JPS64731Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a mower conditioner in which a disc mower mounted on a tractor is provided with a conditioner.

(Prior Art) As a conventional mower conditioner, a transmission case is horizontally extended from one side of the lower end of a gear case supported on a mower machine frame, and at least one pair of vertical shafts are rotatable in this transmission case. There is one in which a rotary disk and a rotary drum are provided on each vertical axis to form a reaping section, and a conditioner is disposed behind the reaping section.

In this conventional device, the width of the conditioner is limited to the central part of the cutting section where grass is collected, so the transmission case that drives the conditioner shaft is only one width.
It will be located inside the outer end of the pair of rotating disks, and if a power transmission means is provided to transmit power from the gear case to the transmission case for the conditioner shaft, the midway part will be located close to the rotating drum. .

(Problem to be solved by the invention) When the power transmission means is brought close to the rotary drum in this way, among the cut grass that is supplied to the conditioner by the rotary drum, the grass that does not enter the conditioner is connected to the rotary drum. This may cause it to get caught on the belt cover of the power transmission means and accumulate.

The grass clippings that did not enter the conditioner can be supplied to the conditioner again if they are connected to the rotating drum and come out in front of the cutting section, so there is no problem, but if the grass gets caught in the belt cover of the power transmission means and falls, Fallen grass not only cannot be conditioned, but also cannot be collected, and has a negative impact on post-treatment.

In view of the problems of the conventional device, the present invention has been developed by making the power transmission means and its cover into a bent shape so that the middle part thereof is separated from the rotating drum, thereby preventing the cut grass from getting caught. The purpose is to provide a mower conditioner.

(Means for Solving the Problems) A feature of the present invention for achieving this object is that the transmission case 20 is
protrudes to one side, and on this transmission case 20, at least one pair of rotary disks 24 having a cutting blade body 25 are disposed so as to be freely drivable about a vertical axis, and a grass collecting rotary drum 26 is mounted on the rotary disk 24. The reaping portion 27 is formed together with the rotary disk 24 by being integrally rotatably mounted, and the upper part of the gear case 19 and the transmission case 2 are connected to each other.
A frame 28 is installed between one side end of the rotary grass collecting drum 26, and a conditioner 5 is installed at the rear and upper part of the grass collection rotary drum 26.
and the conditioner shaft 43 having the tines 46 of the conditioner 5 is attached to the frame 28.
A transmission case 49 is installed on a pair of left and right side frames 37 fixed to the left and right side frames 37 so as to be rotatable about a horizontal axis, and is located at an end on the gear case 19 side of the conditioner 5 and is spaced upward from the gear case 19 on one side and transmits power to the conditioner shaft 43. and this transmission case 4
A power transmission means 47 and its cover 53 are provided between the gear case 19 and the power transmission means 47.
The cover 53 is inclined upwardly on one side from the gear case 19 to the middle part, and is substantially horizontal from the sloping upper part of the middle part to the transmission case 49, so that the cover 53 has a substantially dogleg shape when viewed from the rear.

(Function) The pair of rotary disks 24 rotates and the cutting blade body 25
When the grass is cut by the rotary drum 26, the grass is collected in the central grass collection section B by the rotary drum 26 and supplied to the conditioner 5. In the conditioner 5, tines 46 provided on a conditioner shaft 43 rotate to condition the grass.

Grass that is not properly introduced into the conditioner 5 due to the tine 46 passes through the vicinity of the power transmission means 47 and its cover 53, which connects with the rotating drum 26 and transmits power from the gear case 19 to the conditioner shaft 43. The power transmitting means 47 and its cover 53 have a substantially doglegged shape when viewed from the rear, and the midway portion thereof is spaced outward from the rotating drum 26, so that the grass does not get caught in them and returns to the cutting section 27. It is carried forward and resupplied to the conditioner 5.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

In the first embodiment shown in FIGS. 1 to 4,
1 is a tractor as a moving body, 2 is a mower conditioner, and a three-point link 3 is installed behind the tractor 1.
It is attached so that it can be raised and lowered freely through the The mower conditioner 2 includes a mower 4 and a conditioner 5.

7 is an arch-shaped machine frame, and this arch-shaped machine frame 7 is connected to a lower link 10 via fixed brackets 8 and 9.
and a top link 11 are each removably supported. Reference numeral 12 designates a movable machine frame, which has a power receiving device in the longitudinal middle portion of the frame that receives power from a tractor PTO shaft (not shown) via a universal joint shaft, and makes a pulley 13 of the device freely rotatable.

One end of the movable machine frame 12 is connected to a cross joint coupling body 14.
In this example, the arch-shaped machine frame 7 is pivotally supported at the lower left side via the arch-shaped machine frame 7 and extends in the lateral direction, and has a connecting portion 15 having a U-shape in plan at the extending end.

16 is an elastic support body, one end of which is a cruciform joint connection body 1
is pivoted to the left shoulder of the arched machine frame 7 via 7,
The other end is connected to the connecting portion 15 side of the movable machine frame 12 via a screw adjuster (not shown), and the movable machine frame 12 and the like are elastically supported here via the elastic support body 16.

A gear case 19 is connected to the connecting portion 15 of the movable machine frame 12 via a transmission shaft 18 in the front-rear direction (work progress direction).
is pivoted. Gear case 1 supported on the tractor 1 and to which power is transmitted from the tractor
A flat transmission case 20 is connected to the lower end of the transmission case 9 laterally outwardly.

A pulley 21 is fitted and fixed on the transmission shaft 18, and a belt 22 is connected between the pulley 21 and the pulley 13.
is wound around the belt 22, and a tension pulley 23 is connected to and supported by the belt 22.

A transmission body such as a gear is built in the flat transmission case 20, and a plurality of transmission bodies (for example, two, four
The rotary disks 24 are rotatable about the vertical axis. The rotary disk 24 has a cutting blade body 25.
is pivotally supported, and a truncated conical rotary grass collection drum 26 is provided on the disk, and each rotary disk 2
4 is made into a set of two, and the reaping parts 27 are configured to be driven in mutually opposite directions so that the grass cut by each set gathers in the central grass collecting part B.

28 is a safety frame made of pipe material, one end of which is fixed to the gear case 19 with a bolt or the like, and extends laterally upward and outward from the fixed part 29 so as to straddle the upper part of the reaping part 27; The tip part is bent downward, and the transmission case 2
0 is in contact with the upper surface of the tip and is bent further forward. The contact portion between the transmission case 20 and the safety frame 28 is fixed by welding, screwing, or the like. Safety frame 2 bent forward
A divider 30 for weeding is fixed to the tip of 8.

As shown in FIG. 2, a brace-shaped plate 31 is fixed between the base place of the fixed part 29 and the lower base of the safety frame 28, and the plate 31 and the movable machine frame 12 are connected to each other by a telescopic cylinder. The reaping part 27 of the mower 4 can be raised with the transmission shaft 18 as a fulcrum by the contraction movement of the lift drive body 32 shown in the figure, and the transmission shaft 18 can be raised by the extension movement of the lift drive body 32. The reaping part 27 of the mower 4 can be lowered using the fulcrum as a fulcrum.

On the left and right sides of the gate-shaped safety frame 28 that connects and fixes the gear case 19 and the tip of the transmission case 20,
A pair of side frames 37 are fixed to each other, and each of the side frames 37 extends behind the reaping portion 27 in a downwardly inclined shape.

A bearing mounting part 39 having a cutout part 38 is formed in the left and right corresponding parts of the extending end of each side frame 37 as a horizontal U-shape with a rear opening, and is fixed to the outer surface of the side frame 37. As shown in FIG. 3, the upper and lower portions of the notch 38 are expanded tapered portions 40, and an insertion hole 42 for a retaining pin 41 is formed in the upper and lower corresponding portions on the side of the notch 38.

The conditioner 5 has a conditioner shaft 43
and the bolt 4 is attached to the bracket 44 fixed on the shaft.
The conditioner cover 6 is composed of a plurality of tines 46 and a conditioner cover 6, which are removably pivotally connected to each other through the notch 38, and the conditioner cover 6. The conditioner shaft 43 is rotatably installed around the axis (horizontal axis) by this bearing 80, and the bearing 80 can be secured by inserting a pin 41 into the insertion hole 42. There is.

A bevel gear transmission case 49 is provided on one outer surface of the side frame 37 via a bracket, and this transmission case 49 has an input shaft 52 of a bevel gear mechanism therein in the front-rear direction, and an output shaft thereof is connected to the conditioner shaft 43. A power transmission means 47 is connected between the input shaft 52 and the transmission shaft 18.
is provided, and is configured to transmit power from the gear case 19 to the transmission case 49 to drive the conditioner shaft 43.

The conditioner 5 is disposed at the rear of the middle part in the width direction of the reaping part 27 and is narrower than the reaping part 27, and the gear case 19 is located below one side in the width direction of the reaping part 27. A transmission case 49 provided on one side of the gear case 5 in the width direction is spaced apart from the gear case 19 in the width direction and upward direction,
It is located above and behind the reaping section 27 and is close to the rotating drum 26 in rear view.

The power transmission means 47 includes a pulley 48 fixed to the transmission shaft 18, a pulley 50 fixed to the input shaft 52,
It has a belt 51 stretched between both pulleys 48 and 50, so that the power of the transmission shaft 18 can be transmitted to the transmission case 49, and is surrounded by a belt cover 53 fixed to the transmission case 49. ing.
In the conventional device, the belt 51 was simply hung between the pulleys 48 and 50, so the midway portion of the belt 51 (and the belt cover) was close to the rotating drum 26, as shown by the imaginary line in FIG. The belt cover was in a position where grass clippings were caught in the belt cover.

In the present invention, as shown in FIGS. 2 and 4, the belt cover 53 is formed into a bent shape,
In addition, the belt 51 is guided along the shape of the belt cover 53 by the two free-rotating pulleys 54 and 55 supported by the belt cover 53, and the center line connecting the power transmission means 47 and the middle part of the belt cover 53 to both ends thereof is formed. It is disposed outwardly and upwardly from A, and is spaced apart from the rotating drum 26. As a result, the belt cover 5
The grass clippings will no longer get caught in 3.

That is, the power transmission means 47 and the belt cover 53 are inclined upwardly on one side from the gear case 9 to the middle part, and are substantially horizontal from the inclined upper part of the middle part to the transmission case 49, so that they have a substantially dogleg shape when viewed from the rear. The belt 51 is connected to the pulleys 48 and 50.
It is formed so as to be separated from the grass clippings scattering zone together with the belt cover 53 without being stretched linearly therebetween.

Therefore, the rotary disk 24 rotates and the cutting blade body 2
When the grass is cut by the rotary drum 26, the grass is collected in a central grass collecting section B by the rotation of the rotary drum 26 and supplied to the conditioner 5, where it is conditioned. Grass that could not be properly introduced into the conditioner 5 due to hitting the tines 46 is transferred to the rotary drum 26 and the belt cover 53
It is transported again to the front of the reaping section 27 without being caught in the water, and is re-supplied to the conditioner 5.

In addition, the idle pulleys 54 and 55 are attached to the belt cover 53.
The belt cover 5 is freely rotatably supported on support shafts 56 and 57 attached to the belt cover 5 and extends through the support shaft 56.
The hole 58 of No. 3 is a long hole, and by adjusting the position, the tension of the belt 51 can be adjusted.

FIG. 5 shows a second embodiment of the present invention, in which pulleys 18, 50, belt 51 and idler pulley 5
4 and 55 and the shape of the belt cover 53 are the same as in the first embodiment, but the free rotating pulley 54 is a tension clutch.

The spindle 56 of the idling pulley 54 is attached to the belt cover 53
The lever 59 is attached to the other end of a lever 59 whose one end is pivotally supported, and the lever 59 is elastically pulled in the direction of applying tension to the belt 51 by a spring 60, and the inner wire of the Bowden wire 61 is connected. The rotation can be remotely controlled from the driver's seat of the tractor 1.

By operating the lever 59 to loosen the tension on the belt 51, cutting off power transmission through the power transmission means 47, and stopping the conditioner shaft 43, the mower conditioner 2 can perform only the mowing operation.

As shown in FIGS. 1, 3, and 6, the conditioner cover 6 includes a head cover 64 that covers the conditioner shaft 43 and the tines 46 above, a pair of left and right side covers 65, and a hinge 66 at the rear end of the head cover 64. It has a rear cover 67 which is rotatably supported around a horizontal axis through the rear cover 67.

The left and right side covers 65 are the left and right side frames 3
7, and its rear part protrudes rearward from the rear end of the side frame 37. At the rear of each side cover 65, a grass release guide plate 68 is provided in a rearwardly projecting manner.

The lower portions of the pair of guide plates 68 are curved inwardly, and the length of the curved portion 69 increases from the front to the rear. The front portion of each guide plate 68 is connected to a side cover 65 via a wing bolt 70, and the side cover 65 has an arcuate hole 71 for the wing bolt 70 centered around the hinge 66. Further, the upper part of each guide plate 68 is connected to the rear cover 67 via wing bolts 72 and 73, and the hole 7 of the rear cover 67 passes through the wing bolt 72 on the rear side.
As shown in FIG. 1, 4 is an arcuate hole centered on the front butterfly bolt 73.

The guide plate 68 is used to adjust the direction in which the grass is released from the conditioner 5 and to slow down the release speed so that it falls softly.

That is, by loosening the butterfly bolts 72, the left and right guide plates 68 can be adjusted in angle in the left and right directions, and by adjusting the angle in the same direction, grass can be left to the side from the center of mowing, and the next article When cutting the grass, it can be used to leave the grass under the belly of the tractor 1, and prevent the grass in a windrow from being trampled by the wheels of the tractor 1.

Furthermore, by arranging both guide plates 68 in an inverted V-shape as shown in Fig. 1, and by the action of the curved portion 69, the grass being released hits the guide plate 68 and its speed is reduced, making it fluffy. This allows for a windrow with good ventilation.

(Effect of the invention) In the invention described in detail above, the gear case 19 is located on one side of the reaping section 27 of the mower 4, and the gear case 19 is provided at the end of the gear case 19 of the conditioner 5 behind the reaping section 27. A power transmission means 47 for transmitting power from the gear case 19 to the conditioner shaft 43 of the conditioner 5 and its cover 53 are disposed between the transmission case 49 and the transmission case 49 located on the side of the reaping section 27 and away from the conditioner shaft 43 of the conditioner 5.
The power transmission means 47 and the cover 53 are inclined upwardly on one side from the gear case 19 to the middle part, and are substantially horizontal from the sloped upper part of the middle part to the transmission case 49, so that when viewed from the back, it is roughly shown. The conditioner 5
The grass that did not enter the cutting section 27 again without being caught by the power transmission means 47 and the cover 53.
It is resupplied to conditioner 5 through
Conditioning can be done on all grass clippings at all times.
Windrow formation is also good, and post-processing is not adversely affected.

[Brief explanation of the drawing]

Figures 1 to 4 show the first embodiment of the present invention, with Figure 1 being an overall plan view, Figure 2 being an overall rear view, Figure 3 being a side view, and Figure 4 showing main parts. FIG. 5 is an enlarged sectional view, FIG. 5 is a sectional rear view showing essential parts of a second embodiment of the present invention, and FIG. 6 is a perspective view of the rear part of the conditioner. 2...More conditioner, 4...More,
5... Conditioner, 19... Gear case, 2
0...Transmission case, 24...Rotating disk, 26
... Grass collection rotating drum, 27 ... Reaping section, 43 ...
Conditioner shaft, 47...Power transmission means, 49
...Transmission case, 53...Belt cover, A...
center line.

Claims (1)

[Scope of utility model registration request] A transmission case 20 is provided protruding to one side from the lower part of the gear case 19 supported by the moving vehicle body 1 and to which power is transmitted, and the transmission case 20 is provided with at least one pair of left and right rotary disks 24 provided with a cutting blade body 25 vertically. A rotary grass collection drum 26 is rotatably mounted on the rotary disk 24 to form a reaping section 27 together with the rotary disk 24, and the upper part of the gear case 19 and one side of the transmission case 20 A frame 28 is constructed between the ends of the rotary grass collecting drum 26, and a conditioner 5 is disposed above and behind the grass collection rotary drum 26. A transmission case 49 is mounted on the frame 37 so as to be rotatable around the horizontal axis, and is disposed at the end of the conditioner 5 on the side of the gear case 19, and is spaced upward from the gear case 19 on one side and transmits power to the conditioner shaft 43. A power transmission means 47 and its cover 53 are provided between the gear case 19 and the gear case 19, and the power transmission means 47 and the cover 53 are inclined upwardly on one side from the gear case 19 to the middle part, and the power transmission means 47 and the cover 53 are inclined upwardly on one side from the gear case 19 to the middle part, and the power transmission means 47 and the cover 53 are inclined upwardly on one side from the gear case 19 to the middle part, and transmission is made from the inclined upper part of the middle part. This mower conditioner is characterized in that the case 49 is approximately horizontal and has a dogleg shape when viewed from the back.