JPH0442962Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a rotary tiller.

(Prior Art) There has conventionally been a rotary tilling device that is attached to the rear of a vehicle and is equipped with a cover that covers a tilling section that can be tilled in the forward direction.

(Problem that the invention is trying to solve) With conventional rotary tillage devices, the ground is depressed in the area where the vehicle's wheels remain, so when the depth of tilling is shallow, such as in so-called shallow tilling, the wheel marks are less tilled than the surrounding area. Soil becomes scarce. Therefore, even if leveling work is performed using the rear cover of the plowing section, the ground cannot be leveled sufficiently, and there is a problem in that wheel marks remain as recesses 49 as shown in Figure 5.

A problem also arises when a ridge former is provided behind the tiller and the tilled soil is formed into ridges by moving the vehicle forward. In other words, when forming multiple ridges at the same time,
It is necessary to arrange a plurality of ridge formers in parallel in the wheel width direction, and in such a case, it may be necessary to provide the ridge formers at positions corresponding to the wheel traces in order to maintain the desired interval between the ridges. In this case, there is a problem that the tilled soil is insufficient in the wheel marks, and as shown in Figure 6, the left and right ridges 1 at the positions corresponding to the wheel marks are lower than the central ridges 1, and the amount of soil is small. Furthermore, when the ridges are coated with a membrane, there is a problem in that a gap is formed between the low ridges and the membrane.

In view of the above, it is an object of the present invention to provide a rotary tiller that can eliminate the shortage of tilled soil at wheel marks.

(Means for Solving the Problems) The technical measures taken by the present invention to solve the problems of the prior art are characterized by:
In a rotary tilling device 5 that is attached to the rear of the rotary tiller 5 and is equipped with a cover 9 that covers a tilling section 8 that can be tilled in forward rotation, the soil raked up by the tilling section 8 that rotates in the forward direction is removed from the front of the tilling section 8. A guide member 45 that guides the wheel tracks 48 of the vehicle 46 is provided on the surface 9a of the cover 9 facing the tilling section 8.

(Function) The soil raked up by the tilling section 8 that rotates in the normal direction is
It is guided along the surface 9a of the cover 9 facing the tilling section 8 and the wheel marks 45 in front of the tilling section 8 along the guide member 45.

(Embodiment) Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. In FIGS. 1 to 3, reference numeral 5 denotes a rotary tiller installed at the rear of a tractor vehicle 46 via a three-point link mechanism 6. , a machine frame 7, a rotary tilling section 8 that can be tilled in normal rotation (in the direction of arrow a in the figure), a main cover 9 that covers the top of the tilling section 8, a rear cover 10 that covers the rear of the tilling section 8, and the like. The rotary tiller 8 comprises a pawl shaft 11 and a large number of tilling pawls 12. The pawl shaft 11 is supported in the center by a transmission case 13 of the machine frame 7, and through a transmission mechanism inside the transmission case 13, the pawl shaft 11 is provided with a plurality of tilling pawls 12. Rotationally driven in direction a.

Reference numeral 14 denotes ridge formers, and three ridge formers are attached to the lower rear side of the rear cover 10 at equal intervals in the left-right direction so that three ridges 15 can be formed at the same time.
Each ridge former 14 is provided with a pair of left and right membrane guide rods 16 corresponding to both sides of the top of the ridge 15 so as to protrude rearward. Here, the ridge formers 14 at the left and right ends are provided at positions corresponding to the wheel marks 48 of the tractor vehicle 46.

Reference numeral 17 denotes a membrane roll on which a membrane 18 is wound up, and the membrane 18 has a width sufficient to cover the three ridges 15.

Reference numeral 19 denotes a membrane feeding unit for rotatably supporting the membrane roll 17 and feeding out the membrane 18, which includes a pair of left and right support rollers 20 that support the membrane roll 17 from below, and a membrane roll 17. It has a pair of left and right roll supports 21 that fit on both left and right ends of the roll support body 21 . The support rollers 20 consist of a pair of front and rear support rollers, and the support rollers 20 are attached to a bracket 23 on a frame 22 laterally attached to the upper and lower intermediate portions of the rear cover 10.
It is rotatably supported via. The roll support 21 is for supporting the membrane roll 17 so that it does not fall off the support roller 20, and
It is provided at the rear end of a swing arm 24 attached to the frame 22 side.

25 is the membrane body 18 fed out from the membrane body roll 17
It is a lifting roller that lifts and guides the central part of the membrane roll 17. It is arranged near the rear of the membrane roll 17 at the left and right center of the membrane feeding part 19, and is rotated by a support rod 26 passing under the membrane roll 17. freely supported.

Reference numeral 27 denotes a soil covering chute for discharging the soil raked up by the tilling claws 12 of the rotary tilling section 8 rearward and covering the membrane body 18 on both left and right sides of the ridge 15. There are four of them. Each soil covering chute 27 has a discharge cover 28 that protrudes rearward, and a receiving plate 29 is provided on the top plate side of each soil covering chute 27 so as to project forward toward the rotary tiller 8 from the rear cover 10. It is provided.

A guide plate 30 in the left-right direction is provided below each soil-covering chute 27 so as to span over each soil-covering chute 27 . The guide plate 30 is supported by a parallel link mechanism 31 at the center of the upper part of the rear cover 10 so as to be swingable back and forth, and is supported by rods 32 at both left and right ends.
It is designed to be driven in the front-back direction by a pawl shaft 11 via. One end of the rod 32 is connected to an eccentric pin 34 fixed to a disk 33 at the outer end of the pawl shaft 11, and the other end is connected to a bracket 35 of the guide plate 30 by a pin 36.

37 refers to the membrane body 18 drawn out on the ridge 15.
Four tread wheels 37 are arranged in the left and right direction, and each tread wheel 37 is rotatably supported at the rear end of a support rod 38 bent in a dogleg shape. Each support rod 38 is pivotally supported by a bracket 39 at the upper end of the rear cover 10 so as to be able to swing up and down, and is biased downward by a spring 40. Among the four tread wheels 37, two tread wheels 37 located between the ridges 15
a is arranged slightly forward of the tread wheels 37b at both left and right ends, and after stepping into the groove 41 with the tread wheels 37a so that the membrane 18 is in close contact with the central ridge 15, the tread wheels 37b at both left and right ends are The attached wheels 37b are configured to step on both left and right ends of the membrane body 18 so as to be in close contact with the left and right ridges 15. 42 is a gauge wheel.

A guide member 45 is provided on the surface 9a of the main cover 9 facing the tilling section 8. This guide member 45 removes the soil raked up by the tilling section 8 which rotates in the normal direction by removing the marks 48 of the wheels 47 of the tractor vehicle 46.
This is to guide you. In this embodiment, the guide member 45 has a plate shape that curves from the central part in the width direction of the main cover 9 toward the left wheel mark 48L and the right wheel mark 48R.
Three pieces each are installed for 8R.

In the above configuration, during work, the rotary tiller 8 of the rotary tiller 5 is rotated forward to till the field, and the tilled soil is guided to the side of each ridge former 14 provided on the rear cover 10 to form each ridge. vessel 14
Three ridges 15 are formed at the same time. and,
Three ridges 1 from the membrane roll 17 of the membrane feeding unit 19
5, the membrane body 18 is fed out, and the membrane body 18 is trodden on both left and right sides of each ridge 15 by four tread wheels 37, so that the membrane body 18 is brought into close contact with each ridge 15. That is,
The center side of the membrane body 18 fed out from the membrane body roll 17 is lifted by the lifting roller 25 to give some slack to the center side of the membrane body 18, and then the center side of the membrane body 18 is lifted by the lifting roller 25. It is pressed into the groove 41 with the tread wheels 37a so as to be in close contact with the ridge 15 on both the left and right sides of the ridge 15.

In this way, the membrane body 18 is
After pressing the ridges 1 on both the left and right sides, the tread wheels 37b on both the left and right sides are used to step on both the left and right ends of the membrane body 18.
5, the membrane body 18 is brought into close contact with the film body 5.

After stepping on the membrane body 18, the soil raked up by the rotary tiller 8 is discharged backward through the soil covering chute 27, and the membrane body 18 is covered with soil 43, and the membrane body 18 is held down.

According to the above embodiment, the soil raked up by the tilling section 8 which rotates in the normal direction is moved along the surface 9a of the main cover 9 facing the tilling section 8 and the side surface of the guide member 45 as shown by the arrow in the figure. You will be guided to the wheel marks 48 in front of the tilling section 8. Therefore, the lack of cultivated soil at the wheel mark 48 portion is compensated for, and the ridge former 14 at the position corresponding to the wheel mark 48 is removed.
The height of the left and right ridges 15 formed by
5, and the ridges 15 can be covered tightly with the film body 18 without any gaps.

In addition, in the above embodiment, the present invention was applied to a rotary tiller that performs ridge forming work, but by applying it to a device that performs leveling work, it is possible to prevent dents from occurring due to lack of soil in the wheel marks after leveling. can be prevented.

Note that the number and shape of the guide members 45 are not limited to those described above, as long as they can guide the tilled soil to the wheel marks 45 in conjunction with the surface 9a of the cover 9 facing the tilling section 8.

(Effect of the invention) According to the rotary tilling device according to the present invention, the guide member that guides the soil raked up by the tilling section that rotates in the normal direction to the wheel tracks of the vehicle in front of the tilling section is located opposite to the tilling section of the cover. By being provided on the surface, it is possible to compensate for the lack of tilled soil at the wheel marks, and prevent the occurrence of dents during leveling work and problems due to uneven ridge height during ridge forming work.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a rotary tiller according to an embodiment of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a rear view thereof, Fig. 4 is a sectional view of the main cover, and Fig. 5 is a sectional view of the same main cover. FIG. 6 is a cross-sectional view of soil left after a conventional leveling work, and FIG. 7 is a cross-sectional view of the forming ridge. 5... Rotary tilling device, 8... Tilling section, 9...
...Main cover {9a...Opposing surface}, 45...Guiding member, 46...Vehicle, 48...Wheel marks.

Claims (1)

[Scope of utility model registration request] In the rotary tillage device 5 attached to the rear of the vehicle 46, which is equipped with a cover 9 that covers the tillage section 8 that can be tilled in the normal direction, the tillage section 8 removes the soil raked up by the tillage section 8 which rotates in the forward direction. Vehicle 46 in front
A rotary tilling device characterized in that a guide member 45 for guiding to wheel marks 48 of the cover 9 is provided on a surface 9a of the cover 9 facing the tilling section 8.