JPH051204Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention This invention relates to a suppression roller of a ridge suppression device that suppresses the upper surface of a chevron-shaped ridge with a high central portion.

Technical background of the invention and its problems Conventionally, when shaping a chevron-shaped ridge with a high central part, the upper surface of the ridge that has been shaped into a chevron shape with a ridge shaper etc. is Generally, the pressure is applied using a pressure roller that gradually becomes thicker toward the end. However, such pressure rollers have a constant width, and if the width of the ridge is changed depending on the type of crop, the pressure roller must be replaced with a width suitable for the width of the ridge. For this reason, it is necessary to provide a plurality of pressure rollers with different width dimensions, and there are also drawbacks such as the need for time and effort to attach and detach the rollers.

Purpose of the invention This invention has been made in view of the above points, and is to provide a pressing roller of a ridge pressing device that can press the upper surface of a chevron-shaped ridge with different widths using a single pressing roller. With the goal.

Summary of the invention This invention involves providing a pair of left and right cones between the mounting stays, with their larger outer ends adjacent to the opposing mounting stays and their smaller inner ends facing each other, fixing a slide tube of a fixed diameter to the inner end of one of the cones, fixing a guide tube inside the other cone that fits slidably on the slide tube and providing a screw guide on this guide tube, providing a fixing screw that is screwed into the screw guide without protruding from the outer periphery of the other cone and moves toward and away from the outer periphery of the slide tube, and forming a hole in the other cone facing the screw guide and with a larger diameter than the fixing screw. Therefore, there is a pair of cones over almost the entire area between the opposing mounting stays, which makes it possible to suppress the upper surface of the mountain-shaped ridges, and by sliding the slide tube and guide tube against each other and fixing them with a fixing screw,
The overall width of the two cones can be adjusted,
It is also possible to suppress mountain-shaped ridges of different ridge widths, and the adjustment of the ridge width can be done easily by adjusting only one fixing screw, and since a cone can be provided across the entire width of the mounting stay, the spacing between the mounting stays can be made smaller for the ridge width to be suppressed, allowing the overall size to be reduced.

Embodiment of the invention An embodiment of the invention will be described based on the drawings. Lower link 2 is installed at the rear of tractor body 1.
A working machine 5 supported by a top ring 3 and the like and raised and lowered by a lift arm 4 is connected thereto. A rotary tiller 6 that rotates by a driving force from the machine body 1 is provided at the forefront of the working machine 5, and a ground leveling plate 8 is connected to the rear of the rotary cover 7.

The working machine 5 is provided with an adjustment frame 9 that extends rearward, and a mounting bracket 10 is connected to the rear of the adjustment frame 9 so as to be able to freely adjust the position in the longitudinal direction. A square shaft 11 is fixed. Support rods 12 extending downward are connected to both ends of the square shaft 11 so as to be slidable in the left-right direction and fixed at any position. A pair of left and right tail wheels 13 are rotatably connected to the lower end of the support rod 12 to regulate the plowing depth by the rotary tiller 6 and to shape the ridges and grooves. A mounting stay 14 that extends rearward and downward is connected to a substantially central portion of the support rod 12 in a vertical direction, and is rotatably connected in a vertical direction, and a rear end portion of the mounting stay 14 extends perpendicularly to the traveling direction of the working machine 5. A pressure roller 15 having an axis in the left and right direction is supported rotatably around the axis. Furthermore, a rearwardly extending side frame 16 and a rear frame 17 are successively connected to the substantially central portion of the support rod 12 in the vertical direction while being urged by a spring 18 to rotate downward. The rear frame 17 has a height adjustment rod 1.
A treading wheel 20 is connected to the treading wheel 20 so as to be adjustable in height, and a soil covering disk 21 is rotatably connected to the rear frame 17 at a position slightly outside the treading wheel 20. A center support 22 is connected to the adjustment frame 9, and a support pipe 23 is attached to the center support 22 so as to be able to adjust its position in the front and back direction.The support pipe 23 holds a multi-film 24 wound in a roll shape. A seat rod 25 is connected so as to be vertically adjustable.

As shown in FIG. 2, the pressure roller 15 is made up of a slide tube 26 and a pair of left and right cones 27, 27a that expand outward from the center. A slide tube 26 is fixed on the same axis. The other conical body 27 includes a conical tube 28 and a slide tube 26, each having an outer peripheral surface that gradually expands outward from the center.
It consists of a guide tube 29 having a slightly larger diameter, and the guide tube 29 is slidably fitted onto the slide tube 26 . Note that the conical tube 28 and the guide tube 2
9 are welded together at their inner ends, and a ring-shaped holding plate 30 is further welded between the outer peripheral surface of the guide tube 29 and the inner peripheral surface of the substantially central portion of the conical tube 28. . A screw guide 31 is fixed approximately at the center of the guide tube 29, and a fixing screw 32 is screwed into the screw guide 31 so that its tip can move toward and away from the outer peripheral surface of the slide tube 26. A hole 33 for tightening or loosening the fixing screw 32 is formed in a portion of the conical tube 28 facing the screw guide 31. Further, a disk-shaped lid 34 is fixed to the outer end of the conical cylinder 28, and a boss rotatably fitted into a support hole 35 formed in the mounting stay 14 is provided at the center of the lid 34. 3
6 is fixed. A similar boss 36 is also fixed to the outer end of the conical body 27a.

In such a configuration, as the working machine 5 towed by the machine body 1 advances, the rotary tilling section 6
tills the field, and leveling plates 8 level the tilled soil almost flat. As the tail wheel 13 advances while regulating the plowing depth, it forms a pair of ridges, a ridge is formed between the ridges, and the multi-film 24 wound in a roll is pulled out on the surface of the ridge. coated with The mulch film 24 covering the ridge is pressed by a treading wheel 20 at the end of the ridge, and the treading portion is covered with soil by a soil covering disk 21. Here, the pressing roller 15 located in front of the treading wheel 20 advances while rolling on the upper surface of the ridge covered with the multi-film 24, compressing the upper surface of the ridge and changing the shape of the ridge into a chevron shape with a high central portion. shall be. Note that the head of the fixing screw 32 does not protrude from the outer peripheral surface of the conical tube 28, and damage to the multi-film 24 caused by the fixing screw 32 is reliably prevented.

Next, a case will be described in which the ridge width is changed depending on the type of crop, etc. First, the fixing screw 32 is loosened, the conical body 27 is slid inward, and the pressure roller 15 is removed from the mounting stay 14. Next, the position of the support rod 12 is adjusted in the left-right direction along the square axis 11, and the interval between the pair of left and right mounting stays 14 connected to the support rod 12 is changed in accordance with the width of the ridge. In addition,
By adjusting the position of the support rod 12, the tail wheel 13,
The positions of the treading wheel 20 and the soil covering disk 21 can be adjusted according to the ridge width. After changing the spacing between the mounting stays 14, the pressure roller 15 is positioned between the mounting stays 14, the cone 27 is slid outward, and the boss 36
is fitted into the support hole 35, and the fixing screw 32 is tightened to fix the conical body 27 and the slide cylinder 26. The conical body 27 is slid while being guided by the guide tube 29, and even after the sliding operation, the axes of the conical body 27 and the slide tube 26 are aligned, so that the conical body 27 does not wobble, and the suppressing roller is adjusted to expand and contract. 15, it is possible to effectively suppress mountain-shaped ridges having different ridge widths.

Effects of the invention As described above, the present invention provides a pair of left and right conical bodies between the mounting stays, the outer ends of which have large diameters being close to the mounting stays facing each other, and the inner ends of which have small diameters facing each other. A slide cylinder of a constant diameter is fixed to the inner end of one of the conical bodies, and a guide cylinder that is slidably fitted onto the slide cylinder is fixed to the inside of the other conical body, and a screw is attached to the guide cylinder. a guide is provided, a fixing screw is provided on the other conical body, and a fixing screw is provided on the other conical body, and a fixing screw is provided on the other conical body, and a fixing screw is screwed onto the screw guide so as not to protrude from the outer circumferential surface of the slide tube, and the fixing screw is connected to and separated from the outer circumferential surface of the slide tube; Since the facing holes are formed with a larger diameter than the fixing screws, there is a pair of conical bodies between the facing mounting stays over most of the area, which suppresses the upper surface of the chevron-shaped ridge. In addition, by sliding the slide tube and guide tube relative to each other and fixing them with fixing screws, the total width of the two cones can be adjusted, and it is possible to suppress chevron-shaped ridges with different ridge widths. This ridge width can also be adjusted by adjusting the fixing screw at one location, making the adjustment easy. Moreover, the cone can be provided over the entire width of the mounting stay. Therefore, the spacing between the mounting stays can be reduced relative to the width of the ridge to be suppressed, and the overall size can be reduced.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a side view of the whole, FIG. 2 is an enlarged front view showing a portion of the pressure roller in cross section, and FIG. 3 is a longitudinal sectional front view showing a further enlarged portion of the pressure roller. 5... Working machine, 26... Slide tube, 27...
Cone, 27a... Cone, 29... Guide tube, 3
2...Fixing screw.

Claims (1)

[Scope of utility model registration request] A pair of left and right cones are provided between the mounting stays, the outer ends of which have large diameters are close to opposing mounting stays, and the inner ends of which are small in diameter are opposed to each other, and the inner end of one of the cones is provided between the mounting stays. A slide cylinder of a constant diameter is fixed to the conical body, a guide cylinder that is slidably fitted onto the slide cylinder is fixed to the inside of the other conical body, and a screw guide is provided on this guide cylinder, and the outer periphery of the other conical body is fixed. A fixing screw is provided which is screwed into the screw guide so as not to protrude from the surface of the slide tube and moves toward and away from the outer circumferential surface of the slide tube, and a hole having a diameter larger than the fixing screw is provided in the other conical body and is opposed to the screw guide. A pressing roller of a ridge pressing device, characterized in that it is formed with: