JPS635B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a mower conditioner towed by an agricultural tractor.

(b) Conventional technology In conventional mower conditioners, grass is cut by a reciprocating mower section, then raked by a large cylindrical raking body with pivoted comb teeth, and crushed by a crushing roller. Many things are known. For example, a ``grass cutting machine combined with an adjusting device'' (Japanese Patent Application Laid-Open No. 55-3794) is known. As shown in FIGS. 5 and 6, this mowing machine relates to a machine for adjusting and harvesting pasture grass, and particularly to a mowing machine combined with an adjusting device.

This mowing machine includes a cutting device 151 consisting of a disc 152 and a blade 153 fixed to the outside of the disc 152, and a body 166 attached to the top of the cutting device 151, which serves as a scraper. It consists of a plurality of arms 157 and rollers 176 and 178 located apart from the cutting device 151.
A guide plate 179 is formed between the cutting device 151 and the roller 178, which are located apart from each other.

(c) Problems to be Solved by the Invention These conventionally known mower conditioners require a scraper (copper 166, arm 167). However, since the scraping body occupies a large portion of the entire device, the device as a whole inevitably becomes large, which poses a problem that makes it difficult to introduce it to uneven slopes such as those in our country.

Furthermore, since the grass is raked up with the comb teeth (branch 167), the stems of the grass may become entangled with the comb teeth (branch 167), leaves may fall off due to the impact of the comb teeth, or leaves may fall between the comb teeth. It was impossible to hope for a high collection rate.

(d) Means for Solving the Problems This invention provides a plurality of disks each having a blow-up piece slopingly protruding from the upper surface and a cutter on the outer edge, which are arranged in parallel in a direction intersecting the traveling direction, The machine is equipped with crushing rollers that connect to each other, and the joint surface of the crushing rollers is set at a higher level than the cutting area of the disk, and the grass cut by the disk is pushed by a blow-up piece and discharged directly to the crushing roller. The problems of the prior art are solved by providing a mower compactioner that is characterized by being placed in close proximity to the disk so that it can be sent and crushed.

(E) Function When the disk is rotated, the grass that has just been cut by the cutter is pushed upward and released by the blow-up piece that projects obliquely from the upper surface of the disk, and is guided upward along with the rising air current. It is directly fed into the joint surface of the crushing roller.

(F) Embodiment The present invention will be described based on an embodiment of the drawings.
1 is a main frame that is approximately L-shaped in plan. Reference numeral 2 denotes a drive transmission provided on the lower left side of the main frame 1, which inputs power from the tractor via a universal joint 3 and a torque limiter 4 connected to a transmission shaft (not shown) of the tractor. 5,
Reference numeral 6 denotes left and right side plates, and the trapezoidal front end of the right side plate 6 protrudes beyond the flat front end of the left side plate 5. Reference numeral 7 denotes a disk drive gear case held on the left side plate 5, to which power is input from the drive transmission 2 via pulleys 8, 9 and a belt 10. 11 is a disk mower section provided between side plates 5 and 6;
A plurality of disks 13 are arranged in parallel on the upper surface of a horizontally installed support frame 12. The disk 13 has a truncated conical protrusion 14 in the center. Reference numeral 15 denotes an appropriate number of blow-up pieces installed on the upper surface of the disk 13 at an angle, and these blow-up pieces 15 are used to push and release the grass immediately after cutting upwards by the high-speed rotation of the disk 13, and also to create an upward air current. . 1
Reference numeral 6 designates an appropriate number of cutters provided on the outer edge of the disk 13. Reference numeral 17 denotes a rotation shaft built into the support frame 12, which rotates the disk 13. Disk 13 is the left half disk as shown in Figure 4.
The disks on _{the right} half rotate inward toward the center line , so that the grass flows continuously and the cut grass is always concentrated in the center of the disk mower section 11. Reference numerals 18 and 19 denote a pair of crushing rollers installed vertically between the side plates 5 and 6, each of which has a hard elastic body 21 fixed to the outer peripheral surface of a cylindrical body 20. A plurality of spiral protrusions 22 and spiral grooves 23 are formed on the surface of the elastic body 21 with different cycles. The concave groove portions 23 are arranged so as to face each other in the opposite direction. The crushing rollers 18 and 19 are connected to the protruding portion 22 and the groove portion 2.
3 mesh with each other and rotate in different directions. A joint surface 24 formed by the meshing of the crushing rollers 18 and 19 is provided at a higher level than the cutting portion of the disk 13, that is, the position of the cutter 16, and close to the disk 13. The crushing rollers 18 and 19 are driven by a gear case 25 connected to the drive transmission 2. 26 is a timing adjustment plate, which is the drive shaft 2 of the lower crushing roller 19.
It is located at the left end of 7. Both ends of the drive shaft 27 of the lower crushing roller 19 are rotatably supported by bearings 28 . Upper crushing roller 18
The drive shaft 29 has both ends connected to crushing rollers 18,
It is rotatably fitted approximately in the center of the link plates 30, 31 that adjust the pressure between the side plates 5, 6, and is configured to be able to freely move up and down in the elongated holes 32, 33 bored in the side plates 5, 6. ing. The link plates 30 and 31 are rotatably attached to the inner surfaces of the side plates 5 and 6 via pivots 32 provided at their front ends, and rotate about the pivots 32, with the amount of rotation being fixed to the rear ends. Adjustment is made using an adjustment screw 34 that is threaded through the support plate 33. A contact nut 35 is provided at the lower end of the adjustment screw 34, and the rubber part 3 fixed to the guide frame 36
7 and its upward movement is controlled by a tension spring 38.

Therefore, the degree of pressure between the crushing rollers 18 and 19 is determined by the amount of rotation of the link plates 30 and 31, that is, the amount of adjustment of the adjustment screw 34. The upper end of the tension spring 38 is connected to the rear part of the support plate 33, and the lower end is connected to a fixed shaft 39 that extends horizontally to the rear lower ends of the side plates 5, 6 and the guide frame 36. The guide frame 36 is provided behind the crushing rollers 18 and 19 to guide the adjusted harvested material rearward, and is formed in a tapered shape that opens downward. A circular pipe 40 is rotatably held within a bracket 41 fixed to the rear surface of the main frame 1 and having a U-shaped cross section, and is horizontally installed along the main frame 1. Support arms 42 and 43 have their bases fixed to the circular pipe 40.

44 and 45 are buffer springs whose upper ends are connected to the support arm 42,
43, and its lower end is pivoted to the receiver 48 of the holding shafts 46, 47 in a compressed state. The holding shafts 46 and 47 have their front ends rotatably pivoted to the rear lower ends of the side plates 5 and 6, and their rear ends connected to the wheels 49 and 5.
It is pivoted to the 0 axle. Hydraulic arms 51 and 52 have their lower ends pivoted on base shafts 53 provided on the outer surfaces of the side plates 5 and 6, and their upper ends pivoted on support arms 42 and 43. 54 is an elasticity adjusting device for the buffer spring 44 provided outside the left side plate 5, the base of which is pivoted on the base shaft 53, and the upper screw portion 55 is a stopper fixed to the inner surface of the support arm 42. 56. An adjustment nut 57 that comes into contact with a stopper 56 is screwed into the threaded rod portion 55 . When the screwing position of the adjustment nut 57 with respect to the threaded rod portion 55 is changed, the support arm 42 rotates around the circular pipe 40 due to the expansion and contraction of the buffer spring 44 until the stopper 56 comes into contact with the adjustment nut 57. Therefore, the upward rotation of the support arms 42, 43 is controlled by the adjusting nut 57.
and a stopper 56 in contact with the buffer springs 44, 45.
The buffering degree of is adjusted. Reference numeral 58 denotes a frame body rotatably supported horizontally on the inner upper part of the side plates 5 and 6, and is hung by a pin 59, and the crushing roller 18,
19 and a front sag 60 that covers the front upper part of the disc mower part 11. A reinforcing pipe 61 is constructed and fixed between the support arms 42 and 43. Reference numeral 62 denotes a traction rod connected to the main frame 1 via a locking mechanism 63, which is configured to be rotatable about a pivot shaft 64 by engaging the main frame 1 at its end, and to prevent the locking mechanism 63 from locking. The pin 65 is selectively engaged with a plurality of locking holes drilled in the locking plate 66 for connection. 67 is a gauge shoe pivotally connected to the frame 68 of the disk drive gear case 7.

Next, the operation of this embodiment will be explained. The mower conditioner of the present invention is connected to the rear part of an agricultural tractor and driven into a field. First, the grass is cut by the disk mower section 11, but at this time, an upward air current is generated by the blow-up piece 15 of the disk 13, so the grass is guided upright and is easily cut by the cutter 16. is rotated in the f ₁ direction or f ₂ direction, transferred to the center, rearward at the center disk 13,
Furthermore, it is pushed upward by the blow-up piece provided on the upper surface of the disk and is ejected, and is guided upward by the rising air current, and is directly crushed by the crushing rollers 18,
19 into the joint surface 24. Joint surface 2
4, the grass is bent and crushed in the longitudinal direction by the mutual engagement of the protruding portion 22 and the groove portion 23;
It is guided and released rearward by the guide frame 36.

With the configuration as described above, this embodiment achieved the following effects. First, the joint surface of the crushing roller is located at a higher level than the cutting area of the disk and close to the disk, eliminating the need for a large cylindrical scraping body as in the past, making the entire device compact and compact. Due to its reduced weight, it can now be installed on small plots of sloped land or in fields with severe unevenness.
Furthermore, since there is no need to rake the grass with the comb teeth provided on the raking body as in the past, there is no risk of grass getting entangled with the comb teeth or leaves falling off due to the combing of the comb teeth.
There is no need to worry about grass being lost due to leaves falling between the comb teeth, and a high collection rate can be expected. Second
In addition, grass cutting is performed with a disk mower instead of the conventional reciprocating mower, so even short or soft grass can be reliably cut, and the work can be carried out regardless of the type of grass. Thirdly, the rotation direction of a plurality of horizontally installed disks is the same for each half of the left and right halves, and is symmetrical with respect to the center line of the disk mower section, that is, it is configured to rotate inward toward the center line. Since the blades move inward and inward in the same direction to convey and cut the grass in a flowing manner, the grass within the cutting width can be reliably cut without leaving anything uncut. Therefore, the problem that occurs when adjacent disks used in conventional disk mower devices are rotated in different directions from each other is that a suction force is generated from the rear to the front in the vicinity of the adjacent disks, It is possible to prevent the harmful effects of grass in the area being brought forward and left uncut.

(G) Effects of the Invention Therefore, in the present invention, it is possible to omit the scraping body which occupies a large proportion of the device, and thus it is possible to downsize the device.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted side view showing an embodiment of the present invention, FIG. 2 is a partially cutaway side sectional view of FIG. 1, and FIG.
The figure is a partially omitted rear view of FIG. 1, FIG. 4 is a plan view showing the drive transmission state of FIG. 1, and FIGS. 5 and 6 are views of conventional examples. 13...Disk, 15...Blow up piece, 16
... Cutter, 18, 19 ... Crushing roller, 2
4...Joint surface.

Claims (1)

[Claims] 1. A plurality of disks each having a blow-up piece projecting obliquely from the upper surface and a cutter on the outer edge are arranged in parallel in a direction intersecting the direction of travel, and crushing rollers are connected to each other on the back surfaces of the disks. At the same time, the joint surface of the crushing roller is placed at a higher level than the cutting area of the disk, and the grass cut by the disk is pushed by the blow-up piece, discharged, and directly sent to the crushing roller to be crushed. A mower conditioner characterized by being placed in close proximity to. 2. The mower conditioner according to claim 1, wherein a plurality of disks arranged in parallel rotate toward the center in the width direction.