JPS6145802Y2 - - Google Patents

Description

[Detailed description of the invention] The purpose of the invention is to provide a ridge coating device installed at the rear of a tillage device attached to a tractor, in which both ends of a horizontal rod that is hung horizontally in the left and right direction with respect to the traveling direction are A vertical rod that is fitted and fixed in place so that its position can be adjusted in the left and right directions has a shaft support that can be rotated only in the vertical direction, extends rearward, and is constantly biased downward by a tension spring. A ridge covering device comprising: a treading wheel that presses the side edge of the agricultural film at the rear end of the vertical rod; and a soil covering plate located diagonally rearward and outward from the treading wheel and covering the side edge of the agricultural film with soil. This has been commonly practiced in the past, but in such a structure, the vertical rod can only rotate in the vertical direction, and both the tread wheel and the soil cover plate are biased by springs. Only in the direction perpendicular to the ground. Therefore, when covering ridges along the contour lines of a field with a slope, the tractor and tiller tend to slide downward due to their own weight, making it impossible to travel along the contour lines. It becomes necessary to move the tractor in a position facing slightly above the slope, that is, with the center line of the tractor deviating from the direction of travel. By the way, as mentioned above, since the vertical rod is always parallel to the center line of the tractor, the entire ridge covering device inevitably moves obliquely, and the treading wheels on the lower side of the slope are used for agricultural film. Not only does it become difficult to carry out tread pressure as it comes off the side edge, and soil covering by the soil covering plate becomes impossible, but also abnormal resistance force due to the skew movement acts on the treading wheels and the soil covering plate, causing deformation and damage to both the vertical rods and the like. This will cause problems. In addition, even on flat land, when covering with agricultural film at the same time as forming ridges that curve left and right due to the topography, tread wheels and soil covering plates, etc. located at the rear of the part where the tilling ridge will be worked, should be It is extremely difficult to adapt to the bending of the ridges formed in advance and apply pressure to both edges of the agricultural film to cover it with soil. Therefore, in order to eliminate these and other problems, the present invention has been developed to provide a ridge covering device installed at the rear of the tilling device that is fitted externally to both ends of the horizontal rod that is horizontally suspended in the left and right direction with respect to the direction of travel. Then, a base rod is extended to the rear surface of the sliding fitting to be fixed so that the position can be freely adjusted in the left and right direction, and holes are bored at right angles vertically and horizontally at the rear end of the base rod. A pair of left and right vertical bars are connected via a universal joint with a pin hole so as to be rotatable in the vertical, horizontal, and composite directions, and a treading wheel is attached to the rear end of the vertical bar, and a cover plate is provided on the outside of the vertical bar. are provided symmetrically, and a tension spring is suspended on the vertical rod side and the base rod side, and the hook part on the base rod side of the tension spring is provided inside than the hook part on the vertical rod side, The left and right tread wheels and soil covering plates can be used regardless of the direction of travel of the tractor and the tiller section attached to it in tandem, or the nose declination.
To provide an agricultural film ridge covering device having a structure in which a treading wheel and a soil-covering plate are adapted to be placed in optimal positions and can always tread and cover the side edges of the agricultural film with soil.

To illustrate and explain the embodiment of the present invention with reference to the drawings, 1 is a tilling device having a tilling section 2, and a three-point link 3 is attached to the rear of a tractor (not shown).
It is being towed by The tilling section 2 is a rotary tilling blade that rotates around a horizontal horizontal axis, and has the function of cultivating the ground surface, crushing the soil, and softening the soil. Reference numeral 4 denotes a horizontal rod that is hung horizontally in the left and right direction with respect to the direction of travel; 5 and 5' are sliding metal fittings that are fitted onto the left and right sides of the horizontal rod 4 and fixed so as to be able to adjust the position in the left and right direction; 6,
Reference numeral 6' denotes a base rod extending from the rear surface of each of the sliding metal fittings 5, 5'. Reference numeral 7 is a universal joint, and two parts, a joint 7' with a vertical pin hole and a joint 7'' with a pin hole perpendicular to the left and right, are fixed to each other to form an integral universal joint. 8 is a bifurcated metal fitting, and vertical rods 9, 9' extending rearward on the left and right, respectively, and rotatably supporting the treading wheels 10, 10' are fixed to the rear surface of the bifurcated metal fitting 8. The front end is a part of the left and right universal joints 7, and is connected to the joint 7'' side with a pin A that is vertically rotatable and has a pin hole drilled in the horizontal direction, and is also connected to the joint 7'' with a pin hole drilled in the vertical direction. Vertical rods 9, 9' are pivotally supported by pins B on the side of the joint 7' having a pin hole and on the base rods 6, 6', respectively, so as to be rotatable in the left-right direction. C is a stop pin for preventing pin B from coming off. 11 and 11' are arm rods whose front ends are fixed to the vertical rods 9 and 9', respectively, and each rear end has a treadle wheel.
Covering plate 1 located diagonally rearward and outward at 0,10'
2 and 12' are rotatably supported. 13,1
3' is a pull arm whose lower end is fixed to the vertical rods 9 and 9', respectively, and through which a screw rod 15, on which one of the tension springs 14 is hung, is inserted into the bent part of the head;
are pull arms that are fixed to the inside of the base rods 6 and 6', respectively, and hang the other side of the tension spring 14 on the tips thereof, and the tension springs 14 are pulled from the hook parts on the vertical rods 9 and 9' side, respectively, to the base rod 6. , 6' side hooks are on the inside, and attach the tension spring 14 to the tension arms 13, 13'.
and hooked on the pull arms 16 and 16' respectively,
The vertical rods 9, 9' are biased in a composite direction of the downward and lateral directions. 17 is a tension spring 14 that moves the screw rod 15 up and down.
A wing nut is shown for fixing the screw rod 15 by adjusting the tension appropriately. Reference numerals 18 and 18' refer to a pair of right and left leg metal legs whose upper ends are fixed to the lower side of the sliding metal fittings 5 and 5'.
and a ruler wheel 23 for adjusting the height of the ridge by replacing the shaft 22 at the bottom thereof, one on each left and right.
Each is individually supported. 24 is a film roll wrapped with agricultural film, and 24' is an agricultural film that is unwound as the vehicle advances. Reference numeral 25 denotes a film fishing rod for fishing the left and right ends of the film roll, which is fitted and fixed in a through hole 26 fixed to the base rods 6 and 6' so that its position can be adjusted in the left and right directions according to the width of the film roll 24. do. 27 is agricultural film 2
A slack absorbing rod 28 is curved downward in an arc shape to absorb the slack that occurs in the center of the horizontal rod 4'. It is a support rod that bends upward and backwards, and is fixed at its tip to the center of the slack absorbing rod 27 so that the height of the slack absorbing rod can be adjusted freely. 31 is a connecting member 3 stretched at the rear of the tilling section 1
0 and the horizontal rod 4, and 32 indicates a connecting pin. Arrow D indicates the direction of travel. A shows the soil that has been tilled and crushed by the tiller 2, and b shows the ridge formed by the forming plate 19. In FIG. 4, X indicates a horizontal component force due to the tension F of the tension spring 14, and Y indicates a direction in which a vertical component force acts.

Next, to explain the operation, the tilling section 2 of the tilling device 1, which is towed behind a tractor (not shown) by a three-point link 3, etc., tills and crushes the ground surface as the tractor advances, making it swollen and soft. Legs 18 extend below the sliding fittings 5, 5' on the left and right sides of the horizontal rod 4 connected to the rear of the tilling device 1, which act to move the soil toward the center while preparing the soil. 1
The agricultural film 8' is formed into a desired ridge by a forming plate 19 supported via support plates 20 and 21, and the agricultural film unwound from the film roll 24 onto this ridge surface is used to absorb the slack that occurs in the center of the film by a slack absorbing rod 27. While the treading wheels 10, 10' are rotatably supported on the rear ends of the left and right vertical rods, the left and right edges of the agricultural film 24' are pressed, and the treading wheels 10, 10' are positioned diagonally on the rear outer side of each of the treading wheels 10, 10'. Soil cover plate 12,
12' is used to cover the ridges while covering the left and right edges of the agricultural film 24' after treading.In this case, the covering work is carried out on flat land and in straight ridges. Although there is no noticeable difference in the function of the structure compared to conventional ridge covering equipment, when ridge covering work is carried out along contour lines in areas where the field is sloped like a mountain surface, tractors, tillers, etc. The tractor tends to slide downward due to its own weight, and it is not possible to proceed with the nose of the tractor pointing at the contour line. Therefore, the tractor must proceed with the nose slightly pointing upwards on the slope, that is, with the center line of the tractor deviating from the direction of travel. In the case of , left vertical rod 9
The tension spring 1 is placed on the upper side of the slope as shown in FIG.
4 in the directions of the X and Y component forces and rotated by the universal joint 7, so that the treading wheels 10, 10' and the soil covering plates 12, 12' are brought to the hem of the ridge without changing their operating angles. Agricultural film 2 at the hem of a ridge
4' on the edge with treading wheels 10 and soil covering plate 1
The soil covering by step 2 was carried out without any problem, and the right vertical rod 9'
is biased by a similar structural action, so the treading wheel 10' hits the right hem of the ridge and is pushed out, thereby completely treading and covering the edge of the agricultural film 24' with soil. Furthermore, even on flat land, when covering with agricultural film 24' is carried out at the same time as forming curved ridges due to topography, the treadling wheels 10, 10' are located slightly behind the tilling section 2. and soil covering plate 12,
12' is always pressed against the side edge of the agricultural film 24' at the hem of the ridge and is biased in the direction of covering the soil, so that the agricultural film 24' adapts to the bending of the ridge formed by the shaping plate 19. It is possible to cleanly tread on both the left and right edges of the ridge and completely cover the ridge while covering with soil.

With the structure and operation described above, the present invention has a ridge covering device placed at the rear of the tilling device, which is fitted onto both ends of the horizontal rods that are hung laterally in the left and right direction with respect to the direction of travel. A base rod is provided on the rear surface of the sliding metal fitting which is fixed in a freely adjustable position, and pin holes are formed at the rear end of the base rod so as to be perpendicular to each other vertically and horizontally. A pair of left and right vertical bars are connected via joints so as to be rotatable up and down, left and right, and in the composite direction. The left and right tread wheels and soil cover plates are placed in tandem with the tractor by suspending tension springs from the vertical and base rod sides that act to push the hem of the ridge in the direction of narrowing the ridge from the left and right. Irrespective of the direction of movement of the plowing section to which it is attached or the yaw angle of the tractor's nose, the left and right treading wheels are brought to the hem of the ridge, respectively, and always tread and cover the left and right edges of the agricultural film. Because of its structure, it can be used not only for covering straight ridges on flat fields, but also for ridge covering work on various sloped surfaces, such as along the contour lines of fields on slopes and fields on mountainsides. This method has great effects, such as being able to completely cover ridges with agricultural film, even on flat land or when curved ridges are formed due to the topography.

[Brief explanation of drawings]

FIG. 1 is a side view illustrating the working state of the agricultural film ridge covering device of the present invention. Figure 2 is also a plan view. FIG. 3 is a perspective view showing the main structure of the present invention. FIG. 4 is an exemplary diagram showing component forces in the vertical and horizontal directions with respect to the direction of action of the tension spring 14. 1... Cultivation device, 4... Horizontal rod, 5... Sliding metal fitting, 5'... Sliding metal fitting, 6... Base rod, 6'... Base rod, 7... Universal joint, 9... Vertical Rod, 9'...Vertical rod, 10...Treading wheel, 10'...Treading wheel, 12...
...Soil cover plate, 12'...Soil cover plate, 14...Tension spring.

Claims (1)

[Scope of utility model registration request] In a ridge covering device placed at the rear of a tillage device, a sliding metal fitting is fitted onto both ends of a horizontal rod that is hung laterally in the left and right directions with respect to the direction of travel, and is fixed so that the position can be adjusted in the left and right directions. A base rod is extended to the rear of the
At the rear end of the base rod, a pair of left and right vertical rods can be rotated vertically, horizontally, and in a combined direction through a universal joint having pin holes that are bored vertically and horizontally at right angles to each other. The vertical rods are freely connected, and the rear ends of the vertical rods are equipped with treadling wheels, and the rear outer sides thereof are provided with soil covering plates in a bilaterally symmetrical manner, and tension springs are suspended on the vertical rod side and the base rod side. A ridge covering device for agricultural film, characterized in that the hook portion on the base rod side of the tension spring is provided inside the hook portion on the vertical rod side.