A pair of left and right rollers 21, 21 cantilevered by support members 22, 22, respectively, are disposed, and the wires 16, 16 are stretched so as to bypass other objects. Rotation shafts a, a of the pair of left and right rollers 21, 21 are provided at the rear of the machine.
A wire drawing device for a riding rice transplanter is provided with a connecting plate 23 that integrally connects the wires 16, 16 wound around the rollers 21, 21 so that the wires 16, 16 wound around the rollers 21, 21 can be prevented from coming off by the connecting plate 23. The rollers 21, 21 are attached to the periphery of the connecting plate 23 that integrally connects the rotation support shafts a, a of the left and right pair of rollers 21, 21.
The wires 16, 16 are connected to the rollers 21, 21 and the connecting plate 23, overlapping in the direction of the rotation axis on the outer peripheral side
The wire guide portions 23a, 23a are formed in a curved shape to prevent the wire guide portions from being caught between the wire guide portions 23a, 23a.
A line drawing device for a riding rice transplanter, characterized in that it is provided with.