JPH0125546Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to Mohr.

As a conventional mower, for example, JP-A-55-
The one described in Publication No. 37191 is publicly known.

This conventional mower has a gear case on one side in the left and right direction of a machine frame mounted on a tractor, and a transmission case extending horizontally outward from the gear case. A reaping section that is rotationally driven around a vertical axis is provided, and a safety frame is placed above the reaping section.

The safety frame is for preventing bending or twisting deformation of the transmission case extending outward from the gear case, and one end of the safety frame supports the transmission case via a rotating reaping part. Therefore, the safety frame was unable to firmly support the transmission case.

Furthermore, since the safety frame supports the transmission case via the rotating portion of the reaping section, the safety frame must be removed each time the reaping section is assembled or disassembled, making maintenance cumbersome.

Therefore, the present invention was devised in view of the above-mentioned problems, and the feature of the present invention is that a gear case 19 is provided on one side in the left and right direction of the machine frame 12 mounted on the tractor 1. A transmission case 20 extends horizontally outward from the gear case 19, a reaping section 27 that is rotatably driven around a vertical axis is provided on the transmission case 20, and a safety frame 28 is installed above the reaping section 27. In the mower, the safety frame 28 includes a pair of left and right legs;
The safety frame 28 is formed into a gate-like shape in front view, and the horizontal part connects the upper ends of the legs.
7, one leg of the safety frame 28 is fixed to the gear case 19, and the other leg is fixed to the outer end of the transmission case 20, and these safety frames 28 The two legs of the cutting section 27 are located on the outside of the cutting section 27.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In FIG. 1, 1 is a tractor, and 2 is a mower conditioner, which is attached to the rear of the tractor 1 via a three-point link 3 so that it can be raised and lowered.

The mower conditioner 2 includes a mower 4, a conditioner 5, and a conditioner cover 6.

Reference numeral 7 denotes an arch-shaped machine frame, and forward-protruding brackets 8 are fixed to the lower left and right sides of the arch-shaped machine frame 7.
A bracket 9 is fixedly fixed to the upper center of the arch-shaped machine frame 7 so as to protrude forward, lower links 10 are removably supported on the left and right brackets 8, and top links 11 are removably supported on the central bracket 9. Supported by top link 11 (not shown)
It has a handle at its tail end, and the axial length of the top link 11, which is a screw structure, is extendable and retractable.

Reference numeral 12 denotes 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.

As shown in FIG. 2, one end of the movable machine frame 12 is pivoted to the lower left side of the arch-shaped machine frame 7 in this example through a cross joint connection body 14, and is extended laterally. has a connecting portion 15 that is U-shaped in plan.

16 is an elastic support body, one end of which is a cruciform joint connection body 1
It 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 7 via a screw adjuster (not shown), and the movable machine frame 12 and the like are elastically supported here via the elastic support 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).
A flat transmission case 20 is connected laterally outward from the lower end of the gear case 19 as shown in FIG.

A pulley 21 is fitted and fixed onto the transmission shaft 18, and a belt 22 is wound around the pulley 21 and the pulley 13, and a tension pulley 23 is connected to and supported by the belt 22, as shown in FIG. are doing. In addition, a chain, a sprocket, etc. may be used instead of a belt, a pulley, etc., and in short, a wound transmission body may be used.

A transmission body such as a gear is built in the flat transmission case 20, and a plurality of transmission bodies (for example, two or four
The rotary disks 24 are rotatable about the vertical axis. Note that the rotary disk 24 has a third
As shown in the figure, the cutting blade body 25 is pivoted, and a truncated cone-shaped grass collecting drum 26 is provided on the disk. Reaping sections 27 are configured to be driven in opposite directions so that the grass cut in groups gathers in the center.

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 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. They are interlocked and connected by a lifting drive body 32 shown in the figure.

That is, as shown in FIG.
is installed horizontally on the movable machine frame 12, and the rod end 3 of the piston is fitted into the tube 33.
4 and a plurality of mounting holes 35 formed in the plate 31.
are pivotally connected by a link 36, and in this example, the transmission shaft 1 is
The reaping section 27 of the mower 4 can be raised using 8 as a fulcrum, and the reaping section 27 of the mower 4 can be lowered using the transmission shaft 18 as a fulcrum by the extension operation of the elevating drive body 32.

It should be noted that a chain may be used in place of the link 36, and it is desirable that the link 36 has a threaded structure (turnbuckle) so that it can be expanded and contracted.

A pair of side frames 37 are fixed to 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, and each of the side frames 37 is attached to the reaping section 27 as shown in FIG. It extends to the rear in a downwardly sloping 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 shaft 43 is made up of a plurality of tines 46 that are removably pivoted through the notch 38, and are removably installed in the bearing mounting portion 39 through the notch 38. ), and a pin 41 is inserted into the insertion hole 42 to prevent it from coming out. 47 is a conditioner transmission body, which includes a pulley 48 coaxially attached to the pulley 21 on the transmission shaft 18, a bevel gear transmission case 49 detachably fixed to the outer surface of one side frame 37 via a bracket, and It mainly consists of a pulley 50 on the transmission case side, a belt 51 wound around the pulley 48 side, and the like.

That is, a shaft 52 on the input side of the Pepel gear mechanism in the transmission case 49 is provided in the front-rear direction, and the pulley 50 is fitted and fixed to the front end of the shaft 52.
is arranged vertically above the pulley 48, a coupling is fixed to the output shaft of the bevel gear mechanism, and one end shaft of the conditioner shaft 43 is connected to the coupling by a spline, key, etc.

Therefore, the conditioner 5 and the mower 4 are driven by power from the tractor PTO shaft.

The conditioner 5 can be attached and detached from the mower 4 by inserting and removing the retaining pin 41, loosening and tightening the bolts of the bracket, and removing the belt 51.

1 and 3, a conditioner cover 6 is removably provided on the safety frame 28 and side frame 37 via a plurality of bolts 53 to cover the conditioner 5. is made of sheet metal and consists of a pair of side covers 54 and a head cover 55.

In addition, in the figure, 56 is the inner shell of the mower, 57 is a pair of left and right safety covers, and the seat 5
8 is stretched, and can be raised and lowered about a pivot shaft 59 shown in FIG. 3 as a fulcrum so as to cover the upper part of each shoe of the inner and outer outerwear, and 60 is a stopper thereof. Also, 6
1 is a pair of left and right rear safety covers, and seat 6
The second class is stretched, and the pivot shaft 63 shown in FIG.
It can be raised and lowered freely using the fulcrum, and 64 is the stopper,
Reference numeral 65 denotes a receiver thereof, and the left side of the cover 61 covers the transmission body 47 from above. Also, the first
In the figure, 66 indicates a stand, which can be tilted and fixed.

Next, the action will be explained.

When attaching the conditioner 5 to the mower 4, a bearing case 49 provided at both ends of the conditioner shaft 43 is attached to each of the bearing mounting portions 39 formed at the rear extending ends of the pair of left and right side frames 37 of the mower 4. are fitted through the notches 38, and a retaining pin 41 is inserted into the insertion hole 42 to prevent the conditioner shaft 43 from coming off, and the conditioner shaft 43 is installed rotatably around the shaft.

Then, the mounting bracket is fixed to the side frame 37 with bolts, and the belt 51 is wound between the pulley 48 and the pulley 50.

To cut grass, etc., each rotary disk 24 rotates in the direction of the arrow in FIG. During the feeding process, a side frame 37 extending rearward from the cutting section 27 prevents the grass from scattering outward and assists in grass collection.

At the rear of the cutting section 27, the tines 46 of the conditioner 5 are rotating around their shafts 43, so the cut grass is raked up by the rotating tines 46 under the grass collecting action of the side frame 37. It is sent rearward along the conditioner cover 6.

Therefore, at this time, the grass stems and the like are bent or crushed and subjected to a predetermined preparation action.

When driving on the road, the mower 4 and conditioner 5, including the reaping section 27, are all raised around the transmission shaft 18 by retracting the lifting drive body 32, and the upright state is locked by a locking member (not shown). Yes, during this ascent (and descent is the same),
The transmission shaft 18 and the shaft 52 on the input side of the bevel gear mechanism are parallel to each other in the front-rear direction, and are interlocked with each other by the belt 51, so that lifting can be carried out lightly and easily.

When the conditioner 5 and the cover 6 are simply to be harvested without the need for conditioning, the conditioner 5 and the cover 6 can be removed.

In the mower conditioner that operates as described above, the safety frame 28 that attaches the conditioner 5 at the rear of the mower 4 is formed into a gate shape, and both ends of the safety frame 28 are fixed to the gear case 19 and the transmission case 20, so that the safety frame 28 is cantilevered. Since it has greater strength and rigidity than a structural frame, vibration of the conditioner 5 is prevented. Further, compared to the cantilever structure, reinforcing members for the safety frame 28 are not required, and therefore the welding process and the like are reduced, making it possible to manufacture the safety frame at low cost. Furthermore, since the safety frame 28 is made of pipe material, a divider 3 for weeding is attached to the tip of the safety frame 28.
0 can be easily attached.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may be, for example, a conditioner of a type that crushes grass with a pair of upper and lower rolls.

According to the present invention, one leg of the safety frame is fixed to the gear case and the other leg is fixed to the outer end of the transmission case, so that the safety frame supports the transmission case through the conventional rotating part. Compared to the above, the transmission case can be supported more reliably and firmly, and deformation of the transmission case can be prevented.

Furthermore, since the legs of the safety frame are located on both sides of the reaping section, maintenance of the reaping section is easy, and since the legs cover both sides of the reaping section, the safety frame fully functions as a safety frame.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a schematic plan view, FIG. 2 being a rear view, and FIG. 3 being an enlarged side view. 4...More, 5...Conditiona, 19...
... Gear case, 20 ... Transmission case, 27 ... Reaping section, 28 ... Safety frame.

Claims (1)

[Claims for Utility Model Registration] A gear case 19 is provided on one side in the left and right direction of the machine frame 12 mounted on the tractor 1, and a transmission case 20 is horizontally extended outward from the gear case 19. 20, a mower is provided with a reaping section 27 that is rotatably driven around a vertical axis, and a safety frame 28 is disposed above the reaping section 27. The safety frame 28 has a pair of left and right legs,
The safety frame 28 is formed into a gate-like shape in front view, and the horizontal part connects the upper ends of the legs.
7, one leg of the safety frame 28 is fixed to the gear case 19, and the other leg is fixed to the outer end of the transmission case 20, and these safety frames 28 The mower is characterized in that both legs of the mower are disposed on the outer side of the reaping section 27.