JPH0347484Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention continuously feeds out a sheet to cover high ridges for tobacco cultivation formed by ridge forming plates,
The present invention relates to a mulch work device that stretches the sheet over a ridge surface and embeds both side edges of the sheet in the soil on both sides of the ridge.

"Prior Art" Conventionally, there has been a technique of covering the ridge surface with a sheet, as shown in, for example, Japanese Utility Model Application Publication No. 54-39303.

``Problems to be solved by the invention'' In the prior art, the pressure roll was formed by alternately combining rigid wheels and elastic wheels. However, since the elastic rings are compressed inside the rigid rings arranged in an arc, the crimping of the elastic rings creates rotational resistance, making it impossible for the rigid rings to rotate smoothly. There were problems such as excessive stretching of the sheet covering the

``Means for Solving the Problems'' However, the present invention covers the ridge surface formed by the ridge forming plate with a sheet via a pressure roll, and also alternately combines rigid wheels and elastic wheels to form the ridges. In a device in which a pressure roll is formed by being pivotally supported on a support shaft along the surface, the outer diameter of the elastic wheel is formed to be approximately the same or slightly smaller than the inner diameter of the rigid wheel, and Both sides of the elastic ring can be connected and supported in a loosely inserted state.

``Operation'' Therefore, even when the rigid wheel rotates and the inner side rubs against the outer periphery of the elastic wheel, this frictional force is smaller than before, so the rotational resistance of the rigid wheel is smaller than before. It can be rotated smoothly and multi-purpose work can be performed safely without excessively pulling the sheet as in the past.

"Embodiments" Examples of the present invention will be described below in detail based on the drawings. Figure 1 is an enlarged cross-sectional view of the main part, and Figure 2 is a schematic side view of the whole. In the figure, 1 is an agricultural tractor and 2
is the engine, 3 is the transmission case, 4 is the front wheel, 5 is the rear wheel, 6 is the rear axle, 7 is the PTO output case, 8 is the driver's seat, 9 is the steering wheel, 10 is the lower link, 11 is the lift link, 12 13 is a lift arm, and 13 is a hydraulic device for lifting/lowering.

In the figure, 14 is a ridge working machine for forming high ridges 15 for tobacco cultivation, 16 is an internal ridge forming plate, 17 is a disc rotor that supplies cultivated soil to the forming plate 16,
Reference numeral 18 denotes a center drive type transmission case that interlocks and connects the rotor 17 to the PTO shaft 7, which pulls the working machine 14 equipped on the tractor 1 over plowed and leveled soil to form a high ridge 15. It is configured to do so.

19 in the figure is a synthetic resin sheet 20 on the high ridge 15.
This is a multi-purpose work machine that covers the ridge work machine 1.
4 is provided with a main culm 21 whose front end is fixed to a horizontal frame 22 at the upper rear side.

As shown in FIG. 3, a horizontal culm 23 whose one end is fixed to the main culm 21 is extendable to the left and right, and a sheet roll 20 is placed between both ends of the left and right horizontal culms 23, 23.
a, and a sheet receiving roll 24 is positioned below the roll 20a, and the sheet roll 20
The sheet 20 fed out from a is placed on the sheet receiving roll 2.
It is formed to be supported by 4. A vertical culm 26 is vertically supported at the center of the horizontal frame 22 via a support arm 25, and the roll 24 is attached to the vertical culm 26.
A support rod 29 of a pressure roll 28 to be attached to the upper surface of the high ridge 15 is connected and fixed to the lower end of the vertical culm 26, and the vertical culm 26 is locked to the support arm 25 with a bolt 30 so that the height can be adjusted. It will be done. As shown in FIG. 4, the pressure roll 28 includes a plurality of idle wheels 31 made of hard synthetic resin, which are rigid wheels.
and a cylindrical sponge cushion material 32 which is an elastic ring body interposed between each ring 31. These are arranged in parallel alternately and the roll 28 is freely rotated on the upper surface of the height ridge 15, and the sheet is Receiving roll 24
As shown in FIG.
Both ends of the support shaft 33 are fixed with nuts 34, 34, and the center of the shaft hole 31c of the idler wheel 31 and the shaft hole 32b of the auxiliary wheel 32 is formed to have the smallest diameter, and the outer side thereof is formed to have a larger diameter. However, the idler wheel 31 is properly attached to the arc-shaped support shaft 33 regardless of the bending angle.
The shaft hole 31a and the support part 29
A collar 35 is interposed between the left and right outermost idle wheels 31, 31 to prevent rattling.

Furthermore, annular holes 31b into which the cylindrical both sides of the cushion material 32 are inserted are formed on both sides of the idler ring 31, and a drain hole 31b is formed in the flange portion of the idler ring 31.
c, and the outer diameter B of the cushion material 32 is formed to be approximately the same or slightly smaller than the inner diameter A of the idler ring 31, and the axis of the cushion member 32 is formed to be approximately the same or slightly smaller than the inner diameter A of the idler ring 31. The hole inner diameter D is formed to be approximately the same or slightly larger, and the ring-shaped hole 31b is formed so that the cushion material 32 does not come off from the ring-shaped hole 31b of the idler ring 31 arranged in an arc shape on the upper surface of the ridge 15.
The depth E of the cushion material 32 and the width F of the cushion material 32 are formed to be sufficiently large. Annular hole 3 of rings 31, 31
1b and 31b, the cylindrical sides of the cushion material 32 are connected and supported in a loosely inserted state. The sizes and shapes of the idler wheels 31 and the cushioning members 32 are set so that the cushioning members 32 do not come off from the annular holes 31b on the outside of the idler wheels 31 arranged in.

Further, in FIG. 3, a support 36 is connected to the rear end of the main culm 21, a soil covering ring 37 is pivotally supported at the lower end of the support 36, and a spring 38 is used to press the soil covering ring 37 downward.
is connected to the support column 36, and the sheet 20
A pressure ring 39 that presses both side edges of the ridge 15 is provided, a swinging rod 40 that pivotally supports the pressure ring 39 is supported on the pillar 36, and a spring 41 that presses the pressure ring 39 downward is mounted on the swinging rod. In order to prevent the feed start end of the sheet 20 from getting entangled with the pressing wheel 39, a wrapping prevention arm 42 is attached to the pressing wheel 39, and soil covering rings 37 are used to cover both side edges of the sheet 20 held down by the pressing wheel 39. It is configured so that it is loaded and embedded.

Further, as shown in FIG. 3, a herbicide hopper 43 containing a powdered herbicide is supported on the horizontal frame 22,
A chute 44 for spraying herbicide onto the upper surface of the ridge 15 is attached to the lower part of the hopper 43, while a tank 46 for storing soil disinfectant is attached to the rear of the tractor 1 via a stand frame 45 in FIG. Thus, the soil disinfectant injection nozzle 48 is fixed to the rotary cover 47 provided on the transmission case 18, and the nozzle 48 is arranged along the rear side of the transmission case 18.

Further, as shown in FIG. 3, each of the working machines 14, 1
A gauge wheel 49 and a PTO wheel 50 for driving soil disinfection are respectively disposed at symmetrical positions on both sides of the connection part 9, and the gauge wheel 49 and PTO wheel are attached to a gauge frame 52 connected to the work machine via a support height adjustment handle 51. A swing arm 53 is vertically rotatably connected to the lower end of the gauge frame 52, a gauge wheel 49 is pivotally supported on the arm 53, and the PTO wheel 50 is mounted on one side of the multi-work machine. The upper limit position of the PTO wheel 50 is set at approximately the same height as the gauge wheel 49 on the other side of the multi-work machine.

Further, a plunger pump type soil disinfectant injection pump 54 is attached to the swing arm 53, and the pump 54 is connected to the tank 46 and the nozzle 48 in communication.

The present invention is constructed as described above, and the tractor 1
The ridge work machine 14 and the multi work machine 19 are pulled by the PTO output of the tractor 1, and the disc rotor 17 is driven by the PTO output of the tractor 1. A high ridge 15 is formed by the forming plate 16, and the sheet 20 fed out from the sheet roll 20a mounted on the horizontal culm 23 is sent to the lower side of the pressing roll 28 and pressing wheel 39 via the sheet receiving roll 24 at the rear. The side edge of the sheet 20 that has been fed and pressed by the pressing wheel 39 is covered with soil by the soil covering wheel 37, and the ridge 15 is
During the multi-purpose work, the work equipment 14,
19, the PTO wheel 50 rotates, driving the pump 54 to spray the soil disinfectant in the tank 46 from the nozzle 48 onto the ridge soil, and spray the herbicide inside the hopper 43 onto the surface of the ridge 15. Idle wheels 31 constituting the pressure roll 28 are attached and supported on the upper surface of the ridge 15 via the sheet 20.
Rotate and tow the sheet 2 onto the top surface of the ridge 15.
0 in close contact.

Furthermore, FIG. 5 shows a modified example of the pressure roll 28, in which the idle wheels 3 constituting the pressure roll 28 are
1 so that the outer periphery of the ridge 15 is approximately parallel to the surface of the ridge 15,
The outer circumferential surface 31d of the idler wheel 31 is formed into a curved surface approximately shaped like the arc of the upper surface of the ridge 15, and the outer circumferential surface 31d of the idler wheel 31 is
d is uniformly attached to the upper surface of the ridge 15, so that the sheet 20 can be placed over the ridge 15 while keeping the surface of the ridge 15 smooth.

"Effects of the Invention" As is clear from the above embodiments, the present invention covers the surface of the ridge 15 formed by the ridge forming plate 16 with the sheet 20 via the pressure roll 28, and the rigid wheel such as the idler wheel 31. In a device in which a compression roll 28 is formed by alternately combining elastic ring members such as cushion members 32 and supporting shafts 33 along the surface of the ridge 15, the elastic ring members 32 have elasticity compared to the inner diameter of the rigid ring member 31. The outer diameter of the ring body 32 is approximately the same or slightly smaller, and both sides of the elastic ring body 32 are loosely inserted into the adjacent rigid ring body 31 so that they can be connected and supported. Even when the inside rotates and the outer periphery of the elastic wheel 32 rubs against each other, this frictional force is smaller than before, so the rotational resistance of the rigid wheel 31 can be reduced compared to the past, allowing it to rotate smoothly. This has practical effects such as being able to safely perform multi-purpose work without excessively pulling the sheet 20 as in the past.

[Brief explanation of the drawing]

Fig. 1 is an enlarged sectional view of the main parts showing one embodiment of the present invention, Fig. 2 is an overall side view, Fig. 3 is a side view of the main parts, Fig. 4 is a front view of the same, and Fig. 5 is a side view of the main parts. It is an enlarged sectional view showing a modification. 15... ridge, 16... ridge forming plate, 20... sheet, 28... pressure roll, 31... idle wheel (rigid wheel), 32... cushion material (elastic wheel), 3
3...Spindle.

Claims (1)

[Scope of utility model registration request] A sheet is placed over the ridge surface formed by the ridge forming plate via a pressure roll, and a rigid ring body and an elastic ring body are alternately combined and supported on a support shaft along the ridge surface to form a pressure roll. In this device, the outer diameter of the elastic ring body is formed to be approximately the same or slightly smaller than the inner diameter of the rigid ring body, and both sides of the elastic ring body are loosely inserted into the adjacent rigid ring body so that they can be connected and supported. A multi-work device characterized by the following configurations.